СПОСОБ АВТОМАТИЧЕСКОГО ОПРЕДЕЛЕНИЯ СОДЕРЖАНИЯ ЛИПКИХ ВКЛЮЧЕНИЙ В ПРОЦЕССЕ ВТОРИЧНОЙ ПЕРЕРАБОТКИ ВОЛОКОН

Описаны способ и система для непрерывного и автоматического определения уровней липкости в процессе получения вторичной волокнистой массы. Способ непрерывного и автоматического определения уровней липкости в процессе получения вторичной волокнистой массы с использованием спектроскопии в ближней инфракрасной области (БИК-спектроскопии) совместно с одной или более автоматическими листоформовочными машинами включает:- определение уровней липкости для серии образцов с использованием стандартной лабораторной аналитической процедуры, использование полученных результатов в качестве эталонных значений для создания одной или более калибровочных моделей на основе БИК-спектроскопии и сохранение набора(-ов) данных калибровочной(-ых) модели(-ей) в электронном запоминающем устройстве;- автоматический отбор образца в по меньшей мере одной точке отбора в технологической линии, транспортировку образца из технологической линии по пробоотборной линии в по меньшей мере одну автоматическую листоформовочную ...

УСТРОЙСТВО ДЛЯ ПЕРЕРАБОТКИ ИСПОЛЬЗОВАННОЙ БУМАГИ

Устройство предназначено для переработки использованной бумаги, размещено в небольшом магазине или обычном доме. В корпусе устройства мебельного размера оборудованы секция производства целлюлозы из использованной бумаги путем размачивания и размалывания использованной бумаги, секция производства бумаги для производства переработанной бумаги путем обработки целлюлозы из использованной бумаги, произведенной в секции производства целлюлозы, и блок управления для привода и управления взаимодействием секции производства целлюлозы и секции производства бумаги. Устройство размещается в помещении, в котором производится использованная бумага. Путем размачивания и обработки использованной бумаги в секции производства целлюлозы утечка или раскрытие конфиденциальной информации или личной информации, написанной или напечатанной на использованной бумаге, могут быть эффективно предотвращены, и дальше целлюлоза из использованной бумаги обрабатывается секцией производства бумаги, и производится переработанная ...

СПОСОБ АВТОМАТИЧЕСКОГО ОПРЕДЕЛЕНИЯ СОДЕРЖАНИЯ ЛИПКИХ ВКЛЮЧЕНИЙ В ПРОЦЕССЕ ВТОРИЧНОЙ ПЕРЕРАБОТКИ ВОЛОКОН

... 1. Способ непрерывного и автоматического определения уровней липкости в процессе получения вторичной волокнистой массы с использованием спектроскопии в ближней инфракрасной области (БИК-спектроскопии) совместно с одной или более автоматическими листоформовочными машинами, включающий:(а) определение уровней липкости для серии образцов с использованием стандартной лабораторной аналитической процедуры, использование полученных результатов в качестве эталонных значений для создания одной или более калибровочных моделей на основе БИК-спектроскопии и сохранение набора(-ов) данных калибровочной(-ых) модели(-ей) в электронном запоминающем устройстве;(б) автоматический отбор образца в по меньшей мере одной точке отбора в технологической линии, транспортировку образца из технологической линии по пробоотборной линии в по меньшей мере одну автоматическую листоформовочную машину, формирование листа из образца и сушку этого листа;(в) транспортировку высушенного листа, сформированного на стадии (б), в ...

СПОСОБ УПРАВЛЕНИЯ ПРОЦЕССОМ ОТБЕЛИВАНИЯ ДЛЯ ОБРАБОТКИ МАКУЛАТУРЫ И УСТРОЙСТВО ОТБЕЛИВАНИЯ ДЛЯ ОСУЩЕСТВЛЕНИЯ ТАКОГО СПОСОБА

... 1. Способ управления процессом отбеливания для обработки макулатуры со следующими операциями: подготовка волокнистой суспензии; измерение белизны волокнистой суспензии; смешивание волокнистой суспензии с отбеливающим средством; подача смешанной волокнистой суспензии в емкость для отбеливания (7); отбор смешанной волокнистой суспензии из емкости для отбеливания после определенного промежутка времени, причем отбеливающее средство содержит смесь из множества веществ, причем количество и/или состав добавленного отбеливающего средства устанавливают в зависимости от измеренной белизны волокнистой суспензии с помощью схемы соответствия так, что достигается возможно постоянная заданная белизна отобранной волокнистой суспензии, причем белизну отобранной волокнистой суспензии измеряют и сравнивают в режиме адаптации с заданной белизной и в зависимости от результата сравнения согласуют схему соответствия. 2. Способ по п.1, отличающийся тем, что отбеливающее средство содержит смесь из множества веществ ...

ИНТЕГРИРОВАННЫЕ СПОСОБ И СИСТЕМА ДЛЯ ПЕРЕРАБОТКИ ОТХОДОВ

ШНЕКОВЫЙ ПРЕСС С ПОДАЮЩЕЙ ТРУБОЙ, А ТАКЖЕ СПОСОБ РАБОТЫ ШНЕКОВОГО ПРЕССА

СПОСОБ УВЕЛИЧЕНИЯ ПРЕИМУЩЕСТВ УПРОЧНЯЮЩИХ СРЕДСТВ ПРИ ИЗГОТОВЛЕНИИ БУМАГИ И КАРТОНА

... 1. Способ изготовления бумаги, картона или тонкого картона, включающий следующие стадии:(а) превращение водного целлюлозного материала, содержащего крахмал, в бумажную массу,(б) предотвращение микробной деградации по крайней мере части крахмала при обработке водного целлюлозного материала, содержащего крахмал, одним или более биоцидов, которые добавляют по крайней мере частично в целлюлозный материал в зоне вязкой массы, где консистенция целлюлозного материала составляет по крайней мере 2,0%, и(з) добавление сухого и/или влажного упрочняющего полимера в целлюлозный материал.2. Способ по п. 1, где один или более биоцидов добавляют в непрерывном или периодическом режиме в целлюлозный материал в таком количестве, чтобы через 1 месяц обработки на целлюлозно-бумажном комбинате, эксплуатируемом в непрерывном режиме,- электропроводность водной фазы целлюлозного материала снижалась по крайней мере на 5% по сравнению с электропроводностью, которую в каждом случае измеряют непосредственно перед первым ...

Verfahren zur Aufbereitung von bei der Papierherstellung entstehendem Abwasser-Feststoffgemisch und Verwendung des Feststoffgemisches

Verfahren und Vorrichtung zur Behandlung einer Faserstoffsuspension

Verfahren und Vorrichtung zur Aufbereitung von Altpapier

Verfahren zur Aufbereitung von bedrucktem Altpapier

The invention concerns a method of processing printed waste-paper, in particular waste-paper containing at least 80 % newspaper or magazine paper, by dissolving the paper, various cleaning stages, flotation or washing and subsequently pulping to a degree of consistency of at least 20 % and, optionally, bleaching. The invention is characterized in that a second, terminal, pulping stage is carried out, optionally followed by bleaching stage. In the second pulping stage, the waste-paper is subjected to a vigorous kneading action by individually mounted rod-shaped or stud-shaped kneading elements on both the stator and rotor of the pulping machine. The stator and rotor are disposed in a pulping chamber delimited by the surfaces of two concentric cylinders. Pulping is carried out oven-dry at temperatures between 20 and 110 DEG C, preferably 38 to 65 DEG C, at a specific power consumption of between 30 and 100, preferably 80 kWh per ton of oven-dried paper.

Sauerstoffentklebung in einem Altpapierfaserrückgewinnungsverfahren.

VERFAHREN ZUR REINIGUNG VON PARTIKELN AUS EINEM ALTPAPIERRECYCLINGPROZESS

PROCESS FOR IMPROVING THE QUALITY OF PULP OBTAINED FROM WASTEPAPER

Verfahren zur Aufarbeitung von Wachspapier-(Paraffinpapier-) Abfaellen

VORRICHTUNG UND VERFAHREN ZUR HERSTELLUNG VON PAPIERPULPE, PAPPE, FASERBRETTERN UND ÄHNLICHEN ERZEUGNISSEN.

VERFAHREN ZUM DEINKEN

Aufbereiter mit einem Siebblech und Verwendungen eines derartigen Aufbereiters

Verfahren zur Behandlung der zum Verdünnen von Zellstoff bestimmten rückgewonnenen Abwässern.

Thermischer Transfer von Farbstoffmischungen, enthaltend Azamethinfarbstoffe

VERFAHREN UND VORRICHTUNG ZUR PROZESSFÜHRUNG BEI DER HERSTELLUNG VON PAPIER

VERFAHREN ZUR ENTFERNUNG VON BITUMEN AUS EINER BITUMENHALTIGEN WIEDERAUFGESCHLAEMMTEN ALTPAPIERMASSE

Verfahren zur Herstellung von einem absorbierenden Blatt aus einem recyklierten Papierherstellungsbrei

Verfahren zur Recyclierung von alten Behältern aus Wellpappe durch Flotation und enzymatische Hydrolyse

Zellstoffzufuhrvorrichtung für eine Vorrichtung zum Recycling von gebrauchtem Papier

Verfahren zur Verbesserung der Qualität einer Faser-Suspension

Die Erfindung betrifft ein Verfahren zur Verbesserung der Qualität der in einem Stoffaufbereitungsprozess erzeugten Stoffsuspension (39) für die spätere Herstellung von Flächengebilden aus Faserstoffen. Indem ein Verdünnungswasser (24) mit einem kalten Plasma oder einer Gasentladung behandelt wird, bevor das Verdünnungswasser (24) der Stoffsuspension (39) zugegeben wird, wird die Qualität der Stoffsuspension verbessert. Es wird beispielsweise eine bleichende Wirkung der Faserstoffe erzielt.

ENTFERNUNG ORGANISCHER ABLAGERUNGEN VON ALTPAPIERSTOFFEN AUS DER PAPIERHERSTELLUNG

Recycling lignocellulose based board material

Separation of solids from aqueous suspensions

PREPARING WASTE PAPER

A paper manufacturing process

COMPOSITION AND METHOD OF DEINKING OF RECYCLED CELLULOSIC MATERIAL

Paper Recycling System

A method for recycling paper comprises: (a) obtaining post-consumer waste paper; (b) tagging the waste paper such that a first entity is associated with the waste paper; (c) recycling the waste paper to produce recycled paper; (d) tagging the recycled paper such that a second entity is associated with the recycled paper; The recycled paper contains no waste paper that is not associated with the first entity. The first and second entities may be the same and may comprise labels. The post-consumer waste paper and the recycled paper may be stored separately from similar materials derived from different sources to avoid contamination. The paper recycling plant may be cleaned to remove any waste paper not associated with the first entity. The waste may be returned as recycled paper to the originator such as a government office.

A process for producing fibrous material from waste paper

A fibrous suspension prepared from waste paper by pulping (at 1), and cleansing by sorting in a screen sorter and/or cyclone (2), is temporarily heated before and/or during its passage through a disintegrating device (7) and prior to the separation of printing ink by flotation (8) or washing (and optically bleeching). The thickened suspension is maintained at temperatures above 85 DEG C during its passage through the disintegrating device (7). This allows types of waste paper, such as xerographic and offset-printed papers, which are difficult to de-ink to be cleaned, and therefore used for the production of fibrous material for paper manufacture. ...

Purifying water from waste paper treatment

Washing or waste water resulting from the treatment of waste paper is mixed with calcium soaps, and the calcium soap, which acts as a collector for hydrophobic substances contained in the waste water, is separated out together with the hydrophobic substances by sedimentation, flotation, centrifuging or filtering, and the cleansed water is returned to the treatment process.

REMOVAL OF BITUMEN FROM WASTE PAPER

PROCEDURE FOR CLEANING WITH OF THE WASTE PAPER PROCESSING RESULTING WASH OR WASTE WATER

PROCEDURE FOR THE REGULATION OF THE ACIDITY AND THE WATER HARDNESS WITH PAPER PRODUCTION

PROCEDURE AND PLANT FOR THE PRODUCTION OF IN PARTICULAR FIBROUS MATERIAL FROM WASTE PAPER, CLEANED BY PRINTING INKS

PROCEDURE AND ARRANGEMENT FOR THE STOFFAUFBEREITUNG WITH ASCHEHALTIGEM BASIC MATERIAL IN THE WASTE PAPER OR ZELLSTOFFAUFBEREITUNG

PROCEDURE FOR THE DEINKEN

VERFAHREN ZUR KONTINUIERLICHEN UMWANDLUNG VON FESTEM MUELL

PROCEDURE FOR THE HUMIDIFICATION OF SYNTHETIC MATERIAL

NEW PREPARATION AND PROCEDURE FOR THE TREATMENT OF SYNTHETIC MATERIAL

VORRICHTUNG UND VERFAHREN ZUR FLOTATION EINER FLÜSSIGKEIT

VERFAHREN ZUM DE-INKEN VON ALTPAPIER

VERFAHREN UND ANLAGE ZUR HERSTELLUNG VON INSBESONDERE VON DRUCKFARBEN GEREINIGTEM FASERSTOFF AUS ALTPAPIER

VERFAHREN ZUR AUFBEREITUNG VON ALTPAPIER UND WIRBELSTROEMUNGSVORRICHTUNG, ANGESCHLOSSEN AN EINEN STOFFLOESER ZUR DURCHFUEHRUNG DES VERFAHRENS

PROCEDURE FOR THE PRODUCTION OF NEARLY FIRST OFF FROM PAPIERABFAELLEN WITH HIGH DEGREE OF POLLUTION

PROCEDURE FOR THE WASTE PAPER TREATMENT

PROCEDURE AND PLANT FOR THE RECOVERY OF FIBROUS MATERIALS FROM WASTE PAPER

ALKALINE AMYLASE OUT BACILLUS

Verfahren zur Aufbereitung von Verpackungsmaterial

Den Gegenstand dieser Erfindung bildet ein Verfahren zur Aufbereitung von metallisierten Verpackungsmaterialien, insbesondere von Getränkekartons. Erfindungsgemäß werden dabei zuerst die Faserstoffe von den Kunststoff- und Aluminiumresten entfernt bzw. getrennt. Danach wird in einem weiteren Schritt das Aluminium mit Hilfe von Säure aufgelöst und vom Kunststoff getrennt. Die metallhaltige Lösung der Säure wird dann einer pyrohydrolytischen Behandlung unterzogen und so die Säure rückgewonnen. Das Aluminium kann als wertvolles Aluminiumoxid rückgewonnen werden.

Pulperanordnung und Verfahren zum Auflösen von Fasermaterial

... #CMT# #/CMT# The pulper (1) has a rotatable drum (2) comprising a dissolving portion (7) to dissolve a fiber material that is contained in a fiber mass suspension and supplied into the pulper. A washing part (8) recovers fibers from the fiber material dissolved in the dissolving portion. The drum comprises a thicken-part (6) for increasing material density of the fiber mass suspension. The thicken-part in the drum is arranged on a side of an upper flow in flow direction of the fiber mass suspension with respect to the dissolving portion. The thicken-part is provided with gap-like apertures (10). #CMT# : #/CMT# An independent claim is also included for a method for dissolving a fiber material. #CMT#USE : #/CMT# Drum pulper for treatment of a fiber material e.g. secondary fiber material such as waste cardboard or mixed waste paper, for manufacturing paper and cardboard. Uses include but are not limited to office paper, corrugated cardboard, newspaper, magazine, mixed waste and liquid package ...

SORTIERER UND VERFAHREN ZUR SICHTUNG VON FASERMASSE

The sorter (1) has an acceptance block (11) removing a fiber mass fraction from the sorter, where the fiber mass fraction reaches a screen drum (3) via a sorting surface (10). A rejection block (12) removes fiber mass fraction, which does not reach the screen drum via the sorting surface, from the sorter. A static supply opening (15) supplies rinsing medium e.g. water, from an acceptance chamber (9) or from a direction of the chamber against the screen drum or in a direction of the screen drum for cleaning the sorting surface. An independent claim is also included for a method for classification of fiber masses.

VERFAHREN UND VORRICHTUNG ZUR PROZESSTEMPERATURKONTROLLE BEI STOFFAUFBEREITUNGSKREISLÄUFEN MIT HILFE VON WÄRMEPUMPEN

Den Gegenstand dieser Erfindung bildet ein Verfahren zur Prozesstemperaturkontrolle in Faserstoffaufbereitungsprozessen, insbesondere in Prozessen zur Altpapieraufbereitung, wobei Faserstoffe (15) zur Bildung einer Faserstoffsuspension in einem Stoffauflöser (6) aufgelöst und einem nachfolgenden Sortiersystem (5) zugeführt werden. Erfindungsgemäß wird dem nach der Stoffauflösung zugeführten Verdünnungswasser (1) über eine Wärmepumpe (7) Wärme entzogen. Den Gegenstand dieser Erfindung bildet auch eine Vorrichtung, mit der das erfindungsgemäße Verfahren durchgeführt werden kann.

ZUFUHR EINES FASERSUSPENSIONSSTROMS IN EINE FLOTATIONSZELLE UND INJEKTOR FUR EINE FLOTATIONSZELLE

The method involves supplying fiber suspension stream to an injector (2) and dividing the fiber suspension stream into sub flows/partial flows, where the flows suck air which is to be mixed with the fiber suspension stream in the injector and the air is mixed to the fiber suspension stream. Different amounts of air in the flows are sucked such that an atmospheric load of mixture of air and fiber mass is different at different points of a diffuser (5) of the injector, where the mixture leaks out/exhausts from the diffuser of the injector. An independent claim is also included for an injector comprising tubing sections.

ANLAGE UND VERFAHREN ZUM ABSCHEIDEN VON GAS AUS FLOTATIONSSCHAUM

The gas separation plant (1) has a gas separation area (4) provided with a section, where a cross-section surface of gas separation area is arranged for supplying the flow. A fluid supplying block (9) is provided for supplying fluid in the gas separation area. An independent claim is also included for a method for separating gas of flotation foam.

Verfahren zur Aufbereitung von Verpackungsmaterial

Den Gegenstand dieser Erfindung bildet ein Verfahren zur Aufbereitung von metallisierten Verpackungsmaterialien, insbesondere von Getränkekartons. Erfindungsgemäß werden dabei zuerst die Faserstoffe von den Kunststoff- und Aluminiumresten entfernt bzw. getrennt. Danach wird in einem weiteren Schritt das Aluminium mit Hilfe von Säure aufgelöst und vom Kunststoff getrennt. Die metallhaltige Lösung der Säure wird dann einer pyrohydrolytischen Behandlung unterzogen und so die Säure rückgewonnen. Das Aluminium kann als wertvolles Aluminiumoxid rückgewonnen werden.

PROCEDURE AND ARRANGEMENT FOR THE STOFFAUFBEREITUNG WITH ASCHEHALTIGEM BASIC MATERIAL IN THE WASTE PAPER OR ZELLSTOFFAUFBEREITUNG

PROCESSING OF PAPER AND PASTEBOARD

INTEGRATED WASTE PAPER EXPLANATION PROCEDURE FOR THE PRODUCTION OF FIBERS FOR TISSUE PAPER

PROCEDURE FOR THE REPROCESSING OF WASTE PAPER.

PROCEDURE FOR DECOLORIZING IN THE MASS COLORED PAPERS AND SELF BY POSTING PAPERS.

DEVICE TO THE DEINKEN.

VERFAHREN ZUR ALTPAPIERAUFBEREITUNG

VERFAHREN UND ANLAGE ZUR RUECKGEWINNUNG EINER FASERSTOFFSUSPENSION AUS GEMISCHTEM ALTPAPIER

PROCEDURE FOR THE PROCESSING OF WASTE WATER SOLID MIXTURE AND USE OF THE SOLID MIXTURE DEVELOPING DURING THE PAPER TRADE.

TURMFOERMIGER CONTAINER FOR THE PROCESSING OF WASTE PAPER

PROCEDURE FOR THE REGULATION OF THE ACIDITY AND THE WATER HARDNESS WITH PAPER PRODUCTION

PROCEDURE FOR THE PRODUCTION OF LED BACK MATERIALS FOR HYGENIC END USES

PROCEDURE FOR BLEACHING PAPIERZELLSTOFF

PROCEDURE AND DEVICE FOR THE RECUPERATION OF FIBERS FROM WASTE WATER

PROCEDURE FOR THE PROCESSING OF WASTE PAPER UNDER AVOIDANCE OF BIOCIDES AND CHLORINE COMPOUNDS, AS WELL AS OF HYDROGEN PEROXIDE AND PERESSIGSÄURE, MECHANISM FOR THE EXECUTION OF THIS PROCEDURE AS WELL AS RECYCLING OF TISSUE PAPERS WITH A GESAMTKEIMZAHL OF SMALL 1000 KBE/G AND A OBERFLÄCHENKEIMZAHL OF SMALL 20 KBE/DM2

ENTKLEBUNG MEANS OXYGEN IN A WASTE PAPER FIBER RECOVERY PROCEDURE

PRODUCTION OF GENTLE PAPER PRODUCTS OF OLD NEWSPRINT

PROCEDURE FOR THE DEINKEN

PROCEDURE AND APPARATUS FOR THE PRODUCTION OF ABSORBING GRANULAR MATERIAL

PROCEDURE AND DEVICE FOR THE WETTING OF SYNTHETIC MATERIAL

Procedure and device for the dispersion of impurities during the paper processing

PROCEDURE FOR THE INCREASE OF THE HOMOGENEITY AND THE INSTRUCTION DEGREE OF PULP

TREATING MUNICIPAL SOLID WASTE

TREATMENT OF ABSORBENT SANITARY PAPER PRODUCTS

PROCESS FOR IMPROVING THE QUALITY OF PULP OBTAINED FROM WASTEPAPER

Multi-layer cardboard material and method for producing a multi-layer cardboard material

The invention relates to a multi-layer cardboard material (10), comprising at least one first fibrous-material layer (12), which has a cellulose-containing base material, and at least one second fibrous-material layer (14) comprising a mixture of cellulose-containing material and fine material particles, wherein a material of origin for the fine material particles is coco peat and the fine material particles have a particle size < 0.5 mm, in particular < 0.3 mm. The invention further relates to a method for producing a multi-layer cardboard material (10), in particular a multi-layer cardboard web, comprising at least one first and one second fibrous-material layer (12, 14), and the use of a fibrous-material layer comprising a mixture of cellulose-containing material and fine material particles.

Waste processing

The present invention relates generally to the field of waste processing. The method comprises separating waste into at least two parts, comprising: (i) mainly food waste (fines) and (ii) mainly paper and other recyclable material (overs). The overs are pulped and washed to obtain a cellulose-rich biomass and the fines are optionally processed separately to recover a cellulose-rich biomass and the cellulose-rich biomass from both the fines and the overs may be combined.

Wood-free pulp and white paper product

PROCESS FOR IMPROVING THE QUALITY OF PULP OBTAINED FROM WASTEPAPER

Production of soft paper products from coarse cellulosic fibers

Method of optimizing the metering of charge-reversal agent into paper broke

Floor absorbent granular product

Wood-free pulp and white paper product

Novel strength resins for paper and repulpable wet and dry strength paper made therewith

A PROCESS FOR BLEACHING PAPER STOCK

METHOD FOR RECOVERING PULP FROM PRESSURE-SENSITIVE CARBONLESS COPYING PAPER WASTE

A PROCESS FOR THE TREATMENT OF FIBRE MATERIAL AND NEW COMPOSITION

The invention relates to a process for the treatment of a fibre material comprising the step of contacting the fibre material in an aqueous medium with a chelating agent and a polymer having general formula (I) wherein R1 is a hydrogen atom or an alkyl group containing 1 to 12 carbon atoms; R2 is -COOM or -CH2COOM; M is a hydrogen atom, an alkali metal ion, an alkaline earth metal ion, an ammonium ion or a mixture thereof; n, m and k are molar ratios of corresponding monomers, wherein n is 0 to 0.95, m is 0.05 to 0.9, and k is 0 to 0.8, and (n+m+k) equals 1, and the weight average molecular weight is between 500 and 20,000,000 g/mol. The invention also relates to a composition comprising a chelating agent and the above polymer.

METHODS FOR PRODUCING RECYCLED PULP, METHODS FOR MODIFYING PULP FIBRE SURFACES AND DIRTS, AS WELL AS PULP PROCESSING EQUIPMENTS

The present invention aims to produce high-quality recycled pulp with little damage to fibers, high brightness and low residual ink by means of a force selectively acting on fiber surfaces during the process of recycling waste paper. Moreover, fiber surfaces are modified by means of a force acting on only the fiber surfaces to obtain high-quality pulp and to render harmless dirts deteriorating pulp quality. A method for producing recycled pulp characterized in that cavitation is generated and used to strip contaminants deposited on fibers and ash during the process of recycling waste paper. Contaminants such as ink deposited on fibers and ash are stripped/fragmented by means of the impact force induced by collapse of fine bubbles by actively introducing bubbles generated by cavitation into a pulp suspension. A jet system having one or more nozzles for jetting an aqueous slurry containing a material comprising cellulose into a vessel.

METHOD AND APPARATUS FOR MEASURING DEPOSITION OF PARTICULATE CONTAMINANTS IN PULP AND PAPER SLURRIES

A method and an apparatus for measuring the depositability of particulate contaminants present in a pulp or paper mill fluid stream and evaluating interactions of such particulate contaminants with other contaminants collects the particulate contaminants on a suitable substrate, such as a plastic film coated with an adhesive or coated with. organic contaminate, placed in contact with the pulp or paper mill fluid stream for at least five minutes up to several hours. The amount of contaminants collected on the substrate is quantified and evaluated by taking one or more scanned images of the substrate with a resolution of at least 2,000 dots per inch (DPI) and analyzing the scanned images with image analysis technique.

POLYESTER SURFACTANTS FOR DEINKING

The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinldng. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentration values.

PROCESS FOR RECYCLING WASTE PAPER, PRODUCT OBTAINED THEREFROM AND ITS USES

The present invention relates to a bioprocess for recycling waste paper originated from high quality paper comprising the following steps: a) preparation of pulp; b) dilution with water of the pulped material obtained in a) c) enzymatic treatment of pulp; d) addition of inorganic salts and glues; e) dilution with water of the material obtained in d) f) filtration by vacuum; optional press; and g) drying In particular, said high quality paper is printed paper. The present invention also relates to the obtainable product by the above mentioned process. The present invention further relates to the different uses of the product such as building and construction material, eco-packaging material and eco-decorative material. 1. A process for recycling waste paper originated from high quality paper comprising the steps of:a) preparation of the pulp, wherein waste papers are fed in a pulper with water having a consistency between 15 and 20%;b) dilution with recycled water of the pulped material obtained in a) until a consistency between 5 and 10%;c) enzymatic treatment of the diluted pulped material obtained in b);d) addition of one or more inorganic salts and one or more glues to the material obtained in treatment c);e) dilution with water of the material obtained in d) until a consistency between 1 and 3%;f) filtration of the material obtained in e) by vacuum and optional press;g) drying the filtered material obtained in f); andwherein there is a feedback of residual water suspension after the filtration in step f) into containers where steps b) and e) take place.2. The process according to claim 1 , wherein the step a) is carried out by additionally adding hydrolases.3. The process according to claim 1 , wherein the temperature for step a) is from 25 to 40° C. and pH between 5 and 9.4. The process according to claim 1 , wherein the pH of step c) is between 6 and 9.5. The process according to claim 1 , wherein the enzymatic in step c) is carried out by oxidorreductases and ...

Deinking compositions and methods of use

Provided are surfactant compositions and their use for deinking various substrates, such as waste paper. The compositions comprise: (a) an alkyldiphenyloxide disulfonate compound of formula (I): wherein R 1 at each occurrence is independently C 6 -C 18 alkyl, M + is H + or a monovalent cation, p and q are independently 0 or 1 provided that at least one of p and q is 1; and (b) a nonionic surfactant of formula (II): wherein X and Y are independently ethylene oxide or propylene oxide, m and n are independently integers ranging from 0 to 50, provided that at least one of m and n is not 0, z is an integer ranging from 1 to 50, and R is R A or R A —C(═O)— wherein R A is C 4 -C 22 alkyl or C 4 -C 22 alkenyl.

POLYESTER SURFACTANTS FOR DEINKING

The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentration values. 1. A method of deinking printed waste paper that comprises ink and paper pulp , comprising:a) converting the printed waste paper to an aqueous pulp slurry in a repulper;b) contacting the aqueous pulp slurry with the addition of a composition comprising a polyester surfactant, the polyester surfactant comprising a condensation esterification product of a) a polyhydric alcohol selected from glycerol, arabitol, sorbitol, sorbitan, mannitol, mannitan, erythritol, pentaerythritol, and mixtures thereof, b) a dimer or trimer of an C2 to C42 acid, and c) polyethylene glycol and polypropylene glycol;c) separating the ink in the aqueous pulp slurry; andd) recovering deinked paper pulp from the aqueous pulp slurry.2. (canceled)3. (canceled)4. The method of claim 1 , wherein the composition comprising the polyester surfactant is provided in an amount of from about 0.1 pound per ton to about 30 pounds per ton based on the weight of the printed waste paper.5. The method of claim 1 , wherein the aqueous pulp slurry has a pH ranging from about 6 to about 12.6. The method of claim 1 , wherein the composition comprising the polyester surfactant is a blend of the polyester surfactant with C6 to C22 fatty acids.7. The method of claim 1 , wherein the composition comprising the polyester surfactant is a blend of the polyester surfactant with a polyol selected from ethylene glycol claim 1 , propylene glycol claim 1 , trimethylene glycol claim 1 , 1 claim 1 ,4-butanediol claim 1 , 1 claim 1 ,5-pentanediol claim 1 , 1 claim 1 ,6-hexanediol claim 1 , 1 claim 1 ,7-heptanediol claim 1 , 1 claim 1 ,8-octanediol claim 1 , 1 claim 1 ,9-nonanediol claim 1 , 1 claim 1 ,10-decanediol ...

PROCESSES FOR PREPARING PULP AND PAPER

The purpose of the present invention is to provide technology for regenerating pulp having high quality with compact pulp regenerating equipment and less energy. 1. A process for preparing recycled pulp , comprising fractionating a pulp slurry having a solids content of 1.5% by weight or more containing waste paper pulp into a long fiber fraction and a short fiber fraction using an outward flow slit screen having openings with a slit width of 0.1 mm to 0.3 mm , wherein the solids content ratio of the long fiber fraction to the short fiber fraction is 10:90 to 60:40 and wherein the difference in Canadian standard freeness between the long fiber fraction and the short fiber fraction is 100 ml to 300 ml.2. The process of wherein the recycled pulp is obtained by subjecting the long fiber fraction to an ink detachment step and a contaminant removal step.3. The process of or wherein the long fiber fraction has a solids content of 2.0% by weight or more immediately after fractionation claim 1 , and wherein the fraction is dehydrated to a solids content of 25% by weight or more and then subjected to the ink detachment step and the contaminant removal step at a solids content of 0.5 to 1.2% by weight using a screen having a slit width of 0.1 to 0.2 mm.4. The process of wherein the long fiber fraction is not subjected to an ink removal step by flotation.5. The process of wherein the recycled pulp is obtained by subjecting the short fiber fraction to an ink removal step.6. The process of wherein the short fiber fraction is subjected to an ink detachment step at a solids content of 5% or less and then subjected to the ink removal step.7. The process of wherein the ink detachment step comprises bringing cavitation bubbles into contact with the pulp.8. The process of wherein the short fiber fraction is not subjected to a contaminant removal step using a screen.9. A process for preparing paper comprising incorporating a long fiber pulp and/or a short fiber pulp obtained by the ...

PAPER RECYCLING SYSTEM AND PAPER RECYCLING METHOD

To provide a paper recycling device capable of recycling paper of increased whiteness level that can be widely used for applications other than paper for newspapers, the paper recycling device of the present invention has a dry type defibrator for crushing and defibrating paper, a first transport pipe for transporting defibrated material that was defibrated by the dry type defibrator, a cyclone for air classifying and deinking the defibrated material transported by the first transport pipe, a second transport pipe for transporting the defibrated material that was deinked by the cyclone, and a paper forming machine for forming paper with the defibrated material transported by the second transport pipe. 1. A paper recycling device comprising:a dry type defibrator being configured to defibrate first paper into defibrated material,a first transport unit being configured to convey the defibrated material after being defibrated by the dry type defibrator,a classifier unit being configured to deink by an air flow classification of the defibrated material after being transported by the first transport unit,a second transport unit being configured to transport the defibrated material after being deinked by the classifier unit, anda paper forming unit being configured to form second paper with the defibrated material after being transported by the second transport unit.2. The paper recycling device according to claim 1 , whereina flow velocity of air flow at a first connecting part of the classifier unit and the first transport unit is larger than a flow velocity of air flow at a second connecting part of the dry type defibrator unit and the first transport unit.3. The paper recycling device according to claim 1 , whereinthe classifier unit is a cyclone.4. The paper recycling device according to claim 1 , whereinthe paper forming unit includes a dispersion member being configured to disperse in air the defibrated material after being transported by the second transport unit, ...

CELLULOSIC BARRIER PACKAGING MATERIAL

A barrier packaging material containing a composite which comprises i) a cellulosic layer; ii) at least one metal layer which will dissolve under alkaline conditions; and iii) at least one polymer layer, in which the polymer is hydrolysable under alkaline conditions. The invention also relates to articles comprising the barrier packaging material. Further, the invention concerns the use of a polymer, which is hydrolysable under alkaline conditions, as a protective layer in barrier packaging products. In addition the present application is also concerned with a method for recycling the aforementioned barrier packaging products. Specifically the barrier packaging products are initially taken in an aqueous wastepaper suspension which is either pulped in an alkaline medium and/or treated in an alkaline medium in a deinking process and in which the metal and polymer are then separated from the cellulosic fibres contained in the cellulosic layer. 1. A material comprising a composite which comprises:a cellulosic layer;a metal layer which will dissolve under alkaline conditions; anda polymer layer, in which the polymer hydrolyses under alkaline conditions.2. The material according to claim 1 , wherein the metal layer is aluminium.3. The material according to claim 1 , wherein the polymer is an aliphatic-aromatic polyester which comprises:i) from 40 to 70 mol %, based on the components i to ii, of a dicarboxylic acid derivative or dicarboxylic acid selected from the group consisting of succinic acid, adipic acid, sebacic acid, azelaic acid and brassylic acid;ii) from 60 to 30 mol %, based on the components i to ii, of a terephthalic acid derivative;iii) from 98 to 102 mol %, based on the components i to ii of a C2-C8 alkylenediol or C2-C6-oxyalkylenediol;iv) from 0.00 to 2% by weight, based on a total weight of the components i to iii, of at least one chain extender, crosslinking agent, or both, selected from the group consisting of a di- or polyfunctional isocyanate, ...

Fixation Of Mineral Oil In Paper Food Packaging With Laccase To Prevent Mineral Oil Migration Into Food

A method is provided for preventing, minimizing, and/or eliminating the migration of mineral oils from paper food packaging into packaged food. The method can include adding a copper-containing oxidase enzyme, such as a laccase enzyme, to a paper pulp from which the paper food packaging is to be formed. The migration of mineral oils originating from residual inks in recycled old corrugated containers and old newsprint, is particularly suppressed, including the migration of C 10 -C 25 fractions of aromatic mineral oil hydrocarbons and of saturated mineral oil hydrocarbons.

METHOD AND SYSTEM FOR RECYCLING PAPERS

A method for recycling paper to produce a less white and clean office paper product for paper printing and writing, said method comprising the steps of: collecting waste papers; sorting said collected papers waste without the need to separate between the various paper grades; pressing said sorted recycled paper; pulping said sorted recycled paper by a pulper which contains water turns into a mixture; said pulper chops said sorted recycled paper into small pieces; heating said pulp mixture breaks said recycled paper down more quickly into tiny strands of cellulose or fibers to eventually, said sorted recycled paper turns into a pulp; sieving, said pulp is forced through sieves containing holes and slots of various shapes and sizes, said sieves remove small contaminants; cleaning, said pulp spinning around in large cone-shaped cylinders; heavy contaminants are thrown to the outside of the cone and fall through the bottom of the cylinder; lighter contaminants collect in the center of the cone and are removed; refining, said pulp is beaten to make said recycled fibers swell for papermaking; if said pulp contains any large bundles of fibers, said refining step separates said bundles into individual fibers; dewatering, said watery pulp enters a headbox at a paper machine, and then is sprayed in a continuous wide jet onto a huge flat wire sieve which is moving very quickly through said paper machine; on a sieve, water starts to drain from said pulp, and said recycled fibers quickly begin to bond together to form a watery sheet; said sheet moves rapidly through a series of felt-covered press rollers which squeeze out more water; said sheet, which now resembles paper, passes through a series of heated metal rollers which dry said paper’, said dried paper is wound into a giant roll and removed from the paper machine; the roll of said paper is cut into smaller rolls, or sometimes into sheets and made into said paper product. 1. A method for recycling paper to produce a less ...

Industrial Deinking of Ink Compositions

The ink composition comprises pigment particles and a stimulus responsive dispersing agent for dispersing said pigment particles in a protic polar solvent, for instance for inkjet printing, which stimulus responsive dispersing agent comprises an anchoring part for anchoring to said pigment particles, a stimulus responsive part as shown in formula (XXa) or (XXb) and a hydrophilic part for solvent stabilization of the pigment, wherein the stimulus responsive part upon exposure to a stimulus initiates decomposition of the stimulus responsive dispersing agent. The paper with the printed ink can be deinked in an industrial deinking process. 1. An inkjet printer system for printing with an ink composition with a pigment particle and a stimulus responsive dispersing agent for dispersing said pigment particle , which stimulus responsive dispersing agent comprises a stimulus responsive part , a hydrophilic part and an anchoring part for anchoring to a pigment particle;said inkjet printer comprising the ink composition, a printer nozzle and an irradiation source for irradiating the ink composition;wherein the irradiation source is configured to initiate the decomposition of the stimulus responsive dispersing agent into a first agent comprising the anchoring part and into a second agent comprising the hydrophilic part due to exposure of the stimulus responsive part thereof.2. The inkjet printer system of claim 1 , wherein the stimulus responsive part is provided with a photolabile group which is a combination of a benzoyl-group and a polar group in the α-position to the carbonyl of the benzoyl-group.3. The inkjet printer system of claim 1 , wherein the irradiation source is integrated into the printer nozzle claim 1 , and wherein the irradiation source is configured to irradiate the ink composition when entering or leaving the printer nozzle.4. The inkjet printer system of claim 1 , wherein the irradiation source is integrated into a tube or ejecting pipe from the printer ...

SUPPORTED TOOTHED PLATES IN A DISPERSER

A plate segment includes: a substrate having a front side and a back side, wherein the back side is configured to be mounted to a support disc of a disperser; and rows of teeth protruding from the front side of the substrate. The rows of teeth are arranged along an arc extending from a first lateral side of the plate segment to an opposite lateral side of the plate segment. A first tooth in the rows of teeth has a first tooth face. A buttress extends from the first tooth face to a face of an adjacent tooth. The buttress has a concave profile at a height above the substrate less than a full height of the teeth. 1. A plate segment comprising:a substrate having a front side and a back side, wherein the back side is configured to be mounted to a support disc of a disperser; androws of teeth protruding from the front side of the substrate, wherein the rows of teeth are arranged along an arc extending from a first lateral side of the plate segment to an opposite lateral side of the plate segment,wherein a first tooth in the rows of teeth has a first tooth face, and wherein a buttress extends from the first tooth face to a face of an adjacent tooth, andwherein the buttress has a concave profile at a height above the substrate that is less than a full height of each tooth.2. The plate segment of claim 1 , wherein the buttress further comprises an abutting area claim 1 , wherein the first tooth face further comprises a total area claim 1 , wherein the abutting area of the buttress is less than the total area of the first tooth face claim 1 , andwherein the face of the adjacent tooth comprises a total area, wherein the abutting area of the buttress is less than the total area of the face of the adjacent tooth.3. The plate segment of claim 2 , wherein a difference between the abutting area and the total area defines an exposed area.4. The plate segment of claim 3 , wherein the exposed area is in a range of 20% to 80% of the total area of the first tooth face.5. The plate ...

SUPPORTED TOOTHED PLATES IN A DISPERSER

A plate segment includes a substrate having a front side and a back side, wherein the back side is configured to be mounted to a support disc of a disperser; rows of teeth protruding from the front side of the substrate, wherein each of the rows are arranged along an arc extending from one side of the plate segment to an opposite side of the plate segment. In at least one of the rows of teeth, adjacent teeth are joined by a bridge spanning a gap between the adjacent teeth. The bridge is elevated above the front side of the substrate such that the bridge is separated from the front side by an open space in the gap. 1. A plate segment comprising:a substrate having a front side and a back side, wherein the back side is configured to be mounted to a support disc of a disperser; androws of teeth protruding from the front side of the substrate, wherein each of the rows of teeth are arranged along an arc extending from one side of the plate segment to an opposite side of the plate segment,wherein in at least one of the rows of teeth, adjacent teeth are joined by a bridge spanning a gap between the adjacent teeth, wherein the bridge is elevated above the front side of the substrate such that the bridge is separated from the front side by an open space in the gap.2. The plate segment of claim 1 , wherein the bridge is at or near an end of the adjacent teeth away from the front side of the substrate.3. The plate segment of claim 1 , wherein the bridge joins a sidewall of each of the adjacent teeth.4. The plate segment of claim 1 , wherein the bridge joins sidewalls of the adjacent teeth at an elevation of the adjacent teeth above the front side in a range of one-third to an entirety of a height of the adjacent teeth above the front side.5. The plate segment of claim 1 , wherein the bridge has a shape selected from the group consisting of: a circular or oval shape in cross section at a midpoint of the bridge between the adjacent teeth claim 1 , a rectangular shape in cross- ...

Disperser plates with intermeshing teeth and outer refining section

A disperser apparatus includes: a first disperser assembly configured to rotate around an axis; and a second disperser assembly facing the first disperser assembly. The first and second disperser assemblies each have a plurality of disperser-refiner plate segments annularly arranged. Each of the disperser-refiner plate segments includes a substrate having teeth extending from the substrate and arranged in rows disposed at radial intervals defining a dispersion section. Each tooth has a tooth height; and walls; and edges at junctions of adjacent walls. Each of the disperser-refiner plate segments further includes a refining section of refiner bars extending from the substrate, wherein adjacent refiner bars and the substrate define a groove between the adjacent refiner bars; and a plurality transition bars disposed between radially outermost teeth and the refining section.

High Consistency Re-Pulping Method, Apparatus and Absorbent Products Incorporating Recycled Fiber

A method of pulping wastepaper includes providing a pulping vessel with a rotor and at least one flow sensor adapted to measure slurry flow within the pulping vessel. The pulping vessel is charged with wastepaper and water to form a slurry, the amounts of wastepaper and water being present such that the slurry has consistency in the range of from 10% to 30%. The wastepaper charge in the pulping vessel is pulped at a pre-selected power level while monitoring poloidal slurry flow in the pulping vessel; and from time-to-time, water may be added to the pulping vessel when the poloidal flow falls below a predetermined lower threshold flow value in order to reduce viscosity and thereby restore poloidal flow within the pulping vessel. Doppler velocimetry is a preferred method of monitoring pulp flow. In a particularly preferred construction the rotor has a variable power drive. The inventive method is especially useful for making high quality, high brightness furnishes from wastepaper which varies from batch to batch. 1. A high consistency pulping apparatus comprising:(a) a pulping tub for receiving a wastepaper slurry;(b) a rotor disposed in the pulping tub, coupled to a power drive; and(c) at least one flow sensor attached to the pulping tub adapted to measure slurry flow within the pulping vessel.2. The apparatus according to claim 1 , wherein the flow sensor is an ultrasonic Doppler flow sensor.3. The apparatus according to claim 2 , wherein the flow sensor is a directional Doppler effect ultrasonic flow sensor.4. The apparatus according to claim 2 , wherein the pulping tub is provided with a plurality of ultrasonic Doppler flow sensors.5. The apparatus according to claim 1 , wherein the power drive is a variable power drive.6. The apparatus according to claim 5 , wherein the variable power drive is a variable frequency power drive comprising an AC drive and an AC motor.7. A high consistency pulping apparatus comprising:(a) a pulping tub with a bottom and a sidewall ...

METHODS OF OPTICAL BRIGHTENING AGENT REMOVAL

In some embodiments, a method relates to removal of optical brightening agents (OBA) from a substrate using peracetate oxidant solutions. A method may include reducing the microbial load in white water of water recycle loops. The methods may include providing a peracetate oxidant solution. The peracetate solution may include peracetate anions and a peracid. In some embodiments, the peracetate solution may include a pH from about pH 10 to about pH 12. In some embodiments, the peracetate solution has a molar ratio of peracetate anions to peracid ranging from about 60:1 to about 6000:1. In some embodiments, the peracetate solution has a molar ratio of peracetate to hydrogen peroxide of greater than about 16:1. The peracetate solution may provide bleaching, sanitizing and/or disinfection of water, pulp, substrates and/or surfaces. The peracetate oxidant solution may provide enhanced separation of dyeing agents from a substrate. 1. A method of degrading dyeing agents from a substrate , comprising:contacting a substrate with a peracetate oxidant solution;mixing the substrate with the peracetate oxidant solution; andoxidizing said dyeing agents using the peracetate oxidant solution.2. The method of claim 1 , further comprising heating the substrate to a temperature from between about 50° C. to about 95° C.3. The method of claim 1 , further comprising acidifying the substrate before contacting with the peracetate oxidant solution.4. The method of claim 3 , wherein the acidifying of the substrate comprises the addition of acid.5. The method of claim 3 , wherein the acidifying of the substrate results in a pH of less than 5.5.6. The method of claim 1 , wherein oxidizing said dyeing agents comprises at least partially quenching a fluorescence of the dyeing agents.7. The method of claim 1 , wherein as a duration of time of contact of the substrate with the peracetate oxidant solution increases the amount of degradation of dyeing agents increases.8. The method of claim 1 , ...

A method for treating starch in pulp, paper and board making processes

The invention relates to a method for treating starch in pulp, paper and board making processes, in which processes recycled fibre material is used as raw material wherein the recycled fibre material is pulped in a pulper and obtaining a pulp flow comprising an aqueous phase and at least recycled fibres and starch dispersed in the aqueous phase. The method comprising the following steps: —adding amylase enzyme inhibitor and/or at least one biocide to pulp flow or to an aqueous process flow comprising starch for preventing starch degradation, and—adding an amphoteric polymer obtained by copolymerisation of (meth)acrylamide with cationic and anionic monomers to pulp flow or to an aqueous process flow comprising starch for binding starch to the fibres. 1. A method for treating starch in pulp , paper and board making processes , in which processes recycled fibre material is used as raw material wherein the recycled fibre material , such as paper , board and/or broke , is pulped in a pulper and obtaining a pulp flow comprising an aqueous phase and at least recycled fibres and starch dispersed in the aqueous phase , adding amylase enzyme inhibitor and/or at least one biocide to pulp flow or to an aqueous process flow comprising starch for preventing starch degradation, and', 'adding an amphoteric polymer obtained by copolymerisation of (meth)acrylamide with cationic and anionic monomers, which amphoteric polyacrylamide has the mass average molecular weight over 1 500 000 g/mol, to pulp flow or to an aqueous process flow comprising starch for binding starch to the fibres., 'wherein the method comprising the following steps2. The method according to claim 1 , wherein the starch is a low molecular weight starch comprising an acid or enzyme modified surface size starch.3. The method according to claim 1 , wherein the mass average molecular weight of the amphoteric polyacrylamide is in the range of 1 500 000-6 000 000 g/mol claim 1 , preferably 2 500 000-4 500 000 g/mol claim ...

METHODS FOR DEINKING UV PRINTS

The present invention aims to develop a technique for efficiently preparing deinked pulp from prints made with UV-curable inks. According to the processes for preparing deinked pulp of the present invention, high quality deinked pulp can be obtained by performing the steps of: disintegrating printed waste paper containing UV prints in water to give a waste paper slurry; and applying a mechanical process to the waste paper slurry using a rotary disintegrator. 1. A process for preparing a deinked pulp , comprising the steps of:disintegrating printed waste paper containing UV prints in water to give a waste paper slurry; andapplying a mechanical process to the waste paper slurry using a rotary disintegrator.2. The process of claim 1 , comprising removing inks to the outside by flotation before the step of applying a mechanical process.3. A process for making paper claim 1 , comprising converting a raw material containing the deinked pulp prepared by the process of into paper.4. A process for making paper claim 2 , comprising converting a raw material containing the deinked pulp prepared by the process of into paper. The present invention relates to a technique for deinking printed materials to prepare deinked pulp. In particular, the present invention relates to a technique for deinking waste paper stocks containing prints made by UV printing (UV prints) to prepare deinked pulp. According to the present invention, high quality deinked pulp can be prepared efficiently from UV prints that are hard to deink.Recently, the use of waste paper has been expanding in view of resource conservation or environmental issues. On the other hand, the quality and variety of prints have increased so that hard-to-recycle printed waste papers such as prints made by UV printing and prints coated with resin films are frequently mixed in printed materials collected as waste paper.If these prints are used as raw materials to prepare deinked pulp (DIP), some problems may occur such as impaired ...

SHREDDER AND SHEET MANUFACTURING APPARATUS

Provided are a shredder assuring greater freedom in designing a feedstock supplier that supplies sheets, and a sheet manufacturing apparatus. The shredder has a feedstock supplier having a supply opening through which a sheet is supplied; and a shredding device configured to shred the sheet supplied from the feedstock supplier. The shredding device includes a rotary cutter that rotates on a first axis, and a circulating cutter that moves in an endless path and cuts the sheet in conjunction with the rotary cutter. The circulating cutter includes a conveyor configured to convey the sheet from the feedstock supplier to the rotary cutter. 1. A shredder comprising:a feedstock supplier having a supply opening through which a sheet is supplied; anda shredding device configured to shred the sheet supplied from the feedstock supplier; 'the circulating cutter including a conveyor configured to convey the sheet from the feedstock supplier to the rotary cutter.', 'a circulating cutter that moves in an endless path and cuts the sheet in conjunction with the rotary cutter,'}, 'the shredding device including a rotary cutter that rotates on a first axis, and'}2. The shredder described in claim 1 , wherein:the circulating cutter includes a chain of multiple rotatably connected teeth each having a blade to cut the sheet in conjunction with the rotary cutter.3. The shredder described in claim 2 , wherein:the chain includes the conveyor configured by a part of the chain that conveys the sheet to the rotary cutter.4. The shredder described in claim 2 , wherein:the conveyor links the teeth in a line.5. The shredder described in claim 2 , wherein:the chain is disposed with the teeth winding circumferentially along the rotary cutter.6. The shredder described in claim 2 , wherein:the chain is endless.7. The shredder described in claim 1 , wherein:the supply opening is disposed facing the conveyor.8. The shredder described in claim 1 , wherein:the supply opening is disposed facing the rotary ...

Screw press with a delivery pipe and method for operating a screw press

A screw press features a feed pipe, in which a rotatable feed screw is arranged, and a feed cone, to which the feed screw conveys material, wherein drainage openings are arranged in the feed pipe. Drainage openings are preferably also provided in the feed pipe cone. Especially the combination of a feed screw with a feed pipe cone and a downstream compactor leads to a simple and effective compression of particularly liquid materials.

Methods To Control Organic Contaminants In Fibers Using Zeolites

Methods to control organic contaminants in fibers are described. One method involves contacting the fibers with a) at least one zeolite and optionally b) detackifier, or an ester hydrolyzing enzyme, or both, for a sufficient time and in a sufficient amount to control the organic contaminants present in the fibers. This method is effective to reduce stickies in paper mill furnish formed with recycled fibers. A method for pitch control in paper mill furnish formed with virgin fibers is also provided. Resulting paper products formed from the processed fibers are also described as well as methods to make them. 1. A method for controlling deposition of organic contaminants from fibers in paper making systems , comprising contacting said fibers with a) at least one zeolite and optionally b) at least one detackifier , or at least one ester hydrolyzing enzyme or both , for a sufficient time and in a sufficient amount to control the organic contaminants present in the fibers.2. The method of claim 1 , wherein b) is present and is said at least one ester hydrolyzing enzyme.3. The method of claim 1 , wherein b) is present and is at least one detackifier.4. The method of claim 1 , wherein b) is present and is at least one ester hydrolyzing enzyme and at least one detackifier.5. The method of claim 3 , wherein said at least one zeolite and detackifier are present together as a liquid suspension and added to a pulp slurry containing said fibers.6. The method of claim 4 , wherein said at least one zeolite claim 4 , detackifier claim 4 , and ester hydrolyzing enzyme are present together in a liquid suspension and added to a pulp slurry containing said fibers.7. The method of claim 2 , wherein said at least one zeolite and ester hydrolyzing enzyme are present together in a liquid suspension and added to a pulp slurry containing said fibers.8. The method of claim 1 , wherein said at least one zeolite and optionally b) are added to a pulp slurry containing said fibers prior to a ...

Method for producing softwood-derived pulp fibers for paper and softwood-derived pulp fibers for paper

A method of producing conifer-derived pulp fibers for paper includes a beating step of beating conifer-derived material pulp fibers in the presence of a liquid including water; and an ozone treatment step of treating, with ozone water, the beaten conifer-derived material pulp fibers.

METHOD FOR DEWATERING OF SLUDGE FROM A PULP, PAPER OR BOARD MAKING PROCESS

A method is disclosed for dewatering of sludge from a pulp, paper or board making process, such as deinking sludge, including obtaining of an aqueous sludge including an aqueous phase and a fibre material suspended in the aqueous phase. The sludge is subjected to a pre-thickening step, where a first part of the aqueous phase is removed from the sludge and to a pressing step, where a second part of the aqueous phase is removed from the sludge, thereby obtaining a dry pressed sludge. Before or at the pre-thickening step a polymer composition having a charge density of at the most 1.7 meq/g, preferably at most 1.5 meq/g, more preferably at most 1.1 meq/g, is added to the sludge. 1. A method for dewatering of sludge from a pulp , paper or board making process , such as deinking sludge , the method comprising:obtaining an aqueous sludge comprising an aqueous phase and a fibre material suspended in the aqueous phase,subjecting the sludge to a pre-thickening step, wherein a first part of the aqueous phase is removed from the sludge,subjecting the sludge to a pressing step, wherein a second part of the aqueous phase is removed from the sludge and obtaining a dry pressed sludge, andadding to the aqueous sludge before or at the pre-thickening step a polymer composition having a charge density of at the most 1.7 meq/g, preferably at the most 1.5 meq/g, more preferably at the most 1.1 meq/g, and comprising:a cationic synthetic first polymer, which has a charge density at least 1.0 meq/g at pH 2.8, anda cationic second polymer, which is a copolymer obtained by polymerisation of (meth)acrylamide and at least one cationic second monomer, the amount of cationic monomers being 2-19 weight-%, calculated from the total amount of the monomers, the second polymer being polymerised in presence of the cationic first polymer,wherein the first polymer has a higher charge density than the second polymer.2. The method according to claim 1 , wherein the cationic first polymer has charge ...

WASTE RECYCLE COMPOSITION

A recycled cellulose pulp composition is provided which comprises recycled cellulosic fibers and cellulose ester staple fibers. The recycled cellulose pulp containing co-refined re-cycled cellulose fibers and cellulose ester staple fibers can be added to a hydropulper and fed back through a refiner to make wet laid products. 1. A composition comprising , or obtained by combining:a. waste/recycle cellulose fibers, and i. a denier per filament (DPF) of less than 3, or', 'ii. a cut length of less than 6 mm, or', 'iii. crimping, or', 'iv. non-round with a DPF of less than 3, or', 'v. a combination of any two or more of (i)-(iv), and, 'b. cellulose ester (CE) staple fibers havingc. water.2. The composition of claim 1 , wherein the composition has a consistency of at least 0.2 wt. %.3. The composition of claim 1 , wherein the CE staple fibers are added dry claim 1 , or are obtained from solvent spun filaments claim 1 , or both claim 1 , and no plasticizer is added to the composition and the CE staple fibers and the filaments from which they are cut are not surface hydrolyzed.4. The composition of claim 1 , wherein the CE staple fibers have a cut length claim 1 , and the ratio of cut length to DPF is not more than 5:1 claim 1 , or not more than 3:1 claim 1 , or nor more than 2.5:1.5. The composition of claim 1 , wherein the composition has a Canadian Standard Freeness of less than 400.6. The composition of any claim 1 , wherein the CE staple fibers are crimped and have a ratio of crimps per inch: DPF within a range of 5:1 to 14:1.7. The composition of claim 1 , wherein a portion of the CE staple fibers are obtained from broke compositions.8. A process for making a waste/recycle composition comprising:a. combining waste/recycle cellulose fibers, cellulose ester (CE) staple fibers, and water in a hydropulping vessel, andb. agitating the cellulose fibers, CE staple fibers, and water to obtain a furnish composition having a consistency of less than 50 wt. %; i. a denier per ...

METHOD FOR AUTOMATICALLY DETERMINING STICKIES IN A RECYCLED FIBRE PROCESS

The invention relates to a method and a system for continuously and automatically determining sticky levels in a process for producing recycled fibre pulp utilizing near-infrared (NIR) spectroscopy in combination with one or more automated sheet former (s). 1. A method of continuously and automatically determining sticky levels in a process for producing recycled fibre pulp utilizing near-infrared (NIR) spectroscopy in combination with one or more automated sheet former(s) , which comprises the steps:(a) determining sticky levels for a series of samples using a standard laboratory analytical procedure, utilizing the results as reference values to establish one or more calibration model(s) from NIR spectroscopy, and storing the dataset(s) of the calibration model(s) on an electronic storage device;(b) automatically withdrawing a sample from at least one sampling point in the process line, transporting the sample through a sample line from the process line to at least one automated sheet former, forming a sheet from said sample, and drying said sheet;(c) transporting the dried sheet from step (b) to a measuring zone and recording a spectrum from the sheet in the near infrared region to obtain spectral data;(d) processing the spectral data obtained in step (c) on a computer utilizing at least one stored calibration model, and receiving for each calibration model as output a value of the sticky level in the process for producing recycled fibre pulp.2. The method according to claim 1 , characterized in that the method further comprises the step of measuring the weight of the sheet after recordation of the NIR spectrum.3. The method according to claim 1 , characterized in that the calibration model is established by calibrating reference spectral data claim 1 , obtained by spectrometric measurements in the near infrared region on reference samples claim 1 , to known sticky values of said reference samples by means of multivariate data analysis.4. The method according to ...

Methods of Making Paper and Paper with Modified Cellulose Pulps

The present invention relates to an improved process for producing chemical cellulose pulp wherein biopolymers are added immediately before, during or after a bleaching step, depending on pulp characteristics and on process conditions used. The biopolymers according to the present invention are starches chemically modified by an etherification reaction. This treatment results in a differentiated pulp having improved physical, chemical and mechanical properties when compared with cellulose pulps obtained by traditional processes. The use of said biopolymer alters the relations between important pulp properties rendering their application in papermaking process advantageous. This differentiation increases the possibilities of use and also of new applications, including for the substitution of pulps produced from other cellulose sources. Thus, the present invention also relates to methods of making paper, such as printing, writing, decorative, special or tissue-type papers, through the use of the cellulose pulps modified by the above process.

Method for Processing Packaging Material

The subject of the present invention is a method for processing metallized packaging materials, especially beverage cartons, or blister packaging. 117.-. (canceled)18. A method for processing packaging materials containing plastics , aluminum and other metals , comprising:separating other metals that are soluble in hydrochloric acid from the packaging material, leaving a mix containing plastics and aluminum solids;subjecting the mix to acid that dissolves the aluminum, thereby forming a solution of aluminum in the acid, with dispersed plastic solids;separating the plastic solids from the solution of aluminum in acid;pyrohydrolytically treating the solution of aluminum in acid to form an aluminum oxide fraction and a gaseous acid fraction; andrecovering the acid in the gaseous acid fraction by absorption or condensation.19. The method according to claim 18 , wherein the packaging material includes pulp and the pulp is detached from the packaging material to form a pulp suspension and the pulp suspension is separated from the plastics and aluminum before the aluminum is dissolved in acid.20. The method according to claim 18 , wherein the acid used to dissolve the aluminum is hydrochloric acid.21. The method according to claim 18 , wherein the pyrohydrolytic treatment is conducted in a spray roasting reactor.22. The method according to claim 18 , wherein the aluminum oxide formed undergoes thermal post-treatment.23. The method according to claim 22 , wherein the thermal post-treatment takes place at a temperature between 800° C. and 2400° C.24. The method according to claim 22 , wherein the thermal post-treatment is conducted in a lime kiln or a plasma reactor.25. The method according to claim 18 , wherein the aluminum oxide is ground.26. The method according to claim 18 , wherein the aluminum oxide is subjected to fractionation according to particle size.27. The method according to claim 18 , wherein the acid recovered in the pyrohydrolytic treatment is used again to ...

METHOD FOR PRODUCING PAPER, AND PITCH REMOVAL AGENT

Provided is a method for producing paper and a pitch removal agent that can remove pitch efficiently. 1. A method for producing paper using waste paper , comprising adding , to the pulp slurry in the step of deinking the waste paper by floatation and/or a step earlier , [{'br': None, '[Numerical Formula 1]'}, {'br': None, 'i': y=−', 'x+b, '0.0297\u2003\u2003(A)'}, '(wherein, 70≦x≦88 and 2.80≦b≦3.03)., 'a polyvinyl alcohol having an average polymerization degree of 300 to 2500, a saponification index of 70 to 88 mol %, and an absorbance at a wavelength of 280 nm in the ultraviolet absorption spectrum of its 0.1 mass % aqueous solution of 0.1 Abs or more and satisfying, when the iodine absorbance at a wavelength of 490 nm is designated as y (Abs) and the saponification index as x (mol %), the following Numerical Formula (A)2. A pitch removal agent added to a pulp slurry during production of paper using waste paper in the step of deinking the waste paper by floatation and/or a step earlier , [{'br': None, '[Numerical Formula 2]'}, {'br': None, 'i': y=−', 'x+b, '0.0297\u2003\u2003(4)'}, '(wherein, 70≦x≦88 and 2.80≦b≦3.03)., 'the pitch removal agent containing a polyvinyl alcohol having an average polymerization degree of 300 to 2500, a saponification index of 70 to 88 mol %, and an absorbance at a wavelength of 280 nm in the ultraviolet absorption spectrum of its 0.1 mass % aqueous solution of 0.1 Abs or more and satisfying, when the iodine absorbance at a wavelength of 490 nm is designated as y (Abs) and the saponification index as x (mol %), the following Numerical Formula (A) The present invention relates to a method for producing paper using waste paper and a pitch removal agent used in the method for producing paper. More specifically, it relates to a technology for removing pitch from a pulp slurry.Under recent increase of waste paper recovery rate, low-quality waste paper is also recycled as raw materials for paper making. For that reason, the amount of pitch ...

METHOD FOR RECYCLING BALED WASTE MATERIAL

A method to facilitate recycling waste material, including waste paper and organic material, comprises the steps of receiving a plurality of plastic-wrapped compressed bales of the waste material at a waste material recycling location from a remote baling location, thereafter introducing the plurality of plastic-wrapped compressed bales into a re-pulping device at the waste material recycling location to form a treated waste material including substantially re-pulped waste paper, and thereafter discharging the treated waste material from the re-pulping device. 1. A method to facilitate recycling of waste material including waste paper and organic material , comprising the steps of:receiving a plurality of plastic-wrapped compressed bales of the waste material at a waste material recycling location from a remote baling location;thereafter introducing the plurality of plastic-wrapped compressed bales into a re-pulping device at the waste material recycling location;re-pulping the waste paper in a re-pulping device to form a treated waste material including substantially re-pulped waste paper; andthereafter discharging the treated waste material from the re-pulping device.2. The method of wherein the re-pulping device is an autoclave and the re-pulping is carried out at an elevated processing temperature and an elevated processing pressure.3. The method of further comprising the steps of baling the waste material into a plurality of plastic-wrapped compressed bales at the remote baling location and transporting the plastic-wrapped compressed bales from the remote baling location to the waste material recycling location.4. The method of wherein the plurality of plastic-wrapped compressed bales include one or more odor reducing or modifying chemicals added to the waste material.5. The method of wherein the treated waste material includes odorous compounds.6. The method of wherein the waste material comprises organic material that includes odorous compounds or claim 1 , ...

SHEET MANUFACTURING APPARATUS

A sheet manufacturing apparatus can determine if the sheets supplied as feedstock have already been recycled. 1. A sheet manufacturing apparatus comprising:a supply unit configured to supply feedstock;a defibrating unit configured to defibrate the feedstock;a depositing unit configured to deposit defibrated material defibrated by the defibrating unit;a forming unit configured to form a sheet from a web laid by the depositing unit;a marking unit configured to apply a mark to at least one of the web and the sheet; anda reading unit configured to read the mark imparted to the feedstock when a sheet having mark imparted thereto is supplied as the feedstock.2. The sheet manufacturing apparatus described in claim 1 , the marking unit being disposed to at least one of the depositing unit and the forming unit.3. The sheet manufacturing apparatus described in claim 1 ,the mark being embossment with a protrusion or indent in the surface of the sheet; andthe reading unit reading the embossment.4. The sheet manufacturing apparatus described in claim 1 ,the mark being a part with different density than other parts of the sheet; andthe reading unit reading the part with different density.5. The sheet manufacturing apparatus described in claim 1 ,the mark imparted to the sheet by the marking unit differing from the mark on the feedstock.6. The sheet manufacturing apparatus described in claim 1 ,the marking unit forming the mark on both front and back sides of the sheet. The present invention relates to a sheet manufacturing apparatus.A paper recycling system having a dry defibrating unit that shreds and defibrates paper, a first conveyance unit that conveys the defibrated material defibrated by the dry defibrating unit, an air classifier that classifies and deinks the defibrated material conveyed by the first conveyance unit, a second conveyance unit that conveys the defibrated material de-inked by the classifier, and a paper-forming unit that forms paper from the defibrated ...

METHOD FOR MANUFACTURING COMPACT

A method for manufacturing a compact includes a mixing step of mixing a fiber and a powder of a binder to obtain a mixture; an accumulating step of accumulating the mixture to form a web; a humidifying step of adding water to the web; and a forming step of heating and pressurizing the water-added web to obtain a compact. The binder binds between fiber molecules by the addition of water. The powder has a specific surface area of 0.2 m/g or more. 1. A method for manufacturing a compact , comprising:a mixing step of mixing a fiber and a powder of a binder to obtain a mixture;an accumulating step of accumulating the mixture to form a web;a humidifying step of adding water to the web; anda forming step of heating and pressurizing the water-added web to obtain a compact, whereinthe binder binds between fiber molecules by the addition of water; and{'sup': '2', '#text': 'the powder has a specific surface area of 0.2 m/g or more.'}2. The method for manufacturing a compact according to claim 1 , wherein{'sup': '2', '#text': 'the powder has a specific surface area of 20.0 m/g or less.'}3. The method for manufacturing a compact according to claim 1 , whereinthe binder is selected from starch and dextrin.4. The method for manufacturing a compact according to claim 1 , whereinthe humidifying step performs humidification such that the web has a moisture content of 7.0 mass % or more and 50.0 mass % or less with respect to the total mass of the web.5. The method for manufacturing a compact according to claim 1 , whereina content of the binder in the web is 1.0 mass % or more and 30.0 mass % or less with respect to the total mass of the web.6. The method for manufacturing a compact according to claim 1 , whereinthe heating is performed at a temperature of 50.0° C. or more and 100.0° C. or less. The present application is based on, and claims priority from JP Application Serial Number 2020-163403, filed Sep. 29, 2020, the disclosure of which is hereby incorporated by reference herein ...

Method for isolating alpha cellulose from lignocellulosic materials

The present invention involves an environmentally friendly process and apparatus for the delignification of lignin-containing materials, such as cardboard newspaper or agricultural or tree pruning wastes. This process produces cellulose using low temperatures and low concentrations of hydrogen peroxide. It can be performed using a column fitted with a semipermeable gasket that pressurizes the column by retaining oxygen released by action of the hydrogen peroxide on a lignin-containing material.

METHOD FOR DEINKING RECYCLED PAPER

A method for deinking recycled paper, including a pulping step, and then a flotation step, which includes introduction of at least one dispersant of the polyacrylate type, representing from 0.05 to 3.5 wt % of the mineral fillers of the recycled paper. A specific dispersant is used during the flotation step of the method for deinking recycled paper. 1: A method for deinking recycled paper , comprising:pulping by putting recycled paper into suspension with at least water to form a pulp, thenperforming a flotation by circulating air bubbles in at least one chamber receiving the pulp, diluted in aqueous solution, so as to constitute two adjacent phases, the upper phase comprising ink and intended to be removed, andintroducing at least one deinking agent during the pulping and/or the flotation,the method further comprising introducing at least one dispersant of the polyacrylate type, in an amount varying between 0.05 and 3.5 wt % relative to the weight of mineral fillers of the recycled paper.2: The method according to claim 1 , wherein at least one part of the dispersant is introduced during the pulping.3: The method according to claim 1 , wherein the dispersant has a molecular weight between 2000 g·moland 100 000 g·mol claim 1 , as determined by size exclusion chromatography (SEC).4: The method according to claim 1 , wherein the dispersant is introduced during the pulping in an amount varying between 0.25 and 3 wt % relative to the weight of the mineral fillers of the recycled paper.5: The method according to claim 1 , wherein soda and/or hydrogen peroxide are also added during the pulping.6: The method according to claim 1 , wherein the dispersant is an acrylic acid homopolymer claim 1 , optionally in neutralized form.7: A method for deinking recycled paper claim 1 , comprising introducing a dispersant of the polyacrylate type to recycled paper claim 1 , in an amount varying between 0.05 and 3.5 wt % relative to the weight of mineral fillers of the recycled paper.8: ...

Method for manufacturing recycled pulp from used sanitary products

A recycled pulp that is reusable sanitary products is efficiently manufactured by recovering pulp fiber from used sanitary products containing the pulp fiber and a polymer absorbent. The method of the present invention comprises: a step applying a mechanical force to the used sanitary products in an aqueous solution containing a polyvalent metal ion or an acidic aqueous solution with a pH of 2.5 or lower and thus degrading the used sanitary products into the pulp fiber and other materials; a step separating the pulp fiber from the mixture of the pulp fiber and other materials that has been formed in the degradation step; and a step treating the pulp fiber thus separated with an ozone-containing aqueous solution with a pH of 2.5 or lower.

A METHOD OF PRODUCING FILLER

The invention provides a method of producing a filler comprising calcium carbonate (PCC), preferably to be used in paper or paper board production or in fibre based composites. The method of the invention comprises the steps of; —providing fly ash generated in paper or paper board production; —fractionating said fly ash in at least one step, whereby a coarser fraction is separated from a finer fraction; —forming a suspension of said coarser fraction; —adding carbon dioxide to said suspension to form precipitated calcium carbonate. The method of the invention avoids problems with high amounts of arsenic and heavy metals in the production of filler comprising PCC, when using ash generated in paper or paper board production as a raw material. It has been shown that harmful elements, such as arsenic and heavy metals, are primarily accumulated in the finer fractions of the fly ash. Thus, by using the coarser fraction in the step of carbonation, the amount of arsenic and heavy metals in the final product is reduced. 1. A method of producing filler , comprising precipitated calcium carbonate (PCC) , said method comprising the steps of;providing fly ash generated in paper or paper board production;fractionating said fly ash in at least one step, whereby a coarser fraction is separated from a finer fraction;forming a suspension of said coarser fraction;adding carbon dioxide to said suspension to form precipitated calcium carbonate.2. The method according to claim 1 , wherein the coarser fraction has an average particle size greater than 50 μm claim 1 , and the finer fraction has an average particle size of 50 μm or less.3. The method according to claim 1 , wherein said coarser fraction is ground to exhibit an average particle size of 20 μm or less prior to the step of forming a suspension.4. A method according to claim 1 , wherein the fly ash includes magnetic material that is removed from said coarser fraction by magnetic separation.5. The method according to claim 1 , ...

LIGNOCELLULOSIC COMPOSITES PREPARED WITH AQUEOUS ALKALINE AND UREA SOLUTIONS IN COLD TEMPERATURES SYSTEMS AND METHODS

Unique, inexpensive, and strong biocomposites are obtained from blending cellulose matrix materials with lignocellulosic reinforcement materials with the aid of alkaline aqueous solvent and cold temperatures. These lignocellulosic composites (LCs) are produced without use of any thermoplastic resins, adhesives, catalysts, plasticizers or complicated chemical or physical procedures. The LCs include a matrix and a reinforcement material. The matrix is a cellulose material (e.g., cotton, hemp, flax, or wood) that is liquefied using an aqueous alkaline solvent solution under cold temperatures to more readily adhere and/or incorporate/encapsulate the lignocellulosic reinforcements (wood chips, fibers, and other lignocellulosic sources). 1. A method of producing a lignocellulosic composite , the method comprising:providing an alkaline solution comprising a predetermined volume of solvent, a predetermined volume of urea and a predetermined volume of water, said alkaline solution having a measurable temperature;adding or removing heat to adjust the measurable temperature of the alkaline solution to a predetermined temperature, wherein the predetermined temperature is negative 10 degrees Celsius or lower;combining a predetermined quantity of refined cellulose with the alkaline solution at said predetermined temperature to form a gel-like cellulose matrix;combining a predetermined quantity of reinforcement material with the cellulose matrix to form a dough;removing substantially all of the solvent and urea; anddrying the dough.2. The method of claim 1 , wherein the predetermined temperature to which the alkaline solution is lowered is in the range of negative 15 degrees Celsius to negative 10 degrees Celsius.3. The method of claim 1 , wherein the solvent comprises a metal alkaline salt.4. The method of claim 1 , wherein the solvent comprises one or more of LiOH HO claim 1 , NaOH claim 1 , or KOH.5. The method of claim 1 , wherein at least 10% (by mass) of the predetermined ...

A METHOD FOR MEASURING DISINTEGRATION OF A FIBROUS PRODUCT

The present invention provides a method and system for measuring disintegration of a fibrous product. The method comprises disintegration of a sample of the fibrous product in an aqueous solution, optionally promoted by mechanical energy, passing the aqueous solution through a screen to obtain a permeate and retained fraction on the screen, and analyzing at least one parameter from the permeate for example by a gravimetric analysis, an optical analysis, an electrochemical analysis, a volumetric analysis, or combination thereof. Advantages include adjustability, speed, and high correlation with actual flushability or repulpability of the fibrous product, and utility in a process for manufacturing a fibrous sheet exhibiting controlled disintegration, such as a flushable or repulpable fibrous sheet. 1. A method for measuring a disintegration of a fibrous product , comprising:{'sub': 0', 'i, '(a) immersing at least one sample of a fibrous product in an excess of an aqueous solution in a receptacle, at a time point tfor initiating the disintegration of a sample(s), the sample having an initial dry weight m;'}(b) optionally subjecting the immersed sample(s) to a mechanical energy for promoting the disintegration of the sample(s) into disintegrated sample(s);{'sub': '1', '(c) passing the aqueous solution containing a first disintegrated sample of the fibrous product after a first time period at a time point tthrough a first screen to obtain a permeate containing a passed fraction of the disintegrated sample, and a retained fraction of the disintegrated sample on the first screen, and optionally continuing immersion of any further immersed sample(s); and'}(d) subjecting the permeate containing the passed fraction of the disintegrated sample from step (c) to an analysis of at least one parameter for obtaining at least one characterizing value.2. The method of claim 1 , wherein the obtained at least one characterizing value is compared to a predetermined reference value ...

FIBER ASSEMBLY-FORMING METHOD AND FIBER ASSEMBLY-FORMING APPARATUS

A fiber assembly-forming method includes providing a water-soluble resin to a first feedstock containing fibers, forming disintegrated matter by disintegrating the first feedstock provided with the water-soluble resin, depositing the disintegrated matter, and providing water to the deposited disintegrated matter. 1. A fiber assembly-forming method comprising:providing a water-soluble resin to a first feedstock containing fibers;forming disintegrated matter by disintegrating the first feedstock provided with the water-soluble resin;depositing the disintegrated matter; andproviding water to the deposited disintegrated matter.2. The fiber assembly-forming method according to claim 1 , wherein in the provision of the water-soluble resin claim 1 , the water-soluble resin is provided to a surface of the first feedstock.3. The fiber assembly-forming method according to claim 1 , wherein the mass of the water provided in the provision of the water is one-hundredth times to 100 times the mass of the water-soluble resin provided in the provision of the water-soluble resin.4. The fiber assembly-forming method according to claim 1 , wherein the temperature of the water provided in the provision of the water is 40° C. to 200° C.5. The fiber assembly-forming method according to claim 1 , wherein in the formation of the disintegrated matter claim 1 , the first feedstock provided with the water-soluble resin and a second feedstock unprovided with the water-soluble resin are disintegrated.6. A fiber assembly-forming method comprising:preparing a wet web; andproviding a water-soluble resin to the wet web.7. The fiber assembly-forming method according to claim 6 , wherein the preparation of the wet web includes forming disintegrated matter by disintegrating a feedstock containing fibers claim 6 , depositing the disintegrated matter claim 6 , and providing water to the deposited disintegrated matter.8. A fiber assembly-forming method comprising:preparing material containing fibers and ...

Enzymatic Treatment of Virgin Fiber and Recycled Paper to Reduce Residual Mineral Oil Levels for Paper Production

Compositions comprising enzyme compositions are provided. Also provided are methods of treating virgin fiber and recycled wastepaper containing mineral oils using the compositions comprising enzyme compositions. The mineral oils generally originate from wastepapers with mineral oil based inks and certain other hydrocarbon-based chemistries used during the manufacturing, paperboard converting, and packaging process. The enzymes break down or modify mineral oils present in the fiber and paper, mobilize and liberate them from the fibers, and increase removal of mineral oils during paper recycling, pulping and papermaking processes. The method results in the break down or modification of mineral oil components in wastepaper, recycled pulp, and paper products by the enzyme compositions so that the mineral oils can be more efficiently detached and removed. The resulting pulp and paper has much reduced mineral oil concentration or less problematic forms of mineral oils and is beneficial for making food packaging paper products.

Lignocellulosic conversion processes and products

Processes for converting lignocellulose to feedstock and downstream products are disclosed. The processes may include acid treatment of lignocellulose to produce a fermentation feedstock. In various instances, the processes include recovery or recycling of acid, such as recovery of hydrochloric acid from concentrated and/or dilute streams. Downstream products may include acrylic acid-based products such as diapers, paper and paper-based products, ethanol, biofuels such as biodiesel and fuel additives, and detergents.

FIBER ASSEMBLY-FORMING METHOD, FIBER ASSEMBLY-FORMING APPARATUS, AND SHEET

A fiber assembly-forming method includes providing a first feedstock containing fibers with a binding material bonding the fibers to each other, forming disintegrated matter by disintegrating the first feedstock provided with the binding material, depositing the disintegrated matter, and heating the deposited disintegrated matter. 1. A fiber assembly-forming method comprising:providing a first feedstock containing fibers with a binding material bonding the fibers to each other;forming disintegrated matter by disintegrating the first feedstock provided with the binding material;depositing the disintegrated matter; andheating the deposited disintegrated matter.2. The fiber assembly-forming method according to claim 1 , wherein in the provision of the binding material claim 1 , the binding material is applied to a surface of the first feedstock.3. The fiber assembly-forming method according to claim 1 , wherein in the formation of the disintegrated matter claim 1 , the first feedstock provided with the binding material and a second feedstock unprovided with the binding material are disintegrated.4. A fiber assembly-forming method comprising:preparing material containing fibers and a binding material bonding the fibers to each other;forming disintegrated matter by disintegrating the material;depositing the disintegrated matter; andheating the deposited disintegrated matter, wherein in the preparation of the material, the material is prepared such that the binding material accounts for 6.0% by mass or more of the fibers.5. The fiber assembly-forming method according to claim 4 , wherein in the preparation of the material claim 4 , the material contains a resinous substance made of the binding material.6. The fiber assembly-forming method according to claim 1 , wherein the binding material is a thermoplastic resin or a thermosetting resin and the glass transition temperature of the binding material is 45° C. or higher.7. A fiber assembly-forming apparatus comprising:a ...

APPARATUS AND METHOD FOR THE TREATMENT OF A SUBSTRATE WITH OZONE BUBBLES

Apparatus () for the treatment of one or more substrates comprising a treatment chamber configured to receive a liquid medium and one or more substrates; a supply of a treatment gas comprising ozone; and one or more conduits to convey said treatment gas to a bubble generator () wherein said bubble generator is operable to form bubbles of said treatment gas in said liquid medium, wherein the apparatus comprises a multiplicity of solid particles (). A method of treating one or more substrates, the method comprising agitating said one or more substrates in a treatment formulation comprising a multiplicity of solid particles, a liquid medium and bubbles of ozone. 1. Apparatus for the treatment of one or more substrates comprising:a treatment chamber configured to receive a liquid medium and one or more substrates;a supply of a treatment gas comprising ozone; andone or more conduits to convey said treatment gas to a bubble generator wherein said bubble generator is operable to form bubbles of said treatment gas in said liquid medium, wherein the apparatus comprises a multiplicity of solid particles.2. Apparatus as claimed in further comprising:a gas source to provide a feed gas comprising oxygen;a plasma generator comprising electrodes, having a space between them;one or more delivery conduits to transport said feed gas from the gas source through the space between the electrodes;a power source to apply a voltage across the electrodes to dissociate the oxygen to form said treatment gas comprising ozone.3. Apparatus as claimed in wherein the electrodes have a space between them of no more than 10 mm claim 2 , preferably no more than 1 mm claim 2 , and preferably at least 0.001 mm.4. Apparatus as claimed in claim 2 , wherein said apparatus employs a voltage from about 1 mV to about 10 claim 2 ,000V claim 2 , preferably from about 150 to about 450V.5. Apparatus as claimed in claim 1 , wherein said bubbles have an average diameter of no more than 10 mm claim 1 , preferably ...

Methods for deinking wastepaper by combined use of cutinase and chemical reagents

The present invention provides methods for deinking wastepaper by combined use of cutinase and chemical reagents, which relates to the field of enzyme engineering. The method comprises the following steps: pulp preparation, enzymatic hydrolysis, pulp washing and dewatering, and flotation. The enzyme for enzymatic hydrolysis is cutinase at a concentration of 10-20 U/g absolute dry pulp; and 0.5-4% NaSiO, 0.1-0.8% MgSO, 0.1-0.8% EDTA, 0.1-4% HOare used in the chemical treatment. With combined use of enzymatic and chemical treatment, the present invention has solved the problem of the current enzymatic method for deinking that requires large dosage of enzymes and thus high cost. Through proper choice of the kind and the amount of chemical reagents, synergistic effects of the enzymatic and chemical treatment can be achieved, thus increasing the effectiveness of the deinking process. In addition, this method does not require alkaline chemicals, which alleviates the problem of sewage treatment associated with conventional deinking methods. 1. A method for wastepaper deinking by combined use of cutinase and chemical reagents , comprising: pulp preparation , enzymatic hydrolysis , chemical treatment , pulp washing and dewatering , and flotation , wherein the enzyme used for the enzymatic hydrolysis is cutinase with a concentration of 10-20 U/g absolute dry pulp , and the solution used in the chemical treatment contains 0.5-4% NaSiO , 0.1-0.8% MgSO , 0.1-0.8% EDTA , and 0.1-4% HO.2. The method of claim 1 , wherein the enzymatic hydrolysis is carried out at 40-60° C. for 100-200 minutes.3. The method of claim 1 , wherein the chemical treatment is carried out at 50-70° C. for 30-120 minutes.4Thermobifida fuscaFusarium solani.. The method of claim 1 , wherein the cutinase is from or5. The method of claim 1 , wherein the cutinase is a cutinase having an NCBI GenBank accession number of AAZ54920 claim 1 , AAZ54921 or AAA33334 claim 1 , or an active cutinase having an amino acid ...

Papermaking Additive Compositions and Methods and Uses Thereof

The present specification discloses papermaking additive compositions, articles of manufacture, containers or kits comprising such compositions, and methods and uses to increase separation of cellulose fibers from a pulp, to remove one or more impurities and/or one or more contaminates from a pulp and/or a paper material and to remove an ink from a pulp and/or a paper material. 1. A liquid composition comprising a treated , fermented yeast supernatant including bio-nutrients , minerals and amino acids , and about 1% to about 15% by weight of one or more nonionic surfactants , wherein the composition lacks active enzymes contributed by yeast during fermentation due to the treatment , and wherein the composition has a pH of about 2.5 to about 5.0.2Brettanomyces, Candida, Cyberlindnera, Cystofilobasidium, Debaryomyces, Dekkera, Fusarium, Geotrichum, Issatchenkia, Kazachstania, Kloeckera, Kluyveromyces, Lecanicillium, Mucor, Neurospora, Penicillium, Pichia, Rhizopus, Rhodosporidium, Rhodotorula, Saccharomyces, Schizosaccharomyces, Thrichosporon, Torulaspora, Torulopsis, Verticillium, Yarrowia, Zygosaccharomyces,Zygotorulaspora.. The liquid composition according to claim 1 , wherein the treated fermented yeast supernatant is produced from a culture containing yeast belonging to the genus or3. The liquid composition according to claim 1 , comprising at most 95% by weight of the treated claim 1 , fermented yeast supernatant.4. The liquid composition according to claim 1 , wherein the one or more nonionic surfactants comprises a polyether nonionic surfactant claim 1 , a polyhydroxyl nonionic surfactant claim 1 , and/or a biosurfactant.5. The liquid composition according to claim 4 , wherein the polyhydroxyl nonionic surfactant comprises a sucrose ester claim 4 , an ethoxylated sucrose ester claim 4 , a sorbital ester claim 4 , an ethoxylated sorbital ester claim 4 , an alkyl glucoside claim 4 , an ethoxylated alkyl glucoside claim 4 , a polyglycerol ester claim 4 , or an ...

METHOD FOR PRODUCING PULP FIBERS FOR CELLULOSE NANOFIBERIZATION, AND PULP FIBERS FOR CELLULOSE NANOFIBERIZATION

The purpose of the present invention is to provide a method which is for producing pulp fibers for cellulose nanofiberization from pulp fibers of used sanitary products, and which can produce pulp fibers for cellulose nanofiberization that have low lignin content and a low distribution thereof and that have excellent cellulose nanofiberization properties. This method is described below. The method is characterized by involving: a step for supplying, from a mixed solution supply port () to a treatment tank (), a mixed solution () which contains superabsorbent polymers and pulp fibers derived from used sanitary products; a step for supplying an ozone-containing gas () from an ozone-containing gas supply port () to a treatment solution () inside of the treatment tank (); a step in which, by raising the ozone-containing gas () while lowering the superabsorbent polymers and pulp fibers in the treatment tank (), the ozone-containing gas () is brought into contact with the superabsorbent polymers and the pulp fibers, and pulp fibers for cellulose nanofiberization are formed from the pulp fibers; and a step for discharging the treatment solution () from a treatment solution discharge port (), wherein the pulp fibers for cellulose nanofiberization have a lignin content of less than or equal to 0.1 mass %. 1. A method of manufacturing pulp fibers for cellulose nanofiberization from pulp fibers of used hygiene products , comprising steps of:a preparation step of preparing a treatment tank which includes a liquid mixture supply port, and a treatment liquid discharge port and an ozone containing gas supply port that are arranged below the liquid mixture supply port,a liquid mixture supply step of supplying a liquid mixture which includes super absorbent polymers and the pulp fibers that derive from the used hygiene products and water, from the liquid mixture supply port to the treatment tank,an ozone containing gas supply step of supplying ozone containing gas from the ozone ...

SUPPORTED TOOTHED PLATES IN A DISPERSER

Dispersers and disperser plate segments configured to be mounted in dispersers, wherein the disperser plate segments comprise rows of teeth and wherein bridges span gaps between adjacent teeth in at least one of the rows of teeth, wherein the bridges are separated from a substrate of the front face by an open space in the gap. In other exemplary embodiments, a buttress extends from at least one face of the tooth to support the tooth. 1. A plate segment comprising:a substrate having a front side and a back side, wherein the back side is configured to be mounted to a support disc of the disperser;rows of teeth protruding from the front side of the substrate, wherein each of the rows are arranged along an arc extending from one side of the plate segment to an opposite side of the plate segment;in at least one of the rows of teeth, adjacent teeth are joined by a bridge spanning a gap between the adjacent teeth, wherein the bridge is elevated above the front side of the substrate such that the bridge is separated from the front surface by an open space in the gap.2. The plate segment of claim 1 , wherein the bridge is at or near an end of the adjacent teeth away from the front side of the substrate.3. The plate segment of claim 1 , wherein the bridge joins a sidewall of each of the adjacent teeth.4. The plate segment of claim 1 , wherein the bridge joins the sidewalls of the adjacent teeth at an elevation of the teeth above the front side in a range of one-third to an entirety of a height of the adjacent teeth above the front side.5. The plate segment of claim 1 , wherein the bridge has a shape selected from the group consisting of: a circular or oval shape in cross section at a mid-point of the bridge between the adjacent teeth claim 1 , a rectangular shape in cross section at a mid-point of the bridge between the adjacent teeth; a tapered shape in cross section at a mid-point of the bridge between the adjacent teeth; and a tear drop shape in cross section at a mid- ...

Repulping Method For The Removal Of Lignocellulosic Hornification

This invention uses lignin, which is the main chemical by-product of the original pulping process in manufacturing wood pulp for use in cardboard and paper, to create a repulping solution Lignocellulosic Hornification Remover (“LHR”) comprising a customized mixture of dipolar aprotic such as dimethyl sulfoxide (DMSO) and water, the LHR having greater frequency and energy and lignocellulosic hornification removal results than pure DMSO or other cellulose swelling chemical agents previously used in conventional repulping. The LHR creates and secures a special type of swelling (“intramicellar swelling”) in the material being re-pulped. Intramicellar swelling is a dimensional type of swelling, not the normal swelling of pulp material which is a directional one. The intramicellar swelling influences and breaks down both the intra- and intermolecular H-bonds of both amorphous and crystalline cellulose (i.e., cellulose micelle crystallites) and renders accessible cellulose with open H-bond packing in the material being re-pulped. As intramicellar swelling is attained, the following desirable features in the material being re-pulped occur: increased flexibility of fibers, opening of H-bonding, detachment of ink, additives and adhesives.

Conveyance device and fibrous material recycling device

Provided is technology for effectively removing fiber from a mesh belt. A second web former for conveying a second web containing fiber deposited on a mesh belt 72 having multiple holes 72 a has a brush roller 710 with numerous bristles 712 protruding from the surface and disposed in contact with the mesh belt 72. The sectional area of the bristles 712 of the brush roller 710 is smaller than the open area of the holes 72 a in the mesh belt 72 so that the distal ends of the bristles 712 can enter the holes 72 a.

Use of a strength composition for increasing wet dimensional stability of a moulded pulp article

The invention relates to a use of a strength composition for increasing wet dimensional stability of a moulded pulp article. The moulded pulp article is produced by a method which comprises obtaining a fibre slurry and feeding it to a forming tank of a moulding apparatus, forming a moulded pulp article from the fibre slurry, and drying the moulded pulp article. The strength composition comprises at least one permanent wet strength resin and the strength composition is added to the fibre slurry before the forming of the moulded pulp article. 2. The method according to claim 1 , wherein pH of the alkaline environment is in the range of 10-14 claim 1 , typically 11-14 claim 1 , more typically 12-14.3. The method according to claim 1 , wherein the permanent wet strength resin is a cross-linked resin and selected from polyamidoamine-epihalohydrin resins or polydiisocyanate resins.4. The method according to claim 1 , wherein the strength composition comprises wet strength resin claim 1 , which is polyamidoamine-epihalohydrin resin.5. The method according to claim 4 , wherein the polyamidoamine-epihalohydrin resin has an azetidinium content of <80% claim 4 , preferably <70% claim 4 , more preferably <60% claim 4 , even more preferably <50%.6. The method according to claim 4 , wherein the polyamidoamine-epihalohydrin resin has a charge density of 1.5-4.5 meq/g claim 4 , preferably 2.0-4.0 meq/g claim 4 , more preferably 2.1-3.0 meq/g.7. The method according to wherein the strength composition is added in such amount that the zeta potential of the fibre slurry remains <−2.0 mV after the addition of the strength composition.8. The method according to wherein the strength composition is added in amount that results 1.3-26 kg permanent wet strength resin/ton dry fibre slurry claim 1 , preferably 2.6-18.2 kg permanent wet strength resin/ton dry fibre slurry claim 1 , more preferably 3-15 kg permanent wet strength resin/ton dry fibre slurry claim 1 , even more preferably 5.2-13 ...

METHOD FOR PRODUCING PULP FIBRES FOR SACCHARIFICATION, AND AQUEOUS SOLUTION OF PULP FIBRES FOR SACCHARIFICATION

The purpose of the present disclosure is to provide a method for producing pulp fibres for saccharification from the pulp fibres of used sanitary items, said pulp fibres for saccharification having low lignin contents distributed within a narrow range, and enabling the production of pulp fibres for saccharification having superior saccharification properties. The production method according to the present disclosure is characterised by comprising the following: a step for supplying a mixed solution () containing pulp fibres and highly-absorbent polymers sourced from used sanitary items to a treatment tank () via a mixed-solution supply port (); a step for supplying an ozone-containing gas () to a treatment solution () within the treatment tank () via an ozone-containing-gas supply port (); a step for lifting the ozone-containing gas () whilst lowering the pulp fibres and highly-absorbent polymers within the treatment tank (), thereby bringing the ozone-containing gas () into contact with the pulp fibres and highly-absorbent polymers, and forming pulp fibres for saccharification from the pulp fibres; and a step for discharging the treatment solution () via a treatment-solution discharge port (). The method is further characterised in that the pulp fibres for saccharification have lignin contents of 0.1% or less. 1. A method of manufacturing pulp fibers for saccharification from pulp fibers of used hygiene products , comprising steps of:a preparation step of preparing a treatment tank which includes a liquid mixture supply port, and a treatment liquid discharge port and an ozone containing gas supply port that are arranged below the liquid mixture supply port,a liquid mixture supply step of supplying a liquid mixture which includes super absorbent polymers and the pulp fibers that derive from the used hygiene products and water, from the liquid mixture supply port to the treatment tank,an ozone containing gas supply step of supplying ozone containing gas from the ...

METHOD FOR PRODUCING RECYCLED FIBERS, AND RECYCLED FIBERS

In this method of producing recycled fibers by removing superabsorbent polymers from fibers containing superabsorbent polymers, recycled fibers are efficiently produced while the superabsorbent polymers are suitably removed from the fibers. This method produces recycled fibers from a mixture of fibers and superabsorbent polymers. This method involves a continuous treatment step (S) in which, in a treatment tank () having a treatment solution that can dissolve superabsorbent polymers, superabsorbent polymers are dissolved while a mixed solution () that contains water and fibers containing superabsorbent polymers is continuously supplied at a first flow rate, and the treatment solution () containing the removed fibers is continuously discharged to outside of the treatment tank at a second flow rate. 1. A method of producing recycled fibers from a mixture of fibers and superabsorbent polymers , the method comprising:a continuous treatment step of continuously supplying a liquid mixture including fibers containing the superabsorbent polymers and water at a first flow rate into a treatment tank holding a treatment solution capable of dissolving the superabsorbent polymers, while continuously discharging the treatment solution containing the fibers from which the superabsorbent polymers has been dissolved and removed at a second flow rate out of the treatment tank.2. The method according to claim 1 , whereinthe continuous treatment step includes a step of continuously supplying the liquid mixture through a top of the treatment tank while continuously discharging the treatment solution through a bottom of the treatment tank.3. The method according to claim 2 , whereinthe treatment solution capable of dissolving the superabsorbent polymers is an aqueous solution containing a gaseous substance that decomposes the superabsorbent polymers in a soluble manner, andthe continuous treatment step further includes a delivery step of continuously delivering bubbles of the gaseous ...

Industrial Deinking of Ink Compositions

The ink composition comprises pigment particles and a stimulus responsive dispersing agent for dispersing said pigment particles in a protic polar solvent, for instance for inkjet printing, which stimulus responsive dispersing agent comprises an anchoring part for anchoring to said pigment particles, a stimulus responsive part as shown in formula (XXa) or (XXb) and a hydrophilic part for solvent stabilization of the pigment, wherein the stimulus responsive part upon exposure to a stimulus initiates decomposition of the stimulus responsive dispersing agent. The paper with the printed ink can be deinked in an industrial deinking process. 26.-. (canceled)7. The ink composition according to claim 1 , wherein the photolabile group is selected from the group consisting of:2-phenyl-2-hydroxy-1-phenylethanone moiety;2-oxo-1,2-diphenylethyl formate moiety;hydroxyacetophenone derivative;alkylaminoacetophenone derivative;benzyl ketal derivativea benzoylphosphinoxide;a benzoylphosphinate;a bisacyl- or bisbenzoyl phosphine oxide.8. The ink composition according to claim 1 , wherein the anchoring part comprises an elongated chain with a chain length of at least 8.9. The ink composition according to claim 1 , wherein the hydrophilic stabilizing part comprises a polyalcohol group.10. The ink composition according to claim 1 , wherein the hydrophilic stabilizing part comprises a polar group or a charged group claim 1 , such as an acid anion.11. (canceled)12. An ink composition according to claim 1 , configured to print onto a substrate claim 1 , such as paper.13. The ink composition according to claim 12 , further comprising the step of decomposing the stimulus responsive dispersing agent into the first agent comprising the anchoring part claim 12 , which is a hydrophobic moiety claim 12 , and the second agent comprising the hydrophilic stabilization part.14. The ink composition according to claim 13 , wherein the printing comprises an application step and a drying step and wherein ...

METHOD FOR RECOVERING PULP FIBERS FROM USED ABSORBENT ARTICLE

A method is provided for recovering pulp fibers having little damage from a used absorbent article that contains pulp fibers and a superabsorbent polymer. The used absorbent article is treated at a temperature of greater than or equal to 80° C. with an organic acid aqueous solution having a pH no greater than 2.5, and the superabsorbent polymer is deactivated. Preferably, the pulp fibers and the deactivated superabsorbent polymer are separated from the used absorbent article after treatment with the organic acid aqueous solution, and further, a mixture including the separated pulp fibers and deactivated superabsorbent polymer is treated with an oxidizing agent, the deactivated superabsorbent polymer is decomposed, reduced in molecular weight and solubilized. 1. A method of recovering pulp fibers from a used absorbent article containing pulp fibers and a superabsorbent polymer , wherein the method includes a step of treating the used absorbent article at a temperature of 80° C. or higher with an organic acid aqueous solution having a pH of no higher than 2.5 , to inactivate the superabsorbent polymer.2. The method according to claim 1 , which further includes a step of separating the pulp fibers and a inactivated superabsorbent polymer from the used absorbent article that has been treated with the organic acid aqueous solution.3. The method according to claim 2 , which further includes a step of treating a mixture comprising separated pulp fibers and an inactivated superabsorbent polymer with an oxidizing agent to decompose claim 2 , reduce in molecular weight and solubilize the inactivated superabsorbent polymer.4. The method according to claim 3 , which further includes a step of separating the pulp fibers from the mixture that has been treated with the oxidizing agent.5. The method according to claim 1 , wherein the organic acid is citric acid.6. The method according to claim 5 , wherein a citric acid concentration in the organic acid aqueous solution is 2 mass % ...

LIGNOCELLULOSIC COMPOSITES PREPARED WITH AQUEOUS ALKALINE AND UREA SOLUTIONS IN COLD TEMPERATURES SYSTEMS

Unique, inexpensive, and strong biocomposites are obtained from blending cellulose matrix materials pith lignocellulosic reinforcement materials with the aid of alkaline aqueous solvent and cold temperatures. These lignocellulosic composites (LCs) are produced without use of any thermoplastic resins, adhesives, catalysts, plasticizers or d chemical or physical procedures. The LCs include a matrix and a reinforcement material. The matrix is a cellulose material (e.g., cotton, hemp, flax, or wood) that is liquefied using an aqueous alkaline solvent solution under cold temperatures to more readily adhere and or incorporate/encapsulate the lignocellulosic reinforcements (wood chips, fibers, and other lignocellulosic sources). 1. A composition comprising refined cellulosic material and untreated lignocellulosic reinforcement material , wherein said composition does not comprise an adhesive and does not comprise a resin , and wherein the composition is completely biodegradable and compostable.2. The composition of claim 1 , wherein the composition comprises 15% -35% by weight of the refined cellulosic material and 65% -85% by weight of untreated lignocellulosic reinforcement material.3. The composition of claim 2 , wherein the composition comprises about 25% by weight of the refined cellulosic material and about 75% by weight of untreated lignocellulosic reinforcement material.4. The composition of claim 1 , wherein the untreated lignocellulosic reinforcement material consists of high aspect ratio fibers.5. The composition of claim 4 , wherein said high aspect ratio fibers have a length of equal to or greater than 5 millimeters in one dimension and less than 5 millimeters in every other dimension.6. The composition of claim 1 , wherein the untreated lignocellulosic reinforcement material consists of low aspect ratio chips.7. The composition of claim 6 , wherein said low aspect ratio chips have a length of equal to or greater than 5 millimeters in two or three dimensions8. ...

EMULSIFYING AGENT FOR USE IN PERSONAL CARE PRODUCTS AND INDUSTRIAL PRODUCTS

An emulsifying agent comprising an amount of soy whey protein is disclosed herein, the soy whey protein having been isolated from processing streams. The emulsifying agent is especially suitable for producing a personal care product or industrial product. 1. An emulsifying agent comprising an amount of soy whey protein.2. The emulsifying agent of claim 1 , wherein the soy whey protein has a SSI of at least about 80% across a pH range of from 2 to 10 and a temperature of 25° C.3. The emulsifying agent of claim 1 , wherein the emulsifying agent comprises 100% by weight of soy whey protein.4. The emulsifying agent of claim 1 , further comprising at least one additional emulsifier.5. The emulsifying composition of claim 4 , wherein the at least one additional emulsifier is selected from the group consisting of mono- and diglycerides of fatty acids claim 4 , esters of monoglycerides of fatty acids claim 4 , propylene glycol monoesters claim 4 , lecithin claim 4 , hydroxylated lecithin claim 4 , dioctyl sodium sulphosuccinate claim 4 , sodium stearoyl-2-lactylate (SSL) claim 4 , calcium stearoyl lactylate (CSL) claim 4 , sorbitan monolaurate (Polysorbate 20) claim 4 , sorbitan monopalmitate (Polysorbate 40) claim 4 , sorbitan monostearate (Polysorbate 60) claim 4 , sorbitan monooleate (Polysorbate 80) claim 4 , sorbitan tristearate claim 4 , stearyl citrate claim 4 , polyglycerol polyricinoleate (PGPR) claim 4 , sodium lauryl ether sulfate (SLES) claim 4 , sodium dodecyl sulfate (SDS) claim 4 , ammonium lauryl sulfate (ALS) claim 4 , cocamide diethanolamine claim 4 , sodium cocoyl isethionate claim 4 , triethanolamine claim 4 , sodium lauroyl sarcosinate (INCI) claim 4 , 2-ethyl-1 claim 4 ,3-hexanediol claim 4 , Poloxamers claim 4 , sodium dodecyl benzenesulfonate claim 4 , and combinations thereof.6. The emulsifying agent of claim 4 , wherein the emulsifying agent comprises between about 5% and about 99.9% by weight of soy whey protein.7. The emulsifying agent of claim 1 ...

REMOVAL OF STICKIES IN THE RECYCLING OF PAPER AND PAPERBOARD

Removal of stickies from waste paper and paperboard is obtained with the use of a modified kaolin-based stickies removal composition. The modified kaolin-based stickies removal composition is produced by modifying the kaolin clay, separating the modified kaolin clay from the non-reactive kaolin clay, and then adding a nonionic surfactant to the modified kaolin-based particles. Removal of stickies is improved by the use of this modified kaolin-based stickies removal composition during the recycling of the waste paper and paperboard. 1. A composition for removing contaminants from waste paper and waste paperboard , wherein the composition comprises a nonionic surfactant and a modified kaolin-based stickies removal component.2. A composition as defined by claim 1 , wherein the nonionic surfactant is selected from a group comprising fatty acid ethoxylates claim 1 , fatty alcohol ethoxylates claim 1 , castor oil ethoxylates claim 1 , polyethylene glycol esters claim 1 , polypropylene glycol esters or blends thereof.3. A composition as defined by claim 1 , wherein the modified kaolin-based stickies removal component is produced by a process which comprises:forming a slurry of dispersed kaolin clay particles;treating the dispersed kaolin clay particles with a modifying reagent; andseparating the modified kaolin-based particles from the non-reactive kaolin-based particles.4. A composition as defined by claim 3 , wherein the modifying reagent is selected from a group comprising a fatty acid claim 3 , hydroxamate claim 3 , sulfonate claim 3 , amine claim 3 , siloxane claim 3 , silane claim 3 , sulfhydryl claim 3 , or blends thereof.5. A method of removing contaminants from waste paper and waste paperboard claim 3 , the method comprising:forming a pulp of waste paper or waste paperboard product;adding a composition comprising a nonionic surfactant and a modified kaolin-based stickies removal component to said pulp to form a mixture; andsubjecting said mixture to a stickies ...

METHOD FOR MANUFACTURING RECYCLED PULP FROM USED SANITARY PRODUCTS

A recycled pulp that is reusable sanitary products is efficiently manufactured by recovering pulp fiber from used sanitary products containing the pulp fiber and a polymer absorbent. The method of the present invention comprises: a step applying a mechanical force to the used sanitary products in an aqueous solution containing a polyvalent metal ion or an acidic aqueous solution with a pH of 2.5 or lower and thus degrading the used sanitary products into the pulp fiber and other materials; a step separating the pulp fiber from the mixture of the pulp fiber and other materials that has been formed in the degradation step; and a step treating the pulp fiber thus separated with an ozone-containing aqueous solution with a pH of 2.5 or lower. 1. A recycled pulp having an ash content of 0.11% by weight or less.2. The recycled pulp of claim 1 , wherein the ash content ranges from 0.05% by weight to 0.11% by weight.3. The recycled pulp of claim 1 , wherein the recycled pulp is recovered from a used sanitary product comprising pulp fibers containing organic waste and superabsorbent polymer.4. The recycled pulp of claim 1 , wherein the recycled pulp includes fluff pulp fibers.5. The recycled pulp of claim 1 , wherein the recycled pulp includes chemical pulp fibers.6. A sanitary product comprising:recycled pulp fibers having an ash content of about 0.11% by weight or less; anda superabsorbent polymer (SAP).7. The sanitary product of claim 6 , wherein the ash content ranges from about 0.05% by weight to about 0.11% by weight.8. The sanitary product of claim 6 , wherein the recycled pulp is recovered from a used sanitary product comprising pulp fibers containing organic waste and superabsorbent polymer.9. The sanitary product of claim 6 , wherein the sanitary product is selected from the group consisting of a disposable diaper claim 6 , an incontinence pad claim 6 , a urine collection pad claim 6 , a sanitary napkin and a panty liner.10. The sanitary product of claim 6 , wherein ...

METHODS OF MAKING PAPER AND PAPER WITH MODIFIED CELLULOSE PULPS

The present invention relates to an improved process for producing chemical cellulose pulp wherein biopolymers are added immediately before, during or after a bleaching step, depending on pulp characteristics and on process conditions used. The biopolymers according to the present invention are starches chemically modified by an etherification reaction. This treatment results in a differentiated pulp having improved physical, chemical and mechanical properties when compared with cellulose pulps obtained by traditional processes. The use of said biopolymer alters the relations between important pulp properties rendering their application in papermaking process advantageous. This differentiation increases the possibilities of use and also of new applications, including for the substitution of pulps produced from other cellulose sources. Thus, the present invention also relates to methods of making paper, such as printing, writing, decorative, special or tissue-type papers, through the use of the cellulose pulps modified by the above process. 17-. (canceled)8. A paper comprising a modified cellulose pulp treated by a process comprising a step of adding during bleaching starch chemically modified by etherification.9. The method paper of claim 8 , wherein the starch is from natural sources selected from corn or manioc.10. The paper of claim 8 , wherein the starch is added in an amount of 5.0 kg/adt to 20.0 kg/adt based on the total amount of pulp.11. The paper of claim 8 , wherein the starch is added approximately at 45° C. to 95° C. claim 8 , with pH from 3 to 11 claim 8 , and contact time between the starch and the pulp in the range of from 10 to 360 minutes.12. The paper of claim 8 , wherein the starch is added in any of the bleaching steps claim 8 , immediately before the bleaching sequence and/or after the bleaching sequence but prior to pulp drying.13. The paper of claim 8 , wherein the paper is tissue-type paper.14. The paper of claim 8 , wherein the paper is ...

Fiber processing device and fibrous feedstock recycling device

A separator has a mesh drum configured as a cylinder that can rotate and has mesh in at least part of the side; and a case that houses the mesh drum. The case has a supply port and a recovery port that communicate with an inside area, which is the inside of the mesh drum; a discharge port that communicates with a discharge area, which is outside the side of the mesh drum; and an inside wall segregating at least part of the inside area, forming a material recovery area. First screened material is supplied from the supply port to the inside area. In the material recovery area, the separator recovers accreted material, which is first screened material that was supplied through the supply port and accreted on the inside surface of the mesh drum, from the recovery port.

METHOD FOR RECOVERING PULP FIBERS FROM USED ABSORBENT ARTICLE

A method is provided for recovering pulp fibers having little damage from a used absorbent article which includes a water permeable front sheet, a water impermeable back sheet and an absorbent body that contains pulp fibers and a superabsorbent polymer. At least one opening with a circle equivalent diameter of 5-45 mm, or 10-45 mm cut, is made in the front sheet and/or the back sheet of the used absorbent article, which is then agitated in an organic acid aqueous solution with a pH of less than or equal to 2.5, and the superabsorbent polymer is deactivated and the pulp fibers and superabsorbent polymer are discharged from the used absorbent article through the opening or cut. 19-. (canceled)10. A method of recovering pulp fibers from a used absorbent article that includes a water-permeable front sheet , a water-impermeable back sheet and an absorbent body containing pulp fibers and a superabsorbent polymer , wherein the method includes a step in which at least one open hole with a circle equivalent diameter of 5 to 45 mm , or at least one 10- to 45-mm cut , is formed in the front sheet and/or back sheet of the used absorbent article , and a step in which the used absorbent article provided with the open hole or cut is agitated in an organic acid aqueous solution with a pH of no higher than 2.5 , the superabsorbent polymer is inactivated , and the pulp fibers and superabsorbent polymer are discharged from the used absorbent article through the open hole or cut , to prepare a mixture including the pulp fibers , inactivated superabsorbent polymer , front sheet material , back sheet material and organic acid aqueous solution.11. The method according to claim 10 , which further includes a step in which the mixture is passed through a screen having a mesh opening of 5 to 15 mm claim 10 , for separation into a mixture containing the pulp fibers claim 10 , the inactivated superabsorbent polymer and the organic acid aqueous solution claim 10 , and a mixture containing the ...

Used paper diaper processing method and apparatus

A processing liquid is generated by mixing a chemical and water in a processing liquid generation region disposed below an inner tank. By further supplying water to raise a water level, the processing liquid is supplied from below the inner tank. This prevents a used paper diaper from coming into contact with water containing no chemical.

PAPER RECYCLING DEVICE AND PAPER RECYCLING METHOD

A paper recycling method includes defibrating first paper by dry type crushing into defibrated material, transporting the defibrated material using a first transport unit, deinking by an air flow classification of the defibrated material after the transporting by the first transport unit, transporting using the second transport unit the defibrated material after the deinking by the classifying process, and forming second paper with the defibrated material after the transporting by the second transport unit. 1defibrating first paper by dry type crushing into defibrated material;transporting the defibrated material using a first transport unit;deinking by an air flow classification of the defibrated material after the transporting by the first transport unit;transporting using the second transport unit the defibrated material after the deinking by the classifying process; andforming second paper with the defibrated material after the transporting by the second transport unit.. A paper recycling method comprising: This is a divisional application of U.S. patent application Ser. No. 15/223,431 of Jul. 29,2016, which is a continuation application of U.S. patent application Ser. No. 14/859,789 filed on Sep. 21, 2015, which is a divisional application of U.S. patent application Ser. No. 14/484,789 filed on Sep. 12, 2014, now U.S. Pat. No. 9,194,081, which is a divisional application of U.S. patent application Ser. No. 13/979,089 filed on Oct. 3, 2013, now U.S. Pat. No. 8,882,965, which is a U.S. national phase application that claims priority to Japanese Patent Application Nos. 2011/004113, 2011/005573, and 2011/005574 filed on Jan. 12, 2011, Jan. 14, 2011, and Jan. 14, 2011 respectively. The entire disclosures of U.S. patent application Ser. Nos. 15/223,431, 14/859,789, 14/484,385 and 13/979,089 and Japanese Patent Application Nos. 2011/004113, 2011/005573, and 2011/005574 are hereby incorporated herein by reference.Technical FieldThe present invention relates to a paper ...

SHEET MANUFACTURING APPARATUS AND SHEET MANUFACTURING METHOD

A recycled sheet in which fibers are bonded via an additive agent includes a history including information that is related to characteristics. 1. A recycled sheet in which fibers are bonded via an additive agent , the recycled sheet comprising:a history including information that is related to characteristics.2. The recycled sheet according to claim 1 ,wherein the history includes the information that is related to at least one of a content of the additive agent, a type of the additive agent, a length of the fibers, a material of the fibers, information on the number of times of being recycled, information corresponding to a type of the recycled sheet, and information on a sheet manufacturing apparatus that is used in recycling.3. The recycled sheet according to claim 1 ,wherein the history is represented by at least one of a character, a symbol, a hole, an unevenness, and a bar code.4. The recycled sheet according to claim 1 ,wherein the additive agent is a complex body in which resin and coagulation inhibitor are integrated.5. The recycled sheet according to claim 1 ,wherein the additive agent is a complex body in which resin and coloring material are integrated.6. The recycled sheet according to claim 1 ,wherein the additive agent is a complex body in which resin, coagulation inhibitor, and coloring material are integrated. This application is a divisional application of U.S. patent application Ser. No. 15/215,866 filed in Jul. 21, 2016, a continuation application of U.S. patent application Ser. No. 14/658,512, filed on Mar. 16, 2015. This application claims priority to Japanese Patent Application No. 2014-061554 filed on Mar. 25, 2014. The entire disclosures of U.S. patent application Ser. Nos. 14/658,512 and 15/215,866, and Japanese Patent Application No. 2014-061554 are expressly incorporated by reference herein.1. Technical FieldThe present invention relates to a sheet manufacturing apparatus and a sheet manufacturing method.2. Related ArtIn the related art, ...

PROCESS AND SYSTEM FOR PRODUCING PULP, ENERGY, AND BIODERIVATIVES FROM PLANT-BASED AND RECYCLED MATERIALS

The presently disclosed subject matter relates to an industrial system for processing various plant materials to produce marketable materials. Particularly, the system integrates subcritical water extraction technology and includes a pre-processing module and a two-stage extractor (processing module) with constant control of temperature, pressure, and/or residence time. In some embodiments, the final product of the disclosed system can include feedstock constituents for biofuel production (sugars and/or oil), biochar, raw materials for various industries (such as pulp for manufacturing paper or cellulose for use in various industries). The disclosed system can be modular or non-modular, stationary or mobile, and can include prefabricated elements with programmed automatic or manual operation so that it can be easily moved and/or assembled on site. 1. (canceled)2. A method of producing pulp comprising:processing a feedstock into a processing size; andusing a subcritical water treatment process, treating the feedstock with a catalyst that comprises an alkaline catalyst at a concentration of about 1.5 to 10 weight percent or less in a reactor assembly having:an operating condition at a pressure and a temperature at a constant level that is held for a defined period of time to break down carbohydrates of a first chain strength to produce a pulp product.3. The method of claim 2 , wherein the feedstock comprises one or more of seeds and agricultural crop wastes and residues such as corn stover claim 2 , wheat straw claim 2 , rice straw claim 2 , sugar cane bagasse claim 2 , and hemp.4. The method of claim 2 , wherein the feedstock comprises hemp.5. The method of claim 2 , wherein the method provides for continuous flow of material through the reactor such that the process provides for continuous manufacture of paper pulp product claim 2 , cellulose claim 2 , or combinations thereof.6. The method of claim 2 , wherein the method is modular and scalable claim 2 , stationary ...

CONTINUOUS PILOT SCALE HYDROTHERMAL HORIZONTAL REACTOR DESIGN FOR MAKING INDUSTRIAL BY-PRODUCTS

The presently disclosed subject matter relates to a horizontal reactor system that can be used for processing various plant material biomass to produce fermentable carbohydrates, paper and pulp products, or both. Particularly, the disclosed system comprises a horizontal reactor vessel comprising a body with first and second ends. The reaction vessel is intended to encompass and retain a reaction medium (i.e., biomass slurry) that is to undergo a biological and/or biochemical reaction. The vessel comprises an internal agitator that functions to mix the contents of the reactor. The agitator is powered by a drive, which can be a motor, positioned outside the reaction vessel. 1. A horizontal bioreactor apparatus comprising:a horizontal reaction vessel comprising an interior and first and second ends;a first hub positioned at the first end of the vessel;a second hub positioned at the second end of the vessel; and a central rotating bore operably connected to the first and second hubs; and', 'one or more arms connected to the central rotating bore and operably connected to the first and second hubs., 'an agitator positioned within the interior of the vessel, the agitator comprising2. The apparatus of claim 1 , wherein the horizontal reaction vessel is constructed from stainless steel or a polymeric material.3. The apparatus of claim 1 , wherein the central rotating bore is coupled to an external drive device via the first or second hub.4. The apparatus of claim 3 , wherein the external drive device is a motor.5. The apparatus of claim 1 , wherein the horizontal reaction vessel is capable of processing about 1-2 liters of biomass slurry per minute.6. The apparatus of claim 1 , wherein the horizontal reaction vessel can accommodate pressures of up to about 1 claim 1 ,550 psi.7. The apparatus of claim 1 , wherein the horizontal reaction vessel can accommodate temperatures of up to about 450° F.8. The apparatus of claim 1 , wherein the horizontal reaction vessel r is ...

FIBER PROCESSING DEVICE AND FIBROUS FEEDSTOCK RECYCLING DEVICE

Technology for efficiently extracting fiber from a feedstock containing fiber. A subunit has a mesh drum configured as a rotatable cylinder with mesh in at least part of its surface, and a case that houses the mesh drum. The case has a first opening and a second opening that communicate with a first area, and a third opening that communicates with a second area. First screened material is supplied from the first opening to the first area. The subunit discharges from the third opening waste, which is a first component of the first screened material moved by an air current from the first area to the second area, and discharges from the second opening by an air current processing feedstock, which is a second component of the first screened material that does not pass through the mesh drum with the air current and remains in the first area. 1. A fiber processing device comprising:a mesh member configured as a rotatable cylinder having mesh in at least part of the circumferential surface; anda case housing the mesh member, and having a first opening and a second opening communicating with a first area inside of the mesh member, and a third opening communicating with a second area outside the mesh member; discharging from the third opening a first component of the separator feedstock that past by an air current through the mesh member and moved from the first area to the second area, and', 'discharging from the second opening a second component of the separator feedstock that did not pass through the mesh member by the air current and remained in the first area., 'the fiber processing device supplying separator feedstock containing fiber from the first opening to the first area,'}2. The fiber processing device described in claim 1 , wherein:the mesh member has multiple blades arrayed in the circumferential direction on the circumferential surface.3. The fiber processing device described in claim 1 , wherein:the mesh member has multiple openings that are longer along the ...

MULTI-LAYER CARDBOARD MATERIAL AND METHOD FOR PRODUCING A MULTI-LAYER CARDBOARD MATERIAL

The invention relates to a multi-layer cardboard material (), comprising at least one first fibrous-material layer (), which has a cellulose-containing base material, and at least one second fibrous-material layer () comprising a mixture of cellulose-containing material and fine material particles, wherein a material of origin for the fine material particles is coco peat and the fine material particles have a particle size <0.5 mm, in particular <0.3 mm. The invention further relates to a method for producing a multi-layer cardboard material (), in particular a multi-layer cardboard web, comprising at least one first and one second fibrous-material layer (), and the use of a fibrous-material layer comprising a mixture of cellulose-containing material and fine material particles. 1. A multi-layer cardboard material comprising:at least one first fibrous-material layer, which comprises a cellulose-containing base material; andat least one second fibrous-material layer including a mixture of cellulose-containing material and fine material particles, wherein a material of origin for the fine material particles is coco peat and the fine material particles have a particle size of less than 0.5 mm.2. The multi-layer cardboard material according to claim 1 , wherein the portion of fine material particles in the second fibrous-material layer is 0.1 to 50% by weight related to the overall weight of the second fibrous-material layer.3. The multi-layer cardboard material according to claim 1 , wherein the length-to-width ratio of more than 50% of the fine material particles is 0.7:1 to 1:0.7.4. The multi-layer cardboard material according to wherein the first fibrous-material layer is formed as a cover or back layer of the cardboard material.5. The multi-layer cardboard material according to claim 1 , wherein second fibrous-material layer is formed as an inlay of the cardboard material.6. The multi-layer cardboard material according to claim 1 , wherein the second fibrous- ...

METHOD FOR DECOLORIZING DYE

A novel composition for decolorizing a dye is provided. 1. A composition , comprising:a multicopper oxidase; andan iodide ion.2. The composition according to claim 1 , wherein the multicopper oxidase is a laccase.3. The composition according to claim 1 , wherein the multicopper oxidase is a laccase derived from alpha-proteobacteria.4. The composition claim 1 , wherein the dye is an organic dye having a chromophore selected from the group consisting of >C═C< claim 1 , >C═O claim 1 , >C═N— claim 1 , —N═N— claim 1 , —N—O— claim 1 , and —NO.5. A method for decolorizing a dye claim 1 , comprising adding a composition comprising a multicopper oxidase and an iodide ion to a dye.6. The method according to claim 5 , wherein the multicopper oxidase is a laccase.7. The method according to claim 5 , wherein the multicopper oxidase is a laccase derived from alpha-proteobacteria.8. The method according to claim 5 , wherein the dye is an organic dye having a chromophore selected from the group consisting of >C═C< claim 5 , >C═O claim 5 , >C═N— claim 5 , —N═N— claim 5 , —N—O— claim 5 , and —NO.9. A decolorization composition claim 5 , comprising:a multicopper oxidase;an iodide ion; anda dye.10. The decolorization composition according to claim 9 , wherein the multicopper oxidase is a laccase.11. The decolorization composition according to claim 9 , wherein the multicopper oxidase is a laccase derived from alpha-proteobacteria.12. The decolorization composition according to claim 9 , wherein the dye is an organic dye having a chromophore selected from the group consisting of >C═C< claim 9 , >C═O claim 9 , >C═N— claim 9 , —N═N— claim 9 , —N—O— claim 9 , and —NO. The present invention relates to a method for decolorizing various dyes and a composition used therefor.Most of various printed matters, fibers, and other products have been colored using a dye. In order to recycle or dispose of these products, it is necessary to decolorize dyes thereof. In addition, decolorization is ...

SYSTEM AND METHOD FOR MILL EFFLUENT BIOLOGICAL OXYGEN DEMAND (BOD) REDUCTION

A system and method of forming a molded pulp product that involves separately collecting, from a paper-making process, waste water containing short fibers at a first fiber consistency, waste water as dilution water containing fibers at a second fiber consistency that is lower than the first fiber consistency, and water containing long fibers, the long fibers having a length that is greater than a length of the short fibers, blending the waste water containing short fibers and the water containing long fibers to obtain a pulp slurry, and molding the pulp slurry into a molded pulp product at a pulp molding machine. In an embodiment, filtrate removed during the molding of the molded pulp product has a BOD measurement that is 95% less than a BOD measurement of the pulp slurry, where the BOD measurements are obtained using the EPA 405.1, SM5210B Test Method. 1. A molded pulp product , comprising:short fibers at a first fiber consistency, the short fibers obtained from waste water of a paper-making process; andlong fibers having a length that is greater than a length of the short fibers, the long fibers obtained from water of the paper-making process that is separately collected from the waste water from which the short fibers are obtained,the molded pulp product being formed from a pulp slurry obtained by blending the waste water containing short fibers and the water containing long fibers.2. The molded pulp product of claim 1 , wherein filtrate removed during molding of the molded pulp product has a BOD measurement that is 95% less than a BOD measurement of the pulp slurry claim 1 , wherein the BOD measurements are obtained using the EPA 405.1 claim 1 , SM5210B Test Method.3. The molded pulp product of claim 1 , wherein the waste water containing short fibers has a fiber consistency in the range between 1.0% and 5.0%.4. The molded pulp product of claim 1 , wherein the long fibers have a length greater than 1.5 mm Lw as measured using a Fiber Quality Analyzer.5. The ...

PROCESSING APPARATUS, SHEET MANUFACTURING APPARATUS, AND PROCESSING METHOD

A processing apparatus includes a deinking material supply portion that supplies a deinking material to defibrated fibers, and an agitating portion that agitates a mixture of the deinking material and the fibers. The agitating portion includes a chamber and a rotary blade that rotates in the chamber. 1. A processing apparatus comprising:a deinking material supply portion that supplies a deinking material to defibrated fibers; andan agitating portion that agitates a mixture of the deinking material and the fibers.2. The processing apparatus according to claim 1 ,wherein the agitating portion includes a chamber and a rotary blade that rotates in the chamber.3. The processing apparatus according to claim 2 ,wherein the rotary blade includes a plurality of radially extending blades arranged circumferentially around a rotation axis of the rotary blade.4. The processing apparatus according to claim 2 , further comprising:a second rotary blade that rotates in the chamber around the same axis as the rotary blade.5. The processing apparatus according to claim 2 , further comprising:an adjusting unit that adjusts a volume of an agitating space within the chamber.6. The processing apparatus according to claim 5 ,wherein the adjusting unit includes a movable partition wall that selectively partitions the agitating space.7. The processing apparatus according to claim 6 ,wherein the partition wall includes a ventilation port.8. The processing apparatus according to claim 1 , a cylindrical body that has teeth formed on an inner periphery thereof; and', 'a rotating body that rotates inboard of the teeth and has teeth formed on an outer periphery thereof., 'wherein the agitating portion includes9. The processing apparatus according to claim 1 , further comprising:a separating portion that separates the deinking material from the mixed deinking material and the fibers.10. A sheet manufacturing apparatus comprising:a defibrating portion that defibrates a fiber-containing material; and ...

PROCESSING APPARATUS, SHEET MANUFACTURING APPARATUS, PROCESSING METHOD, AND SHEET MANUFACTURING METHOD

A processing apparatus includes a powder material supply portion that supplies a powder material containing a first particle group consisting of a plurality of first particles, and a second particle group consisting of a plurality of second particles and having an average particle diameter larger than that of the first particle group, to a fiber-containing material containing a fiber during or after defibrating, and a powder material removing portion that removes at least a portion of the powder material from the fiber-containing material supplied with the powder material. It is preferable that the processing apparatus include a defibrating portion that defibrates the fiber-containing material on an upstream side of the powder material supply portion. 1. A processing apparatus comprising:a powder material supply portion that supplies a powder material containing a first particle group consisting of a plurality of first particles, and a second particle group consisting of a plurality of second particles and having an average particle diameter larger than that of the first particle group, to a fiber-containing material containing a fiber during or after defibrating; anda powder material removing portion that removes at least a portion of the powder material from the fiber-containing material supplied with the powder material.2. The processing apparatus according to claim 1 , further comprising:a defibrating portion that defibrates the fiber-containing material on an upstream side of the powder material supply portion.3. The processing apparatus according to claim 1 ,wherein an average particle diameter of the second particle group is 2 times or more and 10,000 times or less an average particle diameter of the first particle group.4. The processing apparatus according to claim 1 ,wherein an average particle diameter of the first particle group is 0.01 μm or more and 10 μm or less, andan average particle diameter of the second particle group is 5 μm or more and 1500 μm ...

REPULPABLE SILICONE RELEASE LINER PAPER WITH DISSOLVABLE LAYER

A method of producing and repulping paper having a silicone release liner includes producing paper having a silicone release liner that is initially secured to the paper by a dissolvable material. During production of the paper, a water-soluble coating may be applied to a paper surface, and a silicone release coating is then applied to the water-soluble coating. Upon rewetting of the paper during repulping, the water-soluble coating dissolves, thereby enabling separation of the silicone release coating from the paper. The repulpable silicone release liner permits recovery of paper fibers using conventional repulping and recycling processes. 1. A method of making repulpable paper , the method comprising:coating at least a portion of a sheet of paper with a water-soluble material;coating at least a portion of the water-soluble material with a silicone material to form a silicone release paper.2. The method of claim 1 , including:providing label stock having adhesive on at least one side thereof; andreleasably adhering the label stock to the silicone release paper by bringing the adhesive into contact with the silicone material.3. The method of claim 1 , wherein:the silicone material initially comprises a silicone polymer, a crosslinker, and a catalyst.4. The method of claim 1 , wherein:the silicone material is selected from the group consisting of solvent-based silicone, water-based silicone, and solvent-less silicone.5. The method of claim 1 , wherein:the water-soluble material comprises at least one of sodium alginate and partially hydrolyzed polyvinyl alcohol.6. The method of claim 1 , wherein:the water-soluble material comprises a water soluble polymer.7. The method of claim 6 , wherein:the water soluble polymer is selected from the group consisting of carboxymethylated cellulose, ethylated starch, and carboxylated soy protein.8. The method of claim 1 , wherein:the water soluble material forms a coating having a coat weight of about 2.0-6.0 gsm.9. The method of ...

FIBER PROCESSING SYSTEM AND FIBER PROCESSING METHOD

A sheet manufacturing system includes a processing section configured to process a raw material including a fiber, a detection section configured to detect a state of the raw material, a determination section configured to determine, based on a detection result of the detection section and a preset criterion of a raw material state, whether the raw material is suitable for processing in the processing section, a supply section configured to supply, to the processing section, the raw material determined to be suitable for the processing by the determination section, a reception section configured to acquire operation information indicating an occurrence state of an operation hindrance in the processing section, and a setting section configured to set the criterion based on the operation information. 1. A fiber processing system comprising:a processing section configured to process a raw material including a fiber;a detection section configured to detect a state of the raw material;a determination section configured to determine, based on a detection result of the detection section and a preset criterion of a raw material state, whether the raw material is suitable for processing in the processing section;a supply section configured to supply, to the processing section, the raw material determined to be suitable for the processing by the determination section;an acquisition section configured to acquire operation information indicating an occurrence state of an operation hindrance in the processing section; anda setting section configured to set the criterion based on the operation information.2. The fiber processing system according to claim 1 , whereinthe setting section includesa learning data generation section that generates a learning data set including the criterion and the operation information associated with the criterion; anda learning section that learns, based on the learning data set, correlation between the criterion and the operation information, ...

PROCESS FOR MANUFACTURING RECYCLED PULP FROM USED SANITARY GOODS

Provided is a process for recovering pulp fiber from used sanitary goods which contain both pulp fiber and a superabsorbent polymer and producing a recycled pulp which contains little ash and which is reusable for sanitary goods. This process comprises: a calcium treatment step for treating used sanitary goods with a water-soluble calcium compound and thereby conducting the dehydration of a superabsorbent polymer contained in the used sanitary goods; a disintegration step for applying a physical force to the used sanitary goods to disintegrate the used sanitary goods into pulp fiber and other materials; a separation step for separating the pulp fiber from a pulp fiber/other materials mixture which has been formed in the disintegration step; a disinfecting step using a disinfectant; and a citric acid treatment step for subjecting the separated pulp fiber to treatment with an aqueous citric acid solution at an acidic pH. 1. Recycled pulp , whereinthe recycled pulp has an ash content of less than 4.0% by mass, and exhibits a water absorption factor of 7.0 g/g or more, andthe recycled pulp is recovered from used sanitary goods containing pulp fiber and a superabsorbent polymer, and is reusable for sanitary goods.2. Recycled pulp according to claim 1 , wherein the recycled pulp exhibits a pH of 3 to 6 as a solution of 10 g of recycled pulp added to and impregnated with 100 mL of ion-exchanged water.3. Recycle pulp according to claim 1 , wherein the recycled pulp exhibits a recovery of the water absorption factor of 95% or more with respect to a virgin pulp.4. Recycle pulp according to claim 2 , wherein the recycled pulp exhibits a recovery of the water absorption factor of 95% or more with respect to a virgin pulp.5. Recycle pulp according to claim 1 , wherein the recycled pulp has a moisture content of 5 to 13% by mass after drying.6. Recycled pulp according to claim 1 , wherein the recycled pulp is usable in at least one from among absorbent bodies claim 1 , tissues ...

FIBER PROCESSING DEVICE, FIBROUS FEEDSTOCK RECYCLING DEVICE, AND CONTROL METHOD OF A FIBER PROCESSING DEVICE

Variation in the thickness of accumulated material is suppressed when material containing fiber is dispersed by the sieve and accumulated. A sheet manufacturing apparatus includes a drum that sieves defibrated material containing fiber, a first web former that accumulates first screened material discharged from the drum, and a processor that processes a first web accumulated in the first web former. During processing by the processor, the mesh belt operates at a first speed. When operation starts with the drum not operating, a startup operation including the mesh belt operating at a higher speed than the first speed in a first period after the drum starts is executed. 1. A fiber processing device comprising:a sieve configured to screen material containing fiber;an accumulator configured to accumulate the material discharged from the sieve; anda processor configured to process the material accumulated on the accumulator,the fiber processing device operating the accumulator at a first speed during processing by the processor, andwhen starting from a state in which the sieve is stopped, the fiber processing device executing a startup operation including a state in which the accumulator operates at a higher speed than the first speed in a first period after the sieve starts.2. The fiber processing device described in claim 1 , whereinin the first period, the accumulator maintains a state of operating at a higher speed than the first speed.3. The fiber processing device described in claim 1 , whereinthe accumulator has a receiver on which the material can accumulate in a sheet, and the receiver moves on a circulating path.4. The fiber processing device described in claim 2 , whereinduring processing by the processor, the receiver operates at the first speed, and in the first period the operating speed of the receiver is maintained at a second speed greater than the first speed.5. The fiber processing device described in claim 2 , whereinwhen starting from a state in ...

METHOD FOR MANUFACTURING RECYCLED PULP FROM USED SANITARY PRODUCTS

A recycled pulp that is reusable sanitary products is efficiently manufactured by recovering pulp fiber from used sanitary products containing the pulp fiber and a polymer absorbent. The method of the present invention comprises: a step applying a mechanical force to the used sanitary products in an aqueous solution containing a polyvalent metal ion or an acidic aqueous solution with a pH of 2.5 or lower and thus degrading the used sanitary products into the pulp fiber and other materials; a step separating the pulp fiber from the mixture of the pulp fiber and other materials that has been formed in the degradation step; and a step treating the pulp fiber thus separated with an ozone-containing aqueous solution with a pH of 2.5 or lower. 1. A method of processing a used sanitary product , the method comprising:degrading the used sanitary product in an acid solution having a pH of 2.5 or lower, wherein the used sanitary product includes pulp fibers and a superabsorbent polymer; andapplying a mechanical force to the used sanitary product during the degrading.2. The method of claim 1 , wherein the acid solution comprises an organic acid.3. The method of claim 2 , wherein the organic acid is selected from the group consisting of tartaric acid claim 2 , glycolic acid claim 2 , malic acid claim 2 , citric acid claim 2 , succinic acid and acetic acid.4. The method of claim 2 , wherein the organic acid is citric acid.5. The method of claim 1 , further comprising separating pulp fibers and pulp fibers in which superabsorbent polymers remain from the mixture formed in the degrading step to obtain separated pulp fibers.6. The method of claim 5 , further comprising treating the separated pulp fibers in an ozone-containing solution.7. The method of claim 6 , wherein the ozone-containing solution comprises an acid.8. The method of claim 1 , wherein the used sanitary product includes organic waste.9. A method of making a sanitary product claim 1 , the method comprising:degrading a ...

PROCESS FOR MANUFACTURING RECYCLED PULP FROM USED SANITARY GOODS

Provided is a process for recovering pulp fiber from used sanitary goods which contain both pulp fiber and a superabsorbent polymer and producing a recycled pulp which contains little ash and which is reusable for sanitary goods. This process comprises: a calcium treatment step for treating used sanitary goods with a water-soluble calcium compound and thereby conducting the dehydration of a superabsorbent polymer contained in the used sanitary goods; a disintegration step for applying a physical force to the used sanitary goods to disintegrate the used sanitary goods into pulp fiber and other materials; a separation step for separating the pulp fiber from a pulp fiber/other materials mixture which has been formed in the disintegration step; a disinfecting step using a disinfectant; and a citric acid treatment step for subjecting the separated pulp fiber to treatment with an aqueous citric acid solution at an acidic pH. 1. A process for manufacturing recycled pulp that is reusable for sanitary goods , by recovering pulp fiber from used sanitary goods containing pulp fiber and a superabsorbent polymer , the process comprising:a calcium treatment step in which used sanitary goods are treated with a water-soluble calcium compound to dehydrate the superabsorbent polymer in the used sanitary goods,a disintegration step in which the used sanitary goods are subjected to physical force to disintegrate the used sanitary goods into pulp fiber and other materials,a separation step in which pulp fiber is separated from a mixture of pulp fiber and other materials generated in the disintegration step,a disinfection step using a disinfectant, anda citric acid treatment step in which the separated pulp fiber is treated with an aqueous citric acid solution at an acidic pH.2. The process according to claim 1 , wherein the pH in the citric acid treatment step is in the range of 2 to 6.3. The process according to claim 1 , further comprising a rinsing step.4. Recycled pulp with an ash ...

SHEET MANUFACTURING APPARATUS AND CONTROL METHOD FOR SHEET MANUFACTURING APPARATUS

A sheet manufacturing apparatus is supplied with a raw material including fibers and manufactures a sheet by processing the supplied raw material. The sheet manufacturing apparatus includes a control unit that displays a user interface in which raw material information related to the supplied raw material, manufacturing information related to the manufactured sheet, and processing information related to processing of the sheet are displayed. 1. A sheet manufacturing apparatus that is supplied with a raw material including fibers and manufactures a sheet by processing the supplied raw material , the apparatus comprising:a control unit that displays a user interface in which raw material information related to the supplied raw material, manufacturing information related to the manufactured sheet, and processing information related to processing of the sheet are displayed.2. The sheet manufacturing apparatus according to claim 1 ,wherein the raw material information includes at least any one information of information related to an amount of the raw material supplied and consumed in a predetermined period, information related to a remaining amount of the raw material, and information related to the amount of the raw material consumed after manufacturing of the sheet based on the supplied raw material is initiated.3. The sheet manufacturing apparatus according to claim 1 ,wherein the manufacturing information includes at least any one information of information related to the number of sheets manufactured in a predetermined period and information related to the number of sheets manufactured after manufacturing of the sheet based on the supplied raw material is initiated.4. The sheet manufacturing apparatus according to claim 1 ,wherein the raw material has a paper shape.5. The sheet manufacturing apparatus according to claim 1 ,wherein the user interface is configured with a plurality of blocks corresponding to a content of displayed information, andthe raw material ...

METHOD FOR RECOVERING PULP FIBER FROM USED SANITARY PRODUCT AND RECYCLED PULP OBTAINED THEREBY

Pulp fiber containing little ash is effectively recovered from a used sanitary product containing the pulp fiber and a polymer absorbent. The method according to the present invention comprises: a step for treating the used sanitary product with an ozone-containing gas and thus decomposing and removing at least a portion of the polymer absorbent in the used sanitary product; and a step for stirring the used sanitary product, that has been treated with the ozone-containing gas, in water or an aqueous solution containing an antiseptic and thus decomposing the used sanitary product into constituents. If required, the method may further comprise a step for separating the pulp fiber from the decomposition product obtained by the decomposition step. 19-. (canceled)10: Recycled pulp having an ash content of not more than 0.8 percent by weight and a water absorption factor of not less than 12 times.11: Recycled pulp according to claim 10 , having an ash content of not more than 0.65 percent by weight.12: Recycled pulp according to claim 10 , having a moisture content of 5 to 13%.13: Recycled pulp according to claim 11 , having a moisture content of 5 to 13%.14: Recycled pulp according to claim 10 , wherein the recycled pulp is obtained by a method for recovering pulp fiber from a used sanitary product including pulp fiber and a polymer absorbent claim 10 , the method comprising the steps of:treating the used sanitary product with an ozone-containing gas to decompose and remove at least a portion of the polymer absorbent in the used sanitary product, andstirring the used sanitary product that has been treated with the ozone-containing gas, in a disinfectant-containing aqueous solution or in water to decompose the used sanitary product into its constituent elements. The present invention relates to a method for recovering pulp fiber from used sanitary products, and to recycled pulp obtained by the method. In, particular, the invention relates to a method for recovering pulp ...

Nanocellulose production co-located at a pulp and paper mill

Some variations provide a process for producing a nanocellulose material, comprising: providing a biomass feedstock comprising a bleached or unbleached pulp material; fractionating the feedstock in the presence of an acid, a solvent for lignin, and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and mechanically treating the cellulose-rich solids to form cellulose fibrils and/or cellulose crystals, thereby generating a nanocellulose material. The process is preferably co-located with, or adjacent to, a mill that generates the pulp material. There are several advantages of a bolt-on AVAP® nanocellulose plant to an existing pulp mill, as disclosed herein.

METHOD FOR PREPARING WASTE PAPER

In order for a method for preparing fibres for producing paper from a fibre-containing material, in particular from waste paper, to be improved such that shortening of the fibres separated from the fibre material is reduced to a minimum, it is proposed that the fibre-containing material is supplied in a moist state for pulping and is pulped to a dry state by continuous impact action. 1. A method for preparing and obtaining fibres for producing paper or similar from a fibre-containing material , the method including:supplying the fibre-containing material in a moist state; andpulping the fibre-containing material to a dry state by continuous impact action.2. The method according to claim 1 , wherein a consistency of the fibre-containing material is in the range of 40% to 99%.3. The method according to claim 1 , further including injecting or spraying water claim 1 , wherein humidity of the fibre-containing material claim 1 , temperature claim 1 , dust generation claim 1 , or any combination of humidity claim 1 , temperature claim 1 , or dust generation claim 1 , when the fibre-containing material is pulped is controlled by the injecting or spraying water.4. The method according to claim 1 , wherein the pulping comprises using one or more flexible impact tools.5. The method according to claim 4 , wherein the pulping takes place in a cross-flow shredder.6. The method according to claim 1 , further including separating coarse debris and fine debris during or after the pulping.7. The method according to claim 1 , further including swelling claim 1 , after the pulping claim 1 , in a swelling or agitation vat.8. The method according to claim 1 , further including adding kraft paper to the fibre-containing material claim 1 , wherein the pulping comprises pulping the kraft paper together with the fibre-containing material.9. A method of document destruction claim 1 , comprising using the method according to for the document destruction.10. The method according to claim 1 , ...

PROCESS FOR THE DEINKING OF COATED PAPER OR PAPERBOARD

A process for the deinking of a coated paper or paperboard is disclosed, the process comprises a step of providing a coating layer comprising a calcium- or magnesium-exchanged clay which is deposited on the paper or paperboard before the ink layer. In a further step said calcium- or magnesium-exchanged clay is activated and the paper is subsequently treated with water. 1. A process for the deinking of coated paper or paperboard , comprising the following steps: [ (a1) a calcium- or magnesium-exchanged clay,', '(a2) a binder,, '(a) at least one layer consisting of a coating composition comprising,'}, '(b) at least one layer having a thickness in the range from 0.1 to 10 μm comprising ink,, '(i) providing a coated paper or paperboard comprising,'} (A) carrying out step (iii) with water comprising monovalent ions selected from the group consisting of sodium, lithium, potassium, ammonium and mixtures thereof, and/or', '(B) providing in step (i) a binder (a2) that is soluble in water and comprises monovalent ions selected from the group consisting of sodium, lithium, potassium, ammonium and mixtures thereof, and/or', '(C) adding monovalent ions selected from the group consisting of sodium, lithium, potassium, ammonium and mixtures thereof in form of a salt before or during step (iii),, '(ii) activating the calcium- or magnesium-exchanged clay before or during step (iii) by,'}(iii) treating the coated paper or paperboard as provided in step (i) with water to obtain an aqueous suspension comprising at least ink, clay particles and a paper pulp or a paper residue, wherein layer (a) is deposited on the paper or paperboard before layer (b).2. The process according to claim 1 , wherein the process comprises a further step (iv) of separating the paper or paperboard from the aqueous suspension obtained in step (iii).3. The process according to or claim 1 , wherein the clay is a calcium-exchanged nanoclay selected from the group consisting of bentonite claim 1 , smectite claim 1 ...

SHEET MANUFACTURING APPARATUS AND SHEET MANUFACTURING METHOD

A sheet manufacturing apparatus includes: a defibrating unit which defibrates a raw material including at least fibers; an addition unit which adds an additive agent to a defibrated material which is defibrated in the defibrating unit; and a sheet forming unit which forms a sheet by bonding the plurality of fibers to each other via the additive agent. According to a history of the raw material, an amount of the additive agent which is fed by the addition unit varies. In addition, there is provided a sheet manufacturing method, including: defibrating the raw material which includes at least fibers; adding the additive agent to the defibrated material; and bonding the plurality of fibers to each other via the additive agent. According to the history of the raw material, a feed amount of the additive agent with respect to the raw material varies. 1. A sheet manufacturing apparatus , comprising:a defibrating unit which defibrates a raw material including at least fibers;an addition unit which adds an additive agent to a defibrated material which is defibrated in the defibrating unit; anda sheet forming unit which forms a sheet by bonding the plurality of fibers to each other via the additive agent,wherein, according to a history of the raw material, an amount of the additive agent which is fed by the addition unit varies.2. The sheet manufacturing apparatus according to claim 1 ,wherein the history is information which corresponds to the number of recycling of the raw material in the past.3. The sheet manufacturing apparatus according to claim 1 ,wherein the amount of the additive agent to be fed is decreased when the number of times a raw material has been recycled is larger relative to when the number of times a raw material has been recycled is fewer.4. The sheet manufacturing apparatus according to claim 1 , further comprising:a fiber feeding unit which feeds more fibers into the defibrated material which is defibrated in the defibrating unit,wherein an amount of ...

PROCESS AND SYSTEM FOR PRODUCING PULP, ENERGY, AND BIODERIVATIVES FROM PLANT-BASED AND RECYCLED MATERIALS

The presently disclosed subject matter relates to an industrial system for processing various plant materials to produce marketable materials. Particularly, the system integrates subcritical water extraction technology and includes a pre-processing module and a two-stage extractor (processing module) with constant control of temperature, pressure, and/or residence time. In some embodiments, the final product of the disclosed system can include feedstock constituents for biofuel production (sugars and/or oil), biochar, raw materials for various industries (such as pulp for manufacturing paper or cellulose for use in various industries). The disclosed system can be modular or non-modular, stationary or mobile, and can include prefabricated elements with programmed automatic or manual operation so that it can be easily moved and/or assembled on site. 1. (canceled)2. A system comprising:a pre-processing portion having a mechanical processor/material handler for a preparation of feedstock material; andan extractor portion comprising a reactor or a reactor assembly to which feedstock and subcritical water is supplied, the reactor or reactor assembly having:a first operating condition at a first pressure and a first temperature at a constant level that is held for a first defined period of time to break down carbohydrates of a first chain strength,wherein the reactor assembly comprises an assembly of one or more reactors followed by one or more pressure control valves, heat exchangers for cooling down the outputs from the reactor, and separators to collect valuable materials from the water phase and consequently recycle the water.3. The system of claim 2 , wherein the reactor assembly comprises continuous-type reactors or batch-type reactors.4. The system according to claim 2 , further including:a high pressure pump for increasing a pressure in the system, wherein a variable speed and flow rate are provided;a pressure control valve for maintaining pressure in the first ...

METHOD FOR PRODUCING ACID WASHED CELLULOSIC FEEDSTOCK FOR ETHANOL PRODUCTION

A method for producing acid washed wastewater cellulosic feed stock for ethanol production by injecting sulfur dioxide into waters containing cellulosic solids for agglomeration and separation producing acid hydrolyzed conditioned cellulosic materials. 1. A method for producing acid washed cellulosic feedstock from waters containing paper and/or suspended solids comprising:a. injecting sufficient sulfurous acid into the waters containing paper and suspended solids to agglomerate the paper and/or water solids, andb. separating the paper and/or water solids and allowing them to chemically dry to form an acidic biosolid, high in cellulosic content for use as a feedstock for acid hydrolysis and/or fermentation of the feedstock to produce ethanol.2. A method for producing acid washed cellulosic feedstock according to claim 1 , wherein the waters are wastewater with a pH between 1.5 and 4.5 after the addition of sulfurous acid.3. A method for producing acid washed cellulosic feedstock according to claim 2 , including adding additional cellulosic fibers from waters containing paper and/or suspended cellulosic solids.4. A method for producing acid washed cellulosic feedstock claim 1 , according to claim 1 , wherein the cellulosic feedstock is derived from feedlots claim 1 , and the sulfurous acid suppresses odors while acid hydrolyzing the cellulosic material.5. A method for producing acid washed cellulosic feedstock according to claim 1 , wherein the amount of sulfurous acid is dependent upon the buffering alkalinity and oxygen levels in the water.6. (canceled)7. A method for producing acid washed cellulosic feedstock according to claim 1 , wherein the sulfurous acid waters containing paper and/or suspended solids forms a slurry that is pH adjusted for microbial fermentation into ethanol.8. A method for producing acid washed cellulosic feedstock according to claim 7 , wherein the pH of the slurry is raised above 4.9. A method for producing acid washed cellulosic feedstock ...

SHEET MANUFACTURING APPARATUS

A sheet manufacturing apparatus includes a sheet forming portion that forms a sheet using a material including fibers, a transport portion that transports the sheet, a cutting portion that cuts one edge portion and the other edge portion of the sheet positioned in a direction intersecting a transport direction of the sheet, a first coarse crushing portion that coarsely crushes a first surplus portion generated by cutting the one edge portion by the cutting portion, and a second coarse crushing portion that coarsely crushes a second surplus portion generated by cutting the other edge portion by the cutting portion. 1. A sheet manufacturing apparatus comprising:a sheet forming device that forms a sheet using a material including fibers;a transport device that transports the sheet;a cutting device that cuts one edge portion and the other edge portion of the sheet positioned in a direction intersecting a transport direction of the sheet;a first coarse crushing device that coarsely crushes a first surplus portion generated by cutting the one edge portion by the cutting device; anda second coarse crushing device that coarsely crushes a second surplus portion generated by cutting the other edge portion by the cutting device.2. The sheet manufacturing apparatus according to claim 1 ,wherein the first coarse crushing device starts coarse crushing of the first surplus portion of which a portion is connected to the sheet, andthe second coarse crushing device starts coarse crushing of the second surplus portion of which a portion is connected to the sheet.3. The sheet manufacturing apparatus according to claim 1 ,wherein the first coarse crushing device has at least one first rotary blade for coarsely crushing the first surplus portion by rotation, andthe second coarse crushing device has at least one second rotary blade for coarsely crushing the second surplus portion by rotation.4. The sheet manufacturing apparatus according to claim 3 ,wherein the first rotary blade rotates ...

METHOD FOR RECOVERING PULP FIBER FROM USED SANITARY PRODUCT AND RECYCLED PULP OBTAINED THEREBY

Pulp fiber containing little ash is effectively recovered from a used sanitary product containing the pulp fiber and a polymer absorbent. The method according to the present invention comprises: a step for treating the used sanitary product with an ozone-containing gas and thus decomposing and removing at least a portion of the polymer absorbent in the used sanitary product; and a step for stirring the used sanitary product, that has been treated with the ozone-containing gas, in water or an aqueous solution containing an antiseptic and thus decomposing the used sanitary product into constituents. If required, the method may further comprise a step for separating the pulp fiber from the decomposition product obtained by the decomposition step. 1: A method for recovering pulp fiber from a used sanitary product including pulp fiber and a polymer absorbent , comprising the steps of:treating the used sanitary product with an ozone-containing gas to decompose and remove at least a portion of the polymer absorbent in the used sanitary product, andstirring the used sanitary product that has been treated with the ozone-containing gas, in a disinfectant-containing aqueous solution or in water to decompose the used sanitary product into its constituent elements.2: The method according to claim 1 , wherein the ozone concentration of the ozone-containing gas is 50 to 200 g/m.3: The method according to claim 1 , wherein the treatment time with the ozone-containing gas is 10 to 60 minutes.4: The method according to claim 1 , wherein the used sanitary product is treated with the ozone-containing gas to decompose and remove at least 90% of the polymer absorbent in the used sanitary product.5: The method according to claim 1 , wherein the disinfectant is sodium hypochlorite claim 1 , chlorine dioxide claim 1 , acidic electrolyzed water claim 1 , ozone water claim 1 , acidic ozone water or organic acid-containing ozone water.6: The method according to claim 1 , further comprising a ...

Sulfite pretreatment for biorefining biomass

The present invention relates to a method using sulfite pretreatment to overcome recalcitrance of lignocellulose (SPORL). More specifically, it relates to a sulfite-based chemical process for pretreating biomass in solutions to reduce access barriers of enzymes to the lignocellulose, resulting in efficient conversion through enzymatic saccharification.

METHOD FOR RECOVERING PULP FIBER FROM USED SANITARY PRODUCT AND RECYCLED PULP OBTAINED THEREBY

Pulp fiber containing little ash is effectively recovered from a used sanitary product containing the pulp fiber and a polymer absorbent. The method according to the present invention comprises: a step for treating the used sanitary product with an ozone-containing gas and thus decomposing and removing at least a portion of the polymer absorbent in the used sanitary product; and a step for stirring the used sanitary product, that has been treated with the ozone-containing gas, in water or an aqueous solution containing an antiseptic and thus decomposing the used sanitary product into constituents. If required, the method may further comprise a step for separating the pulp fiber from the decomposition product obtained by the decomposition step. 112-. (canceled)13: A method for recovering pulp fiber from a used sanitary product including pulp fiber and a polymer absorbent , comprising the step of:{'sup': '−3', 'treating the used sanitary product with an ozone-containing gas to decompose and remove at least a portion of the polymer absorbent in the used sanitary product which decomposed and removed portion of the polymer absorbent is gasified and removed as carbon dioxide, wherein a product of the ozone concentration of the ozone-containing gas and the treatment time with the ozone-containing gas is 500 to 12,000 m·g·min.'}14: The method according to claim 13 , wherein the ozone concentration of the ozone-containing gas is 50 to 200 g/m.15: The method according to claim 13 , wherein the treatment time with the ozone-containing gas is 10 to 60 minutes.16: The method according to claim 13 , wherein the used sanitary product is treated with the ozone-containing gas to decompose and remove at least 90% of the polymer absorbent in the used sanitary product.17: The method according to claim 13 , further comprising the steps of:stirring the used sanitary product that has been treated with the ozone-containing gas, in an aqueous solution or in water to decompose the used ...

METHOD FOR MANUFACTURING RECYCLED PULP FROM USED SANITARY ARTICLE

The present invention addresses the problem of efficiently manufacturing a recycled pulp from a used sanitary article, said recycled pulp being reusable for sanitary articles and having an ash content and antibacterial properties both meeting the standards for sanitary articles. A method for manufacturing a recycled pulp reusable for sanitary articles by recovering a pulp fiber from a used sanitary article that contains the pulp fiber and a high water-absorbing polymer, said method comprising an ozone treatment step for immersing the used sanitary article or pulp fiber in an ozone-containing aqueous solution and thus disintegrating the high water-absorbing polymer contained in the used sanitary article or sticking to the pulp fiber, characterized in that the used sanitary article or pulp fiber is treated with a cationic antibacterial agent before, after or together with the ozone treatment step. 1: A method for manufacturing recycled pulp able to be reused in sanitary articles by recovering pulp fiber from a used sanitary article containing pulp fiber and superabsorbent polymer; wherein , the method comprises an ozone treatment step for decomposing superabsorbent polymer present in the used sanitary article or adhered to the pulp fiber by immersing the used sanitary article or pulp fiber in an ozone-containing aqueous solution , and the used sanitary article or pulp fiber is treated with a cationic antibacterial agent either before , simultaneous to or after the ozone treatment step.2: The method according to claim 1 , comprising a decomposition step for decomposing a used sanitary article into pulp fiber and other materials by allowing physical force to act on the used sanitary article in an aqueous solution containing a polyvalent metal ion or an acidic aqueous solution having a pH of 2.5 or lower prior to the ozone treatment step.3: The method according to claim 1 , comprising a step for washing a used sanitary article and decomposing the used sanitary article ...

Methods of Making Paper and Paper with Modified Cellulose Pulps

The present invention relates to an improved process for producing chemical cellulose pulp wherein biopolymers are added immediately before, during or after a bleaching step, depending on pulp characteristics and on process conditions used. The biopolymers according to the present invention are starches chemically modified by an etherification reaction. This treatment results in a differentiated pulp having improved physical, chemical and mechanical properties when compared with cellulose pulps obtained by traditional processes. The use of said biopolymer alters the relations between important pulp properties rendering their application in papermaking process advantageous. This differentiation increases the possibilities of use and also of new applications, including for the substitution of pulps produced from other cellulose sources. Thus, the present invention also relates to methods of making paper, such as printing, writing, decorative, special or tissue-type papers, through the use of the cellulose pulps modified by the above process.

PROCESSING DEVICE, SHEET MANUFACTURING APPARATUS, PROCESSING METHOD, AND SHEET MANUFACTURING METHOD

A processing device, a sheet manufacturing apparatus, a processing method, and a sheet manufacturing method that suppress damage to a substrate when removing color material from the substrate, and are useful for recycling the substrate after color material is removed, are provided. A processing device has a color material removal device including at least one discharge nozzle configured to discharge particles containing cellulose to a substrate holding color material, and remove the color material from the substrate. The color material removal device preferably has a double-walled conduit construction having an internal conduit and an external conduit in which the internal conduit is inserted, at least one of an opening to the internal conduit and an opening to the external conduit functioning as the discharge nozzle. 1. A processing device comprising:a color material removal device having at least one discharge nozzle configured to discharge particles containing cellulose to a substrate holding color material, and remove the color material from the substrate.2. The processing device described in claim 1 , wherein:the color material removal device is a double-walled conduit construction having an internal conduit and an external conduit in which the internal conduit is inserted, at least one of an opening to the internal conduit and an opening to the external conduit functioning as the discharge nozzle.3. The processing device described in claim 2 , wherein:an opening to the internal conduit functions as the discharge nozzle; anda gas is discharged from an opening to the external conduit.4. The processing device described in claim 2 , wherein:an opening to the external conduit functions as the discharge nozzle; andthe particles are suctioned by the opening in the internal conduit.5. The processing device described in claim 2 , wherein:an opening to the internal conduit and an opening to the external conduit both function as the discharge nozzle.6. The processing ...

Processing device, sheet manufacturing device, processing method, and method for manufacturing sheet

A processing device has a fibrillation portion fibrillating fiber-containing materials containing fibers in the air, a particle supply portion supplying particles having Mohs' hardness of 2 or more and 5 or less to the fiber-containing materials during or after the fibrillating at the fibrillation portion for collision of the particles and the fiber-containing materials, and a particle removal portion removing the particles from the fiber-containing materials to which the particles are supplied.

SYSTEM AND METHOD FOR MILL EFFLUENT BIOLOGICAL OXYGEN DEMAND (BOD) REDUCTION

A system and method of forming a molded pulp product that involves separately collecting, from a paper-making process, waste water containing short fibers at a first fiber consistency, waste water as dilution water containing fibers at a second fiber consistency that is lower than the first fiber consistency, and water containing long fibers, the long fibers having a length that is greater than a length of the short fibers, blending the waste water containing short fibers and the water containing long fibers to obtain a pulp slurry, and molding the pulp slurry into a molded pulp product at a pulp molding machine. In an embodiment, filtrate removed during the molding of the molded pulp product has a BOD measurement that is 95% less than a BOD measurement of the pulp slurry, where the BOD measurements are obtained using the EPA 405.1, SM5210B Test Method. 1. A method of forming a molded pulp product , comprising:separately collecting, from a paper-making process, waste water containing short fibers at a first fiber consistency, waste water as dilution water containing fibers at a second fiber consistency that is lower than the first fiber consistency, and water containing long fibers, the long fibers having a length that is greater than a length of the short fibers;blending the waste water containing short fibers and the water containing long fibers to obtain a pulp slurry; andmolding the pulp slurry into a molded pulp product at a pulp molding machine,wherein filtrate removed during the molding of the molded pulp product has a BOD measurement that is 95% less than a BOD measurement of the pulp slurry, wherein the BOD measurements are obtained using the EPA 405.1, SM5210B Test Method.2. The method of claim 1 , wherein the waste water containing short fibers has a fiber consistency in the range of 1.0% and 5.0%.3. The method of claim 1 , wherein the dilution water has a fiber consistency below 0.5%.4. The method of claim 1 , wherein the long fibers have a length ...

Disperser plates with intermeshing teeth and outer refining section

A disperser-refiner plate segment comprising a refining section disposed radially outward from a dispersion section, wherein a height of the teeth in the dispersion section exceeds a height of the bars in the refining section. It is believed that disperser-refiner plate segments as described herein will allow operators to combine dispersion with refining and give operators greater control over the level of dispersion while minimally affecting the level of refining.

SHEET MANUFACTURING APPARATUS

A sheet manufacturing apparatus can determine if the sheets supplied as feedstock have already been recycled. The sheet manufacturing apparatus has a supply unit configured to supply feedstock; a defibrating unit configured to defibrate the feedstock; an depositing unit configured to deposit defibrated material defibrated by the defibrating unit; a forming unit configured to form a sheet from a web laid by the depositing unit; a marking unit configured to apply a mark to at least one of the web and the sheet; and a reading unit configured to read the mark imparted to the feedstock when a sheet having mark imparted thereto is supplied as the feedstock. 1. A sheet manufacturing apparatus comprising:a forming drum into which fiber and resin are loaded, the forming drum being rotationally driven and the forming drum having a hole from which a mixture of the fiber and the resin is passed through;a belt being disposed under the forming drum, the mixture being deposited on the belt;a roller having an uneven surface, the roller applying pressure on the mixture so that a mark is formed; anda cutter which cuts a web at a specific length so as to provide a sheet.2. The sheet manufacturing apparatus according to claim 1 , wherein the resin is a fusion bonding resin.3. The sheet manufacturing apparatus according to claim 1 , wherein the belt is a mesh belt.4. The sheet manufacturing apparatus according to claim 1 , further comprising a suction device claim 1 , wherein the mixture is deposited on the belt by the suction power of the suction device.5. A sheet manufacturing method comprising:rotationally driving a forming drum into which fiber and resin is loaded and the fiber and the resin are mixed;passing the mixture of the fiber and the resin through a hole of the forming drum;deposition process wherein the mixture is deposited on a belt;applying pressure on the mixture by a roller which has an uneven surface and forming a mark on the mixture; andcutting the mixture at a ...

Recycled pulp fiber manufacturing method

The purpose of the present invention is to provide a recycled pulp fiber manufacturing method with which it is possible to easily obtain recycled pulp fibers containing less of a high water-absorption polymer without requiring any mechanical equipment such as an ozone generation apparatus. This method is for manufacturing recycled pulp fibers from used sanitary goods including pulp fibers and a high water-absorption polymer, and is characterized by comprising: an inactivation step (S 1 ) for immersing a sanitary goods constituent material in an acid-containing aqueous solution so as to inactivate the high water-absorption polymer; a high water-absorption polymer degradation step (S 3 ) for generating chlorine dioxide by adding a chlorine dioxide generating material, which is capable of generating chlorine dioxide through reaction with an acid, to the acid-containing aqueous solution that has undergone the inactivation step (S 1 ), and then degrading the inactivated high water-absorption polymer using said chlorine dioxide; and a recycled pulp fiber recovery step (S 4 ) for recovering the recycled pulp fibers from the acid-containing aqueous solution that has undergone the high water-absorption polymer degradation step (S 3 ).

ENZYMATIC PRE-TREATMENT OF MARKET PULP TO IMPROVE FIBER DRAINAGE AND PHYSICAL PROPERTIES

Methods for reducing the effects of wetlapping, drying, and hornification of pulp fibers and consequently increasing the pulp drainage and strength properties in the final product (i.e., paper) are provided. The method which has been developed creates a “value-added” product by the wastepaper supplier or at the pulp and/or deinking (recycled paper) mill—a wastepaper load/bale, wet pulp stock or wet lap, or dried pulp treated with or impregnated with enzymes that enhance the quality of the pulp or paper product when it is repulped and processed at the paper mill. 1. A method of modifying pulp properties comprisingadministering an effective amount of enzyme formulation to pulp (1) after dewatering and drying of the pulp into dried pulp, wetlap pulp, or pulp in the form of market pulp sheets, bales of market pulp sheets, or dried crumbled pulp and (2) prior to subsequent repulping for the manufacturing of paper products,wherein the administered enzyme formulation is effective (1) to increase pulp drainage characteristics of the treated pulp when repulped, (2) to improve strength when sheets are made from the treated pulp, or (3) both, andwherein the enzyme formulation has at least one enzyme activity selected from the group consisting of cellulase activity, pectinase activity, endo-glucanase activity, cellbiohydrolase activity, hemicellulase activity, mannanase activity, xylanase activity, gamanase activity, pectin lyase activity, pectate lyase activity, lipase activity, and laccase activity.2. The method of claim 1 , wherein the pulp is recycled paper pulp.3. The method of claim 1 , wherein the pulp is virgin pulp.4. The method of claim 1 , wherein the enzyme formulation is administered at a virgin pulp mill or a wastepaper recycling plant.5. The method of claim 4 , wherein the enzyme formulation is administered at the virgin or recycling pulp plant to wet lap pulp.6. The method of claim 4 , wherein the enzyme formulation is administered at the virgin or recycling ...

ENZYMATIC PRE-TREATMENT OF MARKET PULP TO IMPROVE FIBER DRAINAGE AND PHYSICAL PROPERTIES

Methods for reducing the effects of wetlapping, drying, and hornification of pulp fibers and consequently increasing the pulp drainage and strength properties in the final product (i.e., paper) are provided. The method which has been developed creates a “value-added” product by the wastepaper supplier or at the pulp and/or deinking (recycled paper) mill—a wastepaper load/bale, wet pulp stock or wet lap, or dried pulp treated with or impregnated with enzymes that enhance the quality of the pulp or paper product when it is repulped and processed at the paper mill. 1. Enzyme treated pulp selected from the group consisting of dried pulp , wetlap pulp , or pulp in the form of market pulp sheets , bales of market pulp sheets , and dried crumbled pulp , wherein the treated pulp , when compared to pulp not treated with enzyme , (1) has increased pulp drainage characteristics when repulped , (2) produces sheets having improved strength when sheets are made from the repulped treated pulp , or (3) both ,wherein the treated pulp was enzyme treated by administering an effective amount of enzyme formulation to pulp (1) after dewatering and drying of the pulp into dried pulp, wetlap pulp, or pulp in the form of market pulp sheets, bales of market pulp sheets, or dried crumbled pulp and (2) prior to subsequent repulping for the manufacturing of paper products,wherein the administered enzyme formulation is effective (1) to increase pulp drainage characteristics of the treated pulp when repulped, (2) to improve strength when sheets are made from the treated pulp, or (3) both, andwherein the enzyme formulation has at least one enzyme activity selected from the group consisting of cellulase activity, pectinase activity, endo-glucanase activity, cellbiohydrolase activity, hemicellulase activity, mannanase activity, xylanase activity, gamanase activity, pectin lyase activity, pectate lyase activity, lipase activity, and laccase activity.2. The treated pulp of claim 1 , wherein the pulp ...

NOVEL CELLULASE GENE

An object is to identify endoglucanase and β-glucosidase genes by isolating genomic DNA containing cellulase genes, which are classified into endoglucanases or β-glucosidases, from , and sequencing the nucleotide sequences thereof. The inventors intensively compared the amino acid sequences of known endoglucanases and β-glucosidases with each other to find conserved region of amino acid sequences in , and various primers were designed based on the information. PCR was carried out using the various primers thus designed and genomic DNA or cDNA as a template. As a result, gene fragments of endoglucanases and β-glucosidases were obtained. Primers were designed based on the gene fragments, and PCR was carried out to amplify nine genes of endoglucanases and β-glucosidases. The nucleotide sequences thereof were sequenced, and the present invention was completed. 1. A protein comprising an amino acid sequence having at least 90% identity with amino acids 1-376 of SEQ ID NO: 8 , and containing at least one substitution modification relative to amino acids 1-376 of SEQ ID NO: 8.2. A polynucleotide comprising a nucleotide sequence encoding the protein according to claim 1 , or a nucleotide sequence that encodes a protein comprising amino acids 1-376 of SEQ ID NO: 8 claim 1 , but which is not the nucleotide sequence of SEQ ID NO: 7.3. A DNA encoding the protein according to .4. A DNA wherein an intron sequence is removed from a DNA selected from:(i) a DNA comprising nucleotides 70-1376 of SEQ ID NO: 7; or(ii) a DNA hybridizing under stringent conditions to a DNA consisting nucleotides 70-1376 of SEQ ID NO: 7, and encoding a protein having endoglucanase activity.5. The DNA according to claim 4 , wherein the intron sequence comprises one or more sequences selected from nucleotides 451-500 or 765-830 of SEQ ID NO: 7.6. A DNA wherein a nucleotide sequence encoding a signal sequence is removed from a DNA selected from:(i) a DNA comprising nucleotides 70-1376 of SEQ ID NO: 7; or(ii) ...

Integrated method and system for recycling waste material

Integrated methods and systems for recycling waste material including waste paper are provided, the methods including treating the waste material in the pressure vessel at an elevated processing temperature and an elevated processing pressure to form a treated waste material including a substantially re-pulped waste paper; discharging the treated waste material from the pressure vessel; and thereafter separating and diluting the treated waste material to dilute a portion including the substantially re-pulped waste paper to from about 1% to about 20% by weight solids. The recovered paper pulp fraction and substantially fiber-free recoverable/recyclable plastics and metals may be further separated and used as feedstock in a variety of subsequent processes.

SHEET MANUFACTURING APPARATUS

A sheet manufacturing apparatus can determine if the sheets supplied as feedstock have already been recycled. The sheet manufacturing apparatus has a supply unit configured to supply feedstock; a defibrating unit configured to defibrate the feedstock; an depositing unit configured to deposit defibrated material defibrated by the defibrating unit; a forming unit configured to form a sheet from a web laid by the depositing unit; a marking unit configured to apply a mark to at least one of the web and the sheet; and a reading unit configured to read the mark imparted to the feedstock when a sheet having mark imparted thereto is supplied as the feedstock. 1. A sheet comprising:fiber and resin,wherein the resin is a fusion bonding resin, and the fibers are bound to each other by being melted the fusion bonding resin,wherein a marking indicating that the sheet has been defibrated is applied to the sheet.2. The sheet according to claim 1 , wherein the marking is concave or convex embossment on the surface of the sheet.3. The sheet according to claim 1 , wherein the marking is a marking formed by partially different density of the fibers constituting the sheet.4. The sheet according to claim 1 , wherein the marking is a hole formed in the sheet.5. The sheet according to claim 1 , wherein the marking is invisible ink applied to the sheet. This application is a continuation of U.S. application Ser. No. 15/652,543, filed Jul. 18, 2017, which is a continuation of U.S. application Ser. No. 15/126,612, filed Sep. 16, 2016, which issued as Pat. No. 9,738,996 on Aug. 22, 2017, which is a 371 of PCT/JP2015/001513, filed Mar. 18, 2015 and claims priority to Japanese Application No. 2014/247689, filed Dec. 8, 2014, and Japanese Application No. 2014/061391, filed Mar. 25, 2014, the entireties of which are incorporated by reference herein.The present invention relates to a sheet manufacturing apparatus.A paper recycling system having a dry defibrating unit that shreds and defibrates ...