Способ очистки загрязненного полиэтилена

В изобретении описан способ очистки регенерированного полиэтилена, например полиэтилена, регенерированного после бытового использования или после промышленного использования. Способ включает получение регенерированного полиэтилена и приведение его в контакт с первым жидким растворителем при повышенной температуре и давлении с получением экстрагированного регенерированного полиэтилена. Экстрагированный регенерированный полиэтилен растворяют в растворителе, выбранном из группы, состоящей из первого жидкого растворителя, второго жидкого растворителя или их смесей при повышенной температуре и давлении. Получают раствор полиэтилена и осуществляют очистку при повышенной температуре и давлении посредством контакта раствора полиэтилена с твердой средой, чтобы получить более чистый раствор полиэтилена. Затем от более чистого раствора полиэтилена отделяют более чистый полиэтилен. Первый и второй жидкие растворители имеют тот же или другой химический состав и выбирают из группы, состоящей из алифатических ...

Verfahren zur Entsorgung eines mit Metallen beaufschlagten Kunststoffteiles

Anlage zum Umwandeln von Abfällen in Rohstoffe

Recycling hydrocarbon-contaminated plastics, e.g. polyethylene for production of car screen-wash containers, involves high-pressure extraction of hydrocarbon with supercritical gas, e.g. carbon dioxide

A method for recycling plastics which are contaminated with hydrocarbons involves extracting the hydrocarbons with liquefied or compressed gas in a high-pressure extractor to give the purified plastic, separating the gas from the hydrocarbons and optionally recycling the gas to the extractor. A high-pressure extraction process for the production of recycled plastics from waste plastics contaminated with hydrocarbons involves (a) optional milling, (b) extraction of hydrocarbons with a liquefied or compressed gas in an extractor to give the purified recycled plastic, (c) separation of the hydrocarbon-containing gas into hydrocarbon and pure gas in a separator and (d) optional recycling of the gas to the extractor.

Improvements in and relating to the Removal of the Fabric or like Support from Automobile Tyre Covers and like articles of Vulcanised Indiarubber, and in Recovering India Rubber therefrom.

... 16,116. Debauge, H. July 12, 1913, [Convention date]. Coatings, removing from coated fabrics.- Tyre covers and like fabrics are soaked in a rubber solvent such as xylol until the rubber has become brittle and friable. The layers of fabric are then pulled apart and the rubber cement clinging to them is brushed off by the machine shown. The brushing-apparatus consists of revolving wire brushes a to which the fabric is fed at a lower speed by toothed rollers b. The rubber particles fall into a receptacle d and the brushed fabric leaves at o, being detached from the teeth by springs r. A current of air to carry off the solvent may pass through the opening e.

Method for the selective recovery of constituent materials from insulated-electrical-cable wastes

Waste from insulated electrical cables, including metal conductors and plasticized polymeric material consisting at least in part of plasticized polyvinyl halides is treated with a solvent to extract selectively the plasticizers in the polymeric material. The solution containing the extracted plasticizer is separated from the solid waste material and fed to a distillation plant. The deplasticized polymeric material is then subjected to cold crushing. The method is particularly advantageous in connection with the recovery of waste in which the plasticized polyvinyl halides are mixed with olefin polymers. The removal of the plasticizers permits the selective cold crushing of the polyvinyl halides and their recovery and also permits the crushing to take place at a temperature only slightly below 0 DEG C instead of about -45 DEG C with consequent saving in cost.

METHOD OF DEGRADING RUBBER TO PRODUCE USEFUL MATERIALS

... 1384555 Carbon recovery COAL INDUSTRY (PATENTS) Ltd 1 Dec 1972 [20 Dec 1971] 58988/71 Heading C1A [Also in Division C3] The reinforcing carbon black contained in rubber products, e.g. tyres, is recovered by a process in which the rubber is contacted with a solvent selected from water and organic solvents having a critical temperature of 150‹ to 450‹ C., which solvent is in the gaseous phase, at a temperature above the critical temperature thereof, thereby degrading the rubber and dissolving at least part of the degradation products thereof in the gaseous phase and removing the gaseous phase from the solid, carbon-containing residue of the rubber. At least part of the degradation products of the rubber dissolved in the gaseous phase are condensed therefrom.

PROCEDURE FOR THE RECYCLING OF POLYESTERS OR POLYESTER MIXTURES FROM POLYESTERHALTIGEN WASTES

PROCEDURE FOR THE SEPARATION AND RECUPERATION OF GOAL POLYMERS AND THEIR ADDITIVES FROM A POLYMERHALTIGEN MATERIAL AS WELL AS ITS USE

RECYCLING OF PRINTED CIRCUIT BOARDS

REACTOR FOR THE SEPARATION OF ALUMINUM FROM MULTI-LAYER FOIL MATERIALS

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.

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 FOR SEPARATING FROM ALUMINUM FOILS FROM PE FOILS OR PLASTIC FOILS ON BASIS FROM POLYESTER

PROCESSING OF COMPACT DISCS

PROCEDURE FOR THE RECYCLING OF COATED PLASTIC MOLDED ARTICLES

PROCEDURE FOR THE RECOVERY OF SOLUBLE POLYMERS OR POLYMER MIXTURES FROM KUNSTSTOFFHALTIGEN MATERIALS

PROCEDURE FOR THE RE-USE OF ARTICLES FROM POLYVINYL CHLORIDE

Multilayer packaging material incorporating a layer of post-consumer, commingled plastics

METHOD OF RECLAIMING CROSSLINKED RUBBER AND MOLDING OF RECLAIMED RUBBER

A method of crosslinked-rubber reclamation which is less apt to cause a quality deterioration by the generation of a decomposition product. The method comprises: incorporating a degassing carrier into a crosslinked rubber (10) in a reclamation step in which a shear force is applied to the crosslinked rubber (10) to reclaim it and/or in a later step; and removing the degassing carrier together with a decomposition product which has generated in the crosslinked rubber (10). The molded article is produced by crosslinking again the reclaimed rubber thus-obtained.

METHOD AND DEVICE FOR RECYCLING ROPES

Procédé pour recycler des cordages composites, le procédé comprenant une étape d'identification (S0) du type de cordage, et au moins une étape de séparation de composants comprenant l'une ou l'autre des étapes suivantes /S1/,/S2/,/S3/,/S4/ telles que définies ci-après : /S1/ - une étape de séparation mécanique, /S2/ - une étape de séparation chimique, /S3/ - une étape de séparation thermique, /S4/ - une étape de séparation biologique et machine ou installation pour recycler des cordages composites.

MOLDED ARTICLE, CONTAINER AND A METHOD FOR THE MOLDING AND RECYCLING THEREOF

Disclosed herein, amongst other things, is a molded article, such as a preform that is blow moldable to form a container, and a related method of forming and recycling a container. The structure and steps includes injection molding a molded article having tubular body.

METHOD FOR PURIFYING RECLAIMED POLYMERS

A method for purifying a reclaimed polymer is disclosed. In one embodiment, the method involves obtaining reclaimed polymer, contacting the reclaimed polymer with a first fluid solvent to produce an extracted reclaimed polymer; then dissolving the extracted reclaimed polymer in a solvent to produce a first solution comprising polymer. The first solution is settled and then filtered. A purer polymer is separated from the resulting solution.

METHOD FOR PURIFYING RECLAIMED POLYETHYLENE

A method for purifying a reclaimed polyethylene is disclosed. In one embodiment, the method involves obtaining reclaimed polyethylene, contacting the reclaimed polyethylene with a first fluid solvent to produce an extracted reclaimed polyethylene; then dissolving the extracted reclaimed polyethylene in a solvent to produce a first solution comprising polyethylene. The first solution is settled and then filtered. A purer polyethylene is separated from the resulting solution.

EXTRUDER, FACILITY COMPRISING AN EXTRUDER, AND METHOD FOR PRODUCING TARGET POLYMER PRODUCTS CONSISTING OF A PLASTIC-CONTAINING MATERIAL FROM A SOLUTION USING SUCH AN EXTRUDER

The invention relates to an extruder (30) comprising a housing (31), a first material inlet (32) for a mixture (46) at least consisting of a solvent and a dissolved medium, a material outlet (33), a screw (35), a screw drive (34), and at least one distillation region (36a-d) between the inlet (32) and the outlet (33), which allows an outflow of solvent, and a discharge line (43-45) for the solvent.

PROCESSES FOR RECYCLING POLYSTYRENE WASTE

There are provided processes for recycling polystyrene waste. The processes can comprise dissolving said polystyrene waste in ethylbenzene under conditions to obtain a polystyrene/ethylbenzene mixture, adding the polystyrene/ethylbenzene mixture to a hydrocarbon polystyrene non-solvent under conditions to obtain precipitated polystyrene and washing the precipitated polystyrene with additional portions of hydrocarbon polystyrene non-solvent under conditions to obtain twice-washed polystyrene. The twice-washed polystyrene can optionally be dried and formed into polystyrene pellets. There is also provided recycled polystyrene obtained from such processes for recycling polystyrene waste.

METHOD OF RECLAIMING CROSSLINKED RUBBER AND MOLDING OF RECLAIMED RUBBER

A method of crosslinked-rubber reclamation which is less apt to cause a quality deterioration by the generation of a decomposition product. The method comprises: incorporating a degassing carrier into a crosslinked rubber (10) in a reclamation step in which a shear force is applied to the crosslinked rubber (10) to reclaim it and/or in a later step; and removing the degassing carrier together with a decomposition product which has generated in the crosslinked rubber (10). The molded article is produced by crosslinking again the reclaimed rubber thus-obtained.

METHOD FOR PURIFYING CONTAMINATED POLYPROPYLENE

A method for purifying reclaimed polypropylene, such as a polypropylene reclaimed from post-consumer use or post-industrial use, is disclosed. The method involves obtaining the reclaimed polypropylene and contacting it at an elevated temperature and pressure with a fluid solvent to produce an extracted reclaimed polypropylene. The extracted reclaimed polypropylene is dissolved in a solvent at an elevated temperature and pressure to produce a polypropylene solution, which is purified at an elevated temperature and pressure by contacting the polypropylene solution with solid media to produce a purer polypropylene solution. A purer polypropylene is then separated from the purer polypropylene solution.

METHOD FOR PURIFYING CONTAMINATED POLYMERS

A method for purifying a reclaimed polymer, such as a polymer reclaimed from post-consumer use or post-industrial use, is disclosed. The method involves obtaining the reclaimed polymer and dissolving it in a solvent at an elevated temperature and pressure to produce a polymer solution, which is purified at an elevated temperature and pressure by contacting the polymer solution with solid media to produce a purer polymer solution. A purer polymer is then separated from the purer polymer solution.

Methods and Devices for Purifying Polyolefin

Procédé pour la séparation des toiles du caoutchouc dans les objets caoutchoutés.

Verfahren zur Aufarbeitung von Abfällen aus Verbundwerkstoffen

Separation process to the Rezyklieren of sandwich foils.

Industrial process for the recovery and transformation of waste fiber products used in the production of plastic molding materials, involves purifying the waste and producing a fiber flock for processing with thermoplastics

The process involves washing or pyrolyzing the waste products from molding composite and natural fiber materials and transforming into a fiber flock made from a mixture of synthetic polymer fibers processed by apparatus used for producing a granule, fillers and fiber sheets for use as a raw material in systems for molding thermoplastic and thermosetting polymers. The mixture of composite materials comprises polypropylene, polyamide, polyester and acrylic matrices with 10-70% synthetic, artificial or natural fibers. The fibers are mixed with 30-90% thermoplastic or thermosetting materials.

Process of filamentous polymer fiber recovery.

Processo di recupero di fibre polimeriche di tipo poliestere comprendente lutilizzazione di dimetilsolfossido DMSO ad una temperatura compresa tra i 100° e i 175 °C comprendente le fasi di solubilizzare, separare e/o decolorare materiali di tipo fibra, fiocco o filato. Dopo laggiunta di acqua, il materiale polimerico recuperato viene pellettizzato per mezzo di compattazione a freddo. Linvenzione comprende pure un impianto per la realizzazione del processo di recupero.

Process for the fiber money laundering/spun ribbon//woven/cascamecascame of nylon and/or natural polyester and/or fibers.

Processo e relativo impianto che permette di recuperare le fibre naturali e sintetiche in mista nella forma di cascami di tessuto e/o fiocco tessile e/o filato/filo attuando un procedimento di separazione usando il solvente Dimethyl sulfoxide (DMSO C2H6OS) che ha caratteristiche di eco-compatibilità molto buone e rischio pericolosità molto basse. La separazione dei componenti avviene per dissoluzione chimica e termica a seconda del polimero che vuole essere separato e recuperato. Il solvente può essere facilmente recuperato o trasformato in successivi sottoprodotti. I polimeri o le fibre naturali recuperate risultano avere un elevato grado di purezza.

Mounting device for an injection tool mold parts, injection molding tool and injection molding machine.

Es ist eine Montagevorrichtung (5) für Formwerkzeugteile eines Spritzgiesswerkzeugs beschrieben, die eine in eine Spritzgiessmaschine einsetzbare Montageplatte aufweist, auf welcher ein Werkzeugträger (15) zur Aufnahme von ersten Formwerkzeugteilen (10, 10*) montierbar ist. Die Montageplatte ist auf einem Montagerahmen (40) angeordnet, der ein Führungssystem (43, 44, 50) für eine translatorische Verlagerung der Montageplatte entlang einer Längserstreckung des Montagerahmens (40) aufweist. Weiters weist der Montagerahmen (40) eine Abstützeinrichtung (45) für ein stationär anordenbares mit wenigstens einem der ersten Formwerkzeugteile (10, 10*) korrespondierendes zweites Formwerkzeugteil (20) auf. Es sind auch ein Spritzgiesswerkzeug und eine Spritzgiessmaschine beschrieben.

System and method for recycling contaminated polyolefins.

Die Erfindung betrifft ein Recycling-Verfahren für verunreinigte Polyolefine, insbesondere HDPE, bei dem das verunreinigte Polyolefin mittels eines Lösungsmittels aufgequollen wird, wobei sich im Polyolefin vorhandene Verunreinigungen im Lösungsmittel lösen, und danach das Lösungsmittel und die im Lösungsmittel gelösten Verunreinigungen aus dem Polyolefin entfernt werden.

Recycling-Verfahren für verunreinigte Polyolefine.

Die Erfindung betrifft ein Recycling-Verfahren zur Herstellung eines Polyolefin-Rezyklats, aufweisend die Entfernung von Verunreinigungen aus einem verunreinigten Polyolefin-Material, bei welchem ein verunreinigtes Polyolefin-Material in einem Quellschritt mittels eines Lösungsmittels aufgequollen wird, um im verunreinigten Polyolefin-Material vorhandene Verunreinigungen im Lösungsmittel zu lösen und das Lösungsmittel und die im Lösungsmittel gelösten Verunreinigungen aus dem Polyolefin-Material zu entfernen. Erfindungsgemäss wird vor dem Quellschritt ein Waschschritt mit Wasser, Reinigungsmitteln und/oder Lauge durchgeführt. Das verunreinigte Polyolefin-Material wird durch das Quell/Lösungsmittel Recycling-Verfahren so verändert, (i) dass die niedrigmolekularen Ketten unter 2000 Daltons, zu mehr als 90% entfernt bzw. ausgewaschen werden, und dadurch die mittlere molekulare Kettenlänge des Polyolefin-Rezyklats angehoben wird und (ii) dass die Schmelze-Volumenfliessrate (MVR) des Polyolefin-Rezyklats ...

LOWER LAYER OF THE HOUSING OF BATH, MADE BY THE METHOD OF SHAPING BEFORE THE VACUUM OR CASTING, FOR STRENGTHENING THE STATIC STRENGTHENING OF THE UPPER LAYER OF THE HOUSING OF THE BATH

METHOD OF PROCESSING FOR REPEATED USE ARTICLES BASED ON FIBER REINFORCED POLYMER

СПОСОБ ПЕРЕРАБОТКИ ДЛЯ ПОВТОРНОГО ИСПОЛЬЗОВАНИЯ ИЗДЕЛИЙ НА ОСНОВЕ АРМИРОВАННОГО ВОЛОКНОМ ПОЛИМЕРА

В изобретении представлен способ переработки для повторного использования изделия на основе полимера, армированного волокном, в соответствии с которым изделие, в конечном счете разрезанное на фрагменты, растворяют в растворителе, эффективном в растворении полимера, но не волокон, и который склонен к образованию азеотропной смеси с водой, с образованием раствора; волокна извлекают из раствора; волокна промывают растворителем путем переведения их в форму суспензии в упомянутом растворителе и путем перемешивания этой суспензии и/или путем обеспечения циркулирования растворителя через нее; промытые волокна извлекают из суспензии и извлеченные волокна подвергают отпариванию паром для того, чтобы в значительной степени удалить растворитель.

СПОСОБ ПЕРЕРАБОТКИ ДЛЯ ПОВТОРНОГО ИСПОЛЬЗОВАНИЯ ИЗДЕЛИЙ НА ОСНОВЕ АРМИРОВАННОГО ВОЛОКНОМ ПОЛИМЕРА

Способ переработки для повторного использования изделия на основе полимера, армированного волокном, согласно которому: изделие, в конечном счете разрезанное на фрагменты, растворяют в растворителе, который эффективен для растворения полимера, но не волокон, и подвержен образованию азеотропной смеси с водой, с образованием раствора; волокна извлекают из раствора; волокна промывают растворителем путем переведения их в форму суспензии в упомянутом растворителе и путем перемешивания этой суспензии и/или путем обеспечения циркулирования растворителя через нее; промытые волокна извлекают из суспензии; и извлеченные волокна подвергают отпариванию для того, чтобы в значительной степени удалить растворитель.

СПОСІБ ПЕРЕРОБКИ ЗНОШЕНИХ АВТОМОБІЛЬНИХ ШИН І ПРИСТРІЙ ДЛЯ ЙОГО РЕАЛІЗАЦІЇ

Заявлено спосіб і пристрій для переробки зношених автомобільних шин для утилізації відходів гумотехнічних виробів, що здійснюється термообробкою у розплаві продуктів нафтопереробки до досягнення набрякання з наступним їх переміщенням у сепаратор нахиленим живильником та розподілом шин шнековим пресом на гумову масу та залишки металевого корду.

METHOD OF REGENERATION OF CELLULOSE FIBERS FROM USED ABSORBING ARTICLE

Improved method to separate and recover oil and plastic from plastic contaminated with oil

A method for removing contaminants from synthetic resin material containers using a first organic solvent system and a second carbon dioxide system. The organic solvent is utilized for removing the contaminants from the synthetic resin material and the carbon dioxide is used to separate any residual organic solvent from the synthetic resin material.

Method and apparatus for releasing metal-resin joint

PROCEDE DE RECUPERATION SELECTIVE DE MATERIAUX CONSTITUTIFS PROVENANT DE DECHETS DE CABLES ELECTRIQUES ISOLES

PROCEDE DE RECUPERATION SELECTIVE DE MATERIAUX CONSTITUTIFS DE DECHETS 1 DE CABLES ELECTRIQUES ISOLES, COMPRENANT DES CONDUCTEURS METALLIQUES ET UN MATERIAU ISOLANT POLYMERE CONSTITUES AU MOINS EN PARTIE PAR DES HALOGENURES DE POLYVINYLE PLASTIFIES PAR BROYAGE A FROID 10 ET SEPARATION DU MATERIAU POLYMERE. LE PROCEDE CONSISTE, AVANT BROYAGE A FROID, A: A.METTRE EN CONTACT LES DECHETS AVEC UN SOLVANT SELECTIF VIS-A-VIS DES PLASTIFIANTS DANS LE MATERIAU POLYMERE, POUR EXTRAIRE SELECTIVEMENT LES PLASTIFIANTS DU MATERIAU POLYMERE; B.SEPARER LA SOLUTION CONTENANT LE PLASTIFIANT EXTRAIT DU SOLVANT DES DECHETS SOLIDES.

RECUPERATION DE DECHETS ET MATERIAUX COMPOSITES : CELLULOSES, MATIERES PLASTIQUES ET METAUX

LES PRODUITS A TRAITER SONT PRINCIPALEMENT DES DECHETS DE MATIERES PLASTIQUES MELANGES INTIMEMENT A DES METAUX. ILS SONT CLASSES PAR CATEGORIE, NETTOYES, PRESENTES EN VRAC OU COMPACTES SUIVANT LEUR DENSITE, LEUR ASPECT ET LEUR COMPOSITION. L'EMPLOI DE LA CRYOGENIE AVEC DES APPAREILS APPROPRIES A CET EFFET NOUS PERMET DE REFROIDIR A UNE TEMPERATURE CONSTANTE CES DECHETS OU MATERIAUX COMPOSITES. LA TEMPERATURE EN EST CONSTAMMENT VERIFIEE. LES MATERIAUX SONT AMENES A UN GROS BROYEUR 10 TOUJOURS A LA MEME TEMPERATURE CONSTANTE AFIN DE PRODUIRE UN CHOC THERMIQUE. LES ECLATS OBTENUS SONT SEPARES SOIT PAR TRI MAGNETIQUE 12, SOIT PAR CHIMIE 13, SOIT PAR FLOTTATION OU TOUT AUTRE MOYEN, POUR ETRE REPRESENTES D'UNE FACON UTILISABLE OU COMMERCIALE. CE PROCEDE EST CARACTERISE PAR LA SEPARATION ET LA REMISE EN ETAT D'UTILISATION DE DIFFERENTS DECHETS OU PRODUITS PLASTIQUES ET METALLIQUES QUI SANS CELA, PAR LE FAIT DE LEUR MELANGE, RESTERAIENT A L'ETAT DE DECHETS COMPOSITES ET SERAIENT JETES.

PROCESS OF TREATMENT Of a SUBSTRATE

Recovering waste fibres coated with synthetic material - by grinding and treating with solvent to separate fibres and synthetic material

METHOD AND SYSTEM FOR DEPOLYMERIZATION OF GLASS FIBER REINFORCED PLASTIC

A method for depolymerization of glass fiber reinforced plastic comprises: a first mechanochemical process of using and dissolving glass fiber reinforced plastic with benzyl alcohol as a solvent under atmospheric pressure; a glass fiber separation process of separating and collecting glass fiber from a depolymerized body generated in the first mechanochemical process through centrifugation; and a resin and solvent collecting process of collecting the benzyl alcohol through evaporation, and at the same time, collecting resin from a solution in which the glass fiber is removed. COPYRIGHT KIPO 2018 (AA) Start (BB) End (S10) First mechanochemical process of using and dissolving glass fiber reinforced plastic with benzyl alcohol as a solvent under atmospheric pressure (S20) Glass fiber separation process of separating and collecting glass fiber from a depolymerized body generated in the first mechanochemical process through centrifugation (S30) Resin and solvent collecting process of collecting ...

폐플라스틱 재생 시스템 및 재생 플라스틱의 제조공정

... 본 발명은 폐플라스틱 재생 시스템 및 재생 플라스틱 제조공정에 관한 것이다.

폐플라스틱 처리시스템 및 그 처리 방법

... 본 발명은 용매와 폐플라스틱을 공급받아 상기 용매에 상기 폐플라스틱이 용해된 용해물을 저장하는 용해 반응기; 상기 용해 반응기로부터 상기 용해물을 샘플링하여 상기 용해물에 포함된 용질의 용해 농도를 측정하는 산출부; 및 상기 용질의 상기 용매에 대한 용해 농도의 기준값이 저장되고, 기 저장된 상기 기준값과 상기 산출부에서 측정된 상기 용해 농도를 비교하여 상기 용해 반응기를 제어하는 제어부를 포함하는 폐플라스틱 처리시스템에 관한 것이다.

Sistema, processo e equipamento de reciclagem de embalagens plásticas contaminadas com alto impacto ambiental, econômico e social

Solvent-based recovery and recycle of polyamide material

A process is disclosed for recovering polyamide material from post-industrial and post-consumer products containing the polyamide material and insoluble materials. The process includes the steps of: (a) contacting the post-industrial and post-consumer products with a suitable solvent in a reactor; (b) dissolving and partially depolymerizing the polyamide material in the solvent to form a solution by operating the reactor at a predetermined temperature and pressure and for a time sufficient to decrease the average molecular weight of the depolymerized polyamide to less than 90% of the initial molecular weight; (c) separating the insoluble material from the solution; and (d) recovering the depolymerized polyamide from the separated solution. The process may also include the step of repolymerizing the depolymerized polyamide.

Carpet backing adhesive and its use in recycling carpet

An adhesive useful in making recyclable carpet is prepared from a copolymer dispersion and a filler. The copolymer dispersion is prepared in an emulsion polymerization of a mixture of monomers comprising styrene, butadiene, an alkylacrylic acid monomer, in which the alkyl radical of the alkylacrylic acid monomer is a C1 to C6 branched or unbranched hydrocarbyl radical, and a combination of a second ethylenically unsaturated monocarboxylic acid with an ethylenically unsaturated dicarboxylic acid, in which the alkylacrylic acid monomer is present in a quantity predominating the combination of the second ethylenically unsaturated monocarboxylic acid with the ethylenically unsaturated dicarboxylic acid. The adhesive can be completely removed from the face fibers by applied shear in the presence of aqueous alkaline solution. Recyclable carpets made with the adhesive exhibit high delamination strength, both when wet and when dry.

Used paper diaper processing method and used paper diaper processing device

The present invention provides a used paper diaper processing method comprising: a swell suppressing step for immersing a used paper diaper in a swell suppressant solution to suppress the swelling of the polymer with high water absorbability; a breakup step for breaking up the paper diaper subsequent to the swell suppressing step while stirring the same immersed in a processing liquid, into a cover material breakup substance and an absorbing material breakup substance; a cover material breakup substance removing step for removing the cover material breakup substance; a filtering step for filtering the processing liquid containing the absorbing material breakup substance and excreta to separate and remove the absorbing material breakup substance; and a liquid discharging step for discharging the processing liquid containing excreta into a sewage treatment facility; and an absorbing material breakup substance recovering step for recovering the absorbing material breakup substance separated ...

METHOD FOR RECYCLING USED ABSORBENT ARTICLES

A method of recycling a used absorbent article having human waste includes: a first step of separating pulp fiber from the used absorbent article to obtain regenerated pulp fiber; a second step of conversion to solid fuel from constituent materials of the used absorbent article remaining after separation of the pulp fiber to obtain solid fuel, and a third step of supplying waste water containing organic material generated from the first step to a microbial fuel cell to obtain electric power while purifying the waste water. The processing rate for the used absorbent article containing human waste is 90 mass % or greater.

System and method for carpet recovery

A method for recovering carpet comprising polymeric fibers. A seller, i.e. retailer, manufacturer or distributor installs a carpet at a consumer location and establishes and maintains a database of installed carpet information comprising carpet type, installation date and consumer identification data. The useful lifetime of the installed carpet is estimated, and the seller contacts the consumer within a determined period of time of the end of the estimated useful lifetime of the carpet. The seller then preferably provides the consumer with an incentive to replace the carpet, such as a credit towards the purchase of a replacement carpet from the seller. The seller then collects the used carpet and sorts the collected carpet according to polymeric fiber type. At least one type of polymeric fiber is converted into a recovered polymer composition, such as by depolymerizing it into its monomeric components and then repolymerizing the monomeric components to form a recovered polymer composition ...

Processes for recycling polystyrene waste and/or polystyrene copolymer waste

There are provided processes for recycling waste such as polystyrene thermoplastic polymer waste and/or polystyrene thermoplastic copolymer waste as well as recycled polystyrene thermoplastic polymer and/or recycled thermoplastic copolymer that may, for example, be obtained from such processes. The processes can comprise the use of a reducing agent.

Process for recycling articles based on a fibre reinforced polymer

Process for recycling a fibre reinforced polymer article, according to which: - said article, eventually cut in particles, is dissolved in a solvent capable of dissolving the polymer but not the fibres and which is susceptible of forming an azeotrope with water; - the fibres are recovered from said solution; - said fibres are washed with solvent by putting them in the form of a slurry in said solvent and by agitating the slurry and/or by making the solvent circulate through it; - the washed fibres are recovered from said slurry; and - said recovered fibres are submitted to a stripping with steam in order to substantially remove the solvent.

Method of manufacture polyelectrolyte

A method of manufacturing a polyelectrolyte having the step of sulfonating polystyrene resin in a state where the polystyrene resin has been dissolved or dispersed in solvent composed of alicyclic compounds.

Process for separating aluminium foils from plastic foils, in particular PE-foils

In order to develop a process for separating aluminium foils from plastic films, in particular PE films, in such a way that environmentally friendly recovery of the aluminium is possible, it is proposed to heat the composite film at about 100°C in an at least 20% solution of a lower fatty acid CnH2n+1(COOH) where n is less than or equal to 4, that this heating be maintained for from about 10 to 20 minutes, and that, after cooling, the detached plastic films are separated from the aluminium foils which remain, where, in a preferred way of carrying out the process, the cooling is carried out in a tightly sealed vessel in such a way that a reduced pressure, approximately up to 80% of the natural air pressure, is formed on cooling.

PROCESS FOR FABRICATION OF PAINTS BASED ON EXPANDED POLYSTYRENE (EPS) WASTE

AQUEOUS SOLUTION FOR SEPARATING COMPOSITE MATERIAL, METHOD FOR SEPARATING COMPOSITE MATERIAL, AND CONSTITUENT MATERIALS SEPARATED BY THE METHOD

PROBLEM TO BE SOLVED: To provide an aqueous solution for separating a composite material capable of recovering each of separated constituent materials in a readiness to recycle, a method for separating the composite material, and constituent materials separated by the method. SOLUTION: A laminated glass 20 is immersed in the aqueous solution for separating the composite material which is prepared by diluting an alkaline treating water having a hydrogen concentration (pH) of 11-12 with city water to 10-1,000 fold. The aqueous solution for separating the composite material 31 is poured into a container 32. The aqueous solution for separating the composite material 31 poured into is adjusted in its temperature within 30-60°C. A laminated glass 20 whose glass plates 21, 22 are cracked is put in a barrel 33 from a lid part 33a while 50-60 pieces of stainless steel 35 are also put in the barrel 33 from the lid part 33a in order to make the laminated glass 20 easy to separate into the glass plates ...

СПОСОБ НЕПРЕРЫВНОЙ РЕГЕНЕРАЦИИ СЫРЬЕВЫХ МАТЕРИАЛОВ ИЗ МЕЛКОНАРЕЗАННЫХ ОТХОДОВ ПЛЕНКИ С ПОКРЫТИЕМ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Группа изобретений предназначена для переработки любого типа носителей с покрытием или печатным слоем. Мелконарезанные отходы пленки с покрытием, состоящие из полимерной подложки и нанесенного на нее покрытия или печатного слоя, содержащего в некоторых случаях пигменты, диспергированные в связующей матрице, необязательно имеющей сетчатую структуру, из первого накопительного контейнера при комнатной температуре вводят в первый смеситель непрерывного действия, а из второго накопительного контейнера вводят раствор для удаления покрытия, массу измельченной пленки, обработанную в первом цикле, подают во второй смеситель непрерывного действия, в который подают второй раствор для удаления покрытия, затем массу измельченной пленки отделяют от этого раствора. Из этого раствора затем удаляют твердые компоненты и снова подают во второй смеситель непрерывного действия. Изобретение позволяет при комнатной температуре осуществлять регенерацию отходов пленки при экономном расходовании регенерационного ...

Способ очистки загрязненных полимеров

Изобретение относится к способу очистки утилизированных полимеров после бытового использования или после промышленного использования. Способ включает стадию контактирования регенерированного полимера при температуре от 80°С до 220°С и давлении от 1,03 МПа до 103,42 МПа с первым жидким растворителем, имеющим температуру кипения менее 70°С, с получением экстрагированного регенерированного полимера. Экстрагированный регенерированный полимер растворяют в растворителе, выбранном из группы, состоящей из первого жидкого растворителя, второго жидкого растворителя и их смесей, при температуре от 90°С до 220°С и давлении от 2,41 МПа до 137,90 МПа. После чего полученный раствор полимера проходит очистку при повышенной температуре и давлении посредством контакта раствора полимера с твердой средой, с получением более чистого раствора полимера. Затем от более чистого раствора полимера отделяют более чистый полимер. Способ по изобретению позволяет получить полимер, не имеющий цвета и запаха, а также значительного ...

Способ переработки содержащих полиолефин отходов

СПОСОБ ПЕРЕРАБОТКИ УПАКОВОЧНОГО МАТЕРИАЛА

CПOCOБ ПEPEPAБOTKИ METAЛЛCOДEPЖAЩИX OTXOДOB

Использование: переработка металлсодержащих отходе в. Сущность: металлсодержащие отходы обрабатывают раствором бо- рофтористоводородной кислоты и/или ее солей при 20-90°С и наложении электрического тока. При этом используют водный раствор борофтористоводородной кислоты с концентрацией 0,1-50 мас.% при рН раствора 1-8. Полученные металлические окислы осаждаютс  в анодной камере, а отходы собирают в анодной корзине. Окислы восстанавливают в металлы тепловым разложением , ртуть рекуперируют дистилл цией, а другие металлы -электролитическим разделением . 13 з.п. ф-лы, 2 ил.

Caprolactam recovery from new or post-consumption polyamide-six carpet waste, involves dissolving crushed waste in caprolactam, separating insoluble residue and direct alkaline depolymerization

Recovery of caprolactam from PA6 (polyamide 6) carpet waste, comprises dissolving the coarsely crushed waste in caprolactam at a temperature not less than 120 deg C, separating the solution from insoluble residue and subjecting the resultant solution to direct alkaline depolymerization.

Mixed polyolefin separation used for low density polyethylene and high density polyethylene in waste involves using lower alkane as solvent and different lower alkane as separation aid

Separation of mixed polyolefins by liquid-liquid separation comprises using an alkane with 4-16, preferably 5-12, especially 6 C atoms as the solvent in which the polyolefins are dissolved and where solvent contains a phase-forming aid comprising a branched polyolefin based on a 3-8 (3-4) C alkane. The temperature range used has an upper limit of 0.86 of the reduced temperature (Tr) of the pure solvent, the upper phase formed contains the aid and any branched polyolefin and the lower phase contains no branched polyolefin and below 10 wt.% of the aid. The aid is used at 0.3-10 times the amount of the branched polyolefin.

Verfahren zur Wiederverwertung von Faserverbundwerkstoffen

Die Erfindung betrifft ein Verfahren zur Wiederverwertung von Verbundwerkstoffen, die Fasern und eine Matrix umfassen und zeichnet sich dadurch aus, dass der Verbundwerkstoff elektromagnetischen Wellen in Form von Mikrowellen ausgesetzt wird. Durch die elektromagnetischen Wellen wird ein Energieeintrag in den Verbundwerkstoff induziert, was zu einer Trennung von Fasern und Matrix führt. Der Trennvorgang kann durch ein geeignetes Lösungsmittel unterstützt werden.

Plastic foam decontamination process involves removal of fluorinated hydrocarbons by passing steam through an evaporation drum sealed by compacted plastic in extruders at each end

The initial material is pelletized and fed continuously to first screw extruder(1) whose conical output end forms a solid material steam barrier. Pelletized material is pumped out into rotating evaporation drum(2). Steam(7) fed to the drum drives out the fluorinated contaminants and flows to filtering and condensation zone. Decontaminated plastic then flows via a shaft(4) into a second screw extruder(9). The initial material is pelletized and fed continuously to a first screw extruder(1) whose conical output end forms a solid material steam barrier. Pelletized material is pumped out into a rotating evaporation drum(2). Steam(7) fed to the drum drives out the fluorinated contaminants and flows to a filtering and condensation zone. Decontaminated plastic then flows via a shaft(4) into a second screw extruder(9) whose conical output end forms another steam barrier for the drum. Pelletizing produces particles 5-10mm across. Material passes through the evaporation drum under gravity. Condensate ...

METHOD FOR THE SELECTIVE RECOVERY OF CONSTITUENT MATERIALS FROM INSULATED-ELECTRICAL-CABLE WASTES

PROCEDURE FOR THE RECYCLING PLASTIC FOILS COATED BY WITH ADHESIVE.

ACCELERATION OF THE PHASE SEPARATION OF POLYMERE ABSTENTION LIQUID PHASES

PROCEDURE AND PLANT FOR THE SEPARATION OF COMPONENTS FROM SCRAP TIRES

PROCEDURE FOR SORTING POLYMERS

PROCEDURE FOR THE RE-USE OF DETERGENTS FROM BAGS

DEVICE FOR SEPARATION AND PRODUCTION OF VOLUME-REDUCED POLYSTYRENE RESIN GEL

VERFAHREN ZUM ENTSORGEN UND VERWERTEN VON BAUTEILEN AUS ELEKTRISCHEN UND ELEKTRONISCHEN GERÄTEN UND ANLAGEN

PROCEDURE FOR THE TREATMENT OF A SUBSTRATE

PROCEDURE FOR THE SEPARATION FROM POLYOLEFINI PLASTIC MIXTURES

SEPARATION OF THE COMPONENTS OF A FLOOR MAT TO THEIR RECYCLING

A method of treating a rubber containing waste material

Separation of floor covering components for recycling

Method for processing a substrate

Methods and systems for recycling carpet and carpets manufactured from recycled material

The present invention pertains to carpet and methods of making and recycling carpet. In one aspect, the carpet includes: a primary backing which has a face and a back surface; a plurality of fibers attached to the primary backing and extending from the face of the primary backing and exposed at the back surface of the primary backing; an adhesive composition backing comprising a recycled polymer reclaimed from a terpene solvent solution; and an optional secondary backing adjacent to the adhesive backing. The method of making carpet includes extrusion coating the adhesive composition onto the back surface of a primary backing to form the adhesive composition backing. The method of recycling carpet can recover one or more polymeric carpet components by dissolving them.

Polyester film, method for manufacturing same, and method for recycling polyethylene terephthalate container using same

Embodiments according to the present invention pertain to a polyester film, a method for manufacturing same, and a method for recycling a polyethylene terephthalate (PET) container using same. The polyester film does not have a crystallization temperature (Tc) or has a crystallization temperature satisfying 70-130°C as measured by differential scanning calorimetry, thus exhibiting excellent shrinkage properties and excellent recyclability due to controlled crystallinity, such that clumping hardly occurs even when the polyester film is dried at high temperature for a long time in a recycling process.

USED PAPER DIAPER PROCESSING METHOD AND USED PAPER DIAPER PROCESSING DEVICE

A used paper diaper processing method characterized by comprising a swell suppressing step for immersing a used paper diaper in a swell suppressant solution to suppress the swelling of high polymers of water absorbability, a breakup step for breaking up the paper diaper subsequent to the swell suppressing step while stirring the same immersed in a processing liquid, into a cover material breakup substance and a absorbing material breakup substance, a cover material breakup substance removing step for removing the cover material breakup substance, a filtering step for filtering the process liquid containing the absorbing material breakup substance and excreta to separate and remove the absorbing material breakup substance, a liquid discharging step for discharging the process liquid containing excreta into a sewage treating facility, an absorbing material breakup substance recovering step for recovering the absorbing material breakup substance separated and removed by the filtering step.

CARPET BACKING ADHESIVE AND ITS USE IN RECYCLABLE CARPET

An adhesive useful in making recyclable carpet is prepared from a copolymer dispersion and a filler. The copolymer dispersion is prepared in an emulsion polymerization of a mixture of monomers comprising styrene, butadiene, an alkylacrylic acid monomer, in which the alkyl radical of the alkylacrylic acid monomer is a C1 to C6 branched or unbranched hydrocarbyl radical, and a combination of a second ethylenically unsaturated monocarboxylic acid with an ethylenically unsaturated dicarboxylic acid, in which the alkyacrylic acid monomer is present in a quantity predominating the combination of the second ethylenically unsaturated monocarboxylic acid with the ethylenically unsaturated dicarboxylic acid. The adhesive can be completely removed from the face fibers by applied shear in the presence of aqueous alkaline solution. Recyclable carpets made with the adhesive exhibit high delamination strenght, both when wet and when dry.

METHOD FOR PURIFYING CONTAMINATED POLYMERS

A method for purifying a reclaimed polymer, such as a polymer reclaimed from post-consumer use or post-industrial use, is disclosed. The method involves obtaining the reclaimed polymer and contacting it at an elevated temperature and pressure with a fluid solvent to produce an extracted reclaimed polymer. The extracted reclaimed polymer is dissolved in a solvent at an elevated temperature and pressure to produce a polymer solution. A polymer is then separated from the polymer solution.

METHOD FOR PROCESSING PACKAGING MATERIAL

The invention relates to a method for processing metallized packaging materials, in particular beverage cartons or blister packs. According to the invention, acid is used to dissolve the aluminum and separate same from the plastic material. The metal-containing solution of the acid is then subjected to a pyrohydrolytic treatment so as to recover the acid. The aluminum can be recovered as valuable alumina.

METHOD FOR PROCESSING PACKAGING MATERIAL

The invention relates to a method for processing metallized packaging materials, in particular beverage cartons or blister packs. According to the invention, acid is used to dissolve the aluminum and separate same from the plastic material. The metal-containing solution of the acid is then subjected to a pyrohydrolytic treatment so as to recover the acid. The aluminum can be recovered as valuable alumina.

POLYMER RECYCLING BY SELECTIVE DISSOLUTION

A method for separating polymers from a physically commingled solid mixture containing a plurality of polymers comprises dissolving a first one of the polymers in a solvent at a first lower temperature to form a first preferably single phase solution and a remaining solid component. The solid component contains additional polymers which are not solvable to the solvent at the first temperature but which may be soluble at higher temperatures. The method includes subsequently heating the solvent to dissolve additional polymer from the solid component to form subsequent solutions. The polymers are then separated from their respective solution either using flash evaporation techniques when more than one polymer has been dissolved at a single temperature, or conventional techniques for extracting a polymer from a solvent in a solution.

METHOD OF PROCESSING WASTE BY SEPARATING ALYuMINIZIROVANNYKh AND PLASTIC COMPONENTS CARDBOARD OR OTHER PACKING, AND NECESSARY EQUIPMENT

METHOD FOR PRODUCING RECYCLED PRODUCT, RECYCLED RESIN PELLET, AND RECYCLED FILM

A method includes producing recycled products from a plurality of used absorbent articles, each including a top sheet, a back sheet and an absorbent body including absorbent body materials, by recovering a plurality of structural members from the plurality of used absorbent articles. At least one of the top sheet and the back sheet includes a film. The method includes: separating the plurality of used absorbent articles into a plurality of the films and the absorbent body materials; sorting the plurality of films into a plurality of types of recyclable films according to the filler contents of the plurality of films; and forming a plurality of types of recycled resin pellets from the plurality of types of recyclable films. 1. A method of producing recycled products from a plurality of used absorbent articles by recovering a plurality of structural members from the plurality of used absorbent articles , wherein each of the plurality of used absorbent articles comprises a top sheet , a back sheet , and an absorbent body comprising absorbent body materials , and wherein at least one of the top sheet and the back sheet comprises a film , the method comprising:separating the plurality of used absorbent articles into a plurality of the films and the absorbent body materials;sorting the plurality of films into a plurality of types of recyclable films according to filler contents of the plurality of films; andforming a plurality of types of recycled resin pellets from the plurality of types of recyclable films.2. The method according to claim 1 , wherein the plurality of films is sorted into the plurality of types of recyclable films based on a difference in specific gravity between the plurality of films.3. The method according to claim 2 , wherein the plurality of films is sorted into the plurality of types of recyclable films by a cyclone method.4. The method according to claim 1 , further comprising:selecting at least one type of recycled resin pellet from the plurality ...

RECYCLING CARBON FIBER BASED MATERIALS

A process is provided to reclaim carbon fiber from a cured vinyl ester, crosslinked unsaturated polyester, or epoxy thermoset matrix. The composite pieces are added to a polyol solvent composition under to conditions to free more than 95% by weight of the carbon fiber from the composite. The freed carbon fibers are washed and dried to reclaim carbon fiber reusable to reinforce a polymer to form a new FRC article. Solvents are chosen that are low cost and low toxicity. Processing is further facilitated by techniques such as solvent pre-swell of the particles, microwave heating, and sonication to promote thermoset matrix digestion to free reinforcing carbon fibers. 1. A process to reclaim carbon fiber from a cured thermoset matrix comprising:adding the cured thermoset matrix to a polyol solvent composition under to conditions to free more than 95% by weight of the carbon fiber from the cured thermoset matrix;washing the carbon fiber with water; anddrying the carbon fiber to reclaim the carbon fiber.2. The process of wherein more than 97% by weight of the carbon fiber is freed from the particles.3. The process of wherein more than 95% by weight of the carbon fiber is reclaimed.4. The process of wherein more than 99% by weight of the carbon fiber is freed from the particles.5. The process of wherein more than 99% by weight of the carbon fiber is reclaimed.6. The process of wherein said polyol solvent composition comprises more than 95% total weight percent of diethylene glycol monomethyl ether.7. The process of wherein said polyol solvent composition is molten glucose.8. The process of wherein said polyol solvent composition is a sugar alcohol.9. The process of wherein said polyol solvent composition comprises a monosaccharide or disaccharide dissolved in a glycol.10. The process of wherein said glycol in an aqueous solution.11. The process of wherein said conditions comprise a constant temperature of between 125 and 250 degrees Celsius.12. The process of wherein said ...

EXTRUDER, FACILITY COMPRISING AN EXTRUDER, AND METHOD FOR PRODUCING TARGET POLYMER PRODUCTS CONSISTING OF A PLASTIC-CONTAINING MATERIAL FROM A SOLUTION USING SUCH AN EXTRUDER

The invention relates to an extruder () comprising a housing (), a first material inlet () for a mixture () at least consisting of a solvent and a dissolved medium, a material outlet (), a screw (), a screw drive (), and at least one distillation region (-) between the inlet () and the outlet (), which allows an outflow of solvent, and a discharge line (-) for the solvent. 130313246333534. An extruder () , comprising a housing () , a first material inlet () for a mixture () at least consisting of solvent and dissolved medium , a material outlet () , a screw () rotatable in the housing , and a screw drive () ,characterised by{'b': 36', '32', '33, 'i': a', 'd, 'at least one distillation region (-) between the inlet () and the outlet (), which allows an outflow of solvent, and'}{'b': 43', '45, 'a discharge line ( ) for the solvent.'}23631ad. The extruder according to claim 1 , characterised in that the distillation region (-) has a widening in the housing () to which the outlet is attached.335. The extruder according to claim 2 , characterised in that the screw () at the downstream end of the widening has a self-pulling design.44846. The extruder according to or claim 2 , characterised in that the configuration is such that in operation the volume () of the widening is only partially occupied by the transported mixture () and the outlet is attached to the volume not occupied.5. The extruder according to one of the preceding claims claim 2 , comprising a second material inlet for the addition of an aggregate.650. The extruder according to one of the preceding claims claim 2 , comprising a kneading device () for kneading the material in the extruder.73635ad. The extruder according to one of the preceding claims claim 2 , comprising two claim 2 , three claim 2 , four claim 2 , five or more distillation regions (-) arranged in succession along the screw ().850. The extruder according to and claim 2 , in which a kneading device () is located between two distillation regions ...

RECYCLING OF COMPOSITES CONTAINING LAYERS UNSUITABLE FOR RECYCLING

An added layer attached to a textile sheet using polymeric adhesive placed over a textile sheet or between the textile sheet and an added layer is removed by applying heat or a solvent and at least one of an abrasive action, squeezing, or shaving action to remove the adhesive layer or both the added layer and the adhesive sublayer and to prepare the textile sheet for recycling into a new textile structure, preferably into a textile sheet performing the same function as the original textile sheet. 1. A method for processing a composite comprising a first layer and an added layer for recycling , the method comprising:applying heat, solvent or heat and solvent to the composite to liquefy the added layer without melting or dissolving the first layer;removing liquified added layer;forcing at least a portion of liquified added layer from the first layer; andprocessing the first layer with the added layer in a recycling process to generate a recycled raw material used for incorporation in a new composite.2. The method of claim 1 , wherein forcing at least a portion of the liquified added out of the first layer comprises squeezing the first layer.3. The method of claim 1 , wherein removing liquified added layer and forcing at least a portion of the liquified added out of the first layer comprise blowing heated air through the first layer claim 1 , applying suction to the first layer or blowing heated air through the first layer and applying suction to the first layer.4. The method of claim 1 , wherein the solvent comprises a ketone claim 1 , a paraffinic solvent or a napthenic solvent.5. The method of claim 1 , wherein the added layer comprises a pressure sensitive adhesive.6. The method of claim 1 , wherein the composite further comprises an adhesive layer between the added layer and the first layer to attach the added layer to the first layer;applying heat, solvent or heat and solvent further comprises applying heat, solvent or heat and solvent to the composite to liquefy ...

Method for Producing Recycled Polyethylene with Virgin-Like Optical Properties

A method for purifying a contaminated reclaimed polyethylene is provided. The method comprises obtaining the contaminated reclaimed polyethylene, extracting it with a solvent to produce an extracted contaminated reclaimed polyethylene, and then dissolving it in the solvent to produce a first suspension comprising dissolved polyethylene and suspended contaminants. The first suspension is settled to produce a second suspension comprising dissolved polyethylene and suspended remaining contaminants, and the second suspension is purified by contacting it with solid media to produce a third suspension comprising purer polyethylene. Finally, the purer polyethylene is separated from the third suspension and it has virgin-like optical properties.

METHOD FOR RECOVERING CONSTITUENT MEMBERS FROM USED ABSORBENT ARTICLE

A method of recovering structural members from a used absorbent article comprising a front sheet, a back sheet and an absorbent body between the front sheet and the back sheet, wherein at least one of the front sheet and the back sheet includes a film, and wherein the absorbent body includes an absorbent body material, may include swelling the used absorbent article with water, applying a physical shock to and disintegrating the swelled used absorbent article into at least the film and the absorbent body material, and separating the film and the absorbent body material. 1. A method of recovering structural members from a used absorbent article comprising a front sheet , a back sheet , and an absorbent body between the front sheet and the back sheet , wherein at least one of the front sheet and the back sheet comprises a film , and wherein the absorbent body comprises an absorbent body material , the method comprising:swelling the used absorbent article with water;applying a physical shock to and disintegrating the swelled used absorbent article into at least the film and the absorbent body material; andseparating the film and the absorbent body material.2. The method according to claim 1 , wherein the absorbent body material includes a superabsorbent polymer and pulp fibers claim 1 ,wherein the method further comprises inactivating the superabsorbent polymer in an acidic aqueous solution containing an inactivating agent, before the separating of the film and the absorbent body material, andwherein in the separating of the film and the absorbent body material, the film is separated from a mixture containing the pulp fibers, the inactivated superabsorbent polymer, and any waste water discharged from the inactivation of the superabsorbent polymer.3. The method according to claim 1 , wherein in the disintegrating of the swelled used absorbent article claim 1 ,the swelled used absorbent article is loaded into a horizontal-axis rotary drum, andthe physical shock is ...

Methods useful for recovering polymers from electronic and other wastes

Systems and methods for purifying or recycling polymeric materials such as polycarbonates are disclosed. Such methods may include performing two or more extractions using differing solvent media to remove non-target materials and attain a purified composition of a target polymer. Other steps including dissolution, precipitation, filtration, and/or centrifugation may also be performed in the methods of the present invention.

METHOD FOR SOLVENT REMOVAL FROM A POLYMER SOLUTION BY INTEGRATED DRUM-DRYING AND EXTRUSION

The invention relates to a continuous method for removing a solvent from a suspension or solution comprising a dissolved target polymer by integrated drum-drying and extrusion of said suspension or solution comprising the dissolved target polymer. The invention also relates to a plastic waste recycling system for recycling a target polymer. Furthermore, the invention also relates to a polymer material obtained by this recycling method. 1. A continuous method for removing at least one solvent from a liquefied form comprising a dissolved target polymer , wherein said method comprises the following steps:evaporating at least one solvent from said liquefied form in a drum-dryer comprising at least one heated rotary drum, wherein said liquefied form contacts a shell surface of the at least one heated rotary drum at a temperature of up to 75° C. at a pressure of <500 mbar, and wherein a drum-dryer dried film comprising the target polymer is produced at the shell surface of the at least one heated rotary drum,detaching the drum-dryer dried film from the shell surface of the at least one heated rotary drum, andtransferring the detached drum-dryer dried film from the drum-dryer to an extruder through a vacuum seal between the drum-dryer and the extruder.2. The method according to claim 1 , wherein said liquefied form contacts a shell surface of the at least one heated rotary drum at a temperature of up to 65° C. at a pressure of <300 mbar.3. The method according to claim 1 , wherein the continuous transfer of the detached drum-dryer dried film to the extruder is facilitated by means of a guiding mechanism that continuously directs the detached drum-dryer dried film from the drum-dryer shell surface into the extruder.4. The method according to claim 3 , wherein the guiding mechanism comprises the use of a guiding surface that is juxtaposed to the blade such that said guiding surface contacts and directs the detached drum-dryer dried film to the outlet opening of the drum- ...

Lewis Base-Mediated Recovery of Fibers From Fiber Reinforced Polymers

Disclosed are methods and apparatus for recovering fibers from fiber reinforced polymers wherein the fiber reinforced polymer is contacted with a Lewis base for a time sufficient to allow at least partial depolymerization of the polymer. 1. A method of recovering free fibers from a fiber reinforced polymer , the method comprising: the Lewis base has a melting point of at least about 35° C.; and', 'the fiber reinforced polymer is contained in a container, wherein the container is suspended in the vessel and comprises a plurality of perforations, and is configured to rotate within the vessel;, 'contacting a fiber reinforced polymer with a molten Lewis base in a reaction vessel, wherein'}rotating the container while in contact with the molten Lewis base for a period of time sufficient to at least partially depolymerize a portion of the fiber reinforced polymer to yield free fiber.2. A method according to claim 1 , wherein the container is rotated in alternating first and second directions every 0.1-10 seconds.3. A method according to claim 1 , further comprising removing the free fiber from the reaction vessel.4. A method according to claim 3 , further comprising cleaning the free fiber claim 3 , wherein the cleaning is performed at a temperature greater than the melting point of the Lewis base.5. A method according to claim 4 , wherein the cleaning comprises washing the mass to yield free fiber claim 4 , wherein the washing comprises washing the mass with a gas or washing the mass with a solvent in which each of the Lewis base and the depolymerized polymer resin are soluble.6. A method according to claim 4 , wherein the cleaning comprises removing free fiber from the mass by spinning the mass claim 4 , by pressing the mass claim 4 , or a combination thereof.7. A method according to claim 1 , wherein the temperature of the molten Lewis base is between about 150° C. and 360° C.8. A method according to claim 1 , where the contacting is carried out under an inert ...

Solvent-based recycling with a roll-to-roll processing step

Subject-matter of the present invention is a method for removing at least one polymer component from plastic waste film material, wherein the plastic waste film material comprises at least a first polymer to be solved and a second polymer component, wherein the method comprises the steps of moving said plastic film material across at least one solvent bath which is filled with a solvent, wherein said solvent is a solvent for the first polymer component to be solved, and wherein at least the second polymer component is non-soluble in said solvent. 1. Method for removing at least one polymer component from plastic waste film material , wherein the plastic waste film material comprises at least a first polymer component to be solved and a second polymer component , wherein the method comprises the steps of wherein said plastic film material is rolled material,', 'and wherein said plastic film material is being passed by at least a rolling drum across at least one bath which is filled with the solvent., '(i) moving the plastic film material across at least one solvent bath, which is filled with a solvent, wherein the solvent is a solvent for at least the first polymer component to be solved, and wherein at least the second polymer component is non-soluble in the solvent,'}2. Method according to claim 1 , wherein the plastic film material is subject to mechanical pretreatment including a washing step.3. Method according to claim 1 , comprising a step of decolorization of the solved first polymer component.4. Method according to claim 1 , wherein the bath and the space above said bath are arranged in a gas-tight system.5. Method according to claim 1 , wherein the solvent bath has an average temperature of at least 30° C. claim 1 , preferably of at least 40° C. claim 1 , more preferably of at least 60° C. claim 1 , even more preferably of at least 80° C. even more preferably of at least 100° C. claim 1 , even more preferably of at least 120° C. claim 1 , even more ...

RECYCLING OF POLYMER MATRIX COMPOSITE

The present invention relates in general to recycling of polymer matrix composite. In particular, the invention relates to a process for separating reinforcement material from polymer matrix composite comprising the reinforcement material within a thermoset polymer matrix. 1. A process for separating reinforcement material from polymer matrix composite comprising the reinforcement material within a thermoset polymer matrix , the process comprising bringing into contact (i) the polymer matrix composite , and (ii) a reclaim composition comprising a phenolic compound and an acidic or basic catalyst , wherein through contact with the reclaim composition the thermoset polymer matrix (a) degrades via chain scission and becomes solubilised within the reclaim composition , and (b) consequently releases the reinforcement material into the reclaim composition.2. The process according to claim 1 , wherein the reclaim composition is heated to a temperature of at least 100° C.31. The process according to or claim 1 , wherein the reclaim composition is subjected to a pressure greater than bar.4. The process according to any one of to claim 1 , wherein the phenolic compound is selected from phenol claim 1 , cresols claim 1 , catechol claim 1 , resorcinol claim 1 , hydroquinone claim 1 , hydroxylbenzoic acids claim 1 , nitrophenols claim 1 , nitrosophenols claim 1 , phenolic aldehydes and combinations thereof5. The process according to any one of to claim 1 , wherein the acidic catalyst is selected from hydrochloric acid claim 1 , acetic acid claim 1 , lactic acid claim 1 , formic acid claim 1 , propionic acid claim 1 , citric acid claim 1 , methane sulfonic acid claim 1 , toluene sulfonic acids claim 1 , sulfuric acid claim 1 , benzoic acid claim 1 , phthalic acid and combinations thereof.6. The process according to any one of to claim 1 , wherein the basic catalyst is selected from hydroxides or carbonates of alkali metals and alkaline earth metals claim 1 , ammonia claim 1 , ...

A METHOD FOR RECOVERING POLYMER FROM PRINTED PETG SUBSTRATES

A method for recovering polymer from printed glycol-modified poly(ethylene tefephtalate) (PETG) substrates, comprising the steps of: providing a printed PETG substrate with the print layer comprising pigments and/or dyes dispersed in a binder matrix; chopping the substrate into irregular strips and; treating the chopped substrate with a treating composition; wherein the treating composition is an aqueous azeotrope of an organic low molecular weight, polar solvent selected from the group consisting of ketones, aldehydes, alcohols and esters. 1. A method for recovering polymer from printed glycol-modified poly(ethylene tefephtalate) (PETG) substrates , comprising the steps of:providing a printed PETG substrate with a print layer comprising pigments and/or dyes dispersed in a binder matrix;chopping the printed PETG substrate into irregular strips; andtreating the printed PETG substrate chopped into the irregular strips with a treating composition;wherein the treating composition is an aqueous azeotrope of an organic, low molecular weight, polar solvent selected from a group consisting of: ketones, aldehydes, alcohols and esters.2. The method according to claim 1 , wherein the solvent is an aliphatic having from 1 to 7 carbon atoms in each alkyl moiety.3. The method according to wherein the solvent is selected from a group consisting of: acetone claim 2 , ethanol claim 2 , propanol claim 2 , methylethylketone and ethyl acetate.4. The method according to wherein the strips have a width of no more than 5 cm.5. The method according to claim 1 , comprising carrying out treating at an ambient temperature.6. The method according to claim 1 , comprising treating for 20 minutes.7. The method according to claim 1 , comprising repeating the step of treating from 3 to 5 times.8. The method according to claim 1 , comprising drying and granulating the printed PETG substrate chopped into the irregular strips after the step of treating claim 1 , to obtain a PETG granulate.9. The ...

Process for Producing Monovinylaromatic Polymer Incorporating Post-Consumer Recycled Polystyrene, Monovinylaromatic Polymer Incorporating Post-Consumer Recycled Polystyrene and Articles Produced Thereof

The invention relates to a process and an installation to produce a monovinylaromatic polymer (3) comprising post-consumer recycled polystyrene (PCR-PS) wherein the process comprises the steps of mixing the PCR-PS (5) and the monovinylaromatic monomer (7) within a dissolver (9) to dissolve the PCR-PS (5) in the monovinylaromatic monomer (7) so as to produce a polymerization mixture (13); and a step of filtering the polymerization mixture (13) that includes continuously redirecting at least a part of the stream of the filtered polymerization mixture (17) back to the dissolver (9) and mixing it with the polymerization mixture (13) so as to continuously reduce the content of insoluble material in the polymerization mixture (13) contained in the dissolver (9).

SUPERCRITICAL HYDROCYCLOTRON AND RELATED METHODS

A supercritical hydrocyclotron for transforming one or more selected polymeric materials into a plurality of reaction products via supercritical or near-supercritical water reaction that enable the rapid and economic conversion of solid biomass and/or waste plastic materials (i.e., organic materials) into smaller liquid and gaseous hydrocarbon molecules—smaller hydrocarbon molecules that, in turn, are useful as chemical feedstock materials including, for example, liquid transportation fuels and bio-adhesives. The innovative supercritical hydrocyclonic systems and related mobile units disclosed herein comprise, in combination, (1) a supercritical water (or near-supercritical water) treatment system for converting organic materials into smaller hydrocarbon molecules, and (2) a hydrocyclonic separation system for recovering the smaller hydrocarbon molecules from the combined water/hydrocarbon effluent. 1. A supercritical hydrocyclotron for transforming one or more selected organic materials into a plurality of reaction products via supercritical or near-supercritical water reaction , comprising:a conveyor having an inlet and a downstream outlet;a steam generator fluidically connected to a downstream inlet manifold, wherein the inlet manifold forms a ring having a plurality of inwardly facing exit portals, wherein the plurality of exit portals is circumferentially positioned about the inner surface of the ring;a tubular reactor having an interior space fluidically connected to an inlet end and an outlet end, wherein the inlet end of the tubular reactor is adjacent and fluidically connected to both (i) the outlet of the conveyor, and (ii) the plurality of circumferentially positioned exit portals of the inlet manifold, and wherein the inlet end of the reactor also comprises an axially aligned occlusion having one or more through-holes, wherein the tubular reactor is configured such that, under operating conditions, a flowing polymeric extrudate exiting the outlet of the ...

Methods and systems for carpet recycling

The present invention includes improved systems and methods for recycling one or more polymers from a carpet that has been contacted with a solvent to dissolve an adhesive carpet backing under conditions that dissolve the adhesive carpet backing to provide a reclaimed polymer composition, the improvement comprising a mechanical disruptor that both pulls and separates the polymers from the adhesive carpet backing concurrently in at least two different vectors for a time sufficient to separate the one or more polymers from the adhesive carpet backing following the step of dissolving the carpet backing with the solvent, contacting the portions of carpet, wherein the improvement provides for the complete separation of two or more polymer components, and the carpet adhesive, and the two or more polymers from the carpet are produced without substantially sheering the two or more polymers.

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 and Apparatus for Recycling Packaging Material

A method for recycling of packaging material () is disclosed. The packaging material () comprises a multiple layer material () comprising a metal layer (), at least one polymer layer () and, optionally, a paperboard layer (). The method comprises placing the residual waste in a vat () comprising a separation fluid () to produce a mixture of metal shreds from the metal layer (), plastic shreds from the polymer layer () and residual components. The separation fluid comprises a mixture comprising at least one swelling agent and at least one carboxylic acid. 1. A method for the separation of a metal layer from a polymer layer in a multiple layer material comprising:placing the multiple layer material in a vat comprising a separation fluid, wherein the separation fluid comprises a mixture comprising at least one swelling agent and at least one carboxylic acid.2. The method of claim 1 , wherein the swelling agent is at least one of a hydrocarbon solvent claim 1 , selected from the group consisting of aromatic hydrocarbons claim 1 , such as toluene claim 1 , xylene claim 1 , ethylbenzene or solvents of the solvent naphtha types claim 1 , alicyclic hydrocarbons claim 1 , such as cyclohexane or decalin claim 1 , olefins claim 1 , terpenes claim 1 , and acyclic aliphatic hydrocarbons claim 1 , or mixtures thereof claim 1 , or an aprotic solvent selected from the group consisting of ketones claim 1 , esters and ethers.3. The method of claim 1 , wherein separation fluid further comprises water and at least one surfactant.4. The method of claim 3 , wherein separation fluid is a microemulsion.5. The method of claim 3 , wherein the at least one surfactant is selected from the group of anionic surfactants consisting of alkyl sulfonates and sulfates claim 3 , alkylbenzene sulfonates and sulfates claim 3 , olefin sulfonates claim 3 , alkyl ether sulfonates and sulfates claim 3 , or mixtures thereof.6. The method of claim 1 , wherein the at least one carboxylic acid is selected from ...

Separation fluid, method and apparatus for recycling multilayer material using a passivation agent

A method for recycling of multilayer material is disclosed. The multilayer material (10) comprises a metal layer (30) and at least one further layer (20, 40). The method comprises placing the packaging material in a vat (310) comprising a separation fluid (330) to produce a mixture of metal shreds from the metal layer (30), plastic shreds from the polymer layer (20, 40) and residual components. The separation fluid comprises a mixture comprising a mixture of water, carboxylic acid, carboxylate salt and passivation agent for passivating the surface of the metal layer.

Method For Purification of Depolymerized Polymers Using Supercritical Fluid Extraction

A method for purifying polymers made from depolymerization of plastic can include selecting a polymer for purification, adding the polymer to a reaction vessel with a solvent, heating the mixture to promote migration of contaminants from the polymer to the solvent, performing an extraction technique to remove contaminants, depressurizing the reaction vessel to isolate a purified polymer, and allowing the purified polymer to cool. In some embodiments, the polymer is a polyethylene polymer. In other embodiments, the polymer is a polypropylene polymer. In some embodiments, the polymer is a polystyrene polymer. In some embodiments, the extraction technique is supercritical fluid extraction using supercritical CO2 as a solvent. Parameters including temperature, pressure, duration, agitation rate, starting solvent volume, and co-solvent addition for supercritical fluid extraction can be selected based on the properties of the polymer to be purified. The method can remove contaminating organic and inorganic compounds from the polymers.

CARBON FIBER RECOVERY METHOD

A carbon fiber recovery method for recovering carbon fibers from a fiber reinforced plastic member having a carbon fiber reinforced plastic (CFRP) layer on which a glass fiber reinforced plastic (GFRP) layer is formed is provided. This method includes: forming a cut that penetrates through the GFRP layer and reaches the CFRP layer in the fiber reinforced plastic member; causing a heated phosphorus-containing solution to penetrate from the cut and separating the CFRP layer from the GFRP layer in the vicinity of an interface between the CFRP layer and the GFRP layer; and dissolving, by a resin solution, a resin part of the CFRP layer from which the GFRP layer has been removed and then recovering the remaining carbon fibers. 1. A carbon fiber recovery method for recovering carbon fibers from a fiber reinforced plastic member having a carbon fiber reinforced plastic layer on which a glass fiber reinforced plastic layer is formed , the method comprising:forming a cut that penetrates through the glass fiber reinforced plastic layer and reaches the carbon fiber reinforced plastic layer in the fiber reinforced plastic member;causing a heated phosphorus-containing solution to penetrate from the cut and separating the carbon fiber reinforced plastic layer from the glass fiber reinforced plastic layer in the vicinity of an interface between the carbon fiber reinforced plastic layer and the glass fiber reinforced plastic layer; anddissolving, by a resin solution, a resin part of the carbon fiber reinforced plastic layer from which the glass fiber reinforced plastic layer has been removed and then recovering the remaining carbon fibers.2. The carbon fiber recovery method according to claim 1 , wherein when the heated phosphorus-containing solution penetrates from the cut claim 1 , the fiber reinforced plastic member is immersed in the phosphorus-containing solution.3. The carbon fiber recovery method according to claim 1 , wherein claim 1 , when the heated phosphorus-containing ...

Method of processing frp

A laser beam is irradiated onto a surface of FRP to remove thermosetting resin in an irradiated position of the laser beam such that fiber material contained in the FRP is exposed.

RECOVERY OF REINFORCING FIBERS FROM FIBER-REINFORCED COMPOSITES

Processing fiber-reinforced composite to recover reinforcing fibers includes first treating the composite with a normally-liquid first solvent for material of the matrix followed by second treating of solid residue including reinforcing fibers from the first treating with a normally-gaseous material contacted with the solid residue under conditions of temperature and pressure at which the normally-gaseous material is in a liquid or supercritical fluid form. Treating a crude product including released reinforcing fibers and residual material of the matrix and/or fiber sizing includes first converting a normally-gaseous substance from a fluid form to a solid form and thereafter second converting the solid form to a gaseous form, to assist dislodgment of such residual material. 1. A method for processing a composite including reinforcing fibers held in a matrix of a plastic material or precursor for a plastic material for recovery of the reinforcing fibers , the method comprising:first treating the fiber-reinforced composite with a normally-liquid first solvent for material of the matrix to prepare a first treated solid residue comprising the reinforcing fibers, the first treating comprising contacting the fiber-reinforced composite with the first solvent and first dissolving at least a majority by weight of the matrix into the first solvent; andafter the first treating, second treating at least a portion of the first treated solid residue comprising the reinforcing fibers with a second solvent of normally-gaseous material, having a different composition than the first solvent, to prepare second treated solid residue, the second treating comprising contacting the at least a portion of the first treated solid residue with the normally-gaseous material under conditions of temperature and pressure at which the normally-gaseous material is in a form of a liquid or supercritical fluid; andwherein:the normally-liquid first solvent is in the form of a liquid when at ...

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 ...

METHOD FOR RECOVERING WATER-SOLUBLE POLYESTER RESIN FROM DISSOLVED SUPPORT MATERIAL EFFLUENT

The present invention is a three-dimensional-modeling soluble material to be used as a material of a support member for supporting a three-dimensional object when the three-dimensional object is produced with a 3D printer that employs a fused deposition modeling method. The three-dimensional-modeling soluble material contains a polyester resin comprising: an aromatic dicarboxylic acid monomer unit A having a sulfonic acid base; a dicarboxylic acid monomer unit B that does not have a sulfonic acid base; and a diol monomer unit, wherein the proportion of the aromatic dicarboxylic acid monomer unit A in the total of all dicarboxylic acid monomer units is 10 to 70 mol %. The present invention can provide a three-dimensional-modeling soluble material to be used for a support member, which material is suitable for production of a three-dimensional object by the FDM method, has moisture-absorption resistance, has a high rate of dissolution in neutral water, and can be quickly removed from a three-dimensional object precursor without using a strong alkali aqueous solution. 1. A method for recovering a water-soluble polyester resin contained in a support material from an effluent in which the support material is dissolved and/or dispersed that is generated when a precursor of a three-dimensional object containing a three-dimensional object and a support material is brought into contact with an aqueous cleaning agent to remove the support material from the precursor of a three-dimensional object in a manufacturing process of a three-dimensional object by fused deposition modeling , comprising:{'sup': '3', 'a metal salt addition step of adding, to the effluent, at least one metal salt selected from the group consisting of a calcium salt, a magnesium salt, a sodium salt, a potassium salt, an aluminum salt, and an iron salt and selected from the group consisting of metal salts having a solubility in water of 1 g/100 cmor more;'}a water-soluble polyester resin precipitation step ...

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 ...

PROCESSES FOR RECYCLING POLYSTYRENE WASTE

There is provided a composition for the production of a recycled polystyrene. The composition comprises polystyrene, ethylbenzene and a non-solvent having a boiling point at 1 atm of pressure of from 98° C. to 110° C. There is also provided a method of using ethylbenzene and a non-solvent having a boiling point at 1 atm of pressure of from 98° C. to 110° C. The method comprises mixing together the ethylbenzene, the non-solvent and polystyrene for recycling the polystyrene. 1. A composition for the production of a recycled polystyrene , wherein said composition comprises polystyrene , ethylbenzene and a non-solvent having a boiling point at 1 atm of pressure of from 98° C. to 110° C.2. The composition of claim 1 , wherein said non-solvent is heptane.3. A method of using ethylbenzene and a non-solvent having a boiling point at 1 atm of pressure of from 98° C. to 110° C. claim 1 , said method comprises mixing together said ethylbenzene claim 1 , said non-solvent and polystyrene for recycling said polystyrene.4. The method of claim 3 , wherein said method comprises dissolving polystyrene into the ethylbenzene and precipitating polystyrene as a paste into said non-solvent.5. The method of claim 4 , wherein precipitation of polystyryene is carried out at the boiling point of said non-solvent.6. The method of claim 5 , wherein said non-solvent is heptane.7. The method of claim 6 , wherein polystyrene is precipitated from a mixture comprising said ethylbenzene claim 6 , heptane and polystyrene and being at a temperature of about 98° C.8. A method of using ethylbenzene and heptane claim 6 , said method comprises mixing together said ethylbenzene claim 6 , said heptane at a temperature of about 98° C. and polystyrene to obtain a mixture for recycling said polystyrene claim 6 , and precipitating polystyrene as a paste into said heptane.9. The method of claim 8 , wherein said method comprises dissolving polystyrene into ethylbenzene and precipitating polystyrene as a paste into ...

Process for recovering sulfopolyester

The present disclosure provides a process of recovering sulfopolyester comprising reduced impurity. Sulfopolyester is recovered from a composite material comprising water-dispersible sulfopolyester polymer and at least one non-water-dispersible polymer. The process includes washing the composite material comprising water-dispersible sulfopolyester with a solvent composition. The recovered sulfopolyester can be generated as a concentrated aqueous dispersion, a polymer melt, or a sulfopolyester solid.

METHOD AND APPARATUS FOR RECOVERING REINFORCEMENT FIBERS FROM FIBER-REINFORCED PART

Disclosed is a method of recovering reinforcement fibers from a fiber-reinforced part that includes the reinforcement fibers and is impregnated with resin. The method includes unwinding the reinforcement fibers from the fiber-reinforced part, dissolving the resin impregnated in the fiber-reinforced part, coating the resin-free reinforcement fiber with a sizing agent, and winding the sizing agent-coated reinforcement fibers around a mandrel. 1. A method of recovering reinforcement fibers from a fiber-reinforced part , the method comprising:unwinding reinforcement fibers from a fiber-reinforced part, wherein the fiber-reinforced part includes the reinforcement fibers and is impregnated with a resin;coating the unwound reinforcement fibers with a sizing agent by passing the unwound reinforcement fibers through the sizing agent; andwinding the sizing agent-coated reinforcement fibers around a mandrel.2. The method according to claim 1 ,wherein the unwinding includes:swelling the resin by dipping the fiber-reinforced part in a swelling agent;dissolving the resin by passing the unwound reinforcement fibers through a dissolving agent as unwinding the reinforcement fibers from the fiber-reinforced part; andwinding the resin-free reinforcement fibers using an intermediate winder.3. The method according to claim 2 , wherein the swelling agent is a weak acid.4. The method according to claim 2 , wherein the dissolving agent comprises a hydrogen peroxide solution and an ionic liquid.5. The method according to claim 2 , wherein a tension of the reinforcement fibers wound by the intermediate winder is greater than a tension of the reinforcement fibers wound around the mandrel.6. The method according to claim 1 , wherein the sizing agent comprise one or more resins selected from the group consisting of epoxy resin claim 1 , polyurethane resin claim 1 , polyester resin claim 1 , polyamide resin claim 1 , and nylon resin.7. An apparatus for recovering reinforcement fibers from a ...

RECOVERED SULFOPOLYESTER

The present disclosure provides a process of recovering sulfopolyester comprising reduced impurity. Sulfopolyester is recovered from a composite material comprising water-dispersible sulfopolyester polymer and at least one non-water-dispersible polymer. The process includes washing the composite material comprising water-dispersible sulfopolyester with a solvent composition. The recovered sulfopolyester can be generated as a concentrated aqueous dispersion, a polymer melt, or a sulfopolyester solid. 1. A recovered sulfopolyester dispersion comprising recovered sulfopolyester and a solvent composition; wherein the dispersion comprises 0.01 wt % to 5 wt % impurities , relative to the total weight of the recovered sulfopolyester dispersion.2. A pre-washed recovered sulfopolyester dispersion comprising recovered sulfopolyester and solvent composition; wherein the dispersion has a reduced impurity concentration of at least 80% or more as compared to non-prewashed recovered sulfopolyester dispersion.3. A pre-washed recovered sulfopolyester dispersion comprising recovered sulfopolyester and a solvent composition; wherein the dispersion has an impurity level ranging from 0.01% to 5%.5. The dispersion of claim 1 , wherein the recovered sulfopolyester has a glass transition temperature (Tg) of 25° C. to 120° C.6. The dispersion of claim 1 , wherein the recovered sulfopolyester comprises:residues of one or more dicarboxylic acids;4 to 40 mole %, based on the total repeating units, of residues of at least one sulfomonomer comprising two functional groups and one or more sulfonate groups attached to an aromatic or cycloaliphatic ring wherein the functional groups are hydroxyl, carboxyl, or a combination thereof; and{'sub': 2', '2', 'n, 'one or more diol residues ranging from 10 to 100% mole, based on the total diol residues, is a poly(ethylene glycol) having the structure H(OCHCH)OH, wherein n is an integer in the range of 2 to 500 4; and 0 to 25 mole %, based on the total ...

METHOD FOR SEPARATING AND RECOVERING LAYERED FILM

A method for separating and recovering a layered film laminated and adhered with an adhesive, the method including a step 1 of immersing the layered film in a morpholine solution having a morpholine concentration of 50% by mass or more while stirring the layered film with heating at 20° C. to 90° C. or ultrasonically vibrating the layered film and a step 2 of recovering separated single-layered films that constitute the respective layers of the layered film. The adhesive is preferably a reactive adhesive containing a polyisocyanate composition and a polyol composition. 1. A method for separating and recovering a layered film laminated and adhered with an adhesive , the method comprising:a step 1 of immersing the layered film in a morpholine solution haying a morpholine concentration of 50% by mass or more while stirring the layered film with heating at 20° C. to 90° C. or ultrasonically vibrating the layered film, anda step 2 of recovering separated single-layered films that constitute the respective layers of the layered film.2. The method for separating and recovering a layered film according to claim 1 ,wherein the adhesive is a reactive adhesive containing a polyisocyanate composition and a polyol composition.3. The method for separating and recovering a layered film according to claim 1 ,wherein the layered film has a printing ink layer. The present invention relates to a method for recycling a resin film laminated by a laminating method using an adhesive.In recent years, the recycling of plastic container packaging has been made obligatory, and thus plastic waste including plastic waste for food packaging has been recovered, classified, and reused.There are a variety of types of plastic waste, and examples thereof include a lot of plastic waste made of a synthetic resin such as polyethylene, polypropylene, polystyrene (foamed polystyrene), polyethylene terephthalate, or polyvinyl chloride and a number of layered films obtained by laminating films of the ...

Method and apparatus for recovering fiber assembly from thermosetting resin composite materials and recovered fiber assembly thereby

Disclosed are a method and an apparatus for recovering a fiber assembly by decomposing a thermosetting resin composite material, such as carbon fiber reinforced plastic (CFRP) in such a manner the fiber assembly used for the thermosetting composite material, such as CFRP, retains its original organizational shape after decomposition, and a fiber assembly recovered by the method.

Method For Purifying Reclaimed Polypropylene

A method for purifying a reclaimed polyethylene is provided. The method involves obtaining reclaimed polyethylene, contacting it with a first fluid solvent to produce an extracted reclaimed polyethylene then dissolving the extracted reclaimed polyethylene in a solvent to produce a first solution comprising polyethylene and suspended contaminants. The first solution is settled to produce a second solution comprising polyethylene and remaining contaminants. The second solution is purified by contacting the second solution with solid media to produce a third solution comprising purer polyethylene. Finally, the purer polyethylene is separated from the third solution.

SEPARATION AND COLLECTION APPARATUS OF PLASTIC-BASED COMPLEX WASTE

The present invention provides a separation and collection apparatus of plastic-based complex waste in which plastic-based complex waste is separated into a floating plastic component, a dissolving plastic component, and a sinking component and collected, wherein a glycol is reacted with the dissolving plastic component to make a melt in a dissolution and separation reservoir thereby plastic-based complex waste is separated into a floating plastic component A, a dissolving plastic component B, and a sinking component C. 1. A method for separating a plastic-based complex waste into a floating plastic component , a dissolving plastic component , and a sinking component by using a separating agent and collecting each of plastic components separately from the separating agent , comprising:l) a dissolution and separation step for making a melt as the separating agent obtained by reacting a glycol with the dissolving plastic component, and then separating the plastic-based complex waste to be added therein into a floating plastic component which floats on the separating agent, a dissolving plastic component which dissolves in the separating agent, and a sinking component including a plastic component and a non-plastic-based component which sink in the separating agent using separating agent at a high-temperature and a normal pressure;m) a floating plastic component-receiving step for receiving the floating plastic component from the dissolution and separation reservoir and supplying the floating plastic component as a pellet raw material and/or a petrochemical raw material;n) a transferring step for transferring the floating plastic component toward an extraction portion in the dissolution and separation reservoir;o) a separating agent-receiving step for extracting the dissolving plastic component and the separating agent from the dissolution and separation reservoir;p) a heating step for heating the separating agent to a predetermined temperature range in a separating ...

Method for Recovering Aluminum from Multilayered Packaging Utilizing Sonication and Formic Acid

The process disclosed herein is method of recovering aluminum from multilayered packaging. The process comprises subjecting multilayered packaging to a reactor with aqueous formic acid, wherein the solution is sonicated using sonic horns. This process allows the recovery of aluminum in its pure metal form. PP/PE components of the multilayered packaging are recovered utilizing density separation, while ink and PET components require further treatment in a toluene reactor which may include sonication. 1. A method of recovering aluminum from multilayered packaging comprising:shredding multilayered packaging with a mechanical shredder until the multilayered packaging is reduced to small fragments,subjecting the small fragments to an aqueous solution of formic acid, wherein the aqueous solution is maintained at a minimum temperature of 25 degrees Celsius and a maximum temperature of 75 degrees Celsius,subjecting the aqueous solution of formic acid containing the small fragments to sonication until aluminum separates from the small fragments as pure aluminum metal, andfiltering the pure aluminum metal from the aqueous solution of formic acid utilizing density separation.2. The method of wherein a sonic horn producing sonic waves at 250 watts provides the sonication.3. The method of wherein the small fragments have a maximum width of 1 cm and a maximum length of 2 cm.4. A method of recovering polypropylene or polyethylene from multilayered packaging comprising:shredding multilayered packaging with a mechanical shredder until the multilayered packaging is reduced to small fragments,subjecting the small fragments to an aqueous solution of formic acid, wherein the aqueous solution is maintained at a minimum temperature of 25 degrees Celsius and a maximum temperature of 75 degrees Celsius,subjecting the aqueous solution of formic acid containing the small fragments to sonication until aluminum separates from the small fragments as pure aluminum metal, andfiltering the ...

METHOD FOR RECYCLING POLYOLEFIN CONTAINING WASTE

The invention refers to a method for recycling polyolefin containing waste by using a solvent with a specific Hansen parameter and contacting this mixture with a liquid filtration aid before separating the polyolefm from the mixture. The method comprises the following steps: Mixing the polyolefm containing waste with a solvent having a Hansen parameter δfrom 0.0 to 3.0 M Pa; Contacting this mixture with a liquid filtration aid having a Hansen parameter δ>4.0 M Pa; and Separating the polyolefin from the mixture. 115-. (canceled)16. A method for recycling a polyolefin containing waste comprising the following steps:{'sub': 'H', 'sup': '1/2.', 'a) mixing the polyolefin containing waste with a solvent having a Hansen parameter δfrom 0.0 to 3.0 MPa;'}{'sub': 'H', 'sup': '1/2.', 'b) contacting the mixture from a) with a liquid filtration aid having a Hansen parameter δ>4.0 MPa; and'}c) separating the polyolefin from the mixture.17. The method according to claim 16 , wherein the polyolefin is selected from the group consisting of PE claim 16 , PP claim 16 , LDPE claim 16 , HDPE claim 16 , LLDPE claim 16 , and mixtures thereof.18. The method according to claim 16 , wherein the solvent is selected from the group consisting of hydrocarbon compounds.19. The method according to claim 18 , wherein the hydrocarbon compounds are aliphatic hydrocarbon compounds.20. The method according to claim 19 , wherein the aliphatic hydrocarbon compounds are cyclo claim 19 , linear claim 19 , or branched aliphatic hydrocarbon compounds.21. The method according to claim 16 , wherein the liquid filtration aid contains at least one fluid with a Hansen-parameter δfrom 4.0 to 38.0 MPa'.22. The method according to claim 21 , wherein the liquid filtration aid forms a miscibility gap with the solvent.23. The method according to claim 16 , wherein the liquid filtration aid is at least one fluid selected from the group consisting of mono-/poly-hydroxy hydrocarbons with 2 to 12 carbon atoms.24. The ...

Facility for separating layers in multilayer systems

A facility 300 for separation of layers in a multilayer system 310. The facility 300 comprises one or more baths 320a, 320b for accepting the multilayer system 310 and a dispenser 330 for providing a separation fluid 340. The separation fluid 340 comprises a nanoscale dispersion for washing the multilayer system in the baths 320a, 320b and is described in more details below. The facility 300 also includes a filtration device 350 for filtering separated undissolved components of the multilayer system 310.

METHOD AND DEVICE FOR DISMANTLING MULTILAYER SYSTEMS INCLUDING AT LEAST ONE ORGANIC COMPONENT

Method and device for delamination/dismantling of multi-layer systems SM comprising several layers including at least one organic layer, wherein the layers are separated by interfaces, characterized in that it comprises at least the following steps: 1. A method of delamination/dismantling multilayer systems SM comprising several layers including at least one organic layer , wherein the layers are separated by interfaces , wherein it comprises at least the following steps:mixing the multilayer system with a fluid comprising at least one gas having the particularity of causing the swelling of at least one of the layers and one or more non-reactive liquids having the particularity of allowing the separation of each layer unitarily or of subsets of layers composing the multilayer system without degradation of the constituents of the layers, the gas/liquid fluid being raised in temperature and pressure, and.recovering separately at least one or more layers or a subset of undegraded layers.2. The method according to claim 1 , wherein the value of the treatment temperature Tr is chosen to be greater than the critical temperature Tc of the gas claim 1 , and lower than the degradation temperature Tg of the layers of the multilayer system claim 1 , the treatment pressure value Pr is chosen to be higher than the critical pressure Pc of the gas and the volume proportion of a mixture of liquids with respect to the gas is at least 15%.3. The method according to claim 1 , wherein it is operated with a temperature between 30° C. and 150° C. and a pressure between 5 MPa and 50 MPa.4. The method according to claim 1 , wherein the fluid is a mixture of CO/water/acetone with a proportion of water relative to acetone ranging from 0 to 100%.5. The method according to claim 4 , wherein the temperature lies between 60° C. and 130° C.6. The method according to claim 1 , wherein the multilayer system is a photovoltaic module comprising a fluorinated layer claim 1 , a packaging claim 1 , a ...

Processing device and processing method of fiber containing resin

A processing method according to the present embodiment is a processing method of a fiber containing resin in which fibers are contained in a matrix resin. The processing method includes: a step of thermal decomposition of the matrix resin in the fiber containing resin; and a step of stirring a resulting fibers bundle in solvent after the thermal decomposition. At the time of the thermal decomposition, the matrix resin may be carbonized in a dry distillation-carbonization furnace, for example.

METHOD AND EQUIPMENT FOR EXTRACTING CARBON MATERIALS FROM PLASTICS

The invention provides a method and equipment for extracting carbon materials from plastics. Particularly, the method produces nanostructured carbon materials by heating of at least one salt (e.g., NaCl) and at least one plastic material (e.g.polyethylene terephthalate) to a temperature greater than the melting point of the said salt, in which molten state of the said salt protects the carbonaceous material from oxidation. Moreover, molten salt promotes the graphitization of carbon materials. The product is in the form of graphenenano-flakes with high conductivity and high surface area. This method provides a simple, economical and efficient approach for producing conductive carbon materials. It also has a significant positive impact on the environment through the transformation of virtually non-degradable plastic wastes into high-value conductive carbon materials. 1. A method for extracting carbon materials from plastics , wherein nanostructured carbon materials are produced by heating a mixture consisting of at least one plastic and at least one metal halide salt to a heating temperature in the range defined as: the melting point of the salt≤heating temperature≤the boiling point of the salt+50° C.2. The method for extracting carbon materials from plastics according to claim 1 , wherein the salt is a hydrated metal halide salt.3. The method for extracting carbon materials from plastics according to claim 1 , wherein the heating temperature is above the melting point of the metal halide salts claim 1 , and less than the boiling temperature of the salts claim 1 , by which a mixture of nanostructured carbon materials and salts is produced; after the mixture is cooled down claim 1 , the salts are dissolved by water followed by filtration to retrieve the nanostructured carbon materials and the solution of the water and the salts; the nanostructured carbon materials are collected after drying and the salts are recycled from the solution.4. The method for extracting ...

MOLDED ARTICLE, CONTAINER AND A METHOD FOR THE MOLDING AND RECYCLING THEREOF

Disclosed herein, amongst other things, is a molded article, such as a preform that is blow moldable to form a container, and a related method of forming and recycling a container. The structure and steps includes injection molding a molded article having tubular body. 1. A molded article for providing a container the molded article comprising:a body configurable to define a storage vessel of the container;the body is formed from a first thermoplastic that is stable in contact with water and from a second thermoplastic that is unstable in contact with water;wherein the second thermoplastic carries an additive therein.2. The molded article of claim 1 , wherein the body is a preform at least portion of which is re-moldable to define the container.3. The molded article of claim 2 , wherein the body of the preform is one of hollow or a solid block claim 2 , at least in part.4. The molded article of claim 3 , wherein one or more surfaces of the hollow body are one or more of cylindrical claim 3 , conical claim 3 , rectangular or ovoid in shape.5. The molded article of claim 3 , wherein the surfaces of the hollow body are one of concentric or non-concentric for remolding into the container having an offset neck.6. The molded article of claim 3 , wherein the body further includes an open end and a closed end.7. The molded article of claim 6 , wherein the open end defines a neck portion and the closed end defines a base portion claim 6 , wherein the neck portion is configured to define a neck part of the container and is also configured to be capped to enclose a volume defined within the container claim 6 , the body portion and the base portion are blow moldable to provide a body part and a base part of the container claim 6 , respectively.8. The molded article of claim 3 , wherein the preform includes a neck portion having a wide mouth and a body portion that is conical.9. The molded article of claim 3 , wherein the preform is configured for blow and trim molding into the ...

Processes for recycling polystyrene waste

There are provided processes for recycling polystyrene waste. The processes can comprise dissolving said polystyrene waste in ethylbenzene under conditions to obtain a polystyrene/ethylbenzene mixture, adding the polystyrene/ethylbenzene mixture to a hydrocarbon polystyrene non-solvent under conditions to obtain precipitated polystyrene and washing the precipitated polystyrene with additional portions of hydrocarbon polystyrene non-solvent under conditions to obtain twice-washed polystyrene. The twice-washed polystyrene can optionally be dried and formed into polystyrene pellets. There is also provided recycled polystyrene obtained from such processes for recycling polystyrene waste.

Heat and Energy Integrated Continuous Process for Plastic Waste Recovery

Improvements relate to a heat and energy integrated method and apparatus for plastic waste recovery having supercritical liquefaction. A volume of plastic waste is processed to produce a plastic waste stream. A reaction unit is utilized for adsorbing the plastic with a solvent having at least water, plus heating and pressurizing the plastic waste stream with the solvent into a supercritical extraction state for converting the plastic waste stream into a mixture fluid stream of a supercritical nature within the reaction unit. The mixture fluid stream may be cycled proximate to the outlet from the reaction unit via periodically letting the pressure down, and then letting the pressure recover. A volume of inert solids are removed from the mixture fluid stream thereby creating a remaining combined gases and liquids fluid stream. Power is recovered from the remaining combined gases and liquids fluid stream. And, volumes of water, gas and oil are separated from the combined gases and liquids fluid stream.

PROCESS FOR FABRICATION OF PAINTS BASED ON EXPANDED POLYSTYRENE (EPS) WASTE

The invention is related with the paint industry to use on surfaces of solid materials. The invention is a process to obtain paints using expanded polystyrene (EPS) waste as a raw material. From this technology we pursue to transform a waste into a useful product, saving resources and at the same time contributing to solve environmental contamination problems. This invention is composed by the following stages, a.-mixing the EPS waste with an organic solvent until reaching a concentration between 20% and 80% p/p; decanting impurities of the mixture obtained in stage (a) during 24 to 120 h; c.-collecting the supernatant obtained in stage (b); d.-dispersing a pigment in the supernatant obtained in stage (c) during 10 to 30 min at a velocity between 1.000 rpm and 2.000 rpm; e.-mixing the substance obtained in stage (d) with an organic solvent at a velocity between 300 rpm and 1.000 rpm until reaching the desired concentration. Additionally, the invention claims the formulation of a paint that is formed by 0% to 40% of pigment, 70% to 1% of EPS, 0.5% to 5.0% of dispersant, and the difference is solvent. 1. Process to fabricate paints from expanded polystyrene (EPS) waste , wherein it has the following stages:a. Mixing the EPS waste with an organic solvent until reaching a mixture with a concentration between 20% and 80% p/p;b. Decanting impurities of the mixture obtained in stage (a) during 24 to 120 h;c. Collecting the supernatant obtained in stage (b);d. Dispersing a pigment in the supernatant obtained in stage (c) during 10 to 30 min at a velocity between 1.000 rpm and 2.000 rpm;e. Mixing the substance obtained in stage (d) with an organic solvent at a velocity between 300 rpm and 1.000 rpm until reaching the desired concentration.2. Process to fabricate paints claim 1 , according to claim 1 , wherein the organic solvent in stage (a) is selected among ketones up to 11 saturated carbon atoms claim 1 , esters up to 11 saturated carbon atoms claim 1 , substituted ...

METHOD OF SEPARATING INORGANIC MATERIAL, METHOD OF PRODUCING REPROCESSED MATERIAL AND METHOD OF REMOVING ORGANIC SUBSTANCE

A method of separating an inorganic material, the method comprising in the following order: a contact process of contacting a processing solution with a composite material, the composite material including a first organic substance that is decomposable by the processing solution, a second organic substance that is not decomposable by the processing solution, and an inorganic material; and a separation process of separating the inorganic material from the processing solution including a decomposition product of the first organic substance and the second organic substance, the contact process and the separation process including adjusting the processing solution to have a temperature that is equal to or greater than a softening point of the second organic substance. 1. A method of separating an inorganic material , the method comprising in the following order:a contact process of contacting a processing solution with a composite material, the composite material including a first organic substance that is decomposable by the processing solution, a second organic substance that is not decomposable by the processing solution, and an inorganic material; anda separation process of separating the inorganic material from the processing solution including a decomposition product of the first organic substance and the second organic substance,the contact process and the separation process including adjusting the processing solution to have a temperature that is equal to or greater than a softening point of the second organic substance.2. The method of separating an inorganic material of claim 1 , further comprising claim 1 , after the separation process claim 1 , an additional contact process of contacting an additional processing solution with the inorganic material claim 1 , and an additional separation process of separating the inorganic material from the additional processing solution.3. The method of separating an inorganic material of claim 1 , wherein the first organic ...

ORGANIC MATERIAL REMOVING DEVICE

An organic material removing device includes: a container for storing a composite material containing an inorganic material and an organic material decomposable by a treatment liquid; a treatment tank including an accommodation portion for accommodating the container, a treatment liquid inflow portion for allowing the treatment liquid to flow in, and a treatment liquid outflow portion for allowing the treatment liquid to flow out; temperature control means for heating or cooling the treatment liquid; and a treatment liquid circulation means for allowing the treatment liquid to flow in from the treatment liquid inflow portion into the treatment tank and allowing the treatment liquid in the treatment tank to flow out from the treatment liquid outflow portion. 1. An organic material removing device comprising:a container for storing a composite material containing an inorganic material and an organic material decomposable by a treatment liquid;a treatment tank including an accommodation portion for accommodating the container, a treatment liquid inflow portion for allowing the treatment liquid to flow in, and a treatment liquid outflow portion for allowing the treatment liquid to flow out;a temperature controller configured to heat or cool the treatment liquid; anda treatment liquid circulator configured to allow the treatment liquid to flow in from the treatment liquid inflow portion into the treatment tank and to allow the treatment liquid in the treatment tank to flow out from the treatment liquid outflow portion.2. The organic material removing device according to claim 1 , wherein the treatment liquid inflow portion is provided on a lower side in a vertical direction with respect to the accommodation portion of the treatment tank claim 1 , and the treatment liquid outflow portion is provided on an upper side in the vertical direction with respect to the accommodation portion of the treatment tank.3. The organic material removing device according to claim 1 , ...

Method For Purifying Reclaimed Polymers

A method for purifying a reclaimed polymer is disclosed. In one embodiment, the method involves obtaining reclaimed polymer, contacting the reclaimed polymer with a first fluid solvent to produce an extracted reclaimed polymer; then dissolving the extracted reclaimed polymer in a solvent to produce a first solution comprising polymer. The first solution is settled and then filtered. A purer polymer is separated from the resulting solution.

METHOD FOR RECYCLING DROPLETED POLYSTYRENE RESIN

Methods and systems for recycling carpet and carpets manufactured from recycled material

The present invention pertains to carpet and methods of making and recycling carpet. In one aspect, the carpet includes: a primary backing which has a face and a back surface; a plurality of fibers attached to the primary backing and extending from the face of the primary backing and exposed at the back surface of the primary backing; an adhesive composition backing; and an optional secondary backing adjacent to the adhesive backing. The method of making carpet includes extrusion coating the adhesive composition onto the back surface of a primary backing to form the adhesive composition backing. The method of recycling carpet can recover one or more polymeric carpet components.

Methods and systems for recycling carpet and carpets manufactured from recycled material

The present invention pertains to carpet and methods of making and recycling carpet. In one aspect, the carpet includes: a primary backing which has a face and a back surface; a plurality of fibers attached to the primary backing and extending from the face of the primary backing and exposed at the back surface of the primary backing; an adhesive composition backing; and an optional secondary backing adjacent to the adhesive backing. The method of making carpet includes extrusion coating the adhesive composition onto the back surface of a primary backing to form the adhesive composition backing. The method of recycling carpet can recover one or more polymeric carpet components.

Methods and systems for recycling carpet and carpets manufactured from recycled material

The present invention pertains to carpet and methods of making and recycling carpet. In one aspect, the carpet includes: a primary backing which has a face and a back surface; a plurality of fibers attached to the primary backing and extending from the face of the primary backing and exposed at the back surface of the primary backing; an adhesive composition backing; and an optional secondary backing adjacent to the adhesive backing. The method of making carpet includes extrusion coating the adhesive composition onto the back surface of a primary backing to form the adhesive composition backing. The method of recycling carpet can recover one or more polymeric carpet components.

Methods and systems from recycling carpet and carpets manufactured from recycled material

The present invention pertains to carpet and methods of making and recycling carpet. In one aspect, the carpet includes: a primary backing which has a face and a back surface; a plurality of fibers attached to the primary backing and extending from the face of the primary backing and exposed at the back surface of the primary backing; an adhesive composition backing; and an optional secondary backing adjacent to the adhesive backing. The method of making carpet includes extrusion coating the adhesive composition onto the back surface of a primary backing to form the adhesive composition backing. The method of recycling carpet can recover one or more polymeric carpet components.

Methods and systems for recycling carpet and carpets manufactured from recycled material

METHOD OF RECYCLING CARBON FIBER

Provided is a method of recycling carbon fibers that allows obtaining continuous carbon fibers. The present embodiment is a method of recycling carbon fibers that includes preparing a carbon fiber reinforced plastic molded product including carbon fiber reinforced plastic containing carbon fibers and a resin and drawing the carbon fiber reinforced plastic while performing a heating treatment on the carbon fiber reinforced plastic molded product. A temperature of the heating treatment is equal to or above a glass-transition temperature of the resin and below a thermal decomposition start temperature, and the temperature is below a thermal degradation temperature of the carbon fibers. 1. A method of recycling carbon fibers comprising:preparing a carbon fiber reinforced plastic molded product including a carbon fiber reinforced plastic containing carbon fibers and a resin; anddrawing the carbon fiber reinforced plastic while performing a heating treatment on the carbon fiber reinforced plastic molded product,wherein a temperature of the heating treatment is equal to or above a glass-transition temperature of the resin and below a thermal decomposition start temperature, and the temperature is below a thermal degradation temperature of the carbon fibers.2. The method according to claim 1 ,wherein the thermal decomposition start temperature of the resin is a temperature indicating a 5% weight loss in a weight change chart of a thermogravimetric analysis obtained by raising the temperature of the resin from 30° C. to 550° C. by 5° C./minute under a nitrogen atmosphere.3. The method according to claim 1 ,wherein the thermal decomposition start temperature of the resin is a temperature indicating a 5% weight loss in a weight change chart of a thermogravimetric analysis obtained by raising the temperature of the resin from 30° C. to 550° C. by 5° C./minute under an air atmosphere.4. The method according to claim 1 ,wherein the temperature of the heating treatment is below ...

Method for purification of depolymerized polymers using supercritical fluid extraction

A method for purifying polymers made from depolymerization of plastic can include selecting a polymer for purification, adding the polymer to a reaction vessel with a solvent, heating the mixture to promote migration of contaminants from the polymer to the solvent, performing an extraction technique to remove contaminants, depressurizing the reaction vessel to isolate a purified polymer, and allowing the purified polymer to cool. In some embodiments, the polymer is a polyethylene polymer. In other embodiments, the polymer is a polypropylene polymer. In some embodiments, the polymer is a polystyrene polymer. In some embodiments, the extraction technique is supercritical fluid extraction using supercritical CO 2 as a solvent. Parameters including temperature, pressure, duration, agitation rate, starting solvent volume, and co-solvent addition for supercritical fluid extraction can be selected based on the properties of the polymer to be purified. The method can remove contaminating organic and inorganic compounds from the polymers.

Process for reusing polyvinyl chloride articles

回收地毯的方法和系统以及由回收材料制造的地毯

本发明涉及地毯及制造和回收地毯的方法。一方面，所述地毯包括：一个具有正表面和背表面的主要背衬；大量粘附于主要背衬上、并从主要背衬正表面上伸出且暴露于主要背衬背表面的纤维；一种包括从萜溶剂溶液中回收的回收聚合物的粘合剂组合物背衬；以及一种任选的与所述粘合剂背衬相邻的辅助背衬。所述制造地毯的方法包括将所述粘合剂组合物挤出涂布于主要背衬的背表面上以形成粘合剂组合物背衬。所述回收地毯的方法可通过溶解一种或多种聚合物地毯组分将其回收。

Method and apparatus for decomposition treating article having cured thermosetting resin

There is disclosed a method of decomposition treating a waste article having cured thermosetting resin comprising the steps of: (a) bringing the waste article having cured thermosetting resin into contact with a decomposing fluid containing a solvent, which can decompose the resin, in a decomposition bath and (b) heating the fluid at a temperature not lower than 250° C. and lower than the critical temperature of the solvent. Thereby, a waste article containing cured thermosetting resin is easily decomposed and waste resins and other components therein are recycled and reused as resources.

Process for recycling polyolefin

Recovery of base film from magnetic recording material

无机材料的分离方法、再生材料的制造方法、以及有机物的除去方法

一种无机材料的分离方法，其依次具有如下工序：接触工序，使复合材料与处理液接触，所述复合材料包含通过所述处理液进行分解的第一有机物、通过所述处理液不分解的第二有机物、和无机材料；分离工序，将包含第一有机物的分解物的所述处理液与包含所述无机材料和第二有机物的回收物分离；以及热处理工序，对所述回收物在大于或等于第二有机物消失的温度的温度下进行热处理。

Method for recycling foamed polystyrol resin

A method for recycling a foamed polystyrol resin, which comprises a volume reduction step (110) of reducing the volume of the foamed polystyrol resin, a resolution step (130) of dissolving the foamed polystyrol resin reduced in its volume in a solvent, and a step (160) of subjecting the dissolved foamed polystyrol resin to an extrusion process; and an apparatus for separating a polystyrene solution followed by recovering which is used in the step of subjecting the dissolved foamed polystyrol resin to an extrusion process. The above method allows the minimization of the difficulty of removal of a foreign matter and the decrease of molecular weight due to the heating during an extrusion step in a conventional heat melting method and the discharge of a vaporized solvent accompanied by a gas discharged in a volume reduction step and the loss of the solvent due to the discharge appearing in a conventional method of dissolution into a solvent.

Method for recycling foamed polystyrol resin

Provided are a method for recycling expanded polystyrene, comprising steps of: reducing a volume of the expanded polystyrene 110 ; dissolving the volume-reduced polystyrene in a solvent 130 ; and extruding the dissolved expanded polystyrene 160 ; and a separation and recovery apparatus of a polystyrene solution used in the extruding step. The present invention makes it possible to recycle expanded polystyrene while minimizing the problems of the conventional methods such as difficulty in the removal of foreign matters and the reduction of the molecular weight caused by heating in the extrusion step in the heat melting method, and discharge of the vaporized solvent out of the system together with a gas emitted during the volume-reduction step and the loss of the solvent thereby in the dissolution method.

Method for recycling foamed polystyrol resin

A method for recycling a foamed polystyrol resin, which comprises a volume reduction step (110) of reducing the volume of the foamed polystyrol resin, a resolution step (130) of dissolving the foamed polystyrol resin reduced in its volume in a solvent, and a step (160) of subjecting the dissolved foamed polystyrol resin to an extrusion process; and an apparatus for separating a polystyrene solution followed by recovering which is used in the step of subjecting the dissolved foamed polystyrol resin to an extrusion process. The above method allows the minimization of the difficulty of removal of a foreign matter and the decrease of molecular weight due to the heating during an extrusion step in a conventional heat melting method and the discharge of a vaporized solvent accompanied by a gas discharged in a volume reduction step and the loss of the solvent due to the discharge appearing in a conventional method of dissolution into a solvent.

发泡苯乙烯树脂的回收方法

本发明提供一种发泡苯乙烯树脂的回收方法，可以进行发泡苯乙烯树脂的回收，其可以将以往的热熔融法的除去异物的困难性以及挤压成形工序的加热导致的分子量的降低；伴随使用溶剂溶解法的减容工序中排出气体的气化的溶剂的排出；和与此相伴的损失降低至最小限度，包括对发泡苯乙烯树脂进行减容的减容工序(110)；将经过减容的发泡苯乙烯树脂溶解于溶剂中的溶解工序(130)；和将溶解的发泡苯乙烯树脂挤压成形的工序(160)。此外，提供一种使用于将溶解的发泡苯乙烯树脂挤压成形的工序的苯乙烯树脂溶液分离回收装置。

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Method for recycling expanded styrol resin

发泡苯乙烯树脂的回收方法

本发明提供一种发泡苯乙烯树脂的回收方法，可以进行发泡苯乙烯树脂的回收，其可以将以往的热熔融法的除去异物的困难性以及挤压成形工序的加热导致的分子量的降低；伴随使用溶剂溶解法的减容工序中排出气体的气化的溶剂的排出；和与此相伴的损失降低至最小限度，包括对发泡苯乙烯树脂进行减容的减容工序(110)；将经过减容的发泡苯乙烯树脂溶解于溶剂中的溶解工序(130)；和将溶解的发泡苯乙烯树脂挤压成形的工序(160)。此外，提供一种使用于将溶解的发泡苯乙烯树脂挤压成形的工序的苯乙烯树脂溶液分离回收装置。

Method for recycling foamed polystyrol resin

A method for recycling a foamed polystyrol resin, which comprises a volume reduction step (110) of reducing the volume of the foamed polystyrol resin, a resolution step (130) of dissolving the foamed polystyrol resin reduced in its volume in a solvent, and a step (160) of subjecting the dissolved foamed polystyrol resin to an extrusion process; and an apparatus for separating a polystyrene solution followed by recovering which is used in the step of subjecting the dissolved foamed polystyrol resin to an extrusion process. The above method allows the minimization of the difficulty of removal of a foreign matter and the decrease of molecular weight due to the heating during an extrusion step in a conventional heat melting method and the discharge of a vaporized solvent accompanied by a gas discharged in a volume reduction step and the loss of the solvent due to the discharge appearing in a conventional method of dissolution into a solvent.

Method for recycling foamed polystyrol resin

A method for recycling a foamed polystyrol resin, which comprises a volume reduction step (110) of reducing the volume of the foamed polystyrol resin, a resolution step (130) of dissolving the foamed polystyrol resin reduced in its volume in a solvent, and a step (160) of subjecting the dissolved foamed polystyrol resin to an extrusion process; and an apparatus for separating a polystyrene solution followed by recovering which is used in the step of subjecting the dissolved foamed polystyrol resin to an extrusion process. The above method allows the minimization of the difficulty of removal of a foreign matter and the decrease of molecular weight due to the heating during an extrusion step in a conventional heat melting method and the discharge of a vaporized solvent accompanied by a gas discharged in a volume reduction step and the loss of the solvent due to the discharge appearing in a conventional method of dissolution into a solvent.

METHOD FOR RECYCLING COATED PLASTIC MOLDED BODIES

Method for recycling polyethylene terephthalate (PET) beverage bottles by treating with carbon dioxide

A method for recycling polyethyleneterephthalate beverage bottles comprises the removal of the contaminants with the use of supercritical carbon dioxide. The recycled material is placed in an autoclave and treated with carbon dioxide at a temperature greater than 31° C. and a pressure greater than 50 bars.

Method for the production of a polypropylene blend

A method for producing a polypropylene blend from a plastic packaging materials containing high molecular weight polypropylene, other high molecular weight polymers such as polyethylene, low molecular weight polymers and other contaminants. The method includes extraction, solid-liquid separation and liquid-liquid phase separation using various organic solvents. The polypropylene blend has a purity of 95% and has favorable melt flow characteristics, while retaining satisfactory mechanical properties.

Method for the production of a polypropylene blend

A method for producing a polypropylene blend from a plastic packaging materials containing high molecular weight polypropylene, other high molecular weight polymers such as polyethylene, low molecular weight polymers and other contaminants. The method includes extraction, solid-liquid separation and liquid-liquid phase separation using various organic solvents. The polypropylene blend has a purity of 95% and has favorable melt flow characteristics, while retaining satisfactory mechanical properties.

Purification of polycarbonate, polyester carbonate or polyester waste

A process for the purification of waste of thermoplastic resins containing at least one member selected from among aromatic polycarbonates, aromatic polyester carbonates and aromatic polyesters and at least one of aluminum, lacquers and dyes which waste accumulates in the production of optical moldings is disclosed. The process which entails size reduction of the waste, chemical wash and filtering steps yields purified resins suitable for thermoplastic processing.

Purification of polycarbonate polyester carbonate or polyester waste

含纤维树脂的处理装置和处理方法

本发明涉及含纤维树脂的处理装置和处理方法。根据本实施方式的处理方法是在基体树脂中包含有纤维的含纤维树脂的处理方法。该处理方法包括：使所述含纤维树脂中的基体树脂热分解的工序；以及在热分解之后在溶剂中搅拌所得到的纤维束的工序。在热分解时，可使所述基体树脂例如在干馏碳化炉(101)中碳化。

Degradable polymers

Some embodiments provided herein relate to a thermoplastic material that can include a thermoplastic surface, a protective coating, and a degradable intermediate layer.

Separation procedure of an interleaving film

Un procedimiento de separación de película de intercalación para separar una película de intercalación (13) y placas de vidrio (11, 12) que intercalan la película de intercalación (13) entre ambas en un vidrio laminado (10), comprendiendo el procedimiento de separación de película de intercalación: una etapa de proceso de troceado para trocear las placas de vidrio (11, 12) en el vidrio laminado; una etapa de inmersión del vidrio laminado con las placas de vidrio (11, 12) troceadas en una solución (21) de separación de película de intercalación para separar la película de intercalación (13) y las placas de vidrio (11, 12), teniendo la solución (21) de separación de película de intercalación capacidad de ataque químico respecto a las placas de vidrio; y una etapa de provisión de un impacto para impartir un impacto al vidrio laminado como fuerza externa mediante la introducción del vidrio laminado con las placas de vidrio troceadas en un tambor (23) y haciendo girar el tambor. A method of separating interleaving film to separate an interleaving film (13) and glass plates (11, 12) that interleaving the intercalation film (13) between them in a laminated glass (10), the separation method comprising interleaving film: a cutting process step for cutting the glass plates (11, 12) into the laminated glass; a dip stage of the laminated glass with the glass plates (11, 12) cut into an intercalation film separation solution (21) to separate the intercalation film (13) and the glass plates (11, 12), having the intercalation film separation solution (21) chemical attack capacity with respect to the glass plates; and a step of providing an impact to impart an impact to the laminated glass as an external force by introducing the laminated glass with the sliced glass plates in a drum (23) and rotating the drum.

Interlayer film separation method

There are provided an interlayer film separation solution and an interlayer film separation method capable of separating an interlayer film and a glass for a short period of time and collecting the separated interlayer film in a recyclable condition. An interlayer film separation solution 21 having etching ability for a glass is introduced into a container 22 , and the introduced interlayer film separation solution 21 was controlled to a temperature of 30 to 60° C., and a laminated glass 10 with glass plates 11, 12 crushed is introduced into a barrel 23 from a lid portion 23 a , and simultaneously, 50 to 60 metal pieces 25 are, introduced into the barrel 23 from the lid portion 23 a in order to easily separate the laminated glass 10 into the glass plates 11, 12 and an interlayer film 13 . The barrel 23 containing the laminated glass 10 and the metal pieces 25 introduced thereinto is rotated at a predetermined rotational speed.

Degradable polymers

Some embodiments provided herein relate to a thermoplastic material that can include a thermoplastic surface, a protective coating, and a degradable intermediate layer.

Bottle excellent in recyclability and method for recycling the bottle

There are provided a bottle which has a laminate structure including a glycolic acid polymer layer showing good gas-barrier property in addition to a principal resin layer and is yet provided with excellent recyclability, and also an efficient method of recycling the bottle. More specifically, a bottle having a laminate structure including at least one layer of glycolic acid polymer in addition to a principal resin layer, is obtained. After breaking the bottle, the broken pieces are washed with alkaline water, water or acidic water to remove the glycolic acid polymer layer, thereby recovering the principal resin.

Bottle excellent in recyclability and method for recycling the bottle

There are provided a bottle which has a laminate structure including a glycolic acid polymer layer showing good gas-barrier property in addition to a principal resin layer and is yet provided with excellent recyclability, and also an efficient method of recycling the bottle. More specifically, a bottle having a laminate structure including at least one layer of glycolic acid polymer in addition to a principal resin layer, is obtained. After breaking the bottle, the broken pieces are washed with alkaline water, water or acidic water to remove the glycolic acid polymer layer, thereby recovering the principal resin.

Processes for recycling polystyrene waste and/or polystyrene copolymer waste

There are provided processes for recycling waste such as polystyrene thermoplastic polymer waste and/or polystyrene thermoplastic copolymer waste as well as recycled polystyrene thermoplastic polymer and/or recycled thermoplastic copolymer that may, for example, be obtained from such processes. The processes can comprise dissolving the waste in cymene, xylene or ethylbenzene or a suitable solvent, to obtain a mixture followed by heating the mixture under acidic conditions and then optionally neutral conditions in the presence of a reducing agent then cooling to obtain a supernatant comprising polystyrene thermoplastic polymer and/or polystyrene thermoplastic copolymer and a solid waste residue. The supernatant can optionally be treated with a filtration aid, then the supernatant can be contacted with a hydrocarbon polystyrene non-solvent under conditions to obtain precipitated polystyrene thermoplastic polymer and/or precipitated polystyrene thermoplastic copolymer which can be washed with additional hydrocarbon polystyrene non-solvent, and optionally dried and formed into polystyrene thermoplastic polymer pellets and/or polystyrene thermoplastic copolymer pellets.

Processes for recycling polystyrene waste

There are provided recycled polystyrene polymers having a melt flow index of less than about 25 g/10 min. There are provided processes for recycling polystyrene waste. The processes can comprise dissolving said polystyrene waste in p-cymene under conditions to obtain a polystyrene/p-cymene mixture, adding the polystyrene/p-cymene mixture to a hydrocarbon polystyrene non-solvent under conditions to obtain precipitated polystyrene and washing the precipitated polystyrene with additional portions of hydrocarbon polystyrene non-solvent under conditions to obtain twice-washed polystyrene. The twice-washed polystyrene can optionally be dried and formed into polystyrene pellets. There is also provided recycled polystyrene obtained from such processes for recycling polystyrene waste.

Articles of reclaimed polyethylene compositions

An article is disclosed that comprises at least about 95 weight percent reclaimed polyethylene base resin. The base resin comprises less than about 10 ppm Al, less than about 200 ppm Ti, and less than about 5 ppm Zn. The article is substantially free of odor and the base resin has a contrast ratio opacity of less than about 70%.

Reclaimed polyethylene composition

A composition is disclosed that comprises at least about 95 weight percent reclaimed polyethylene. The reclaimed polyethylene comprises less than about 10 ppm Al, less than about 200 ppm Ti, and less than about 5 ppm Zn. The reclaimed polyethylene has a contrast ratio opacity of less than about 70% and the composition is substantially free of odor.

Reclaimed polypropylene composition

A composition is disclosed that comprises at least about 95 weight percent reclaimed polypropylene. The reclaimed polypropylene comprises less than about 10 ppm Al, less than about 5 ppm Ti, and less than about 5 ppm Zn. The reclaimed polypropylene has a contrast ratio opacity of less than about 15% and the composition is substantially free of odor.

Processes for recycling polystyrene waste

약 25 g/10 분 미만의 용융 흐름 지수를 가지는 재생된 폴리스타이렌 중합체가 제공된다. 폴리스타이렌 폐기물 재생 공정이 제공된다. 상기 공정은 폴리스타이렌/p-사이멘 혼합물을 획득하기 위한 조건하에 상기 폴리스타이렌 폐기물을 p-사이멘에 용해시키는 단계, 침전된 폴리스타이렌을 획득하기 위한 조건하에 상기 폴리스타이렌/p-사이멘 혼합물을 탄화수소 폴리스타이렌 비용매에 첨가하는 단계 및 2회-세척된 폴리스타이렌을 획득하기 위한 조건하에 탄화수소 폴리스타이렌 비용매의 추가 부분을 사용하여 침전된 폴리스타이렌을 세척하는 단계를 포함할 수 있다. 2회-세척된 폴리스타이렌은 선택적으로 건조되어 폴리스타이렌 펠렛으로 성형될 수 있다. 또한, 상기 폴리스타이렌 폐기물 재생 공정으로부터 획득된 재생된 폴리스타이렌이 제공된다.

Heat and energy integrated continuous process for plastic waste recovery

Improvements relate to a heat and energy integrated method and apparatus for plastic waste recovery having supercritical liquefaction. A volume of plastic waste is processed to produce a plastic waste stream. A reaction unit is utilized for adsorbing the plastic with a solvent having at least water, plus heating and pressurizing the plastic waste stream with the solvent into a supercritical extraction state for converting the plastic waste stream into a mixture fluid stream of a supercritical nature within the reaction unit. The mixture fluid stream may be cycled proximate to the outlet from the reaction unit via periodically letting the pressure down, and then letting the pressure recover. A volume of inert solids are removed from the mixture fluid stream thereby creating a remaining combined gases and liquids fluid stream. Power is recovered from the remaining combined gases and liquids fluid stream. And, volumes of water, gas and oil are separated from the combined gases and liquids fluid stream.

Process for reducing aldehyde content and low aldehyde content recycled polyolefins

一种用于处理包含至少83.0重量％至小于100重量％的量的聚丙烯和聚乙烯的共混物并进一步包含C7至C11醛类和苎烯的废塑料碎片的方法，该方法包括以下步骤：(a)在处理容器中提供废塑料碎片，所述处理容器的上部和下部部分的相对侧具有气体入口和气体出口，其中所述废塑料碎片含有‑使用HS‑SPME‑GC×GC‑MS测定的8000ppb至20000ppb的量的C7至C11醛类；并进一步含有‑使用HS‑SPME‑GC‑MS测定的5ppm至500ppm的量的苎烯；(b)任选地洗涤和干燥步骤(a)的所述废塑料碎片；(c)任选地将所述废塑料碎片预热至在20℃至比所述废塑料碎片的维卡软化点(10N，ISO 306)低10℃的温度点的范围内的温度；(d)在标准压力或减压下在没有搅拌的固定床中，在20℃至比所述废塑料碎片的维卡软化点(10N，ISO 306)低10℃的温度点的范围内的温度下，使所述废塑料碎片经历气流以达到在35至1200的范围内的雷诺数；(e)回收经处理的废塑料碎片，所述经处理的废塑料碎片含有·使用HS‑SPME‑GC×GC‑MS测定的50ppb至小于5000ppb的量的C7至C11醛类和·使用HS‑SPME‑GC‑MS测定的0.5至5ppm的量的苎烯；(f)使步骤(e)的所述经处理的废塑料碎片经历挤出步骤以产生粒料；(g)回收所述粒料。

Methods for removing contaminants from polymers

본 발명은 플라스틱 중합체를 처리하여 유기 오염물을 감소시키거나 제거하는 방법에 관한 것이다. 보다 상세하게는, 본 발명은 용매화 유체가 초임계 상태에 있으며 중합체 물질로부터 유기, 및 특히 비휘발성의 오염물을 우선적으로 용매화하고 추출하기에 충분한 조건에 제공되도록 하여 상기 용매화 유체로 유동성 중합체 물질을 연속적인 수단으로 처리하는 방법에 관한 것이다. The present invention relates to a method of treating or reducing plastic contaminants by treating plastic polymers. More specifically, the present invention allows the solvating fluid to be in a supercritical state and provided under conditions sufficient to preferentially solvate and extract organic, and particularly nonvolatile, contaminants from the polymeric material such that the flowable polymer is flowable into the solvating fluid. A method of treating a substance by continuous means.

Carbon fiber resin matrix composite material thermal degradation catalyst and application method thereof

本发明提供了一种碳纤维树脂基复合材料热降解催化剂及其应用方法，涉及碳纤维回收技术领域，回收效率高，成本低，回收后碳纤维的力学强度也得到了保持，能够为碳纤维树脂基复合材料的循环经济提供支持；该催化剂包括第一组分、第二组分和第三组分；所述第一组分为氯化钾或氯化钠，所述第二组分为氯化锌或氯化铁，所述第三组分为二氧化钛或氧化硅；第一组分、第二组分和第三组分的质量比为1:0.5:0.5～1:2:2；使用时，将碳纤维树脂基复合材料裁剪并置于熔融状态的所述催化剂中，300～500℃保温反应10min～30min，取出进行超声清洗。本发明提供的技术方案适用于碳纤维回收的过程中。

Catalyst circulating waste plastic/organic matter decomposition apparatus and decomposition system

本发明的课题在于提供一种高效的废塑料、有机物、特别是由各种塑料类构成的医疗废弃物的分解装置和分解系统。本发明人通过导入使用旋转轮的触媒循环机构以及/或者导入混合槽完成了本发明。

Polyolefin resin composite material containing cellulose fibers dispersed therein, pellet and molded article using the same, and method for producing polyolefin resin composite material containing cellulose fibers dispersed therein

一种分散有纤维素纤维的聚烯烃树脂复合材料、使用了该复合材料的粒料和成型体、以及该复合材料的制造方法，该分散有纤维素纤维的聚烯烃树脂复合材料是将纤维素纤维分散于包含聚丙烯树脂的聚烯烃树脂中而成的，在上述聚烯烃树脂与上述纤维素纤维的总含量100质量份中，上述纤维素纤维的比例为1质量份以上70质量份以下，上述聚烯烃树脂的通过凝胶渗透色谱测定得到的Z均分子量Mz相对于重均分子量Mw之比满足Mz/Mw≥4。

Method for purifying regenerated polyethylene

FIELD: purification methods. SUBSTANCE: method for purifying regenerated polyethylene is described, wherein regenerated polyethylene is selected from a group consisting of polymers after domestic use, polymers after industrial use and combinations thereof, including bringing regenerated polyethylene into contact with the first liquid solvent, dissolving extracted regenerated polyethylene in a solvent selected from a group consisting of the first liquid solvent, the second liquid solvent and mixtures thereof, settling the first solution containing polyethylene, at least one dissolved contaminating impurity and at least one suspended contaminating impurity to obtain the second solution containing polyethylene, at least one dissolved contaminating impurity and smaller amount of at least one suspended contaminating impurity; filtrating the second solution to obtain the third solution containing purer polyethylene, at least one dissolved contaminating impurity and even smaller amount of at least one suspended contaminating impurity; separating purer polyethylene from the third solution; wherein the second liquid solvent has the same chemical composition as the first liquid solvent, or another chemical composition, and the liquid solvent is selected from a group consisting of olefin hydrocarbons, aliphatic hydrocarbons and mixtures thereof, wherein aliphatic hydrocarbon is preferably selected from a group consisting of aliphatic hydrocarbons C 1 -C 6 and mixtures thereof. EFFECT: obtaining purified polyethylene. 14 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 765 954 C1 (51) МПК C08J 11/08 (2006.01) B29B 17/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C08J 11/08 (2021.05); B29B 17/00 (2021.05) (21)(22) Заявка: 2020136469, 18.06.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 07.02.2022 20.06.2018 US 62/687,388 (56) Список документов, цитированных в отчете о поиске: EP 3112406 ...

Bottle excellent in recyclability and method for recycling the bottle

本发明提供了再生性优良瓶以及该瓶的有效再生方法，该瓶具有叠层结构，该叠层结构除主原料树脂层外还含有阻气性良好的乙醇酸类聚合物层。更具体来说，所提供的瓶具有叠层结构，该叠层结构除主原料树脂层外还含有至少一层乙醇酸类聚合物。瓶破碎后，用碱水、水或酸水洗涤破碎物，从而去除乙醇酸类聚合物层，回收主原料树脂。

Polyolefin resin composite material containing cellulose fibers dispersed therein, pellet and molded article using the same, and method for producing polyolefin resin composite material containing cellulose fibers dispersed therein

一种分散有纤维素纤维的聚烯烃树脂复合材料、使用了该复合材料的粒料和成型体、以及该复合材料的制造方法，该分散有纤维素纤维的聚烯烃树脂复合材料是将纤维素纤维分散于包含聚丙烯树脂的聚烯烃树脂中而成的，在上述聚烯烃树脂与上述纤维素纤维的总含量100质量份中，上述纤维素纤维的比例为1质量份以上70质量份以下，该复合材料的吸水率满足下述式。[式] (吸水率)＜(纤维素有效质量比) 2 ×0.01

Cleaning method of polluted polymers

Настоящее изобретение относится к способу очистки регенерированного полиолефинового гомополимера или сополимера, включающему: a) получение регенерированного полиолефинового гомополимера или сополимера, причем упомянутый регенерированный полиолефиновый гомополимер или сополимер выбирают из группы, состоящей из полимеров после бытового использования, полимеров после промышленного использования и их комбинаций; b) приведение в контакт регенерированного полиолефинового гомополимера или сополимера при температуре от 80 до 220°C и при давлении от 1,03 МПа (150 фунтов на кв. дюйм) до 103,42 МПа (15000 фунтов на кв. дюйм) с первым жидким растворителем со стандартной температурой кипения менее чем 70°C, с получением экстрагированного регенерированного полиолефинового гомополимера или сополимера; c) растворение экстрагированного регенерированного полиолефинового гомополимера или сополимера во втором жидком растворителе со стандартной температурой кипения менее чем 70°C при температуре от 90 до 220°C и давлении от 2,41 МПа (350 фунтов на кв. дюйм) до 137,90 МПа (20000 фунтов на кв. дюйм), с получением раствора гомополимера или сополимера; d) отделение гомополимера или сополимера от упомянутого раствора гомополимера или сополимера; при этом второй жидкий растворитель имеет тот же химический состав, что и первый жидкий растворитель, или другой химический состав, причем указанные первый и второй жидкие растворители выбирают из группы, состоящей из алифатических C–Cуглеводородов и их смесей. Технический результат – осуществление более простого и экономически выгодного с точки зрения числа отдельных операций способа очистки регенерированного полиолефинового гомополимера или сополимера, приводящего к получению очищенного полимерного продукта с улучшенными цветовыми характеристиками, с пониженным уровнем загрязняющих примесей, не имеющего запаха, однородного и близкого по своим свойствам к исходному полимеру. 9 з.п. ф-лы, 4 ил., 1 табл., 3 пр. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 ...