Improvements relating to the manufacture of fibres, ribbons, films or the like from viscose

Cellulose xanthates, processes for making filaments and films from; alkali cellulose.--Viscose of high concentration, e.g. 10 per cent or more, and of low viscosity suitable for spinning into threads, ribbons, films, &c., is prepared by treating cellulose with alkali of more than 20 per cent strength, and, after pressing, disintegrating the alkali cellulose at a raised temperature of 25 or 30 DEG C. or higher. The alkali cellulose may be sulphided directly or after ripening. Further to reduce viscosity, oxidizing agents may be added during the mercerizing, xanthating or dissolving steps; and the cellulose is preferably dried, e.g. at a temperature up to 100 DEG C. or higher. The viscose is spun into acid salt baths; cold baths yield dull and hot baths glossy threads. Stretch is applied to the threads. In an example, cellulose mercerized in 27 per cent caustic soda is pressed to 3 times its initial weight, disintegrated for 4\ba1/2\be hours at 28 DEG C., allowed to ripen for 24 hours, and ...

Process for the production of rayon products

Viscose rayon, suitable for the production of staple fibre, is obtained by spinning into a dilute sulphuric acid coagulating bath, containing at least 50 grams per litre of sodium sulphate, a viscose prepared from cellulose pulp having a degree of polymerization of at least 700, without ripening of the alkali cellulose and without ageing of the viscose, the viscose having a viscosity of at least 300 poises and a gamma value higher than 60, and thereafter fixing the filamentary product by treatment with a hot aqueous liquid. The filaments obtained have a high resistance to breaking by repeated bending. The viscose may have a cellulose content of 5.5 to 7.5 per cent. and a caustic soda content of 3 to 5 per cent. The coagulating bath may contain up to 30 grams per litre of sulphuric acid and 80 or more grams per litre of sodium sulphate. The viscose may be spun vertically upwards from a horizontal spinneret and the filaments may be subjected to stretching continuously with their production ...

METHOD FOR PRODUCING HIGHLY CRIMPED REGENERATED CELLULOSE FIBERS BY STEAM STRETCHING

... 1,262,797. Crimped viscose filaments. MITSUBISHI RAYON CO. Ltd. 23 June, 1970 [24 June, 1969 (2)], No. 30469/70. Heading B5B. A method for producing highly crimped regenerated cellulose fibres involves stretching filaments containing the reaction product of cellulose xanthate and formaldehyde in a humidified atmosphere having a relative humidity of more than 50% and kept at a temperature of 40‹ to 130‹ C., relaxing said filaments while in a state of regeneration degree of less than 89%, preferably between 20% and 80%, in a liquid having a swelling action on said filaments and maintained at a temperature of between 30‹ and 90‹ C. and then subjecting the filaments to regeneration treatment to complete regeneration. The filaments are preferably obtained by extruding viscose containing 2 to 8% total alkali and having a salt point of at least 16 into a coagulation bath maintained at a temperature less than 45‹ C. containing 20 to 250 g./l. sodium sulphate, less than 0À3 g./l. zinc sulphate and ...

Improvements in or relating to the manufacture of viscose

... 319,291. Lilienfeld, L. April 14, 1928. Cellulose xanthates, and processes for making filaments and films therefrom; preparatory treatment of cellulose.-Viscose of improved qualities is obtained by treating the cellulose, before conversion into alkali cellulose, one or more times with an alkali solution containing not less than 18 per cent of caustic soda or an equivalent of another caustic alkali, and subsequently washing the treated cellulose, if required after removal of any excess alkali solution by pressing or centrifuging, either with water, or first with dilute alkali of, for example, not more than 12 per cent strength or with alkali solution of decreasing concentrations, and finally with water. The cellulose may be subjected to a preliminary treatment with dilute alkali solution. Before conversion into alkali cellulose, the material may be dried, or it may be used in the wet state, the caustic alkali being added either in the solid state or in the form of a concentrated solution ...

Polynosic Fibers and process for producing the same

... 1,167,555. Polynosic fibres. MITSUBISHI RAYON CO. Ltd. 19 Sept., 1967 [22 Sept., 1966; 12 Oct., 1966], No. 42530/67. Heading B5B. Improved polynosic fibres are prepared by extruding viscose having a -value of at least 50 into a coagulation bath containing formaldehyde, stretching the resulting filaments in a second bath, treating the stretched filaments in a third aqueous bath containing a salt selected from, an alkali metal salt of a mineral acid, an alkaline earth metal salt of a mineral acid, an ammonium salt of a mineral acid, or their mixture, the pH of the third bath being kept between 2 and 10À5, and its temperature between 30‹ and 90‹ C., and then subjecting the treated fibres to regeneration. The third bath may also contain up to 0À5 g./l. of a zinc salt of a mineral acid or a cadmium salt of a mineral acid and up to 1 g./l. of sulphuric acid. The second bath is desirably a low concentration sulphuric acid bath. In one embodiment viscose having a total alkali concentration of 2 ...

Improvements in the manufacture of artificial silk

In the process described in Specification 163,817 for spinning very fine threads of artificial silk from viscose, there is employed as a spinning bath a highly-concentrated solution of bisulphites either alone or with additions of formaldehyde of glucose; the concentration-and preferably the temperatureis higher the finer the thread to be produced. Thus, for a 7 denier thread, a bath containing 310 grammes of sodium bisulphite per litre is suitable; for a 2 denier thread, a bath containing 360 grammes per litre is employed; while for a 1.5-1 denier thread, a saturated solution of the more easily soluble ammonium bisulphite, maintained at a temperature of 30-80 DEG C, is used.

METHOD OF MAKING HIGH WET MODULUS VISCOSE RAYON

Manufacture of artificial materials from viscose

... 264,161. Lilienfeld, L. Jan. 5, 1926, [Convention date]. Cellulose xanthates, processes for making filaments, films, and other products from.- When making artificial thread, films, bands, plates or layers from viscose, the initially-coagulated product, which may be insoluble or soluble in water, is treated with a strong mineral acid, preferably sulphuric acid of 50-85 per cent strength, or 35 -40 per cent hydrochloric acid, or 60-90 per cent nitric acid, or 60-92 per cent arsenic acid, or phosphoric acid of 1.5-1.86 specific gravity, or mixtures of such acids either with each other, with one or more neutral or acid salts, boric acid &c., or with glycerine, sugar, a salt of an organic base such as aniline, or an organic acid such as acetic, formic, lactic or oxalic acid. Viscoses of all kinds may be employed, but particularly those made from unmatured or only partly matured alkali-cellulose, and in the preparation of the viscose these may be used an amount of carbon bisulphide larger than ...

Improvements relating to the manufacture of fibres, ribbons, films or the like from viscose

... 309,147. I. G. Farbenindustrie Akt.- Gas. April 5, 1928, [Convention date]. Addition to 306,971. Cellulose xanthates. - The process of the parent Specification is modified in that organic oxy-acids, such as tartaric, citric, or lactic acids, or alkali salts of such acids, are added to viscose or one or more of the materials used in making the viscose instead of oxalic acid or its alkali salts and the viscose is precipitated in a bath consisting of a solution of sulphuric acid and sodium sulphate. The amount of the organic oxy-acid or its salt added may vary with the technical requirements but from 0.1-1 per cent is usual. In an example, 5 grams of potassium bitartrate are dissolved while stirring in 1 litre of viscose, which is then worked up by coagulation in a bath consisting of a solution of sodium sulphate and sulphuric acid. Specification 2992/13 is referred to.

Manufacture of viscose

A mixture of alkalized cellulose and excess lye containing at most 25 per cent of cellulose is sulphidized without previously removing the excess lye and the sulphidized mass is diluted, if desired, to the required cellulose content and viscosity. It is stated that a completely clear viscose may be obtained in a few hours, and by selecting the concentration of lye at the beginning of the process, the viscosity of the product may be varied within wide limits without the usual step of ripening the alkali cellulose. In examples, a viscose obtained by using lye of 19 per cent strength has a viscosity of 15 seconds (ball-viscosimeter), whereas a viscose of similar cellulose content made with the use of a lye of 12 per cent strength has a viscosity of 50 seconds.

Process for the production of viscose complexes

The maturing of normal alkali viscose is hastened by adding, before or during the ageing stage, trisodium phosphate or its phosphate-ion equivalent, suitable proportions being up to 4,5 per cent of trisodium phosphate, 3,3 per cent of monosodium phosphate, 3,9 per cent of disodium phosphate, 3,6 per cent of ammonium phosphate, or 2,7 per cent of phosphoric acid calculated on the cellulose content. The addition has the further effect of stabilizing the matured viscose. In examples, viscoses of the following composition are used, (1) for artificial horse hairs, cellulose content 12,92 per cent, alkaline content 3,2 per cent, phosphate ions to the equivalent of trisodium phosphate 4 per cent; (2) for flat ribbons, cellulose content 8,4 per cent, alkaline content 7,3 per cent, phosphate ions to the equivalent of 4 per cent. Filaments and films produced may require no subsequent treatment other than rinsing with water.

Manufacture of artificial silk of high tensile strength from viscose

Viscose silk of high tensile strength and strongly indented cross section is obtained by the addition to the viscose of a substance that reduces surface tension in conjunction with the use of a coagulation bath containing at least 40 per cent sulphuric acid or the equivalent. Suitable agents for addition to the viscose are turkey red oil, monopol oil, substituted naphthalene sulphonic acids or their salts, and hydrogenated naphthalene sulphonic acids. In examples, viscoses containing turkey red oil and sodium dibutyl naphthalene sulphonate are extruded into coagulation baths consisting of 37 per cent sulphuric acid with additions of acid sulphates, 75 per cent sulphuric acid, and 4 parts of sulphuric acid, one part of methyl alcohol, and one part of water. Specifications 274,521, 281,351, 303,514, 304,244, 307,829, 311,112, 317,608, 334,030, 337,350, [all in Class 2 (ii), Cellulose &c.], 345,938, and 361,760 are referred to.

Method of cleaning apparatus for making and dissolving cellulose xanthate

... 544,855. Cellulose xanthate. BAKER PERKINS, Ltd. Oct. 29, 1940, No. 15829. Convention date, April 29. [Class 2 (ii)] In the manufacture of viscose wherein alkalicellulose is xanthated in a closed machine and the resulting xanthate is dissolved in the machine to produce viscose, the machine is cleaned before introducing the next batch of alkali cellulose by washing or rinsing it with a solution of caustic soda. The residual viscose, left in the machine after removal of a batch of dissolved xanthate, is washed out with water or caustic soda and the machine is then rinsed with a caustic soda solution of such strength that it will not detrimentally reduce the alkalinity of any part of the alkali-cellulose below the minimum required for complete xanthation. The rinsing solution preferably contains at least 10 per cent. of NaOH. The washing and rinsing may be carried out as a single treatment by using a sufficiently strong caustic soda solution. The washing liquid containing the dissolved residual ...

Improvements relating to processes for spinning artificial silk from viscose in an acid spinning bath

In the production of filaments, fibres, threads and the like from viscose by extrusion into an acid spinning bath a small amount of a compound of general formula wherein R and R1 may be aliphatic or aromatic radicles, the chain of which excluding aromatic or other nucleus has a length of at most 6 C-atoms, or R1 may be hydrogen, X may be OH or a monovalent acid radicle and the pyridine may be substituted or may be a homologue of pyridine is added to the spinning bath or spinning solution, to prevent blocking of the spinning nozzles. These compounds are stable in both acid and alkaline solutions and will not cause foam-formation on concentration of the bath by evaporation since they are not surface-active. In an example 0.1 per cent of N(a -furyl-21; hydroxy-21; phenyl-11; ethyl)-1 pyridinium bromide is dissolved in a spinning bath containing 50 g. zinc sulphate per litre in addition to the normal quantities of sodium sulphate and sulphuric acid. After spinning for ...

Process and device for the xanthation of alkali cellulose

An apparatus for the continuous xanthation of soda cellulose in the manufacture of viscose comprises a ring of cells or cavities 3 of equal volume located in a horizontal wheel 1 fixedly mounted on a rotatable shaft 2, illustrated in Figs. 1 and 2 (not shown). The wheel 1 is enclosed closed in a fixed casing with a very small clearance between the wheel and the casing to prevent as far as possible the flow of liquid or gas from one cell to another. The wheel is rotated in a stepwise or intermittent manner so that each cell in turn is subjected to the following cycle of operations. The cell is brought to the position or station a where each cell is in turn filled with soda cellulose AC. Each cell, after having been filled with soda cellulose is then brought to the position b, where it is evacuated, then to the position c, where an inert gas which does not support combustion (such as nitrogen) is introduced into the cell. Thereafter the cell is brought to the position d where carbon bisulphide ...

Improved process for the production of cellulose xanthate solutions

Viscose is manufactured in a continuous series of operations all carried out at 12--18 DEG C., wherein cellulose pulp is alkalized in a sodium hydroxide solution of sufficient concentration and quantity to effect complete conversion to alkali cellulose, this quantity being about 13 parts by weight per 4 parts of a -cellulose when the concentration of the solution is 19 per cent, and being varied proportionally for other concentrations, and wherein the alkali cellulose is xanthated, dissolved in dilute alkali, and filtered ready for immediate precipitation. The process avoids the usual steps of ageing. Preferably, a high p grade a -cellulose material is used, but poorer quality material may be used if desired. In an example, cellulose pulp is formed into crumbs and mixed in a closed container with the requisite quantity of caustic soda for 20--40 minutes, the time being less for high viscosity pulp than for pulp of low viscosity. The alkali cellulose without being ripened is mixed with carbon ...

"a method of producing viscose"

Viscose is produced by mixing air-dry cellulose in fibrous form with an emulsion of carbon disulphide in water and then mixing the mixture thus formed with an aqueous solution of caustic soda of such concentration that the ratio of the amount of caustic soda in the final mixture to the total amount of water in the mixture is sufficiently high to cause the cellulose, carbon disulphide and caustic soda to react together to form sodium cellulose xanthate, the xanthate thus produced being then completely dissolved by the addition to the mixture of either water or a dilute aqueous solution of sodium hydroxide. Known surface active emulsifiers may be added to the water or to the carbon disulphide used in preparing the emulsion. The emulsion may be subjected to vibrations of ultra-sonic frequency. Instead of a carbon disulphide emulsion in water, a solution of carbon disulphide in an organic solvent which is miscible with water or in a mixture of such organic solvents may be used. In the example ...

PROCEDURE FOR THE PRODUCTION OF RIPPLED/CRINKLED PILE FIBERS WITH HIGH WET MODULE

VORRICHTUNG ZUM ZUBEREITEN VON BABYNAHRUNG

MODIFIZIERTE FASERN UND VERFAHREN ZUR HERSTELLUNG DERSELBEN

CELLULOSEFASERN MIT EINGELAGERTEN ACRYLPOLY- MERISATEN UND MIT HOHER ABSORPTIONSFAEHIGKEIT SOWIE VERFAHREN ZU IHRER HERSTELLUNG

VERFAHREN ZUR HERSTELLUNG VON REGENERIERTEN ZELLULOSEFASERN

CELLULOSEFASERN, INSBESONDERE FUER DIE HERSTELLUNG VON VLIESEN UND VERFAHREN ZUR HERSTELLUNG DER FASERN

NANO-DIAMOND AND PLATINUM NANO-COLLOID CONTAINING FIBER AS WELL AS BED COMMODITY WITH THE FIBER

METHOD FOR PREPARING CELLULOSE FIBRE

Die vorliegende Offenlegung offenbart ein Verfahren zur Herstellung von Zellulosefasern. Das Verfahren umfasst die folgenden Schritte: 1) Mischung von Zellstoff-Pulpe mit einer wässrigen NMMO-Lösung einer Gewichtskonzentration von 60 % - 85 %, vorzugsweise 70 % - 76 %, um eine gleichförmige Mischung zu erhalten; 2) Unterwerfen der erhaltenen gleichförmigen Mischung einer Entwässerung zur Quellung und Auflösung, und Entlüftung, um eine Zellulose-Spinn-Stammlösung zur erhalten; 3) Einbringen der Zellulose-Spinn-Stammlösung in eine Spinnmaschine nach Filtrierung und Wärmeaustausch, und Einbringen in ein Koagulationssystem nach dem Extrudieren durch ein Spinnpaket und Luftkühlung, und hierauf Koagulieren in einem NMMO-Koagulationsbad einer Gewichtskonzentration von 50 % - 72 %, um naszente Fasern zu erhalten; und 4) Unterwerfen der naszenten Fasern einer Waschung, um ein Faser-Filamentbündel zu erhalten und hierauf Durchführung einer Behandlung in einem nachfolgenden Bereich, um Zellulosefasern ...

PROCEDURE FOR THE IMPROVEMENT OF THE WORKABILITY OF CELLULOSE SPIN SOLUTIONS

PROCEDURE FOR THE PRODUCTION OF FLAME-FIRM CELLULOSE RAIN ADVICE FIBERS

CELLULOSE FIBERS WITH STORED ACRYLIC POLYMER AND WITH HIGHER ABSORPTIONSFAHIGKEIT

Verfahren zum Vorbehandeln von rückgewonnenen Baumwollfasern zur Verwendung bei der Herstellung von Formkörpern aus regenerierter Cellulose

A process for pretreating reclaimed cotton fibres to be used in the production of moulded bodies from regenerated cellulose, characterized by effective metal reduction and adjustment of the degree of polymerization and brightness, including a metal removing stage and an oxidative bleaching stage of the reclaimed cotton fibres or pulp produced thereof. Reclaimed cotton fibres treated according to the described process may be used alone or in blends with conventional dissolving pulp as raw material for the production of moulded bodies from regenerated cellulose. The process enables technically smooth, safe, and economically feasible spinning via the Viscose or Lyocell process, therefore, the current invention provides an efficient recycling pathway for cotton waste materials.

DEVICE FOR PREPARING BABY FOOD

VERWENDUNG EINER CELLULOSEFASER

Die vorliegende Erfindung betrifft die Verwendung einer Cellulosefaser, welche ein Chitosan oder ein Chitosoniumsalz inkorporiert und/oder an der Oberfläche der Faser aufweist, in einem nicht-gewebten Textil und/oder einem saugfähigen Hygieneprodukt.

VERFAHREN ZUR HERSTELLUNG VON VISKOSEHOHLFASERN

Procedure for the production of viscose rayon solution.

VERWENDUNG EINER CELLULOSEFASER

Procedure for the production of high-strength, rippled/crinkled Reyonfasern

Procedure for the production of a Viskoserayons with high wet module and with ripples abilities

PROCEDURE FOR THE PRODUCTION OF VISCOSE RAYON HOLLOW FIBERS

Procedure and device for the continuous production of viscose rayon from alkali cellulose

Procedure for manufacturing bonded fabrics

Procedures for the production of Hydroxyäthylcellulose degraded polymerization degree

PROCEDURE FOR THE PRODUCTION FROM GEGENST�NDEN REGENERATED CHITIN CHITOSAN CONTAINING MATERIAL AND PRESERVATION GEGENST�NDE

PHOSPHONITRILATES

FIBROUS PROTEIN PROCESSING METHOD

Disclosed is a process for preparing proteinaceous materials. The process comprises solubilising fibrous protein by contacting it with an alkaline solution, ageing the resulting mixture to form a homogenous solution, and coagulating the resulting solution to form the proteinaceous material. 5 The proteinaceous materials may be produced as, for example, fibres, films, sheets, coatings, particles, shapes, foams or composites.

PROCESS OF MAKING CELLULOSIC FIBERS INCLUDING PTFE

The present invention is directed to a method for making solution spun fibers having decreased coefficient of friction and other improved properties such as wear resistance and the like, when compared to conventional solution spun fibers. In the method of the present invention, polytetrafluoroethylene (PTFE) is incorporated into the fiber-forming substance during the solution spinning process before passing through the spinneret. PTFE that is useful in the present invention includes PTFE powder that is dispersible to low micron or submicron particle size and aqueous or organic dispersions of such highly dispersible PTFE powder. The present invention is also directed to fabrics, textiles, and other articles of manufacture formed from the PTFE-enhanced solution spun fibers of the present invention.

METHOD FOR PRODUCING FIRE-RETARDING CELLULOSIC FIBRES

PROCESS FOR THE PRODUCTION OF A TREATED PULP, TREATED PULP, AND TEXTILE FIBRES PRODUCED FROM THE TREATED PULP

The present invention relates to a process for the production of treated pulp comprising the steps of: i. providing a fibre source material; ii. subjecting the fibre source material to pre-hydrolysis; iii. subjecting the pre-hydrolysed fibre source material to alkaline chemical pulping process, preferably kraft pulping, to obtain an alkaline pulp; iv. optionally adjusting the pH of the obtained pulp to above pH 9; v. subjecting the alkaline pulp to a bleaching sequence comprising contacting the pulp with ozone (Z) in alkaline conditions to obtain a treated pulp. The invention also relates to a treated pulp obtained, textile fibres produced from the treated pulp, textile products comprising the textile fibres and to the use of the treated pulp.

Spinnbad für Rohviskose.

Fällbad für Viskoselösungen.

Verfahren zur Gewinnung von Spinnbad aus dem beim Spinnen von Viskose in Schwefelsäure und Sulfat sich auf den Fäden bildenden Sulfat.

Spinnbad für Viskose.

Spinnbad für Viskosefädchen.

Spinnverfahren zur Herstellung feinster Fäden aus Rohviskoselösung unter Benutzung von saurer Ammonsulfatlösung als Fällbadflüssigkeit.

Verfahren zur Herstellung von Viskose.

Verfahren zur Herstellung feinster Fädchen aus Viskose.

Verfahren zur Herstellung von Kunstseide, Kunsthaar, Films usw. aus Viskose.

Verfahren zur Herstellung von Viskosefäden.

Spinnbad zur Herstellung von künstlichen Gebilden.

Verfahren zur Herstellung von Kunstfäden aus Viskose.

Verfahren zur Herstellung künstlicher Fäden, Fasern, Bänder und Filme.

Verfahren zur Durchführung der beim Geschmeidigmachen von künstlichem Fasergut benützten Weichmachungsflüssigkeit durch das Fasergut.

Verfahren zur Herstellung von Viskose, mit erhöhter Spinnfähigkeit zur Herstellung von Fäden, Bändern usw.

Verfahren zur Herstellung von Viskose.

Verfahren zur Herstellung von künstlicher Seide aus Viskose.

Verfahren zur Herstellung von Kunstfäden aus Viskose.

Verfahren zur Herstellung von Kunstfäden.

Verfahren zur Herstellung animalisierter Fäden, Folien oder anderer Gebilde.

Verfahren zur Gewinnung von Xanthogenatlösungen.

Verfahren zur Herstellung von Gebilden aus wässerigen Lösungen von Cellulose oder Cellulosederivaten.

Verfahren zur Herstellung von Kunstseidefäden von hervorragendem Glanze und hoher Deckkraft aus Viskose.

Verfahren zur Herstellung animalisierter Fasern aus einer Spinnmasse.

Verfahren und Vorrichtung zur ununterbrochenen Lösung von Cellulosexanthogenat.

Verfahren zur Herstellung von Fäden, Folien oder andern Gebilden aus Viskose.

Verfahren zur Gewinnung von hochelastischen und hochfesten Fäden, Folien oder andern Gebilden aus Viskose.

Verfahren zur Herstellung von Kunstseidefäden mit glänzenden und matten Einzelfasern aus Viskose.

Verfahren zur Herstellung gefärbter Fäden, Folien oder anderer Gebilde aus Viskose.

Verfahren zur Herstellung von Xanthogenatlösungen.

Verfahren zur Herstellung von Viskose aus Alkalicellulose und Schwefelkohlenstoff.

Verfahren zur Beschleunigung der Reifung der Viskose.

Verfahren und Vorrichtung zur Prüfung von Viscose auf Spinnreife.

Verfahren zur Herstellung einer spinnfähigen Lösung von Cellulosexanthogenat.

Zum Spinnen besonders feiner oder hohler Fäden geeignete Viskose und Verfahren zu deren Herstellung.

Verfahren zur Herstellung von Spinnlösungen aus einem zellulosehaltigen Rohstoff.

Verfahren zur Herstellung gut filtrierbarer Viskoselösungen.

Verfahren und Vorrichtung zum Reifen von Viskose.

FLAME RETARDANT CELLULOSIC MAN-MADE FIBERS

The invention relates to flame-retardant cellulosic man-made fibers containing a flame-retardant substance in the form of an oxidized condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several amine groups whereby the fiber has a tenacity of more than 18 cN/tex in a conditioned state. Production process and the use of the fibers according to the invention are further objects of the invention. 1. A flame-retardant cellulosic man-made fiber containing a flame-retardant substance in the form of an oxidized condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several groups of amine groups , wherein the fiber has a strength of more than 18 cN/tex in a conditioned state.2. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the nitrogenous compound is selected from the group consisting of urea claim 1 , ammonia claim 1 , thiourea claim 1 , biuret claim 1 , melamine claim 1 , ethylene urea claim 1 , guanidine and 2-cyanoguanidine.3. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the tetrakis hydroxyalkyl phosphonium salt is a tetrakis hydroxymethyl phosphonium salt.4. The flame-retardant cellulosic man-made fiber according to claims 1 , wherein the fiber is a viscose or modal fiber.5. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the cellulosic man-made fiber is a cupro or carbamate fiber.6. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the fiber is a lyocell fiber.7. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the share of flame-retardant substance in the cellulose fiber is between 5 and 50 weight percent.8. The flame-retardant cellulosic man-made fiber according to claim 1 , wherein the tenacity is from 18 cN/tex to 50 cN/tex.9. The flame-retardant cellulosic man-made fiber according to ...

RECYCLING OF MAN-MADE CELLULOSIC FIBERS

A process for producing a man-made cellulosic molded body using a man-made cellulosic raw material, including the steps of forming a cellulose solution by dissolution of cellulosic raw material, the extrusion of the cellulose solution obtained to form a molded body, and coagulation and regeneration of the cellulose to obtain the man-made cellulosic molded body, wherein the man-made cellulosic raw material is mixed with a second cellulosic raw material prior to forming the cellulose solution. 2. Process according to claim 1 , wherein the reclaimed man-made cellulosic raw material was obtained from pre- and/or post-consumer waste containing man-made cellulosic fibers produced by the viscose- claim 1 , modal or lyocell process.3. Process according to claim 1 , wherein the pre- and/or post-consumer waste additionally contained non-cellulosic fibers and wherein these non-cellulosic fibers are quantitatively separated from the reclaimed man-made cellulosic raw material prior to the alkalization step.4. Process according to claim 1 , wherein the metal removing stage is an acidic washing treatment and/or a treatment with a complexing agent.5. Process according to claim 4 , wherein an acidic washing treatment and a treatment with a complexing agent in the metal removing stage are combined in one step by adding a complexing agent to the acidic washing treatment.6. Process according to claim 1 , wherein the molded body is a staple fiber claim 1 , filament fiber claim 1 , sponge or foil of the Viscose or Modal type.7. Process according to claim 1 , wherein the difference between the limiting viscosity numbers of the alkali cellulose of the reclaimed man-made cellulosic raw material and the alkali cellulose of virgin cellulosic raw material is equal to or lower than 30 ml/g claim 1 , preferably lower than 10 ml/g.8. Process according to claim 1 , wherein the reclaimed man-made cellulosic raw material is a staple fiber claim 1 , filament fiber claim 1 , sponge or foil of the ...

LYOCELL FIBER WITH VISCOSE LIKE PROPERTIES

The present invention provides a lyocell fiber with increased water retention value and decreased crystallinity as well as a method for producing same and products comprising same. 1. A lyocell fiber with a water retention value (WRV) of at least 70% and a crystallinity of 40% or less.2. The lyocell fiber according to claim 1 , having a titer of 6.7 dtex or less.3. The lyocell fiber according to claim 1 , produced from a pulp having a hemicelluloses content of 7 wt.-% or more and 25 wt.-% or less.4. The lyocell fiber according claim 1 , wherein the hemicellulose comprises a ratio of xylan to mannan hemicelluloses of from 125:1 to 1:3.5. The lyocell fiber according claim 1 , having a porous core layer and a pore size of the surface layer of above 5 nm.6. The lyocell fiber according claim 1 , wherein the pulp employed for preparing the fiber has a scan viscosity of from 300 to 440 ml/g.7. The lyocell fiber according claim 1 , having a crystallinity of 35% or less.8. The lyocell fiber according claim 1 , with a xylan content of 6 wt.-%.9. The lyocell fiber according claim 1 , with a mannan content of 1 wt. % or less.10. The lyocell fiber according to claim 1 , with a mannan content of 3 wt.-% or more.11. A method for producing a lyocell fiber according to comprising the following steps:a) Manufacture of a spinning solution containing 10 to 20 wt.-% cellulose with a hemicelluloses content of 7 wt.-% or more,b) Extrusion of the spinning solution through extrusion nozzles to obtain filaments,c) Initial coagulation of the filaments via a spin bath containing a coagulation liquor with a concentration of tertiary amine oxide of 20% or less;d) Washing the filaments; ande) After-treatment (f.e. washing, cutting, drying) to yield wet or dry filaments or staple/short cut fibers or other cellulosic embodiments.12. The method according to claim 11 , wherein the hemicellulose comprises a ratio of xylan to mannan hemicelluloses of from 125:1.13. A product comprising the lyocell ...

Method for the manufacture of antibacterial viscose filament rayon and a product obtained using that method

The antibacterial viscose rayon, according to the invention, is used for the manufacture of any type of textile articles, including items intended for medical use, ensuring a more lasting antibacterial and antifungal protection due to the uniform distribution of the antibacterial additive throughout the entire volume of the fibre. According to the invention, immediately before spinning, the viscose is mixed and homogenized with an antibacterial additive, and then spun following the classical procedure: the viscose solution, with required and strictly specified parameters is fed under pressure to the spinnerets of the spinning machine from which the cellulose solution enters a spin bath, where as a result of the chemical reactions in course is transformed into fibres subjected afterwards to a subsequent treatment. According to the invention, in the production of dope dyed antibacterial rayon, into the preliminarily prepared suspension composed of one or a couple of pigments, a specified amount of antibacterial additive is introduced, the obtained mix is homogenized and filtered, and then subjected to the classical stages of spinning and subsequent treatments.

FUNCTIONALIZATION OF FOREIGN MATERIAL IN LYOCELL-METHODS

Method of manufacturing a regenerated cellulosic molded body, wherein the method comprises supplying a starting material which comprises cellulose and at least one foreign matter, transferring at least a part of the starting material with at least a part of the at least one foreign matter into a spinning mass which additionally contains a solvent for solving at least a part of the cellulose of the starting material in the solvent, and extruding the spinning mass to the molded body, and subsequently precipitating in a spinning bath, wherein thereby the molded body is obtained, wherein the molded body comprises cellulose and at least a part of the at least one foreign matter. 115.-. (canceled)16. Method of manufacturing a regenerated cellulosic molded body , wherein the method comprises:supplying a starting material which comprises cellulose and at least one foreign matter;transferring at least a part of the starting material with at least a part of the at least one foreign matter into a spinning mass which additionally contains a solvent for solving at least a part of the cellulose of the starting material in the solvent;adjusting a desired or pre-given residual concentration of the at least one foreign matter in the molded body for obtaining a function of the at least one foreign matter in the molded body;extruding the spinning mass to the molded body and subsequently precipitating in a spinning bath , wherein thereby the molded body is obtained, wherein the molded body comprises cellulose and at least a part of the at least one foreign matter.17. Method according to claim 16 , wherein the method comprises at most partially removing at least one of the at least one foreign matter by separating a part of the at least one foreign matter from the cellulose of the starting material claim 16 , in particular prior to precipitating claim 16 , further in particular prior to solving.18. Method according to claim 16 , wherein the starting material comprises or consists of a ...

METHOD OF REUSING A MIXED TEXTILE COMPRISING CELLULOSE AND SYNTHETIC PLASTIC

A method of recycling a mixed textile, wherein the method comprises: i) supplying the mixed textile, wherein the mixed textile comprises cellulosic fibers and synthetic fibers, wherein the synthetic fibers comprise at least one synthetic plastic, ii) at least partially depleting the synthetic plastic from the cellulose, and iii) further processing the depleted mixed textile after depleting. 113.-. (canceled)14. Method of recycling a mixed textile , wherein the method comprises:supplying the mixed textile, wherein the mixed textile comprises cellulosic fibers and synthetic fibers, wherein the synthetic fibers comprise at least one synthetic plastic;depleting the synthetic plastic from the cellulose, such that a portion to be determined of the synthetic plastic remains in the mixed textile; andfurther processing the depleted mixed textile after depleting.15. Method according to claim 14 ,wherein the synthetic plastic is at least one of the group which is consisting of polyester, polyamide, polyurethane, polyether, and elastane.16. Method according to claim 14 ,wherein the mixed textile comprises or consists of cellulose in form of cotton.17. Method according to claim 14 ,wherein the mixed textile completely or partially comprises remains from a clothing manufacture and/or old clothes.18. Method according to claim 14 , further comprising:cleaning the cellulose, wherein the cleaning takes place between the depleting and the further processing.19. Method according to claim 14 , selectively depleting at least one synthetic plastic from the mixed textile,', 'in particular one of the group which is consisting of polyamide, polyester, polypropylene, polyurethane, and elastane., 'wherein the depleting further comprises20. Method according to claim 14 , wherein the depleting further comprises:completely removing at least one synthetic plastic from the mixed textile, in particular polyester and/or elastane.21. Method according to claim 14 , wherein the depleting further ...

COTTON FIBER DISSOLUTION AND REGENERATION AND 3D PRINTING OF CELLULOSE BASED CONDUCTIVE COMPOSITES

The present invention includes composition and methods for a core matrix comprising a dissolved cellulose fiber of, e.g., high molecular weight (DP>5000) or microcrystalline cellulose of low molecular weight (DP: 150-300), printed into a two or three dimensional pattern; a conductive material comprising a carbon nanotube or graphene oxide disposed on or about the cellulose fiber or microcrystalline cellulose; and an enhancer or stabilizer that stabilizes the dissolved cellulose or microcrystalline cellulose disrupted during a printing process, wherein the conductive material and the cellulose or microcrystalline cellulose forms one or more features in or on the cellulose fiber or microcrystalline cellulose. 1. A cellulose-based conductive composite , comprising:a core matrix comprising a dissolved cellulose fiber or microcrystalline cellulose printed into a two or three dimensional pattern;a conductive material comprising a carbon nanotube or graphene oxide disposed on or about the cellulose fiber or microcrystalline cellulose; andan enhancer or stabilizer that stabilizes the dissolved cellulose or microcrystalline cellulose disrupted during a printing process, wherein the conductive material and the cellulose or microcrystalline cellulose forms one or more features in or on the cellulose fiber or microcrystalline cellulose.2. The composite of claim 1 , wherein the concentration of pure cellulose samples is 1-20% of bleached cotton cellulose fiber with a Degree of Polymerization (DP) over 5 claim 1 ,000 claim 1 , or 5-50% for microcrystalline cellulose with a DP of 200-250.3. The composite of claim 1 , wherein a multiwall carbon nanotube (MWCNT) solution is separately placed in different ink boxes from the cellulose dissolved in a LiCl/DMAc solvent system claim 1 , and cellulose/MWCNTs conductive composite is then printed layer-by-layer with a two-channel 3D printer.4. The composite of claim 1 , wherein a graphene oxide (GO) solution is mixed with alginate to ...

Modified cross-section lyocell material for tobacco filter, and preparation method therefor

This invention relates to a lyocell material for a tobacco filter and a method of manufacturing the same, and more particularly to a lyocell fiber having a modified cross-section for a tobacco filter, wherein the cross-sectional shape of a monofilament contained in a lyocell fiber is controlled to increase the external surface area of the fiber, after which then crimps are formed, thereby exhibiting properties equal or superior to those of conventional lyocell materials, even when used in a small amount.

FLAME RETARDANT CELLULOSIC MAN-MADE FIBERS

The invention relates to flame-retardant cellulosic man-made fibers containing a flame-retardant substance in the form of an oxidized condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several amine groups whereby the fiber has a tenacity of more than 18 cN/tex in a conditioned state. Production process and the use of the fibers according to the invention are further objects of the invention. 1. Flame-retardant cellulosic man-made fiber containing a flame-retardant substance in the form of an oxidized condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several groups of amine groups , characterized in that the fiber has a strength of more than 18 cN/tex in a conditioned state.2. Flame-retardant cellulosic man-made fiber according to claim 1 , characterized in that the nitrogenous compound is selected from the group of urea claim 1 , ammonia claim 1 , thiourea claim 1 , biuret claim 1 , melamine claim 1 , ethylene urea claim 1 , guanidine and 2-cyanoguanidine.3. Flame-retardant cellulosic man-made fiber according to or claim 1 , characterized in that the tetrakis hydroxyalkyl phosphonium salt is preferably a tetrakis hydroxymethyl phosphonium salt.4. Flame-retardant cellulosic man-made fiber according to to claim 1 , characterized in that the fiber is a viscose or modal fiber.5. Flame-retardant cellulosic man-made fiber according to one of to claim 1 , characterized in that the cellulosic man-made fiber is a cupro or carbamate fiber.6. Flame-retardant cellulosic man-made fiber according to one of to claim 1 , characterized in that the fiber is a lyocell fiber.7. Flame-retardant cellulosic man-made fiber according to one of the previous claims claim 1 , characterized in that the share of flame-retardant substance in the cellulose fiber is between 5%-50 weight percent claim 1 , preferably between 10-30 weight percent and most ...

Method of Marking Cellulosic Products

Methods for marking cellulosic products, including cellulosic fibers such as lyocell and cellulosic films, including methods for marking such products with a detectable nucleic acid marker to identify and validate the origin or authenticity of the products or items manufactured using such products. Detectably-marked cellulosic products marked with nucleic acid markers for authentication, validation and tracking are also provided. 111-. (canceled)12. A method of authenticating a cellulosic product , comprising:adding a detectable nucleic acid marker to a cellulosic medium during the manufacturing process for a cellulosic product, said cellulosic medium containing at least a cellulosic material and a solvent; andthereby incorporating the detectable nucleic acid marker into the cellulosic product to provide a nucleic acid-marked cellulosic product;introducing the nucleic acid-marked cellulosic product into a stream of commerce;detecting the presence of the detectable nucleic acid marker in the cellulosic product via dissolving all or a portion of the nucleic acid-marked cellulosic product into a solution and performing a PCR based detection technique on a sample of said solution; andthereby authenticating the cellulosic product.13. The method according to claim 12 , wherein the detectable nucleic acid marker comprises a detectable DNA marker.14. The method according to claim 13 , wherein the detectable DNA marker is added to the cellulosic medium in an amount ranging from 1 nanogram to 1 microgram of DNA per kilogram of cellulosic material.15. The method according to claim 13 , wherein the detectable DNA marker is added to the cellulosic medium in an amount ranging from 0.1 nanograms to 10 micrograms of DNA per kilogram of cellulosic material.16. The method according to claim 13 , wherein at least one of N-methylmorpholine-N-oxide (NMMO) or sodium hydroxide is used to dissolve all or a portion of the nucleic acid-marked cellulosic product into a solution.17. The method ...

A METHOD FOR PREPARING REGENERATED CELLULOSE FIBERS HAVING ANTI-BACTERIA, ANTI-MITE AND ANTI-MOULD FUNCTIONS AND THE USE THEREOF

The present invention provides a method for preparing regenerated cellulose fibers having anti-bacteria, anti-mite and anti-mould functions from a fennel extract, a extract, and a thyme essential oil. The present invention also relates to the use of the regenerated cellulose fiber prepared by the above method in the field of anti-bacteria, anti-mite and mildew-resistant fabrics. The invention solves the technical defect that regenerated cellulose fibers have a single function and has poor anti-mite and anti-mould effects in the prior art. 1. A method for preparing a regenerated cellulose fiber having anti-bacterial , anti-mite and anti-mould functions , comprising the steps of:(1) preparing a composite slurry;(2) blending the composite slurry and a denatured cellulose spinning dope to prepare a blended spinning dope; and(3) spinning the blended spinning dope and performing a post-treatment, thereby producing the regenerated cellulose fiber.2. The method of claim 1 , wherein the composite slurry is prepared by a process comprising:{'i': Fructus Foeniculi', 'Litsea cubeba, 'i) blending a fennel () extract and a extract to obtain a blended powder;'}{'i': 'Thymus mongolicus Ronn.', 'ii) mixing the blended powder obtained in step i) with a thyme () essential oil to prepare an oily blended powder slurry and further emulsifying the oily blended power slurry to obtain an emulsion; and'}iii) reacting the emulsion obtained in step ii) with a urea-formaldehyde resin prepolymer to obtain the composite slurry.3Litsea cubeba. The method of claim 2 , wherein the fennel extract and the extract are blended in a mass ratio of 1:(0.5-1.5) in step i) claim 2 , and the particle size D90 of the blended powder is ≤1.568 μm.4. The method of claim 2 , wherein the mass ratio of the blended powder to the thyme essential oil in step ii) is (5-10):1.5. The method of claim 2 , wherein the emulsifying in step ii) is performed by adding the oily blended powder slurry into an aqueous system ...

REGENERATED CELLULOSE FIBER

The invention relates to a regenerated cellulose fiber in the form of a solid viscose flat fiber having the following properties: 1. A regenerated cellulose fiber in the form of a solid viscose flat fiber , wherein the fiber comprises the following properties:the fiber consists of cellulose by more than 98%.the ratio of width B to thickness D of the fiber is 10:1 or higher.the fiber surface is essentially smooth.the fiber is essentially transparent.2. The cellulose fiber according to claim 1 , wherein the fiber consists essentially of cellulose.3. The cellulose fiber according to claim 1 , wherein the ratio of width B to thickness D of the fiber is 20:1 or higher.4. The cellulose fiber according to claim 1 , wherein the Fiber is modified anionically.5. A fiber bundle claim 1 , comprising a plurality of cellulose fibers according to .6. The fiber bundle according to claim 5 , wherein the regenerated cellulose fibers of the fiber bundle have cross-sections and wherein the cross-sections of are essentially the same.7. A method of producing a cellulose fiber claim 1 , according to claim 1 , comprising the following steps:providing a viscose spinning dope,spinning the viscose spinning dope through at least one slot-shaped opening of a spinneret into a spinning bath, with spun filaments being formed,whereinthe viscose spinning dope contains a coagulation retarder, in particular polyethylene glycol,the ratio of length to width of the die slot is 10:1-30:1, preferably 15:1-25:1,{'sub': '2', 'the spinning bath exhibits an amount of HSO4 of 110-140 g/L, preferably 120-130 g/L,'}the spun filaments are drawn off with a die draft of 2.0-3.0,after leaving the spinning bath, the spun filaments are stretched at a ratio of 20%-35%, preferably 25-35%.8. A nonwoven fabric comprising the cellulose fiber claim 1 , according to .9. A paper comprising the cellulose fiber according to .10. The paper according to claim 9 , wherein the paper is transparent.11. The cellulose fiber according ...

PROCESS FOR PRETREATING RECLAIMED COTTON FIBERS TO BE USED IN THE PRODUCTION OF MOLDED BODIES FROM REGENERATED CELLULOSE

A process for pretreating reclaimed cotton fibers to be used in the production of molded bodies from regenerated cellulose characterized by effective metal redaction and adjustment of the degree of polymerization and brightness, including a metal removing stage and an oxidative bleaching stage of the reclaimed cotton fibers or pulp produced thereof. Reclaimed cotton fibers treated according to the described process may be used alone or in blends with conventional dissolving pulp as raw material for the production of molded bodies from regenerated cellulose. The process enables technically smooth, safe, and economically feasible spinning via the Viscose or Lyocell process, therefore, the current invention provides an efficient recycling pathway for cotton waste materials. 1. A process for pretreating reclaimed cotton fibers to be used in the production of molded bodies from regenerated cellulose , wherein the pretreatment of the reclaimed cotton fibers includes a metal removing stage and an oxidative bleaching stage.2. The process according to claim 1 , wherein the cotton fibers are reclaimed from pre-consumer cotton waste.3. The process according to claim 1 , wherein the cotton fibers are reclaimed from post-consumer cotton waste.4. The process according to claim 1 , wherein the reclaimed cotton fibers include pulp prepared from cotton rags.5. The process according to claim 1 , wherein the reclaimed cotton fibers are mechanically shredded claim 1 , milled claim 1 , or opened prior to their use.6. The process according to claim 1 , wherein the metal removing stage is an acidic washing treatment and/or a treatment with a complexing agent.7. The process according to claim 6 , wherein the reclaimed cotton fibers are treated by an aqueous solution of a complexing agent.8. The process according to claim 6 , wherein both treatments are combined in one step by adding a complexing agent to the acidic washing treatment.9. The process according to claim 1 , wherein the ...

Cellulosic fibers having enhanced reversible thermal properties and methods of forming thereof

A cellulosic fiber includes a fiber body including a cellulosic material and non-encapsulated phase change material dispersed within the cellulosic material. The non-encapsulated phase change material forms a plurality of distinct domains dispersed within the cellulosic material. The non-encapsulated phase change material has a latent heat of at least 40 Joules per gram and the cellulosic fiber has a latent heat between 9.8 Joules per gram and 132 Joules per gram and a transition temperature in the range of 0° C. to 100° C., and cellulosic fiber provides thermal regulation based on at least one of absorption and release of the latent heat at the transition temperature.

POLYSACCHARIDE FIBERS AND METHOD FOR PRODUCING SAME

The present invention relates to a method for the production of polysaccharide fibers which contain α(1→3)-glucan as a fiber-forming substance, as well as to the fibers made thereby, and to their use. 1. A method for the production of a polysaccharide fiber whose fiber-forming substance is α(1→3)-glucan , wherein the method is a modified viscose process.2. The method according to claim 1 , wherein at least 90% of the α(1→3)-glucan are hexose units and at least 50% of the hexose units are linked via α(1→3)-glycosidic bonds.3. The method according to claim 1 , wherein the fiber is a staple fiber or a continuous filament.4. The method according to claim 1 , wherein no more than 30% by weight of CS claim 1 , related to the fiber-forming substance claim 1 , is used.5. A polysaccharide fiber whose fiber-forming substance is α(1→3)-glucan claim 1 , wherein the polysaccharide fiber is produced using a modified viscose process.6. The fiber according to claim 5 , wherein at least 90% of the α(1→3)-glucan are hexose units and at least 50% of the hexose units are linked via α(1→3)-glycosidic bonds.7. The fiber according to claim 5 , wherein the fiber is a staple fiber or a continuous filament.8. A textile product comprising the fiber according to claim 5 , wherein the textile product is selected from the group consisting of yarns claim 5 , woven fabrics claim 5 , and knitted fabrics.9. A product comprising the fiber according to claim 5 , wherein the product is selected from the group consisting of nonwovens claim 5 , hygiene articles claim 5 , and of other claim 5 , absorbent nonwoven products and papers.10. The textile product according to claim 8 , wherein the fiber is a staple fiber or a continuous filament.11. The method according to claim 4 , wherein less than 25% by weight of CS claim 4 , related to fiber-forming substance is used.12. The method according to claim 11 , wherein less than 15% by weight of CS claim 11 , related to fiber-forming substance is used.13. The ...

MAN-MADE CELLULOSIC FIBER AND NONWOVEN PRODUCT OR FABRIC COMPRISING THE CELLULOSIC FIBER

The present invention relates to a modified cellulosic fiber that comprises anionic moieties in an amount of more than 0.25 mol/kg of dry fiber and has applied theron a polymeric modifying agent in an amount of from 0.5 wt. % to 5.0 wt. %, based on dry fiber, the polymeric modifying agent comprising cationic moieties with a charge of at least 1.5 meq per gram of polymer and the molar ratio of anionic moieties to cationic moieties contained in the fiber is in the range of from 1:1 to 25:1. The fiber according to the present invention is characterized in that the anionic moieties are incorporated in the fiber and are from carboxymethylcellulose, and that the polymeric modifying agent comprising cationic moieties is selected from the group consisting of polydiallyldimethylammonium chloride (poly-DADMAC), poly(acrylamide-co-diallyldimethylammonium chloride) (PAM-DADMAC) and mixtures thereof. The invention furthermore relates to a nonwoven product or fabric comprising the modified cellulosic fiber. (FIG. ) 1. A odified cellulosic fiber characterized in that:it comprises anionic moieties in an amount of more than 0.25 mol/kg of dry fiber and has applied theron a polymeric modifying agent in an amount of from 0.5 wt. % to 5.0 wt. %, based on dry fiber, the polymeric modifying agent comprising cationic moieties with a charge of at least 1.5 meq per gram of polymer, and the molar ratio of anionic moieties to cationic moieties contained in the fiber is in the range of from 1:1 to 25:1, characterized in that the anionic moieties are incorporated in the fiber and are from carboxymethylcellulose, and that the polymeric modifying agent comprising cationic moieties is selected from the group consisting of polydiallyldimethylammonium chloride (poly-DADMAC), poly(acrylamide-co-diallyldimethylammonium chloride) (PAM-DADMAC) and mixtures thereof.2. The modified cellulosic fiber according to claim 1 , characterized in that the cellulosic fiber is a man-made cellulosic staple fiber ...

PROCESS FOR PRETREATING RECLAIMED COTTON FIBERS TO BE USED IN THE PRODUCTION OF MOLDED BODIES FROM REGENERATED CELLULOSE

A process for pretreating reclaimed cotton fibers to be used in the production of molded bodies from regenerated cellulose characterized by effective metal redaction and adjustment of the degree of polymerization and brightness, including a metal removing stage and an oxidative bleaching stage of the reclaimed cotton fibers or pulp produced thereof. Reclaimed cotton fibers treated according to the described process may be used alone or in blends with conventional dissolving pulp as raw material for the production of molded bodies from regenerated cellulose. The process enables technically smooth, safe, and economically feasible spinning via the Viscose or Lyocell process, therefore, the current invention provides an efficient recycling pathway for cotton waste materials. 1. A process for pretreating reclaimed cotton fibers to be used in the production of molded bodies from regenerated cellulose , wherein the pretreatment of the reclaimed cotton fibers includes a metal removing stage and an oxidative bleaching stage.2. The process according to claim 1 , wherein the cotton fibers are reclaimed from pre-consumer cotton waste.3. The process according to claim 1 , wherein the cotton fibers are reclaimed from post-consumer cotton waste.4. The process according to claim 1 , wherein the reclaimed cotton fibers include pulp prepared from cotton rags.5. The process according to claim 1 , wherein the reclaimed cotton fibers are mechanically shredded claim 1 , milled claim 1 , or opened prior to their use.6. The process according to claim 1 , wherein the metal removing stage is an acidic washing treatment and/or a treatment with a complexing agent.7. The process according to claim 6 , wherein the reclaimed cotton fibers are treated by an aqueous solution of a complexing agent.8. The process according to claim 6 , wherein both treatments are combined in one step by adding a complexing agent to the acidic washing treatment.9. The process according to claim 1 , wherein the ...

Method of Marking Cellulosic Products

Methods for marking cellulosic products, including cellulosic fibers such as lyocell and cellulosic films, including methods for marking such products with a detectable nucleic acid marker to identify and validate the origin or authenticity of the products or items manufactured using such products. Detectably-marked cellulosic products marked with nucleic acid markers for authentication, validation and tracking are also provided.

PROCESS FOR THE PRODUCTION OF A TREATED PULP, TREATED PULP, AND TEXTILE FIBRES PRODUCED FROM THE TREATED PULP

The present invention relates to a process for the production of treated pulp comprising the steps of: i. providing a fibre source material; ii. subjecting the fibre source material to pre-hydrolysis; iii. subjecting the pre-hydrolysed fibre source material to alkaline chemical pulping process, preferably kraft pulping, to obtain an alkaline pulp; iv. optionally adjusting the pH of the obtained pulp to above pH 9; v. subjecting the alkaline pulp to a bleaching sequence comprising contacting the pulp with ozone (Z) in alkaline conditions to obtain a treated pulp. The invention also relates to a treated pulp obtained, textile fibres produced from the treated pulp, textile products comprising the textile fibres and to the use of the treated pulp. 1. A process for the production of treated pulp comprising the steps of:i. providing a fibre source material;ii. subjecting the fibre source material to pre-hydrolysis;iii. subjecting the pre-hydrolysed fibre source material to an alkaline chemical pulping process to obtain an alkaline pulp;iv. optionally adjusting the pH of the alkaline pulp to above pH 9; andv. subjecting the alkaline pulp to a bleaching sequence comprising contacting the alkaline pulp with ozone (Z) in alkaline conditions to obtain a treated pulp.2. The process according to claim 1 , wherein the process further comprises a step of withdrawing pre-hydrolysate liquor after step (ii).3. The process according to claim 1 , wherein the bleaching sequence comprises the step of contacting the alkaline pulp with oxygen (O) prior to contacting the alkaline pulp with ozone (Z) in alkaline conditions.4. The process according to claim 3 , wherein the step of contacting the alkaline pulp with oxygen (O) is performed as a double step (OO) in two separate steps.5. The process according to claim 4 , wherein the first oxygen step in the double step is shorter than the second oxygen step.6. The process according to claim 1 , wherein the bleaching sequence comprises a step of ...

FLAME RETARDANT CELLULOSIC MAN-MADE FIBERS

A process for the production of an oxidized polymer from a tetrakis hydroxyalkyl phosphonium compound comprising NHor at least one nitrogen compound comprising at least one NHor at least two NH groups, or NH, comprising the steps of: (a) reacting at least one tetrakis hydroxyalkyl phosphonium compound with NHor at least one nitrogen compound in order to obtain a precondensate, wherein the molar ratio of the tetrakis hydroxyakyl phosphonium compound to the nitrogen compound is in the range of 1:(0.05 to 2.0), preferably in the range of 1:(0.5 to 1.5), particularly preferably in the range of 1:(0.65 to 1.2), (b) crosslinking the precondensate obtained in process step (a) with the aid of ammonia to form a crosslinked polymer, (c) oxidizing the crosslinked polymer obtained in step (b) by adding an oxidizing agent to the oxidized polymer, wherein, in step (b), the precondensate from step (a) and the ammonia are each injected by means of a nozzle into a reactor space enclosed by a reactor housing onto a common collision point. 1. A process for the production of an oxidized polymer from a tetrakis hydroxyalkyl phosphonium compound comprising NHor at least one nitrogen compound comprising at least one NHor at least two NH groups , or NH , comprising the steps of:{'sub': '3', '(a) reacting at least one tetrakis hydroxyalkyl phosphonium compound with NHor at least one nitrogen compound in order to obtain a precondensate, wherein the molar ratio of the tetrakis hydroxyalkyl phosphonium compound to the nitrogen compound is in the range of 1:(0.05 to 2.0),'}(b) crosslinking the precondensate obtained in process step (a) with the aid of ammonia to form a crosslinked polymer,(c) oxidizing the crosslinked polymer obtained in step (b) by adding an oxidizing agent to the oxidized polymer wherein,in step (b), the precondensate from step (a) and the ammonia are each injected by means of a nozzle into a reactor space enclosed by a reactor housing onto a common collision point.2. The ...

METHODS FOR PRODUCING A VISCOSE DOPE FROM MICROBIAL CELLULOSE

A method for producing a microbial cellulose pulp for the production of viscose dope, the method comprising the step of: exposing a microbial cellulose to a volume of water to form the microbial cellulose pulp for the production of viscose dope, wherein the cellulose concentration in the microbial cellulose pulp is less than 0.040 g of cellulose per mL of pulp. 1. A method for producing a microbial cellulose pulp for the production of viscose dope , the method comprising the step of:exposing a microbial cellulose to a volume of water to form the microbial cellulose pulp for the production of viscose dope, wherein the cellulose concentration in the microbial cellulose pulp is less than 0.040 g of cellulose per mL of pulp2. A method according to claim 1 , wherein after the step of exposing a microbial cellulose to a volume of water to form the microbial cellulose pulp claim 1 , the method comprises the step of:homogenising the microbial cellulose pulp.3. A method for producing a viscose dope claim 1 , the method comprising the steps of:exposing a microbial cellulose to a volume of water to form a microbial cellulose pulp for the production of viscose dope, wherein the cellulose concentration in the microbial cellulose pulp is less than 0.040 g of cellulose per mL of pulp;reacting the microbial cellulose pulp to produce a viscose dope.4. A method according to characterised in that claim 3 , prior to the step of reacting the microbial cellulose pulp to produce a viscose dope claim 3 , the method comprises the step of:homogenising the microbial cellulose pulp.5. A method according to characterised in that the step of homogenising the microbial cellulose pulp comprises the step of:homogenising the microbial cellulose pulp such that the particle size distribution of the particles of cellulose in the pulp has a D90 of less than 1700 μm, preferably less than 1500 μm, more preferably less than 1000 μm.6. A method according to or characterised in that the step of homogenising ...

Solvent-spun cellulosic fiber

The present invention relates to a cellulosic fiber of the lyocell genus. The fiber according to the invention has the following properties: a) the fiber has a content of hemicellulose of 5 wt. % or more b) the fiber is characterized by the Hoeller factors F1 and F2 as follows: Hoeller factor F1≥0.7+x and ≤1.3+x Hoeller factor F2≥0.75+(x*6) and ≤3.5+(x*6) wherein x is 0.5 if the fiber does not contain a matting agent and x is 0 if the fiber does contain a matting agent, and if x is 0.5, the fiber is essentially free from any incorporation agent.

Process for pretreating reclaimed cotton fibres to be used in the production of moulded bodies from regenerated cellulose

A process for pretreating reclaimed cotton fibres to be used in the production of moulded bodies from regenerated cellulose, characterized by effective metal reduction and adjustment of the degree of polymerization and brightness, including a metal removing stage and an oxidative bleaching stage of the reclaimed cotton fibres or pulp produced thereof. Reclaimed cotton fibres treated according to the described process may be used alone or in blends with conventional dissolving pulp as raw material for the production of moulded bodies from regenerated cellulose. The process enables technically smooth, safe, and economically feasible spinning via the Viscose or Lyocell process, therefore, the current invention provides an efficient recycling pathway for cotton waste materials.

ANTI-COUNTERFEITING MODAL FIBER, PREPARATION METHOD AND ANTI-COUNTERFEITING METHOD

The invention relates to a method for preparing an anti-counterfeiting modal fiber, including: mixing a pulp stock solution with a cellulose catalyst, alkalizing, aging, sulfonating, and then dissolving the pulp stock solution in an alkaline solution to obtain a treatment solution; mixing the treatment solution with multiple amino acid-metal chelates, filtering, defoaming and ripening to obtain a spinning stock solution; and mixing the spinning stock solution with a spinning bath additive, and wet spinning, followed by drafting, defoaming, desulfurizing, water washing, and other post-treatments, to obtain an anti-counterfeiting modal fiber, wherein the amino acid metal-chelates account for 0.5%-1.5% by weight of the spinning stock solution. Amino acid-metal chelates are used to anti-counterfeit and encrypt the modal fibers, and the anti-counterfeiting and encrypting is involved in the spinning stock solution of modal fibers. The fiber source can be tracked and identified by detecting the species of metal elements and amino acids.

一种防螨抑菌再生纤维素纤维的制备方法

本发明提供了一种防螨抑菌再生纤维素纤维的制备方法，先将印楝油和光触媒助剂锐钛型纳米TiO 2 混合后微胶囊化，将制得微胶囊分散后再与粘胶纺丝液混合进行纺丝，制得具有防螨功能的再生纤维素纤维。本发明将含有印楝素和纳米TiO2的微胶囊添加到纺丝液中纺丝得到粘胶纤维具有较好的驱螨抑菌效果，二者的相容性较好，同时能够发挥较好的协同作用。

Manufacturing method of rayon -type activated carbon fiber using potassium permanganate

The present invention relates to a method for manufacturing rayon activated carbon fiber using potassium permanganate. The present invention includes a raw material preparation step, a dipping solution preparation, a dipping step, a washing step, a drying step, an oxidation stabilization step, and a carbonization activation step. The present invention improves efficiency of ACF manufacture.

Способ и устройство для формирования целлюлозного полотна методом прямого формования

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2019 111 062 A (51) МПК D04H 1/4258 (2012.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2019111062, 18.10.2017 (71) Заявитель(и): ЛЕНЦИНГ АГ (AT) Приоритет(ы): (30) Конвенционный приоритет: 21.10.2016 AT A490-2016 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 21.05.2019 R U (43) Дата публикации заявки: 23.11.2020 Бюл. № 33 (72) Автор(ы): АЙНЦМАНН, Мирко (AT), ХАЙХЮРСТ, Малкольм (GB), САГЕРЕР-ФОРИК, Ибрагим (AT) (86) Заявка PCT: (87) Публикация заявки PCT: WO 2018/071928 (26.04.2018) R U (54) СПОСОБ И УСТРОЙСТВО ДЛЯ ФОРМИРОВАНИЯ ЦЕЛЛЮЛОЗНОГО ПОЛОТНА МЕТОДОМ ПРЯМОГО ФОРМОВАНИЯ (57) Формула изобретения 1. Способ получения полотна на целлюлозной основе непосредственным формованием из прядильного раствора лиоцелла, предусматривающий: a. стадию экструзии с применением экструзионного устройства (1), способного экструдировать множество нитей из раствора лиоцелла, в частности, расположенных в один или несколько рядов с образованием завесы, а также способного вытягивать нити из раствора, b. стадию первого промывания, осуществляемую в первой промывочной зоне приспособлением (7), подающим промывочную жидкость на нити из раствора непосредственно после вытяжения и перед формованием полотна, в результате чего получают частично коагулированные целлюлозные волокна, с. стадию формования полотна, осуществляемую в зоне формования полотна устройством (4) формования полотна, на котором частично коагулированные волокна укладывают с получением полотна (11), причем устройство (4) формования полотна имеет достаточную пористость для прохождения через него газового потока и промывочной жидкости, d. стадию второго промывания, осуществляемую во второй промывочной зоне промывочным устройством (5), которое содержит многосекционные промывочные модули (2), причем e. каждый промывочный модуль (2) содержит приспособление (9) для нанесения Стр.: 1 A 2 0 1 9 1 1 1 0 6 2 A Адрес для переписки: ...

A kind of viscose rayon and preparation method thereof containing tracer label

本发明涉及一种含有示踪剂标记的粘胶纤维及其制备方法，包括制备示踪剂分散液，并通过纺前注射管道，将该分散液与纺丝粘胶原液，经静态混合器、动态混合器连续共混，混合均匀后，再同时进入纺丝设备纺丝，经牵伸、切断、水洗、脱硫、上油、脱水、烘干等工序后制得含有示踪剂标记的粘胶短纤维。本发明采用稀土金属螯合物为示踪剂，识别方法简便，添加量少，成本低，易于工业化生产，有利于保护产品品牌和消费者利益。

High-efficiency antibacterial antiviral isatis root fiber and preparation method thereof

本发明提供一种高效抗菌抗病毒板蓝根纤维，所述粘胶纤维，板蓝根微胶囊的含量为9.1‑9.79%，纤维的干断裂强度为2.70‑2.75cN/dtex，湿断裂强度为1.70‑1.75cN/dtex，断裂伸长率为22‑23%，对金黄色葡萄球菌抑菌率99.0%‑99.8%，对白色念珠菌的抑菌率为96.6‑98.8%、对伤寒杆菌抑菌率为97.2%‑99.1%，对甲型流感病毒、乙型流感病毒有很强的抑制杀灭作用；本发明还提供一种含板蓝根提取物的粘胶纤维的制备方法，包括板蓝根微胶囊的改性；本发明减少纤维制备过程中板蓝根微胶囊的流失，降低凝固浴滤器的拆台反洗率；提高板蓝根微胶囊在纤维中分布的均匀度。

Cellulosic fibers having enhanced reversible thermal properties and methods of forming thereof

A viscose fiber comprises a fiber body including a regenerated cellulosic material and a plurality of microcapsules dispersed in the regenerated cellulosic material. The regenerated cellulosic material is derived from an organic plant material and the plurality of microcapsules containing a phase change material has a transition temperature in the range of 0° C. to 100° C., the phase change material providing thermal regulation based on at least one of absorption and release of latent heat at the transition temperature.

Tampon including crosslinked cellulose fibers and improved synthesis processes for producing same

탐폰 거즈는 개선된 흡수성 및 보다 높은 습윤 강도를 제공하도록 처리된 미세구조를 갖는 가교결합된 셀룰로즈 섬유를 포함한다. 섬유를 가교결합제로 처리하여 약 10 내지 200의 가교결합 간의 분자량 및 약 25% 내지 75%의 결정화도 중의 적어도 하나를 제공한다. 가교결합제는 시트르산을 1중량%로 포함한다. 가교결합제는 차아인산나트륨을 1중량%로 추가로 포함할 수 있다. 또 다른 양태에서, 가교결합제는 글리옥살 또는 글리옥살-유도된 수지를 포함한 이관능성 제제일 수 있다. 여전히 또 다른 양태에서, 가교결합제는 사이클릭 우레아, 글리옥살, 폴리올 축합물을 포함하는 다관능성 제제이다. 가교결합제는, 처리하고자 하는 셀룰로즈 섬유의 총 중량을 기준으로 하여, 약 0.001 내지 20중량%의 양으로, 바람직하게는 약 5중량%의 양으로 첨가된다. Tampon gauze includes crosslinked cellulose fibers having microstructures that have been treated to provide improved absorbency and higher wet strength. The fibers are treated with a crosslinker to provide at least one of a molecular weight between the crosslinks of about 10 to 200 and a degree of crystallinity of about 25% to 75%. The crosslinker comprises 1% by weight citric acid. The crosslinker may further comprise 1% by weight sodium hypophosphite. In another embodiment, the crosslinker can be a bifunctional agent comprising glyoxal or glyoxal-derived resin. In yet another embodiment, the crosslinker is a multifunctional agent comprising cyclic urea, glyoxal, polyol condensates. The crosslinker is added in an amount of about 0.001 to 20% by weight, preferably in an amount of about 5% by weight, based on the total weight of the cellulose fibers to be treated.

Patent RU2019111062A3

7 ВУ’ ’ 2019111062`” АЗ Дата публикации: 10.03.2021 Форма № 18 ИЗПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2019111062/03(021486) 18.10.2017 РСТ/АТ2017/000071 18.10.2017 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. А490-2016 21.10.2016 АТ Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) СПОСОБ И УСТРОИСТВО ДЛЯ ФОРМИРОВАНИЯ ЦЕЛЛЮЛОЗНОГО ПОЛОТНА МЕТОДОМ ПРЯМОГО ФОРМОВАНИЯ Заявитель: ЛЕНЦИНГ АГ, АТ 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. Примечания) [ ] приняты во внимание следующие пункты: [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) РодН 1/4258 (2012.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) РО4Н 1/4258, РО4Н 3/013, ОТО 5/00 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): РУ/РТ, ЕАРАТГУ, Ебрасепе, РАТЕМТЗСОРЕ, Рабеагсв, КОРТО, ИЗРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) частей, Относится к гория* относящихся к ...

Anti-counterfeiting viscose fiber, preparation method and anti-counterfeiting method

本发明涉及一种防伪粘胶纤维的制备方法，包括以下步骤：将浆粕浸渍于碱的水溶液中，然后进行压榨、粉碎和老成处理，冷却后进行磺化处理，处理后溶于稀碱溶液，得到粗制粘胶；将粗制粘胶与多种氨基酸金属螯合物混匀，经消泡、熟成处理后制得纺丝原液；将纺丝原液进行湿法纺丝，酸浴后，经过牵伸、切断、精炼、上油和烘干处理得到防伪粘胶纤维；其中，氨基酸金属螯合物所含金属元素质量之和占防伪粘胶纤维质量分数的0.3‑1.1‰。本发明的防伪粘胶纤维利用多种氨基酸金属螯合物对粘胶纤维进行防伪加密处理，通过对金属元素和氨基酸种类的检测和编码进行防伪识别，防伪程度高，防伪隐蔽性好。

Preparation method of moisture-absorbing and breathable basement membrane

本发明涉及一次性卫生用品技术领域，提供一种吸湿透气底膜的制备方法，包括以下步骤：a.改性粘胶纤维的制备；b.改性涤纶纤维的制备；c.水刺无纺布的制备；d.淋膜层的制备；e.拒水处理。其解决现有技术透气膜的透气量大时，容易出现漏尿风险，使纸尿裤外面的裤子发潮的问题。

Preparation method of regenerated cellulose fiber with antibacterial and mosquito repellent functions

本发明提供了一种抗菌驱蚊再生纤维素纤维的制备方法，先将天然桉叶油通过基础油稀释后制备成纳米微胶囊，再将纳米微胶囊预分散后与粘胶纺丝液充分混合，然后进行湿法纺丝制备得到具有抗菌驱蚊功能的再生纤维素纤维。所得纤维不仅具有杀菌抑菌、灭蚊驱蚊的功效，相对于传统的面料后整理的方法，以该纤维为原料制成的纺织产品的具有更好的手感。

A kind of flame retardant viscose fiber and preparation method thereof

本发明公开了一种阻燃粘胶纤维，按照重量百分比组成为：α‑纤维素60～78％，粘胶溶液8～12％，粘胶助剂1～2％，硅系阻燃剂5～12％，水10～15％，油剂0.5～0.8％，增稠剂0.5～1％，其中，所述硅系阻燃剂为硅溶胶阻燃剂和纳米二氧化硅阻燃剂的混合物，所述硅溶胶占4～10％，所述纳米二氧化硅阻燃剂占1～2％。本发明还公开了上述阻燃粘胶纤维的制备方法。本发明中的粘胶纤维具有良好的可纺性，同时还具有耐热、阻燃的特点。

Anti-counterfeiting viscose fiber, preparation method and anti-counterfeiting method

本发明涉及一种防伪粘胶纤维的制备方法，包括以下步骤：将浆粕浸渍于碱的水溶液中，然后进行压榨、粉碎和老成处理，冷却后进行磺化处理，处理后溶于稀碱溶液，得到粗制粘胶；将粗制粘胶与多种氨基酸金属螯合物混匀，经消泡、熟成处理后制得纺丝原液；将纺丝原液进行湿法纺丝，酸浴后，经过牵伸、切断、精炼、上油和烘干处理得到防伪粘胶纤维；其中，氨基酸金属螯合物所含金属元素质量之和占防伪粘胶纤维质量分数的0.3‑1.1‰。本发明的防伪粘胶纤维利用多种氨基酸金属螯合物对粘胶纤维进行防伪加密处理，通过对金属元素和氨基酸种类的检测和编码进行防伪识别，防伪程度高，防伪隐蔽性好。

Amber regenerated cellulose fiber and preparation method thereof

本发明公开了一种琥珀再生纤维素纤维及其制备方法，所述纤维通过松油脂纳米粉和粘胶纺丝液混合后纺丝制成。本发明通过在再生纤维素纤维中加入纳米松油脂，利用松油脂自身较低的熔点，在纤维热水浴牵伸时，纤维中均匀分布的纳米松油脂会发生物理熔融，与纤维大分子链间产生交联作用，从而能够大大改善纤维强度，减少吸湿膨胀，提高再生纤维素纤维的尺寸稳定性；同时松油脂作为天然交联剂，解决了化学交联所带来的毒性问题，绿色环保无污染；将松油醇和松节油整理附着在纤维表面，提高了纤维的防腐抗菌的性能；本发明的制备工艺简便，容易实现，无需外加试剂，在常温条件下即可进行，能耗低，可以广泛应用于实际生产。

Method and apparatus for the formation of directly formed cellulosic webs

본 발명은 라이오셀(lyocell) 방사 용액으로부터 직접 형성되는 셀룰로스-계열 웹을 제조하고, 특히 직접 형성된 셀룰로스 웹을 세척하기 위한 방법 및 장치에 관한 것이다.

A kind of colorful flame-retardant fiber and preparation method thereof

本发明公开了一种彩色阻燃纤维及其制备方法，包括：16～19wt％的阻燃剂和0.1～4wt％的着色剂，其余部分为人造纤维；所述阻燃剂包括磷系阻燃剂和包裹于磷系阻燃剂中的硅系阻燃剂的，硅系阻燃剂与磷洗阻燃剂的质量比为1:7～11，二者的粒径比为2～5:1。其制备方法为：所述制备方法选取纺丝原液从溶解至纺丝间的任一工序，向其中加入阻燃剂与着色剂混合液，再经纺丝、后处理制备得到所述的彩色阻燃纤维。本发明提供的彩色阻燃纤维中对阻燃剂的成分进行了充分改进，提高了硅系阻燃剂与纤维的相容性，使得该彩色阻燃纤维具有色牢度高、阻燃效果好等优点。

Flame-retardant mixed yarn and its use for textile webs made from it

Apparatus for cutting and mixing

Methods and Apparatus for Forming Direct Forming Cellulosic Webs

본 발명은 라이오셀(lyocell) 방사 용액으로부터 직접 형성되는 셀룰로스-계열 웹을 제조하고, 특히 직접 형성된 셀룰로스 웹을 세척하기 위한 방법 및 장치에 관한 것이다. The present invention relates to a method and apparatus for producing a cellulosic-based web formed directly from a lyocell spinning solution, and in particular for cleaning a directly formed cellulosic web.

The preparation method and gained home wear of a kind of okra coloured viscose rayon

本发明公开了一种黄秋葵有色粘胶纤维的制备方法及所得家居服，属于纺织技术领域，步骤包括采摘纤维化的黄秋葵经备料，制备纳米纤维，碱化，黄化，溶解，过滤，脱泡，纺丝，后处理工艺制备成粘胶纤维及家居服，本发明以黄秋葵为原料制备粘胶纤维家居服，为粘胶纤维的制备提供了一种新原料，丰富了粘胶纤维的多样性，缓解了粘胶纤维资源的不足，并且变废为宝，发挥了纤维化的黄秋葵的附加值，挽回农户损失，并为实现增收创造条件；本发明的粘胶纤维自带颜色无需进行后期染色，避免了染色过程中的化学试剂残留造成对皮肤的伤害。

A kind of antibacterial mite-resistant cellulose viscose and preparation method containing sophora alopecuroides extract

本发明公开了一种含苦豆子提取物的抗菌防螨粘胶纤维及制备方法，涉及纺织品及纺织工艺技术领域，其由150‑180份粘胶纤维纺丝原液与2‑6份水溶性壳聚糖季铵盐及0.02‑0.04份防螨剂混合后再加入4‑6份混合物水溶液混合后经湿法纺丝工艺喷丝、凝固、水洗、上油、干燥而得，所述混合物水溶液含有竹炭粉，经超声醇提萃取而得的苦豆子生物碱提取物及百部提取物。本发明的纤维在减少原料种类及成本的基础上得到具抗菌防螨作用的纤维，用于制备内衣及家居服能够极大满足人们对纺织品良好使用性能的追求，极具市场经济潜力。

A kind of process for producing high-wet-modulus fibre cellulose fiber

本发明提供一种生产高湿模量纤维素纤维的工艺方法，所述方法包括二次浸渍步骤。所述二次浸渍步骤在老成步骤之后，黄化步骤之前。本发明采用的特殊工艺，可以降低老成过程中再次产生的半纤维素，进一步提高黄化时甲种纤维素纯度，改善黄化效果；本发明采用在纺丝前加入氧化锌，在凝固成型过程中，加速了粘胶中纤维素黄酸锌的生产，延缓成型，抑制再生纤维素大分子的结晶化作用，锌离子晶核作用，在粘胶细流表面形成高密度的小而分散晶的区；特别是当加入的氧化锌加入量为1.2‑2.0%时，可以最大限度的提升纤维强力、模量。

Preparation method of low-odor viscose fibers

本发明涉及化纤加工技术领域，尤其是涉及一种低气味粘胶纤维的制备方法，选择白度和甲纤含量高、多戊糖含量低的溶解木浆浆粕为原料，制备粘胶纺丝原液，并与二氧化钛分散液混合均匀后送入纺丝机，凝固再生出初生纤维；初生纤维经牵伸、取向形成具有一定强度的纤维经切断后进入绒毛槽、精炼机，并采用脱硫、水洗、漂白、上油、烘干等后处理工艺制得低气味粘胶纤维。本发明制备的低气味粘胶纤维，其白度较高、疵点含量极低、残硫量极少、气味低，可用于对气味要求严格的无纺布和医疗卫材领域；本发明有利于解决粘胶纤维在干巾领域应用时产生的异味问题，从而拓宽粘胶纤维的应用领域。

A kind of composite fibre and preparation method thereof comprising gold and silver boisiana extract

本发明涉及一种包含金银藤提取物的复合纤维及其制备方法。所述制备方法包括：(1)制备金银藤提取物混合溶液：取金银藤提取物、分散剂和交联剂依次加入水中，均匀混合后加热并保温，完毕后过滤，取上清液，得金银藤提取物混合溶液；(2)制备粘胶纺丝液：将浆粕经浸渍、压榨、粉碎、老成、黄化、溶解、过滤和脱泡工艺，得粘胶纺丝液；(3)纺丝：将步骤(1)所得金银藤提取物混合溶液与步骤(2)所得粘胶纺丝液通过纺前注射均匀混合，完毕后进行纺丝即得包含金银藤提取物的复合纤维。所述复合纤维具有优异的力学性能，其中干断裂强度为2.35～2.38CN/dtex、湿断裂强度为1.28～1.36CN/dtex和干断裂伸长率为17.3～20.5％。

Antibacterial and antiviral fiber of wormwood plant and preparation method thereof

本发明属于功能性纺织品领域，具体地说，涉及一种艾草植物抗菌抗病毒纤维及其制备方法，包括：(1)制备艾草精油包合物；(2)将制备的艾草精油包合物加入到酸浴中，混合均匀；(3)制备粘胶纺丝原液，在粘胶纺丝原液中加入交联剂，搅拌均匀后，喷入酸浴中进行纺丝，制得艾草植物抗菌抗病毒纤维。纤维的干断裂强力为2.5‑15.4cN，抗菌级别达AAA级，水洗50次后H1N1抗病毒活性值≥2.0。本发明的制备方法工艺简单，能够充分利用艾草的抗菌物质，纤维的抗菌效果持久，具有良好的耐洗涤性，可广泛用于个人卫生防护等领域。

Sarcandra glabra antibacterial and antiviral cellulose fiber with good hygroscopicity and preparation method thereof

本发明提供一种吸湿性好的草珊瑚抗菌抗病毒纤维素纤维的制备方法，包括制备硅酸复合胶体步骤；所述的制备硅酸复合胶体：将硅酸钠水溶液与透明质酸钠、淀粉顺丁二酸单酯混合均匀，加入交联剂N，N，‑亚甲基双丙烯酰胺，和聚合引发剂过硫酸钠，得到混合物料。本发明制备的抗菌抗病毒纤维，纤维的干断裂强度2.80‑2.85cN/dtex，吸湿性好。

Preparation method for preparing natural-color bamboo cellulose fibers by using natural-color bamboo fiber pulp

本发明公开了一种采用本色竹纤浆粕制备本色竹纤维素纤维的制备方法，包括以下步骤：步骤一，备料；步骤二，蒸煮；步骤三，水洗；步骤四，打浆；步骤五，浓缩抄造；步骤六，一次浸渍；步骤七，压榨；步骤八，老成；步骤九，二次浸渍；步骤十，黄化；步骤十一，纺丝；步骤十二，牵伸；步骤十三，后处理；本发明节能环保，制备的本色竹纤维素纤维的物理指标良好，超过了现有技术中制备的竹纤维素纤维的性能；制备的本色竹纤浆粕白度较低，呈现竹子的淡黄本色，是一种更为自然、更能保持竹子原本特征的生产方法，符合现代人的审美观念。

Method of marking cellulosic products

Methods for marking cellulosic products, including cellulosic fibers such as lyocell and cellulosic films, including methods for marking such products with a detectable nucleic acid marker to identify and validate the origin or authenticity of the products or items manufactured using such products. Detectably-marked cellulosic products marked with nucleic acid markers for authentication, validation and tracking are also provided.

Method for hydrocellulose bundle production

FIELD: chemistry. SUBSTANCE: method for hydratocellulose bundle production, characterized by dilution of sulfite or sulfate cellulose with cellulose mass fraction αof at least 94% and polymerization degree of 800-900 in a previously prepared concentrated phosphoric acid, represented by an orthophosphoric acid mixture containing 14-15 wt % of pyrophosphoric acid. The prepared concentrated phosphoric acid is fed into the sealed reactor capacity, heated to a temperature of 40-45°C at stirring with the activator speed rotation of the 1-5 rpm for 30-40 min and without changing the rotator speed, the cellulose crushed to fluff is loaded for 15 minutes, then stirring is continued at a speed of 40-50 rpm during 20-25 minutes at a temperature of 40°C till the stage of loose cellulose suspension formation at simultaneous evacuation of the sealed reactor capacity at a residual pressure of 0.01 MPa, the resulting cellulose suspension is cooled for 60-70 minutes to a temperature of minus 10 to minus 12°C with liquid nitrogen feeding into the reactor jacket, as a cooling agent, with cellulose suspension transfer to the gel-like state of spinning solution with a viscosity of 10.000-15.000 Pa⋅s, then the resulting highly viscous gel-like spinning solution is fed to the extrusion unit, heated to a temperature of 25-35°C and supplied with a gear pump in a volume of 10 cm of high-viscosity gel-like spinning solution of cellulose for 1 pump revolution, and fed for filtration into a flat filter in the form of a three-layer stainless steel grid of, then a high-viscosity gel-like spinning solution of cellulose with phosphoric acid mass fraction (H 3 PO 4 +H 4 P 2 O 7 ) of 73-74% in terms of P2O5, cellulose mass fraction of 17.0-17.2%, with spinning solution viscosity of 1000-1500 Pa⋅S at a temperature of 25-35°C is extruded through a spinneret with 1180 holes with a diameter of 60 mcm through an air gap of 1 to 20 mm into the coagulation zone of the precipitation bath for hydrocellulose ...

A kind of high-intensity fine denier flame retardant viscose fiber and its production technology

本发明提供一种高强度细旦阻燃粘胶纤维及其生产工艺，所述的粘胶纤维是将阻燃剂加入分散剂研磨成阻燃剂浆料后加入到纺丝液中经纺丝、牵伸及后处理得到具有下述性能指标的纤维：干断裂强度≥2.7cn/dtex、干断裂伸度13‑20%、产品纤度≥0.8D、极限氧指数≥30%、续燃时间≤3秒，阴燃时间≤3秒。该阻燃粘胶纤维强度高，阻燃性优良，纤维纤度可达0.8D，填补国内了细旦阻燃纤维的空白。

Colored viscose fiber house clothes of okra

本发明公开了一种黄秋葵有色粘胶纤维家居服，属于纺织技术领域，步骤包括采摘纤维化的黄秋葵经备料，制备纳米纤维，碱化，黄化，溶解，过滤，脱泡，纺丝，后处理工艺制备成粘胶纤维及家居服，本发明以黄秋葵为原料制备粘胶纤维家居服，为粘胶纤维的制备提供了一种新原料，丰富了粘胶纤维的多样性，缓解了粘胶纤维资源的不足，并且变废为宝，发挥了纤维化的黄秋葵的附加值，挽回农户损失，并为实现增收创造条件；本发明的粘胶纤维自带颜色无需进行后期染色，避免了染色过程中的化学试剂残留造成对皮肤的伤害。

Inorganic flame-retardant intelligent temperature-adjusting cellulose fiber and preparation method thereof

本发明提供一种无机阻燃智能调温纤维素纤维，所述纤维，熔融焓值为24‑25J/g、熔融温度为29‑33℃，结晶焓值为22.5‑23.0J/g，结晶温度范围18‑21℃；本发明还提供上述纤维的制备方法，本发明制备的相变调温纤维素纤维，纤维中相变材料微胶囊的含量为10.4‑10.6%，本发明制备的无机阻燃调温纤维，极限氧指数达到35%以上，阻燃性能优良。

Artificial cellulose fibre and nonwoven product or material containing cellulose fibre

FIELD: chemistry. SUBSTANCE: invention relates to modified cellulose fibre and a method for production thereof, as well as to a nonwoven product and paper containing said fibre. Fibre contains anionic parts in amount of more than 0.25 mol/kg of dry fibre and contains polymer modifying agent applied thereon in amount of 0.5–5.0 wt. % of weight of dry fibre. Polymer modifying agent contains cationic parts with charge making at least 1.5 mcg-equivalent/g of polymer, and molar ratio of anionic parts and cationic parts contained in fibre ranges from 1:1 to 25:1. At that, anionic parts are introduced into fibre and consist of carboxymethyl cellulose, and polymer modifying agent containing cationic parts, is selected from a group consisting of polydiallyldimethylammonium chloride (polyDADMAC), polyacrylamide-co-diallyldimethylammonium chloride) (PAM-DADMAC) and mixtures thereof. EFFECT: technical result of the invention is the creation of said fibre, which provides for the possibility of reversible fibre bonding with fibre and/or re-dispersion of fibres in liquids or water-based liquid without significant reduction in strength of paper or non-woven products. 17 cl, 1 dwg, 11 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) (19) RU (11) (13) 2 732 131 C1 (51) МПК D06M 15/356 (2006.01) D04H 1/4258 (2012.01) D04H 3/013 (2012.01) D21C 9/00 (2006.01) D21H 11/20 (2006.01) D21H 13/08 (2006.01) D01F 2/08 (2006.01) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК D06M 15/356 (2020.05); D04H 1/4258 (2020.05); D04H 3/013 (2020.05); D21C 9/00 (2020.05); D21H 11/20 (2020.05); D21H 13/08 (2020.05); D01F 2/08 (2020.05) (21)(22) Заявка: 2019115844, 27.10.2017 27.10.2017 Дата регистрации: 11.09.2020 27.10.2016 EP 16196098.4 (56) Список документов, цитированных в отчете о поиске: WO 0129309 A1, 26.04.2001. WO 0039398 A1, 06.07.2000. GB 1394553 A1, 21.05.1975. RU 2226229 C2, 27.03.2004. RU 2514760 C2, 10.05.2014. (45) Опубликовано: 11.09.2020 Бюл. № 26 (85) ...

Composite fiber fabric

本发明公开了一种复合纤维织物，属于纺织领域。本发明的一种复合纤维织物，包括混纺层，所述混纺层的上表面覆有碳纤维-聚醚型聚氨酯层，所述混纺层的下表面覆有丁烯酸酯-接枝淀粉层，所述碳纤维-聚醚型聚氨酯层的厚度为400μm，所述混纺层的厚度为0.2cm，所述丁烯酸酯-接枝淀粉层的厚度为600μm。本发明的一种复合纤维织物具有在满足人体穿着舒适度的同时，具有良好隔热保暖，防水耐热特性的特点。

Process of manufacturing filaments from viscose.

Process for producing a yarn, process for producing a nonwoven and nonwoven

Die Erfindung betrifft ein Verfahren zur Herstellung eines Garnes aus einer Spinnmasse. Erfindungsgemäß umfasst die Spinnmasse ein partikelförmiges Silikat-Aerogel, welches vor oder bei einem Spinnprozess homogen mit einem weiteren Bestandteil oder mit weiteren Bestandteilen der Spinnmasse vermischt oder in diese eingebracht wird. Anschließend wird die derart hergestellte Spinnmasse durch eine Anzahl von Lochdüsen gepresst. Die Erfindung betrifft weiterhin ein Verfahren zur Herstellung eines Vlieses. Die Erfindung betrifft außerdem ein Vlies, dessen Garn aus einer Spinnmasse gebildet ist, welche ein Silikat-Aerogel umfasst. The invention relates to a method for producing a yarn from a dope. According to the invention, the spinning mass comprises a particulate silicate airgel, which before or during a spinning process is homogeneously mixed with or introduced into a further constituent or with further constituents of the spinning mass. Subsequently, the thus prepared dope is pressed through a number of hole nozzles. The invention further relates to a process for producing a nonwoven. The invention also relates to a nonwoven whose yarn is formed from a dope comprising a silicate airgel.

Intelligence with microcirculation physical therapy function supports mesh eyeshade

具有微循环理疗功能的智能养目眼罩，包括由抗菌远红外促进微循环功能面料制成的眼罩和弹力带。内层对应眼部穴位的位置设有若干个按摩突起；外层设有智能检测控制芯片。抗菌远红外促进微循环功能面料吸湿排汗，蓄热保暖，具有远红外和负离子放射功能，长期佩戴能够改善皮肤状态，提高身体微循环，有益眼部健康。智能检测控制芯片通过中央处理模块和信息传输模块与智能手机进行信息交换；通过传感器模块和警示模块对佩戴者身体的体征信息进行监控，并将采集的体征信息进行分析，根据分析的结果与用户个人身体情况比较。通过震动按摩模块、红外线理疗模块和负离子理疗模块对佩戴者眼部进行适当的理疗恢复，有助于佩戴者眼部健康。

Process for manufacturing viscose

A process for the production of artificial threads, films and the like from viscose

The precipitation bath employed in the manufacture of filaments, films, &c. from viscose consists of an aqueous extract of the bark and small twigs of conifers, to which has been added a mineral acid or an acid salt. To obtain the extract, small twigs or the bark portions of conifers are boiled with water, with or without pressure, and the turbid liquid is then drawn off, and evaporated if necessary to 3-5 DEG B<\>ae; the requisite quantity of sulphuric acid of 60 DEG B<\>ae is afterwards added. Specification 145,627 is referred to.

Process for the production of rayon fibers.

Water absorbent cellulose fibres - contg. alkali metal or ammonium salt of acrylic methacrylic acid copolymer

Improvements in the manufacture of artificial filaments

Method and apparatus for manufacturing viscose

Patent FR961353A

Manufacturing process of viscose for artificial silk

Process for lowering the alkalinity of alkaline xanthatic solutions of film-forming polysaccharides

A kind of bamboo charcoal fiber non-woven material and preparation method thereof

本发明提供了一种竹炭纤维非织造材料的制备方法，包括：将竹炭粉与粘胶纤维纺丝原液混合，与纺丝浴反应得到初生丝条；所述初生丝条依次经过牵伸、切断、后处理、烘干处理后得到粘胶基竹炭纤维；将所述粘胶基竹炭纤维依次通过开松、多仓混合、梳理成网、水刺加固和烘干处理后，得到竹炭纤维非织造材料。本发明还提供了一种上述制备方法制备得到的竹炭纤维非织造材料。本发明提供的方法可使竹炭在非织造材料中均匀且稳固地存在，有效的避免了竹炭粉残留于皮肤上的风险。同时，结合水刺工艺流程生产竹炭纤维非织造材料，使其具有良好的吸附性能和力学性能，且具有释放负离子，抗菌抑菌，发射远红外线等多项功能，可用作面膜材料和其他卫生材料。

Manufacturing process of artificial silk from viscose

Viscose spinning method and device

Process for manufacturing corrugated cellulosic wool from

Patent FR2320998B1

Process for the production of cellulosic compounds

Process for the production of homogeneous cellulose xanthates

High degree of polymerization artificial fiber manufacturing process

Improvements in the treatment of cellulose filaments, threads or films

Process for the preparation of viscose

Process for manufacturing artificial yarns and other similar products from viscose

Improvements to containers for delivering measured volumes of liquid

Method for reusing blended textile comprising cellulose and synthetic plastic and regenerated cellulosic molded body

一種用於再循環混合紡織品(110)之方法，其中該方法具有以下步驟：i)將該混合紡織品(110)送入(52)，其中該混合紡織品(110)具有纖維素型纖維和合成纖維，其中這些合成纖維具有至少一種合成塑膠，ii)從該纖維素至少部分消耗(54)該合成塑膠，以及iii)在該消耗之後進一步加工(58)經消耗的混合紡織品(60)。

Process for the manufacture of artificial textile fibers having characteristics similar to those of rayon

Process for the production of viscose filaments and films

Improvements in the manufacture of viscose solutions

Improvements in shock absorbers for vehicle springs

Process for manufacturing cellulose xanthogenate solutions

Process for preparing viscose

Process for spinning viscose

Manufacturing process of viscose for the production of artificial materials

Process for preparing viscose solutions that are easy to filter using vacuum

Patent FR2330784B1

Viscose manufacturing process

Spinning bath for viscose solutions

Process for preparing viscose

Process for the manufacture of viscose yarns and staple fibers, and the yarns and staple fibers obtained by this process

Improvement in the manufacture of artificial viscose silk

Direct manufacturing process for colored cellulosic products

Spinning bath for viscose