Class 162/157.7 - Regenerated cellulose, viscose or rayon

Subclass of Class 162 - Paper making and fiber liberation
Definition: Processes and products in which the cellulosic fibers include
No. of patents: 33
Last issue date: 12/14/2010

Number	Title	Issue Date
7850822	System and method of wet oxidation of a viscose process stream A wet oxidation process is used to control the concentration of reduced sulfur compounds from a viscose process. The wet oxidation process oxidizes the reduced sulfur compounds to convert such reduced sulfur compounds to an alkali sulfate and/or thiosulfate species....	12/14/2010
7364639	Method of producing twisted, curly fibers A method of forming twisted, curly fibers from a wet wood pulp without the aid of a wet fluffing process or a chemical cross-linker. The method includes forming the wet wood pulp into fiber bundles and subsequently thermally drying the fiber bundles. The invention a...	04/29/2008
7214291	Method for the modification of cellulose fibres The invention relates to a method for the modification of cellulose fiber with the object of increasing the strength properties of the pulp. Cellulose derivative, preferably in the form of CMC, is added in association with alkali cooking and/or delignification of ce...	05/08/2007
7210205	Water-decomposable fibrous sheet of high resistance to surface friction, and method for producing it Provided is a water-decomposable fibrous sheet including fibers containing at least 3% by mass of fibrillated rayon. The fibrillated rayon has a degree of beating of at most 700 cc and has primary fibers of a predetermined fiber length and microfibers extending from...	05/01/2007
7037405	Surface treatment with texturized microcrystalline cellulose microfibrils for improved paper and paper board The present invention relates to the production of texturized microcrystalline cellulose from raw pulp material. This texturized microcrystalline cellulose can then be used for surface treatment of paper or paper board. Additionally, the texturized microcrystalline ...	05/02/2006
6951598	Hydrophobically modified cationic acrylate copolymer/polysiloxane blends and use in tissue The present invention is a soft tissue sheet. The tissue sheet comprises papermaking fibers and a polysiloxane composition. The polysiloxane composition comprises a polysiloxane and a compatible synthetic resin binder having a glass transition temperature of about 1...	10/04/2005
6808598	Water-decomposable fibrous sheet containing gel compound Herein provided is a water-decomposable fibrous sheet includes water-dispersible fibers having a fiber length of at most 20 mm, and a gel compound. ...	10/26/2004
6706876	Cellulosic pulp having low degree of polymerization values The present invention is directed to a pulp useful for making lyocell fibers. The pulp has a degree of polymerization from about 300 to about 1000; an alpha cellulose content of less than about 90% and in one instance can be made in a roll form. The degree of polyme...	03/16/2004
6635754	Cellulose particles, method for producing them and their use Cellulose particles are described that have cationic groups in their interior. In one aspect, at least 10%, and preferably 50% or more, of the cationic groups are present within the particle interior. Also disclosed are particular combinations of such cel...	10/21/2003
6544912	Water-decomposable fibrous sheet containing fibrillated rayon of different fiber length profiles Provided is a water-decomposable fibrous sheet includes fibers containing fibrillated rayon. The fibrillated rayon has primary fibers of a predetermined fiber length and microfibers extending from the primary fibers. The fibrillated rayon includes a first...	04/08/2003
6503371	Manufacture of cellulosic particles Cellulosic fibrids can be made by mixing together under turbulent conditions viscose and a coagulating and regenerating liquor so as to form a suspension of soft macroscopic cellulosic particles in a spent liquor, collecting the particles, and comminuting...	01/07/2003
6309509	Composition and paper comprising cellulose ester, alkylpolyglycosides, and cellulose This invention relates to compositions, paper, thermoplastic sheets, and medical paper containing cellulose ester, alkylpolyglycoside (APG) or a mixture of APG and polyether glycol, and, optionally, cellulose. The process of incorporating APG or a mixture...	10/30/2001
6287419	Water-decomposable non-woven fabric of regenerated cellulose fibers of different lengths There is disclosed a water-decomposable non-woven fabric including a first regenerated cellulose fiber having a fiber length of 3 mm or more to 5 mm or less, a second regenerated cellulose fiber having a fiber length of 6 mm or more to 10 mm or less, and ...	09/11/2001
6268028	Composition and paper comprising cellulose ester, alkylpolyglycosides, and cellulose This invention relates to compositions, paper, thermoplastic sheets, and medical paper containing cellulose ester, alkylpolyglycoside (APG) or a mixture of APG and polyether glycol, and, optionally, cellulose. The process of incorporating APG or a mixture...	07/31/2001
6258210	Multi-layered water-decomposable fibrous sheet Provided is a multi-layered water-decomposable fibrous sheet with a plurality of layers each having a different fibrous constitution being integrated, including a top layer on a top surface and a back layer on a back surface. The top layer includes fibril...	07/10/2001
6193841	Shaped, plastic articles comprising a cellulose fiber, a cellulose ester, and a non-ionic surfactant This invention relates to compositions, paper, thermoplastic sheets, and medical paper containing cellulose ester, alkylpolyglycoside (APG) or a mixture of APG and polyether glycol, and, optionally, cellulose. The process of incorporating APG or a mixture...	02/27/2001
6080277	Cellulose particles, method for producing them and their use Cellulose particles are provided which have cationic groups even in the interior....	06/27/2000
5580356	Fibre treatment method The fibrillation tendency of solvent-spun cellulose fibre is reduced by treating the fibre with a cross-linking agent and a flexible linear polymer with terminal functional groups, for example polyethylene glycol (PEG) of molecular weight 300 to 600. The ...	12/03/1996
5573827	Fine dot-like tone decorative laminates containing pigmented fibers Disclosed is a decorative laminates having a decorative paper and having a fine dot-like tone appearance. The decorative paper contains pigment(s) having a mean particle size of from 20 to 100 μm and/or powdery colored fibers having a mean fiber length o...	11/12/1996
5437908	Bathroom tissue and process for producing the same A bathroom tissue comprising an intermediate layer having on one side thereof a top layer, and on the other side thereof a bottom layer. The intermediate layer is comprised of about 100% wood pulp and the top and bottom layers are comprised of wood and ra...	08/01/1995
5387319	Process for manufacturing a flat, fibrous, supple substrate, difficult to tear and substrate obtained This invention relates to a process for manufacturing a flat, fibrous, supple substrate, difficult to tear, said process consisting in: preparing by fibrillation natural cellulosic fibers until their drainability is greater than 60° Schopper-Riegler, mixing i...	02/07/1995
5308663	Biodegradable nonwoven fabric and its molding vessel A biodegradable nonwoven fabric and molded vessel suitable to throwaway use such as in domestic, wrapping, agricultural, gardening, and civil engineering field. A web of cellulose-based fibers are combined with chitosan salt and an interfiber binder compr...	05/03/1994
5022964	Nonwoven fibrous web for tobacco filter A nonwoven fibrous web material that contains cellulose ester fibers, cellulose ester fibrets and a minor amount of activated fusible fibers uniformly dispersed throughout is particularly well suited as a filter media. The activated fusible fibers are eff...	06/11/1991
4925528	Manufacture of wetlaid nonwoven webs A method for forming a fabric web by wet-laying fibers on paper-making equipment, the web comprising staple length natural or synthetic fibers and optionally wood cellulose papermaking fibers and an adsorbed polymeric surface active agent. The method comp...	05/15/1990
4869793	Method of preparing an asbestos diaphragm An electrolyte permeable diaphragm consisting essentially of asbestos is prepared by depositing asbestos and a porosity control agent selected from the group of cellulosic-type materials, e.g., starch, cellulose or rayon, infusible thermoset polymer mater...	09/26/1989
4418101	Method of making thermoplastic hardboard from acetylated mat A wet-felted mat of wood fibers is acetylated by coating the mat with a quantity of acetic anhydride ranging from 5 to 70% by volume of the mat and heating the mat at a temperature of from 150° to 300° F. while confining substantially all of the acetic ...	11/29/1983
4388378	Thermoplastic hardboard from acetylated mat A wet-felted mat of wood fibers is acetylated by coating the mat with a quantity of acetic anhydride ranging from 5 to 70% by volume of the mat and heating the mat at a temperature of from 150° to 300° F. while confining substantially all of the acetic ...	06/14/1983
4246066	Method for producing fibrous sheet A fibrous sheet having a high strength and water resistance and having no resin specks on the surface can be produced by producing a sheet from a fiber slury by the known paper making process, to said fiber slurry being added a flocculate of chlorinated p...	01/20/1981
4042453	Tufted nonwoven fibrous web A tufted nonwoven web material exhibiting high loft, bulk and absorbency is made by a papermaking technique using an apertured, plate-like, fiber collecting element having a structure appropriate to preventing entanglement between adjacent tufts prior to ...	08/16/1977
4018647	Process for the impregnation of a wet fiber web with a heat sensitized foamed latex binder A fiber web made by the wet method on a paper making machine is impregnated with a heat sensitized, foamed latex binder as the web passes through a screening area of the paper making machine....	04/19/1977
4007083	Method for forming wet-laid non-woven webs A method of producing textile-like non-woven essentially binderless webs from fiber furnishes at least about 70% of which comprise man made non-fibrillatable low denier fibers having no large area flat surfaces and which are at least about 1/4 inch in len...	02/08/1977
3960652	Process of forming wet laid tufted nonwoven fibrous web and tufted product A tufted nonwoven web material exhibiting high loft, bulk and absorbency is made by a papermaking technique using an apertured, plate-like, fiber-collecting element having a structure appropriate to preventing entanglement between adjacent tufts prior to ...	06/01/1976
3932210	Method of dispersing hydroxymethyl cellulose xanthate fibers Non-woven fabric or paper-like material having excellent properties can be produced from fibers comprising hydroxymethyl cellulose xanthate by treating the fibers with a water soluble acid salt of aminoethylethanolamine monostearylamide....	01/13/1976

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Class 162/157.7 - Regenerated cellulose, viscose or rayon