Regenerated Cellulose, Viscose Or Rayon Patents (Class 162/157.7)
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Patent number: 11639579Abstract: A recycled cellulose pulp composition is provided which comprises recycled cellulosic fibers and cellulose ester staple fibers. A wet-laid fibrous product is also provided which comprises recycled cellulosic fibers and cellulose ester staple fibers. A bailed article is also provided that comprises recycled cellulosic fibers and cellulose ester staple fibers. In embodiments, the recycled cellulosic fibers are present in an amount of 50 wt % or more, based on the total dry weight of fibers, and the cellulose ester staple fibers are present in an amount sufficient to increase the Canadian standard freeness (CSF) of the composition by 5% or more compared to a 100 wt % cellulosic fiber pulp composition processed under similar conditions.Type: GrantFiled: July 26, 2019Date of Patent: May 2, 2023Assignee: Eastman Chemical CompanyInventors: Kenny Randolph Parker, Charles Stuart Everett, Melvin Glenn Mitchell
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Patent number: 11441267Abstract: The present invention provides compositions comprising cellulose fibers and cellulose ester fibers and wet laid articles made from the compositions, as well as wet laid processes to produce these compositions. More specifically, the present invention provided compositions comprising cellulose fibers and cellulose acetate fibers and wet laid articles made from these compositions as well as wet laid processes to produce these compositions. The present invention also relates to developing a composition, process, wet laid product, or articles exhibiting any one of many desired benefits.Type: GrantFiled: July 26, 2019Date of Patent: September 13, 2022Assignee: Eastman Chemical CompanyInventors: Melvin Glenn Mitchell, Charles Stuart Everett, Kenny Randolph Parker, Koushik Ghosh, Mounir Izallalen
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Patent number: 11242651Abstract: Methods of re-dispersing and de-agglomerating dewatered, partially dried and dried compositions of microfibrillated cellulose and compositions of microfibrillated cellulose and inorganic particulate material, into liquid compositions comprising same, by applying ultrasonic energy to such liquid compositions of dewatered, partially dried and dried compositions of microfibrillated cellulose, or compositions of microfibrillated cellulose and inorganic particulate material. Methods for preparing an aqueous suspension comprising microfibrillated cellulose and, optionally, inorganic particulate material, with enhanced viscosity and tensile strength properties, suitable for use in methods of making paper or coating paper, and to filled and coated papers made from such aqueous suspensions.Type: GrantFiled: April 20, 2018Date of Patent: February 8, 2022Assignee: FiberLean Technologies LimitedInventors: Mark Windebank, David Skuse, Tafadzwa Motsi, Guillaume Tellier
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Patent number: 11193005Abstract: Disclosed herein are cellulose/polysaccharide composites comprising a) cellulose; and b) an enzymatically-produced polysaccharide, certain derivatives of an enzymatically-produced polysaccharide, or a mixture thereof; wherein the enzymatically-produced polysaccharide and the polysaccharide derivative are water-insoluble. The cellulose is plant-derived. The composites are useful in forming articles such as paper, packaging material, or insulating material.Type: GrantFiled: November 14, 2017Date of Patent: December 7, 2021Assignee: NUTRITION & BIOSCIENCES USA 4, INC.Inventor: Natnael Behabtu
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Patent number: 9750837Abstract: The present invention relates to a haemostatic patch comprising a porous layer based on oxidized cellulose and a neutralized film based on chitosan, said film comprising a free face and a face fixed on one of the faces of the porous layer, and to the method of preparing said patch comprising the following steps: —a°) preparing a porous layer based on oxidized cellulose, —b°) preparing a film based on chitosan starting from an acidic aqueous solution of chitosan, —c°) fixing the film obtained in b°) on one face of the porous layer, —d°) neutralizing the film obtained in b°), —where step c°) can be carried out before or after step d°), characterized in that: the neutralizing step d°) comprises treatment of said film with a neutralizing composition comprising at least ethanol and ammonium hydroxide (NH4OH).Type: GrantFiled: September 25, 2013Date of Patent: September 5, 2017Assignee: Sofradim ProductionInventors: Aurelie Serrero, Suzelei Montanari
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Patent number: 9005395Abstract: The present disclosure is generally directed to a dispersible moist wipe comprising hydroentangled fibers and a binder composition. The moist wipe demonstrates high initial wet strength while maintaining effective dispersion in an aqueous environment. The moist wipe has potential application as a flushable surface cleaning product and/or a flushable cleansing cloth.Type: GrantFiled: January 31, 2014Date of Patent: April 14, 2015Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Kenneth John Zwick, Nathan John Vogel, WanDuk Lee, Joseph Kenneth Baker, Colin Ackroyd
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Patent number: 8980011Abstract: A method of cleaning residue from a surface includes providing a disposable cellulosic wiper including a percentage by weight of pulp-derived papermaking fibers. The pulp-derived papermaking fibers have a characteristic scattering coefficient of less than 50 m2/kg. The wiper also includes a percentage by weight of fibrillated regenerated independent cellulosic microfibers having a number average diameter of less than about 2 microns, and a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml. The microfibers are selected and present in amounts such that the wiper exhibits a scattering coefficient of greater than 50 m2/kg. The wiper is applied, with a predetermined amount of pressure, to a residue-bearing surface, and the surface is wiped, while applying the predetermined amount of pressure, to remove residue from the surface, such that the surface has less than 1 g/m2 of residue after being wiped under the predetermined amount of pressure.Type: GrantFiled: January 30, 2014Date of Patent: March 17, 2015Assignee: Georgia-Pacific Consumer Products LPInventors: Daniel W. Sumnicht, Joseph H. Miller
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Patent number: 8980055Abstract: A disposable cellulosic wiper includes (a) a percentage by weight of pulp-derived papermaking fibers, and (b) a percentage by weight of fibrillated regenerated independent cellulosic microfibers having a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml and having a weight average diameter of less than 2 microns. The microfibers are further characterized in that 40% by weight thereof is finer than 14 mesh.Type: GrantFiled: January 30, 2014Date of Patent: March 17, 2015Assignee: Georgia-Pacific Consumer Products LPInventors: Daniel W. Sumnicht, Joseph H. Miller
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Publication number: 20140308870Abstract: The invention relates to a regenerated cellulose fiber in the form of a solid viscose flat fiber having 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. The fiber according to the invention is particularly suitable for the production of paper.Type: ApplicationFiled: November 12, 2012Publication date: October 16, 2014Applicant: KELHEIM FIBRES GMBHInventors: Haio Harms, Ingo Bernt, Walter Roggenstein
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Patent number: 8778086Abstract: A method of cleaning residue from a surface using a disposable cellulosic wiper that includes from about 25% or more by weight of pulp-derived papermaking fibers. The pulp-derived papermaking fibers have a characteristic scattering coefficient of less than 50 m2/kg. The wiper also has from about 25% to about 75% by weight of fibrillated regenerated independent cellulosic microfibers. The fibers are finer than 14 mesh, have a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml, have a number average diameter of less than about 2 microns, and are present in amounts such that the wiper exhibits a scattering coefficient of greater than 50 m2/kg. The wiper is applied, with a predetermined amount of pressure, to a residue-bearing surface. The surface is wiped with the applied wiper to remove residue from the surface, such that the surface has less than 1 g/m2 of residue after being wiped.Type: GrantFiled: March 27, 2012Date of Patent: July 15, 2014Assignee: Georgia-Pacific Consumer Products LPInventors: Daniel W. Sumnicht, Joseph H. Miller
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Patent number: 8673116Abstract: To provide a water disintegratable fibrous sheet with high water disintegratability and wet strength, that can be used as a cleaning sheet. A prescribed water disintegratable fibrous sheet comprising 30-50% by mass of unbeaten pulp (a) with a beating degree of 700 cc or greater; 20-40% by mass of beaten pulp (b) with a beating degree of 400-700 cc; 15-45% by mass of regenerated cellulose (c) with a beating degree of 700 cc or greater; and 2-15% by mass of fibrillated purified cellulose (d) with a beating degree of 0-400 cc.Type: GrantFiled: June 8, 2010Date of Patent: March 18, 2014Assignee: Unicharm CorporationInventors: Takayoshi Konishi, Kazuya Okada, Jyoji Shimizu
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Patent number: 8663426Abstract: The present invention relates to a method of producing a cellulose-fiber flat structure, the method including obtaining a cellulose-fiber flat structure by filtering a fine cellulose-fiber dispersion containing fine cellulose fibers having an average fiber diameter of 4 to 100 nm, using a filter material having a water permeability of not more than 100 ml/m2·s and an initial tensile modulus of 20 MPa or greater. The present invention is able to produce a cellulose-fiber flat structure by efficiently recovering fine cellulose fibers from a dispersion containing fine cellulose fibers having an average fiber diameter at the nano level. The method of producing a cellulose-fiber flat structure can also be applied to a continuous process.Type: GrantFiled: February 1, 2011Date of Patent: March 4, 2014Assignees: Mitsubishi Chemical Corporation, Oji Paper Co., Ltd.Inventors: Tsuyoshi Fujiwara, Naohide Ogita, Takashi Kawamukai
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Publication number: 20140053995Abstract: The present invention is directed towards a method for spinning anionically modified cellulose comprising the steps of: (a) preparing a suspension of the anionically modified cellulose in a continuous phase; (b) subjecting the suspension to high shear rate; (c) performing spinning by extruding the cellulose suspension through a spinneret into a spinbath comprising a cationic complexing agent, and (d) isolating the sun fibres from the spin bath; as well as fibres obtained based on the method of the invention and paper or board products derived from such fibres.Type: ApplicationFiled: March 8, 2012Publication date: February 27, 2014Applicant: Sappi Netherlands Services B.V.Inventor: Ian Graveson
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Patent number: 8535480Abstract: A method for pulp processing includes a cold caustic extraction stage in which the spent cold caustic solution and the spent liquid used to wash the extracted pulp are concentrated by an evaporation system. The concentrated liquid can be used as part of the neutralization and cooking liquor in the pulp process, leading to increased efficiency without significant reduction in pulp quality. Highly concentrated filtrate from the cold caustic extraction stage may help reduce hemicellulose deposition on wood fiber during the cooking step.Type: GrantFiled: May 27, 2010Date of Patent: September 17, 2013Assignee: Bahia Specialty Cellulose SAInventor: Marcelo Moreira Leite
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Patent number: 8500956Abstract: The invention relates to a process for producing a dissolving pulp from a cellulosic starting material using the kraft process, comprising the step of cooking the starting material with a cooking liquor. The process according to the invention characterized in that the starting material is exposed to a steam treatment prior to cooking and that the pulp obtained by cooking is subjected to cold caustic extraction (CCE) in the course of further processing.Type: GrantFiled: May 9, 2007Date of Patent: August 6, 2013Assignee: Lenzing AktiengesellschaftInventors: Herbert Sixta, Andrea Promberger, Andrea Borgards, Roland Möslinger
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Patent number: 8496748Abstract: The invention relates to a polymer composition formed from a biologically degradable polymer and a material from sea plants and/or shells of sea animals or at least two components selected from the group consisting of saccharides and the derivatives thereof, proteins, amino acids, vitamins and metal ions. The invention additionally relates to a molded article formed from the polymer composition. The molded article may be packaging material or fibrous material, in the form of fibrous material as a mixing component for the production of yarns, and in the form of fibrous material for the production of nonwoven fabrics or woven fabrics.Type: GrantFiled: March 16, 2011Date of Patent: July 30, 2013Assignee: Smartfiber AGInventors: Stefan Zikeli, Thomas Endl, Michael Gert Martl
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Patent number: 8361278Abstract: A base sheet for food wrap products. The base sheet can include a pulp-derived papermaking fiber and a fibrillated regenerated cellulose microfiber having a CSF value of less than about 175 mL.Type: GrantFiled: September 16, 2009Date of Patent: January 29, 2013Assignee: Dixie Consumer Products LLCInventors: Gregory M. Fike, Joseph R. Pounder, Daniel W. Sumnicht
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Patent number: 8318318Abstract: A web comprising a layer of crosslinked cellulosic fiber overlaid on and integral with at least one layer of regenerated cellulose fiber. The crosslinked cellulosic fiber can be sandwiched between two regenerated cellulose fiber layers. The regenerated cellulose can be viscose or lyocell.Type: GrantFiled: December 31, 2008Date of Patent: November 27, 2012Assignee: Weyerhaeuser NR CompanyInventors: Mengkui Luo, David George Unrau
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Patent number: 8268129Abstract: The invention relates to a wet-fast nonwoven, preferably a fiber paper, which comprises fibers from a cellulose-containing material and fibers from a thermoplastic material welded firmly together at their points of intersection. The fibers from the cellulose-containing material are preferably hemp fibers while the fibers from the thermoplastic material are preferably fibers from polypropylene, polyester or polyamide. The fibers are interlinked under the action of pressure and/or heat, especially using a pair of heated calender rolls. The nonwoven or the fiber paper is especially used to reinforce food casings based on regenerated cellulose, especially in artificial cellulose hydrate-based sausage skins.Type: GrantFiled: October 15, 2005Date of Patent: September 18, 2012Assignee: Kalle GmbHInventors: Klaus-Dieter Hammer, Herbert Gord, Walter Lutz
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Patent number: 8187421Abstract: An absorbent paper sheet includes cellulosic papermaking fiber and up to about 75 percent by weight fibrillated regenerated cellulose microfiber which may be regenerated from a cellulosic dope utilizing a tertiary amine N-oxide solvent or selected ionic liquids.Type: GrantFiled: September 17, 2008Date of Patent: May 29, 2012Assignee: Georgia-Pacific Consumer Products LPInventors: Daniel W. Sumnicht, Joseph H. Miller
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Patent number: 8187422Abstract: A high efficiency disposable cellulosic wiper includes (a) pulp-derived papermaking fiber; (b) up to 75% by weight regenerated cellulosic microfiber having a characteristic CSF value of less than 175 ml, the microfiber being selected and present in amounts such that the wiper exhibits a Laplace pore volume fraction at pore sizes less than 15 microns of at least 1.5 times that of a like wiper prepared without regenerated cellulose microfiber. The wipers of the invention exhibit remarkable residue removal efficiency.Type: GrantFiled: September 17, 2008Date of Patent: May 29, 2012Assignee: Georgia-Pacific Consumer Products LPInventors: Daniel W. Sumnicht, Joseph H. Miller
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Patent number: 8177938Abstract: A method of making regenerated cellulose microfibers includes forming segmented fibers with multiple longitudinally-extending segments of slightly different composition such that there is defined splittable interfaces between juxtaposed segments of the fibers which are then split into microfibers at yields of greater than 50%. Fibers so produced may be incorporated into absorbent sheet with other papermaking fibers to provide strength, softness, bulk and absorbency to tissue, towel, and personal care products.Type: GrantFiled: January 9, 2008Date of Patent: May 15, 2012Assignee: Georgia-Pacific Consumer Products LPInventor: Daniel W. Sumnicht
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Patent number: 7998313Abstract: Inflated fibers of regenerated cellulose and other regenerated structures are formed from ionic liquid/cellulose dope. Fibers so produced may be incorporated into absorbent sheet with other papermaking fibers to provide softness, bulk and absorbency.Type: GrantFiled: November 8, 2007Date of Patent: August 16, 2011Assignee: Georgia-Pacific Consumer Products LPInventor: Bruce J. Kokko
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Patent number: 7951264Abstract: A method of making absorbent cellulosic sheet includes forming a web of papermaking fibers, extruding a cellulosic dope of underivatized cellulose, disposing the dope upon the web and regenerating the cellulose in-situ. Regenerated filaments may have a denier of from about 0.05 to about 20.Type: GrantFiled: January 9, 2008Date of Patent: May 31, 2011Assignee: Georgia-Pacific Consumer Products LPInventor: Daniel W. Sumnicht
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Patent number: 7850822Abstract: 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. The alkali sulfate stream is recycled to the viscose process. Oxidation is performed under elevated temperature and pressure conditions such that the offgas has an oxygen concentration of between about 2% to 18% and the alkali sulfate stream has a pH of about 2 to 10.Type: GrantFiled: October 29, 2004Date of Patent: December 14, 2010Assignee: Siemens Water Technologies Holding Corp.Inventors: Chad L. Felch, Richard W. Lehmann, Todd J. Wingers, Bruce L. Brandenburg, William M. Copa
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Publication number: 20080173419Abstract: A method of making regenerated cellulose microfibers includes forming segmented fibers with multiple longitudinally-extending segments of slightly different composition such that there is defined splittable interfaces between juxtaposed segments of the fibers which are then split into microfibers at yields of greater than 50%. Fibers so produced may be incorporated into absorbent sheet with other papermaking fibers to provide strength, softness, bulk and absorbency to tissue, towel, and personal care products.Type: ApplicationFiled: January 9, 2008Publication date: July 24, 2008Applicant: Georgia-Pacific Consumer Products LPInventor: Daniel W. Sumnicht
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Patent number: 7364639Abstract: 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 also includes curly fibers derived from the method of the invention.Type: GrantFiled: August 29, 2005Date of Patent: April 29, 2008Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Sheng-Hsin Hu, Young Chan Ko
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Patent number: 7037405Abstract: 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 cellulose may be used as a starting material for production of paper or paper board.Type: GrantFiled: May 14, 2003Date of Patent: May 2, 2006Assignee: International Paper CompanyInventors: Xuan Truong Nguyen, Zheng Tan
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Patent number: 6808598Abstract: 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.Type: GrantFiled: September 29, 2000Date of Patent: October 26, 2004Assignee: Uni-Charm CorporationInventors: Naohito Takeuchi, Takayoshi Konishi
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Patent number: 6706876Abstract: 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 polymerization can be modified by acid hydrolysis, steam explosion; or alkaline enzymate degradation.Type: GrantFiled: September 18, 2001Date of Patent: March 16, 2004Assignee: Weyerhaeuser CompanyInventors: Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi
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Patent number: 6635754Abstract: 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 cellulose particles with certain water-soluble polymers that are well suited for use in the papermaking industry.Type: GrantFiled: December 30, 1999Date of Patent: October 21, 2003Assignee: TFM Handels-AktiengesellschaftInventors: Jörg Oberkofler, Thomas Moser, Anton Schmalhofer, Jeffrey F. Spedding
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Publication number: 20030178166Abstract: Conventional water-decomposable fibrous sheets for cleaning sheets capable of being disposed of in toilets and others do not have well-balanced decomposability in water and strength. The water-decomposable fibrous sheet containing from 5 to 100% by mass of fibrillated rayon having a fiber length of at most 10 mm and having a degree of beating of at most 700 cc, optionally along with other fibers having a length of at most 10 mm, has good decomposability in water and high wet strength. When subjected to water-jetting treatment, it becomes more bulky to have a soft feel.Type: ApplicationFiled: October 7, 2002Publication date: September 25, 2003Applicant: Uni-Charm CorporationInventors: Naohito Takeuchi, Jyoji Shimizu, Kazuya Okada, Toshiyuki Tanio, Takayoshi Konishi
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Patent number: 6544912Abstract: 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 type of fibrillated rayon having a degree of beating of at most 700 cc, of which the length of the primary fibers falls between 1.8 mm and 4.0 mm at the peak of its self-weighted, average fiber length distribution profile curve, and a second type of fibrillated rayon having a degree of beating of at most 700 cc, of which the length of the primary fibers falls between 4.5 mm and 10.0 mm at the peak of its self-weighted, average fiber length distribution profile curve. The microfibers extending from the first and second, types of fibrillated rayon are entangled with and/or hydrogen-bonded to at least either of other microfibers and other fibers.Type: GrantFiled: July 27, 2000Date of Patent: April 8, 2003Assignee: Uni-Charm CorporationInventors: Toshiyuki Tanio, Jyoji Shimizu, Kazuya Okada, Naohito Takeuchi
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Publication number: 20030056916Abstract: A web comprised of lyocell fibers. The web may be a homogeneous blend of fibers with lyocell fibers having a length of less than about 6 mm as a portion of the blend.. The web may be a multi layered single ply with lyocell fibers in one or more layers. The web may be composed of multiple plies, with component plies composed of multiple layers. The length and proportion of the lyocell fibers in the respective layers of the component plies may vary intentionally from layer to layer.Type: ApplicationFiled: September 23, 2002Publication date: March 27, 2003Applicant: The Procter & Gamble CompanyInventors: Steven Anthony Horenziak, Ward William Ostendorf
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Patent number: 6503371Abstract: 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 them to form the fibrids.Type: GrantFiled: August 4, 2000Date of Patent: January 7, 2003Assignee: Acordis Kelheim GmbHInventors: Richard Kinseher, Andrzej Marek Mackiewicz
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Patent number: 6309509Abstract: 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 of APG and polyether glycol in paper composed of cellulose ester fibers and cellulose fibers and to calendaring of such paper is also disclosed.Type: GrantFiled: October 11, 1996Date of Patent: October 30, 2001Assignee: Eastman Chemical CompanyInventors: Charles Michael Buchanan, Eric Eugene Ellery, Matthew Davie Wood
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Patent number: 6268028Abstract: 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 of APG and polyether glycol in paper composed of cellulose ester fibers and cellulose fibers and to calendaring of such paper is also disclosed.Type: GrantFiled: November 30, 1998Date of Patent: July 31, 2001Assignee: Eastman Chemical CompanyInventors: Charles Michael Buchanan, Eric Eugene Ellery, Matthew Davie Wood
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Patent number: 6258210Abstract: 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 fibrillated rayon of at least 3% by mass of all fibers constituting the top layer. 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 the primary fibers. The microfibers are entangled with and/or hydrogen-bonded to at least either of other microfibers and other fibers. The back layer includes fibers containing no fibrillated rayon, the fibers entangled with and/or hydrogen-bonded to each other, or the back layer includes the fibrillated rayon in an amount smaller than that in the top layer. The microfibers of the fibrillated rayon are entangled with and/or hydrogen-bonded to at least either of other microfibers and other fibers.Type: GrantFiled: July 27, 2000Date of Patent: July 10, 2001Assignee: Uni-Charm CorporationInventors: Naohito Takeuchi, Kazuya Okada
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Shaped, plastic articles comprising a cellulose fiber, a cellulose ester, and a non-ionic surfactant
Patent number: 6193841Abstract: 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 of APG and polyether glycol in paper composed of cellulose ester fibers and cellulose fibers and to calendaring of such paper is also disclosed.Type: GrantFiled: November 30, 1998Date of Patent: February 27, 2001Assignee: Eastman Chemical CompanyInventors: Charles Michael Buchanan, Eric Eugene Ellery, Matthew Davie Wood