Fibers Of Different Dimensions Patents (Class 162/149)
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Patent number: 12098507Abstract: The non-wood pulps have a fiber length greater than about 1.70 mm and a porosity of about 100 cfm or greater. The relatively high degree of porosity is achieved without a loss in tensile strengths. The high degree of porosity and strength makes the pulps well suited for the manufacture of wet-laid fibrous products, particularly wet-laid tissue products. The pulps may be prepared from plants of the family Asparagaceae by mechanical pulping and more preferably by a chemi-mechanical pulping using a sodium hydroxide alkaline peroxide solution where the plant biomass is cut to size prior to pulping.Type: GrantFiled: November 5, 2021Date of Patent: September 24, 2024Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Thomas G. Shannon, Zhiying Yu
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Patent number: 11976421Abstract: A method of making an absorbent structure including mixing ultra-high molecular weight (“UHMW”) glyoxalated polyvinylamide adducts (“GPVM”) and/or high molecular weight (“HMW”), glyoxalated polyacrylamide and/or high cationic charge glyoxalated polyacrylamide (“GPAM”) copolymers and high molecular weight (“HMW”) anionic polyacrylamide (“APAM”) with the furnish during stock preparation of a wet laid papermaking process.Type: GrantFiled: June 16, 2022Date of Patent: May 7, 2024Assignee: First Quality Tissue, LLCInventors: James E. Sealey, II, Kevin P. Brennan, Justin S. Pence
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Patent number: 11970819Abstract: The present disclosure relates to tissue products comprising crosslinked fibers. The tissue products generally have good formation, such as a Formation Index greater than about 20, strength, such as geometric mean tensile strengths greater than about 700 g/3? and high bulk, such as sheet bulks greater than about 10 cc/g. Unlike many prior art crosslinked fibers, the crosslinked softwood pulps of the present invention, which are preferably prepared using a glyoxal based crosslinking reagent, are readily dispersible in water and have relatively low degrees of kink and curl. As such, the fibers are well suited for forming wet-laid tissue products and more particularly wet-laid tissue products having improved physical properties, such as improved bulk.Type: GrantFiled: January 20, 2021Date of Patent: April 30, 2024Inventors: Stephen M. Lindsay, Richmond R. Cohen, Kenneth R. Schueler, Jr., Kenneth J. Zwick
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Patent number: 11926128Abstract: The invention relates to a lightweight linerboard for corrugated board with good strength properties and which reduces problems with washboarding in the thereof produced corrugated board. The linerboard of the invention comprises at least one ply comprising 20-80 wt % CTMP from wood fibers and 20-80 wt % chemical pulp, all percentages calculated on the total fiber weight of said first ply, wherein the CTMP exhibits a bulk of at least 2.5 cm3/g.Type: GrantFiled: June 25, 2019Date of Patent: March 12, 2024Assignee: Stora Enso OYJInventors: Seppo Lampainen, Frank Peng, Atso Laakso, Ari-Pekka Määttänen
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Patent number: 11891499Abstract: The present invention relates to a granular microfibrillated cellulose product comprising a microfibrillated cellulose originating from agricultural biomass, said microfibrillated cellulose product comprising ?75 wt % of cellulose, preferably ?70 wt %, based on dry solids content of said product, wherein said granular microfibrillated cellulose product has a bulk density of 500-1200 kg/m3; a flowability of 5-60 ml/s, measured by a Copley scientific powder flowability tester having a stainless steel cylinder with orifice 16 or funnel with orifice 15; and a water content of at most 60 wt %, based on total microfibrillated cellulose product. The present invention further relates to its manufacture and use in and manufacture of paper and paperboard products.Type: GrantFiled: July 19, 2019Date of Patent: February 6, 2024Assignee: KEMIRA OYJInventors: Juhana Ahola, Kaisa Karisalmi, Christos Rampotas, Perttu Heiska, Mika Suvanto
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Patent number: 11883785Abstract: Provided is a reverse osmosis membrane comprising: a support layer comprising a support and a polysulfone layer; and an active layer, wherein a compression modulus is from 20 MPa to 40 MPa, to a method for manufacturing the same, and a water-treatment module.Type: GrantFiled: May 9, 2019Date of Patent: January 30, 2024Assignee: LG Chem, Ltd.Inventors: Ayoung Lee, Yun Seok Choe, Chong Kyu Shin, Phill Lee
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Patent number: 11751728Abstract: A method of making an absorbent structure including mixing ultra-high molecular weight (“UHMW”) glyoxalated polyvinylamide adducts (“GPVM”) and/or high molecular weight (“HMW”), glyoxalated polyacrylamide and/or high cationic charge glyoxalated polyacrylamide (“GPAM”) copolymers and high molecular weight (“HMW”) anionic polyacrylamide (“APAM”) with the furnish during stock preparation of a wet laid papermaking process.Type: GrantFiled: December 17, 2021Date of Patent: September 12, 2023Assignee: First Quality Tissue, LLCInventors: James E. Sealey, II, Kevin Brennan, Byrd Tyler Miller, IV, James E. Bradbury, Justin S. Pence
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Patent number: 11629460Abstract: A fiber blend includes a first amount of wood pulp fibers refined in an amount of at least about 150 kWh per metric ton of gross refining energy, and a second amount of wood pulp fibers refined in an amount of at most about 10 kWh per metric ton of gross refining energy.Type: GrantFiled: February 24, 2021Date of Patent: April 18, 2023Assignee: WestRock MWV, LLCInventors: Humphrey J. Moynihan, Peter W. Hart, Nichole Kilgore, John D. DeJarnette
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Patent number: 10870950Abstract: The present invention provides, inter alia, biocompatible porous structural materials made exclusively or almost exclusively from nanocellulose fibers (CNF), CNC, or bacterial cellulose, as well as processes for making and using provided compositions. Provided compositions may possess specifically tailored mechanical strength properties and have a design-controlled porosity that is homogeneous or graded, depending on the application. Provided compositions may be manufactured by the controlled dewatering of suspensions of CNF. In some embodiments, provided compositions may include a solids concentration of about 10% to about 95% by weight. Controlled water removal and pore homo- or heterogeneity may be accomplished by controlling capillary, hydrostatic and evaporative processes in the environment of a porous mold around the CNF slurry.Type: GrantFiled: March 21, 2017Date of Patent: December 22, 2020Assignee: University of Maine System Board of TrusteesInventors: Michael Darin Mason, David Gregg Holomakoff, Muhammad Radowan Hossen
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Patent number: 10801162Abstract: The present invention is directed to products, such as paper and paperboard products, comprising a substrate containing cellulose and top ply comprising microfibrillated cellulose and inorganic particulate, to methods of making such paper and paperboard products, and associated uses of such paper and paperboard products. The microfibrillated cellulose and inorganic particulate material are applied at the stage when the wet substrate is in the process of being formed on the wire of a papermaking machine, thereby avoiding the additional cost of more extensive equipment and machinery as well as in separate drying of a coating. The microfibrillated cellulose facilitates the application of inorganic particulate onto the surface of a wet paper or paperboard substrate when applied thusly, by trapping the inorganic particulate on the surface of the substrate and by giving the composite sufficient strength and a suitable pore structure to make it suitable for printing and other end-use demands.Type: GrantFiled: December 27, 2018Date of Patent: October 13, 2020Assignee: FiberLean Technologies LimitedInventors: Per Svending, Jonathan Stuart Phipps, Johannes Kritzinger, Tom Larson, Tania Selina, David Skuse
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Patent number: 10030335Abstract: The present invention relates to a filler aggregate composition comprising filler particles of ground calcium carbonate (GCC); a pretreatment agent selected from polyvinylamine (PVAM) and cationic polyacrylamide (CPAM), or a mixture thereof; and a nanofibrillar cellulose (NFC); wherein said filler aggregate composition is in the form of a slurry, wherein said pretreatment agent has an average molecular weight below 6000000 g/mol and a has a charge density below 7 meq/g, determined at pH 7, and the nanofibrillar cellulose is present in an amount of about 0.1-40% of the dry weight of the filler particles. Further it also relates to its method of production, and its use in stocks, paper and paper board.Type: GrantFiled: December 17, 2014Date of Patent: July 24, 2018Assignee: KEMIRA OYJInventors: Matti Hietaniemi, Mikko Virtanen
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Patent number: 9962982Abstract: A graphics medium may have an ink receiving layer with at least fifty percent hydrogel by weight and an opacity control layer with a polymer embedded with at least one filler material.Type: GrantFiled: March 27, 2012Date of Patent: May 8, 2018Assignee: Hewlett-Packard Development Company, L.P.Inventors: Xulong Fu, Christine E. Steichen, Lokendra Pal
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Patent number: 9011641Abstract: Fibrous structures that exhibit a Free Fiber End Count greater than the Free Fiber End Count of known fibrous structures in the range of free fiber end lengths of from about 0.10 mm to about 0.75 mm as determined by the Free Fiber End Test Method, and sanitary tissue products comprising same and methods for making same are provided.Type: GrantFiled: May 30, 2013Date of Patent: April 21, 2015Assignee: The Procter & Gamble CompanyInventors: Khosrow Parviz Mohammadi, John Allen Manifold, James Edmond Haas
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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: 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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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: 8936878Abstract: An insulating (nonconductive) microporous polymeric battery separator comprised of a single layer of enmeshed microfibers and nanofibers is provided. Such a separator accords the ability to attune the porosity and pore size to any desired level through a single nonwoven fabric. Through a proper selection of materials as well as production processes, the resultant battery separator exhibits isotropic strengths, low shrinkage, high wettability levels, and pore sizes related directly to layer thickness. The overall production method is highly efficient and yields a combination of polymeric nanofibers within a polymeric microfiber matrix and/or onto such a substrate through high shear processing that is cost effective as well. The separator, a battery including such a separator, the method of manufacturing such a separator, and the method of utilizing such a separator within a battery device, are all encompassed within this invention.Type: GrantFiled: November 20, 2012Date of Patent: January 20, 2015Assignee: Dreamweaver International, Inc.Inventor: Brian G. Morin
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Patent number: 8926793Abstract: The purpose of the present invention is to provide technology for regenerating pulp having high quality with compact pulp regenerating equipment and less energy. In the pulp regenerating method of the present invention, pulp slurry containing 1.5 wt % or more of a solid component including waste paper pulp is separated into a long fiber fraction and a short fiber fraction by using an outward type slit screen including an opening portion having a slit width in the range of 0.1 mm to 0.3 mm. The solid component ratio of the long fiber fraction and the short fiber fraction is in the range from 10:90 to 60:40, and the difference in Canadian Standard Freeness of the long fiber fraction and the short fiber fraction is in the range of 100 ml to 300 ml.Type: GrantFiled: January 24, 2012Date of Patent: January 6, 2015Assignees: Nippon Paper Industries Co., Ltd., Aikawa Iron Works Co., Ltd.Inventors: Shisei Goto, Takaharu Noda, Hiroki Ohtake, Tatsumi Hosaka
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Publication number: 20140352903Abstract: A cellulosic composition comprising fibres having a length weighted average fibre length (“LWAFL”) of 0.25 to 0.40 mm.Type: ApplicationFiled: October 26, 2011Publication date: December 4, 2014Applicant: ZEO IP PTY LTDInventor: Martin Charles Ernegg
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Patent number: 8894813Abstract: In general, the present disclosure is directed to creped tissue webs, and products produced therefrom. The creped webs and products are strong, soft, and have improved strike-through and absorbency properties. The improvement in both strike-through and absorbency is achieved in-part by increasing the basis weight of the web, while at the same time reducing the creping composition add-on levels.Type: GrantFiled: August 17, 2012Date of Patent: November 25, 2014Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Kenneth John Zwick, Peter Lee Carson, Gary Lee Shanklin, Michael William Smaby, Michael John Rekoske, Thomas Joseph Dyer, Mike Thomas Goulet
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Patent number: 8864945Abstract: A method of making a multi-ply wiper/towel product with cellulosic microfibers. The method includes compactively dewatering a nascent web that includes at least about 10% fibrillated cellulosic microfibers and has an apparently random distribution of fibers. The dewatered web having the apparently random distribution of fibers is applied to a transfer surface. The web is belt-creped from the transfer surface utilizing a generally planar polymeric creping belt provided with a plurality of perforations through the belt. The belt-creping step occurs under pressure in a belt creping nip defined between the transfer surface and the creping belt. The web is dried to form a dried web that includes a plurality of fiber-enriched hollow domed regions protruding from an upper side of the dried web. The hollow domed regions have a sidewall of a relatively high local basis weight formed along at least a leading edge thereof.Type: GrantFiled: July 16, 2013Date of Patent: October 21, 2014Assignee: Georgia-Pacific Consumer Products LPInventors: Joseph H. Miller, Daniel W. Sumnicht, Ayanna M. Bernard, Sanjay Wahal
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Patent number: 8864944Abstract: A method of making a multi-ply wiper/towel product with cellulosic microfibers. The method includes compactively dewatering a nascent web that includes at least about 10% fibrillated cellulosic microfibers and has an apparently random distribution of fibers. The dewatered web having the apparently random distribution of fibers is applied to a transfer surface. The web is belt-creped from the transfer surface utilizing a creping belt. The belt-creping step occurs under pressure in a belt creping nip defined between the transfer surface and the creping belt. The web is dried to form a dried web having a plurality of fiber-enriched hollow domed regions protruding from an upper side of the dried web. The hollow domed regions have a sidewall of a relatively high local basis weight formed along at least a leading edge thereof.Type: GrantFiled: July 16, 2013Date of Patent: October 21, 2014Assignee: Georgia-Pacific Consumer Products LPInventors: Joseph H. Miller, Daniel W. Sumnicht, Ayanna M. Bernard, Sanjay Wahal
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Patent number: 8865277Abstract: In one example, an inkjet media includes a substrate layer with cellulose fibers, synthetic fibers, and a polymeric binder. A barrier layer is disposed on at least one side of the substrate layer, the barrier layer including pigment fillers and at least 30 percent by weight of a polymer resin.Type: GrantFiled: March 29, 2011Date of Patent: October 21, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Xiaoqi Zhou, Xulong Fu, David Edmondson
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Patent number: 8784610Abstract: A method is provided for making paper and paper products from post-industrial packaging materials. The post-industrial packaging materials may include used bulk packaging transportation bags that are made at least partially from sisal and/or jute, such as coffee bean bags or used cocoa bean bags for transporting bulk quantities of coffee beans or cocoa beans, or other materials that have sisal and/or jute constituents. The post-industrial packaging materials may be used to make a mixed fiber stock that includes the post-industrial packaging materials and the post consumer fiber stock and/or other wood-based fiber stock that is a combined with the post-industrial packaging stock prior to the mixed fiber stock being run through a paper machine to make paper and paper products that may be used back in the industry that created the waste.Type: GrantFiled: December 27, 2011Date of Patent: July 22, 2014Assignee: George A. Whiting Paper CompanyInventor: Thomas A. Danz
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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: 8771467Abstract: A carrier-tape base paper making method and the base paper made thereby fall into the technical field of papermaking. According to performance requirements, the base paper is made through pulp conditioning and papermaking, in which different pulping and auxiliary materials for surface, intermediate and bottom layers are added. The method includes such steps as beating, conditioning, papermaking, calendering and reeling. The carrier-tape base paper features high strength, perfect waterproof and bonding performance, limited physical damages to electronic elements and satisfactory resilience.Type: GrantFiled: March 12, 2012Date of Patent: July 8, 2014Assignee: Zhejiang Jiemei Electronic & Technology Co., LtdInventor: Junyun Fang
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Patent number: 8741104Abstract: Fibrous cellulosic products incorporating both conventional cellulosic fibers and laterally expanded cellulose fibers exhibit exceptional porosity, bulk, absorbency and resiliency properties. Typical products include absorbent tissue products, absorbent fluff products and flat papers. The laterally expanded cellulose fibers exhibit: (i) a broadened X-Ray diffraction peak for the most prominent reflection having a width at half-height, (W1/2h)A, of at least about 3.0° 2?, (ii) broad overlapping maxima in their Raman spectrum between 285 and 500 cm?1, the height of the two tallest of said maxima in said spectrum between 285 and 500 cm?1 being between 35 and 50% of the height of the peak near 1098 cm?1 and (iii) a blue stain when treated with Graff C-stain, the stain exhibiting less red than the stains exhibited with bleached hardwood kraft fibers and bleached softwood kraft fibers.Type: GrantFiled: April 27, 2012Date of Patent: June 3, 2014Inventors: Steven L. Edwards, Rajai H. Atalla
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Publication number: 20140141336Abstract: An insulating (nonconductive) microporous polymeric battery separator comprised of a single layer of enmeshed microfibers and nanofibers is provided. Such a separator accords the ability to attune the porosity and pore size to any desired level through a single nonwoven fabric. Through a proper selection of materials as well as production processes, the resultant battery separator exhibits isotropic strengths, low shrinkage, high wettability levels, and pore sizes related directly to layer thickness. The overall production method is highly efficient and yields a combination of polymeric nanofibers within a polymeric microfiber matrix and/or onto such a substrate through high shear processing that is cost effective as well. The separator, a battery including such a separator, the method of manufacturing such a separator, and the method of utilizing such a separator within a battery device, are all encompassed within this invention.Type: ApplicationFiled: November 20, 2012Publication date: May 22, 2014Inventor: Brian G. Morin
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Patent number: 8715464Abstract: This invention relates to annual crop straw and stalk fibers having properties suitable for use in paper, paperboard, and related products disposable paper plates, cups, and bowls, molded and thermoformed pulp products, disposable food handling containers, tissue and toweling, and absorbent products such as airlaid roll goods, wipes, diapers and feminine hygiene articles. Annual crop straw or stalk is the waste product from the harvesting of the food including soy, wheat, corn, rice, and oats. The food chain is not impacted by use of these stalks and straw. Currently, most of the straw or stalk is burned, tilled under for soil amendment, or otherwise disposed of. Use of this stalk or straw for paper, paperboard and related products, and absorbent products manufacture including any product made from cellulose fibers represents an opportunity to provide additional income to farmers and a green alternative to wood pulp and therefore conserve trees.Type: GrantFiled: May 21, 2012Date of Patent: May 6, 2014Assignee: Pure Pulp Products, Inc.Inventors: Richard Henry Young, Jason Heezen
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Patent number: 8709555Abstract: A media for digital high speed inkjet web press printing has a CD residual tensile energy absorption index greater than 300 J/Kg. The media includes a paper base having a MD/CD tensile stiffness index ratio of less than 2.0 and a tensile energy absorption index of greater than 500 J/Kg. The paper base includes a mixture of fibers having a softwood fiber to hardwood fiber ratio within a range of 3 to 7 to 7 to 1, an internal starch having a cationic starch to fiber ratio greater than 1.0%, and a filler within a range of about 1.0% to about 12.0% of paper base weight. The media further includes an image receiving coating on a side of the paper base.Type: GrantFiled: April 28, 2011Date of Patent: April 29, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Lokendra Pal, Jason Swei, Glenn T. Gentile, Sandeep K. Bangaru
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Patent number: 8668808Abstract: A flushable moist wipe or hygiene tissue including a hydraulically entangled nonwoven material impregnated with a wetting composition. The nonwoven material contains at least 70%, by fiber weight, pulp fibers and the rest manmade fibers and/or natural fibers with a length of at least 6 mm. The moist wipe or hygiene tissue has a length in the machine direction which exceeds the width in the cross-machine direction with at least 25%. The moist wipe or hygiene tissue has a wet strength in machine direction which is at least 3 times higher than the wet strength in cross-machine direction, wherein the wet strength in cross-machine direction is between 50 and 200 N/m.Type: GrantFiled: October 16, 2009Date of Patent: March 11, 2014Assignee: SCA Hygiene Products ABInventor: Mikael Strandqvist
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Patent number: 8662316Abstract: A filter medium for liquid filtration of fine texture exhibiting high strength when wetted with water, which filter medium is comprised of a wet-laid nonwoven fabric. There is provided a filter medium for liquid filtration comprised of a wet-laid nonwoven fabric, characterized in that through blending of 0.5 to 40 wt. % of unbeaten natural fibers, it exhibits a very fine texture, a lowering ratio, calculated from bursting strength in ordinary state and bursting strength when wetted with water, of 30% or below, and a bursting strength, had when wetted with water, of 300 kPa or greater.Type: GrantFiled: July 21, 2004Date of Patent: March 4, 2014Assignee: Hokuetsu Paper Mills, Ltd.Inventors: Nobuyuki Sakadume, Eiko Meguro, Toshihiko Soyama
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Publication number: 20140020856Abstract: The purpose of the present invention is to provide technology for regenerating pulp having high quality with compact pulp regenerating equipment and less energy. In the pulp regenerating method of the present invention, pulp slurry containing 1.5 wt % or more of a solid component including waste paper pulp is separated into a long fiber fraction and a short fiber fraction by using an outward type slit screen including an opening portion having a slit width in the range of 0.1 mm to 0.3 mm. The solid component ratio of the long fiber fraction and the short fiber fraction is in the range from 10:90 to 60:40, and the difference in Canadian Standard Freeness of the long fiber fraction and the short fiber fraction is in the range of 100 ml to 300 ml.Type: ApplicationFiled: January 24, 2012Publication date: January 23, 2014Applicants: AIKAWA IRON WORKS CO., LTD., NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Shisei Goto, Takaharu Noda, Hiroki Ohtake, Tatsumi Hosaka
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Patent number: 8632658Abstract: A multi-ply wiper/towel product includes at least one wet laid web having at least 10% fibrillated cellulosic microfiber, and at least about 40% wood pulp derived papermaking fibers. The at least one wet laid web has formed therein (i) a plurality of fiber-enriched hollow domed regions on the upper side of the at least one wet laid web having a relatively high local basis weight, (ii) connecting regions having a relatively lower local basis weight forming a network interconnecting the relatively high local basis weight domed regions of the one wet laid web, and (iii) transition areas with upwardly and inwardly inflected consolidated fibrous regions transitioning from the connecting regions into the domed regions.Type: GrantFiled: February 5, 2013Date of Patent: January 21, 2014Assignee: Georgia-Pacific Consumer Products LPInventors: Joseph H. Miller, Daniel W. Sumnicht, Ayanna M. Bernard, Sanjay Wahal
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Patent number: 8608906Abstract: A method to prepare aqueous furnishes useful as feedstock in the manufacture of very high-mineral content products, particularly paper sheets having mineral filler content up to 90% that display the required physical properties for the intended applications; the furnishes comprise fibrillated long fibers/mineral fillers mixed with anionic acrylic binders and co-additives, in presence or absence of cellulose fibrils; the fibrillated long fibers and cellulose fibrils provide high surface area for greater filler fixation and the reinforcement backbone network that ties all of the product components together; the anionic binders allow rapid and strong fixation of filler particles onto the surfaces of fibrils when mixing is conducted at temperatures higher than the glass transition temperature (Tg) of the binder. The aqueous furnish provides excellent filler retention and drainage during product fabrication.Type: GrantFiled: September 29, 2011Date of Patent: December 17, 2013Assignee: FPInnovationsInventors: Makhlouf Laleg, Xujun Hua
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Patent number: 8568563Abstract: Methods of making the burnthrough resistant non-woven mat include forming the mat from glass fibers and at least two binders, a first binder having a vinyl component and a second binder having a strengthening component. The vinyl component may be, for example, ethylene vinyl chloride, and the strengthening component may be, for example, melamine formaldehyde. In one method, the vinyl component is added to the glass fibers by a beater addition process and the strengthening component is sprayed onto the glass fibers. The burnthrough resistant non-woven mat may be used in conjunction with an insulation blanket, and may be especially suited to use in insulating aircraft.Type: GrantFiled: January 14, 2013Date of Patent: October 29, 2013Assignee: Jonhs ManvilleInventor: Glenda Beth Bennett
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Patent number: 8540846Abstract: A multi-ply wiper/towel product includes at least one wet laid web including at least 10% fibrillated cellulosic microfiber, and at least about 40% wood pulp derived papermaking fibers. The at least one wet laid web has formed therein (i) a plurality of fiber-enriched hollow domed regions on the upper side of the at least one wet laid web having a relatively high local basis weight, and (ii) connecting regions of a relatively lower local basis weight forming a network interconnecting the relatively high local basis weight domed regions of the one wet laid web. Transition areas are provided in the at least one wet laid web with upwardly and inwardly inflected consolidated fibrous regions transitioning from the connecting regions into the domed regions, and the at least one wet laid web exhibits a differential pore volume for pores under 5 microns in a diameter of at least about 75 mm3/g/micron.Type: GrantFiled: July 28, 2011Date of Patent: September 24, 2013Assignee: Georgia-Pacific Consumer Products LPInventors: Joseph H. Miller, Daniel W. Sumnicht, Ayanna M. Bernard, Sanjay Wahal
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Patent number: 8524041Abstract: Embodiments for methods and apparatuses for forming a nonwoven web are described herein. In one embodiment, an apparatus includes one or more sources configured to dispense a first fluid flow stream comprising a fiber and a second fluid flow stream also comprising a fiber. The apparatus also includes a mixing partition downstream from the one or more sources, where the mixing partition is positioned between the first and second flow streams from the one or more sources. The mixing partition defines one or more openings that permit fluid communication between the two flow streams. The apparatus also includes a receiving region situated downstream from the one or more sources and designed to receive at least a combined flow stream and form a nonwoven web by collecting fiber from the combined flow stream.Type: GrantFiled: August 20, 2012Date of Patent: September 3, 2013Assignee: Donaldson Company, Inc.Inventors: Hemant Gupta, Brad E. Kahlbaugh
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Publication number: 20130199743Abstract: The present invention relates to pressed fiberboard articles made using a binderless wet process from a combination of fibers and particles. A mixture of particles (e.g., wood particles) and cellulosic fibers is formed into a panel using only water, heat and pressure. The present invention is further directed to fiberboard articles having uniform density cores or higher density cores.Type: ApplicationFiled: February 1, 2013Publication date: August 8, 2013Inventors: Christine M. Lee, John F. Hunt
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Publication number: 20130186580Abstract: Hardwood pulp fiber-containing structures, more particularly to eucalyptus pulp fiber-containing fibrous structures that may exhibit improved fiber densification and/or improved softness compared to known hardwood pulp fiber-containing fibrous structures are provided.Type: ApplicationFiled: January 17, 2013Publication date: July 25, 2013Applicant: THE PROCTER & GAMBLE COMPANYInventor: THE PROCTER & GAMBLE COMPANY
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Patent number: 8449720Abstract: The invention relates to a method of making a paper or paper board, in which method cut pulp is prepared by cutting basic cellulosic fiber pulp at the consistency of at least 25% so that the average fiber length of the basic pulp is decreased by more than 25% and the SR number of the cut pulp is at most 20% higher than that of the basic pulp, and the cut pulp is used as a raw material in the preparation of a stock.Type: GrantFiled: June 17, 2010Date of Patent: May 28, 2013Assignee: Stora Enso OyjInventors: Kalle Ekman, Heini Eskola, Antti Korpela
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Patent number: 8444813Abstract: A method for preparing aramid insulating paper, includes the operations of: providing aramid pulp slurry and aramid short fiber slurry at respective desired concentrations; blending, beating and fluffing the aramid pulp slurry and the aramid short fiber slurry in a given ratio to afford a paper pulp at a desired concentration; transiting the paper pulp to a papermaking machine fitted with a head box to form and make wet paper sheets; pressing to dewater the wet paper sheets and drying the dewatered paper sheets; and calendering the dried paper sheets at a high temperature to obtain the aramid insulating paper, wherein in operation iii), at least one ultrasonic generator is mounted on the head box to apply directional ultrasonic waves to the paper pulp flowing through the heat box. The aramid insulating paper prepared according to the method of the invention has enhanced strength, smoothness and uniformity.Type: GrantFiled: September 5, 2011Date of Patent: May 21, 2013Inventor: Zhou Zhong
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Patent number: 8394236Abstract: An absorbent sheet of cellulosic fibers includes a mixture of hardwood fibers and softwood fibers arranged in a reticulum having (i) a plurality of pileated fiber enriched regions of a relatively high local basis weight each extending a distance in the cross-machine direction (CD) of the sheet and interconnected by way of (ii) a plurality of lower local basis weight linking regions that each extend a distance in the machine direction (MD) of the sheet and whose fiber orientation is biased along the direction between pileated regions interconnected thereby. The relative basis weight, degree of pileation, hardwood to softwood ratio, fiber length distribution, fiber orientation, and geometry of the reticulum are controlled such that the sheet exhibits a percent CD stretch that is at least about 2.75 times the machine direction to cross-machine direction (MD/CD) dry tensile ratio of the sheet.Type: GrantFiled: February 22, 2012Date of Patent: March 12, 2013Assignee: Georgia-Pacific Consumer Products LPInventors: Steven L. Edwards, Guy H. Super, Stephen J. McCullough, Ronald R. Reeb, Hung Liang Chou, Kang Chang Yeh, John H. Dwiggins, Frank D. Harper
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Patent number: 8366880Abstract: Fibrous support intended to be impregnated, the fibers of which are formed 100% of cellulose fibers, characterized in that it presents, before creping or embossing, a wet traction strength of over 2.4 N/15 mm in the cross-machine direction, a water absorption capacity of at least 300% and contains less than 2% dry wet strength 10 agent in comparison with the dry weight of the fibers.Type: GrantFiled: January 17, 2012Date of Patent: February 5, 2013Assignee: Ahlstrom CorporationInventor: Francois Toubeau
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Patent number: 8308901Abstract: The disclosure provides a process of modifying a seed based fiber (SBF) to form an enhanced fiber additive (EFA). The process includes an acid treatment step and optionally at least one fiber modification step. Preferred EFA products and uses are described.Type: GrantFiled: October 13, 2010Date of Patent: November 13, 2012Assignee: Cargill, IncorporatedInventors: Kevin R. Anderson, David E. Garlie, Paula R. Krogmann, John T. McDonald, Jagannadh V. Satyavolu
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Publication number: 20120267063Abstract: A structuring layer of a structuring belt for structuring a wet fibrous web in a press section of a tissue papermaking machine for manufacturing high bulk tissue paper, the structuring layer having a web-carrying side with a surface for cooperating with the fibrous web, the surface having depressions distributed over the web-carrying side and forming a three-dimensional structure of the surface. The depressions altogether constitute 20-80% of the surface. Each depression has a dimension l of 0.25-2.5 mm in a first direction in the plane of the top surface area, a dimension b of 0.25-2.0 mm in a second direction in the plane of the top surface area, such directions being at right angles to each other, a mean depth d of 0.05-0.6 mm, and an area a as measured in the plane of the top surface area of 0.063-5.0 mm2.Type: ApplicationFiled: July 9, 2012Publication date: October 25, 2012Applicant: Albany International Corp.Inventors: Ingvar Berndt Erik KLERELID, Ola Thomasson, Bo-Christer Aberg, Cary P. Johnson, John J. LaFond
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Patent number: 8277610Abstract: A xerographic paper and method of forming includes mechanical fiber and a predetermined curl control defined by a split sheet contraction measurement. The split sheet contraction can be between about 0.8 and about 1.2 and between about 0.9 and about 1.1. Split sheet contraction is defined by a relationship of paper shrinkage in a cross-direction to paper shrinkage in a machine-direction and between the two sides of the sheet when split in the Z-direction.Type: GrantFiled: April 10, 2007Date of Patent: October 2, 2012Assignee: Xerox CorporationInventor: Bruce Irwin Katz
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Publication number: 20120132381Abstract: The invention relates to a method for manufacturing nanostructured paper or board and a novel paper or board. The method comprises providing a liquid suspension of nanocellulose-containing material, forming a web from the suspension and drying the web in order to form paper or board. According to the invention, the water content of the suspension at the time of beginning of the drying is 50% or less by weight of liquids so as to form a paper or board having an average pore size between 200 and 400 nm. By means of the invention, very opaque paper, for example for printing applications, can be manufactured with low energy consumption.Type: ApplicationFiled: June 7, 2010Publication date: May 31, 2012Applicants: STORA ENSO OYJ, UPM-KYMMENE CORPORATIONInventors: Hans-Peter Hentze, Jenni Sievanen, John Kettle, Artem Kulachenko, Antti Korpela, Jukka Ketoja, Erkki Hellen, Tuomo Hjelt, Jaakko Hiltunen, Eila Turunen, Asko Sneck
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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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Publication number: 20120111519Abstract: Fibrous support intended to be impregnated, the fibers of which are formed 100% of cellulose fibers, characterized in that it presents, before creping or embossing, a wet traction strength of over 2.4 N/15 mm in the cross-machine direction, a water absorption capacity of at least 300% and contains less than 2% dry wet strength 10 agent in comparison with the dry weight of the fibers.Type: ApplicationFiled: January 17, 2012Publication date: May 10, 2012Applicant: AHLSTROM CORPORATIONInventors: François TOUBEAU, Régis DUMONT ROTY