Fibers Of Different Dimensions Patents (Class 162/149)
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Patent number: 8048266Abstract: A method of manufacturing a multilayer fibrous product. The product comprises at least two overlapping layers, each of which has a different fiber composition, and in the production of the product, chemical short stock is used at least partly. In the method, short stock is brought to a screening stage where fines, which pass a screen having an average hole size of 0.2-1.5 mm, are separated from it, in order to prepare at least two fiber fractions having different fiber compositions, and the fractions generated are recovered and included in different layers of the same fibrous product. With the invention, it is possible to screen an initial material and form a product which has better properties than a corresponding product, the initial material pulp of which has only been refined.Type: GrantFiled: September 11, 2007Date of Patent: November 1, 2011Assignee: M-real OyjInventors: Seppo Katajamäki, Esa Hassinen, Tom Nickull
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Publication number: 20110247772Abstract: Fibrous materials made from multiple populations of fibers, and compositions related to preparing such, are disclosed. In some instances, fiber populations can have different native surfaces, in which at least one of the populations can be surface modified, for example by the use of a polycation (e.g., a polyamine), secondary polymers, complementary polymers, and/or other agents. These populations can be combined to form a fibrous composition, where the surface treatments can enhance properties of the end product. Populations of fibers can also have other physically varying characteristics (e.g., shapes and sizes). Such compositions can be utilized in a variety of applications such as paper products, filters, fire-retardant fibrous products, protein adsorbing fibrous materials, and fibrous sheets having conducting properties. Methods of preparing portions or the entirety of such fibrous materials are also disclosed.Type: ApplicationFiled: March 22, 2011Publication date: October 13, 2011Inventors: Patrick D. Kincaid, Michael C. Berg, David S. Soane, Gangadhar Jogikalmath
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Patent number: 8029645Abstract: Soft and strong fibrous structures and more particularly soft and strong fibrous structures that contains less softwood fibers than known fibrous structures and methods for making such soft and strong fibrous structures are provided.Type: GrantFiled: January 10, 2011Date of Patent: October 4, 2011Assignee: The Procter & Gamble CompanyInventor: Khosrow Parviz Mohammadi
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Publication number: 20110186252Abstract: In an engineered composite product containing cellulose fibres, cellulosic fibrillar fines and pigment, the main component of the composite product is pigment with a percentage of 40-80% by weight, the percentage of cellulosic fibrillar fines is 15-40% by weight, and the percentage of cellulose fibres is 5-30% by weight. Method of making the engineered composite product comprises the steps of combining said components in an aqueous solution and preparing the composite product by de-watering the aqueous solution. The components are combined in the aqueous solution in such proportion that the percentage of pigment in the final composite product is 40-80% by weight, the percentage of cellulosic fibrillar fines is 15-40% by weight, and the percentage of cellulose fibres is 5-30% by weight.Type: ApplicationFiled: August 3, 2009Publication date: August 4, 2011Applicant: UPM-KYMMENE CORPORATIONInventors: Ramjee Subramanian, Hannu Paulapuro
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Patent number: 7906218Abstract: An image supporting medium includes a raw base paper, and a film forming resin disposed on at least one side of the raw base paper, wherein the raw base paper is formed of fibers from between 0.5 and 3.0 mm in weighted average length. Additionally, the image supporting medium includes from between 1 and 40% filler by weight.Type: GrantFiled: November 30, 2004Date of Patent: March 15, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Christine E. Steichen, Chang S. Park, Xulong Fu, Emilio Adan, Ronald J. Selensky
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Patent number: 7897011Abstract: The invention relates to a high quality paperboard comprising at least two plies, a first ply having good surface properties and strength, and a second ply for providing the paperboard with bulk wherein the second ply comprises hardwood CTMP. This paperboard has an internal strength and a bending resistance that is comparable with conventional high quality paperboard based on softwood CTMP. The invention also relates to products manufactured of the paperboard.Type: GrantFiled: February 9, 2006Date of Patent: March 1, 2011Assignee: Stora Enso ABInventors: Frank Peng, Isto Heiskanen, Mika Riikonen
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Patent number: 7828931Abstract: 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 relatively high local basis weight interconnected by way of (ii) a plurality of lower local basis weight-linking regions whose fiber orientation is biased along the machine direction between pileated regions interconnected thereby, wherein the sheet exhibits a % CD stretch which is at least about 2.75 times the dry tensile ratio of the sheet. Tensile ratios of from about 0.4 to about 4 are readily achieved.Type: GrantFiled: July 14, 2009Date of Patent: November 9, 2010Assignee: Georgia-Pacific Consumer Products LPInventors: Steven L. Edwards, Stephen J. McCullough
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Publication number: 20100155006Abstract: Conductive nonwoven webs are disclosed. The nonwoven webs contain pulp fibers combined with conductive fibers. In one embodiment, the webs are made in a wetlaid tissue or paper making process. The pulp fibers contained in the webs may comprise softwood fibers, while the conductive fibers may comprise carbon fibers. Base webs can be produced having a resistance of less than about 100 Ohms/square in one embodiment. Once produced, the conductive material can be cut into slits that are then wound on spools. From the spools, the conductive slits can be fed into a process for making any suitable product.Type: ApplicationFiled: December 22, 2008Publication date: June 24, 2010Applicant: Kimberly-Clark Worldwide, Inc.Inventors: Thomas Michael Ales, Davis-Dang H. Nhan, Duane Joseph Shukoski
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Patent number: 7731819Abstract: An absorbent sheet of cellulosic fiber typically includes at least about 15% by weight of high coarseness, generally tubular and lignin-rich cellulosic fiber based on the combined weight of cellulosic fiber in the sheet. Lignin-rich high coarseness, generally tubular fiber employed may be characterized by a coarseness of at least about 20 mg/100 m and an average length of 2 mm. The sheet is prepared by way of a process including applying a dewatered web to a heated rotating cylinder and creping the web from the heated cylinder with an undulatory creping blade. Preferred lignin-rich, high coarseness, generally tubular fibers include thermo and chemi mechanical pulps. A particularly preferred embodiment is a sheet including at least about 15% BCTMP.Type: GrantFiled: October 13, 2009Date of Patent: June 8, 2010Assignee: Georgia - Pacific Consumer Products LPInventors: Anthony O. Awofeso, Kang C. Yeh, Ronald R. Reeb, Henry Chou, Bruce W. Janda
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Patent number: 7588660Abstract: 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 relatively high local basis weight interconnected by way of (ii) a plurality of lower local basis weight linking regions whose fiber orientation is biased along the machine direction between pileated regions interconnected thereby, wherein the sheet exhibits a % CD stretch which is at least about 2.75 times the dry tensile ratio of the sheet. Tensile ratios of from about 0.4 to about 4 are readily achieved.Type: GrantFiled: April 12, 2005Date of Patent: September 15, 2009Assignee: Georgia-Pacific Consumer Products LPInventors: Steven L. Edwards, Stephen J. McCullough
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Publication number: 20090211718Abstract: 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: April 11, 2006Publication date: August 27, 2009Applicant: AHLSTROM CORPORATIONInventors: Francois TOUBEAU, Regis DUMONT ROTY
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Patent number: 7449085Abstract: Absorbent paper products, such as paper towels, are disclosed which have a combination of high absorbent capacity and a moderate to low rate of absorbency for hand protection. These properties can be produced, for example, using a throughdried basesheet, such as an uncreped throughdried sheet, in which at least one surface of which has been printed with a patterned moisture barrier coating and creped. The presence of the moisture barrier coating on the surface retards the absorbent rate for that side of the sheet while allowing a significant amount of liquid to pass through to the center of the sheet.Type: GrantFiled: November 1, 2006Date of Patent: November 11, 2008Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Michael Alan Hermans, Richard Joseph Behm, Mike Thomas Goulet, Mark John Hassman, Jeffrey Janne Johnson, Jeffrey Dean Lindsay, Rebecca Catherine Mohr, Maurizio Tirimacco
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Patent number: 7402225Abstract: The process according to the invention comprises: a step in which chopped filaments and discontinuous PVOH fibers are dispersed in a process water, followed by a step in which a bed is formed in a forming device by passing the dispersion over a forming cloth through which the process water is drained, the filaments and fibers being retained on said cloth, followed by a heat treatment step in a stoving device. The PVOH fibers impart rigidity to the bed of fibers being formed. This process provides a veil with a very high tensile strength for low proportions of binder.Type: GrantFiled: March 19, 2003Date of Patent: July 22, 2008Assignee: Saint-Gobain Vetrotex France S.A.Inventor: Michel Droux
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Patent number: 7381297Abstract: Fibrous structures, especially fibrous structures incorporated into facial tissue, toilet tissue and paper towel and napkin products, that comprise a fiber having a length of from about 0.4 mm to about 1.2 mm and a coarseness of from about 3.0 mg/100 m to about 7.5 mg/100 m, wherein the fibrous structures exhibit a lint value of greater than about 3.5 to about 15, and processes for making such fibrous structures are provided.Type: GrantFiled: February 25, 2003Date of Patent: June 3, 2008Assignee: The Procter & Gamble CompanyInventors: Diego Antonio Hernandez-Munoa, Kenneth Douglas Vinson, Dale Gary Kavalew, Patrick Kip Edwards, John Allen Manifold
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Patent number: 7226526Abstract: The invention relates to a starch and fiber mixture, and the application of a starch and fiber mixture in paper manufacturing. The starch and fiber mixture is applied to a paper mat, after the paper mat is formed. The starch and fiber mixture may be obtained by the selective filtering of white water from the papermaking process, particularly by use of a pressure screen.Type: GrantFiled: November 22, 2005Date of Patent: June 5, 2007Assignee: Corn Products International, Inc.Inventors: Philip Strong, Brian Edward Ireland, John Gregory Kinney
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Patent number: 7094319Abstract: The object of the invention is an additive for paper making by means of which the dusting tendency of paper can be reduced. The agent is based on starch, the molecular size of which has been reduced, and which has been cationized to a charge of less than 1.5 meq/g with a quaternary nitrogen compound. The agent is added to the fiber pulp for paper making prior to web formation.Type: GrantFiled: January 30, 2004Date of Patent: August 22, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Tapio Vihervaara, Kari Luukkonen, Veikko Niinivaara
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Patent number: 7083703Abstract: A filler comprising cellulose or lignocellulose fibrils on which light-scattering material particles have been deposited, and a process for the manufacture thereof. In the filler according to the invention, an alkyl derivative of cellulose, such as CMC, has been sorbed to the fibrils. Such a filler can be prepared from a source material containing cellulose or lignocellulose fibrils by first forming a fibril suspension, into which there are fed source materials forming an inorganic or organic salt that, when precipitating, forms a light-scattering pigment. The filler according to the invention has very good strength properties; in particular, good bond strength is achieved by means of it. The concentration of mineral pigment in paper can be increased and, furthermore, the grammage of paper can be lowered without the other important properties of the paper deteriorating.Type: GrantFiled: April 24, 2002Date of Patent: August 1, 2006Assignee: M-real OyjInventors: Outi Aho, Petri Silenius, Maija Pitkänen, Soili Hietanen
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Patent number: 7011729Abstract: The invention relates to a starch and fiber mixture, and the application of a starch and fiber mixture in paper manufacturing. The starch and fiber mixture is applied to a paper mat, after the paper mat is formed. The starch and fiber mixture may be obtained by the selective filtering of white water from the papermaking process, particularly by use of a pressure screen.Type: GrantFiled: November 12, 2003Date of Patent: March 14, 2006Assignee: Corn Products International, Inc.Inventors: Philip Strong, Brian Edward Ireland, John Gregory Kinney
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Patent number: 6998016Abstract: The present invention is a through-air-drying process for producing a fibrous web that possesses not only softness and absorbency but also strength. The method of the present invention monitors and controls the overall charge in the headbox.Type: GrantFiled: December 20, 2001Date of Patent: February 14, 2006Assignee: Fort James CorporationInventors: Kang Chang Yeh, Gary L. Worry, Thomas N. Kershaw, Henry S. Ostrowski
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Patent number: 6964725Abstract: The present invention is a tissue product comprising at least one tissue sheet. Each tissue sheet comprises a first side and an opposing second side. At least one tissue sheet comprises selectively treated pulp fiber treated with at least one hydrophobic chemical additive distributed non-uniformly in the z-direction within the tissue sheet. The tissue sheet has a % z-directional hydrophobic chemical additive gradient between the first side of the tissue sheet and the second side of the tissue sheet of about 20% or greater.Type: GrantFiled: November 6, 2002Date of Patent: November 15, 2005Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Thomas Gerard Shannon, James Daniel Lorenz, David Andrew Moline, Troy Michael Runge, Thomas Hampshire Schulz
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Patent number: 6908531Abstract: The invention relates to a method for producing a calendered paper web. According to the method, a paper web is formed from a fibrous raw material in a paper machine, and the paper web is calendered. According to the invention, a fibrous raw material is used which is at least partly made up of a chemimechanical pulp of a species of the Populus family, and the calendering is performed by online soft-calendering. By means of the invention, the gloss and smoothness of papers can be improved without decreasing their bulk.Type: GrantFiled: January 29, 2001Date of Patent: June 21, 2005Assignee: M-Real OyjInventors: Soili Hietanen, Markku Leskelä
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Patent number: 6841041Abstract: A method for producing a pulp molded article (7) comprising the steps of supplying a pulp slurry into the cavity (1) of a mold (10) composed of a set of splits (3 and 4), the set of splits (3 and 4) being assembled together to form the cavity (1) with a prescribed configuration, to form a pulp deposited body (5), feeding a fluid into the cavity (1) to press the pulp deposited body (5) onto the inner wall of the cavity (1) for dewatering.Type: GrantFiled: January 2, 2003Date of Patent: January 11, 2005Assignee: Kao CorporationInventors: Yoshiaki Kumamoto, Kenichi Otani, Shinji Otakura, Tokuo Tsuura, Masataka Ishikawa, Toshiyuki Suga, Akira Nonomura
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Publication number: 20040256067Abstract: The invention relates to the use of precipitated calcium carbonates (PCC) as fillers for the manufacture of base paper together with mechanical hardwood pulp and chemical softwood pulp, and to a method for the manufacture of base paper, in which method pulp produced from hard woods, in particular from the wood of the genus Populus, and chemical softwood pulp are used together with a PCC filler. The use of precipitated calcium carbonate (PCC) for the manufacture of base paper together with mechanical hardwood pulp and chemical softwood pulp is characterized in that ≧20 wt-% of the fibres of the mechanical hardwood pulp is included in the fibre size fraction of <200 mesh and 10-40 wt-% of them is included in the fibre size fraction of {fraction (28/48)} mesh, the brightness of the mechanical hardwood pulp is ≧75, the particle size distribution of the precipitated calcium carbonate is 90%≦9 &mgr;m, 50%≦5 &mgr;m and 20%≦1.5 &mgr;m, and the basis weight of the base paper is 25-150 g/m2.Type: ApplicationFiled: May 20, 2004Publication date: December 23, 2004Inventors: Markku Leskela, Stina Nygard, Gudrun Pauler-Johansson, Maija Pitakanen, Eeva Anas
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Publication number: 20040244930Abstract: The invention relates to a method for improving the manufacturing and usage economy of a filler, in particular a calcium carbonate based filler, used in the manufacture of paper and board, which calcium carbonate based filler is prepared by precipitating calcium carbonate particles onto the surface of noil fibrils. The invention also relates to a method by means of which it is possible to manufacture and/or produce said filler in a form that can be used directly in paper and board applications. Further, an object of the invention is to provide a method for manufacturing paper and/or board, which method makes use of chemical pulp having said filler incorporated therein as dried in chemical pulp bales.Type: ApplicationFiled: April 22, 2004Publication date: December 9, 2004Inventors: Petri Silenius, Risto Kekki
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Publication number: 20040231814Abstract: Enhancement of cellulosic paper products with coarse diameter glass wool fibers (average diameter of from about 5.5 &mgr;m to about 11 &mgr;m) results in stronger, more air resistant, and less hygroexpansive paper products. Paper products comprising cellulose pulp and coarse diameter glass wool fibers are disclosed. Additionally disclosed are methods for making coarse diameter glass wool fiber enhanced cellulosic paper products.Type: ApplicationFiled: May 23, 2003Publication date: November 25, 2004Applicant: Evanite Fiber CorporationInventor: Tejendra M. Singh
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Publication number: 20040188048Abstract: The object of the invention is an additive for paper making by means of which the dusting tendency of paper can be reduced. The agent is based on starch, the molecular size of which has been reduced, and which has been cationized to a charge of less than 1.5 meq/g with a quaternary nitrogen compound. The agent is added to the fiber pulp for paper making prior to web formation.Type: ApplicationFiled: January 30, 2004Publication date: September 30, 2004Inventors: Tapio Vihervaara, Kari Luukkonen, Veikko Niinivaara
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Patent number: 6767851Abstract: A non-woven mat useful for a wide variety of purposes, including forming reinforced resin products, is produced in a manner having different specific uses of, and advantages over, conventional chopped strand mats and conventional glass tissue. The mat is preferably made by the foam process (but may be made by the liquid process), and at speeds well in excess of 60 m./min., and has a substantially uniform construction even when low density (e.g. 100 g/m2 or less). At least 20% (preferably at least 85%) of the fibers are in fiber bundles with between 5-450 fibers/bundle. The fibers (typically at least 85%) have a length between 5-100 mm, preferably 7-50 mm, substantially the same as the length of the fiber bundle they are in. The fibers are preferably held in the bundles by substantially non-water soluble sizing, such as epoxy resin or PVOH. The fibers in the bundles typically have diameters of approximately 7-500 microns, preferably about 7-35 microns.Type: GrantFiled: April 5, 2000Date of Patent: July 27, 2004Assignee: Ahlstrom Glassfibre OyInventors: Kay Rökman, Juhani Jansson, Harri Kostamo, Juha Bohm
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Patent number: 6733628Abstract: Thermoplastic fibers of different melting points are present in an aqueous slurry of refractory fibers, binder and flocculant. The slurry is passed through a screen to form a wet body which is heated to dry the body and melt the thermoplastic fibers to bind the refractory fibers together.Type: GrantFiled: November 7, 2002Date of Patent: May 11, 2004Assignee: Saffil LimitedInventors: John Dinwoodie, Kathleen E. Wade, Stella M. Young
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Patent number: 6716495Abstract: An ink-jet recording apparatus is adapted to eject ink from an ink-jet head onto a recording medium held in position by means of an electrostatic adsorption system. The surface resistance of the recording medium is not greater than 1×1011 &OHgr;/□.Type: GrantFiled: November 14, 2001Date of Patent: April 6, 2004Assignee: Canon Kabushiki KaishaInventors: Hitoshi Yoshino, Noribumi Koitabashi, Katsumi Aoki, Hiroyuki Ogino, Yasunori Fujimoto
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Patent number: 6716313Abstract: The object of the invention is an additive for paper making by means of which the dusting tendency of paper can be reduced. The agent is based on starch, the molecular size of which has been reduced, and which has been cationized to a charge of less than 1.5 meq/g with a quaternary nitrogen compound. The agent is added to the fiber pulp for paper making prior to web formation.Type: GrantFiled: April 30, 2002Date of Patent: April 6, 2004Assignee: Raisio Chemicals, Ltd.Inventors: Tapio Vihervaara, Kari Luukkonen, Veikko Niinivaara
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Patent number: 6706340Abstract: A recording medium having a non-sized single-layer fibrous structure which is composed mainly of a fibrous material and contains no filler and employing a face of the single-layer fibrous structure as an ink-receiving face, wherein alumina hydrate of a boehmite structure and a cationic resin are present at least near the surface of the fibrous material.Type: GrantFiled: November 14, 2001Date of Patent: March 16, 2004Assignee: Canon Kabushiki KaishaInventors: Hitoshi Yoshino, Hiroyuki Ogino
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Patent number: 6692615Abstract: An organic substrate is manufactured from recycled waste paper, cotton fiber and cotton gin waste, and gypsum. The recycled waste products are combined to form a slurry mixture for processing by conventional paper making machinery into a substrate that may be used in sheet form or comminuted pieces.Type: GrantFiled: April 16, 2002Date of Patent: February 17, 2004Inventor: Timothy D. Cathey
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Publication number: 20030196772Abstract: An absorbent sheet of cellulosic fiber typically includes at least about 15% by weight of high coarseness, generally tubular and lignin-rich cellulosic fiber based on the combined weight of cellulosic fiber in the sheet. Lignin-rich high coarseness, generally tubular fiber employed may be characterized by a coarseness of at least about 20 mg/100 m and an average length of 2 mm. The sheet is prepared by way of a process including applying a dewatered web to a heated rotating cylinder and creping the web from the heated cylinder with an undulatory creping blade. Preferred lignin-rich, high coarseness, generally tubular fibers include thermo and chemi mechanical pulps. A particularly preferred embodiment is a sheet including at least about 15% BCTMP.Type: ApplicationFiled: April 2, 2003Publication date: October 23, 2003Inventors: Anthony O. Awofeso, Kang C. Yeh, Ronald R. Reeb, Henry Chou, Bruce W. Janda
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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: 6607636Abstract: An absorbent multilayered web includes a top surface layer, with the top surface layer including first and second fibers, wherein the first fibers are hydrophilic and the second fibers are hydrophobic, and further wherein the first and said second fibers are substantially uniformly distributed on the top surface layer, and at least one additional layer. A method of making an absorbent multi-layered web includes the steps of providing hydrophilic fibers; providing hydrophobic fibers; forming a first web layer of substantially uniformly distributed hydrophilic and hydrophobic fibers; creating at least a second web layer; and joining said first layer with said second layer.Type: GrantFiled: December 21, 2001Date of Patent: August 19, 2003Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Russell Frederick Ross, Susan Elaine Smith
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Patent number: 6599391Abstract: The invention relates to a filler used in paper manufacture and mainly consisting of calcium carbonate, and to a procedure for producing the filler. The filler consists of porous aggregates formed by precipitated calcium carbonate particles. In the procedure, calcium carbonate is precipitated.Type: GrantFiled: December 27, 2001Date of Patent: July 29, 2003Assignee: M-Real CorporationInventors: Petri Silenius, Markku Leskela
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Patent number: 6592712Abstract: A method for manufacture of loaded paper or paperboard products, comprising the steps of separating at least one process stream from the papermaking process, wherein the process stream includes fines and/or filler; combining the process stream with long fibers and thickening to form a residue; treating the residue to form fiber-filler complexes; and using the fiber-filler complexes in the papermaking process to form the paper.Type: GrantFiled: June 25, 2001Date of Patent: July 15, 2003Assignee: International Paper CompanyInventors: Alexander A. Koukoulas, Thomas E. Altman, M. C. Matthew, Thomas E. Amidon, Fernand Mora
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Patent number: 6579413Abstract: A wet-formed permeable mat composed of wet use chopped strands (WUCS), chopped roving, and potentially unidirectional roving coupled with an alkaline resistant binder are combined to create an randomly oriented open mat structure with a high degree of openness that can be used in cement backerboard applications. The cement backerboard that is subsequently formed from the wet-formed permeable mat has lower binder content, superior decorative finish, and better permeability control than known glass scrim systems and can be produced in a single continuous step.Type: GrantFiled: March 21, 2002Date of Patent: June 17, 2003Assignee: Owens Corning Fiberglas Technology, Inc.Inventor: Dale A. Grove
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Patent number: 6572735Abstract: A wet-formed composite defining latent voids and macro-cavities, the wet-formed composite having a basis weight greater than about 100 grams per square meter and a density of about 0.06 grams per cubic centimeter or more. The wet-formed composite comprises fibers and superabsorbent material, with the superabsorbent material present in an amount of about 10 dry weight percent or less, specifically about 5 dry weight percent or less, and particularly about 2 dry weight percent or less, but more than 0, based on the total dry weight of fibers and superabsorbent material present in the wet-formed composite. By virtue of the superabsorbent material having been allowed to swell and then shrink during the making of the wet-formed composite, macro-cavities are created. Densification compresses the macro-cavities. The resulting composite expands upon wetting and exhibits good absorbency properties.Type: GrantFiled: August 22, 2000Date of Patent: June 3, 2003Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Palani Raj Ramaswami Wallajapet, Ronald Lee Edens, Cheryl Ann Mocadlo, Sheng-Hsin Hu, Dmitry Yavich, David Michael Kale
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Patent number: 6551456Abstract: The present invention provides a synthetic fiber paper, the synthetic fiber paper comprises poly (phenylene terephthal amide) fiber, polyethylene glycol terephthalate fiber and powdered mica. The synthetic fiber paper has high-temperature resistance, high strength, low-deformability, resistivity against fire, burning resistance, resistance to chemical corrosion and excellent property of electric insulation, it can be widely applied in the field of mechano-electronics product, aviation, aerospace, military project for national defence, high-tech areas for civil use, high-voltage equipment, high-temperature circumstance as insulting material, it often can be used in composite materials with special use as structural material. The present invention also provides a process for preparing this synthetic fiber paper.Type: GrantFiled: September 3, 2002Date of Patent: April 22, 2003Assignee: Sichuan Foreign Economic Relations & Trade CorporationInventors: Xingli Wang, Shiyi Tao
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Patent number: 6547927Abstract: There is disclosed a water-decomposable fibrous sheet including water-dispersible fibers and water-insoluble carboxymethyl cellulose. The water-insoluble carboxymethyl cellulose has a degree of substitution for etherification (DE) falling between 0.3 and 0.6. In the water-insoluble carboxymethyl cellulose, the hydrogen of the carboxyl group in at least 95% of the carboxymethyl groups is substituted with a metal.Type: GrantFiled: September 18, 2000Date of Patent: April 15, 2003Assignee: Uni-Charm CorporationInventors: Naohito Takeuchi, Takayoshi Konishi, Jyoji Shimizu
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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: 20030051838Abstract: The present invention provides a synthetic fiber paper, the synthetic fiber paper comprises poly (phenylene terephthal amide) fiber, polyethylene glycol terephthalate fiber and powdered mica. The synthetic fiber paper has high-temperature resistance, high strength. low-deformability, resistivity against fire, burning resistance, resistance to chemical corrosion and excellent property of electric insulation, it can be widely applied in the field of mechano-electronics product, aviation, aerospace, military project for national defense, high-tech areas for civil use, high-voltage equipment, high-temperature circumstance as insulting material, it often can be used in composite materials with special use as structural material. The present invention also provides a process for preparing this synthetic fiber paper.Type: ApplicationFiled: September 3, 2002Publication date: March 20, 2003Applicant: Sichuan Foreign Economic Relations & Trade CorporationInventors: Xingli Wang, Shiyi Tao
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Publication number: 20030041988Abstract: The object of the invention is an additive for paper making by means of which the dusting tendency of paper can be reduced. The agent is based on starch, the molecular size of which has been reduced, and which has been cationized to a charge of less than 1.5 meq/g with a quaternary nitrogen compound. The agent is added to the fiber pulp for paper making prior to web formation.Type: ApplicationFiled: April 30, 2002Publication date: March 6, 2003Inventors: Tapio Vihervaara, Kari Luukkonen, Veikko Niinivaara
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Publication number: 20030041987Abstract: An acoustical panel has a fiberboard which includes a fibrous filler and a base binder, and a nodulated overlay disposed on the fiberboard, wherein the overlay includes nodulated wool and an overlay binder and has a substantially smooth surface. In one embodiment of the present invention, the fibrous filler is mineral wool and the base binder is granular starch. In an another embodiment of the present invention, the nodulated wool is nodulated mineral wool and the overlay binder is cooked pearl cornstarch.Type: ApplicationFiled: July 23, 2002Publication date: March 6, 2003Applicant: Armstrong World Industries, Inc.Inventors: Robert E. Foster, Larry R. Parks, James R. Lokey, John J. Janczura, Robert G. Ganse, Barry Buhay, Walter W. Chamberlain, John Felegi
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Patent number: 6521085Abstract: A method for producing a pulp molded article (7) comprising the steps of supplying a pulp slurry into the cavity (1) of a mold (10) composed of a set of splits (3 and 4) the set of splits (3 and 4) being assembled together to form the cavity (1) with a prescribed configuration, to form a pulp deposited body (5), feeding a fluid into the cavity (1) to press the pulp deposited body (5) onto the inner wall of the cavity (1) for dewatering.Type: GrantFiled: June 22, 2001Date of Patent: February 18, 2003Assignee: Kao CorporationInventors: Yoshiaki Kumamoto, Kenichi Otani, Shinji Otakura, Tokuo Tsuura, Masataka Ishikawa, Toshiyuki Suga, Akira Nonomura
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Recyclable thermoplastic moldable nonwoven liner for office partition and method for its manufacture
Patent number: 6517676Abstract: A rigid thermoformable recyclable nonwoven liner material is formed by a wet process on a papermaking machine. The rigid thermoformable nonwoven liner material is intended to be laminated to a woven fabric and then thermomolded around a wooden panel to form an office partition. The wet-laying process may consist entirely of conventional steps. The fiber furnish includes polyester matrix fibers and co-polyester/polyester bicomponent binder fibers. The web of fibers coming off the papermaking machine is passed through a foam press, which applies a water-based medium having polyvinyl chloride binder dispersed therein. The web is dried, treated again with a water-based medium having polyvinyl chloride binder dispersed therein and then dried again. The final product can be molded in a wide range of temperatures ranging from 225° to 300° F.Type: GrantFiled: January 6, 2000Date of Patent: February 11, 2003Assignee: Ahlstrom Mount Holly Springs, LLCInventor: Ashish Mathur -
Patent number: 6517673Abstract: The present invention relates to a soft, thick, single-ply, printed, absorbent paper product having a Yankee side and an air side wherein the absorbent paper is printed on before or after embossing on the Yankee side, air side, or both sides, said absorbent paper exhibiting a serpentine configuration. This inventions also relates to a process for the manufacture of such absorbent paper product having a basis weight of at least about 12.5 lbs. per 3000 square foot ream and having low sidedness, said tissue exhibiting: a specific total tensile strength of between 40 and 200 grams per 3 inches per pound per 3000 square foot ream, a cross direction specific wet tensile strength of between 2.75 and 20.0 grams per 3 inches per pound per 3000 square foot ream, the ratio of MD tensile to CD tensile of between 1.25 and 2.75, a specific geometric mean tensile stiffness of between 0.5 and 3.2 grams per inch per percent strain per pound per 3000 square foot ream, a friction deviation of less than 0.Type: GrantFiled: May 10, 2000Date of Patent: February 11, 2003Assignee: Fort James CorporationInventors: Michael S. Heath, T. Philips Oriaran, Mark S. Siegel, Frank D. Harper, John H. Dwiggins
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Publication number: 20030024668Abstract: A manufacturing process for a two-layered facing 1 includes: a front material preparation step 11; a backing material preparation step 21; and a molding step 31. The backing material preparation step 21 includes the following steps: a papermaking step 22 in which short fibers and pulp material are blended and made into a paper, the paper is then coated with a binding agent and dried to obtain a paper sheet 4; and a winding step 23 in which the paper sheet 4 is cut into a tape-like form and rolled into a ring shape to obtain a backing molding material 5. In the molding step 31, the two-layered facing 1 is manufactured by laminating together a front material 2 manufactured in front material preparation step 11 and the backing molding material 5 manufactured in backing material preparation step 21 and thermally molding the two materials together while applying pressure.Type: ApplicationFiled: July 29, 2002Publication date: February 6, 2003Applicant: EXEDY CORPORATIONInventors: Kunihiro Nomura, Yutaka Takahara
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Publication number: 20030019598Abstract: A laminate integrated by firmly jointing a heat-seal layer in web form made from a mixture of synthetic pulp having a branched configuration and synthetic short fiber to a substrate layer made from natural fiber. The synthetic pulp is made from a resin composition comprised of ethylene-&agr;,&bgr;-unsaturated carboxylic acid copolymer and polyethylene. This laminate has a high degree of air permeability and exhibits a high heat-seal strength and good hot tack even at a temperature of 130° C. On account of said properties it is adequately used as heat-seal paper suited for filter use, in particular raw material paper for tea bags.Type: ApplicationFiled: August 2, 2002Publication date: January 30, 2003Inventors: Norihiko Nakagawa, Yukio Kouno, Makoto Nakamaru