Additional Nonwoven Fabric Is A Spun-bonded Fabric Patents (Class 442/382)
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Patent number: 8246882Abstract: Materials and methods are provided for producing preform materials for impact-resistant composite materials suitable for liquid molding. Interlayers formed of nonwoven, continuous fibers, such as spunbonded, spunlaced, or mesh fabric, are introduced between non-crimped layers of unidirectional reinforcing fibers to produce a preform for use in liquid-molding processes to produce a composite member. Curing of the preform provides increased impact resistance by increasing the amount of energy required to propagate localized fractures due to impact.Type: GrantFiled: October 27, 2004Date of Patent: August 21, 2012Assignee: The Boeing CompanyInventor: Thomas Karl Tsotsis
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Publication number: 20120208422Abstract: The present invention provides a spunbond nonwoven fabric made of a specific crystalline resin composition having a melt flow rate of 25 to 80 g/10 min and a melting endotherm ?H of 65 to 100 J/g. More particularly, the invention provides a polypropylene spunbond nonwoven fabric having a very small fiber diameter and providing an excellent feel to the touch, and a polypropylene spunbond nonwoven fabric exhibiting high softness.Type: ApplicationFiled: September 13, 2010Publication date: August 16, 2012Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yohei Koori, Tomoaki Takebe, Yutaka Minami, Toshitaka Kanai
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Patent number: 8216411Abstract: Disclosed is a nonwoven web material comprising thermoplastic fibers or filaments and a method of manufacture thereof. The web material has properties desirable for use on machinery having conventional heat sealing stations. Also, disclosed is a nonwoven infusion web material comprising thermoplastic fibers or filaments and a method of manufacture thereof. The infusion web material has properties desirable for use in making infusion packages.Type: GrantFiled: March 28, 2011Date of Patent: July 10, 2012Assignee: Ahlstrom Nonwovens LLCInventors: Helen Viazmensky, John M. Allen, Richard T. Giovannoni
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Publication number: 20120164906Abstract: A laminate is generally provided having alcohol repellency properties. In one particular embodiment, the laminate includes a meltblown web bonded to a spunbond web (e.g., a SM laminate, a SMS laminate, a SMMS laminate, etc.). A fluorinated polymeric coating is attached to the surface of the spunbond web (e.g., grafted). The fluorinated polymeric coating comprises a perfluoroalkyl(alkyl) (meth)acrylate monomer polymerized on the surface of the spunbond web via exposure to a low frequency energy source. The perfluoroalkyl(alkyl) (meth)acrylate monomer has a perfluoroalkyl side groups comprising —(CF2)z—F, where z is an integer from 1 to 6. The laminate has an alcohol repellency of greater than 80%.Type: ApplicationFiled: December 22, 2010Publication date: June 28, 2012Applicant: KIMBERLY-CLARK WORLDWIDE, INC.Inventors: Ali Yahiaoui, Anthony S. Spencer, Linda Connor Sledge, John Joseph Lassig, Eric Edward Lennon
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Patent number: 8178189Abstract: A laminate usable as a diaper closure has a pair of generally contiguous outer fleece layers having longitudinally extending and parallel outer edges and a core layer of foil of LP or LLP polyethylene extending between the outer layers substantially a full width of the outer layers between the edges. The foil has a thickness between 5 ?m and 20 ?m. Bonds are provided between the core layer and each of the outer layers. The laminate has regions activated by stretching and in which the laminate is semielastric, and unactivated regions in which the laminate is not stretchy.Type: GrantFiled: April 14, 2009Date of Patent: May 15, 2012Assignee: Nordenia Technologies GmbHInventor: Marcus Schoenbeck
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Publication number: 20120097353Abstract: A substrate for an endless belt in a papermaking machine comprising a plurality of preformed layers coated or impregnated with a polymeric or rubber material. Each preformed layer may be a textile material. At least one layer contains a matrix of preformed reinforcing components. The individual layers are first coated with a polymer resin or rubber material and then combined/stacked and cured/bonded to form the substrate of the belt.Type: ApplicationFiled: January 3, 2012Publication date: April 26, 2012Applicant: Albany International Corp.Inventor: Keith FITZPATRICK
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Patent number: 8148279Abstract: The invention provides durable nonwoven fabrics comprising staple fibers. Methods of preparing durable nonwoven fabrics based on staple fibers are also provided. The methods can include the steps of at least one of needle punching and hydroentangling. The durable nonwoven fabric can be subjected to additional bonding techniques, such as resin bonding and/or thermal bonding. The durable nonwoven fabrics of the invention provide improved durability over conventional nonwoven fabrics. Further advantages of the inventive nonwoven fabrics include maintaining the smooth surface qualities of the fabric and desirable feel of the fabric even with the enhanced durability. The inventive nonwoven fabrics can also be subjected to additional post-processing techniques that conventional nonwoven fabrics would otherwise be unable to withstand. Further, inks and/or dyes can more readily become adhered to the smooth nature of the surfaces of the inventive durable nonwoven fabrics.Type: GrantFiled: April 9, 2009Date of Patent: April 3, 2012Assignee: North Carolina State UniversityInventors: Nagendra Anantharamaiah, Behnam Pourdeyhimi
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Patent number: 8129298Abstract: A nonwoven fabric laminate possesses excellent elasticity, softness, water resistance, fuzz resistance and curl resistance, and has less stickiness. The nonwoven fabric laminate includes at least one meltblown nonwoven fabric layer and mixed-fiber spunbonded nonwoven fabric layers on both surfaces of the at least one meltblown nonwoven fabric layer, the mixed-fiber spunbonded nonwoven fabric layers each comprising mixed fibers including 10 to 90 wt % of continuous fibers of a thermoplastic elastomer (A) and 90 to 10 wt % of continuous fibers of a thermoplastic resin (B) other than the thermoplastic elastomer (A) ((A)+(B)=100 wt %).Type: GrantFiled: December 27, 2006Date of Patent: March 6, 2012Assignee: Mitsui Chemicals, Inc.Inventors: Shigeyuki Motomura, Kenichi Suzuki, Naosuke Kunimoto
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Publication number: 20120043272Abstract: An object of the present invention is to provide a composite membrane support composed of a dry process thermoplastic resin filaments nonwoven fabric having a significantly high uniformity to enable formation of a porous layer free from strike-through or a defect such as pinhole at the film formation, producing no skin layer defect at the formation of a skin layer, and being excellent in the mechanical strength and dimensional stability at high temperatures, and a high-performance composite membrane and a composite membrane element each using the composite membrane support. The composite membrane support of the present invention is a laminate dry process thermoplastic resin filaments nonwoven fabric comprising three or more layers containing at least a meltblown fiber layer as an interlayer and spunbond fiber layers on both sides of the interlayer, wherein the average value of air flow resistance is from 2.0 to 30.Type: ApplicationFiled: April 28, 2010Publication date: February 23, 2012Inventors: Minoru Yoshida, Ikuo Ueno, Norihisa Matsuo, Hirotoshi Ishizuka, Hiroki Fujioka, Mieko Nishi
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Publication number: 20120045956Abstract: Fabricated articles are disclosed which comprise a polypropylene impact copolymer. The propylene impact copolymer composition comprises from 60 to 90 percent by weight of the impact copolymer composition of a matrix phase, which can be a homopolymer polypropylene or random polypropylene copolymer having from 0.1 to 7 mol percent of units derived from ethylene or C4-C10 alpha olefins. The propylene impact copolymer composition also comprises from 10 to 40 percent by weight of the impact copolymer composition of a dispersed phase, which comprises a propylene/alpha-olefin copolymer having from 6 to 40 mol percent of units derived from ethylene or C4-C10 alpha olefins, wherein the dispersed phase has a comonomer content which is greater than the comonomer content in the matrix phase. The propylene impact copolymer composition is further characterized by having the ratio of the matrix MFR to the dispersed phase MFR being 1.2 or less.Type: ApplicationFiled: August 19, 2010Publication date: February 23, 2012Applicant: Dow Global Technologies Inc.Inventors: Li-Min Tau, Gert J. Claasen, Charles R. Crosby, III, Alechia Crown, John Kaarto
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Publication number: 20120003372Abstract: An absorbent food pad is disclosed having nonwoven top and bottom layers with an equal percentage surfactant by weight. The pad provides liquid strikethrough and absorbency without drying a food product, regardless of orientation of the pad when placed on a food tray.Type: ApplicationFiled: July 2, 2010Publication date: January 5, 2012Inventors: Sayandro VERSTEYLEN, Ronald JENSEN, Richard BEU
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Patent number: 8034729Abstract: A separation membrane support substrate characterized by being composed of a laminated nonwoven fabric comprising a front layer as the resin coating layer, a middle layer and a back layer which are integrally formed by heat bonding, and by satisfying the following conditions (1) to (5): (1) The front layer has at least one layer comprising thermoplastic resin filaments with a single filament diameter of 7-30 ?m; (2) the middle layer has at least one layer comprising melt blown fibers with a single fiber diameter of no greater than 5 ?m, and a fiber basis weight of at least 1 g/m2 and comprising no more than 30 wt % of the total fiber basis weight; (3) the back layer has at least one layer comprising thermoplastic resin filaments with a single filament diameter of 7-20 ?m, and has a fiber basis weight of 3-40 g/m2; (4) the laminated nonwoven fabric has an apparent density of 0.67-0.91 g/cm3; and (5) the laminated nonwoven fabric has a thickness of 45-110 ?m.Type: GrantFiled: December 19, 2005Date of Patent: October 11, 2011Assignee: Asahi Kasei Fibers CorporationInventors: Minoru Yoshida, Ryuji Suzuka
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Publication number: 20110217894Abstract: A nonwoven fabric comprises: a first layer comprising hydrophilic spunbond fibers including a hydrophilic melt additive, the first layer forming at least one exposed outer surface of the nonwoven fabric; a second layer comprising hydrophobic spunbond fibers, the second layer forming an opposite exposed outer surface of the nonwoven fabric; and a third layer comprising meltblown fibers interposed between the first and second layers; wherein the nonwoven fabric has an absorptive capacity of at least 100%.Type: ApplicationFiled: September 1, 2010Publication date: September 8, 2011Applicant: FIRST QUALITY NONWOVENS, INC.Inventors: W. Andrew Coslett, Lynda A. Kelly, John C. Parsons
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Publication number: 20110203226Abstract: Provided is a three-ply insulating material which has combined properties to selected gases and vapors, thermal insulation, and humidity control. The device is built as a composite of three layers. The outer layer is made from breathable non woven composite. This layer is adjacent to and bonded to the middle layer, composed of high loft fibrous material with substantial weight to volume ratio, between about 2 to about 20 kg/m3. This middle layer is adjacent to a third layer of breathable non woven composite. The composite layered structure so designed forms an insulation blanket with thermal resistance of about 0.8 m2 ° K/W and moisture vapor transmission rate (MVTR) between 50 and 10000 l/m2/hr.Type: ApplicationFiled: October 27, 2009Publication date: August 25, 2011Inventor: Yael Bonneh
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Publication number: 20110187173Abstract: A cushion element for a vehicle seat or headrest comprises a non-woven layer and a fiber composite material. An insert material is arranged between the non-woven layer and the fiber composite material, and has different compression properties than the fiber composite material. The fiber composite material forms together with the insert material and the non-woven layer a one-piece material composite.Type: ApplicationFiled: July 30, 2009Publication date: August 4, 2011Applicant: Johnson Control Technology CompanyInventors: Michael Janz, Andreas Weingaertner, Werner Klusmeier
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Publication number: 20110185666Abstract: A self-adhesive permeable membrane sheet (1), for use in a building structure, includes a continuous layer of a permeable pressure sensitive adhesive (8) attached to one surface of a permeable membrane sheet (2,4,6). Methods for using the permeable membrane sheet (1) in construction are also provided.Type: ApplicationFiled: April 14, 2009Publication date: August 4, 2011Inventor: Andrew Russell
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Patent number: 7968025Abstract: The present invention relates to a method for manufacturing nonwoven and nonwoven obtainable by said method. Particularly, the invention relates to a nonwoven provided with improved tactile and absorbent characteristics, which make it suitable for use in the field of surface cleaning, personal hygiene, or formation of garments.Type: GrantFiled: July 29, 2004Date of Patent: June 28, 2011Assignee: Ahlstrom CorporationInventor: Roberto Pedoja
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Patent number: 7951732Abstract: Elastic laminates and articles for manufacture are provided. The elastic laminate can include one or more facing layers comprising one or more thermoplastic resins and one or more propylene-based polymers, and one or more inner layers comprising one or more propylene-based polymers. Each facing layer can include at least 50% by weight of the one or more propylene-based polymers where the propylene-based polymer has (i) 60 wt % or more units derived from propylene, (ii) isotactically arranged propylene derived sequences, and (iii) a heat of fusion less than 45 J/g.Type: GrantFiled: January 26, 2007Date of Patent: May 31, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Narayanaswami Raja Dharmarajan, Monica Gonzalez Correa, Vincent Bernard Benoît Ghislain Gallez
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Patent number: 7947358Abstract: A method of producing basic starting material for the manufacture of fastener tabs intended for joining the side portions of the front and rear parts of an absorbent article. The method includes stretching a first sheet of elastic material in a first direction; applying a second and third sheet of material onto respective opposite sides of the first sheet; fastening the three material sheets together in at least two mutually separated zones that extend parallel with each other in one direction perpendicular to the first direction; dividing the first sheet in each region between two zones along a line lying therebetween, whereby the first sheet contracts to a non-stretched state, and thereafter fastening the sheets together in each region between two zones. The invention also relates to an arrangement for carrying out the method, to starting material for producing fastener tabs, and to such a tab.Type: GrantFiled: December 29, 2005Date of Patent: May 24, 2011Assignee: SCA Hygiene Products ABInventor: Robert Kling
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Patent number: 7935644Abstract: A machine for producing a nonwoven feeds continuous filaments onto two surfaces that form a convergent passage. At least one of the surfaces is moving to drive the continuous filaments through the passage to form the nonwoven web. The continuous filaments have filament portions that are respectively received on the two surfaces to form spaced lateral web parts joined by a central web part formed by the continuous filament portions bridging the convergent passage. A vacuum is applied through the surfaces to assist placement of the filament portions and to direct the web as it emerges from the passage onto a horizontal take-up conveyor.Type: GrantFiled: April 8, 2009Date of Patent: May 3, 2011Assignee: Maschinenfabrik Rieter AGInventors: Frederic Noelle, Rolf Helmut Joest, Peter Anderegg
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Patent number: 7935646Abstract: Disclosed is a nonwoven web material (10) comprising thermoplastic fibers or filaments and a method of manufacture thereof. The web material has properties desirable for use on machinery having conventional heat sealing stations (26). Also, disclosed is a nonwoven infusion web material comprising thermoplastic fibers or filaments and a method of manufacture thereof. The infusion web material has properties desirable for use in making infusion packages.Type: GrantFiled: June 12, 2001Date of Patent: May 3, 2011Assignee: Ahlstrom Nonwovens LLCInventors: Helen Viazmensky, John M. Allen, Richard T. Giovannoni
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Patent number: 7919420Abstract: The invention relates to a spun-bonded nonwoven fabric made of polyolefin filaments having a titer<1.6 dtex, the spun-bonded nonwoven fabric having a basis weight?18 g/m2, a waterproofness of <15 cm measured as a water column, and an air permeability of at least 230 m3/(m2·min), wherein the product of the air permeability and the basis weight is ?5000 g/(m·min).Type: GrantFiled: March 20, 2009Date of Patent: April 5, 2011Assignee: Fiberweb Corovin GmbHInventors: Steffen Bornemann, Markus Haberer
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Patent number: 7811949Abstract: The present invention provides a method of treating a nonwoven fabric to improve alcohol repellency that includes contacting a nonwoven fabric with an aqueous treatment solution that includes a non-ionic fluoropolymer and essentially no antistatic agent or less than 0.05 weight percent by weight of an antistatic agent. The present invention also provides a nonwoven fabric with improved alcohol repellency.Type: GrantFiled: November 25, 2003Date of Patent: October 12, 2010Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Hue Scott Snowden, Michael D. Powers, Phillip Andrew Schorr
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Patent number: 7790641Abstract: The invention provides a sheet material comprising bicomponent filaments having first and second polymer components that are arranged in substantially distinct zones within the filaments, with the first polymer component formed of a relatively lower melting polymer and the second component formed of a relatively higher melting polymer. The filaments of the nonwoven fabric layer are densely arranged and compacted against one another to form smooth, substantially nonporous opposite outer surfaces, and the nonwoven fabric layer are calendered such that the lower melting sheath polymer is fused to the contacting surface portions of adjacent filaments to impart strength and coherency to the nonwoven fabric layer. The sheet material has excellent breathability and liquid barrier properties and may be useful in house wrap, medical garments, and envelope applications.Type: GrantFiled: July 27, 2006Date of Patent: September 7, 2010Assignee: Fiberweb, Inc.Inventors: John Frank Baker, Jr., Gregory W. Farell, Shannon Schoppman
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Patent number: 7786032Abstract: The present invention is generally directed to adhesive compositions comprising selected ratios of crystalline and amorphous polymers. In some versions of the invention, polymers capable of existing in different configurations (e.g., a polymer such as polypropylene which can exist in an atactic, syndiotactic. or isotactic configuration) is used to prepare adhesives of the present invention. As an example, a selected amount of isotactic polypropylene is blended with a selected amount of atactic polypropylene to prepare an adhesive composition having one or more performance properties (e.g., bond strength) that are superior to the performance properties of a conventional hot-melt adhesive.Type: GrantFiled: September 16, 2008Date of Patent: August 31, 2010Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Peiguang Zhou, Timothy James Blenke
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Publication number: 20100193428Abstract: A support for a separation membrane includes a long-fiber nonwoven fabric composed of thermoplastic continuous filaments.Type: ApplicationFiled: July 28, 2008Publication date: August 5, 2010Applicant: TORAY INDUSTRIES, INC.Inventors: Ryoichi Hane, Jun Ogihara, Hiroyuki Matsuura, Yohei Nakano, Naoki Shibusawa, Tatsuya Kajino, Yoshikazu Yakake
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Publication number: 20100178827Abstract: A roofing underlayment comprising a top layer, a bottom layer and a water-sealing composition layer positioned between the top layer and the bottom layer wherein the water-sealing composition consists essentially of at least 80 weight % of a copolymer of ethylene and at least one comonomer selected from the group consisting of alkyl acrylate, alkyl methacrylate and vinyl acetate is disclosed. The top and bottom layers independently comprise a fabric selected from the group consisting of nonwoven polypropylene, nonwoven polyethylene, nonwoven polyethylene terephthalate, woven polypropylene, woven polyethylene, spunbond polypropylene, and spunbond polyester. The roofing underlayment may optionally comprise additional layers.Type: ApplicationFiled: July 17, 2009Publication date: July 15, 2010Applicant: E.I.DU PONT DE NEMOURS AND COMPANYInventors: Hwee Tatz Thai, Han IL Lee
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Patent number: 7718558Abstract: A composite fabric for use as a roof lining material made of a multilayer base sheet of a meltblown web of bicomponent fibers sandwiched between two spunbond sheet layers of bicomponent sheath-core fibers and a spunbond top sheet of bicomponent sheath-core fibers wherein the base sheet and top sheet are joined in a manner such that the moisture vapor permeability of the composite fabric is not substantially reduced from the moisture vapor permeability of the base sheet alone.Type: GrantFiled: April 19, 2007Date of Patent: May 18, 2010Assignee: E.I. du Pont de Nemours and CompanyInventor: Jennifer Marie Galvin
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Publication number: 20100119794Abstract: The invention relates to a multi-layer composite for use in an air filter, comprising at least one upstream ply (1) and a support ply (2) that is connected to the upstream ply. The upstream ply (1) is made of a non-woven fabric and has a finer porosity than the support ply (2). The aim of the invention is to form and further develop a multi-layer composite for use in an air filter, in particular in a filter bag in such a manner that the upstream ply can be connected in a stable and economical manner to the support ply. Said invention is characterised in that the upstream ply (1) is embodied as a spun bonded non-woven, the continuous filaments (3) of which are at least partially twisted or interwoven with the support ply (2).Type: ApplicationFiled: March 13, 2008Publication date: May 13, 2010Applicant: CARL FREUDENBERG KGInventors: Heiko Manstein, Robert Groton, Anthony Hollingsworth, Ingrid Ewald
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Patent number: 7713894Abstract: A process of preparing an elastic thermally bonded nonwoven web, whereby the process is characterized by the following steps: (i) providing a thermally bonded nonwoven precursor web containing thermoplastic fibers, (ii) subjecting the precursor web of step (i) to a drawing treatment in a machine direction at a drawing rate of from 45 to 70%, and a strain rate within a range of from 1000 to 2400%/min at a temperature between the softening point and the melting point of the fibers for preparing the elastic thermally bonded nonwoven web.Type: GrantFiled: February 18, 2004Date of Patent: May 11, 2010Assignee: E.I. Dupont De Nemours and CompanyInventors: De-Sheng Tsai, Te-Hsin Tsai
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Patent number: 7687416Abstract: An arrangement for producing a fibrous mat from a heated die source wherein the produced mat includes a first layered, preselected fiber portion of substantially straight fibers produced by directing such fibers directly to a collector source and a second layered preselected fiber portion of substantially curled fibers produced by diverting and exerting an external vortically creative curling force thereon before reaching the collector source.Type: GrantFiled: May 12, 2006Date of Patent: March 30, 2010Assignee: AAF-McQuay Inc.Inventor: Kyung Choi
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Publication number: 20100066121Abstract: An improved acoustically and thermally insulating composite material suitable for use in structures such as buildings, appliances, and the interior passenger compartments and exterior components of automotive vehicles, comprising at least one airlaid fibrous layer of controlled density and composition and incorporating suitable binding agents and additives as needed to meet expectations for noise abatement, fire, and mildew resistance. Separately, an airlaid structure which provides a reduced, controlled airflow therethrough useful for acoustic insulation is provided, and which includes a woven or nonwoven scrim.Type: ApplicationFiled: March 31, 2006Publication date: March 18, 2010Inventor: James R. Gross
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Publication number: 20100062671Abstract: A wipe including at least one non-woven web layer of discontinuous fibers; and a spunbond-meltblown-spunbond web layer of continuous fibers positioned in facing and adjacently contacting relation with the at least one non-woven web layer, wherein the wipe has an opacity index of at least 1.3, where the opacity index is calculated based on the following equation: opacity index=(opacity of the wipe)/(total basis weight of the wipe).Type: ApplicationFiled: September 5, 2008Publication date: March 11, 2010Applicant: Nutek Disposables, Inc.Inventors: William Child, Robin Damaghi, Lawrence E. Duane
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Patent number: 7674733Abstract: In one embodiment, a breathable, incrementally stretched elastic composite material comprises an inner elastomeric film extrusion-laminated to an outer nonwoven web at each film surface. The inner elastomeric film has a random pattern of incremental stretch-formed macroholes therein and is substantially free of pore-forming filler. In another embodiment, a breathable, incrementally stretched elastic composite material comprises an elastomeric film extrusion-laminated to a nonwoven web at one or both of the film surfaces. The elastomeric film has a random pattern of incremental stretch-formed macroholes therein and is substantially free of pore-forming filler. Methods of manufacturing the composite materials comprise extrusion laminating and incremental stretching. Garments and disposable articles are formed at least in part from the composite material.Type: GrantFiled: March 22, 2002Date of Patent: March 9, 2010Assignee: Clopay Plastic Products Company, Inc.Inventors: Pai-Chuan Wu, Dale Eugene Robinson, Richard Arnold Bradford
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Patent number: 7655582Abstract: The present invention provides polypropylene blends for use in the production of fibers and fabrics. The polypropylene blends according to the current invention comprise from about 85 to about 95 percent by weight of a propylene homopolymer and from about 5 to about 15 percent by weight of an ethylene/propylene random copolymer having an ethylene content of about 7 percent by weight or less. The overall ethylene content of the blends according to the present invention is about 1 percent by weight or less. Polypropylene blends according to the current invention provide lower bonding temperatures and wider bonding windows without the increased smoke generation associated with high solubles homopolymers.Type: GrantFiled: May 12, 2004Date of Patent: February 2, 2010Assignee: Sunoco Chemicals, Inc.Inventors: Kimberly M. McLoughlin, Sehyun Kim
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Patent number: 7642207Abstract: The present invention is directed to a unitary absorbent core including a first fibrous absorbent layer of (a) natural fibers, synthetic fibers or a mixture thereof, (b) a binder which is a synthetic binder fiber or powder, a hydrophilic emulsion polymer binder or a mixture thereof, the fibrous absorbent layer having an upper surface and a lower surface, the lower surface in contact, optionally coextensively in contact, with an upper surface of a synthetic carrier which has a lower surface integral with a first hydrophobic vapor-transmissive moisture barrier. The present invention is also directed to a receptacle for food incorporating the unitary absorbent core. The present invention is also directed to a filter element incorporating the unitary absorbent core.Type: GrantFiled: November 8, 2002Date of Patent: January 5, 2010Assignee: Buckeye Technologies Inc.Inventors: Brian E. Boehmer, Jeffrey Scott Hurley, Kathy L. Chamness, Joshua D. Crews, John H. Roberts
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Patent number: 7642208Abstract: A composite polymeric material is provided that may be used to construct an abrasion resistant layer or sheet such as an abrasion resistant meltblown layer. Desirably, the composite polymeric material comprises blends of syndiotactic and isotactic polypropylene with ferroelectric materials. The composite polymeric material is particularly useful for constructing a filter media comprising an abrasion resistant fine fiber layer such as a nonwoven layer. The composite polymeric material of the present invention also allows for electret treatment to improve its filtration characteristics.Type: GrantFiled: December 14, 2006Date of Patent: January 5, 2010Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Jeffrey Lawrence McManus, David Grant Midkiff
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Patent number: 7625829Abstract: An elastomeric film is bonded between two or more layers of nonwoven webs formed of nonelastomeric thermoplastic fibers. The laminate has, in a predefined transverse direction, an elastic elongation value greater than the predefined elastic elongation value of the nonwoven webs, and an ultimate force to break in the predefined transverse direction of at least 3000 g/in. The laminate advantageously provides a tear resistant, multiple ply, fabric that is soft to the touch as a result of the outwardly disposed nonwoven webs, and has a high elastic modulus. The laminate is particularly useful in applications where closure portions of a product must be stretched to keep the product in place when worn.Type: GrantFiled: January 27, 2000Date of Patent: December 1, 2009Assignee: Tredegar Film Products CorporationInventors: James W. Cree, Jeffrey A. Middlesworth, Stephen D. Bruce
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Publication number: 20090291607Abstract: A method for forming a biodegradable aliphatic-aromatic copolyester suitable for use in fibers is provided. In one embodiment, for example, an aliphatic-aromatic copolyester is melt blended with an alcohol to initiate an alcoholysis reaction that results in a copolyester having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and copolymer concentrations, catalysts, temperature, etc.), a modified aliphatic-aromatic copolyester may be achieved that has a molecular weight lower than the starting aliphatic-aromatic polymer. Such lower molecular weight polymers also have the combination of a higher melt flow index and lower apparent viscosity, which is useful in a wide variety of fiber forming applications, such as in the meltblowing of nonwoven webs.Type: ApplicationFiled: July 14, 2006Publication date: November 26, 2009Inventors: James H. Wang, Aimin He
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Patent number: 7601659Abstract: The present invention relates to fabrics that can be used in the manufacture of paper. The fabrics preferably have at least three regions of fabric with specified distributions of pore sizes. The fabrics disclosed herein are an effective alternative to conventional dewatering fabrics for removing water from the incipient paper, which can provide energy cost savings in subsequent elevated temperature drying steps.Type: GrantFiled: January 11, 2006Date of Patent: October 13, 2009Assignee: E.I. du Pont de Nemours and CompanyInventors: John D. Bomberger, Karsten Keller, Glen E. Simmonds, Benjamin Fuchs
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Patent number: 7601657Abstract: An elastic laminate capable of being rolled for storage and unwound from a roll when needed for use, includes an elastic layer selected from the group consisting of an array of continuous filament strands, an array of continuous filament strands with meltblown deposited on the continuous filament strands, and a film; a gatherable facing layer bonded to only one side of the elastic layer; and either an adhesive that demonstrates a relatively short open time deposited between the elastic layer and facing layer, or such adhesive and a postbonding adhesive or nonblocking agent, or a nonblocking agent layer deposited on the elastic layer on a side opposite to the facing layer.Type: GrantFiled: December 31, 2003Date of Patent: October 13, 2009Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Peiguang Zhou, James Russell Fitts, Jr., Greg Nicholas Geiser, Gregory K. Hall, Raymond Jeffrey May, Mark Michael Mleziva, Charles John Morell, Wing-Chak Ng, Thomas Harold Roessler, Bryan James Stadelman, Howard Martin Welch, Robert David Wright
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Publication number: 20090241453Abstract: A water vapor barrier material for a building structure includes a base entangled net material and a composite nonwoven. The composite nonwoven includes a film layer with a nonwoven layer on each side of the film layer. The film layer has a water vapor transmission rate of less than 10.0 g-MIL/100-in2/day at a temperature of 100 degrees Fahrenheit and 90 percent relative humidity.Type: ApplicationFiled: March 24, 2009Publication date: October 1, 2009Inventors: Allan Marcus Dellinger, Patrick H. Giles, Steven F. Nielsen
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Patent number: 7592277Abstract: An apparatus and method in which the apparatus includes a first electrospinning device configured to electrospin first fibers of a first substance, a second electrospinning device configured to electrospin second fibers of a second substance such that first and second fibers combine in a mat formation region, and a biasing device configured to bias the first electrospinning device with a first electric polarity and to bias the second electrospinning device with a second electric polarity of opposite polarity to the first electric polarity to promote attraction and coalescence between the first and second fibers. The method electrospins under the first electric polarity first fibers from the first substance, electrospins under the second electric polarity fibers from the second substance, and coalesces the first and second fibers to form the fiber mat.Type: GrantFiled: May 17, 2005Date of Patent: September 22, 2009Assignee: Research Triangle InstituteInventors: Anthony L. Andrady, David S. Ensor, Teri A. Walker, Purva Prabhu
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Publication number: 20090203281Abstract: A method for forming a biodegradable aliphatic polyester suitable for use in fibers is provided. In one embodiment, for example, an aliphatic polyester is melt blended with an alcohol to initiate an alcoholysis reaction that results in a polyester having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and polymer concentrations, catalysts, temperature, etc.), a modified aliphatic polyester may be achieved that has a molecular weight lower than the starting aliphatic polyester Such lower molecular weight polymers also have the combination of a higher melt flow index and lower apparent viscosity, which is useful in a wide variety of fiber forming applications, such as in the meltblowing of nonwoven webs.Type: ApplicationFiled: July 14, 2006Publication date: August 13, 2009Inventors: Aimin He, James H. Wang
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Publication number: 20090156079Abstract: A nonwoven web or laminate having improved antistatic properties and alcohol repellency properties is generally provided, along with methods of making the same. The method includes forming a nonwoven web from a thermoplastic mixture of an antistatic agent and a thermoplastic polymer. A high energy treatment is applied to a surface of the nonwoven web. Then, a fluorinated agent is grafted to the surface of the spunbond web utilizing a monomer deposition process. The monomer deposition process can generally include evaporating a liquid fluorinated agent in a vacuum chamber, followed by depositing the fluorinated agent gas on a surface of the spunbond web, and exposing the surface to radiation.Type: ApplicationFiled: December 14, 2007Publication date: June 18, 2009Applicant: Kimberly-Clark Worldwide, Inc.Inventors: Ali Yahiaoui, Anthony Steve Spencer
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Publication number: 20090139637Abstract: Noise-suppressing and highly abrasion-resistant tape, preferably for wrapping elongated products such as, in particular, leads or cable looms, comprising a backing which is composed at least of three layers, specifically a first outer layer A, a second outer layer B, and an interlayer C, which is located between outer layers A and B and is firmly connected at least in sections to the outer layers A and B. The outer layer A is composed of a stitchbonded nonwoven, the outer layer B is composed of a nonwoven, and the interlayer C is composed of a film which is coated on both sides with a viscoelastic adhesive.Type: ApplicationFiled: November 26, 2008Publication date: June 4, 2009Applicant: tesa AGInventors: Patrik Kopf, Andreas Wahlers-Schmidlin, Daniel Wienke
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Patent number: 7531233Abstract: A method of producing basic starting material for the manufacture of fastener tabs (31) intended for joining the side portions of the front and rear parts of an absorbent article that includes a front part, a rear part and an intermediate crotch part, so as to give the article a pants-like configuration According to the invention the method comprises the steps of stretching a first sheet (1) of elastic material in a first direction (T); applying a second and a third sheet of material (9, 10) onto respective opposite sides of the first sheet; fastening the three material sheets together in at least two mutually separated zones (14, 15) that extend parallel with each other in one direction (M) perpendicular to said first direction; dividing the first sheet (1) in each region between two zones (14, 15) along a line that lies between said zones, wherewith the first sheet in each region (16) between two zones (14, 15) contracts to a non-stretched state, and thereafter fastening the sheets together in each regioType: GrantFiled: November 4, 2002Date of Patent: May 12, 2009Assignee: SCA Hygiene Products ABInventor: Robert Kling
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Publication number: 20090068420Abstract: Disclosed herein are nonwoven fabric composites comprising layers of spunbond and meltblown nonwoven webs. Such composites are prepared by forming or assembling the layers of the composite such that there is at least one outer layer of spunbond fibers disposed on at least one inner meltblown layer. The at least one outer layer comprises substantially parallel stripes of spunbond, continuous filament fibers with at least two different types of stripes being used. The stripes of fibers within the spunbond layer(s) are also predominately oriented in the machine direction of the nonwoven fabric composite. All layers of the fabric composites herein are bonded together via thermal, adhesive, ultra-sonic or mechanical bonding means. Such composites can be fashioned to vary the ratio of cross direction stretch to machine direction stretch.Type: ApplicationFiled: September 4, 2008Publication date: March 12, 2009Applicant: INVISTA NORTH AMERICA S.A R.L.Inventor: Peter W. Pascavage
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Publication number: 20090068419Abstract: Disclosed herein are nonwoven fabric composites comprising layers of spunbond and meltblown nonwoven webs. Such composites are prepared by forming or assembling the layers of the composite such that there are two outer layers of spunbond fibers disposed on opposite sides of eh at least one inner meltblown layer. At least one of the outer layers comprises substantially parallel lanes of spunbond, continuous filament fibers with at least two different lanes having a higher and a lower basis weight. The higher and lower basis weight lanes of fibers within the spunbond layer(s) are also predominately oriented in the machine direction of the nonwoven fabric composite. All layers of the fabric composites herein are bonded together via thermal, adhesive, ultra-sonic or mechanical bonding means. Such composites can be fashioned to vary the ratio of cross direction stretch to machine direction stretch.Type: ApplicationFiled: September 4, 2008Publication date: March 12, 2009Applicant: INVISTA NORTH AMERICA S.A.R.L.Inventor: PETER W. PASCAVAGE
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Publication number: 20090068422Abstract: Disclosed herein are nonwoven fabric composites comprising layers of spunbond and meltblown nonwoven webs. Such composites are prepared by forming or assembling the layers of the composite such that there are two outer layers of spunbond fibers disposed on opposite sides of at least one inner meltblown layer. Each of the two outer layers comprises spunbond, continuous filament fibers comprising polymeric material with certain Melt Flow Rate characteristics. Further, the fibers in each of the outer layers have been partially attenuated after extrusion from a spinneret to an average of no less than about 1.8 denier per filament. The fibers within each of the spunbond layers are also predominately oriented in the machine direction of the nonwoven fabric composite. All layers of the fabric composites herein are bonded together via thermal, adhesive or ultra-sonic bonding means. Such composites exhibit substantial cross direction stretch but only minimal stretch in the machine direction.Type: ApplicationFiled: September 4, 2008Publication date: March 12, 2009Applicant: INVISTA NORTH AMERICA S.A.R.L.Inventor: PETER W. PASCAVAGE