Hydroentangled Nonwoven Fabric Patents (Class 442/408)
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Publication number: 20110151737Abstract: Dimensionally stable nonwoven fibrous webs include a multiplicity of continuous fibers formed from one or more thermoplastic polyesters and polypropylene in an amount greater than 0% and no more than 10% by weight of the web. The webs have at least one dimension which decreases by no greater than 10% in the plane of the web when heated to a temperature above a glass transition temperature of the fibers. A spunbond process may be used to produce substantially continuous fibers that exhibit molecular orientation. A meltblown process may be used to produce discontinuous fibers that do not exhibit molecular orientation. The webs may be used as articles for filtration, sound absorption, thermal insulation, surface cleaning, cellular growth support, drug delivery, personal hygiene, medical apparel, or wound dressing.Type: ApplicationFiled: December 17, 2010Publication date: June 23, 2011Inventors: Eric M. Moore, John D. Stelter, Michael R. Berrigan, Francis E. Porbeni, Matthew T. Scholz, Sian F. Fennessey, Jay M. Jennen
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Publication number: 20110150717Abstract: A mounting mat for an exhaust gas treatment device includes a wet laid sheet of polycrystalline inorganic fibers that have been physically entangled while the wet laid sheet is still in a wet condition. The exhaust gas treatment device includes a housing, a fragile catalyst support structure resiliently mounted within the housing, and the mounting mat disposed in a gap between the housing and the fragile structure. Additionally disclosed are methods of making a mounting mat for an exhaust gas treatment device and for making an exhaust gas treatment device incorporating the mounting mat.Type: ApplicationFiled: December 15, 2010Publication date: June 23, 2011Applicant: Unifrax I LLCInventors: Amit Kumar, Thomas S. Lacki
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Publication number: 20110124258Abstract: The present invention relates to a process for the production of a hydroentangled product comprising cellulose fibers, wherein a Lyocell melt-blown web is subjected to a treatment by fine high-pressure jets of water, characterized in that the web is subjected to said fine high-pressure jets in at least three treatment steps the pressure of said high-pressure jets is 75 bar or less in each of said treatment steps. Furthermore, the invention relates to products obtainable by said products, and uses thereof.Type: ApplicationFiled: October 10, 2008Publication date: May 26, 2011Applicant: LENZING AKTIENGESELLSCHAFTInventors: Pat White, Haio Harms, Malcolm Hayhurst
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Patent number: 7947613Abstract: The present invention is directed to a low-density substrate, which has an optimized pore volume distribution. The optimized pore volume distribution allows the substrate to hold at least 50 percent of its cumulative volume within pores with a radius size of about 110 to 250 microns. The optimized pore volume distribution can also be characterized by having a dry fibrous web that absorbs less than 20 percent of the cumulative volume of the fibrous web at a pore radius of 75 microns. The optimized pore volume distribution of the substrate enables it to controllably release a fluid composition effectively onto a surface. The basis weight of the substrate is about 80 to 20 gsm and the density of the substrate is below 0.1 g/cc. The substrate may be a pre-loaded wipe, which is either moistened by a consumer prior to use or moistened prior to packaging. The composition loaded onto the substrate may contain dry and/or liquid compositions preferably for cleaning hard or soft surfaces.Type: GrantFiled: March 1, 2010Date of Patent: May 24, 2011Assignee: The Clorox CompanyInventors: William Ouellette, Nikhil Dani, Richard Suk
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Patent number: 7943538Abstract: A water-decomposable cleaning product dispersible in water, including: a cleaning part, at least a part of the cleaning part having a water-decomposable fiber-interlacing nonwoven fabric; and a holding part.Type: GrantFiled: May 12, 2006Date of Patent: May 17, 2011Assignee: Uni-Charm CorporationInventors: Takayoshi Konishi, Kazuya Okada
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Patent number: 7932192Abstract: A substrate for artificial leathers, comprising a nonwoven fabric body made of microfine fiber bundles and an elastic polymer impregnated therein. The substrate for artificial leathers simultaneously satisfies the following requirements 1 to 4: (1) each of the microfine fiber bundles contains 6 to 150 bundled microfine long fibers in average; (2) a cross-sectional area of the microfine long fibers constituting the microfine fiber bundles is 27 ?m2 or less, and 80% or more of the microfine long fibers has a cross-sectional area of from 0.9 to 25 ?m2; (3) an average cross-sectional area of the microfine fiber bundles is from 15 to 150 ?m2; and (4) on a cross section parallel to a thickness direction of the nonwoven fabric body, cross sections of the microfine fiber bundles exist in a density of from 1000 to 3000/mm2 in average.Type: GrantFiled: December 13, 2006Date of Patent: April 26, 2011Assignee: Kuraray Co., Ltd.Inventors: Michinori Fujisawa, Jiro Tanaka, Tsuyoshi Yamasaki, Norio Makiyama, Yoshiyuki Ando
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Publication number: 20110092931Abstract: Disclosed are multicomponent fibers derived from a blend of a sulfopolyester with a water non-dispersible polymer wherein the as-spun denier is less than about 6 and wherein the water dispersible sulfopolyester exhibits a melt viscosity of less than 12,000 poise measured at 240° C. at a strain rate of 1 rad/sec, and wherein the sulfopolyester comprising less than about 25 mole % of residues of at least one sulfomonomer, based on the total moles of diacid or diol residues. The multicomponent fiber is capable of being drawn at a relatively high fiber speed, particularly at least about 2000 m/min, and may be used to produce microdenier fibers. Fibrous articles may be produced from the multicomponent fibers and microdenier fibers. Also disclosed is a process for multicomponent fibers, nonwoven fabrics, and microdenier webs.Type: ApplicationFiled: December 22, 2010Publication date: April 21, 2011Applicant: EASTMAN CHEMICAL COMPANYInventors: Rakesh Kumar Gupta, Scott Ellery George, Daniel William Klosiewicz, Kab Sik Seo, Coralie McKenna Fleenor, Allen Lynn Crain
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Patent number: 7892992Abstract: Readily-fibrillable fibers of PVA polymer, having good chemical resistance, hydrophilicity, weather resistance and water resistance have a flattened cross-sectional profile and have a mean thickness D (?m) that satisfies the following formula (1): 0.4?D?5??(1) wherein D=S/L; S indicates the cross-section area (?m2) of the fibers; and L indicates the length (?m) of the major side of the cross section of the fibers. The fibers can be used for making nonwoven fabrics.Type: GrantFiled: March 10, 2004Date of Patent: February 22, 2011Assignee: Kuraray Co., Ltd.Inventors: Hideki Kamada, Tomohiro Hayakawa
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Patent number: 7858544Abstract: A hydroengorged spunmelt nonwoven formed of thermoplastic continuous fibers and a pattern of fusion bonds. The nonwoven has either a percentage bond area of less than 10 percent, or a percentage bond area of at least 10% wherein the pattern of fusion bonds is anisotropic.Type: GrantFiled: September 10, 2004Date of Patent: December 28, 2010Assignee: First Quality Nonwovens, Inc.Inventors: Mordechai Turi, Michael Kauschke
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Publication number: 20100279085Abstract: The present invention provides for a nonwoven web composite which contains at least 40% by weight of post consumer recycled materials. It has been surprisingly discovered that a nonwoven web composite of the present invention, with its fairly high post consumer recycled material content, has physical properties similar to those of a nonwoven web composite prepared from virgin materials.Type: ApplicationFiled: April 30, 2010Publication date: November 4, 2010Inventors: Gabriel Hammam Adam, Henry Skoog
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Patent number: 7820568Abstract: A leather-like sheet excellent in repulsive feeling is provided by a leather-like sheet substantially including a fibrous material which is a leather-like sheet in which a staple fiber nonwoven fabric (A) in which ultra-fine fibers of an average single fiber fineness of 0.0001 to 0.5 dtex and an average fiber length of 1 to 10 cm are entangled with each other and a woven or knitted fabric (B) including a conjugate fiber in which two or more polyesters are disposed in side-by-side or eccentric sheath-core relationship are laminated.Type: GrantFiled: August 1, 2005Date of Patent: October 26, 2010Assignee: Toray Industries, Inc.Inventors: Tomoyuki Horiguchi, Kentaro Kajiwara, Satoru Shimoyama
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Patent number: 7815887Abstract: The invention relates to a conductive nonwoven fabric that is carbonized and/or graphitized and possesses a bending rigidity <8 taber, a density of 0.1 g/m3 to 0.5 g/m3, a thickness of 80 ?m to 500 ?m, and an electrical conductivity of 10 to 300 S/cm in the nonwoven fabric strip and 30 to 220 S/cm2 perpendicular to the nonwoven fabric strip.Type: GrantFiled: August 6, 2007Date of Patent: October 19, 2010Assignee: Carl Freudenberg KGInventors: Werner Schäfer, Kurt Jörder, Hans Rettig, Karim Salama, Achim Bock, Silke Wagener, Axel Helmbold
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Patent number: 7811950Abstract: A polyester filament nonwoven ply is suitable for roofing and roof-sealing webs and has a latent shrinkage force which counteracts drafting forces which may subsequently occur as the result of stresses or during thermal processing operations. The roofing webs thus remain dimensionally stable even when exposed to heat. The shrinkage force is obtained according to the claimed process by drafting the ply accordingly in a drafting mechanism arranged after a dryer.Type: GrantFiled: October 25, 2004Date of Patent: October 12, 2010Assignee: Johns ManvilleInventors: Wolfgang Greiser, Roger Souther, Bertrand Weiter
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Patent number: 7803725Abstract: A pliable reinforcement carrier membrane for use in a coated membrane composite includes a pliable non-woven fibrous mat of entangled polymeric fibers and a hydrophobic binder. The membrane is made so that a first surface of the mat has portions of a portion of the polymeric fibers of the mat protruding therefrom in extent and in sufficient amounts to give the first surface of the mat a fuzzy characteristic to facilitate adhesion of a coating material and a second surface of the fibrous mat has a generally smooth, non-fuzzy surface. A pliable waterproof composite, including the membrane, has a bottom surface formed by a filled asphalt, modified bitumen, or non-asphaltic polymeric coating that overlies and is adhered to the first surface of the mat to provide a barrier against liquid water transmission through the composite and a top surface formed by the second surface of the mat.Type: GrantFiled: January 23, 2007Date of Patent: September 28, 2010Assignee: Johns MansvilleInventors: Stephen Richard Payne, Albert George Dietz, III
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Patent number: 7785444Abstract: The present invention provides a cylindrical suction box assembly with a suction box having two or more suction chambers that operate at different suction pressures. A lower suction pressure suction chamber is configured to provide lower suction pressure suction and is used in conjunction with the texturing process. At least one higher suction pressure suction chamber is configured to provide higher suction pressure suction and is used in conjunction with the de-watering process of the present invention. Therefore, according to the present invention two processes that are traditionally performed on two different devices are performed on a single cylindrical suction box assembly.Type: GrantFiled: August 29, 2007Date of Patent: August 31, 2010Assignee: N.R. Spuntech Industries LtdInventor: Yuval Berenstain
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Patent number: 7776772Abstract: A dispersible fibrous structure having an in-use wet tensile strength of at least about 40 g/cm; a disposable wet tensile decay of at least about 35% and a method of making the structure. The structure has at least one property selected from a group consisting of: a wet CD maximum slope of less than about 12 kg/7.62 cm, a wet CD Elongation of greater than about 50%, a low elongation CD modulus of less than about 5.0 kg/7.62 cm, and a wet CD Bending of less than about 0.05 gf cm/cm.Type: GrantFiled: November 11, 2008Date of Patent: August 17, 2010Assignee: The Procter & Gamble CompanyInventors: Steven Lee Barnholtz, James Edwin Cartledge, Jr., Ronald Thomas Gorley
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Patent number: 7745358Abstract: A nonwoven fabric having abrasion resistance and absorbency suitable for cleaning printer cylinders, especially textured or rough printer cylinders, is formed by hydroentangling a fibrous nonwoven web formed from higher-melting polyester base fibers and lower-melting binder fibers, and then thermally bonding the fabric.Type: GrantFiled: February 17, 2006Date of Patent: June 29, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Thomas Edward Benim, Jaime Marco Vara Salamero
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Patent number: 7732357Abstract: Disclosed is a fibrous nonwoven web material and a method of manufacture thereof. The fibrous nonwoven web material includes natural cellulose fibers, manmade cellulose fibers and synthetic fibers. The manmade cellulose fibers are preferably high crystallinity cellulose fibers. The fibrous nonwoven web material has appreciable wet strength yet is capable of dispersing in most aqueous environments with only mild agitation. The fibrous nonwoven web material can be wet laid from an aqueous dispersion of fibers.Type: GrantFiled: September 14, 2001Date of Patent: June 8, 2010Assignee: Ahlstrom Nonwovens LLCInventors: Vaughan R Annis, Margaret Anne McDade
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Patent number: 7718249Abstract: The invention provides a non-woven fabric comprising at least two separate but interconnected layers, each of the layers being provided with discrete interconnections so as to provide discrete voids between the two layers of fabric.Type: GrantFiled: July 9, 2004Date of Patent: May 18, 2010Assignee: Nonwovens Innovation & Research Institute LimitedInventors: Stephen J. Russell, Alireza Pourmohammadi, Ningtao Mao, Idris A. Ahmed, Manoj K. Rathod
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Publication number: 20100119795Abstract: The invention concerns a process for preparing a complex sheet comprising a layer of drylaid glass fibres and a layer of organic fibres, comprising: mechanical needling or fluid entanglement, e.g. hydroentanglement, of a nonwoven fabric of continuous organic fibres and of a veil of non-preconsolidated continuous glass fibres, the said nonwoven fabric of organic fibres and the said veil of glass fibres being juxtaposed and the said needles respectively the fluid, water jets being sent from the same side as the nonwoven fabric of organic fibres, in order to make a sheet; and then application of a binder to the bilayer. The so obtained complex fibrous structure shows a low tendency to delaminate and can be impregnated with asphalt or bitumen, and used in the field of roofing, sealing covering or membranes.Type: ApplicationFiled: January 15, 2010Publication date: May 13, 2010Applicant: SAINT-GOBAIN TECHNICAL FABRICS EUROPEInventors: Michel DROUX, Marc Berkhoff, Leonardus Lucas, Eric Daniel
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Publication number: 20100098919Abstract: The present invention is directed to a hydroentangled flame retardant nonwoven fabric, and more specifically, to a cellulosic flame retardant fabric comprising a self extinguishing fiber so as to minimize the total percentage of fabric weight lost upon burning in accordance with technical bulletin 604. Use of natural fiber fabrics in bedding components is desirable due to the softness and durability associated with the fabrics; however, natural fiber, such as cellulose, is highly flammable and therefore lacks the ability to provide the proper flammability protection often sought out in bedding components. In accordance with the present invention, a small amount of self-extinguishing fiber, such as a modacrylic fiber, was blended with the natural fiber and hydroentangled to form a nonwoven composite fabric that is soft, flame retardant, and suitable for bedding articles.Type: ApplicationFiled: November 11, 2009Publication date: April 22, 2010Applicant: POLYMER GROUP, INC.Inventors: Herbert Hartgrove, Gregory Rabon, Russell Tindall
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Patent number: 7696111Abstract: The inventive cosmetic pad (2) exhibiting an improved effectiveness thereof for make-up removal contains or consists of discontinuous synthetic micro staple fibers whose length is equal to or greater than 7 mm.Type: GrantFiled: July 21, 2006Date of Patent: April 13, 2010Assignee: Paul Hartmann AGInventors: Rainer Mangold, Angela Römpp, Jana Michelmann
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Patent number: 7690904Abstract: The invention concerns an installation for producing a nonwoven fabric comprising a spun bond lathe depositing a web of filaments on a first conveyor, the mat being consolidated on a first mobile element by entangling means. The invention is characterized in that it comprises means for passing, without any change in ratio, the mat of filaments on a first mobile element whereon the mat is consolidated by hydro-entangling means.Type: GrantFiled: October 10, 2003Date of Patent: April 6, 2010Assignee: Rieter PerfojetInventor: Frédéric Noelle
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Patent number: 7687415Abstract: An elastic composite having a high tearing strength made of an elastomeric material and a consolidated entangled web, wherein the consolidated entangled fabric has at least 2 lbs of tearing strength in the machine direction and the composite has 70-95% elastic recovery from a 100% elongation in the cross direction and greater than 50% elastic recovery from a 150% elongation in the cross direction.Type: GrantFiled: August 9, 2006Date of Patent: March 30, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: De-Sheng Tsai, Thomas Edward Benim, Marcio B. Amorosino
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Patent number: 7670971Abstract: The disclosure relates to pre-moistened webs and wipes having visible compressed sites that provide the perception of a cloth-like texture. The disclosure also relates to a nonwoven web made of non-thermoplastic fibers with at least one compressed site on the surface of the web that remains visible when the web is pre-moistened.Type: GrantFiled: December 16, 2005Date of Patent: March 2, 2010Assignee: The Procter + Gamble CompanyInventor: Jonathan Paul Brennan
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Patent number: 7655276Abstract: The present invention provides a colored reinforced article of manufacture having a substantially uniform distribution of color. The colored reinforced article of manufacture comprises a fiber-reinforced thermosetting resin matrix and a non-appertured colored veil in the thermosetting resin matrix.Type: GrantFiled: February 15, 2007Date of Patent: February 2, 2010Assignee: Precision Fabrics Group, Inc.Inventors: Richard James Bliton, Ladson Lawrence Fraser, Jr., William Oscar Phillips, Richard Landis Vockel, Jr.
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Publication number: 20100015425Abstract: The invention relates to a method for making a non-woven mat to be used as a reinforcement for a frame in a flexible sealing membrane. The method is characterised in that it includes providing vegetable-origin natural fibres optionally mixed with a minority of thermoplastic or thermofusible fibres, forming a non-woven mat or web by mechanical, pneumatic or hydraulic batting, submitting the web to two successive consolidation operations including a needle punching operation and a binding operation with a chemical binder or by a thermal processing preferably under pressure, and finally submitting the non-woven consolidated web to a process for the hydrophobation of the fibres.Type: ApplicationFiled: February 13, 2008Publication date: January 21, 2010Applicant: SOPREMAInventors: Pierre-Etienne Bindschedler, Marie Valentin, Remi Perrin
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Publication number: 20100015875Abstract: The invention relates to a method for the production of a one-layered or multilayered nonwoven fabric, a machine for the production of such a nonwoven fabric, and a correspondingly produced nonwoven fabric. The task of improving such a method and a production apparatus underlies the invention to the effect that projecting loops and fibrils no longer stick out, and thus individual filaments can be prevented from pulling out during the use of the nonwoven fabric. According to the invention, this is achieved in that the nonwoven fabric is smoothed after water needling by the use of a calendar. The machine according to the invention is characterized by the fact that the machine has a spun bonded fabric, at least one subsequent needling device, a dryer connected thereto, and thereafter at least one calendar.Type: ApplicationFiled: December 13, 2007Publication date: January 21, 2010Applicant: Fleissner GmbHInventor: Ullrich Muenstermann
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Patent number: 7638446Abstract: The present invention is directed to a hydroentangled flame retardant nonwoven fabric, and more specifically, to a cellulosic flame retardant fabric comprising a self extinguishing fiber so as to minimize the total percentage of fabric weight lost upon burning in accordance with technical bulletin 604. Use of natural fiber fabrics in bedding components is desirable due to the softness and durability associated with the fabrics; however, natural fiber, such as cellulose, is highly flammable and therefore lacks the ability to provide the proper flammability protection often sought out in bedding components. In accordance with the present invention, a small amount of self-extinguishing fiber, such as a modacrylic fiber, was blended with the natural fiber and hydroentangled to form a nonwoven composite fabric that is soft, flame retardant, and suitable for bedding articles.Type: GrantFiled: February 8, 2005Date of Patent: December 29, 2009Assignee: Polymer Group, Inc.Inventors: Herbert Hartgrove, Gregory Rabon, Russell Tindall
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Patent number: 7611594Abstract: An absorbent wiping cloth can be made by hydraulic bonding of hydrophilic fibers with a prebonded spunbond filament layer. A further spunbond filament layer can be provided on the fiber side of this laminate.Type: GrantFiled: March 24, 2004Date of Patent: November 3, 2009Assignee: Reifenhauser GmbH & Co. MaschinenfabrikInventors: Sebastian Sommer, Jens Güdden
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Patent number: 7605097Abstract: A unitary, fiber-containing composite comprises (a) a first region comprising a plurality of first binder fibers and a plurality of bast fibers, (b) a second region disposed above the first region, the second region comprising a plurality of second binder fibers and a plurality of bast fibers, and (c) a transitional region disposed between the first region and the second region. The transitional region comprises concentrations of the first binder fiber, the second binder fiber, and the bast fiber. The concentration of the first binder fiber in the first transitional region is greatest proximate to the first region and least proximate to the second region, and the concentration of the second binder fiber and the bast fiber in the first transitional region is greatest proximate to the second region and least proximate to the first region. A method for producing a unitary, fiber-containing composite is also described.Type: GrantFiled: May 26, 2006Date of Patent: October 20, 2009Assignee: Milliken & CompanyInventors: Gregory J. Thompson, Jessica Ann Qinghong, Sterling R. Mensch, David E. Wenstrup, Shah N. Huda
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Publication number: 20090257830Abstract: A foundation wall vapor barrier system comprising a wall vapor barrier extending vertically along an interior portion of a foundation wall to resist moisture transfer through the foundation wall. The wall vapor barrier includes a non-woven fibrous core layer, a moisture impervious solid top layer bonded to and completely covering a first side of the core layer, a moisture impervious solid bottom layer bonded to a second side of the core layer opposite the first side, and, an adhesion strip defined by an absence of the bottom layer along a portion of the second side exposing the core layer for receiving adhesive to secure the wall vapor barrier to the foundation wall. A fire retardant low-VOC compliant non-solvent adhesive is disposed in the adhesion strip mounting the core layer to the foundation wall without mechanical fasteners.Type: ApplicationFiled: April 9, 2009Publication date: October 15, 2009Inventor: H.B Marshall, III
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Patent number: 7523531Abstract: The invention relates to a fabric for a machine for producing and/or further processing a material web, in particular a fibrous web, having a carrier structure and a fiber batt, the fiber batt comprising fibers which, in order to form elongated fiber segments, can be split substantially along their longitudinal extent, at least in some sections, and/or which are split substantially along their longitudinal extent, at least in some sections, forming elongated fiber segments. Furthermore, the invention relates to a process for producing the fabric and to a method for conditioning the fabric in the machine for producing the material web.Type: GrantFiled: May 9, 2006Date of Patent: April 28, 2009Assignee: Voith Patent GmbHInventors: Matthias Schmitt, Hubert Walkenhaus
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Patent number: 7485592Abstract: This invention relates to a bag filter having a tubular section, one closed end and one open end, the tubular section having a nonwoven felt comprising an intimate fiber blend of 50 to 80 parts by weight polyphenylene sulfide fiber and 20 to 50 parts by weight acrylic fiber, based on the total weight of polyphenylene sulfide and acrylic fibers in the felt, wherein the acrylic fiber has an equal or lower denier per filament than the polyphenylene sulfide fiber.Type: GrantFiled: September 13, 2006Date of Patent: February 3, 2009Assignee: E.I. du Pont de Nemours and CompanyInventors: Anil Kohli, Herman Hans Forsten, Kurt Hans Wyss
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Patent number: 7485589Abstract: The present invention is directed to an essentially binder free cleaning and/or sanitizing nonwoven article including a cationic fibrous component for cleaning a surface, to be utilized with a sanitizing solution without depleting the solution's effectiveness. The cationic cleaning or sanitizing article of the present invention is particularly engineered to be stored in a quaternary amine sanitizing solution over an extended period of time while maintaining at least the minimum required FDA ppm of the sanitizing solution.Type: GrantFiled: August 2, 2005Date of Patent: February 3, 2009Assignee: PGI Polymer, Inc.Inventor: Dianne Ellis
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Patent number: 7476631Abstract: A dispersible fibrous structure having an in-use wet tensile strength of at least about 40 g/cm; a disposable wet tensile decay of at least about 35% and a method of making the structure. The structure has at least one property selected from a group consisting of: a wet CD maximum slope of less than about 12 kg/7.62 cm, a wet CD Elongation of greater than about 50%, a low elongation CD modulus of less than about 5.0 kg/7.62 cm, and a wet CD Bending of less than about 0.05 gf cm/cm.Type: GrantFiled: April 3, 2003Date of Patent: January 13, 2009Assignee: The Procter & Gamble CompanyInventors: Steven Lee Barnholtz, James Edwin Cartledge, Jr., Ronald Thomas Gorley
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Patent number: 7470639Abstract: Nonwoven fabric laminates suitable for use as semipermeable membrane supports are produced by forming a spunbond nonwoven fabric first layer of continuous thermoplastic polymer filaments; forming a wet-laid nonwoven fabric second layer of discrete length thermoplastic polymer fibers; and bonding the first and second layers in opposing face-to-face relationship to form a composite support, where the first and second layers define first and second outer surfaces of the composite support. The resulting semipermeable membrane supports provide an advantageous balance of properties, including smoothness, porosity, interlaminar adhesion, and flux properties.Type: GrantFiled: March 7, 2006Date of Patent: December 30, 2008Assignee: Fiberweb, Inc.Inventors: Peter J. Angelini, Clement J. Haley
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Patent number: 7456120Abstract: This invention relates to a bag filter having a tubular section, one closed end and one open end, the tubular section having a nonwoven felt comprising an intimate fiber blend of 50 to 80 parts by weight meta-aramid fiber and 20 to 50 parts by weight acrylic fiber, based on the total weight of meta-aramid and acrylic fibers in the felt, wherein the acrylic fiber has an equal or lower denier per filament than the meta-aramid fiber.Type: GrantFiled: September 13, 2006Date of Patent: November 25, 2008Assignee: E. I. du Pont de Nemours and CompanyInventors: Anil Kohli, Herman Hans Forsten, Kurt Hans Wyss
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Patent number: 7452835Abstract: A nonwoven blanket embodying the principles of the present invention includes at least two layers, wherein a first layer comprises a spunlace fabric that exhibits one or more raised regions within the fabric. The blanket of the present invention also includes a second durable and protective layer comprising one or more layers of spunmelt fabrics, typically referred to as spunbond and meltblown fabrics. The two layers are mechanically bonded via one or more methods known in the art so as to form at least one or more insulative air pockets within the blanket.Type: GrantFiled: January 19, 2006Date of Patent: November 18, 2008Assignee: PGI Polymer, Inc.Inventor: Cliff Bridges
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Patent number: 7432219Abstract: An improved hydroentangled well integrated composite nonwoven material, including a mixture of continuous filaments, synthetic staple fibers, and natural fibers which has a reduced twosidedness and an improved textile feeling. The synthetic staple fibers should have a length of 3 to 7 mm, and preferably there should be no thermal bondings between the filaments. The method of producing such a nonwoven material is also disclosed. The nonwoven includes a mixture of 10-50 w-% continuous filaments preferably chosen from polypropylene, polyesters and polylactides, 5-50 w-% synthetic staple fibers chosen from polyethylene, polypropylene, polyesters, polyamides, polylactides, rayon, and lyocell, and 20-85 w-% natural fibers, preferably pulp.Type: GrantFiled: November 1, 2004Date of Patent: October 7, 2008Assignee: SCA Hygiene Products ABInventors: Mikael Strandqvist, Anders Stralin, Lars Fingal, Hannu Ahoniemi
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Patent number: 7417000Abstract: The present invention relates to a pre-moistened wipe for treating a surface, said pre-moistened wipe comprising: (a) a substrate; wherein said substrate is substantially free of a binder or latex material and said; and (b) a composition applied to said substrate, said composition having (i) a pH of about 7 or less and comprising (ii) at least about one surfactant; and (iii) a polymeric biguanide.Type: GrantFiled: September 23, 2004Date of Patent: August 26, 2008Assignee: The Procter & Gamle CompanyInventors: Mary Vijayarani Barnabas, Alan Edward Sherry, Ann Margaret Wolff
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Publication number: 20080166938Abstract: A nonwoven felt formed from fluoropolymer film, which is split and fibrillated to form a network structure, and then entangled.Type: ApplicationFiled: January 6, 2008Publication date: July 10, 2008Applicant: TEADIT INDUSTRIA E COMERCIO LTDA.Inventors: Marcello Cattaneo ADORNO, Jose Antonio de Almeida NETO
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Patent number: 7381669Abstract: A filter media formed in accordance with the present invention comprises hydroentangled, predominantly polyester staple length fibers having a basis weight of no more than about 12 oz/yd2. The filter media exhibits a Mullen burst strength of at least about 395 psi, and machine-direction and cross-direction shrinkage of less than about 3%, preferably less than about 2% . The filter media exhibits a machine-direction tensile strength of at least about 105 lb/in, and a cross-direction tensile strength of at least about 110 lb/in.Type: GrantFiled: January 9, 2006Date of Patent: June 3, 2008Assignee: Polymer Group, Inc.Inventors: Charles Eric Pearce, Sergio DeLeon, Michael Putnam, Cheryl Carlson, Ping Hao
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Patent number: 7381668Abstract: The present invention is directed to a hydroentangled nonwoven fabric with improved flame retardant properties and the making thereof, whereby the nonwoven fabric is differentially entangled to collapse upon itself and self-extinguish upon burning. The self-extinguishing fabric further exhibits favorable tactile and ductile softness while obtaining sufficient physical strength.Type: GrantFiled: May 4, 2005Date of Patent: June 3, 2008Assignee: Polymer Group, Inc.Inventors: Nick Carter, Jennifer Mayhorn
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Patent number: 7381667Abstract: A non-woven hydroentangled textile is described formed in cross-section with a central area of low mass fiber density surrounded on both sides by areas of higher mass density. Further, a personal cleansing article is described wherein the hydroentangled textile is associated with a personal cleansing composition that includes a lathering surfactant. The composition is deposited onto, impregnated into or at least is partially enclosed by the textile. Also described is a process for producing the textile involving feeding into a hydroentangling unit a loose random assembly of fibers both above and below a fibrous screen modifying textile substrate.Type: GrantFiled: August 21, 2003Date of Patent: June 3, 2008Assignee: Unilever Home & Personal care USA, division of Conopco, Inc.Inventors: Paul Roland Bergquist, Shauna Mary Lagatol, Jesus Antonio Urbaez, David Robert Williams, Gregory Aaron Grissett, Filomena Augusta Macedo
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Publication number: 20080102725Abstract: A multi-layered nonwoven having a printed layer comprises a pair of outer layers, with each of the outer layers comprising a carded web. An inner layer is disposed between the outer layers and includes printed indicia, which may be in the form of text, graphics, colors, or other suitable indicia. The inner layer is bonded to each of the outer layers by hydroentanglement. A method of making such a nonwoven may include the steps of providing a pair of outer layers comprising carded webs, providing a pulp inner layer having printed indicia, positioning the inner layer between the outer layers, passing the outer layers and the inner layer together through a hydroentangling system to secure the inner layer to each of the outer layers to form a web, and drying the web.Type: ApplicationFiled: November 1, 2006Publication date: May 1, 2008Inventors: Martin Patrick Lacey, Michael Sean Pratt, Michael Jan Trinkaus, Philip Andrew Sawin
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Publication number: 20080038978Abstract: An elastic composite having a high tearing strength made of an elastomeric material and a consolidated entangled web, wherein the consolidated entangled fabric has at least 2 lbs of tearing strength in the machine direction and the composite has 70-95% elastic recovery from a 100% elongation in the cross direction and greater than 50% elastic recovery from a 150% elongation in the cross direction.Type: ApplicationFiled: August 9, 2006Publication date: February 14, 2008Inventors: De-Sheng Tsai, Thomas Edward Benim, Marcio B. Amorosino
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Patent number: 7326664Abstract: A flame retardant bedding article comprises a hydroentangled flame retardant nonwoven component, and more specifically, a bedding article such as a mattress, pillow cover or mattress pad, comprising a structurally stable, flame retardant nonwoven component. The component comprises at least two layers that have a synergistic relationship so as to maintain the structural integrity of the bedding article upon burning.Type: GrantFiled: March 5, 2004Date of Patent: February 5, 2008Assignee: PolymerGroup, Inc.Inventors: Herbert Hartgrove, Gregory Rabon, Russell Tindall
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Publication number: 20080010795Abstract: The present invention provides a nonwoven fabric of which at least one of fiber orientation, fiber density, and basis weight is adjusted, and in which at least one of a predetermined groove portion, an opening, and a protrusion is formed, a manufacturing method for the nonwoven fabric, and a nonwoven fabric manufacturing apparatus. The nonwoven fabric manufacturing apparatus of the present invention manufactures a nonwoven fabric of which at least one of fiber orientation, fiber density, and basis weight is adjusted, or in which at least one of a predetermined groove portion, an opening, and a protrusion is formed by blowing fluid mainly containing gas onto a fiber web which is formed in a sheet shape, and which is in a state where at least a portion of the fibers constituting the fiber aggregate has a degree of freedom.Type: ApplicationFiled: June 19, 2007Publication date: January 17, 2008Applicant: UNI-CHARM CORPORATIONInventors: Satoshi Mizutani, Yuki Noda, Hideyuki Ishikawa, Akihiro Kimura
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Patent number: 7285240Abstract: A method of imaging a woven textile fabric comprises the steps of providing a woven textile fabric having a plurality of interwoven warp and weft yarns comprising aesthetically contrasting fibrous components. A three-dimensional image transfer device is provided with the woven textile fabric positioned thereon, and subjected to hydraulic imaging by application of pressurized liquid streams. The liquid streams are applied to a surface of the fabric facing away from the image transfer device, to thereby impart the pattern of the image-forming surface of the three-dimensional transfer device to the fabric. The resultant fabric can find application as an apparel article, a home fashion article, or an upholstery backing.Type: GrantFiled: September 30, 2002Date of Patent: October 23, 2007Assignee: Polymer Group, Inc.Inventors: Dennis Clark Scheer, Cynthia Dawson McNaull