Containing At Least Two Chemically Different Strand Or Fiber Materials Patents (Class 442/415)
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Publication number: 20120219756Abstract: A semipermeable membrane supporting material formed of a non-woven fabric comprising two or more main synthetic fibers having different fiber diameters and a binder synthetic fiber and having a semipermeable membrane application surface and a non-application surface having a semipermeable membrane application surface:non-application surface smoothness ratio of from 5.0:1.0 to 1.1:1.0, a semipermeable membrane supporting material formed of a non-woven fabric comprising a main synthetic fiber and a binder synthetic fiber, having an average breaking length of less than 4.0 km in the machine direction (MD) and the cross direction (CD) at an elongation by 5% and having a dimensional change ratio, measured under heat in the cross direction (CD), of ?0.3 to +1.0%, a spiral-type semipermeable membrane element including the above semipermeable membrane supporting material, and a process for producing a semipermeable membrane supporting material.Type: ApplicationFiled: October 18, 2010Publication date: August 30, 2012Inventors: Mitsuo Yoshida, Kazuhiko Takayama, Kaoru Kimura, Tsunekatsu Takeuchi, Hitoshi Fujiki, Motomichi Fukuda
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Patent number: 8183167Abstract: Substrates that exhibit antimicrobial and/or antifungal characteristics that persist through the useful life of the substrate, and more particularly textile substrates infused with or covalently bound to well-dispersed antimicrobial nanoparticles, such as silver and/or copper nanoparticles, which exhibit persistent and demonstrable bacteriocidal, bacteriostatic, fungicidal, fungistatic behavior through numerous wash cycles. Methods of manufacturing such substrates are also provided.Type: GrantFiled: January 18, 2008Date of Patent: May 22, 2012Assignee: NanoHorizons, Inc.Inventors: James L. Delattre, Daniel J. Hayes, Joseph Cuiffi, Matthew Henry, James Kundrat, Paul Carrigan
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Patent number: 8178199Abstract: A water non-dispersible polymer microfiber is provided comprising at least one water non-dispersible polymer wherein the water non-dispersible polymer microfiber has an equivalent diameter of less than 5 microns and length of less than 25 millimeters. A process for producing water non-dispersible polymer microfibers is also provided, the process comprising: a) cutting a multicomponent fiber into cut multicomponent fibers; b) contacting a fiber-containing feedstock with water to produce a fiber mix slurry; wherein the fiber-containing feedstock comprises cut multicomponent fibers; c) heating the fiber mix slurry to produce a heated fiber mix slurry; d) optionally, mixing the fiber mix slurry in a shearing zone; e) removing at least a portion of the sulfopolyester from the multicomponent fiber to produce a slurry mixture comprising a sulfopolyester dispersion and water non-dispersible polymer microfibers; and f) separating the water non-dispersible polymer microfibers from the slurry mixture.Type: GrantFiled: March 22, 2011Date of Patent: May 15, 2012Assignee: Eastman Chemical CompanyInventors: Rakesh Kumar Gupta, Melvin Glenn Mitchell, Daniel William Klosiewicz
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Patent number: 8168003Abstract: The present invention relates to a fiber having starch and a surfactant, and a web employing such a fiber.Type: GrantFiled: March 31, 2011Date of Patent: May 1, 2012Assignee: The Procter & Gamble CompanyInventors: Valerie Ann Bailey, Larry Neil Mackey, Paul Dennis Trokhan
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Patent number: 8114794Abstract: The invention relates to a nonwoven fabric which is bonded at selected points by use of a binder containing particles composed of filler material (a phase change material, among others) and which is not bonded at other selected points. The nonwoven fabric is characterized by a soft touch and good flexibility, and may be used as an interlining material or an intermediate layer.Type: GrantFiled: April 28, 2006Date of Patent: February 14, 2012Assignee: Carl Freudenberg KGInventors: Peter Grynaeus, Hans Rettig, Oliver Staudenmayer
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Patent number: 8080489Abstract: 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: January 11, 2010Date of Patent: December 20, 2011Assignee: The Procter & Gamble CompanyInventor: Jonathan Paul Brennan
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Patent number: 8071491Abstract: A laminated composite material is provided. The material has first and second layers. The first layer is composed of a fibrous material and a binder, and the second layer is composed of a woven material and a binder.Type: GrantFiled: November 4, 2002Date of Patent: December 6, 2011Assignee: FledForm Technologies, LLCInventors: Garry E. Balthes, Darrel R. Eggers
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Patent number: 8069629Abstract: A siding panel assembly includes an ornamental facing and a first insulation layer made from fibrous insulating material. That fibrous insulating material includes polymer fibers and glass fibers, polymer fibers, natural fibers and mixtures thereof. A method for making the siding panel assembly includes the steps of cutting a groove in and molding a first surface of a sheet of the insulation layer to match in profile a concavity in the ornamental facing and assembling the insulation layer and the ornamental facing.Type: GrantFiled: August 6, 2009Date of Patent: December 6, 2011Assignee: CertainTeed CorporationInventors: Anthony L. Rockwell, W. David Graham, Donn R. Vermilion, Kaushik Chakrabarty
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Publication number: 20110287681Abstract: A textile and a dye manufactured from fibers that are derived from tobacco plants and a process for making the textile and dye from the tobacco plants. In a preferred embodiment, the tobacco is organically grown and the entire tobacco plant, including stem and leaves, is utilized to produce the tobacco plant fiber used for making a textile and a natural dye utilized to color the textile or other textiles. One or more secondary material fibers can be mixed with the tobacco plant fiber to produce the textile. The process percolates a hot liquid solution onto tobacco plant material to cause a chemical reaction with the tobacco plant material to produce the tobacco plant fiber. Preferably, the process is a closed-loop system that minimizes the impact on the environment and utilizes less material, fuel and other resources. The dye does not require a mordant to bind with the textile.Type: ApplicationFiled: May 19, 2010Publication date: November 24, 2011Inventor: Suzanne M. DeVall
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Patent number: 8033400Abstract: The invention concerns the production of filter materials for the purification and disinfection of water, water solutions and other liquids, as well as for sterilizing filtration of injections and other solutions, for concentration of biomolecules in physiological liquids, concentration and extraction of viruses, preparation of apyrogenic water, in biocatalytic diaphragm reactors. The invention solves the problems of a new filter material production, characterized by high sorption properties, high retention efficiency of submicron electronegative particles, microorganisms, submicron non-polar particles and chemical contaminations, and, at the same time, characterized by low hydrodynamic resistance. A base of filter material is the nonwoven organic synthetic polymeric fabric, modified by the aluminum hydroxide particles, fixed to the surface of base fibers for improvement of its sorption properties and for making it positively charged.Type: GrantFiled: February 4, 2008Date of Patent: October 11, 2011Assignee: Advanced Powder Technologies, LLCInventors: Marat Izrailievich Lerner, Gennady Evgenievich Rudenskiy, Sergey Grigorievich Psakhie, Natalia Valentinovna Svarovskaya, Vladimir Evgenievich Repin, Vladimir Georgievich Pugachev
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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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Patent number: 8030231Abstract: The present invention relates to an absorbent personal care and/or cleansing product for cosmetic and/or dermatological applications comprising at least one non-woven absorbent sheet comprising 10 to 100 wt. % lyocell fibers and 0 to 90 wt. % of at least one other natural, man-made natural and/or synthetic fiber, wherein the lyocell fiber has a fiber titer in the range from 0.5 to 3.5 dtex, wherein the absorbent sheet has a basis weight in the range from 20 to 500 g/m2, and a tensile strength in the range from 5 to 1000 N/5 cm in machine direction and in cross direction.Type: GrantFiled: July 7, 2005Date of Patent: October 4, 2011Assignee: Johnson & Johnson GmbHInventors: Rainer Lange, Pietro Rosato, Astrid Wersuhn
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Publication number: 20110232243Abstract: Non-woven mat including magnesium aluminum silicate glass fibers and amorphous refractory ceramic fibers, bio-soluble ceramic fibers, and/or heat-treated silica fibers. Embodiments of the nonwoven mat surprisingly have a Resiliency Value after three thermal cycles from 25° C. to 700° C./400° C. of the Real Condition Fixture Test at least 1.1 times greater than the Resiliency Value of a comparable non-woven mat consisting of any individual type of fibers of the non-woven mat. The non-woven mats are useful, for example, in pollution control devices and other thermal insulation applications.Type: ApplicationFiled: October 27, 2009Publication date: September 29, 2011Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Anne N. De Rovere, Lahoussaine Lalouch, Richard P. Merry
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Publication number: 20110230111Abstract: Polymer fibers having therein at least one infrared attenuating agent is provided. The infrared attenuating agent is at least substantially evenly distributed throughout the polymeric material forming the polymer fibers. In exemplary embodiments, the infrared attenuating agents have a thickness in at least one dimension of less than about 100 nanometers. Alternatively, the polymer fibers are bicomponent fibers formed of a core and a sheath substantially surrounding the core and the infrared attenuating agent is at least substantially evenly distributed throughout the sheath. The modified polymer fibers may be used to form insulation products that utilize less polymer material and subsequently reduce manufacturing costs. The insulation products formed with the modified polymers have improved thermal properties compared to insulation products formed of only non-modified polymer fibers. Additionally, the insulation product is compatible with bio-based binders.Type: ApplicationFiled: March 19, 2010Publication date: September 22, 2011Inventors: Charles R. Weir, Harry A. Alter, Yadollah Delaviz, Jeffrey A. Tilton
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Patent number: 8021995Abstract: A fiber mixture according to the invention comprises fibers A comprising a polymer A containing a thermoplastic polyurethane elastomer and fibers B comprising a thermoplastic polymer B other than the thermoplastic polyurethane elastomer, said thermoplastic polyurethane elastomer having a starting temperature for solidifying of 65° C. or above as measured by a differential scanning calorimeter (DSC) and containing 3.00×106 or less polar-solvent-insoluble particles per g counted on a particle size distribution analyzer, which is based on an electrical sensing zone method, equipped with an aperture tube having an orifice of 100 ?m in diameter. An elastic nonwoven fabric comprises the fiber mixture.Type: GrantFiled: January 23, 2004Date of Patent: September 20, 2011Assignee: Mitsui Chemicals, Inc.Inventors: Kenichi Suzuki, Shigeyuki Motomura, Satoshi Yamasaki, Daisuke Nishiguchi, Hisashi Kawanabe
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Patent number: 8021997Abstract: A multicomponent spunbonded nonwoven is provided which is composed of at least two polymers which form interfaces toward one another, which are produced by at least one spinning machine having uniform spinning nozzle apertures, and which are hydrodynamically drawn, lapped in a sheet-like manner, and bonded, the multicomponent spunbonded nonwoven being composed of different filaments which contain at least two polymers, or it being composed of a mixture of multicomponent filaments and monocomponent filaments which each contain only one of the polymers, the multicomponent filament being composed of at least two elementary filaments and the titer of the individual filaments varying by the number of elementary filaments contained in the filaments.Type: GrantFiled: July 20, 2005Date of Patent: September 20, 2011Assignee: Carl Freudenberg KGInventors: Robert Groten, Ulrich Jahn, Georges Riboulet
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Patent number: 8017535Abstract: Densified non-woven materials having acoustic and thermal properties are provided. The non-woven material is formed of a thermoplastic material or fibers and a thermoplastic material. The fibers may be an organic, inorganic, or thermoplastic fiber and are desirably devoid of conventional sizing compositions. The densified portion of the non-woven material is formed by applying a moisture additive and subsequently applying heat. Heating the non-woven material causes the water in the moisture additive to turn to steam, which causes a molecular change in the polymer based thermoplastic material(s) of the non-woven material that was treated with the moisture additive. The moisture additive is preferably water, but may include a dilute alkali, a dilute acid, or additives to enhance surface, fire, or mold release characteristics. The water additive may be utilized to surface treat, partially treat, or completely treat the air-laid mat to achieve desired acoustic or thermal properties and/or stiffness.Type: GrantFiled: December 14, 2006Date of Patent: September 13, 2011Assignee: Owens Corning Intellectual Capital, LLCInventor: Anthony L. Rockwell
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Patent number: 7998890Abstract: Provided herein is a non-stratified, or homogeneous, non-woven composite having (a) strength-imparting fibers of a relatively high denier and (b) binder fibers of a lower denier that adhere the composite together and that form a smooth, stiff skin on the outer surfaces of the composite. In one instance, the strength-imparting fibers are staple fibers and the binder fibers are bicomponent fibers having a low melt component. In a variation, the composite also contains a small percentage by weight (that is, less than 20%) of flame retardant fibers that impart flame resistant properties to the composite. Preferably, all of the fibers are comprised of the same polymeric material (e.g., polyester), so that the composite is recyclable. The resulting composite exhibits excellent flame retardance, strength, and stiffness, as well as having a smooth surface for attachment of a decorative fabric or other material. A process for manufacturing such composites is also provided.Type: GrantFiled: January 14, 2011Date of Patent: August 16, 2011Assignee: Milliken & CompanyInventor: LeAnne O. Flack
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Patent number: 7994080Abstract: An electrically conductive non-woven fabric (10) for heating applications is described and comprises a three-dimensional network (11) of non-woven synthetic fibers (12) which are non-electrically conductive and electrically conductive strands (13) of synthetic fibers or fine metal wires consolidated therewith. The fabric has an intrinsic resistivity in the range of from about 0.05 to 5 m2/kg.Type: GrantFiled: March 22, 2006Date of Patent: August 9, 2011Assignee: Soleno Textiles Techniques Inc.Inventors: Richard Théorêt, Olivier Vermeersch
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Patent number: 7994081Abstract: A nonwoven fabric is provided having a plurality of semi-crystalline filaments that are thermally bonded to each other and are formed of the same polymer and exhibit substantially the same melting temperature. The fabric is produced by melt spinning an amorphous crystallizable polymer to form two components having different levels of crystallinity. During spinning, a first component of the polymer is exposed to conditions that result in stress-induced crystallization such that the first polymer component is in a semi-crystalline state and serves as the matrix or strength component of the fabric. The second polymer component is not subjected to stress induced crystallization and thus remains in a substantially amorphous state which bonds well at relatively low temperatures. In a bonding step, the fabric is heated to soften and fuse the binder component. Under these conditions, the binder component undergoes thermal crystallization so that in the final product, both polymer components are semi-crystalline.Type: GrantFiled: August 14, 2008Date of Patent: August 9, 2011Assignee: Fiberweb, Inc.Inventors: Gregory W. Farell, Edward Keith Willis
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Patent number: 7981822Abstract: The instant invention is a hook and loop fastener device. According to the instant invention, the hook and loop fastener device includes a loop component. The loop component includes a binder-free non-woven material having a bottom layer and a top layer. The bottom layer includes a first bicomponent fiber and a first monocomponent fiber. The first bicomponent fiber comprises the majority of the bottom layer based on total weight of the bottom layer, and the first monocomponent fiber comprises the balance thereof. The top layer includes a second bicomponent fiber, and a second monocomponent fiber. The second monocomponent fiber comprises the majority of the top layer based on total weight of the top layer, and the second bicomponent layer comprises the balance thereof. The bottom layer and the top layer may further include interfiber bonding to form the binder-free non-woven material.Type: GrantFiled: July 11, 2005Date of Patent: July 19, 2011Assignee: Aplix S.A.Inventors: Donald H. Lester, Jr., David L. Lunceford
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Patent number: 7977260Abstract: The present invention provides a separator for an electric double layer capacitor comprising a porous sheet containing fibrillated heat-resistant fibers, polyester fibers having a fineness of 0.01 dtex to less than 0.10 dtex, and fibrillated cellulose, which is suitable for use as a separator for an electric double layer capacitor operating at high voltages of 3 V or more.Type: GrantFiled: November 28, 2006Date of Patent: July 12, 2011Assignee: Mitsubishi Paper Mills LimitedInventors: Takahiro Tsukuda, Masatoshi Midorikawa, Tomohiro Sato
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Patent number: 7972986Abstract: Fibrous structures that exhibit a pore volume distribution such that greater than about 40% of the total pore volume present in the fibrous structure exists in pores of radii of from about 121 ?m to about 200 ?m, and methods for making such fibrous structures are provided.Type: GrantFiled: July 10, 2008Date of Patent: July 5, 2011Assignee: The Procter & Gamble CompanyInventors: Steven Lee Barnholtz, Paul Dennis Trokhan, Michael Donald Suer
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Publication number: 20110151738Abstract: 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. In some embodiments, the fibers comprise a viscosity modifier and/or an anionic surfactant. 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, Kevin D. Landgrebe, Korey W. Karls, Sian F. Fennessey, Jay M. Jennen
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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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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: 7938908Abstract: The present invention relates to a fiber including unmodified and/or modified starch and a crosslinking agent, and a web employing such a fiber.Type: GrantFiled: January 5, 2010Date of Patent: May 10, 2011Assignee: The Procter & Gamble CompanyInventors: Valerie Ann Bailey, Larry Neil Mackey, Paul Dennis Trokhan
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Patent number: 7932193Abstract: Coated fibrous mats having properties particularly suited for a facer on gypsum wallboard, foam and other substrates and in laminates of various types, and the method of making the coated mat is disclosed. The mat contains a major portion of non-cellulosic fibers and a minor portion of cured resinous binder. The exposed surface coating has a smoothness of no more than about 15 microns and is comprised of one or more of a clay, a filler and a polymeric binder. The method comprises at least partially drying the coated mat while the exposed surface of the coating is in contact with a smooth surface.Type: GrantFiled: February 17, 2004Date of Patent: April 26, 2011Assignee: Johns ManvilleInventor: Richard Emil Kajander
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Publication number: 20110070794Abstract: A nonwoven sheet material and method of construction thereof is provided. The nonwoven sheet material includes a heat bondable textile material and a used post consumer material. The used post consumer material includes at least one of a non-thermoplastic material, thermoplastic material, a plastic composition including different types of plastic constituents, and other materials containing contaminants such as dirt, oil, grease and the like in a non-washed state, which are ordinarily considered non-reusable waste. The used post consumer material is bonded with the heat bondable textile material to form the nonwoven sheet material and panels formed therefrom.Type: ApplicationFiled: June 24, 2010Publication date: March 24, 2011Inventors: Harry F. Gladfelter, Christopher A. Foy, David Briggs, Eric K. Staudt
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Publication number: 20110059669Abstract: A biodegradable, substantially continuous filament is provided. The filament contains a first component formed from at least one high melting polyester and a second component formed from at least one low melting polyester. The low melting point polyester is an aliphatic-aromatic copolyester formed by melt blending a polymer and 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 the formation of substantially continuous filaments.Type: ApplicationFiled: August 22, 2007Publication date: March 10, 2011Inventors: Aimin He, James H. Wang, Vasily A. Topolkaraev, Gregory J. Wideman, Doris Palfery
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Patent number: 7897529Abstract: There is provided a substrate (1) capable of carrying uniformly dispersed, finely divided, particulate, solid particles, e.g., catalyst particles (10) and sustaining temperatures in excess of 1200 degrees F. The substrate comprises a top layer (2) for containing the particles (10) and composed of quartz fibers (4) with an average diameter of between about 0.1 and 4 microns and about 0 to 13% of microglass fibers having a softening point of about 1000 degrees F. A support layer (3) is composed of the fibers of the top layer and, in addition, bulk refractory, e.g., ceramic, fibers (6) having and average diameter of about 1 to 4 microns and 0 to 50% of chopped e-glass fiber (7). A method for producing the substrate is provided that includes wet laying the top and bottom layers in spaced apart times so that the juncture (8) between the two layers has intermingled fibers whereby the consolidated layers are not easily separated.Type: GrantFiled: March 21, 2008Date of Patent: March 1, 2011Assignee: Lydall, Inc.Inventors: Abhishek D. Saxena, Paul N. Segit, Stephen E. Gross
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Patent number: 7897012Abstract: This invention is to provide a sheet product that is excellent in moisture absorption amount, moisture absorption speed and moisture release speed and is capable of keeping a powder from falling off and that can have a large content of a moisture adsorbent, and the sheet product of this invention contains (a) a moisture adsorbent formed of a tubular or fibrous metal oxide, (b) a cellulosic fibrillated fiber, and (c) an organic fiber having a fineness of 0.01 dtex to 0.45 dtex and is characteristically produced by a paper-making method.Type: GrantFiled: July 4, 2007Date of Patent: March 1, 2011Assignee: Mitsubishi Paper Mills LimitedInventors: Kazuchiyo Takaoka, Masanobu Matsuoka, Masatoshi Kito
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Publication number: 20110028062Abstract: Disclosed are bicomponent fibers with aliphatic polyester forming a first component and a polyolefin forming a second component wherein the polyolefin contains an adjuvant improving the biodegradability of said polyolefin. Textile sheets comprising these bicomponent fibers are comparable in their mechanical properties to polyolefin based textile sheets while these are more efficiently decomposed by the action of microorganisms as polyolefin based textile sheets.Type: ApplicationFiled: February 14, 2008Publication date: February 3, 2011Inventors: Stephen O. Chester, Steffen Bornemann
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Patent number: 7871947Abstract: Provided herein is a non-stratified, or homogeneous, non-woven composite having (a) strength-imparting fibers of a relatively high denier and (b) binder fibers of a lower denier that adhere the composite together and that form a smooth, stiff skin on the outer surfaces of the composite. In one instance, the strength-imparting fibers are staple fibers and the binder fibers are bicomponent fibers having a low melt component. In a variation, the composite also contains a small percentage by weight (that is, less than 20%) of flame retardant fibers that impart flame resistant properties to the composite. Preferably, all of the fibers are comprised of the same polymeric material (e.g., polyester), so that the composite is recyclable. The resulting composite exhibits excellent flame retardance, strength, and stiffness, as well as having a smooth surface for attachment of a decorative fabric or other material. A process for manufacturing such composites is also provided.Type: GrantFiled: October 22, 2008Date of Patent: January 18, 2011Assignee: Milliken & CompanyInventor: LeAnne O. Flack
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Patent number: 7855157Abstract: A cosmic and solar radiation shielding structure that also has structural attributes is comprised of three layers. The first layer is 30-42 percent by volume of ultra-high molecular weight (UHMW) polyethylene fibers, 18-30 percent by volume of graphite fibers, and a remaining percent by volume of an epoxy resin matrix. The second layer is approximately 68 percent by volume of UHMW polyethylene fibers and a remaining percent by volume of a polyethylene matrix. The third layer is a ceramic material.Type: GrantFiled: June 19, 2008Date of Patent: December 21, 2010Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Raj K. Kaul, Abdulnasser Fakhri Barghouty, Benjamin G. Penn, Anthony Bruce Hulcher
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Patent number: 7851392Abstract: A non-woven flame retardant barrier can be prepared from low denier, charring fibers and substantially free of polymers made from halogenated monomers. The charring fibers can be modified viscose fibers, for example Visil®. The blend of low denier fibers can be, for example, a blend of 1.5 denier fibers and 3.0 denier fibers.Type: GrantFiled: July 1, 2008Date of Patent: December 14, 2010Assignee: Wm. T. Burnett IP, LLCInventor: Greg Davis
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Publication number: 20100310845Abstract: The present invention is directed to a fluid permeable structured fibrous web comprising thermally stable, fibers that are thermally bonded together using heat producing a base substrate that is thermally stable. The base substrate is textured via mechanical treatment producing a structured fibrous web having an aged caliper of less than 1.5 mm, a vertical wicking height of at least 5 mm, a permeability of at least 10,000 cm2/(Pa·s) and a specific volume of at least 5 cm3/g. The structured fibrous web provides optimal fluid wicking and the fluid acquisition capabilities and is directed toward fluid management applications.Type: ApplicationFiled: June 3, 2009Publication date: December 9, 2010Inventors: Eric Bryan Bond, Carola Elke Beatrice Krippner, Ute Froehlich
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Patent number: 7825050Abstract: A nonwoven composite has a first surface, a second surface, and a thickness extending between the first and second surfaces. The nonwoven composite comprises a plurality of natural fibers, a plurality of binder fibers, and a VOC-absorbing material. The binder fibers are bonded to or interlocked with the natural fibers. The VOC-absorbing material is dispersed within the nonwoven composite in such a manner that the density of the VOC-absorbing material in the nonwoven composite is greatest adjacent to the second surface of the nonwoven composite. A method for producing a nonwoven composite is also described.Type: GrantFiled: August 3, 2007Date of Patent: November 2, 2010Assignee: Milliken & CompanyInventors: David E. Wilfong, Wei Xiao, Gregory J. Thompson, Raymond C. Sturm
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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: 7816290Abstract: The invention relates to a nonwoven mat as half-stuff which contains a high performance thermoplast as melt fiber and a reinforcing fiber, and also a method for producing a nonwoven mat of this type and fiber composites produced from the nonwoven mat.Type: GrantFiled: April 1, 2004Date of Patent: October 19, 2010Assignee: Frenzelit-Werke GmbH & Co., K.G.Inventors: Wilfried Erb, Peter Übelmesser
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Patent number: 7781512Abstract: A system for curing a binders applied to glass fibers is disclosed. The curing of the binder is accomplished by passing the binder coated glass fibers through a curing oven having one or more temperature zones. The temperature of the binder coated glass fibers is monitored and the temperature in the curing oven is adjusted to ensure proper heating of the glass fibers thereby ensuring uniform curing of the binder composition. Temperature measurements are made either as the product traverses the oven or as the cured product exits the curing oven. The invention is particularly useful for curing acrylic thermoset binders and formaldehyde-free binders.Type: GrantFiled: July 9, 2004Date of Patent: August 24, 2010Assignee: Johns ManvilleInventors: Mark William Charbonneau, Derek C. Bristol, Harrison John Brown, Charles John Freeman
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Patent number: 7772143Abstract: The invention relates to a multilayer, composite, fleece material having a core layer and at least one cover layer attached to the core layer, where the at least one cover layer is needled with the core layer such that fibers of the at least one cover layer protrude into the core layer. The multilayer, composite, fleece material is intended for use in the manufacture of interior panels of vehicles and to have improved mechanical properties, low thermal conductivity, very low tendency to produce emissions, and good acoustic properties when used for that purpose, as well as enable its inexpensive manufacture.Type: GrantFiled: September 12, 2007Date of Patent: August 10, 2010Assignee: Sandler AGInventors: Stefan Hermann, Wolfgang Höflich
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Patent number: 7749927Abstract: Tethered flange corners including at least one ply of barrier fibers and at least one fiber tow wrapped about the barrier fibers. Also included are flanges having a tethered corner containing at least one ply of barrier fibers, at least one fiber tow wrapped about the barrier fibers, at least one ply of filler fibers applied over the fiber tow, and at least one ply of flange fibers applied over the filler fibers. Additionally included are articles incorporating a composite structure having a flange with a tethered corner containing at least one ply of barrier fibers and at least one fiber tow wrapped about the barrier fibers.Type: GrantFiled: December 27, 2006Date of Patent: July 6, 2010Assignee: General Electric CompanyInventors: Lee Alan Blanton, Curt Brian Curtis, Frank Worthoff
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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: 7745354Abstract: An indoor cleaning tool having a dry fibrous base material is provided. An antigenicity-reducing composition including an antigenicity-reducing component, an oil and a surfactant are applied to the fibrous base material. Preferably, the antigenicity-reducing component is an extract of an olea or a ligustrum plant extracted with water or an organic solvent.Type: GrantFiled: December 15, 2005Date of Patent: June 29, 2010Assignee: Uni-Charm CorporationInventors: Akemi Tsuchiya, Masatoshi Fujiwara
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Publication number: 20100151333Abstract: The present invention provides a fiber having a nano-order fiber diameter, which is produced by without a process of dehydration and cyclization by a heat treatment after fiber spinning and has excellent heat resistance and mechanical strength, and a non-woven fabric composed of the fiber, and discloses the polyamide-imide fiber and the non-woven fabric having an average fiber diameter of from 0.001 ?m to 1 ?m and also discloses the process for producing threrof. The present invention also provides a separator for an electronic component which has a high conductivity and a small separator thickness and is improved in safety during reflow soldering or short-circuiting, and discloses the separator composed of a non-woven fabric obtained by an electro-spinning method.Type: ApplicationFiled: July 27, 2006Publication date: June 17, 2010Inventors: Masahiko Nakamori, Yasuo Ohta, Hisato Kobayashi, Syoji Oda, Nobuyuki Taniguchi, Daisuke Sakura, Katsuya Shimeno
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Patent number: 7727915Abstract: An allergen trap is provided. The allergen trap includes a woven or nonwoven substrate having at least one strata. The trap is impregnated with or otherwise treated with a tacky adhesive by which allergens may be trapped. An example of an allergen is a dust mite. The tacky adhesive, in turn, may be treated with a miticide or activated carbon.Type: GrantFiled: January 18, 2007Date of Patent: June 1, 2010Assignee: Buckeye Technologies Inc.Inventors: Stephen A. Skirius, John H. Roberts, Brian Boehmer, Laurence A. Moose, Jr., Namitha R. Sundara
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Publication number: 20100124864Abstract: Disclosed is a multilayer fabric and a method of forming a multilayer fabric comprising one or more facing layers and one or more elastic layers adjacent to or sandwiched there between, the one or more facing layers comprising a polypropylene; and a propylene-?-olefin elastomer having and an MFR of less than 80 dg/min; wherein the facing layer is extensible and non-elastic and has a Handle-O-Meter value of less than 60 g and a 1% Secant Flexural Modulus of less than 1000 MPa. In certain embodiments, polyethylenes are absent from the facing layer(s).Type: ApplicationFiled: November 14, 2008Publication date: May 20, 2010Inventors: Raja N. Dharmarajan, Prasadarao Meka
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Patent number: 7709405Abstract: A non-woven material including first effect fibers, first binder fibers, second binder fibers, and optionally second effect fibers. The non-woven material has a first planar zone and a second planar zone. The first planar zone includes a greater concentration of first effect fibers and first binder fibers. The second planar zone includes a greater concentration of second effect fibers and second binder fibers. The first planar zone can include a first surface skin associated with the first planar zone on the exterior of the non-woven material, and a second surface skin associated with the second planar zone on the exterior of the non-woven material. The non-woven material has a woven, knitted, or non-woven layer added on either one or both sides of the non-woven material.Type: GrantFiled: October 27, 2006Date of Patent: May 4, 2010Assignee: Milliken & CompanyInventors: David E. Wenstrup, Gregory J. Thompson, LeAnne Flack, Thomas E. Godfrey
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Patent number: 7704900Abstract: Provided is an artificial leather sheet that comprises microfine fibers of an inelastic polymer having a mean fiber diameter of at most 5 ?m and an elastic polymer, in which the major portion of the elastic polymer forms a fibrous structure of the entangled nonwoven fabric with the microfine fibers of inelastic polymer throughout the entire layer of the artificial leather sheet in the thickness direction thereof, and a part of the elastic polymer forms a porous layer integrated with the entangled nonwoven fabric structure on at least one face of the artificial leather sheet. The artificial leather sheet does not substantially undergo structure deformation even when repeatedly elongated and deformed. It has good elastic stretchability, and has a soft and dense feel, and its appearance is good not detracting from the drapability of the sheet.Type: GrantFiled: August 30, 2004Date of Patent: April 27, 2010Assignee: Kuraray Co., Ltd.Inventors: Shinichi Yoshimoto, Tetsuya Ashida, Hisao Yoneda