Strand Or Fiber Material Specified As Having Micro Dimensions (i.e., Microfiber) Patents (Class 442/340)
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Patent number: 8240484Abstract: Herein are disclosed high loft spunbonded webs that are substantially free of crimped fibers and gap-formed fibers. The webs exhibit a solidity of from less than 8.0% to about 4.0% and a ratio of Effective Fiber Diameter to Actual Fiber Diameter of at least 1.40. Also disclosed are methods of making such webs.Type: GrantFiled: March 15, 2012Date of Patent: August 14, 2012Assignee: 3M Innovative Properties CompanyInventors: Andrew R. Fox, John D. Stelter, Michael R. Berrigan, Jonathan M Lise
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Patent number: 8211218Abstract: The assemblies of the invention can comprise a fine fiber layer having dispersed within the fine fiber layer an active particulate material. Fluid that flows through the assemblies of the invention can have any material dispersed or dissolved in the fluid react with, be absorbed by, or adsorbed onto, the active particulate within the nanofiber layer. The structures of the invention can act simply as reactive, absorptive, or adsorptive layers with no filtration properties, or the structures of the invention can be assembled into filters that can filter particulate from a mobile fluid while simultaneously reacting, absorbing, or adsorbing materials from the mobile fluid.Type: GrantFiled: August 2, 2011Date of Patent: July 3, 2012Assignee: Donaldson Company, Inc.Inventors: Andrew J. Dallas, William Lefei Ding, Jon D. Joriman, Dustin Zastera, James R. Giertz, Veli E. Kalayci, Hoo Y. Chung
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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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Publication number: 20120115386Abstract: A method of manufacturing nano-fiber non-woven fabrics is provided. The method comprises preparing a polyurethane solution by dissolving polyurethane in an organic solvent, producing an electrospinning solution by adding far infrared ray emitting particles, antibacterial inorganic particles, and deodorization inorganic particles to the polyurethane solution, and electrospinning the electrospinning solution to form the nano-fiber non-woven fabric. The far infrared ray emitting particles may be obtained by adding a metal oxide to ceramics and sintering the metal oxide-added ceramics. The antibacterial inorganic particles may be obtained by impregnating a zirconium-based carrier with silver ions.Type: ApplicationFiled: March 30, 2011Publication date: May 10, 2012Applicants: HYUNDAI MOTOR COMPANY, Soongsil University Research Consortium techno-Park, KIA MOTORS CORPORATIONInventors: Phil Jung Jeong, Seung Soo Ryu, Jun Mo Ku, Hee Jun Jeong, Joo Yong Kim, Min Ki Choi, Jung Yeol Kim
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Patent number: 8173559Abstract: The present invention provides nonwoven webs comprising multicomponent nanocomposite fibers that enable the nonwoven webs to possess high extensibility. The multicomponent nanocomposite fibers comprise two or more components. Each component comprises a polymer composition and at least one component comprises a nanoparticles composition. The nonwoven webs comprising the multicomponent nanocomposite fibers have an average elongation at peak load which is greater than the average elongation at peak load of comparable nonwoven webs without nanocomposite fibers.Type: GrantFiled: November 30, 2006Date of Patent: May 8, 2012Assignee: The Procter & Gamble CompanyInventors: Dimitris Ioannis Collias, Norman Scott Broyles, Eric Bryan Bond
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Patent number: 8168550Abstract: The present invention provides nonwoven webs comprising monocomponent nanocomposite fibers that enable the nonwoven webs to possess high extensibility. The monocomponent nanocomposite fibers comprise a polymer composition and a nanoparticles composition. The nonwoven webs comprising the monocomponent nanocomposite fibers have an average elongation at peak load which is greater than the average elongation at peak load of comparable nonwoven webs without nanocomposite fibers.Type: GrantFiled: November 30, 2006Date of Patent: May 1, 2012Assignee: The Procter & Gamble CompanyInventors: Dimitris Ioannis Collias, Norman Scott Broyles, Eric Bryan Bond
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Patent number: 8162153Abstract: Herein are disclosed high loft spunbonded webs that are substantially free of crimped fibers and gap-formed fibers. The webs exhibit a solidity of from less than 8.0% to about 4.0% and a ratio of Effective Fiber Diameter to Actual Fiber Diameter of at least 1.40. Also disclosed are methods of making such webs.Type: GrantFiled: July 2, 2009Date of Patent: April 24, 2012Assignee: 3M Innovative Properties CompanyInventors: Andrew R. Fox, John D. Stelter, Michael R. Berrigan, Jonathan M Lise
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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: 8138107Abstract: Disclosed is a spunbonded non-woven made of polyolefin filaments having a titer <1.6 dtex, the spunbonded non-woven having a surface weight ?20 g/m2, a density ?0.06 g/cm3, a maximum tensile force of between 9.5 and 62 N in the direction of the machine and of between 4.5 and 35 N perpendicular to the direction of the machine.Type: GrantFiled: March 13, 2009Date of Patent: March 20, 2012Assignee: Fiberweb Corovin GmbHInventors: Steffen Bornemann, Markus Haberer, Stefanie Streich, Dag Fohlin
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Patent number: 8118901Abstract: Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials.Type: GrantFiled: October 30, 2009Date of Patent: February 21, 2012Assignee: Donaldson Company, Inc.Inventors: Hoo Y. Chung, John R. B. Hall, Mark A. Gogins, Douglas G. Crofoot, Thomas M. Weik
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Patent number: 8088697Abstract: A fibrous ceramic material including a plurality of fibers entangled with one another. The fibrous ceramic material includes at least one connector projecting between the fibers. At least a portion of the fibers have the connectors extending between and attach the fibers to one another. A method of manufacturing the fibrous ceramic material includes providing a precursor material having a plurality of fibers. A holder is provided for holding the precursor material. The precursor material is placed on the holder and both are heated to between about 1500 degrees Celsius and about 1700 degrees Celsius to form the fibrous ceramic material, thereby causing connectors to project from a portion of the fibers and attach the fibers to one another.Type: GrantFiled: September 18, 2008Date of Patent: January 3, 2012Assignee: FuelCell Energy, Inc.Inventors: Chao-Yi Yuh, Dana A. Kelley, Nikhil H. Jalani
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Publication number: 20110318642Abstract: The present invention provides a conductive sheet having a surface resistance of 10 ?/sq or lower on both surfaces, the conductive sheet comprising a sheet (A) and a sheet (B) laminated to the sheet (A), the sheet (A) having an apparent specific gravity of 0.05 g/cm3 to 0.50 g/cm3 and being formed from fibers having a diameter within the range between 3 and 20 ?m, and the sheet (B) being formed from fibers having a diameter of 3 ?m or smaller. The sheet (A) may be a fibrous material comprises an organic polymer fiber as its main component.Type: ApplicationFiled: September 6, 2011Publication date: December 29, 2011Applicant: KURARAY CO., LTD.Inventors: Masakazu NISHIYAMA, Eiichi ISHIDA, Yoshiaki YASUDA
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Publication number: 20110288026Abstract: The invention is directed to formation and use of electroprocessed collagen, including use as an extracellular matrix and, together with cells, its use in forming engineered tissue. The engineered tissue can include the synthetic manufacture of specific organs or tissues which may be implanted into a recipient. The electroprocessed collagen may also be combined with other molecules in order to deliver substances to the site of application or implantation of the electroprocessed collagen. The collagen or collagen/cell suspension is electrodeposited onto a substrate to form tissues and organs.Type: ApplicationFiled: March 21, 2011Publication date: November 24, 2011Inventors: David G. Simpson, Gary L. Bowlin, Gary E. Wnek, Peter J. Stevens, Marcus E. Carr, Jamil A. Matthews, Saravanamoorthy Rajendran
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Publication number: 20110275269Abstract: The present invention is directed to articles comprising nanofibers. The nanofibers, having a diameter of less than 1 micron, may comprise a significant number of the fibers in one layer of the web contained by the article. Preferably, the nanofibers are produced in a melt film fibrillation process. The articles include diapers, training pants, adult incontinence pads, catamenials products such as feminine care pads and pantiliners, tampons, personal cleansing articles, personal care articles, and personal care wipes including baby wipes, facial wipes, and feminine wipes.Type: ApplicationFiled: July 21, 2011Publication date: November 10, 2011Inventors: Eric Bryan Bond, Rajeev Chhabra, Olaf Erik Alexander Isele, Han Xu
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Patent number: 8048210Abstract: The assemblies of the invention can comprise a fine fiber layer having dispersed within the fine fiber layer an active particulate material. Fluid that flows through the assemblies of the invention can have any material dispersed or dissolved in the fluid react with, be absorbed by, or adsorbed onto, the active particulate within the nanofiber layer. The structures of the invention can act simply as reactive, absorptive, or adsorptive layers with no filtration properties, or the structures of the invention can be assembled into filters that can filter particulate from a mobile fluid while simultaneously reacting, absorbing, or adsorbing materials from the mobile fluid.Type: GrantFiled: December 29, 2009Date of Patent: November 1, 2011Assignee: Donaldson Company, Inc.Inventors: Andrew J. Dallas, Lefei Ding, Jon D. Joriman, Dustin Zastera, James R. Giertz, Veli Kalayci, Hoo Y. Chung
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Patent number: 8048815Abstract: The present invention relates to a composite article and to a process for manufacturing the composite article. The composite article comprises multiple layers including high tenacity fibers incorporated into a fabric and a core thermoplastic resin. The fabric may be coated with a surface treatment agent, a polymer matrix resin. Single or multiple layers of the composite articles may be formed into a composite part having high strength, rigidity, fast molding cycle time and extremely good conformability in a 3-dimensional mold. The composite parts formed by this process have high part strength in all directions.Type: GrantFiled: December 11, 2008Date of Patent: November 1, 2011Assignee: Kubota Research, Inc.Inventors: Masanori Kubota, Ayako Kubota, Munetaka Kubota, Alexander Kubota
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Patent number: 8043984Abstract: An elastic laminate capable of being rolled for storage and unwound from a roll when needed for use, includes an elastic layer of an array of continuous filament strands with meltblown deposited on the continuous filament strands, and a facing layer bonded to only one side of the elastic layer. The meltblown layer may include an elastic polyolefin-based meltblown polymer having a degree of crystallinity between about 3% and about 40%. The laminate suitably has an inter-layer peel strength of less than about 70 grams per 3 inches cross-directional width at a strain rate of 300 mm/min. Alternatively or additionally, the continuous filament strands and/or the facing layer may include an elastic polyolefin-based meltblown polymer having a degree of crystallinity between about 3% and about 40%.Type: GrantFiled: December 14, 2004Date of Patent: October 25, 2011Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Bryan J. Stadelman, Braulio A. Polanco, Joerg Hendrix, Peter M. Kobylivker, Peiguang Zhou, Bryon P. Day, Wing-Chak Ng, Steven R. Stopper
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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: 8026190Abstract: Insulating element from mineral fibers for shipbuilding with an insulating element in form of a plate or roll felt for shipbuilding the composition of the mineral fibers of the insulating element points an alkali/alkaline-earth mass ratio of the fiber structure of the insulating element is determined by an average geometrical fiber diameter of ?4 ?m and a surface weight of 0.8 through 4.3 kg/m2 and a binding agent portion above 0.5 until 4 weight %.Type: GrantFiled: September 28, 2010Date of Patent: September 27, 2011Assignee: Saint-Gobain IsoverInventors: Horst Keller, Ina Bruer, Gerald Amannt, Jean-Luc Bernard
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Patent number: 8021996Abstract: The present invention provides a nonwoven web prepared from multicomponent fibers which are partially split. The partially split multicomponent fibers have at least one component of the multicomponent fiber separated from the remaining components of the multicomponent fiber along a first section of the longitudinal length of the multicomponent fibers. Along a second section of the longitudinal length of the multicomponent fibers the components of the multicomponent fibers remain together as a unitary fiber structure. In addition, part of the second section of the multicomponent fibers is bonded to part of a second section of an adjacent multicomponent fiber.Type: GrantFiled: December 23, 2008Date of Patent: September 20, 2011Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Susan Kathleen Walser, Leon Eugene Chambers, Jr., Reginald Smith, Nancy J. Zimmerman, Kiran K. Reddy, Nina Frazier, David Myers
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Patent number: 8017534Abstract: Disclosed is a fibrous nonwoven structure comprising meltblown fibrous materials and at least one secondary fibrous material and method of preparing. In one aspect, the fibrous nonwoven structure has a formation index of between 70 and 135. In another aspect, the fibrous nonwoven structure has an opacity that is greater than 72 percent at a basis weight of between about 35 and 55 grams per square meter. The fibrous nonwoven substrate may be utilized as a moist wipe.Type: GrantFiled: March 11, 2009Date of Patent: September 13, 2011Assignee: Kimberly-Clark Worldwide, Inc.Inventors: James Benjamin Harvey, Anthony Mark Gambaro, Paul Alan Giles, David Jon Baer, Allen Frederic Vater
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Publication number: 20110196328Abstract: There is described a new non-woven fabric produced with the electrospinning technique, and the use thereof as new biomaterial for the biomedical and surgical field.Type: ApplicationFiled: July 24, 2009Publication date: August 11, 2011Inventors: Davide Bellini, Lanfranco Callegaro, Marie Astier, Fabio Giusti
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Patent number: 7993724Abstract: Insulation for high temperature applications includes glass fibers having an average diameter of between about 2.7 to about 3.8 microns. In one possible embodiment the insulation includes a polyacrylic acid binder. Such insulation has about 98 weight percent glass fibers and about 2 weight percent binder.Type: GrantFiled: May 9, 2007Date of Patent: August 9, 2011Assignee: Owens Corning Intellectual Capital, LLCInventors: Jacob Chacko, Robert P. Collier, Edward A. Martine
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Patent number: 7989371Abstract: A porous nonwoven web and method of making are disclosed, wherein the web contains meltblown fibers and staple fibers. The meltblown fibers may be present as a bimodal mixture of microfibers and mesofibers, and comprise an intermingled mixture with staple fibers further intermingled therein.Type: GrantFiled: June 22, 2007Date of Patent: August 2, 2011Assignee: 3M Innovative Properties CompanyInventors: Seyed A. Angadjivand, John M. Brandner, James E. Springett
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Patent number: 7989372Abstract: A molded respirator and method of making are disclosed, wherein the molded respirator is made from a porous nonwoven web containing meltblown fibers and staple fibers. The meltblown fibers may be present as a bimodal mixture of microfibers and mesofibers, and comprise an intermingled mixture with staple fibers further intermingled therein. The molded respirator may also contain at least one secondary filtration layer.Type: GrantFiled: June 22, 2007Date of Patent: August 2, 2011Assignee: 3M Innovative Properties CompanyInventors: Seyed A. Angadjivand, John M. Brandner, James E. Springett
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Patent number: 7989369Abstract: The present invention is directed to articles comprising nanofibers. The nanofibers, having a diameter of less than 1 micron, may comprise a significant number of the fibers in one layer of the web contained by the article. Preferably, the nanofibers are produced in a melt film fibrillation process. The articles include diapers, training pants, adult incontinence pads, catamenials products such as feminine care pads and pantiliners, tampons, personal cleansing articles, personal care articles, and personal care wipes including baby wipes, facial wipes, and feminine wipes.Type: GrantFiled: April 19, 2005Date of Patent: August 2, 2011Assignee: The Procter & Gamble CompanyInventors: Eric Bryan Bond, Rajeev Chhabra, Olaf Erik Alexander Isele, Han Xu
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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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Publication number: 20110147301Abstract: Nonwoven web products containing sub-micron fibers, and more specifically nonwoven web products having sub-micron fibers formed by fibrillation of polymer films, and nonwoven materials and articles incorporating them, and methods of producing these products.Type: ApplicationFiled: March 7, 2011Publication date: June 23, 2011Applicant: POLYMER GROUP, INC.Inventors: Michael H. Johnson, Timothy Krause, Michael W. Hayes, Rajeev Chhabra, Savas Aydore, Olaf Erik Alexander Isele, Han Xu
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Patent number: 7947069Abstract: In one aspect the present invention provides medical devices 10 that each include a plurality of fibers 22, substantially all of the plurality of fibers 22 each including a portion having a maximum diameter of at least five micrometers, wherein substantially all of fibers 22 form a layer on at least one external surface of medical device 10. In another aspect, the present invention provides methods of manufacturing medical devices 10, the methods including the steps of: (a) applying a layer comprising a plurality of fibers 22 to at least one surface of medical device 10; and (b) matching the value of the Young's modulus of the layer to +/?35% (in some embodiments to +/?20%) of the value of the Young's modulus of an animal tissue.Type: GrantFiled: December 10, 2002Date of Patent: May 24, 2011Assignee: University of WashingtonInventor: Joan E. Sanders
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Patent number: 7947359Abstract: The present invention provides a laminated nonwoven fabric wherein the nonwoven fabric is a laminated one formed by integrating, through compressive bonding, a stacked nonwoven fabric structure comprising an upper and a lower thermoplastic synthetic filamentary fiber layer that have a fiber diameter from 7 ?m or more to 20 ?m, and an intermediate layer composed of thermoplastic synthetic fine fibers that have a fiber diameter of 5 ?m or less, the laminated nonwoven fabric having an intimately mixed structure in which a portion of the fine fibers is intruded into at least one face side of the filamentary fiber layers with an intrusion index of 0.36 or more to bond, surround or interlace the filamentary fibers, a basis of weight of from 10 g or more to 250 g/m2, and a bulk density of 0.20 g/cm3 or more.Type: GrantFiled: April 22, 2004Date of Patent: May 24, 2011Assignee: Asahi Kasei Fibers CorporationInventors: Ryuji Suzuka, Mitsuji Nakakita
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Publication number: 20110117319Abstract: A nanofiber sheet that has a high degree of transparency, a high modulus of elasticity, a low coefficient of linear thermal expansion as well as high degrees of flatness and smoothness, in particular, a nanofiber sheet produced as a uniform and flat sheet having a high optical transmittance with cellulose as the only component. This sheet has the following characteristics: Calculated for a thickness of 60 ?m, the transmittance for parallel rays of light having a wavelength of 600 nm is equal to or higher than 70%; The Young's modulus measured in accordance with the JIS K7161 method is equal to or greater than 10 GPa; The coefficient of linear thermal expansion measured in accordance with the ASTM D606 method is equal to or smaller than 10 ppm/K.Type: ApplicationFiled: June 26, 2009Publication date: May 19, 2011Applicants: KYOTO UNIVERSITY, PIONEER CORPORATION, HITACHI, LTD., ROHM CO., LTD.Inventors: Hiroyuki Yano, Masaya Nogi
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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: 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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Patent number: 7927690Abstract: It is an object of the present invention to provide a nonwoven fabric which is excellent in the heat resistance and the chemical resistance, of which the fiber diameter is small, which is excellent in the strength and of which the maximum pore diameter is small. A nonwoven fabric made of an ethylene/tetrafluoroethylene copolymer, characterized in that the nonwoven fabric is mutually fused continuous fibers of an ethylene/tetrafluoroethylene copolymer which has a melt viscosity of from higher than 100 to 1,500 PaĀ·s at 240Ā° C.Type: GrantFiled: March 5, 2009Date of Patent: April 19, 2011Assignee: Asahi Glass Company, LimitedInventors: Daisuke Taguchi, Ken Iruya, Seigo Kotera
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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/(m2Ā·min), wherein the product of the air permeability and the basis weight is ?5000 g/(mĀ·min).Type: GrantFiled: March 20, 2009Date of Patent: April 5, 2011Assignee: Fiberweb Corovin GmbHInventors: Steffen Bornemann, Markus Haberer
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Patent number: 7902096Abstract: A porous monocomponent nonwoven web contains a bimodal mass fraction/fiber size mixture of intermingled continuous microfibers and larger size fibers of the same polymeric composition. There are at least five times as many microfibers as larger size fibers, and a histogram of the mass fraction of fibers vs. fiber size exhibits a larger size fiber mode greater than 10 ?m. The web may be made by flowing fiber-forming material through a die cavity having larger size orifices and at least five times as many smaller size orifices to form filaments, attenuating the filaments into fibers and collecting the attenuated fibers to form the nonwoven web. The web is especially well suited to the manufacture of self-supporting three dimensional articles such as molded cup-shaped respirators and pleated air filters.Type: GrantFiled: July 31, 2006Date of Patent: March 8, 2011Assignee: 3M Innovative Properties CompanyInventors: John M. Brandner, William J. Kopecky, Seyed A. Angadjivand, James E. Springett, Timothy J. Lindquist
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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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Publication number: 20110020590Abstract: An aspect of the invention is a split leather product provided with a base material comprising split leather, and a skin layer laminated on a surface of the base material. The skin layer comprises a composite body of an entangled nonwoven fabric formed from microfine fibers, and a polymeric elastomer that impregnates the gaps in the entangled nonwoven fabric. The entangled nonwoven fabric in such a split leather product has the effect of increasing physical strength without detracting from a leather-like texture, in the same way as the longitudinally and transversally crisscrossing collagen fibers in the reticular layer. It is thus possible to obtain a split leather product that resembles leather not only in outward appearance but also in the feel derived from wrinkles and the like resulting when the leather is bent.Type: ApplicationFiled: March 24, 2009Publication date: January 27, 2011Applicant: KURARAY CO., LTD.Inventors: Hisao Yoneda, Yoshio Kimura, Yoshiaki Wakimoto, Kiyohiko Miyauchi
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Publication number: 20110000845Abstract: Herein are disclosed high loft spunbonded webs that are substantially free of crimped fibers and gap-formed fibers. The webs exhibit a solidity of from less than 8.0% to about 4.0% and a ratio of Effective Fiber Diameter to Actual Fiber Diameter of at least 1.40. Also disclosed are methods of making such webs.Type: ApplicationFiled: July 2, 2009Publication date: January 6, 2011Inventors: Andrew R. Fox, John D. Stelter, Michael R. Berrigan, Jonathan M. Lise
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Publication number: 20100317249Abstract: An article is provided that comprises fibers, as is a method of forming the article. The fibers comprise an organopolysiloxane component selected from (i) an organopolysiloxane having the formula (R3SiOi/2)w(R2Si?2/2)x(RSi?3/2)y(Si?4/2)z (I), wherein each R is selected from the group of an inorganic group, an organic group, and combinations thereof, w is from 0 to 0.95, x is from 0 to 0.95, y is from 0 to 1, z is from 0 to 0.9, and w+x+y+z=1, and (ii) a cured product of said organopolysiloxane having the formula (I), and combinations of (i) and (ii), provided that the fibers are free from organic polymers, organic copolymers, and organosiloxane-organic copolymers. The method of forming the article includes the step of forming fibers from a composition. The composition used to form the fibers comprises the organopolysiloxane having the formula (I), provided that the composition is free from organic polymers, all-organic copolymers, and organosiloxane-organic copolymers.Type: ApplicationFiled: November 20, 2008Publication date: December 16, 2010Inventors: Aneta Clark, Randal Hill, Randall Schmidt, Steven Snow
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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 VisilĀ®. 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: 20100291828Abstract: A nanostructure composed of a plurality of peptides, each peptide containing at least one aromatic amino acid, whereby one or more of these peptides is end-capping modified, is disclosed. The nanostructure can take a tubular, fibrillar, planar or spherical shape, and can encapsulate, entrap or be coated by other materials. Methods of preparing the nanostructure, and devices and methods utilizing same are also disclosed.Type: ApplicationFiled: July 26, 2010Publication date: November 18, 2010Applicant: Ramot at Tel-Aviv University Ltd.Inventors: Meital RECHES, Ehud Gazit
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Publication number: 20100285101Abstract: The disclosure relates to composite nonwoven fibrous webs including a population of sub-micrometer fibers having a median diameter less than one micrometer (?m), and a population of microfibers having a median diameter of at least 1 ?m. At least, one of the fiber populations is oriented, and each composite nonwoven fibrous web has a thickness and exhibits a Solidity of less than 10%. The disclosure also relates to methods of making composite nonwoven fibrous webs, and articles including composite nonwoven fibrous webs made according to the methods. In exemplary applications, the articles may be used as gas filtration articles, liquid filtration articles, sound absorption articles, surface cleaning articles, cellular growth support articles, drug delivery articles, personal hygiene articles, or wound dressing articles.Type: ApplicationFiled: December 15, 2008Publication date: November 11, 2010Inventors: Eric M. Moore, Michael R. Berrigan
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Patent number: 7829486Abstract: The leather-like sheet substrate of the present invention comprises a fiber-entangled nonwoven fabric that comprises a microfine fiber bundle (A) and a microfine fiber bundle (B) in a blending ratio (A)/(B) of 30/70 to 70/30 by mass and a polymeric elastomer contained in the fiber-entangled nonwoven fabric. The microfine fiber bundle (A) comprises 10 to 100 microfine fibers each of which has a single fiber fineness of 0.5 dtex or less and which are made of an elastic polymer having a JIS A hardness of 90 to 97. The microfine fiber bundle (B) comprises a microfine fiber which has a single fiber fineness of 0.5 dtex or less and which is made of a non-elastic polymer. Because of its excellent stretchability in both the machine and transverse directions and drapeability, the leather-like sheet substrate is particularly suitable as the material for clothing.Type: GrantFiled: January 29, 2004Date of Patent: November 9, 2010Assignee: Kuraray Co., Ltd.Inventors: Yoshiki Nobuto, Yoshihiro Tanba
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Publication number: 20100252426Abstract: A porous sheet which has good balance between electrolytic solution permeability and dry-up resistance, is superior in high-rate property, and is suitable for a separator for an electrochemical element, and a manufacturing method thereof are provided. The present invention relates to a porous sheet comprising a porous substrate containing non-fibrillar fibers having an average fiber diameter of 0.01-10 ?m and a net-like structural body composed of a polymer, the net-like structural body having penetrating pores with a pore diameter of 0.01-10 ?m, wherein the net-like structural body is present at the surface and at the internal of the porous substrate and the non-fibrillar fibers having an average fiber diameter of 0.01-10 ?m and the net-like structural body are entangled; to a separator for an electrochemical element comprising the porous sheet; and to a method for manufacturing the porous sheet.Type: ApplicationFiled: June 13, 2008Publication date: October 7, 2010Inventors: Takahiro Tsukuda, Masatoshi Midorikawa, Tomohiro Sato
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Patent number: 7803729Abstract: Insulating element from mineral fibers for shipbuilding with an insulating element in form of a plate or roll felt for shipbuilding the composition of the mineral fibers of the insulating element points an alkali/alkaline-earth mass ratio of the fiber structure of the insulating element is determined by an average geometrical fiber diameter of ?4 ?m and a surface weight of 0.8 through 4.3 kg/m2 and a binding agent portion above 0.5 until 4 weight %.Type: GrantFiled: October 4, 2004Date of Patent: September 28, 2010Assignee: Saint-Gobain IsoverInventors: Horst Keller, Ina Bruer, Gerald Amannt, Jean-Luc Bernard
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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: 7786034Abstract: A process is provided for issuing material from a nozzle in a rotor rotating at a given rotational speed wherein the material is issued by way of a fluid jet. The material can be collected on a collector concentric to the rotor. The collector can be a flexible belt moving in the axial direction of the rotor. The collected material can take the form of discrete particles, fibers, plexifilamentary web, discrete fibrils or a membrane.Type: GrantFiled: March 14, 2006Date of Patent: August 31, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Jack Eugene Armantrout, Lewis Edward Manring, Robert Anthony Marin, Larry R. Marshall
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Multilayer articles having acoustical absorbance properties and methods of making and using the same
Patent number: 7757811Abstract: Multilayer articles having acoustical absorbance properties are disclosed. Methods of making and using the multilayer articles are also disclosed.Type: GrantFiled: October 10, 2006Date of Patent: July 20, 2010Assignee: 3M Innovative Properties CompanyInventors: Andrew R. Fox, David A. Olson, Eric M. Moore, Michael R. Berrigan, David L. Nelson, Bradley W. Eaton, Wayne S. Mahoney -
Publication number: 20100167029Abstract: A web comprising a layer of airlaid pulp or synthetic material overlaying and fastened to at least one layer of regenerated cellulose fiber. The airlaid fluff or synthetic material can be sandwiched between two regenerated cellulose fiber layers. The regenerated cellulose can be viscose or lyocell.Type: ApplicationFiled: December 31, 2008Publication date: July 1, 2010Applicant: WEYERHAEUSER COMPANYInventor: MENGKUI LUO