Microfiber (less Than 100 Micron Diameter) Patents (Class 428/903)
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Patent number: 10786603Abstract: A multilayer sheet can be used in vivo or in an environment in which moisture is adhered, an integrated sheet including the multilayer sheet and a base material, and methods for producing the same. The multilayer sheet has one or more layers from each of a layer (A) composed of sparingly water-soluble polymer and a fiber layer (B) composed of water-soluble polymer are laminated, and at least one of outermost layers is the above-described layer (A) composed of sparingly water-soluble polymer. The time taken from dropping of water onto a surface of the outermost layer of the above-described layer (A) composed of sparingly water-soluble polymer to dissolution of the other outermost layer is 10 seconds to 5 minutes.Type: GrantFiled: March 31, 2015Date of Patent: September 29, 2020Assignee: Toray Industries, Inc.Inventors: Teruhisa Sato, Yoshikazu Yakake, Toru Arakane, Ai Suzuki
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Patent number: 10744240Abstract: A reduced-pressure abdominal treatment device is presented that has a plurality of liquid-impermeable layers with a foam spacer between two of the liquid-impermeable layers. The plurality of liquid-impermeable layers have a coextensive area A1. The foam spacer has a plan-view area A2. A2 is less than 80% of A1 (i.e., A2<0.8 A1). The foam spacer is configured such that, under reduced pressure, a target fluid removal zone experiences reduced-pressure vectors over an angle theta (?) that is typically 360 degrees for a majority of locations in the target fluid removal zone. Applying 360 degrees of reduced pressure helps avoid blockage. The plurality of liquid-impermeable layers may be bonded for various effects. Other devices, systems, and methods are disclosed.Type: GrantFiled: January 6, 2016Date of Patent: August 18, 2020Assignee: KCI Licensinc, Inc.Inventors: Tyler H. Simmons, Alexander G. Sammons
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Patent number: 10697095Abstract: A woven fabric for seats is made of warps and wefts woven into a pattern with a ratio of 1:1, wherein the warps density is 8 strips per unit length and the wefts density is 9.2 strips per unit length. The warps and wefts are both made of polyester and linen, wherein the polyester comprises 94% by weight and the linen comprises 6% by weight.Type: GrantFiled: July 26, 2018Date of Patent: June 30, 2020Assignee: DongGuan Shichang Metals Factory Ltd.Inventor: Song Guo Qiang
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Patent number: 10689782Abstract: The present disclosure relates to a new and improved textile fabric fabricated of twill weave sheeting that has excellent wrinkle resisting characteristics, improved softness and durability over the sheeting fabrics currently being manufactured, enhanced aesthetic appeal, economy in cost of manufacture and other desirable characteristics. The textile fabric of the present disclosure can be formed of warp and weft yarns of twill weave construction wherein each of the warp yarns can be made of a natural material and each of the weft yarns can be made of a synthetic material. In an embodiment, the twill weave sheeting can have warp yarn and weft yarn, wherein the warp yarn and the weft yarn being a cross weave of cotton and polyester.Type: GrantFiled: February 23, 2017Date of Patent: June 23, 2020Inventor: Sachin Jhunjhunwala
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Patent number: 9707663Abstract: A polishing pad is provided with a compression elastic modulus of 0.17 MPa or more and 0.32 MPa or less produced by preparing a nonwoven fabric formed of bundles of ultrafine fibers with an average monofilament diameter of 3.0 ?m or more and 8.0 ?m or less, preparing a polishing pad base by impregnating the nonwoven fabric with a polyurethane based elastomer in an amount of 20 mass % or more and 50 mass % or less relative to the mass of the polishing pad base, and laminating the polishing pad base with a porous polyurethane layer containing wet-solidified polyurethane as primary component which has openings with an average opening diameter of 10 ?m or more and 90 ?m or less in its surface to serve as polishing surface layer.Type: GrantFiled: January 30, 2012Date of Patent: July 18, 2017Assignees: Toray Industries, Inc., Toray Coatex Co., Ltd.Inventors: Kuniyasu Shiro, Masaharu Wada, Hiroyasu Kato, Hajime Nishimura, Satoshi Yanagisawa, Yukihiro Matsuzaki
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Patent number: 8962501Abstract: 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: GrantFiled: March 7, 2011Date of Patent: February 24, 2015Assignee: 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: 8962131Abstract: Transparent conductive films comprising silver nanowires dispersed in polyvinyl alcohol or gelatin can be prepared by coating from aqueous solvent using common aqueous solvent coating techniques. These films have good transparency, conductivity, and stability. Coating on a flexible support allows the manufacture of flexible conductive materials.Type: GrantFiled: March 19, 2010Date of Patent: February 24, 2015Assignee: Carestream Health Inc.Inventors: Choufeng Zou, Karissa Eckert
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Patent number: 8852733Abstract: The present disclosure relates to a fibrous veil and methods of making the same. The fibrous veil includes a base having a plurality of fibers, each of the plurality of fibers having an average diameter ranging from about 7,000 nm to about 9,000 nm. Graphite nano-platelets are attached to at least some of the plurality of fibers without a polymeric binder.Type: GrantFiled: June 16, 2011Date of Patent: October 7, 2014Assignee: GM Global Technology Operations LLCInventors: Choongyong Kwag, Chen-Shih Wang
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Patent number: 8759235Abstract: A new orthopedic prayer mat proposed, whereas the new orthopedic prayer mat has a multiple layered structure. The top layer is made from microfiber which is antimicrobial, anti-molding, water-resistant, anti-dust and heat-resistant. The bottom layer is an anti-slip layer to prevent the user from physical injury in any situation while using the mat, and a soft polyurethane layer and an anti-fatigue layer or a hard polyurethane layer are arranged between the top microfiber layer and the bottom anti-slip layer in order to absorb pressure pressure and providing support, and the soft and hard polyurethane layer are combined at an angle to adjust the ratio of the weight-absorption and bearing to form the orthopedic prayer mat. Further the angle between the layers is tailored for users according to user's weight, height, body structure type and healthy conditions.Type: GrantFiled: May 10, 2011Date of Patent: June 24, 2014Inventor: Nader Sabry
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Patent number: 8709118Abstract: 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: January 10, 2013Date of Patent: April 29, 2014Assignee: 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: 8455088Abstract: The present disclosure relates to compounds from which nanofibers can be produced, the resulting nanofibers produced from the compounds, and nanofiber reinforced polymers prepared using the nanofibers and a polymer. The compounds used in forming the nanofibers include chemical linkage moieties that are capable of forming non-covalent bonds with portions of the polymer so as to form the nanofiber reinforced polymers. The nanofiber reinforced polymers are useful as biomaterials in medical devices.Type: GrantFiled: December 23, 2005Date of Patent: June 4, 2013Assignee: Boston Scientific Scimed, Inc.Inventors: Scott R. Schewe, Michele L. Zoromski, Liliana L. Atanasoska, Robert W. Warner
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Patent number: 8366797Abstract: 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: August 17, 2011Date of Patent: February 5, 2013Assignee: 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: 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: 8018059Abstract: An electrical interconnect includes an electrical pathway having a first member a second member, the first member being disposed at an oblique or perpendicular angle to the second member at a location adjacent to the second member, wherein at least one of the first member and the second member have a cross-sectional dimension of less than or equal to 10 micrometers.Type: GrantFiled: March 31, 2005Date of Patent: September 13, 2011Assignee: Xerox CorporationInventors: Joseph A. Swift, Stanley John Wallace
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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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Patent number: 7905872Abstract: An absorbent article may comprise a topsheet, a backsheet joined with the topsheet, an absorbent core interposed between the topsheet and backsheet; and one or more article elements selected from the group consisting of an anal cuff, an elasticized topsheet, a fastening system, a leg cuff, a waist elastic feature, a side panel, an ear, and combinations thereof. The article elements may comprise a slow recovery stretch laminate exhibiting an unload force at 37° C. of about 0.16 N/(g/m) or greater and a percent of initial strain after 15 seconds of recovery at 22° C. of about 10% or greater.Type: GrantFiled: June 3, 2005Date of Patent: March 15, 2011Assignee: The Procter & Gamble CompanyInventors: Robin Lynn McKiernan, Bryn Hird, Edward Joseph Urankar, Janet Neton
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Patent number: 7785701Abstract: The present invention provides a carbon fiber composite material comprising an elastomer and a carbon nanofiber dispersed in the elastomer, wherein the elastomer has an unsaturated bond or a group, having affinity to the carbon nanofiber. Also disclosed is a process for producing the carbon fiber composite material.Type: GrantFiled: April 9, 2004Date of Patent: August 31, 2010Assignee: Nissin Kogyo Co., Ltd.Inventors: Toru Noguchi, Shigeru Fukazawa, Shuichi Shimizu
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Patent number: 7754123Abstract: High performance filter media and manufacturing methodology provides nanofibers of diameter less than 1 ?m incorporated and processed into internal structure of a filter medium dominantly composed of coarse fibers of diameter greater than 1 ?m, to change the internal media structure.Type: GrantFiled: August 23, 2006Date of Patent: July 13, 2010Assignee: Fleetguard, Inc.Inventors: Barry M. Verdegan, Stephen L. Fallon, Byron A. Pardue, William C. Haberkamp
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Patent number: 7601655Abstract: The present invention is directed to an article of manufacture for drying or wiping a surface. In one embodiment, a two-layered article is described. In another embodiment a multiple layered article is described.Type: GrantFiled: September 27, 2003Date of Patent: October 13, 2009Assignee: Tactix LLCInventor: Daniel H. Katsin
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Patent number: 7578023Abstract: The present invention features a fabric useful for applying a chemical composition, such as a finishing or polishing composition, onto a substrate surface. Typically the fabric contains between about 1% and 50% stiff fibers and between about 50% and 99% adsorbent or absorbent fibers, more typically between about 2% and 10% stiff fibers and between about 90% and 98% adsorbent or absorbent fibers. The fabric can be used to make applicator pads useful, for example, as mop heads for spreading a finishing or polishing composition on a floor surface.Type: GrantFiled: September 20, 2004Date of Patent: August 25, 2009Assignee: 3M Innovative Properties CompanyInventor: Gary L. Olson
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Patent number: 7427575Abstract: A faced fibrous insulation having a mat facing on one or more surfaces of a fibrous insulation material is provided. The mat facing provides improved surface quality, high and controlled adhesion, and is easily manufactured. The mat facing of the present invention includes a pre-applied adhesive that is heat activated to provide adhesion to the fibrous insulation. The mat facing may be input into the glass fiber forming section of a fibrous insulation production line. Alternatively, the mat facing may be applied to the uncured pack prior to curing or applied to the cured fibrous insulation.Type: GrantFiled: June 2, 2004Date of Patent: September 23, 2008Assignee: Owens Corning Intellectual Capital, LLCInventor: Roy E. Shaffer
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Patent number: 7338915Abstract: This invention provides a method of making single-wall carbon nanotubes by laser vaporizing a mixture of carbon and one or more Group VIII transition metals. Single-wall carbon nanotubes preferentially form in the vapor and the one or more Group VIII transition metals catalyzed growth of the single-wall carbon nanotubes. In one embodiment of the invention, one or more single-wall carbon nanotubes are fixed in a high temperature zone so that the one or more Group VIII transition metals catalyze further growth of the single-wall carbon nanotube that is maintained in the high temperature zone. In another embodiment, two separate laser pulses are utilized with the second pulse timed to be absorbed by the vapor created by the first pulse.Type: GrantFiled: November 27, 2000Date of Patent: March 4, 2008Assignee: Rice UniversityInventors: Richard E. Smalley, Daniel T. Colbert, Ting Guo, Andrew G. Rinzler, Pavel Nikolaev, Andreas Thess
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Patent number: 7318853Abstract: 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: November 2, 2006Date of Patent: January 15, 2008Assignee: 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: 7318852Abstract: 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: April 6, 2006Date of Patent: January 15, 2008Assignee: 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: 7316723Abstract: 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: April 6, 2006Date of Patent: January 8, 2008Assignee: 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: 7290668Abstract: A bicomponent fiber wick is provided for use in processing an analyte fluid. The bicomponent fiber wick comprises a self-sustaining, fluid transmissive body comprising a plurality of bundled, crimped, bicomponent fibers bonded to each other at spaced apart contact points. Each bicomponent fiber has a fiber structure comprising a first fiber component formed from a polyamide material and a second fiber component. The fibers collectively define tortuous fluid flow paths through the fluid transmissive body, the fiber structure being configured for controlling flow of the analyte fluid through the fluid transmissive body with at least a portion of the first fiber component in contact with the analyte fluid.Type: GrantFiled: March 1, 2004Date of Patent: November 6, 2007Assignee: Filtrona Richmond, Inc.Inventors: Bennett Clayton Ward, David B. Harris, Jian Xiang, Thomas E. Harris, Jr.
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Publication number: 20070224419Abstract: An absorbent paper sheet for tissue or towel includes from about 99 percent to about 70 percent by weight of cellulosic papermaking fiber and from about 1 percent to about 30 percent by weight fibrillated regenerated cellulose microfiber which was regenerated form a cellulosic dope utilizing a tertiary amine N-oxide solvent or an ionic liquid.Type: ApplicationFiled: March 19, 2007Publication date: September 27, 2007Applicant: Georgia-Pacific Consumer Products LPInventors: Daniel W. Sumnicht, Bruce J. Kokko
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Patent number: 7270693Abstract: 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: January 16, 2006Date of Patent: September 18, 2007Assignee: 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: 7229683Abstract: In one aspect, the invention provides a method of making a thermal interface material comprising the steps of: (a) providing a polymeric hot melt pressure sensitive adhesive having a number average molecular weight of greater than 25,000; (b) melt-blending the polymer with at least 25 weight percent of a thermally conductive filler to form a mixture; and (c) forming the mixture of hot melt pressure sensitive adhesive and thermally conductive filler as a film. In another aspect, the invention may further comprise the steps of: providing a fire retardant and/or microfiber forming material; and/or irradiating the film with gamma or electron beam (E-beam) radiation or a combination of both to form a thermal interface material.Type: GrantFiled: May 30, 2003Date of Patent: June 12, 2007Assignee: 3M Innovative Properties CompanyInventors: Patrick J. Fischer, James J. Kobe, Cameron T. Murray
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Patent number: 7179317Abstract: 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: July 19, 2004Date of Patent: February 20, 2007Assignee: 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: 7132161Abstract: A fiber velvet comprising nano-size fibers or nanofibrils attached to micro-size fibers is disclosed. Methods of manufacturing the velvet as well as various uses of the velvet are also described. For example, the fiber velvet can be used as a thermal interface or as an adhesive material. The nanofibrils may be attached to a flat base or membrane, or may be attached to the tip portions of the micro-size or larger diameter fibers. Various attributes of the micro-size fibers and of the nano-size fibers, for example, geometry (e.g. size, length, packing density) material type (e.g. carbon, metal, polymer, or ceramic) and properties (e.g. conductivity, modulus, surface energy, dielectric constant, surface roughness) can be selected depending on the desired attributes of the fiber velvet. The nanofibrils have a diameter of less than about 1 micron, and may advantageously be formed from single walled and/or multi-walled carbon nanotubes.Type: GrantFiled: June 17, 2003Date of Patent: November 7, 2006Assignee: Energy Science Laboratories, Inc.Inventors: Timothy R. Knowles, Christopher L. Seaman
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Patent number: 7132126Abstract: A simple chemical technique has been developed to grow large quantity of carbon nanostructures, including carbon nanotubes, hydrocarbon nanotubes and carbon nanoonions, in the organic solution at ambient (room) temperature and atmospheric pressure using silicon nanostructures (nanowires, nanodots, ribbons, and porous silicon) as starting materials. These CNT and CNO have the lattice d-spacing from 3.4 ? to 5 ?.Type: GrantFiled: October 17, 2002Date of Patent: November 7, 2006Assignee: City University of Hong KongInventors: Shuit-Tong Lee, Chi-Pui Li, Xu-Hui Sun, Ning-Bew Wong, Chun-Sing Lee, Boon-Keng Teo
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Patent number: 7094270Abstract: The invention refers to a composite filter for filtering a stream of ambient air including at least one non-prebonded upstream tier and one non-prebonded downstream tier, wherein the ratio of absolute pore volume of upstream tier to downstream tier RAPV>2, and the absolute projected fiber coverage of upstream tier and of downstream tier APFC>95%. Further, the invention refers to a method of making such a composite filter including the steps of (a) laying down a filtration material onto a support to form the upstream non-prebonded tier, (b) depositing onto the upstream tier the downstream non-prebonded tier, and (c) bonding the tiers to form a composite filter having a unitary stratified structure.Type: GrantFiled: March 1, 2002Date of Patent: August 22, 2006Assignee: Airflo Europe N.V.Inventors: Jan Schultink, Bas Schultink
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Patent number: 7091140Abstract: A nonwoven fabric comprises continuous polymer filaments of 0.5-3 denier that have been hydroentangled in a complex matrix of interconnecting filament loops, and that is otherwise substantially free of knotting, or of otherwise wrapping about one another. A process for making a non-woven fabric comprises continuously extruding polymer filaments of 0.5-3 denier onto a moving support, pre-entangling the filaments with water jets, and entangling filaments with a second set of water jets. An apparatus for making a nonwoven fabric comprises means for continuously extruding substantially endless polymer filaments of 0.5-3 denier onto a moving support to form an unbonded web, a pre entangling station for entangling the web with a plurality of water jets, and a plurality of water jets for final entanglement of the filament web.Type: GrantFiled: April 7, 1999Date of Patent: August 15, 2006Assignee: Polymer Group, Inc.Inventors: Rick Ferencz, Michael Putnam, Jian Weng
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Patent number: 7090715Abstract: 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: September 30, 2003Date of Patent: August 15, 2006Assignee: 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: 7049254Abstract: Multiple component meltblown webs are disclosed in which the meltblown fibers include an ionomer on at least a portion of the peripheral surface thereof. The meltblown webs are especially useful in dust wipe applications.Type: GrantFiled: November 13, 2002Date of Patent: May 23, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Vishal Bansal, Sam Louis Samuels
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Patent number: 7022630Abstract: Nonwoven barrier laminates are provided having a desirable balance of properties, including barrier properties, strength, static dissipation, fluid repellency, aesthetics and tactile properties. The nonwoven barrier laminates of the invention generally include outer spunbonded layers, at least one hydrophobic microporous layer between the outer spunbonded layers, and at least one discrete layer of electrically conductive strands. A multiplicity of discrete bond sites bond the various layers of the nonwoven barrier laminate into a coherent fabric.Type: GrantFiled: October 22, 2003Date of Patent: April 4, 2006Assignee: BBA Nonwovens Simpsonville, Inc.Inventors: Mark Henry Samuel Berman, Samuel Charles Baer
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Patent number: 6994904Abstract: This invention is directed to a reinforced adhesive fiber that includes a pressure sensitive adhesive component and a reinforcing material within the pressure sensitive adhesive component.Type: GrantFiled: May 2, 2001Date of Patent: February 7, 2006Assignee: 3M Innovative Properties CompanyInventors: Eugene G. Joseph, Zhiming Zhou, Randy A. Hoff, Albert I. Everaerts, Wayne K. Dunshee, Mary L. Brown
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Patent number: 6924028Abstract: 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: September 30, 2003Date of Patent: August 2, 2005Assignee: 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: 6905752Abstract: Disclosed is a tape for polishing the surface of a substrate of a magnetic recording medium, and a thin-fineness filament obtained by dissolving a dissolving component of a dissolution-decomposition type composite yarn consisting of a nylon component and the dissolving component is used as piles of a flocked cloth, warps of a fabric, and webs of a nonwoven fabric. The polishing tape of the present invention can noticeably improve the surface roughness of the polished substrate.Type: GrantFiled: September 30, 1999Date of Patent: June 14, 2005Assignees: Kanebo, Limited, Kanebo Gohsen, LimitedInventors: Akira Ebihara, Shoichiro Noguchi, Keiji Nakanishi
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Patent number: 6903034Abstract: A nonwoven fabric comprises continuous polymer filaments of 0.5 to 3 denier that have been hydroentangled in a complex matrix for interconnecting filament loops, and that is otherwise substantially free of knotting, or of otherwise wrapping about one another. A process for making a nonwoven fabric comprises continuously extruding polymer filaments of 0.5 to 3 denier onto a moving support, pre-entangling the filaments with water jets, and entangling the filaments with a second set of water jets on a three-dimensional image transfer device. An apparatus for making a nonwoven fabric comprises means for continuously extruding substantially endless polymer filaments of 0.5 to 3 denier onto a moving support to form an unbonded web, a pre-entangling station for entangling the web with a plurality of water jets, and a plurality of water jets for final entanglement of the filament web on a three-dimensional image transfer device.Type: GrantFiled: December 30, 1999Date of Patent: June 7, 2005Assignee: Polymer Group, Inc.Inventors: Michael Putnam, Richard Ferencz, Marlene Storzer, Jian Weng
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Patent number: 6900148Abstract: A leather-like sheet material comprising a substrate layer composed of an entangled nonwoven fabric consisting of ultrafine fibers and an elastic polymer or elastomer filled therein and having, on one side (side A) of the substrate layer, a grain layer comprising an elastomer mainly consisting of a polyurethane, wherein the ultrafine fibers (a) constituting the side A of the substrate layer have a mean fineness substantially within the range of 0.01 to 0.5 decitex and the ultrafine fibers (b) substantially constituting the other side (side B) opposite to the side A of the substrate layer have a mean fineness of not more than ½ of the mean fineness of the ultrafine fibers (a).Type: GrantFiled: July 2, 2002Date of Patent: May 31, 2005Assignee: Kuraray Co., Ltd.Inventors: Hisao Yoneda, Yoshiki Nobuto, Kohei Hayashi
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Patent number: 6893711Abstract: The present invention relates an acoustical insulation material for sound attenuation containing a nonwoven web. Surprisingly, it has been discovered that an acoustical insulation material made from a nonwoven web of thermoplastic fibers having an average fiber diameter of less than about 7 microns, wherein the acoustical insulation has a thickness less than about 3 mm and a density of greater than about 50 kg/m3 is effective as a sound insulation material. The acoustical insulation is very effective as an acoustical insulation material, despite the low thickness and high density of the acoustical insulation. A method of attenuating sound waves passing from a sound source area to a second area using the acoustical insulation material is also disclosed.Type: GrantFiled: August 5, 2002Date of Patent: May 17, 2005Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Bruce Scott Williamson, Nina Frazier
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Patent number: 6800019Abstract: An abrasive ground fabric which is a composite ground fabric comprising a fiber substrate and a elastic polymer filled in the fiber substrate, wherein (1) the fiber substrate is composed of bundles, each consisting of 20 to 3,000 fine fibers, and (2) the average diameter (D1) of fine fibers existent in a center portion from the center of the cross section perpendicular to a lengthwise direction of each bundle to ½ of the radius of each bundle is 0.3 to 10 &mgr;m, the average diameter (D2) of fine fibers existent in a peripheral portion from ½ of the radius to the end of each bundle is 0.05 to 1 &mgr;m, and the D1/D2 ratio is 1.5 or more. According to the present invention, the abrasive ground fabric is suitably used for the texturing of a substrate in the production of a magnetic recording medium, particularly a hard disk, enables high-accuracy surface finish and has excellent strength.Type: GrantFiled: July 31, 2002Date of Patent: October 5, 2004Assignee: Teijin LimitedInventors: Manabu Tanaka, Yoshiyuki Suzuki, Shusuke Kitawaki, Masahisa Mimura
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Patent number: 6794351Abstract: Multipurpose cleaning articles are provided comprising a porous cleaning sheet containing an aqueous cleaning composition comprising (a) water as the major component; (b) 5% to 45% by weight water-immiscible solvent; (c) less than about 1.8% by weight emulsifier; and wherein the aqueous cleaning composition has a vertical wicking rate of about 1 cm/minute or more. The porous cleaning sheet can comprise any one of numerous materials, including hydrophobic materials, such as nonwoven webs, textile fabrics, foams and so forth. The cleaning articles are capable of removing water insoluble materials from various surfaces and including cleaning the skin and hands as well as hard surfaces.Type: GrantFiled: October 19, 2001Date of Patent: September 21, 2004Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Richard L. Shick, Ali Yahiaoui
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Publication number: 20040157037Abstract: The suede-finished leather-like sheet of the present invention comprises a fiber-entangled nonwoven fabric comprising a layer (I) made of a microfine fiber (A) having an average fineness of 0.5 dtex or less and a layer (II) made of a microfine fiber (B) having an average fineness equal to or less than that of the microfine fiber (A), and a polymeric elastomer impregnated in the fiber-entangled nonwoven fabric. The layers (I) and (II) are integrated by entanglement such that a ratio of the microfine fiber (A) to the microfine fiber (B) is 10/90 to 90/10 by mass. The surface of the layer (I) is a napped surface made mainly of a raised microfine fiber (A). The microfine fibers (A) and (B) are respectively formed by converting a microfine fiber-forming fiber (a) and a microfine fiber-forming fiber (b), each having an elongation at break and a tenacity of specific ranges, into microfine fibers.Type: ApplicationFiled: February 6, 2004Publication date: August 12, 2004Applicant: KURARAY CO., LTD.Inventors: Fumihiro Yamaguchi, Hisao Yoneda
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Patent number: 6756332Abstract: A headliner made from a laminate comprising a core layer sandwiched between two stiffening layers to form an I-beam construction that provides the necessary strength for the headliner. The core layer is preferably a blend of nonwoven fibers including some fine denier fibers to provide improved sound absorption properties. The stiffening layers also comprise a blend of nonwoven fibers. Both the core layer and the stiffening layers include some binder fibers to bond together the various fibers within each layer and the layers to each other.Type: GrantFiled: June 11, 2001Date of Patent: June 29, 2004Assignee: Jason IncorporatedInventors: Michael D. Sandoe, Michael G. Zimmer
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Patent number: 6737372Abstract: Disclosed is a powders-affixed nonwoven fabric prepared from a fiber web comprising powder materials and fine short fibers having a fiber diameter of 4 &mgr;m or less and a fiber length of 3 mm or less in a dispersed state in the powders-containing fiber web, the powders-containing fiber web being formed by a method other than a wet-laid method. Further, a process for manufacturing the powders-affixed nonwoven fabric, and a sheet material comprising the powders-affixed nonwoven fabric are also disclosed.Type: GrantFiled: December 6, 2001Date of Patent: May 18, 2004Assignee: Japan Vilene Company, Ltd.Inventors: Akinori Minami, Masaaki Kawabe
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Patent number: 6709759Abstract: The present invention relates to thermoplastic film structures having improved barrier and/or mechanical properties and methods for making the film structures. These improvements are achieved by incorporating into the thermoplastic film structures a polymeric nanocomposite comprising a polymer and nanosize particles of a modified clay.Type: GrantFiled: April 8, 2002Date of Patent: March 23, 2004Assignee: Pechiney Emballage Flexible EuropeInventors: Chad Mueller, Roger Kaas, Bertrand Fillon, Sandrine Tournier, Jean-Jacques Lerda
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Patent number: 6667254Abstract: New fibrous nonwoven webs are taught that comprise a mass of polyethylene terephthalate fibers that exhibit a double melting peak on a DSC plot: one peak is representative of a first molecular portion within the fiber that is in non-chain-extended crystalline form, and the other peak is representative of a second molecular portion within the fiber that is in chain-extended crystalline form and has a melting point elevated over that of the non-chain-extended crystalline form. Webs comprising fibers having such a morphology have a unique combination of durability and dimensional stability. The fibers are generally autogenously bonded at points of fiber intersection.Type: GrantFiled: November 20, 2000Date of Patent: December 23, 2003Assignee: 3M Innovative Properties CompanyInventors: Delton R. Thompson, Jr., David A. Olson, David C. Brownlee, Pamela A. Percha, Myles L. Brostrom