Producing Composite Strand, Filament, Or Thread Patents (Class 264/172.11)
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Patent number: 12102973Abstract: The disclosure provides three-dimensional crosslinked polymer networks comprising one or more channels extending from the surface and/or near the surface of the network into the interior of the network, arrays comprising the networks, processes for making the networks, and uses of the networks and arrays.Type: GrantFiled: July 15, 2022Date of Patent: October 1, 2024Assignee: Safeguard Biosystems Holdings Ltd.Inventors: Holger Klapproth, Sonja Bednar
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Patent number: 12029832Abstract: A cardiac patch for treatment of a mammalian heart including perfusable vessels embedded integratedly between two layers of anisotropically oriented myocardial fibers. The cardiac patch is made using a dual 3D bioprinting technique using stereolithography to form an anisotropic construct and extrusion printing to form perfusion vessels. A nutrient and oxygen containing media can be provided within the perfusion vessels for growth of cells in the cardiac patch. The technique permits larger patches to be made for the treatment of cardiac damage in both small and large mammalian hearts.Type: GrantFiled: April 10, 2020Date of Patent: July 9, 2024Assignee: The George Washington UniversityInventors: Haitao Cui, Lijie Grace Zhang, Yimin Huang
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Patent number: 10916384Abstract: The present disclosure relates to a fibrous electrode and a supercapacitor including the same. In the fibrous electrode, a carbon nanotube sheet is spirally wound on a surface of an elastic fiber. Thus, the fibrous electrode may maintain a fiber shape, and an electrical connection structure in the carbon nanotube sheet may not be damaged by deformation of the elastic fiber. That is, the fibrous electrode may be reversibly changed to maintain excellent electrical conductivity. In addition, the fibrous electrode has a fiber shape having a diameter of hundreds of micrometers, and thus the fibrous electrode may be light and may have excellent durability and excellent life span characteristics.Type: GrantFiled: August 31, 2018Date of Patent: February 9, 2021Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Seon Jeong Kim, Chang Soon Choi, Kang Min Kim
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Patent number: 10615508Abstract: A thermoplastic resin composition capable of providing a molded article that is excellent in its capability of shielding millimeter waves. A thermoplastic resin composition for a molded article having a capability of shielding millimeter waves, containing (A) a thermoplastic resin and (B) carbon long fibers having a fiber length of from 3 to 30 mm in an amount of from 0.5 to 5% by mass. A molded article obtained from the composition is excellent in its capability of shielding millimeter waves and can be used as a protective member for a transmitting and receiving antenna of a millimeter wave radar.Type: GrantFiled: April 24, 2014Date of Patent: April 7, 2020Assignee: DAICEL POLYMER LTD.Inventors: Hiroshi Katayama, Koji Nishikawa
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Patent number: 10583090Abstract: The present invention provided for a novel process of forming silk fibroin gels, and controlling the rate of ?-sheet formation and resulting hydrogelation kinetics, by vortex treatment of silk fibroin solution. In addition, the vortex treatment of the present invention provides a silk fibroin gel that may be reversibly shear-thinned, enabling the use of these approach for precise control of silk self-assembly, both spatially and temporally. Active agents, including biological materials, viable cells or therapeutic agents, can be encapsulated in the hydrogels formed from the processes, and be used as delivery vehicles. Hence, the present invention provide for methods for silk fibroin gelation that are useful for biotechnological applications such as encapsulation and delivery of active agents, cells, and bioactive molecules.Type: GrantFiled: February 12, 2016Date of Patent: March 10, 2020Assignee: Trustees of Tufts CollegeInventors: David L. Kaplan, Tuna Yucel
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Patent number: 10280940Abstract: The present application is concerned with a blading structure of a compressor of an axial turbomachine for an aircraft. The blading structure includes a wall, such as a composite internal shroud with an organic matrix, which is intended to radially delimit a primary annular flow of the turbomachine and which comprises a fastening socket. The structure additionally has a blade fastened in the fastening socket and extending radially with respect to the wall, and a fastening layer at the interface between the blade and the socket. The interface includes asperities hugging the fastening layer, so as to ensure anchoring by engagement of material in order to fasten the blade in the socket by bonding. The present application also proposes a low-pressure compressor with an internal shroud with sockets bonded to blades.Type: GrantFiled: May 19, 2016Date of Patent: May 7, 2019Assignee: SAFRAN AERO BOOSTERS SAInventor: Jean-François Cortequisse
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Patent number: 10150088Abstract: Disclosed is a statistical copolymer that includes both zwitterionic repeat units and hydrophobic repeat units and a filtration membrane that contains a selective layer formed of the statistical copolymer. Also disclosed are methods of preparing the above-described filtration membrane.Type: GrantFiled: November 7, 2014Date of Patent: December 11, 2018Assignee: Tufts UniversityInventors: Ayse Asatekin Alexiou, Prity Bengani
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Publication number: 20150123304Abstract: A nonwoven web material including fibers formed of a polyolefin and a polyester is disclosed. The fibers may include fine fibers produced by, for example, a meltblowing process. The polyolefin may be polypropylene and the polyester may be polylactic acid. The polylactic acid may be obtained and included by recycling scrap nonwoven material containing a polylactic acid component, hydrolyzing the polylactic acid component to reduce its viscosity, blending the hydrolyzed polylactic acid with a polyolefin resin, and melt-spinning the blended material to form fibers. A related process is disclosed.Type: ApplicationFiled: November 1, 2013Publication date: May 7, 2015Applicant: The Procter & Gamble CompanyInventors: Arman Ashraf, Ronald Thomas gorley
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Publication number: 20150093572Abstract: A graphene fiber and a preparation method thereof, where the graphene fiber is a composite fiber of metal nanowire doped graphene fiber, and principal components of the composite fiber are graphene and metal nanowires, a mass ratio of metal nanowires is 0.1%-50%, the graphene is in a form of sheet, and both the metal nanowires and graphene sheets are arranged in parallel along an axial direction of the graphene fiber. The metal nanowire doped graphene fiber is a new type of a high performance multi-functional fiber material, which achieves a significant improvement in electrical conductivity of graphene fibers through doping of metal nanowires and meanwhile demonstrates excellent tensile strength and toughness. The metal nanowire doped graphene fiber has great potential application value in a plurality of fields, for example, it is used as a lightweight flexible wire.Type: ApplicationFiled: December 3, 2014Publication date: April 2, 2015Inventors: Xiaosong ZHOU, Yan XU, Chao GAO, Zhen XU
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Patent number: 8986808Abstract: An artificial turf is disclosed having a base and a plurality of synthetic fibers attached to and extending upward from the base, the fibers comprising a chlorin-based organic colorant and the colorant reflects infrared radiation in the range of 700 to 1,100 nm.Type: GrantFiled: August 3, 2011Date of Patent: March 24, 2015Inventors: Milo George, Randolph S. Reddick
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Patent number: 8951633Abstract: Disclosed herein are bicomponent fibers comprising first and second polymer components present in distinct portions of the cross section of the filament, wherein the first polymer component of the filaments is partially crystalline and serves as the matrix component of the filaments and the second polymer component of the filament is amorphous and serves as the binder component of the filaments, and wherein the fibers exhibit a single melting peak as evidenced by a differential scanning calorimetry (DSC) trace. Also disclosed herein are methods of making bicomponent fibers and nonwoven fabrics.Type: GrantFiled: January 11, 2013Date of Patent: February 10, 2015Assignee: Fiberweb, Inc.Inventors: Gregory W. Farell, Edward Keith Willis
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Publication number: 20150037095Abstract: A method for manufacturing a profiled section made of a thermally insulating composite material. A thermoset matrix is injected into an injection box where continuous natural fiber rovings circulate. The continuous natural fiber rovings and a portion of the thermoset matrix are pultruded. The natural fiber volume ratio is between 50 and 70% and a natural fiber mass ratio is between 55 and 75%. During the injection step, the ratio of natural fibers can be adapted so that the composite material has a conductivity of less than 0.30. The continuous natural fiber rovings can be twisted before the steps of injecting and pultruding. Preferably, during the twisting step, a number of turns per meter of between 10 and 30 is transmitted to the continuous natural fiber rovings.Type: ApplicationFiled: March 16, 2012Publication date: February 5, 2015Applicant: INNOBATInventor: Michel Maugenet
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Patent number: 8940132Abstract: The present invention relates to a process for the manufacture of structural hybrid thermoplastic composites where organic and inorganic fibers are well dispersed in a thermoplastic matrix. The process comprises defibrillating the organic fibers with or without the presence of surface active agents using a mixer at a high shear and at a temperature lower than the decomposition temperature of organic fibers and melting point of the surface active agents to separate the hydrogen bonded fibers and generate microfibers, followed by blending and dispersion of the organic fibers in the thermoplastic matrix to produce a fiber composite, followed by further blending and dispersion of the fiber composite with inorganic fibers at a low shear to get the moldable hybrid composite, followed by extrusion, injection or compression-injection molding. Low shear mixing maintains the inorganic fiber length.Type: GrantFiled: September 21, 2007Date of Patent: January 27, 2015Inventors: Mohini M. Sain, Suhara Panthapulakkal, Shiang F. Law
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Patent number: 8932714Abstract: A method for controlling a particle diameter and a particle diameter distribution of emulsion particles during manufacturing of an emulsion dispersion is provided. The method includes causing two or more types of liquids substantially immiscible with each other to continuously and sequentially pass through net bodies. The net bodies are disposed in a cylindrical flow passage at intervals of 5 to 200 mm, and the number of the net bodies is more than 50 and 200 or less. Each of the net bodies is equivalent to a gauze having a mesh number of 35 mesh to 4000 mesh in accordance with an ASTM standard and has a surface that intersects the direction of the flow passage. An emulsification apparatus used for the method includes a feed pump for feeding two or more types of liquids substantially immiscible with each other; and a cylindrical flow passage to which the two or more types of liquids fed by the feed pump are delivered.Type: GrantFiled: October 1, 2008Date of Patent: January 13, 2015Assignee: Nippon Oil CorporationInventors: Toshikatsu Shoko, Yasuo Togami, Akira Takagi, Hideko Hayashi
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Patent number: 8932501Abstract: The present invention concerns processes for reducing water in never-dried fiber comprising copolymer derived from the copolymerization of para-phenylenediamine, 5(6) -amino-2-(p-aminophenyl)benzimidazole; and terephthaloyl dichloride, the process comprising the steps of: (a) heating the never-dried fiber to a temperature of at least 20° C. but less than 100 ° C. until the moisture content of the fiber is 20 weight percent or less of the fiber; and (b) further heating the fiber to a temperature of at least 350° C.Type: GrantFiled: January 13, 2012Date of Patent: January 13, 2015Assignee: E I du Pont de Nemours and CompanyInventors: Steven R. Allen, Christopher William Newton
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Patent number: 8920693Abstract: A method for the production of a fiber-reinforced, thermoplastic polymer, wherein at least one fiber strand is fed into an extrusion die, wherein the fiber strand is fanned out in the extrusion die, wherein the impregnation of the fiber strand with a polymer melt takes place in the fanned out state, and subsequently the fiber strand impregnated with a polymer melt is extracted from the extrusion die.Type: GrantFiled: February 1, 2012Date of Patent: December 30, 2014Assignee: Universität KasselInventors: Andrej Bledzki, Maik Feldmann, Adam Jaszkiewicz, Sebastian Ossadnik
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Publication number: 20140332999Abstract: A method of separating strands of a slit web is disclosed. The method includes providing a slit web having a length in a machine direction and running the slit web in the machine direction onto a stretchable surface. The slit web includes multiple strands provided by a plurality of slits extending in a first direction not parallel to a cross-machine direction. The slit web is in contact with the stretchable surface for a path length in the machine direction, and for at least a portion of the path length, the stretchable surface is stretching in the cross-machine direction. The traction between the slit web and the stretchable surface during the stretching at least partially separates at least some of the multiple strands of the slit web in a second direction transverse to the first direction. A method of increasing a width of a polymeric netting is also disclosed.Type: ApplicationFiled: May 10, 2013Publication date: November 13, 2014Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Neal C. Rothwell, Peter J. Bugeja, Thomas J. Gilbert, Kristopher K. Biegler, Mark A. Peltier, Ryan M. Luepke, Steven J. Perron, Timothy J. Diekmann
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Patent number: 8834780Abstract: A polymer fiber is formed by hydrodynamic spinning. Fluids are forced to flow through a conduit to form a laminar flow comprising three or more layers of generally coaxial fluid flows, at respective flow rates selected to define a cross-section of a tubular middle layer of the fluid flows. The middle layer comprises a cross-linkable polymer precursor. Another layer of the fluid flows comprise a cross-linking agent. The polymer precursor, cross-linking agent and fluids are selected to prevent substantial diffusion of the polymer precursor away from the middle layer, and to allow a portion of the cross-linking agent to diffuse from the another layer into the middle layer to facilitate cross-linking of the polymer precursor in the middle layer to form a tubular polymer layer in a polymer fiber. The polymer layer thus has a cross-section generally corresponding to the cross-section of the middle layer.Type: GrantFiled: March 2, 2009Date of Patent: September 16, 2014Assignee: Agency for Science, Technology and ResearchInventors: Jackie Y. Ying, Min Hu, Rensheng Deng, Karl Schumacher, Motoichi Kurisawa
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Patent number: 8808594Abstract: A method is disclosed for producing a coform fibrous materials comprising the steps of supplying a first fiber forming stream comprising a first phase comprising a polymer melt and a second phase comprising a pressurized gas to a two-phase flow nozzle, supplying a separate second stream containing at least one secondary material to the two-phase flow nozzle, combining the first fiber forming stream and the second stream to form a composite fiber forming stream and fibrillating the composite fiber forming stream into a coform fibrous web. Superabsorbent and filtration coform fibrous materials for filtration and produced using the method are also disclosed.Type: GrantFiled: January 6, 2014Date of Patent: August 19, 2014Assignee: Verdex Technologies, Inc.Inventors: Larry Marshall, Michael Bryner, Gary Huvard
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Patent number: 8800136Abstract: Insulated electrically conductive fibers or microwires of sizes on the order of 1 mil (25 microns) diameter, so as to be suitable for processing into yarns or multi-microwire bundles, for example, for incorporation into conformable fabric products or for use as wearable electronic circuitry are made by coprocessing a core of a lower-melting-point metal within a sheath of a higher-melting-point polymer.Type: GrantFiled: September 27, 2010Date of Patent: August 12, 2014Assignee: Pascale Industries, Inc.Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Patent number: 8802002Abstract: A method for making a bonded nonwoven fibrous web comprising extruding melt blown fibers of a polymeric material, collecting the melt blown fibers as an initial nonwoven fibrous web, annealing the initial nonwoven fibrous web with a controlled heating and cooling operation, and collecting the dimensionally stable bonded nonwoven fibrous web is described. The bonded nonwoven fibrous web shrinkage is typically less than 4 percent relative to the initial nonwoven fibrous web.Type: GrantFiled: December 28, 2006Date of Patent: August 12, 2014Assignee: 3M Innovative Properties CompanyInventors: Michael R. Berrigan, John D. Stelter, Ruth A. Ebbens, Sian F. Fennessey
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Patent number: 8771570Abstract: One embodiment of a method for producing a plurality of nanostructures embedded in a host comprising the steps of: assembling a first preform, drawing said first preform into a first fiber, cutting said first fiber into a plurality of pieces, assembling said pieces of said first fiber into a second preform, and drawing said second preform into a second fiber. The host is made of a low thermal conductivity material such as a polymer or combination of polymers. The host can assume the form of a plurality of nanotubes which further reduces the host's thermal conductivity due to enhanced phonon scattering. The host can exhibit anisotropic thermal conductivity which reduces its thermal conductivity perpendicular to the direction in which it was drawn. The nanostructure-host composite can be cut into pieces and assembled into efficient thermoelectric devices for use in cooling or electric power generation applications. Other embodiments are described and shown.Type: GrantFiled: May 15, 2010Date of Patent: July 8, 2014Assignee: Nanotron, Inc.Inventor: Nathan David Hiller
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Patent number: 8753741Abstract: A fine denier poly(trimethylene arylate) spun drawn fiber is characterized by high denier uniformity. A process for preparing uniform fine denier yarns at spinning speeds of 4000 to 6000 m/min is further disclosed. The poly(trimethylene arylate) fiber hereof comprises 0.1 to 3% by weight of polystyrene dispersed therewithin. Fabrics prepared therefrom are also disclosed.Type: GrantFiled: October 7, 2011Date of Patent: June 17, 2014Assignee: E I du Pont de Nemours and CompanyInventor: W. Douglas Bates
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Patent number: 8673192Abstract: Apparatus and methods for fabricating food items include extruding a first hot plastic food mass through multiple passages and co-extruding a second hot plastic food mass through a feed stem received in each of the multiple passages and through nozzles. Each nozzle includes a first portion in communication with the feed stem but not the passage and a second portion in communication with the passage but not the feed stem. The nozzles are rotatable in gearing relation with the drive gear of a servomotor. The co-extruded ropes are conveyed at a linear speed rate less than or equal to the discharge speed from the nozzles, cooled, and cut into individual pieces in the form of peelably separable strands.Type: GrantFiled: March 18, 2013Date of Patent: March 18, 2014Assignee: General Mills, Inc.Inventors: James N Weinstein, James M Olive, Peter A Huberg, Laurie Burgess, Thomas Leuhrs, Jennifer M Mcaab
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Patent number: 8668854Abstract: The disclosure relates to an apparatus and method for producing nanofibers and non-woven nanofibrous materials from polymer melts, liquids and particles using a two-phase flow nozzle. The process comprises supplying a first phase comprising a polymer melt and a second phase comprising a pressurized gas stream to a two-phase flow nozzle; injecting the polymer melt and the pressurized gas stream into a mixing chamber within the two-phase flow nozzle wherein the mixing chamber combines the polymer flow and pressurized gas into a two-phase flow; distributing the two-phase flow uniformly to a converging channel terminating into an channel exit wherein the converging channel accelerates the two-phase flow creating a polymeric film along the surface of the converging channel and fibrillating the polymeric film at the channel exit of the converging channel in the form of a plurality of nanofibers.Type: GrantFiled: June 6, 2013Date of Patent: March 11, 2014Assignee: Verdex Technologies, Inc.Inventors: Larry Marshall, Michael Bryner
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Patent number: 8652386Abstract: The present invention is a nanoparticle mixture or suspension or nanofluid comprising nonmagnetically sensitive nanoparticles, magnetically sensitive nanoparticles, and surfactant(s). The present invention also relates to methods of preparing and using the same.Type: GrantFiled: September 15, 2011Date of Patent: February 18, 2014Assignees: Georgia Tech Research Corporation, South Dakota Board of RegentsInventors: Haiping Hong, G. P. “Bud” Peterson
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Publication number: 20140027944Abstract: A die and a method for impregnating fiber rovings (142) with a polymer resin (214) are disclosed. The die includes a manifold assembly (220), an impregnation zone, and a gate passage (270). The manifold assembly flows the resin (214) therethrough, and includes a plurality of branched runners (222). The impregnation zone is in fluid communication with the manifold assembly, and is configured to impregnate the roving with the resin. The gate passage (270) is between the manifold assembly and the impregnation zone (250), and flows the resin from the manifold assembly such that the resin coats the roving. The method includes flowing a polymer resin through a manifold assembly. The method further includes coating at least one fiber roving with the resin, and traversing the coated roving through an impregnation zone to impregnate the roving with the resin. The roving is under a tension of from about 5 Newtons to about Newtons within the impregnation zone.Type: ApplicationFiled: April 12, 2011Publication date: January 30, 2014Applicant: Ticona LLCInventors: Timothy L. Tibor, Timothy A. Regan, Aaron H. Johnson
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Patent number: 8545971Abstract: A multi-component article comprising a first component comprising a biodegradable polymer, and a second component comprising a polyolefin and a reactive modifier. A method of preparing a multi-layer film comprising coextruding first and second film layers, wherein the first layer comprises a polylactic acid and the second layer comprises a polyolefin and an epoxy-functionalized polyolefin. A method of preparing a multi-component fiber comprising coextruding a core component and a sheath component, wherein the core component comprises a polyolefin and an epoxy-functionalized polyolefin and the sheath component comprises a polylactic acid.Type: GrantFiled: June 30, 2008Date of Patent: October 1, 2013Assignee: Fina Technology, Inc.Inventors: Fengkui Li, Tim J. Coffy, Michel Daumerie
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Patent number: 8518178Abstract: Disclosed is: a single crystalline silicon carbide nanofiber having improved thermal and mechanical stability as well as a large specific surface area which is applicable to a system for purifying exhaust gas, silicon carbide fiber filter, diesel particulate filter having a high temperature stability and may be used in the form of nanostructures such as nanorods and nanoparticles.Type: GrantFiled: January 24, 2011Date of Patent: August 27, 2013Assignee: Korea Institute of Science and TechnologyInventors: Il Doo Kim, Seung Hun Choi, Seong Mu Jo, Jae-Min Hong
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Patent number: 8490283Abstract: A method of manufacturing a hollow fiber spinning nozzle in which supply bores and a nozzle structure connected to these and having a mass discharge opening and a needle with a coagulation agent bore are formed in a base body. At least two plate-shaped bodies structured by means of micro-structure technology are joined together to form the base body.Type: GrantFiled: June 27, 2008Date of Patent: July 23, 2013Assignee: Fresenius Medical Care Deutschland GmbHInventors: Torsten Keller, Jens-Holger Stahl
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Patent number: 8470221Abstract: A method for making a carbon nanotube composite wire structure comprises the following steps. A supply unit, a collecting unit, and a wrapping unit are provided. The wrapping unit comprises a hollow rotating shaft, and a face plate mounted on the hollow rotating shaft. A linear structure is provided by the supply unit. The linear structure passes through the hollow rotating shaft and is fixed on a collecting unit. A carbon nanotube structure is drawn from a carbon nanotube array. The carbon nanotube array is loaded on the face plate. One end of the carbon nanotube structure is adhered to the linear structure. The face plate is rotated, and the linear structure is pulled along a fixed direction. As such the carbon nanotube structure is wrapping around the linear structure.Type: GrantFiled: December 30, 2010Date of Patent: June 25, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Yang Wei, Shou-Shan Fan
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Patent number: 8444895Abstract: Disclosed are water-dispersible fibers derived from sulfopolyesters having a Tg of at least 25° C. The fibers may contain a single sulfopolyester or a blend of a sulfopolyester with a water-dispersible or water-nondispersible polymer. Also disclosed are multicomponent fibers comprising a water dispersible sulfopolyester having a Tg of at least 57° C. and a water non-dispersible polymer. The multicomponent fibers may be used to produce microdenier fibers. Fibrous articles may be produced from the water-dispersible fibers, multicomponent fibers, and microdenier fibers. The fibrous articles include water-dispersible and microdenier nonwoven webs, fabrics, and multilayered articles such as wipes, gauze, tissue, diapers, panty liners, sanitary napkins, bandages, and surgical dressings. Also disclosed is a process for water-dispersible fibers, nonwoven fabrics, and microdenier webs.Type: GrantFiled: December 13, 2010Date of Patent: May 21, 2013Assignee: Eastman Chemical CompanyInventors: William Alston Haile, Scott Ellery George, Wesley Raymond Hale, Waylon Lewellyn Jenkins
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Patent number: 8444896Abstract: Disclosed are water-dispersible fibers derived from sulfopolyesters having a Tg of at least 25° C. The fibers may contain a single sulfopolyester or a blend of a sulfopolyester with a water-dispersible or water-nondispersible polymer. Also disclosed are multicomponent fibers comprising a water dispersible sulfopolyester having a Tg of at least 57° C. and a water non-dispersible polymer. The multicomponent fibers may be used to produce microdenier fibers. Fibrous articles may be produced from the water-dispersible fibers, multicomponent fibers, and microdenier fibers. The fibrous articles include water-dispersible and microdenier nonwoven webs, fabrics, and multilayered articles such as wipes, gauze, tissue, diapers, panty liners, sanitary napkins, bandages, and surgical dressings. Also disclosed is a process for water-dispersible fibers, nonwoven fabrics, and microdenier webs.Type: GrantFiled: December 13, 2010Date of Patent: May 21, 2013Assignee: Eastman Chemical CompanyInventors: William Alston Haile, Scott Ellery George, Wesley Raymond Hale, Waylon Lewellyn Jenkins
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Patent number: 8435908Abstract: Disclosed are water-dispersible fibers derived from sulfopolyesters having a Tg of at least 25° C. The fibers may contain a single sulfopolyester or a blend of a sulfopolyester with a water-dispersible or water-nondispersible polymer. Also disclosed are multicomponent fibers comprising a water dispersible sulfopolyester having a Tg of at least 57° C. and a water non-dispersible polymer. The multicomponent fibers may be used to produce microdenier fibers. Fibrous articles may be produced from the water-dispersible fibers, multicomponent fibers, and microdenier fibers. The fibrous articles include water-dispersible and microdenier nonwoven webs, fabrics, and multilayered articles such as wipes, gauze, tissue, diapers, panty liners, sanitary napkins, bandages, and surgical dressings. Also disclosed is a process for water-dispersible fibers, nonwoven fabrics, and microdenier webs.Type: GrantFiled: December 13, 2010Date of Patent: May 7, 2013Assignee: Eastman Chemical CompanyInventors: William Alston Haile, Scott Ellery George, Wesley Raymond Hale, Waylon Lewellyn Jenkins
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Publication number: 20130099408Abstract: The present invention provides nonwoven webs comprising multicomponent fibers that enable the nonwoven web to possess high extensibility. The multicomponent fibers will comprise a first component comprising a polypropylene composition having a melt flow rate of from about 100 to about 2000 grams per 10 minutes and a second component comprising a polymer composition having a melt flow rate lower than the melt flow rate of the first component. The first component comprises at least about 10% of a surface of the multicomponent fiber.Type: ApplicationFiled: December 11, 2012Publication date: April 25, 2013Applicant: THE PROCTER & GAMBLE COMPANYInventor: The Procter & Gamble Company
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Patent number: 8398906Abstract: The invention pertains to a method for making a polymer-additive composite particle from a dope by jet spinning the dope to obtain a pulp, fibril or fibrid, wherein the solvent of the dope is selected from N-methyl-2-pyrrolidone, N,N?-dimethylformamide, N,N?-dimethylacetamide, tetramethylurea, and 4 to 75 wt % of a composition consisting of 2 to 95 wt % of a para-aramid polymer and 5-98 wt % of a solid additive material, to a total of 100 wt %, and wherein the aramid polymer is dissolved in the solvent; or coagulating the dope by means of a rotor-stator apparatus in which the polymer solution is applied through the stator on the rotor so that the precipitating polymer-additive composite particle is subjected to shear forces while they are in a plastic deformable stage.Type: GrantFiled: March 28, 2008Date of Patent: March 19, 2013Assignee: Teijin Aramid B.V.Inventors: Anton Johannes Josef Hendriks, Mirjam Ellen Oldenzeel, Johannus Maria Bergmans, Tetsuya Akamatsu
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Publication number: 20120270111Abstract: Polyolefin woven and nonwoven fibers, filaments and fabrics made therefrom which comprise a melt blend which comprises (a) a polyolefin; and (b) at least one compound of the formula (I) R1-(hydrophilic oligomer) ??(I) wherein R1 is a straight or branched chain alkyl of 22 to 40 carbon atoms and the hydrophilic oligomer is a homo- or co-oligomer consisting of monomer units derived from monomers selected from the group consisting of ethylene oxide, propylene oxide, ethylene glycol, propylene glycol, epichlorhydrin, acrylic acid, methacrylic acid, ethylene imine, caprolactone, vinyl alcohol and vinyl acetate; and wherein the hydrophilic oligomer consists of between 2 and 10 monomer units, exhibit excellent durable wettability. The fabrics are useful in disposable diapers, training pants, feminine napkins, tampons, incontinence care products, wet and dry wipes, wound dressings, surgical capes, filter medial, battery separators and the like.Type: ApplicationFiled: June 14, 2012Publication date: October 25, 2012Applicant: TECHMER PM, LLCInventors: Sheng-Shing Li, Andrew J. Leggio, George H. Menzie, David Devore, John J. McNamara, TaHau Yu, Douglas W. Horsey
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Patent number: 8246886Abstract: A method and system for aligning nanotubes within an extensible structure such as a yarn or non-woven sheet. The method includes providing an extensible structure having non-aligned nanotubes, adding a chemical mixture to the extensible structure so as to wet the extensible structure, and stretching the extensible structure so as to substantially align the nanotubes within the extensible structure. The system can include opposing rollers around which an extensible structure may be wrapped, mechanisms to rotate the rollers independently or away from one another as they rotate to stretch the extensible structure, and a reservoir from which a chemical mixture may be dispensed to wet the extensible structure to help in the stretching process.Type: GrantFiled: July 9, 2008Date of Patent: August 21, 2012Assignee: Nanocomp Technologies, Inc.Inventors: David S. Lashmore, Robert Braden, Anastasios John Hart, John Welch
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Patent number: 8241024Abstract: A system for forming a spun bond nonwoven web from extruded polymer filaments includes a spinneret including a plurality of orifices to extrude a plurality of continuous polymeric filaments, and a pressure quench chamber including a top located proximate and below the spinneret and bounded peripherally by surfaces. The quench chamber includes an ingress opening extending substantially across the width of a top of the quench chamber to receive filaments from the spinneret and a chamber exit nozzle extending substantially across the width of a bottom of the quench chamber.Type: GrantFiled: August 10, 2011Date of Patent: August 14, 2012Inventor: Perry Hartge
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Patent number: 8225641Abstract: A self-cleaning humidity sensor based on Mg2+/Na+-doped TiO2 nanofiber mats is provided. Examples show the response and recovery characteristic curves for ten circles with the RH changing from 11% to 95%. The nanofibers are manufactured by mixing together a metal salt comprising titanium, a magnesium compound, a sodium compound, and a high molecular weight material to form a mixture, electrospinning the mixture to form composite nanofibers, and calcining the composite nanofibers to yield a TiO2 nanofiber material doped with magnesium and sodium.Type: GrantFiled: August 20, 2009Date of Patent: July 24, 2012Assignee: Headwaters Technology Innovation, LLCInventors: Ce Wang, Hongnan Zhang, Zhenyu Li, Wei Zheng, Wei Wang, Changkun Liu, Bing Zhou
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Patent number: 8211341Abstract: The present disclosure is directed generally to synthetic organic fiber pellets, methods for making such pellets, and methods of using such pellets for making fiber reinforced polypropylene composite resins. The synthetic organic fiber pellets include at least 80 wt % of a synthetic organic fiber chosen from polyalkylene terephthalates, polyalkylene naphthalates, polyamides, polyolefins, polyacrylonitrile, and combinations thereof, and from 2 to 20 wt % of one or more waxes. The synthetic organic fiber pellets are produced using a pelleting press process.Type: GrantFiled: November 14, 2008Date of Patent: July 3, 2012Assignee: ExxonMobil Research and Engineering CompanyInventor: Arnold Lustiger
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Patent number: 8192677Abstract: A process is provided for extruding a partially crystalline melt-fabricable perfluoropolymers. The process comprises blow molding from a perfluoropolymer having polytetrafluoroethylene sub-micrometer particles dispersed therein. The perfluoropolymer composition is a core/shell polymer, with pelletized blend, a dispersion blend or a melt-mixed polymer.Type: GrantFiled: December 5, 2008Date of Patent: June 5, 2012Assignee: E. I. du Pont de Nemours and CompanyInventors: Ralph Munson Aten, Sharon Ann Libert, Heidi Elizabeth Burch
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Patent number: 8178020Abstract: A fiber is produced comprising polymers of differing types which are not admixed during production. The differing polymer types are heated to the point of softening in a vertically-oriented crucible and a fiber comprising the polymers in positions corresponding to their positions in the crucible is drawn from an orifice at the lower end of the crucible.Type: GrantFiled: July 18, 2008Date of Patent: May 15, 2012Assignee: Pascale Industries, Inc.Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Patent number: 8066922Abstract: In the production of elongate plastic profiles (10), which usually takes place by the pultrusion process, the cured plastic profile (10) emerging from a die (14) is pulled through the stationary die (14) by a take-off device. This process only makes it possible to produce straight plastic profiles (10). The invention envisages producing curved plastic profiles (10) by using a die (14) corresponding to the curvature of the plastic profile (10). For moving the cured part of the plastic profile (10) out of the die (14), it is provided that the die (14) is moved back step by step in relation to the stationary plastic profile (10) counter to the direction of production (19). In order that the plastic profile (10) remains stationary in relation to the die (14) as this takes place, it is securely held outside the die (14) by a holding means (20) during the moving back of the die (14).Type: GrantFiled: March 12, 2008Date of Patent: November 29, 2011Assignee: Thomas GmbH + Co. Technik + Innovation KGInventors: Klaus Jansen, Dietmar Weidler, Marian Hoffmann
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Patent number: 8048513Abstract: This invention relates to improved plexifilamentary sheet material useful in protective apparel and filtration media, which material is comprised of substantially continuous polyethylene plexifilamentary fiber strands and has a Frazier Permeability, normalized to 1.0 oz/yd2 basis weight, of at least 2 cfm/ft2.Type: GrantFiled: June 28, 2010Date of Patent: November 1, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Robert Anthony Marin, Larry R. Marshall, Barbara K. O'Rourke
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Patent number: 8021584Abstract: Blending of thermoplastic polyester with fiber-forming polyamide in the production of melt-colored melt-spun fibers results in improved color strength and aesthetics, and dimensional stability.Type: GrantFiled: January 23, 2004Date of Patent: September 20, 2011Assignee: Universal Fibers, Inc.Inventors: Matthew B. Studholme, Arthur Roth, Jr., Brendan Francis McSheehy, Jr.
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Patent number: 8017662Abstract: A process for producing a synthetic fiber composition with reclaimed post consumer carpet yarn, wherein face yarn is shaved from post consumer carpet using a shaving device to provide shaved face yarn, the shaved face yarn is reduced in size, contaminants are removed using mechanical screeners, the shave face yarn is melt filtered, and then fiber spun.Type: GrantFiled: May 29, 2008Date of Patent: September 13, 2011Assignee: Universal Fibers, Inc.Inventors: George Taylor Hoover, Jr., Milton Keith Roark, Brendan Francis McSheehy, Jr., Matthew Benjamin Studholme
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Patent number: 8003034Abstract: A method and apparatus are provided for forming a composite structure with an automatic placement head, through the use of a non-rotating tooling tablet having first and second substantially oppositely facing surfaces thereof, joined around the peripheries thereof by a side surface of the tablet, with at least one of the first or second surfaces forming a tool surface of the tablet. Layers of pre-impregnated fiber or tape are applied to the tool surface of the tablet by the automated fiber placement head.Type: GrantFiled: April 21, 2005Date of Patent: August 23, 2011Assignee: Ingersoll Machine Tools, Inc.Inventors: Tino Oldani, Daniel Jarvi
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Publication number: 20110201242Abstract: Provided is a fiber for detecting a target, a method of preparing the fiber for detecting the target, a method of detecting the target in a sample, a fiber complex including the fiber for detecting the target, and a kit including the fiber for detecting the target. The fiber may include a polymer, a target detecting material, and a metal nanoparticle, wherein the target material and the metal nanoparticle are fixed to the polymer. The method of preparing a fiber may include preparing a composition that includes a polymer, a target detecting material, and a metal nanoparticle and spinning the composition to prepare the fiber.Type: ApplicationFiled: August 25, 2010Publication date: August 18, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Jae-hyun Hur, Jong-jin Park, Hyung-bin Son, Jae-do Nam
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Patent number: 7998375Abstract: Fiber-reinforced composite posts are produced having high strength and high radiopacity. In a method of manufacturing the fiber-reinforced composite posts, fibers are pulled through filled resin and heat is applied at various steps in the process to provide high strength and optimal radiopacity.Type: GrantFiled: November 29, 2007Date of Patent: August 16, 2011Assignee: Pentron Clinical Technologies, LLCInventors: Ajit Karmaker, Mike Karlak, Weitao Jia