Plural Stretching Steps Or Stages Patents (Class 264/210.7)
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Patent number: 11898276Abstract: Carbon fiber and method of forming the same are provided. The method modifies proportion of a finishing oil to control a relation between a surface tension and a particle size of the finishing oil, and thus penetration of the finishing oil into an interior of the carbon fiber is avoided. Therefore, the carbon fiber can have both low oil residues and a high strength.Type: GrantFiled: May 27, 2022Date of Patent: February 13, 2024Assignee: FORMOSA PLASTICS CORPORATIONInventors: Kun-Yeh Tsai, Chia-Chi Hung, Wen-Ju Chou, Ching-Wen Chen, Chia-Chun Hsieh, Shi-Jie Lin, Long-Tyan Hwang
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Patent number: 11441242Abstract: The present invention provides a method for manufacturing a polyacetal fiber in which whiteness irregularity is improved. One embodiment of the present invention provides a method for manufacturing a polyacetal fiber, wherein the method includes a discharge step, a takeup step, a stretching step, and a winding step, the steps being continuously performed, an oxymethylene copolymer being used as the raw material of the polyacetal fiber, the oxymethylene copolymer having an oxymethylene unit and an oxyethylene unit, the content of the oxyethylene unit being 0.5-7.0 moles to 100 moles of the oxymethylene unit, the roller temperature of a stretching unit used in the stretching step being 130-155° C., and operation parameters of the method being set so as to satisfy a prescribed numerical formula.Type: GrantFiled: June 8, 2018Date of Patent: September 13, 2022Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Akira Ito, Daisuke Sunaga, Sunao Mikami
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Patent number: 11136696Abstract: A novel process is disclosed for extruding an absorbable glycolide/lactide block copolymer into multifilament suture fibers. The block copolymer preferably consists of about 50/50 mole % of Glycolide/Lactide in the center segment and the overall composition of the copolymer is about 90/10 mole % Glycolide/Lactide. The novel extrusion process comprises the steps of maintaining the temperatures of at least two, preferably three or more, of the extrusion zones in the range of about 5-50° C. below the polymer melting point. The multifilament suture made with the invention process from the segmented, glycolide-rich, poly(glycolide-co-lactide) copolymers of A-B-A type, where the B-segment is an amorphous prepolymer of glycolide and lactide in the molar ratio of about 50/50 glycolide/lactide, exhibit exceptionally high breaking strength retention (BSR) at 42 days post-implantation.Type: GrantFiled: November 8, 2018Date of Patent: October 5, 2021Assignee: Ethicon, Inc.Inventors: Gaoyuan Gavin Chen, Joseph Richard Vliet, Jr., Dominick Egidio
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Patent number: 11098443Abstract: A method for making a thermoinsulating padding, particularly for the cloth article and furniture fields, comprises the steps of: providing a lap by carding in bulk fibers comprising at least a thermobinding fiber; applying, by spraying or spreading, a low glass transition temperature resin, or a mixture of resins comprising at least a low glass transition temperature resin at least on a side of said lap only to the surface layers of said side; drying the resin coated lap in a drying oven to start a cross linking of said resins; actuating said low glass transition temperature resin (previously applied either individually or in a mixture with other resins) by pressure calendering under a controlled temperature, thereby providing a dynamically operating padding.Type: GrantFiled: April 23, 2013Date of Patent: August 24, 2021Assignee: FISI FIBRE SINTETICHE S.P.A.Inventors: Lucio Siniscalchi, Marciano Siniscalchi
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Patent number: 11097461Abstract: A battery packaging material including a laminate that is provided with a barrier layer, a heat-fusible resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on other surface side of barrier layer. This battery packaging material is configured from at least a laminate provided with a barrier layer, heat-fusible resin layer positioned on one surface side of barrier layer, and a polyester film positioned on other surface side of barrier layer. When infrared absorption spectrum on the polyester film's surface in 18 directions at intervals of 10° from 0°-180° is obtained using total reflection method of Fourier transform infrared spectroscopy, the ratio of the maximum value and the minimum value of the ratio (Y1340/Y1410) of the absorption peak intensity Y1340 in 1340 cm?1 and the absorption peak intensity Y1410 in 1410 cm?1 in the infrared absorption spectrum is in the range of 1.4-2.7.Type: GrantFiled: May 31, 2017Date of Patent: August 24, 2021Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Daisuke Yasuda, Rikiya Yamashita, Takanori Yamashita
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Patent number: 10896987Abstract: The present invention is a sealing sheet for a back surface of a solar cell comprising only one polyester film, wherein the polyester film is composed of at least the layer A and the layer B, or the layer A, the layer B and the layer C described below, wherein the polyester film has a given whiteness and a given average reflectance of the polyester film, a given acid value of the polyester, a given thickness of the whole polyester film, a given thickness of the A layer and the B layer, and a given content of the inorganic fine particles in the whole polyester film. Layer A: a polyester resin layer in which the content of the inorganic fine particles is 10 to 35% by mass Layer B: a polyester resin layer in which the content of the inorganic fine particles is 0 to 8% by mass, which is the smallest among the contents of the inorganic fine particles in the layer A, the layer B and the layer C Layer C: a polyester resin layer in which the content of the inorganic fine particles is 0.4 to 10% by mass.Type: GrantFiled: March 11, 2013Date of Patent: January 19, 2021Assignee: TOYOBO CO., LTD.Inventors: Yoshitomo Ikehata, Akira Shimizu, Jun Inagaki, Shinji Sawasaki, Ken Jibiki
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Patent number: 10835216Abstract: A bimodal spinneret system including the bimodal spinneret and method for making a surgical buttress having improved characteristics are disclosed. The bimodal spinneret includes at least a distribution of hole diameters to create fibers with a more heterogeneous shear history and die swell. The system and method of using the bimodal spinneret creates a melt blown non-woven fiber mat that is cut into a surgical buttress having unique fabric properties such as differentiated load deflection behavior, flexural stiffness, polymer fiber alignment, fiber crystallinity and subsequent strength retention during in vitro degradation not attainable with unimodal spinneret hole diameters.Type: GrantFiled: December 24, 2014Date of Patent: November 17, 2020Assignee: COVIDIEN LPInventors: Richard Stevenson, Seth Gleiman
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Patent number: 10619272Abstract: Disclosed is the preparation of improved high strength nylon staple fibers having a denier per filament of 1.0 to 3.0, a tenacity T at break of at least about 6.0, and a load-bearing capacity, T7, of greater than 3.2. Such nylon staple fibers are produced by preparing tows of relatively uniformly spun and quenched nylon filaments, drawing and annealing such tows via a two-stage drawing and annealing operation using relatively high draw ratios and then cutting or otherwise converting the drawn and annealed tows into the desired high strength nylon staple fibers. The nylon staple fibers so prepared can be blended with other fibers such as cotton staple fibers to produce nylon/cotton (NYCO) yarns which are also of desirably high strength.Type: GrantFiled: April 20, 2018Date of Patent: April 14, 2020Assignee: INVISTA North America S.a.r.l.Inventor: Douglas A. Bloom
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Patent number: 10570305Abstract: Various embodiments provided herein include a primer coating formulation that includes an aqueous dispersion comprising a metal salt and a copolymer of ethylene and one or more acid-based monomers. Also described are embodiments of an aqueous dispersion including a blend a co-binder and ethylene copolymerized with an acid-based monomer neutralized to form an ionomer. Embodiments provided herein also provide a method including applying to a substrate an aqueous dispersion comprising ethylene copolymerized with an acid-based monomer neutralized to form an ionomer.Type: GrantFiled: December 15, 2016Date of Patent: February 25, 2020Assignee: Michelman, Inc.Inventors: Talia McKinney Collins, Kenneth Scott Smallwood, Robert Turnbull
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Patent number: 10435225Abstract: Heat sealable food packaging films, methods for the production thereof, and food packages comprising heat sealable food packaging films are provided. The heat sealable food packaging film includes a humidity-dependent permeable film having a moisture vapor transmission rate that increases with an increase in relative humidity (RH). An outer coating comprises a coating material on at least one surface of the humidity-dependent permeable film. The coating material is selected from a nanoclay dispersed in a poly-vinylidene chloride (PVdC) polymer or a stretchable urethane polymer, a stretchable acrylic polymer, or a combination of stretchable urethane polymer and stretchable acrylic polymer. The coating material may further comprise an anti-blocking agent. The heat sealable food packaging film is biaxially oriented.Type: GrantFiled: October 12, 2016Date of Patent: October 8, 2019Assignee: AdvanSix Resins & Chemicals LLCInventors: Yuan-Ping Robert Ting, Simon J. Porter, Ken Guhse, Jeffrey D. Moulton
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Patent number: 10287415Abstract: The present invention relates to a plasticizer composition which comprises at least one cycloalkyl ester of saturated dicarboxylic acids and at least one terephthalic ester, to molding compositions which comprise a thermoplastic polymer or an elastomer and this plasticizer composition, and to the use of these plasticizer compositions and molding compositions.Type: GrantFiled: October 8, 2015Date of Patent: May 14, 2019Assignee: BASF SEInventors: Matthias Pfeiffer, Boris Breitscheidel, Axel Grimm, Herbert Morgenstern
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Patent number: 10029445Abstract: An environmentally-friendly composite foil that includes a first biocompostable and/or biorenewable cellulose-based film comprising a moisture barrier coating; a second biocompostable and/or biorenewable cellulose-based film comprising a thin metallized surface, disposed adjacent to the first biocompostable and/or biorenewable cellulose-based film, having a bio-adhesive disposed between the first biocompostable and/or biorenewable cellulose-based film and the second biocompostable and/or biorenewable cellulose-based film; and a third biocompostable and/or biorenewable film comprising a sugar and/or a corn-based film, disposed adjacent to the biocompostable and/or biorenewable cellulose-based second film.Type: GrantFiled: January 29, 2015Date of Patent: July 24, 2018Assignee: Lifestyles Healthcare Pte. Ltd.Inventors: KC Nguyen, Chayaporn Pongthanomsak, Phuttatida Tanjaroon, Chayapon Ngowprasert, Cauvathur Seethapathy Rajendran
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Patent number: 9935013Abstract: A semiconductor device with an increased effective gate length or an increased effective channel width, and a method of forming the same are provided. The effective gate length or the effective channel width of the device is increased by lowering a top surface of an oxide isolation structure below the gate of the semiconductor device.Type: GrantFiled: April 9, 2014Date of Patent: April 3, 2018Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Long-Jie Hong, Chih-Lin Wang, Kang-Min Kuo
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Patent number: 9732447Abstract: Disclosed is a high strength polyester fiber for a seat belt, and in particular, a polyester fiber for a seat belt, which has intrinsic viscosity of 0.8 to 1.5 dl/g, tensile strength of 8.8 g/d or more, and total fineness of 400 to 1800 denier. A method of preparing the fiber is disclosed. The polyester fiber includes filaments having high strength, low modulus, and high elongation to significantly lower shrinkage, while securing excellent mechanical properties, it is possible to manufacture a seat belt having excellent impact absorption and significantly improved abrasion resistance and heat resistant strength retention, even with a woven density of 260 yarns/inch or less.Type: GrantFiled: June 28, 2013Date of Patent: August 15, 2017Assignee: KOLON INDUSTRIES, INC.Inventors: Byoung-Wook An, Gi-Woong Kim, Seong-Young Kim, Young-Soo Lee
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Patent number: 9512314Abstract: Provided is a polyether polyamide composition including 100 parts by mass of a polyether polyamide in which a diamine constituent unit thereof is derived from a specified polyether diamine compound and a xylylenediamine, and a dicarboxylic acid constituent unit thereof is derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 20 carbon atoms, having blended therein from 0.01 to 15 parts by mass of at least one molecular chain extender selected from a carbodiimide compound and a compound containing two or more epoxy groups in a molecule thereof.Type: GrantFiled: August 12, 2013Date of Patent: December 6, 2016Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Kazuya Satou, Tomonori Katou, Jun Mitadera, Mayumi Takeo, Nobuhide Tsunaka
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Patent number: 9492987Abstract: A polyester film suitable for use in battery packages, particularly for use in deep drawn packages of lithium ion secondary batteries that includes an electrolyte (in a solid state or in a liquid state), and which is also suitable for use in packages of pharmaceutical products that have various shapes. The polyester film is characterized in that the stresses at 5% elongation (F5 values) and the stresses at 10% elongation (F10 values) of the film in the longitudinal direction and in the transverse direction at 25° C., respectively, satisfy (I) and (II): 1.5?F10MD/F5MD?1??(I) 1.5?F10TD/F5TD?1??(II).Type: GrantFiled: December 15, 2011Date of Patent: November 15, 2016Assignee: Toray Industries, Inc.Inventors: Isao Manabe, Teruya Tanaka, Kozo Takahashi
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Patent number: 9421704Abstract: There is provided a method for producing a molded product of which surface is modified by a functional material using a molding machine such as a general-purpose injection molding machine or extrusion molding machine. The method for producing the molded product includes: mixing a block copolymer having a hydrophilic segment with the functional material; mixing the block copolymer, which has been mixed with the functional material, with a thermoplastic resin; and molding the thermoplastic resin in which the functional material and the block copolymer are mixed.Type: GrantFiled: September 3, 2013Date of Patent: August 23, 2016Assignee: HITACHI MAXELL, LTD.Inventors: Atsushi Yusa, Satoshi Yamamoto, Tetsuya Ano, Hironori Ota, Masahiro Oshima
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Patent number: 9419266Abstract: This polyolefin resin porous film can be easily produced, and when used as a non-aqueous electrolyte cell separator, can suppress clogging and can evince a high cell output. The polyolefin resin porous film is a porous film having a polyolefin resin as the primary component and is characterized by the average flow diameter pressure (PAP) being 1500-2500 kPa, the bubble point pressure (PBP) being 300-1500 kPa, and the ratio (Pa/PAP) of the air permeability (Pa) and the bubble point pressure (PBP) being no greater than 0.35 sec/(100 ml·kPa).Type: GrantFiled: January 23, 2012Date of Patent: August 16, 2016Assignee: Mitsubishi Plastics, Inc.Inventors: Toru Terakawa, Takeyoshi Yamada, Yasushi Usami
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Patent number: 9186871Abstract: Pneumatic tire, the belt of which is reinforced by a multilayer laminate comprising at least one multiaxially drawn thermoplastic polymer film, such as for example a biaxially drawn PET film, placed between and in contact with two layers of rubber composition, such as natural rubber. Preferably, the thermoplastic polymer film has, irrespective of the tensile direction considered, a tensile modulus E which is greater than 500 MPa, a maximum tensile stress ?max which is greater than 80 MPa, and an elongation at break Ar greater than 40%. The above thermoplastic polymer film, placed between two layers of diene rubber compositions, can especially be used in the belt of pneumatic tires as a perforation-resistant protective film.Type: GrantFiled: April 6, 2010Date of Patent: November 17, 2015Assignees: Michelin Recherche et Technique S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventor: Christophe Le Clerc
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Patent number: 9132584Abstract: A polypropylene molded article has a crystallinity degree of 48% or more by wide-angle X-ray diffraction measurement. The half width of an orientation peak in an azimuth angular distribution obtained by wide-angle X-ray diffraction measurement on the polypropylene molded article is 5.5° or less, and the long period of the polypropylene molded article obtained by small-angle X-ray scattering measurement is 12 nm or more and 16 nm or less.Type: GrantFiled: October 27, 2014Date of Patent: September 15, 2015Assignee: PANASONIC CORPORATIONInventors: Motohiro Suzuki, Hironobu Machida, Hiromu Saito, Tsubasa Hosoi, Akira Yanagida
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Patent number: 9005501Abstract: The invention relates to a method and an apparatus for producing a film web made of thermoplastic material in which the thermoplastic material is extruded in at least one layer as plastic melt from a wide-slit nozzle in an extrusion direction and subsequently led away over at least roller, wherein tensile forces are exerted in the extrusion direction and transversely to the extrusion direction in order to stretch the film web longitudinally and transversely, wherein during application of the tensile forces in and transversely to the extrusion direction the film web has a temperature at least corresponding to the melting temperature of the same.Type: GrantFiled: August 14, 2012Date of Patent: April 14, 2015Assignee: Reifenhaeuser GmbH & Co. KG MaschinenfabrikInventors: Helmut Meyer, Jochen Hennes
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Patent number: 8993672Abstract: Polyolefin block and graft copolymers comprised of two or more semicrystalline polyolefin blocks or grafts and one or more amorphous polyolefin blocks can be blended with a low molecular weight fluid diluent that preferentially locates within and swells the amorphous domains of the block or graft copolymer, while preserving the crystallinity of the semicrystalline block domains. After mechanical or thermomechanical processing, such compositions combine softness with high strength and high recoverable elasticity. Compositions are also disclosed whereby the diluent species is removed from the composition, either before or after the mechanical or thermomechanical processing, in order to create a strong elastic material with an ultra-low entanglement density within the amorphous domains.Type: GrantFiled: April 8, 2008Date of Patent: March 31, 2015Assignee: The Regents of the University of CaliforniaInventors: Glenn H. Fredrickson, Edward J. Kramer, Zhigang Wang
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Patent number: 8986591Abstract: Disclosed are void-containing polyester shrink films which show excellent density retention upon exposures to high temperatures. The films have high shrinkage and retain their low density after processing under conditions of temperature and moisture used in typical recycling processes. The films are useful for sleeve label and other shrink film applications, and their lower density allows them to be readily separated from soft drink bottles, food containers and the like during recycling operations. Also disclosed is a process for void-containing polyester shrink films having high shrinkage and low density after exposure to elevated temperatures.Type: GrantFiled: August 6, 2010Date of Patent: March 24, 2015Assignee: Eastman Chemical CompanyInventors: Marcus David Shelby, Candace Michele Tanner, Mark Elliott Tincher, Rondell Paul Little, Jr.
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Patent number: 8968614Abstract: An extensible apertured nonwoven web, and a method for making such an apertured nonwoven web. In one embodiment the method comprises the steps of providing an apertured nonwoven web, incrementally stretching it in a direction substantially parallel to the cross machine direction, and applying tension in the machine direction such that the web width after applying tension is less than the web width after incremental stretching.Type: GrantFiled: December 29, 2005Date of Patent: March 3, 2015Assignee: The Procter & Gamble CompanyInventors: Fred N. Desai, Hiroshi Nakahata, John J. Curro, Douglas H. Benson
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Patent number: 8951456Abstract: A method for producing an ultra-high-molecular-weight polyethylene porous membrane, including: a step of molding a film using an ultra-high-molecular-weight polyethylene raw material; a step of biaxially stretching the obtained film in X-axis and Y-axis directions at a temperature of from a melting point of the film to 180° C.; and a pore-forming step of stretching the stretched film along at least one axis of the X-axis and Y-axis at from 142° C. to 170° C. Alternatively, a method for producing an ultra-high-molecular-weight polyethylene film, including: a step of molding a film by two steps of press-molding and roll-molding using an ultra-high-molecular-weight polyethylene raw material; and a step of biaxially stretching the film obtained in the above step, in X-axis and Y-axis directions at a temperature of from a melting point of the film to 180° C.Type: GrantFiled: August 31, 2011Date of Patent: February 10, 2015Assignee: National University Corporation Gunma UniversityInventors: Hiroki Uehara, Takeshi Yamanobe
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Publication number: 20140335423Abstract: The present invention provides a propylene-based resin microporous film which has excellent electrolyte solution retention property, and can provide a lithium ion battery in which a decrease in discharge capacity is highly reduced even after repeated charge and discharge. The propylene-based resin microporous film is a propylene-based resin microporous film having micropores, wherein a propylene-based resin having a weight average molecular weight of 250,000 to 500,000, a melting point of 160 to 170° C., and a pentad fraction of 96% or more is contained, the surface aperture ratio is 27 to 42%, the ratio of a surface aperture ratio to a porosity is 0.6 or less, and the degree of gas permeability is 50 to 400 s/100 mL.Type: ApplicationFiled: December 7, 2012Publication date: November 13, 2014Inventors: Shotaro Kobaru, Yuki Sakurai
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Patent number: 8858851Abstract: The present invention discloses a process for producing low-titer, high-strength and high-modulus polyethylene fibers, comprising the following steps: dissolving the ultra-high molecular weight polyethylene into paraffin oil with a low viscosity to form a spinning solution with a concentration of 3˜15%; extruding the spinning solution through a thin spinneret with at least 10 orifices having a diameter ? of 0.7˜0.8 mm and a length/diameter ratio of 10˜12, by applying a high pressure in the range of 2.5±1.0 MPa to the spinning solution, such that the fluid in the orifices is extruded at a shear rate of 200˜3 500 sec?1; and then performing a jet stretch at a deformation rate of 200˜5 000 min?1 within an air-gap of 10˜15 mm between the spinneret and the quench bath surface; feeding the jet-stretched fluid into the quench bath to form gel filaments; extracting and drying the gel filaments; and performing a multistage ultrahigh post stretch on the dried gel filaments with a stretch ratio of 15 or less.Type: GrantFiled: September 11, 2008Date of Patent: October 14, 2014Assignee: Hunan Zhongtai Special Equipment Co., Ltd.Inventors: Nianci Yang, Yuanjun Zhang, Bo Gao, Zhiquan Wu, Mingqing Lin, Chuanqing Wu, Yong Guo, Yunbo Zhou, Haijun Lin
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Publication number: 20140302263Abstract: The purpose of the present invention is to provide a polyamide fiber from which a fabric appropriate for use in airbags is obtainable, and which exhibits weave-loosening prevention properties after weaving thereof, and excellent mechanical properties. This polyamide fiber is characterized by having; a total fiber density of 100-700 dtex; a tensile strength of 8.0-11.5 cN/dtex; a boiling-water shrinkage of 4.0-11.0%; a slack recovery rate (A) represented by formula (1) after a fixed-length heat treatment of 0-4.0%; and a tightening index (F) represented by formula (2) of 3.8 or higher. A=[(Ta?Tb)/Ta]×100 (1) (In formula (1), Ta represents the amount of slack immediately after heat treatment, and Tb represents the amount of slack at the time of stabilization after heat treatment.) F=A+0.35×B (2) (In formula (2), A represents the slack recovery rate after the fixed-length heat treatment, and B represents the boiling-water shrinkage rate.Type: ApplicationFiled: December 7, 2011Publication date: October 9, 2014Inventors: Fumiaki Ise, Shingo Mizuno
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Patent number: 8852263Abstract: The use of nucleating agents to manufacture polymeric stents is disclosed. The resulting stents may have increased crystallinity, decreased crystal size, increased mechanical properties, and faster degradation times.Type: GrantFiled: July 12, 2012Date of Patent: October 7, 2014Assignee: Abbott Cardiovascular Systems Inc.Inventor: Yunbing Wang
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Patent number: 8845938Abstract: A method of manufacturing a polyacrylonitrile fiber includes a spinning process in which a spinning dope including polyacrylonitrile is spun; a first drawing process; a drying process; and a second hot drawing process in this order.Type: GrantFiled: November 28, 2011Date of Patent: September 30, 2014Assignee: Toray Industries, Inc.Inventors: Tomoko Ichikawa, Takashi Ochi, Akira Kishiro, Yasutaka Kato, Takashi Shibata, Masafumi Ise
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Patent number: 8840824Abstract: Single, continuous PTFE layers having lateral zones of varied characteristics are described. Some of the lateral zone embodiments may include PTFE material having little or no nodal and fibril microstructure. Methods of manufacturing PTFE layers allow for controllable permeability and porosity of the layers, in addition to other characteristics. The characteristics may vary from one lateral zone of a PTFE layer to a second lateral zone of a PTFE layer. In some embodiments, the PTFE layers may act as a barrier layer in an endovascular graft or other medical device.Type: GrantFiled: October 22, 2010Date of Patent: September 23, 2014Assignee: Trivascular, Inc.Inventors: Joseph W. Humphrey, Jeffry B. Skiba
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Patent number: 8808596Abstract: A biodegradable filament of polyglycolic acid resin having practical properties represented by high tensile strength and knot strength is produced. A polyglycolic acid resin having a residual monomer content of below 0.5 wt. % is melt-spun, quenched in a liquid bath of at most 10° C. and then stretched in a liquid bath of 60-83° C. to produce a polyglycolic acid resin filament having a tensile strength of at least 750 MPa and a knot strength of at least 600 MPa.Type: GrantFiled: February 17, 2010Date of Patent: August 19, 2014Assignee: Kureha CorporationInventors: Satoshi Hashimoto, Kazuyuki Yamane, Juichi Wakabayashi, Hirokazu Matsui
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Patent number: 8801985Abstract: A production method for a carbon fiber precursor fiber bundle and a production apparatus of the carbon fiber precursor fiber bundle. A carbon fiber precursor fiber bundle that has a degree of intermingle of 1 m?1 or less between small tows, consists of substantially straight fibers without imparted crimp, a tow of which straight fibers has a moisture content of less than 10% by mass when housed in a container, and has a widthwise dividing capability to maintain a form of a single aggregate of tows when housed in a container, taken out from the container and guided into a firing step, and to divide into a plurality of small tows in the firing step by the tension generated in the firing step.Type: GrantFiled: April 7, 2011Date of Patent: August 12, 2014Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Katsuhiko Ikeda, Atsushi Kawamura
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Patent number: 8790559Abstract: Provided is a method of manufacturing a microporous polyolefin film useable as a battery separator, which is easy to control strength, permeability and shrinking properties of the microporous film and embodies excellent quality uniformity and production stability in fabricating the microporous film.Type: GrantFiled: April 20, 2011Date of Patent: July 29, 2014Assignee: SK Innovation Co., Ltd.Inventors: Gwi Gwon Kang, Jang-Weon Rhee, In Hwa Jung
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Publication number: 20140205823Abstract: The present invention discloses a process for forming a biaxially oriented film. The process includes first selecting a polyolefin resin wherein said polyolefin resin comprises a linear low density polyethylene resin characterized by having from 9 to 35 weight percent of the total weight of linear low density polyethylene resin eluting from a CEF at a temperature greater than 97.0° C.; and further characterized by having a CDR of from 33 to 80 and a Mw Ratio of from 0.15 to 0.45. Next a film is formed from the polyolefin resin selected in the first step. Finally the film formed in the second step is oriented in a sequential manner. The films produced by this process are characterized by having an ultimate elongation at least 1.5 times greater in the MD as compared to the CD and the 2% secant modulus is a least 1.25 times greater in the CD as compared to the MD.Type: ApplicationFiled: August 26, 2011Publication date: July 24, 2014Applicant: Dow Global Technologies LLCInventors: Xiao Bing Yun, Rangjuan Cong, Jephrey Pan, Teresa P. Karjala
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Patent number: 8778247Abstract: The invention relates to a polymer film made of a polyamide composition comprising at least 80 weight percentage (wt. %) of a semi-crystalline semi-aromatic polyamide with a melting temperature (Tm) of at least 270° C., wherein the wt. % is relative to the total weight of the polymer composition, wherein the polymer film has an average coefficient of thermal expansion in plane in the temperature range of 20° C.-Tg, measured in plane with the method according to ASTM D969-08, of at most 40 ppm/K. The said film can be made from a polyamide moulding composition comprising said polyamide by film casting followed by biaxial stretching. The film has properties suitable for carrier films in flexible printed circuit boards.Type: GrantFiled: January 15, 2010Date of Patent: July 15, 2014Assignee: DSM IP Assets B.V.Inventors: Alexander Antonius Marie Stroeks, Guido Richard Struijk
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Publication number: 20140186606Abstract: Described are methods for producing a sequentially biaxially oriented thermoplastic film having balanced machine direction (MD) and transverse direction (TD) heat shrinkage properties. The methods can include extruding a film, orienting the extruded film in a machine direction, quenching the film, heating the film in an transverse orientation oven and transversely orienting the film, and allowing the film to relax in the machine direction at a machine direction tension lower than a machine direction tension of the film in the transverse orientation oven.Type: ApplicationFiled: December 31, 2013Publication date: July 3, 2014Applicant: TORAY PLASTICS (AMERICA), INC.Inventors: Douglas J. BOWER, Robert Thomas ERVOLINO
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Patent number: 8753555Abstract: Continuous processing methods for making absorbable polymeric films with one or more of the following properties: high toughness, low modulus, high tensile strength, and thickness less than 10 mm, more preferably less than 1 mm, and more preferably less than 100 ?m, have been developed. In the preferred embodiment, the polymer is a polyhydroxyalkanoate, and in the most preferred embodiment, the polymer comprises 4-hydroxybutyrate. A particularly preferred embodiment is a film of poly-4-hydroxybutyrate or copolymer thereof, wherein the film has a tensile strength greater than 5.5 kgf/mm2, tensile modulus less than 181 kgf/mm2, and elongation at break from 10-500%, wherein the film is derived by a continuous process such as melt extrusion or solvent casting, followed by orientation to more than 25% of the film's original length in one or more directions. These can be used for a variety of purposes including fabrication of medical devices.Type: GrantFiled: April 11, 2011Date of Patent: June 17, 2014Assignee: Tepha, Inc.Inventors: Said Rizk, David P. Martin, Kicherl Ho, Simon F. Williams
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Patent number: 8747713Abstract: Flexible tubular film (10) is helically cut into a flat strip by unwinding the tubular film in flattened form by a tumbling unwinder (1), advancing the flat film tube to a tube expansion zone (17) in which the flat tube is expanded into a circular cylindrical tube and is passed axially over a hollow mandrel (14) slightly lower in external diameter than the diameter of the expanded tube to be cut by knife (18) helically while on the mandrel into a flat strip that is removed at an angle to the mandrel axis. The flat tube is longitudinally stretched by stretching rollers (107-112), which tumble with the tumbling unwinder. The apparatus further comprises stabilization means for stabilizing the orientation applied by the tumbling stretching rollers, applied to the helically cut film strip after it has been drawn from the mandrel.Type: GrantFiled: July 22, 2009Date of Patent: June 10, 2014Inventors: Ole-Bendt Rasmussen, Nikolaj Wettergren Rasmussen
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Patent number: 8747715Abstract: Multi-filament UHMW PE yarns can be produced according to processes that result in improved properties. The UHMW PE can have an intrinsic viscosity in decalin at 135° C. of at least about 30 dl/g, and can be processed under optimal conditions to achieve a gel spun yarn having a tenacity of greater than about 45 g/d (40.5 g/dtex).Type: GrantFiled: April 30, 2010Date of Patent: June 10, 2014Assignee: Honeywell International IncInventors: Thomas Y. Tam, John A. Young, Norman Aminuddin, John E. Hermes
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Patent number: 8728372Abstract: Thin PTFE layers are described having little or no node and fibril microstructure and methods of manufacturing PTFE layers are disclosed that allow for controllable permeability and porosity of the layers. In some embodiments, the PTFE layers may act as a barrier layer in an endovascular graft or other medical device.Type: GrantFiled: October 29, 2010Date of Patent: May 20, 2014Assignee: TriVascular, Inc.Inventors: Joseph W. Humphrey, Jeffrey B. Skiba
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Publication number: 20140130867Abstract: A polyester film has excellent resistance to hydrolysis, excellent heat resistance in high temperatures and low humidity, and mechanical strength. The polyester film satisfies a stress heat resistant coefficient f(125)?3 and a wet thermo retention (=100×S(120)/S(0)) of 30% or more. f(125) is a value obtained by substituting t=125° C. in an approximation represented by f(t); t represents a temperature (° C.) at thermo processing; f(t) represents a stress heat resistant coefficient f at the thermo temperature t and represents an approximation to a straight line obtained by linear approximation by a least squares method of values plotted from a relationship between the thermo temperature t and a logarithm (log T(t)) of time T at which a rupture stress is 50% when t is 150° C., 160° C., 170° C., or 180° C.; T(t) is a time (hr) at which the maximum stress in a tensile test after thermo processing at t° C.Type: ApplicationFiled: January 31, 2014Publication date: May 15, 2014Applicant: FUJIFILM CORPORATIONInventors: Kiyokazu HASHIMOTO, Yohei ARITOSHI
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Publication number: 20140113132Abstract: A bio-based polyester thin film substrate for thermal transfer printing ribbon. The bio-based polyester thermal transfer ribbon substrate film has a radiocarbon content of at least 12 pMC. The film exhibits excellent uniformity, handling, and processability, substantially equivalent to petroleum-based counterparts, while being derived wholly or partly from non-petroleum sources.Type: ApplicationFiled: December 23, 2013Publication date: April 24, 2014Applicant: TORAY PLASTICS (AMERICA), INC.Inventors: Stefanos L. SAKELLARIDES, Milan William MOSCARITOLO
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Publication number: 20140103568Abstract: Multi-filament UHMW PE yarns can be produced according to processes that result in improved properties. The UHMW PE can have an intrinsic viscosity in decalin at 135° C. of at least about 30 dl/g, and can be processed under optimal conditions to achieve a gel spun yarn having a tenacity of greater than about 45 g/d (40.5 g/dtex).Type: ApplicationFiled: April 30, 2010Publication date: April 17, 2014Applicant: Honeywell International Inc.Inventors: THOMAS Y. TAM, John A. Young, Norman Aminuddin, John E. Hermes
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Patent number: 8685305Abstract: The invention aims at providing a heat-shrinkable polyester film which is excellent in tearability along perforations and in break resistance after storage when used as labels of beverage bottles. The invention relates to a heat-shrinkable polyester film which is made of a polyester resin comprising ethylene terephthalate as the main constituent and containing at least 13 mol % of at least one monomer capable of forming an amorphous component in the whole polyester resin component and which has specific heat shrinkage characteristics and exhibits specific mechanical characteristics after heat shrinking treatment. The film can be produced by a sequential biaxial orientation process comprising longitudinal orientation step, intermediate heat treatment step, positive cooling step, transverse orientation step, and final heat treatment step.Type: GrantFiled: September 24, 2008Date of Patent: April 1, 2014Assignee: Toyo Boseki Kabushiki KaishaInventors: Masayuki Haruta, Masatoshi Hashimoto, Masakazu Iwasaki, Katsuhiko Nose
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Patent number: 8673451Abstract: An oriented multilayer structure for shrink applications having a polymeric layer, a tie layer adhered to said polymeric layer. The tie layer is made up of the reaction product of a live, grafted polyolefin and an olefin elastomer. The multilayer structure is oriented and the tie layer provides strong adhesion to barrier layers even at high orientation levels.Type: GrantFiled: August 26, 2011Date of Patent: March 18, 2014Assignee: Equistar Chemicals, LPInventor: Maged G. Botros
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Patent number: 8663786Abstract: Disclosed is a polyester film for optical applications, and more specifically to a polyester film having refractive index of 1.6 to 1.7 and a film having refractive index of 1.4 to 1.6 on both surfaces of the polyester film, wherein a thickness of each coating layer is 0.03 to 0.1 ?m and total light transmittance of the entire film is 93% or more. The polyester film according to the embodiment has total light transmittance higher than the polyester film without the coating layer and is more suitable to use the polyester film for optical applications due to the excellent adhesive strength between the polyester film and layer for the post-processing working.Type: GrantFiled: March 31, 2009Date of Patent: March 4, 2014Assignee: Kolon Industries, Inc.Inventors: Sang-Hyun Baek, Han Soo Park, Hong Hee Jung, Si Min Kim
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Patent number: 8628848Abstract: A filmic label including a face material having a front side, a reverse side and an adhesive layer including pressure sensitive adhesive on the reverse side of the face material. The face material includes at least one surface layer on at least one side of at least one central layer. The at least one central layer includes cavities that have been initiated at initiation sites by stretching the face material in a longitudinal direction and in a cross direction. The cavities have been expanded in a thickness direction of the face material by allowing a gaseous substance to have an effect on the at least one central layer. Also a method for forming a plastic film for a filmic label.Type: GrantFiled: June 2, 2008Date of Patent: January 14, 2014Assignee: UPM Raflatac OyInventors: Håkan Saxen, Martti Vähälä, Tom Saxberg
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Patent number: 8623245Abstract: A colored high strength polyethylene fiber, preparation method and use thereof are provided, which are in the high molecular material field. The surface of said high strength polyethylene fiber is chromatic, grey or black. The strength of said high strength polyethylene fiber is 15-50 g/d, its modulus is 400-2000 g/d. The product of the present invention is colored, so it can be well applied to civil and military field. The preparation method of present invention has some advantages that technological process is simple, production efficiency is high, cost of production is low, performance of made fiber is excellent, and use-cost is reduced, compared with the prior art.Type: GrantFiled: July 14, 2008Date of Patent: January 7, 2014Assignee: Shandong ICD High Performance Fibres Co., Ltd.Inventor: Yi Ren
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Patent number: 8617445Abstract: The present invention provides a process for producing an oriented thermoplastic polyester resin sheet which is excellent in tensile strength, tencile modulas and heat resistance, and a light laminate-molded body using the same, which has a low linear expansion coefficient and is excellent in impact resistance, durability, easiness of handling, productivity, and others. A process for producing an oriented thermoplastic polyester resin sheet, which includes: pultrusion-drawing a thermoplastic polyester resin sheet in an amorphous state at a temperature from the glass transition temperature of the thermoplastic polyester resin ?20° C. to the glass transition temperature of the thermoplastic polyester resin +20° C.; and then drawing the resultant uniaxially at a temperature higher than the temperature for the pultrusion-drawing. A laminate-molded body, wherein a thermoplastic resin layer is laminated on each of the surfaces of the resultant oriented thermoplastic polyester resin sheet.Type: GrantFiled: February 17, 2006Date of Patent: December 31, 2013Assignee: Sekisui Chemical Co., Ltd.Inventors: Shigeru Ogasawara, Hirotsugu Yoshida, Hisashi Eguchi, Ryuichi Matsuo