Biaxial Or Transverse To Travel Direction Patents (Class 264/290.2)
  • Patent number: 10471688
    Abstract: The invention provides a film comprising at least two layers, a first layer and a second layer; and wherein the first layer is formed from a first composition comprising a polyester and/or a polylactic acid; and wherein the second layer is formed from a second composition comprising at least the following: A) a functionalized ethylene-based polymer, and B) at least one ethylene/alkylacrylate copolymer.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 12, 2019
    Assignees: Dow Global Technologies LLC, Dow Brasil Indú´stria e Comércio de Produtos Químicios Ltda.
    Inventors: Eva-Maria Kupsch, Didem Oner-Deliormanli, Marlos Giuntini De Oliveira, Ashish Batra
  • Patent number: 10239680
    Abstract: A laminated sheet or a container includes: an absorbing layer absorbing at least one of liquid and gas; a reinforcing layer laminated on the absorbing layer with an adhesive layer interposed therebetween; an aluminum layer laminated on the reinforcing layer with an adhesive layer interposed therebetween; and a barrier layer laminated on the aluminum layer with an adhesive layer interposed therebetween and suppressing entry of at least one of liquid and gas.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: March 26, 2019
    Assignee: KYODO PRINTING CO., LTD.
    Inventors: Shinichi Koizumi, Hikaru Yamamoto, Tatsuya Ogawa
  • Patent number: 10232546
    Abstract: A filament winding system includes a storage unit that stores in advance a reference shape of a winding object, and winding conditions including a winding position and a winding angle at which a fiber is wound around the winding object having the reference shape, a guide that is movable relative to the winding object, and feeds the fiber onto the winding object, a rotating device that rotates the winding object, such that the fiber fed from the guide is wound around the winding object, a measuring unit that measures a shape of the winding object, and a controller. When there is a difference between the reference shape stored in the storage unit, and the measured shape of the winding object, the controller corrects the winding conditions so as to reduce or eliminate the difference, and controls the guide according to the corrected conditions.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: March 19, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomoyoshi Kobayashi
  • Patent number: 10180597
    Abstract: The invention provides a liquid crystal display device, as well as a polarizer and a protective film suitable for the liquid crystal display device. The liquid crystal display device comprises a backlight light source, two polarizers, and a liquid crystal cell disposed between the two polarizers; the backlight light source being a white light-emitting diode light source; each of the two polarizers comprising a polarizing film and protective films laminated on both sides of the polarizing film; at least one of the protective films being a polyester film having an adhesion-facilitating layer; the polyester film having a retardation of 3,000 to 30,000 nm; and the adhesion-facilitating layer comprising a polyester resin (A) and a polyvinyl alcohol resin (B).
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: January 15, 2019
    Assignee: TOYOBO CO., LTD.
    Inventors: Kouichi Murata, Mitsuharu Nakatani, Yasushi Sasaki
  • Patent number: 10175494
    Abstract: Provided is a polarizer whereby screen brightness does not become zero regardless of the direction in which a viewer faces when the polarizer is used in a liquid crystal display device capable of displaying three-dimensional images, in which three-dimensional images are visible through a polarizing filter. The polarizer comprises a polarizing film and protective films disposed on both sides of the polarizing film; at least one of the protective films being an oriented film; and the tilt of the orientation axis or an axis orthogonal to the orientation axis of the oriented film relative to the polarization axis of the polarizing film being 1° or more and less than 45°.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: January 8, 2019
    Assignee: TOYOBO CO., LTD.
    Inventors: Kouichi Murata, Yoshitomo Ikehata
  • Patent number: 9969899
    Abstract: Disclosed is a copolymer film that includes a first comonomer including a chlorofluoro olefin and a second comonomer that is selected from the group consisting of itaconic acid, 2,3-dihydropyran, D-glucal, glycerine carbonate vinyl ether, 2-hydroxypropyl acrylate, maleic anhydride, vinylidene chloride, and mixtures thereof.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: May 15, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Alagappan Thenappan, Bruno Ameduri, Gerald Lopez, Eric Rainal, Noureddine Ajellal, Gary Martin
  • Patent number: 9944043
    Abstract: An incrementally activated laminate that includes an incrementally activated fibrous web and a film having alternating first and second regions and a laminate of the film and an extensible fibrous web. The first region of the film includes a first polymeric composition, and the second regions include an elastic polymeric composition that is more elastic than the first polymeric composition. In the incrementally activated laminate, the distance between midpoints of two first regions separated by one second region is smaller than the activation pitch, and the first regions are not plastically deformed. In the extensible laminate, a tensile elongation at maximum load of the film is up to 250 percent of the tensile elongation at maximum load of the extensible fibrous web. Methods of making the laminates are also described.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: April 17, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas P. Hanschen, William H. Sikorski, Jr., Ronald W. Ausen, Paul S. Wallis, Vathsala Rajagopal, William J. Kopecky
  • Patent number: 9798189
    Abstract: Provided is a liquid crystal display device that has excellent visibility while using a protective film comprising a polyester film. The liquid crystal display device comprises a backlight light source, and a liquid crystal cell disposed between two polarizers; the backlight light source being a white light-emitting diode; each of the polarizers comprising a polarizing film and protective films laminated on both sides of the polarizing film; and at least one of the protective films being a polyester film having a retardation of 3,000 to 30,000 nm.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: October 24, 2017
    Assignee: Toyobo Co., Ltd.
    Inventors: Koichi Murata, Yasushi Sasaki
  • Patent number: 9751364
    Abstract: A multilayer laminate, which is usable as a reinforcing element for a finished article or for a semifinished product made of rubber, such as a tire, includes at least one polymer film having, in any tensile direction in the film's plane, a Young's modulus that is greater than 500 MPa. The film is positioned between and in contact with two layers formed of a rubber composition, such as natural rubber. Each layer formed of the rubber composition exhibits, in a crosslinked state, a secant modulus that, in extension at 10% elongation, is greater than 30 MPa, with between 30 and 150 MPa being preferable for the secant modulus.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: September 5, 2017
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Jean-Michel Huyghe, Christophe Le Clerc, Aline Riou, Anne-Lise Thuilliez
  • Patent number: 9163139
    Abstract: An extended film and a manufacturing method thereof are provided. The extended film includes a poly(lactic acid) and a block copolymer, wherein the block polymer includes a first block, a second block and a third block that connected with each other by chemical bonds. The extended film is formed by steps of mixing poly(lactic acid) and the block copolymer to form a mixture, compressing the mixture to form a board body and extending the board body to form an extended film, thereby forming an extended film having properties of high thermal-resistance and high transparency, the film thus obtained is applicable for packaging use.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: October 20, 2015
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chien-Pang Wu, Jyh-Horng Wu, Kuo-Chen Shih, Chi-Yuan Hung, Chia-Hao Li, Yao-Zu Wu, Chuh-Yung Chen
  • Patent number: 9023262
    Abstract: The invention provides a method of manufacturing a polymeric implantable medical device using gel extrusion of high molecular weight polymers or charge-induced orientation to avoid heat degradation of the polymer that might occur during conventional heat extrusion.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: May 5, 2015
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Bin Huang, David C. Gale
  • Patent number: 8993075
    Abstract: A stretched film comprised of a “B1” layer comprised of a thermoplastic resin 1, an “A” layer comprised of a styrene-based resin, and a “B2” layer comprised of a thermoplastic resin 2 stacked in that order and having a width of over 1000 mm, wherein a ratio of the “A” layer in the stretched film is 45 wt % or less, an average value of an orientation angle ? with respect to a width direction across at least 1000 mm of the width direction is 0°±1°, a variation in orientation angle ? is 0.5° or less, and a value of an Nz coefficient is ?3.5 to ?0.5 in range.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: March 31, 2015
    Assignee: Zeon Corporation
    Inventor: Tadashi Takizawa
  • Patent number: 8986830
    Abstract: The invention relates to a sealable, biaxially oriented polyester film comprising a base layer B, a sealable cover layer A, and a non-sealable cover layer C. The invention further relates to a method for producing the film and to the use thereof.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: March 24, 2015
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Matthias Konrad, Bodo Kuhmann, Gottfried Hilkert, Herbert Peiffer
  • Patent number: 8968614
    Abstract: 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: Grant
    Filed: December 29, 2005
    Date of Patent: March 3, 2015
    Assignee: The Procter & Gamble Company
    Inventors: Fred N. Desai, Hiroshi Nakahata, John J. Curro, Douglas H. Benson
  • Patent number: 8945703
    Abstract: The invention relates to a polyester film incorporating at least one UV stabilizer of the formula I, in which R1 is hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, heterocycloalkyl, aryl, or heteroaryl, and R2 is a moiety which contains at least one ?-electron system, which contains a carbon atom and at least one further atom selected from carbon, oxygen, and nitrogen, where the moiety R2 contains at least one atom different from carbon, where the film includes at least one further UV absorber which does not correspond to the formula I. The invention further relates to a process for producing the film, and also to articles formed from the film.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: February 3, 2015
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Holger Kliesch, Oliver Klein, Andreas Bork, Ingo Fischer
  • Patent number: 8926305
    Abstract: A dispensing mechanism that deploys a roll of web material having slit cuts and expands it into a web with a cellular structure. This is accomplished by mounting the roll of unexpanded web material on an axle that is positioned at a first angle to a guide wheel assembly. That first angle is not perpendicular to the direction of deployment. The material moves through the guide wheel assembly longitudinally in such a way that tension is applied at a second angle to the direction of deployment. This diagonal tension causes the web material to expand and form cells. Single axle as well as multi-axle systems are disclosed. In this way, a plurality of rolls of web material may be deployed and expanded as a single unit.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: January 6, 2015
    Assignee: KUCHARCO Corporation
    Inventors: Matthew J. Kuchar, David M. Kuchar
  • Patent number: 8916080
    Abstract: A biaxially oriented laminate film including a core layer including a blend of crystalline polylactic acid polymer and an inorganic antiblock particle which is biaxially oriented at low transverse direction orientation temperatures to impart a degree of cavitation around the particles such that a matte or opaque appearance is obtained. The laminate film may further have additional layers such as a heat sealable layer disposed on one side of the core layer including an amorphous polylactic acid resin and/or a polylactic acid resin-containing layer disposed on the side of the core layer opposite the heat sealable layer, a metal layer, or combinations thereof.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: December 23, 2014
    Assignee: Toray Plastics (America), Inc.
    Inventors: Mark S. Lee, Harold Egon Koehn, Takeshi Mizumura, Keunsuk P. Chang
  • Patent number: 8871298
    Abstract: A method for preparing a flexible film substrate with a low glass transition temperature can be used in the production of an article that retains dimensions and improves the surface smoothness after high temperature processing. The invention, for example, would enable low temperature films such as PET and PEN to be dimensionally stable and ultra flat at conditions commonly used in electronic processing which can typically exceed 200° C. More specifically, the methods enable the use of e.g. barrier films based on PET or PEN in OLED/PLED manufacturing.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: October 28, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Mark A. Roehrig, Yufeng Liu, Robert W. Peterson
  • Patent number: 8840824
    Abstract: 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: Grant
    Filed: October 22, 2010
    Date of Patent: September 23, 2014
    Assignee: Trivascular, Inc.
    Inventors: Joseph W. Humphrey, Jeffry B. Skiba
  • Patent number: 8808602
    Abstract: A method of treating a net (2) formed from interconnecting strands (4a, 4b) of ultra-high-molecular-weight polyethylene (UHMWPE), the net (2) being formed with knotless intersections (6), comprising the steps of: a) heating the net (2) to a temperature of from 80° to 135° C.; b) applying tension to the net (2); c) reducing the temperature to below 80° C.; and d) removing tension from the net (2).
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: August 19, 2014
    Assignee: Amsafe Bridport Limited
    Inventors: Michael Ian Andrewartha, Stephen Lawton
  • Publication number: 20140225308
    Abstract: A method for producing a stretchable sheet that can uniform the shape, such as the width and thickness, and the strength, of a stretched nonwoven fabric. The method for producing a stretchable sheet according to the invention comprises a step of stretching a nonwoven fabric in the cross-machine direction perpendicular to the machine direction in which the nonwoven fabric is transported and a step of compressing the nonwoven fabric stretched in the step of stretching the nonwoven fabric, in the thickness direction of the nonwoven fabric.
    Type: Application
    Filed: March 26, 2012
    Publication date: August 14, 2014
    Applicant: UNICHARM CORPORATION
    Inventors: Jun Okuda, Satoshi Mitsuno
  • Patent number: 8795565
    Abstract: A microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 5.0. The method of making the foregoing microporous membrane includes the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction including a simultaneous controlled machine direction relax.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: August 5, 2014
    Assignee: Celgard LLC
    Inventors: Xiangyun Wei, Charles Haire
  • Patent number: 8790559
    Abstract: 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: Grant
    Filed: April 20, 2011
    Date of Patent: July 29, 2014
    Assignee: SK Innovation Co., Ltd.
    Inventors: Gwi Gwon Kang, Jang-Weon Rhee, In Hwa Jung
  • Publication number: 20140203476
    Abstract: A method of treating a net (2) formed from interconnecting strands (4a, 4b) of ultra-high-molecular-weight polyethylene (UHMWPE), the net (2) being formed with knotless intersections (6), comprising the steps of: a) heating the net (2) to a temperature of from 80° to 135° C.; b) applying tension to the net (2); c) reducing the temperature to below 80° C.; and d) removing tension from the net (2).
    Type: Application
    Filed: July 12, 2011
    Publication date: July 24, 2014
    Inventors: Michael Ian Andrewartha, Stephen Lawton
  • Patent number: 8778247
    Abstract: 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: Grant
    Filed: January 15, 2010
    Date of Patent: July 15, 2014
    Assignee: DSM IP Assets B.V.
    Inventors: Alexander Antonius Marie Stroeks, Guido Richard Struijk
  • Patent number: 8748525
    Abstract: A polyester film is described, including a first polyester and a second polyester. The weight ratio of the first polyester to the second polyester ranges from 1:1 to 1:3. The glass transition temperature of the first polyester is higher than 140° C. and that of the second polyester is lower than 140° C.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: June 10, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Jyh-Horng Wu, Cheng-Hsing Fan, Ming-Tsong Leu, Chia-Hao Li, Yao-Tsu Wu, Chien-Pang Wu
  • Patent number: 8747713
    Abstract: 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: Grant
    Filed: July 22, 2009
    Date of Patent: June 10, 2014
    Inventors: Ole-Bendt Rasmussen, Nikolaj Wettergren Rasmussen
  • Patent number: 8728372
    Abstract: 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: Grant
    Filed: October 29, 2010
    Date of Patent: May 20, 2014
    Assignee: TriVascular, Inc.
    Inventors: Joseph W. Humphrey, Jeffrey B. Skiba
  • Patent number: 8722161
    Abstract: Disclosed is a heat shrinkable polyester film formed from a polyester resin that is mainly composed of ethylene terephthalate and contains 3-12% by mole (inclusive) of one or more monomer components, which can be amorphous components, relative to all the polyester resin components, in which the heat shrinkable polyester film has a main shrinkage direction which is the width direction. The heat shrinkable polyester film is characterized in that the shrinkage in 80° C. glycerin, the shrinkage in 130° C. glycerin and the tensile breaking strength in the longitudinal direction are controlled within specific ranges.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: May 13, 2014
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Masayuki Haruta, Yukinobu Mukoyama, Katsuya Ito
  • Patent number: 8685305
    Abstract: 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: Grant
    Filed: September 24, 2008
    Date of Patent: April 1, 2014
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Masayuki Haruta, Masatoshi Hashimoto, Masakazu Iwasaki, Katsuhiko Nose
  • Patent number: 8663530
    Abstract: A water-proof sound-transmitting membrane 10 includes a polytetrafluoroethylene porous membrane 1 and has a surface density of 1 to 20 g/m2. The polytetrafluoroethylene porous membrane 1 includes a first porous layer 1a, and a second porous layer 1b stacked on and integrated with the first porous layer 1a by a binding force acting between polytetrafluoroethylene matrices.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: March 4, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Yuri Horie, Kouji Furuuchi
  • Patent number: 8658285
    Abstract: Biaxially oriented polyester films including polyester polymer, a carbodiimide hydrolysis stabilizer, and a UV absorber are described. The polyester films have a carboxyl end group concentration of 5-20 equivalents per ton, and a haze value of 2% or less. The films exhibit superior transparency and possess stable light transmission characteristics. Methods of making the films and articles produced from the films are also described.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: February 25, 2014
    Assignee: Toray Plastics (America), Inc.
    Inventors: Carlos Hinton, Nao Yokota, Hirokazu Tajima, Roberto Siu
  • Patent number: 8647556
    Abstract: A system and method for controlling curl in multi-layer webs. The method can include providing a coated web, curing the coating to form a multi-layer web, and stretching the web during curing of the coating. Some coatings shrink at least partially when cured such that curing the coating induces a strain in the multi-layer web. Stretching the web occurs during curing to induce an opposing strain that at least partially counteracts the strain induced by curing to form a multi-layer web having a desired curvature. The system can include a curing section configured to cure the coating, and can further include a web stretching section, which can be located proximate the curing section and can be substantially coincident with the curing section, such that the web is stretched while the coating is cured.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: February 11, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Ronald P. Swanson, Andrew J. Henderson
  • Patent number: 8647553
    Abstract: In a process of producing a stretch sheet, a strip-shaped laminate sheet 10A having an elastically stretchable elastic layer 1 and substantially inelastic, inelastic fiber layers 2 and 3 partially joined to each other at bonds 4 or a strip-shaped fibrous sheet containing an elastic component and a substantially inelastic component and having embossed regions formed by embossing in parts is stretched in directions starting from the bonds 4 or the embossed regions to obtain a stretch sheet 10. The stretch sheet has raised ridges and recessed grooves extending in the direction perpendicular to the stretch direction, and the bonds 4 or the embossed regions are present in the ridges.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: February 11, 2014
    Assignee: Kao Corporation
    Inventors: Hideyuki Kobayashi, Koji Kanazawa, Akihiko Gunji, Tetsuya Masuki
  • Patent number: 8591998
    Abstract: A process in which a wound roll of biaxially oriented polyester film having a glass transition temperature (Tg (° C.)) is annealed at a temperature Ta (° C.) above Tg where Tg<Ta?Tg+100 (° C.) for a time t after thermal equilibrium where 1 hour?t?72 hours and cooled, for the purpose of improving the shrinkage of said polyester film.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: November 26, 2013
    Assignee: DuPont Teijin Films U.S. Limited Partnership
    Inventors: Duncan Henry MacKerron, Katsuyuki Hashimoto
  • Patent number: 8579621
    Abstract: Provided is a method for manufacturing a high-quality porous film. Here, while the porous film is being manufactured through forming micropores by stretching, a raw film is prevented from slipping on the surfaces of the respective rolls as much as possible even though the raw film includes oil or liquid paraffin as a solvent. The method is for manufacturing a porous film through forming micropores by successive biaxial stretching. A tensile force applied to the raw film F transferring from the longitudinal stretching machine (10) to the transverse stretching machine (50) is set not less than a stretching force necessary for the longitudinal stretching, and thus the raw film is prevented from slipping on a contact surface between the raw film and each roll of the longitudinal stretching machine (10).
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: November 12, 2013
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Takayoshi Sano, Satoru Nitta
  • Patent number: 8568892
    Abstract: A coated article includes a substrate having on its surface a coating that includes a polymer selected from the group consisting of hydroxypropylcellulose, poly(2-ethyl-2-oxazoline) and mixtures of these, a surfactant, colloidal silica, and a crosslinker selected from the group consisting of water-soluble titanium salts and water-soluble or water-dispersible organic crosslinkers. The coating may be formed by applying a dispersion of the coating composition in a diluent to the substrate and subsequently drying the coated substrate to evaporate the diluent.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: October 29, 2013
    Assignee: DuPont Teijin Films U.S. Limited Partnership
    Inventors: Chen Zhao, David Volsin, Cornell Chappell, Jr.
  • Patent number: 8535032
    Abstract: A film stretcher that transports a film material in a predetermined transport direction while holding an end of the film material in a width direction of the film material to stretch the film material in the width direction includes a holding unit that includes a stretching roll having an annular groove formed on an outer periphery of the stretching roll and an endless wire fitted in the annular groove over a predetermined rotation angle range of the annular groove in a circular arc shape so that the end of the film material in the width direction of the film material is pinched. The stretching roll is inclined so as to open toward a downstream side in the transport direction of the film material. The holding unit transports the film material in the transport direction while pinching the film material using the stretching roll and the endless wire, whereby the film material is stretched in the width direction.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: September 17, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Tokiwa Seisakusho Co., Ltd.
    Inventors: Hiroshi Harada, Hiroshi Suzuki, Toshiaki Kenmotsu
  • Patent number: 8529817
    Abstract: The present invention provides a stretched thermoplastic resin foam sheet that has excellent flexibility even compressed to a thickness as thin as about 0.05 mm, and a method for producing the same. The stretched thermoplastic resin foam sheet of the present invention is producible by stretching a thermoplastic resin foam sheet and has a compressive strength of 1 to 500 kPa as measured in accordance with JIS K6767 when compressed in a thickness direction thereof to a thickness of 0.05 mm. Accordingly, the stretched thermoplastic resin foam sheet has excellent flexibility even compressed to a thickness as thin as about 0.05 mm and is suitably used as a sealing material for a small electronic device such as mobile phones.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: September 10, 2013
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Takumei Uno, Eiji Tateo, Futoshi Kanazawa
  • Patent number: 8518321
    Abstract: Biaxially-oriented nylon film according to the present invention is biaxially-oriented nylon film made from nylon. In the biaxially-oriented nylon film, an elongation ratio of the film in each of four directions (an MD direction, a TD direction, a 45 degree direction and a 135 degree direction) until a film rupture is 70 percent or more, the elongation ratio being measured in a tensile test (testing conditions: a sample width is 15 mm; a distance between gauge points is 50 mm; and a tensile speed is 100 mm/min), and a stress ratio A (?1/?2) between a tensile stress ?1 and a tensile stress ?2 in a stress-strain curve obtained in the tensile test of the film is 2 or more in each of the four directions, the tensile stress ?1 being a value at a point where the elongation ratio becomes 50 percent while the tensile stress ?2 being a value at an yield point.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: August 27, 2013
    Assignee: Idemitsu Unitech Co., Ltd.
    Inventor: Masao Takashige
  • Patent number: 8512833
    Abstract: The present invention relates to a heat-shrinkable polyester film, which has a heat-shrinkage of 20% or more in both the longitudinal and transverse directions when treated with 80° C. water for 30 seconds and a bidirectional balance parameter in the range of 0.25 to 2.5 and exhibits an excellent properties in die-cutting and removing from a container such as a glass bottle for recycling by washing with hot water.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: August 20, 2013
    Assignee: SKC Co., Ltd
    Inventors: Tae-Byoung Oh, Tae-Hyoung Jung, Nam Ill Kim
  • Patent number: 8501300
    Abstract: A method of manufacture of a coated polymeric film which comprises performing in sequence the steps of: (i) forming a substrate layer comprising poly(ethylene naphthalate) having a thickness in a range from 50 ?m to 250 ?m; (ii) stretching the substrate layer in at least one direction; (iii) heat-setting the substrate layer under dimensional restraint at a tension in the range of about 19 to about 75 kg/m of film width, at a temperature above the glass transition temperature of the poly(ethylene naphthalate) but below the melting temperature thereof; (iv) heat-stabilizing the substrate layer under a tension of less than 5 kg/m of film width, and at a temperature above the glass transition temperature of the poly(ethylene naphthalate) but below the melting temperature thereof; and (v) disposing a coating layer on a surface of the substrate layer by a process comprising applying a planarizing coating composition thereto such that a surface of said coating layer exhibits an Ra value of less than 0.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: August 6, 2013
    Assignee: DuPont Teijin Films U.S. Limited Partnership
    Inventors: Julian Neal Robinson, Robert William Eveson, Karl Rakos
  • Patent number: 8465842
    Abstract: The present invention relates to a biaxial oriented polyester film and process for preparing the same, the said film is having an average ellipticity of not more than 0.6, Poisson ratio of not more than 0.7 (at elongation greater than 25%) all along the width of web and residual enthalpy in the range of 12% to 20%, a continuous reduction in residual film area up to an elongation of 100%.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: June 18, 2013
    Assignee: Polyplex Corporation Limited
    Inventors: Bidhan Krushna Mohanty, Krishna Reddy
  • Publication number: 20130115396
    Abstract: Methods of increasing the haze of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films without reducing the films' haze. The methods can involve cold stretching the films and imparting rib patterns into the film. The linear ribs can have alternating thick and thin gauges. Incrementally stretched thermoplastic films can have a haze that is approximately equal to or greater than the haze of the film prior to stretching.
    Type: Application
    Filed: November 4, 2011
    Publication date: May 9, 2013
    Inventor: Michael G. Borchardt
  • Patent number: 8431060
    Abstract: The invention provides a method of manufacturing a polymeric implantable medical device using gel extrusion of high molecular weight polymers or charge-induced orientation to avoid heat degradation of the polymer that might occur during conventional heat extrusion.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: April 30, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Bin Huang, David C. Gale
  • Patent number: 8394306
    Abstract: A method for producing a thermoplastic resin micro-porous film wherein a thermoplastic resin and a solvent (A) are melted and kneaded together to prepare a solution, the solution is extruded and cooled to prepare a formed product in a gel state, and the residual solvent (A) is removed from the formed product, characterized in that in the step of removing the solvent (A) use is made of a non-aqueous solvent (B) which is compatible with the solvent (A) and not compatible with the thermoplastic resin, and has a boiling point of 100° or higher and a flashing point of 0° or higher. The use of the non-aqueous solvent (B) provides a production method which allows the removal of a solvent with good efficiency and also with the reduction of a fear of environmental pollution and catching fire.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: March 12, 2013
    Assignee: Toray Battery Separator Film Co., Ltd.
    Inventors: Mitsuhiro Nishida, Kohtaro Kimishima, Sadakatsu Suzuki
  • Patent number: 8357321
    Abstract: A casting dope (11) prepared from CAP, additive and solvent is cast onto a casting belt (35), peeled and dried to be a primary film (14), and wound to a primary film roll (16). After the storage, the primary film (14) is unwound and fed into a tenter device (18). In the tenter device (18), while the stretch in the widthwise direction is performed, a relaxation of the primary film (14) in the longitudinal direction is made. If an extent percentage of the stretch is less than 70% to the predetermined value, the relation is started. The primary film (14) is fed out as a produced polymer film (22) from the tenter device (18), and the polymer film (22) is wound up to a product film roll (24). On the produced polymer film (22), the in-plane retardation increases and the thickness retardation decreases. Thus the optical properties become preferable.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: January 22, 2013
    Assignee: FUJIFILM Corporation
    Inventor: Kouji Tonohara
  • Patent number: 8337739
    Abstract: Methods of fabricating a polymeric implantable device from a PLLA/PDLA blend such as a stent with improved fracture toughness are disclosed. The blend is melt processed to allow formation of stereocomplex crystallites, which are nucleation sites for crystal growth. A polymer construct is formed from the melt processed blend and device is formed from the polymer construct. The stereocomplex crystallites result in an in increase in nucleation density and reduced crystal size, which increases fracture toughness of the formed device.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: December 25, 2012
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, James Oberhauser
  • Patent number: 8329772
    Abstract: This invention provides a screen printable dielectric composition comprising finely divided particles of talc dispersed in a curable liquid composition containing an acrylated urethane resin oligomer, an alkyl acrylate, and phosphoric acid.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: December 11, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventor: Jay Robert Dorfman
  • Patent number: 8318073
    Abstract: A mechanical activation system has a first activation member, a second activation member, an activation zone, and a non-slip zone. The first activation member has a first plurality of teeth, and the second activation member has a second plurality of teeth. The first plurality of teeth is capable of intermeshing with the second plurality of teeth. The activation zone includes a first portion of the first plurality of teeth and a first portion of the second plurality of teeth. The first portion of the first plurality of teeth and the first portion of the second plurality of teeth include teeth having continuous tips. The first non-slip zone includes a second portion of the first plurality of teeth or a second portion of the second plurality of teeth. The second portion includes a tooth having a discontinuous tip.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: November 27, 2012
    Assignee: The Procter & Gamble Company
    Inventor: Uwe Schneider