Next To Second Layer Of Polyamide Patents (Class 428/474.7)
  • Publication number: 20040045663
    Abstract: A set of resin compositions comprising a first resin composition for forming a first resin member which is laser light-weakly-absorbing and a second resin composition for forming a second resin member which is laser light-absorbing, whereby said first and second resin members can be superposed and, from the first resin member side to the interface between the first and second resin members, laser light is irradiated to weld them together. According to the invention, irradiation of laser light produces heat as energy is absorbed by the laser light weakly-absorbing first resin member, such that the temperature of the bonding surface with the second resin member increases to some extent. The second resin member in this state is heated by absorption of laser light and melts, while the first resin member also readily melts, and therefore the resin members at the joint become sufficiently interlocked to form a strong joint.
    Type: Application
    Filed: September 4, 2003
    Publication date: March 11, 2004
    Applicant: Ube Industries, Ltd., a Corporation of Japan
    Inventors: Tsutomu Katayama, Yasuharu Fukui
  • Publication number: 20040043233
    Abstract: A dual ovenable film having a first layer comprising one or more polyamides and a second layer comprising one or more polyamides. The first layer forms the first outer surface of the film. The second layer has a melting point of at least about 210° C. The film is capable of forming a water-containing package by providing two 4 inch by 6 inch sheets of the film each having four perimeter sides, placing the sheets in superimposed, coextensive arrangement having the first layers of the films in contact with each other, and heat sealing three perimeter sides of the sheets together using a ⅛-inch wide sealing bar at a temperature of 290° F., a dwell time of 0.5 seconds, and a sealing pressure of 40 psig to form an open pouch having heat seals along three of the four perimeter sides.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 4, 2004
    Applicant: Cryovac, Inc.
    Inventors: Arthur Leroy Berrier, Cynthia Louise Ebner
  • Publication number: 20040023049
    Abstract: A biaxially oriented polyamide laminate film having a layered structure of A/B, A/B/A or A/B/C, layer A having no projections with a height of 0.27 &mgr;m or higher on the surface, or having a density of projections with a height of 0.27 &mgr;m or higher on the surface of 200 projections/mm2, and the film exhibiting a maximum dimensional change of 4% or less during immersion in 95° C. hot water, a maximum dimensional change of 6% or less after withdrawal from the hot water, and a maximum dimensional change of 4% or less after heat treatment in dry hot air at 160° C.; and a process for producing the same.
    Type: Application
    Filed: February 21, 2003
    Publication date: February 5, 2004
    Inventors: Shinji Fujita, Yukinobu Mukoyama, Katsuya Ito
  • Patent number: 6680093
    Abstract: A multilayer composite comprises a layer configuration A/C/B or A/C/B/C/A, wherein I. each layer A comprises a molding composition that comprises at least 50% by weight of a polymer A containing amino groups; II. layer B comprises a molding composition that consists of at least 50% by weight of a thermoplastic polyester or fluoropolymer B; III. each layer C comprises a molding composition that consists essentially of the following components a)-c): a) from 5 to 95 parts by weight of the polymer A, b) from 95 to 5 parts by weight of the polymer B, and c) from 1 to 90 parts by weight of a compatibilizer comprising an alkyl acrylate polymer.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: January 20, 2004
    Assignee: Degussa AG
    Inventors: Hans Ries, Michael Schlobohm, Guido Schmitz
  • Patent number: 6670047
    Abstract: A stretched polyamide film obtained by melt-kneading and extruding a mixed resin (Z) containing a polyamide resin (X) and a modified resin (Y) into a film followed by biaxial stretching, wherein the polyamide resin (X) is obtained from a diamine component containing not less than 70 mol % of a metaxylylenediamine and from a dicarboxylic acid component containing not less than 70 mol % of an &agr;, &ohgr;-aliphatic dicarboxylic acid having 6 to 12 carbon atoms; the modified resin (Y) is obtained by graft-modifying an ethylene-ethyl acrylate copolymer resin with a maleic anhydride; and the mixed resin (Z) contains from 80 to 99% by weight of the polyamide and from 20 to 1% by weight of the modified resin. The stretched film exhibits not only excellent transparency and gas-barring property but also excellent flexibility and shock resistance.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: December 30, 2003
    Assignee: Mitsubishi Gas Chemical Co., Inc.
    Inventors: Hiroyuki Nanba, Koji Yamamoto
  • Publication number: 20030207136
    Abstract: Described is a thermoformable film comprising at least one layer (I) of polyamide containing solid anisotropic fillers (A) and individual spherulites. The anisotropic fillers (A) of the layer (I) of the thermoformable film, in a number-weighted average of all the dispersed constituents of the anisotropic fillers (A), have a dimension of no more than 10 m in at least one first direction (r1) freely selectable for each dispersed constituent and, in at least one second direction (r2) perpendicular to the first direction (r1), have a dimension of at least 50 times the dimension in the first direction (r1). The individual spherulites in the layer (I) have a number-average distance from each other of no more than 50 nm, and the cores of a majority of the individual spherulites in the layer (I) are free of a filler particle of the anisotropic fillers (A). Also described is a method of preparing the thermoformable films of the present invention, and methods of using the films for, for example, packaging foodstuffs.
    Type: Application
    Filed: March 16, 2001
    Publication date: November 6, 2003
    Inventors: Holger Eggers, Andreas Gasse, Rudi Klein
  • Patent number: 6627324
    Abstract: Described is a film having at least a single layer and at least one copolyamide layer (I) containing dispersed nanoscale nucleating particles. Crystalline structures extending from the dispersed particle surfaces are formed after the layer (I) is cooled from a molten state at a cooling rate of from 10° C. to 20° C. per minute. The dispersed nanoscale nucleating particles are present in layer (I) in an amount of from 10 ppm to 2000 ppm, based on the total weight of layer (I). Also described is a method of using the film of the present invention in packaging foodstuffs.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: September 30, 2003
    Assignee: Wolff Walsrode AG
    Inventors: Holger Eggers, Gregor Kaschel, Claudia Müller, Andreas Gasse, Rainer Brandt, Dieter Neubauer, Bernd Eilers
  • Publication number: 20030159915
    Abstract: This invention concerns a process for modifying a polymeric substrate by contacting the surface with a photoreactive solution of an inorganic photochemical electron donor while irradiating the surface with actinic radiation. Patterns of modified and unmodified surfaces can be produced. Polymeric substrates with modified surfaces may be effectively bonded to polymer films to form composite articles. The process has particular applicability to the surface modification of fluorinated polymers.
    Type: Application
    Filed: December 14, 2001
    Publication date: August 28, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Naiyong Jing, George Van Dyke Tiers
  • Patent number: 6607795
    Abstract: Herein is disclosed an oxygen scavenging composition, comprising (i) an oxygen scavenging polymer comprising units having structure I: wherein R1 and R2 are independently selected from the group consisting of —O—, —NCO—, and —NR—, wherein R is selected from the group consisting of —H and —C1-C6 alkyls; (ii) a transition metal oxidation catalyst; and (iii) an energy-absorbing compound selected from the group consisting of microwave reactive materials and photoinitiators having a wavelength of maximum absorption of electromagnetic radiation from about 200 nm to about 750 nm. The oxygen scavenging composition can be used to form an oxygen scavenging packaging article.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: August 19, 2003
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Hu Yang, Ta Yen Ching, Peter Kwan
  • Patent number: 6589616
    Abstract: Packaging containers produced from a composite shaped by cold-forming, the term “packaging containers” including base or lid parts or base or lid parts shaped by cold-forming. The base or lid parts can be shaped by cold-forming, and a lid foil or base foil, respectively, can form the corresponding closure for the packaging container. In addition, both the base and the lid part can be shaped by cold-forming, the depressions formed in the base and lid parts advantageously lying opposite one another. Examples of these packaging containers are strip packing or blister packaging for pharmaceutical products.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: July 8, 2003
    Assignee: Alcan Technology & Management Ltd.
    Inventors: Olivier Yves A. Muggli, Erwin Pasbrig
  • Patent number: 6582786
    Abstract: Described is a membrane comprising a microlayer polymeric composite having at least about 10 microlayers. The microlayers are each individually up to about 100 microns thick and alternate between at least one fluid barrier material and at least one elastomeric material. The membrane can be formed into a pressurized bladder or cushioning device for many applications, including footwear and hydropneumatic accumulators.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: June 24, 2003
    Assignee: Nike, Inc.
    Inventors: Henry W. Bonk, David J. Goldwasser, Paul H. Mitchell
  • Publication number: 20030113620
    Abstract: The present invention is directed to a nonwoven composite fabric for use on batteries or fuel cells comprising one or more layers of fine denier spunbond filaments and at least one layer of barrier material, wherein said nonwoven composite fabric has an improved barrier performance as measured by an increase in the hydrostatic head to barrier layer basis weight ratio. In the present invention, a first fine denier layer is formed, comprising continuous spunbond thermoplastic filaments, with the size of the continuous filaments between about 0.7 and 1.2 denier, preferably less than or equal to 1 denier. A barrier layer is deposited onto the first fine denier layer. The barrier layer preferentially comprises microfibers of finite length, wherein the average fiber diameter is in the range of about 1 micron to about 10 microns, and preferably between about 1 micron and 5 microns, said layers being consolidated into a composite fabric.
    Type: Application
    Filed: October 8, 2002
    Publication date: June 19, 2003
    Applicant: Polymer Group, Inc.
    Inventors: Julia A. Thompson, Richard Ferencz, Nick Mark Carter
  • Patent number: 6562475
    Abstract: The present invention provides polyamide layered films suitable for packaging applications, each film having a base layer made of a polyamide polymer and an easy-sliding layer made of a polyamide polymer containing inorganic fine particles at 0.15 to 3.00 wt %, the easy-sliding layer being formed on at least one surface of the base layer, and the first static friction coefficient between the easy-sliding layer side surfaces of the layered films at 23° C. in a 65% RH atmosphere being 0.70 or lower, or the second static friction coefficient between the easy-sliding layer side surfaces of the layered films at 23° C. in a 80% RH atmosphere being 0.95 or lower.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: May 13, 2003
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Haruo Okudaira, Keiji Mori, Yukinobu Miyazaki
  • Patent number: 6562443
    Abstract: A heat shrinkable film suitable for use in cook-in applications is provided which exhibits a transverse direction free shrink at 50° C. of less than about 2% and a transverse direction free shrink at 57° C. of at least about 3%. The food contact layer includes a polymer having a surface energy of at least about 0.034 J/m2 and a second layer includes at least one member selected from the group consisting of polyester, polyvinylidene chloride, polyamide and polyalkylene carbonate. Preferably, the desired shrink properties are attained by annealing the film under controlled conditions.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: May 13, 2003
    Assignee: Cryovac, Inc.
    Inventors: R. Karina Espinel, Ram K. Ramesh
  • Publication number: 20030083438
    Abstract: An adhesive composition is described having an amine-modified, low acid ethylene-methacrylic acid copolymer with a melt flow index (MI) of 1.5 or less. Preferably, the acid copolymer has an acid content between 2 and 5 wt % and an amine content between 0.05 and 0.5 wt %. The adhesive is useful for bonding with an aliphatic polyketone copolymer such as an ethylene-carbon monoxide copolymer.
    Type: Application
    Filed: June 6, 2002
    Publication date: May 1, 2003
    Inventors: Christian Leboeuf, Carlton E. Ash, Karin Van Poppel
  • Patent number: 6548181
    Abstract: The invention relates to a flexible polyamide composition containing at least 50 parts by weight of non-cross-linked rubber per 50 parts by weight of polyamide and the production thereof. The polyamide has a molecular weight such that the melt viscosity at the processing temperature is at most 300 pa.s, preferably at most 200 pa.s. The rubber's Mooney viscosity is at least 40, most preferable is a rubber with a Mooney viscosity of at least 60. The rubber has been functionalized. Preferably a combination of a functionalized and a non-functionalized rubber is used. The rubber particles in the polyamide matrix have a particle size of at most 5 &mgr;m, preferably at most 3 &mgr;m.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: April 15, 2003
    Assignee: DSM N.V.
    Inventor: Guido P. C. Beusen
  • Patent number: 6524719
    Abstract: The present invention relates to a laminate film where on at least one face of a substrate layer selected from polyester film and aliphatic polyamide film, there is provided a polyamide layer in which the chief component is an aromatic polyamide of glass transition temperature at least 60° C., as a layer to undergo vapour deposition, and (1) the centre-line average roughness (Ra) of the face which is to undergo vapour deposition is in the range 0.005 to 0.03 &mgr;m, or (2) between the substrate layer and the polyamide layer, a layer comprising a single polymer or a plurality of polymers of SP value 10 to 15 is interposed between the substrate A layer and the polyamide C layer; and the invention offers film for vapour-deposition which is outstanding in its processability in vapour-deposition, and in its gas barrier properties.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: February 25, 2003
    Assignee: Toray Industries, Inc.
    Inventors: Nobuhisa Yamane, Kokichi Hashimoto, Masahiro Kimura
  • Patent number: 6503655
    Abstract: A thin, flat, and porous carbon gas diffusion electrode having a side in contact with a supply of gas and a side in contact with an electrolyte, comprises a pyrolysis product of a composite of an organic aerogel or xerogel and a reinforcing skeleton consisting at least in part of organic material. The porosity of the carbon gas diffusion electrode according to the invention can be regulated at will while the surface of the electrode is smooth.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: January 7, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventors: Raino Petricevic, Jochen Fricke, Rainer Leuschner, Matthias Lipinski
  • Patent number: 6500559
    Abstract: A film includes a core layer having an amorphous polyamide; two intermediate layers, disposed on opposite surfaces of the core layer, including a semicrystalline polyamide; two adhesive layers, each disposed on a surface of the respective intermediate layer, including a polymeric adhesive; and two outer layers, each disposed on a surface of a respective adhesive layer, including an ethylene/alpha olefin copolymer, propylene homopolymer, or propylene/alpha olefin copolymer; and a second outer layer, disposed on a surface of a respective adhesive layer, including amorphous polyamide, semicrystalline polyamide, ethylene/alpha olefin copolymer, propylene homopolymer, or propylene/alpha olefin copolymer. The film can alternatively have a core layer including a polymeric adhesive, and two intermediate layers each having an amorphous polyamide. A method of packaging a product using these films, and a package, are also disclosed.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: December 31, 2002
    Assignee: Cryovac, Inc.
    Inventors: Frank M. Hofmeister, Thomas D. Kennedy, Carlo E. Musco, Paul J. Satterwhite, G. Vince Sharps
  • Patent number: 6491994
    Abstract: A multi-layer fuel tube comprising at least three thermoplastic resin layers, said at least three thermoplastic resin layers comprising (A) a layer of polyamide 11 resin and/or polyamide 12 resin, (B) layer of polyamide 6, and (C) a layer of polyamide containing 0.05 to 30% by weight of a layered silicate uniformly dispersed therein.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: December 10, 2002
    Assignee: Ube Industries, Ltd.
    Inventors: Satoshi Kito, Shigetarou Miyano
  • Publication number: 20020155307
    Abstract: The present invention is a non-porous, breathable membrane of at least polyamide-4,6, with an elongation at rupture of about 250 to about 500% in the longitudinal direction and about 200 to about 500% in the transverse direction. The membrane has a higher heat resistance than a non-porous, breathable membrane made from polyether ester and, if it also contains an antioxidant, passes the oven/watertightness test. If the membrane is produced from a mixture of polyamide-4,6 and about 10 to about 30% by weight polyether amide, the membrane exhibits a surprisingly increased water-vapor permeability. The membrane is usable in the manufacture of thermally protective clothing.
    Type: Application
    Filed: April 3, 2002
    Publication date: October 24, 2002
    Applicant: SYMPATEX TECHNOLOGIES GMBH
    Inventors: Bertram R. Bohringer, Henricus Joannes Maria Van De Ven, Jozef Christiaan Wilhelmus Spijkers
  • Patent number: 6461716
    Abstract: The present invention relates to an apertured web formed from a polymeric film having permanent hydrophilicity which is suitable for use as a topsheet in an absorbent article. One embodiment of the present invention is a multi-layer polymeric film having a first layer, a second layer, and at least one intermediate layer between the first and second layers, where one of the first or second layers is a block copolymer of a polyether and another polymer and the other layer is a hydrophobic layer as defined herein. Methods of producing such webs are also disclosed. The present invention also pertains to absorbent articles which preferably include a topsheet in accordance with the present invention, a backsheet secured to the topsheet, and an absorbent core positioned between the topsheet and the backsheet.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: October 8, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Yann-Per Lee, Hugh Joseph O'Donnell, Andrew Julian Wnuk, Todd Leon Mansfield, Gary Dean LaVon, Fernando Benvegnu
  • Patent number: 6462018
    Abstract: In accordance with the present invention a novel fibrin polymer structure is disclosed. The novel fibrin polymer structure useful, for example, as a surgical sealant, is comprised of a plurality of discrete, droplets of polymerizing or polymerized fibrin each encapsulated by a “skin” of fibrin polymer. These fibrin-skin encapsulated droplets are applied so as to be built up one upon the other, layer by layer, to form an integral sealant structure. The cumulative effect of the encapsulating skins of those droplets which form the sealant surface is a surface skin which unexpectedly resists cell penetration but enhances cell migration across the surface. The sealant structure of the present invention can be prepared by spray delivery of fibrin polymer forming materials wherein the time required for the materials to commence polymerizing after mixing is less than or equal to the transit time of said materials from the applicator tip to the target surface.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: October 8, 2002
    Assignee: Bristol-Myers Squibb Company
    Inventors: Stewart A. Cederholm-Williams, Julian M. Marshall, Jose L. Velada, Derek A. Hollingsbee
  • Publication number: 20020119272
    Abstract: A good layer adhesion can be achieved in a composite having two or more layers wherein
    Type: Application
    Filed: December 21, 2001
    Publication date: August 29, 2002
    Applicant: DEGUSSA AG
    Inventors: Hans Ries, Guido Schmitz, Harald Haeger
  • Patent number: 6428866
    Abstract: A multilayer plastic composition having (I) an outer layer of a thermoplastic molding composition and (II) an inner layer of an electrically conductive thermoplastic molding composition containing graphite fibrils, which are useful for the transport of (petro) chemical materials and also in the motor vehicle sector for conveying brake, cooling and hydraulic fluid and also fuel.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: August 6, 2002
    Assignee: Degussa-Huels Aktiengesellschaft
    Inventors: Hans Jadamus, Hans Ries, Stefan Roeber
  • Patent number: 6420044
    Abstract: A masterbatch concentrate for addition to a fiber-forming polyamide to form an acid dye stain-resistant polyamide includes a carrier and a reagent, the reagent having the formula: and can be an alkali metal, an alkaline earth metal or a transition metal salt of 5-sulfoisophthalic acid. The carrier can be (A) a terpolymer of an alpha-monoolefin, ethylene -&agr;, &bgr; unsaturated carboxylic acid ester and an internal anhydride of an ethylenically unsaturated carboxylic acid. It can alternatively be (B) a semi-crystalline thermoplastic polyester, (c) a semi-crystalline thermoplastic polyamide, or mixtures of (B) and C).
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: July 16, 2002
    Assignee: Prisma Fibers, Inc.
    Inventor: Matthew Benjamin Studholme
  • Patent number: 6416832
    Abstract: The invention provides a single-layer or multi-layer packaging film or sheet having at least one layer formed of a polyamide resin composition, wherein the layer formed of the polyamide resin composition is a layer (A) formed of a polyamide resin composition comprising a copolymer nylon (c) composed of an aliphatic nylon (co)polymer component (1) and an aromatic nylon (co)polymer component (2) in a proportion of at least 5 wt. %.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: July 9, 2002
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Tsutomu Uehara, Hitoshi Ishii, Hajime Tsukamoto
  • Patent number: 6410155
    Abstract: The present invention is directed to a novel process of making N-isopropyl acrylamide (NiPAm) polymers based upon the reaction of poly(acrylic acid) and N-isopropylamine. The disclosed method of the present invention uses polyacrylic acid as a starting material to synthesize NiPAm polymers. In one embodiment, the present invention discloses a condensation reaction of an intermediate salt to form homopolymers, copolymers and terpolymers of N-isopropyl acrylamide (NiPAm) with acrylic acid and/or alkyl acrylates in a molten state, which is adaptable to a continuous reactive extrusion process. Binder compositions, water-dispersible products and thermoformable articles containing the NiPAm polymers are also disclosed.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: June 25, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Pavneet Singh Mumick, Yihua Chang, James Hongxue Wang
  • Patent number: 6403231
    Abstract: The present invention relates to thermoplastic film structures having improved barrier and/or mechanical properties and methods for making the film structures. These improvements are achieved by incorporating into the thermoplastic film structures a polymeric nanocomposite comprising a polymer and nanosize particles of a modified clay.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: June 11, 2002
    Assignee: Pechiney Emballage Flexible Europe
    Inventors: Chad Mueller, Roger Kaas, Bertrand Fillon, Sandrine Tournier, Jean-Jacques Lerda
  • Patent number: 6395400
    Abstract: A magnetic recording medium using a biaxially oriented aromatic polyamide film as a nonmagnetic support resulting in hardly any improper windings or edge damages. The magnetic recording medium includes a magnetic layer containing ferromagnetic powders dispersed in a binder formed on the nonmagnetic support, wherein the biaxially oriented aromatic support has a ratio of the loss tangent at a temperature of 40° C. to the loss tangent at a temperature of 100° C. of 0.7 or higher.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: May 28, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroo Inaba, Masaki Suzuki, Hiroaki Takano, Masatoshi Takahashi
  • Patent number: 6395386
    Abstract: This invention relates to novel multilayer formed articles including, but not limited to containers such as bottles, tubes, pipes, preforms and films (including oriented films such as biaxially oriented) comprising a melt processible resin having dispersed therein a platelet filler. The multilayer formed articles have improved barrier while maintaining excellent clarity. More particularly, the multilayer structures of the present invention display haze values of less than about 2% and carrier resins which are substantially free from platelet particles having a diameter greater than about 15 microns.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: May 28, 2002
    Assignee: Eastman Chemical Company
    Inventors: Shriram Bagrodia, Louis Thomas Germinario, Rodney Layne Piner, Jack Wesley Trexler, Jr.
  • Patent number: 6379812
    Abstract: A multilayer film, comprising, in the following order: a. a first layer consisting essentially of amorphous polyamide; b. a second layer adhered to a surface of the first layer; and c. a third layer adhered to a surface of the second layer, the third layer comprising at least one member selected from ethylene/vinyl alcohol copolymer, polyamide MXD6, polyamide MXD6/MXDI, polyvinylidene chloride, and polyacrylonitrile.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: April 30, 2002
    Assignee: Cryovac, Inc.
    Inventors: Frank M. Hofmeister, Paul J. Satterwhite, Thomas D. Kennedy
  • Patent number: 6376093
    Abstract: A polyamide film satisfying (a) a haze value of not more than 5.0%, (b) a coefficient of kinetic friction (A) of not more than 1.0 under 50% humidity, the coefficient (A) being measured with regard to fiction between the same two polyamide films, and (c) a ratio of coefficients of kinetic friction (B)/(A) of not more than 1.5, the (B) being a coefficient of kinetic friction at 65% humidity, a billy oriented polyamide film showing an average dimensional change of not more than 3.0% and a difference between the smallest dimensional change and the largest dimensional change of not more than 2.0%, between before immersion in hot water at 95° C. and during the immersion, and an average dimensional change of not more than 4.0% and a difference between the smallest dimensional change and the largest dimensional change of not more than 2.0%, between the film without treatment and the film after withdrawal from said hot water; and a polyamide laminate film containing the film as a substrate layer.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: April 23, 2002
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Shinji Fujita, Masaki Sugimoto, Shigeru Komeda, Masazumi Iwanishi, Masayoshi Satoh, Chikao Morishige, Kiyoshi Iseki, Seiichiro Yokoyama
  • Patent number: 6346285
    Abstract: An article, such as a bag, pouch, or casing, is made from a multilayer film which has: (a) a first layer, which is an outer film layer, comprising a polyamide having a melting point of from about 250° F. to 400° F., the first layer having a thickness of less than about 18 percent, based on a total thickness of the multilayer film; (b) a second layer comprising at least one member selected from the group consisting of polyamide 6, polyamide 9, polyamide 10, polyamide 11, polyamide 12, polyamide 66, polyamide 610, polyamide 612, polyamide 6I, polyamide 6T, polyamide 69, and copolymers thereof, the second layer having a thickness of from about 3 to 30 percent of the total thickness of the multilayer film; and (c) a third layer which serves as an O2-barrier layer and comprises at least one member selected from the group consisting of ethylene/vinyl alcohol copolymer, and polyvinylidene chloride. The first layer of the film is sealed to itself.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: February 12, 2002
    Assignee: Cryovac, Inc.
    Inventor: Ram K. Ramesh
  • Patent number: 6346328
    Abstract: A composite article is provided which includes a fluoropolymer intimately bonded to a component including a substantially non-fluorinated thermoplastic having pendant phenolic groups in combination with a base. Increased adhesion is observed by a greater peel strength value between the fluoropolymer component and a non-fluorinated thermoplastic having pendant phenolic groups.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: February 12, 2002
    Assignee: Dyneon LLC
    Inventors: Edward E. Parsonage, Attila A. Molnar, Thomas J. Blong, Robert E. Kolb
  • Patent number: 6340530
    Abstract: Book covers and a substantially transparent, coextruded matte, bilayer nylon film which is contact transparent to a paper stock to form a soft book cover having high scratch, abrasion and mar resistance, a soft feel and good moisture curl properties. A substantially transparent, coextruded film which has a first nylon layer attached adjacent to a second nylon layer, the first nylon layer has from about 20 weight percent to about 70 weight percent of a refractory filler based on the weight of the first nylon layer.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: January 22, 2002
    Assignee: Honeywell International Inc.
    Inventors: Simon J. Porter, Jeffrey D. Moulton, Lance R. Altizer
  • Patent number: 6338896
    Abstract: The present invention provides a magnetic recording medium, which comprises a magnetic layer having ferromagnetic powder dispersed in a binder on a non-magnetic support member, wherein the non-magnetic support member is made of aromatic polyamide, an undercoating layer is provided between said non-magnetic support member and a lower non-magnetic layer, or between the non-magnetic support member and the magnetic layer, said undercoating layer comprising polyamide resin having tertiary amino group and containing repeated structural units expressed by the following formulae (1) and (2).
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: January 15, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsuhiko Meguro, Tatsuo Ishikawa, Hiroshi Hashimoto
  • Publication number: 20020001699
    Abstract: In a manufacturing method of a printed circuit board comprising a process of coating insulative resin on a surface of a printed circuit board having a blind hole and a process of filling up the insulative resin in the blind hole, the printed circuit board coated with the insulative resin is kept in a low pressure atmosphere of 1.3 to 666 hPa, and then the insulative resin is hardened, so that the insulative resin is filled up in the blind hole appropriately.
    Type: Application
    Filed: July 20, 2001
    Publication date: January 3, 2002
    Applicant: Victor Company of Japan, Ltd.
    Inventors: Yasuaki Seki, Shigenori Shiratori, Kenji Suzuki
  • Patent number: 6335101
    Abstract: A thermoplastic composite having a multiplicity of layers and comprising: I) a layer of a polyamide molding composition, II) a layer of a polyester molding composition, and III) a layer of an adhesion promoter adherent to I and II comprising at least 50% by weight of a blend of: a) from 20 to 80% by weight of a polyamide, prepared from &agr;) at least one diamine having from 6 to 12 carbon atoms, and &bgr;) an essentially stoichiometrically equivalent amount of at least one dicarboxylic acid comprising at least 5 mol % of a dicarboxylic acid having from 10 to 36 carbon atoms, and b) from 80 to 20% by weight of a polyester, prepared from &agr;) a mixture of from 30 to 95 mol % of an aromatic dicarboxylic acid having from 6 to 20 carbon atoms and from 70 to 5 mol % of the same dicarboxylic acid as in the polyamide of the adhesion promoter, having from 10 to 36 carbon atoms, and &bgr;) at least one diol having from 2 to 12 carbon atoms.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: January 1, 2002
    Assignee: Degussa-Hüls Aktiengesellschaft
    Inventors: Harald Haeger, Guido Schmitz, Franz-Erich Baumann, Giselher Franzmann, Georg Oenbrink
  • Patent number: 6326084
    Abstract: The invention relates to a method of high frequency welding of non-polar thermoplastic elastomers characterized in that said elastomers comprise a polar modifier. Furthermore, the invention relates to shaped articles obtainable by said method.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: December 4, 2001
    Assignee: Advanced Elastomer Systems, L.P.
    Inventors: Trazollah Ouhadi, Jacques Horrion, Ernst Van Issum
  • Publication number: 20010036551
    Abstract: The present invention relates to a laminate film where on at least one face of a substrate layer selected from polyester film and aliphatic polyamide film, there is provided a polyamide layer in which the chief component is an aromatic polyamide of glass transition temperature at least 60° C., as a layer to undergo vapor deposition, and (1) the center-line average roughness (Ra) of the face which is to undergo vapor deposition is in the range 0.005 to 0.03 &mgr;m, or (2) between the substrate layer and the polyamide layer, a layer comprising a single polymer or a plurality of polymers of SP value 10 to 15 is interposed between the substrate A layer and the polyamide C layer; and the invention offers film for vapor-deposition which is outstanding in its processability in vapour-deposition, and in its gas barrier properties.
    Type: Application
    Filed: April 26, 2001
    Publication date: November 1, 2001
    Inventors: Nobuhisa Yamane, Kokichi Hashimoto, Masahiro Kimura
  • Publication number: 20010027072
    Abstract: The present invention is directed to a novel process of making N-isopropyl acrylamide (NiPAm) polymers based upon the reaction of poly(acrylic acid) and N-isopropylamine. The disclosed method of the present invention uses polyacrylic acid as a starting material to synthesize NiPAm polymers. In one embodiment, the present invention discloses a condensation reaction of an intermediate salt to form homopolymers, copolymers and terpolymers of N-isopropyl acrylamide (NiPAm) with acrylic acid and/or alkyl acrylates in a molten state, which is adaptable to a continuous reactive extrusion process. Binder compositions, water-dispersible products and thermoformable articles containing the NiPAm polymers are also disclosed.
    Type: Application
    Filed: May 18, 2001
    Publication date: October 4, 2001
    Inventors: Pavneet Singh Mumick, Yihua Chang, James Hongxue Wang
  • Patent number: 6294263
    Abstract: The present invention is to provide a polyamide laminated film comprising a resin layer A and a resin layer B formed on at least one surface of the resin layer A, the resin layer A being composed mainly of a m-xylylene group-containing polyamide polymer (a-1) which is one prepared from monomer components containing a xylylenediamine compound as a main diamine component and an &agr;,&ohgr;-aliphatic dicarboxylic acid having from 6 to 12 carbon atoms as a main dicarboxylic acid component, the xylylenediamine compound being m-xylylenediamine alone or a mixture of m-xylylenediamine and p-xylylenediamine, and the resin layer B being mainly composed of a mixed polymer (b-3) which is a mixture of from 99 to 80% by weight of an aliphatic polyamide (b-1) and from 1 to 20% by weight of an elastomer (b-2). The laminated film is good in a gas barrier property and also in a flexural fatigue resistance and a transparency.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: September 25, 2001
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Haruo Okudaira, Akira Matsuda, Sinitiro Okumura, Kazumoto Imai, Tsutomu Oko
  • Patent number: 6291041
    Abstract: A multi-layer heat resistant film laminate with good optical properties, extended shelflife, and memory characteristics and its method of manufacture, the laminate having the generalized structure of (outside) A/B/C/D/C/B/E (inside), where A is an outer moisture barrier layer, B is an intermediate adhesive layer, C is a polyamide layer D is an oxygen barrier layer, and E is a sealant layer.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: September 18, 2001
    Assignee: Curwood, Inc.
    Inventors: Scott Howells, Gregory Robert Pockat
  • Publication number: 20010014420
    Abstract: A laminate comprising an ion conductive material having excellent ion conductivity at room temperature or at lower temperatures, a small water content, sufficiently high mechanical strength and storage stability to allow for handling the ion conductive material in practice, and a form which is easily integrated into an electrochemical element or electrochemical devices. Also disclosed is a production method thereof, and a method of producing a battery, a capacitor or an electrochemical element or apparatus using the laminate. The laminate comprises an intermediate layer of an ion conductive material having on the upper and lower portions thereof outer layers having an ion conductivity lower than that of the intermediate layer. Furthermore, at least one of the outer layers is a layer comprising a non electron-conductive material.
    Type: Application
    Filed: October 8, 1997
    Publication date: August 16, 2001
    Inventors: MASATAKA TAKEUCHI, SHUICHI NAIJO, TAKASHI OHKUBO, JUNJI YOTSUYANAGI, MOTOYUKI HIRATA, MOTOYUKI HIRATA
  • Patent number: 6265081
    Abstract: The present invention relates to an integrally molded article of polyamide resin comprising at least one primary molded pieces made of a primary molding material and at least one secondary molded pieces made of a secondary molding material, and having a welded part, said secondary molding material being injection molded on the surface of said primary molded piece, thereby welding the secondary molded piece comprising the secondary molding material to said primary molded piece, and said primary and secondary molding materials each comprising 100 parts by weight of a polyamide resin and 0.05 to 10 parts by weight of nigrosine or a nigrosine derivative.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: July 24, 2001
    Assignee: Mitsubishi Engineering Plastics Corporation
    Inventors: Hiroshi Urabe, Hajime Oyama, Tatsuya Hitomi
  • Patent number: 6217961
    Abstract: Composite including a rubber/thermoplastic blend adherent by itself to a thermoplastic material; the blend is in the form of a thermoplastic matrix containing rubber nodules functionalized and vulcanized during the mixing with the thermoplastic. Composite articles obtained by overmolding the vulcanized rubber/thermoplastic blend onto the thermoplastic.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: April 17, 2001
    Assignee: Altofina
    Inventors: Marius Hert, Patrick Alex, Martine Cerf, Christian Dousson
  • Patent number: 6203920
    Abstract: The invention relates to compositions comprising a matrix of an alloy of (a) polyamide and (b) polymer having polyamide blocks and polyether blocks, dispersed in which matrix is a crosslinked phase (c), the said compositions having a melt strength of more than 1.5 and a flexural modulus at 23° C. (in accordance with ISO 178-93) of less than 700 MPa and preferably between 50 and 250 MPa. Such a composition is useful for manufacturing extrusion blow-moulded parts, especially for cars. It also relates to articles additionally comprising a part made of polyamide and polyolefin or of a mixture of polyamide and polyolefin.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: March 20, 2001
    Assignee: Elf Atochem S.A.
    Inventors: Alain Bouilloux, Laurent Teze
  • Patent number: 6183845
    Abstract: A device, and a method for forming a softgel having multiple gelatin layers and softgels having multiple gelatin layers are disclosed. In particular there is provided a device for forming a gelatin sheet having at least two gelatin layers. Each gelatin layer has a thickness. The device comprises a gelatin spreader box which includes at least one opening for extruding a gelatin sheet. The device also includes a first and a second height adjustable gate disposed at least partially across the opening; and a first and a second height adjustment control. Adjustment of the first height adjustment control varies the height of the first gate and adjustment of the second height adjustment control varies the height of the second gate, thereby controlling the thickness of the at least two gelatin layers.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: February 6, 2001
    Assignee: Banner Pharmacaps, Inc.
    Inventor: Lee Ikemoto
  • Patent number: 6180197
    Abstract: A multi-layer tube suitable for use in a motor vehicle system to transport fluids containing hydrocarbons such as would be found in a fuel line, a vapor return line or a vapor recovery tube having a first layer radially disposed innermost made up of an extrudable melt-processible thermoplastic material selected from the group consisting of aromatic polyketones, aliphatic polyketones and mixtures thereof, and second layer made up of an extrudable, melt-processible thermoplastic material capable of sufficiently permanent laminar adhesion with the first layer so as to prevent delamination between the first and second layers during a desired lifetime of the tube, and a third layer overlying the first layer made up of a melt-processible thermoplastic material such as polyamides, high density polyethylenes and mixtures thereof.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: January 30, 2001
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Tao Nie, Duane Pontbriand, David Bensko