Next To Addition Polymer From Unsaturated Monomer(s) Patents (Class 428/475.8)
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Patent number: 7767312Abstract: An easy-to-tear laminate is provided which is satisfactory in tearability and heat-sealing strength and excellent in ease of opening and contents-protecting performance. The laminate comprises a base layer and a layer comprising 10-95% by weight specific ethylene-based terpolymer (A) and 5-90% by weight specific low-density polyethylene (B) produced by the high-pressure radical polymerization method.Type: GrantFiled: August 15, 2005Date of Patent: August 3, 2010Assignee: Japan Polyethylene CorporationInventor: Shinji Sakamoto
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Patent number: 7767294Abstract: A primer coating is provided for use on polymeric substrates to enhance adhesion of liquid toner to the substrates for printing in an electrophotographic printing device. The primer coating is water-based and includes a dispersion of a copolymer of ethylene and acrylic or methacrylic acid, and a compatible adhesion enhancer selected from an aliphatic polyurethane dispersion, a hydrogenated hydrocarbon rosin or rosin ester dispersion, and an amorphous acrylic polymer dispersion. The coating may also include additives such as wetting agents, antiblocking agents, matting agents, and waxes. The primer coating may be applied to a variety of polymeric substrates including polypropylene, biaxially oriented polpypropylene, polyethylene terephthalate, and polyvinyl chloride.Type: GrantFiled: November 10, 2008Date of Patent: August 3, 2010Assignee: Michelman, Inc.Inventor: Robin Cooper
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Patent number: 7717139Abstract: The present invention relates to polyamide/polyolefin blends containing carbon nanotubes. The invention also relates to structures comprising at least one layer of these blends and optionally at least one layer of another material. These structures may be in the form of bottles, tanks, containers, hoses, pipes and vessels of any kind. These structures may be manufactured using the standard techniques for thermoplastics, such as injection moulding, extrusion-blow moulding and coextrusion.Type: GrantFiled: February 18, 2004Date of Patent: May 18, 2010Assignee: Arkema FranceInventor: Benoit Brule
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Publication number: 20100108128Abstract: Multilayer structures useful as a backsheet for an electronic device, e.g., a photovoltaic cell, comprise (A) a top layer comprising a polyolefin resin, e.g., ethylene vinyl acetate, and having a top facial surface and a bottom facial surface, (B) a tie layer comprising an adhesive, e.g., an ethylene glycidyl methacrylate, having a top facial surface and a bottom facial surface, the top facial surface in adhering contact with the bottom facial surface of the top layer, and (C) a bottom layer comprising a polyolefin having at least one melting peak greater than 125° C., e.g., a polypropylene, and having a top facial layer and a bottom facial surface, the top facial surface in adhering contact with the bottom facial surface of the tie layer.Type: ApplicationFiled: November 4, 2009Publication date: May 6, 2010Inventors: Lih-Long Chu, John Naumovitz, Nichole E. Nickel
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Patent number: 7662454Abstract: A laminate hose comprising a laminate of a fluorocopolymer and a polyamide, wherein the fluorocopolymer comprises repeating units (a) based on tetrafluoroethylene and/or chlorotrifluoroethylene, repeating units (b) based on a cyclic hydrocarbon monomer having a dicarboxylic anhydride group and having a polymerizable unsaturated group in the ring, and repeating units (c) based on another fluoromonomer (excluding tetrfluoroethylene and chlorofluoroethylene) with contents of the repeating units (a) of from 50 to 99.89 mol %, the repeating units (b) of from 0.01 to 5 mol % and the repeating units (c) of from 0.1 to 49.99 mol % based on the total number of mols of the repeating units (a), (b) and (c), and has a flow coefficient of from 0.1 to 1,000 mm3/sec.Type: GrantFiled: March 29, 2006Date of Patent: February 16, 2010Assignee: Asahi Glass Company, LimitedInventors: Atsushi Funaki, Toshiyuki Chisaka, Hiroki Kamiya
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Patent number: 7662463Abstract: A mulch barrier film having, for example, a methyl bromide permeability of less than about 15 g/m2-hr and machine direction Elmendorf tear strength of at least about 75 gf. The mulch barrier film is an extruded, cast, and preferably embossed, multilayer film having at least one polyolefin layer and at least one polyamide layer. The combination of the film structure and the casting process achieves a barrier film that has low permeability to volatile soil treatment chemicals, such as methyl bromide, and superior tear strength properties.Type: GrantFiled: August 17, 2007Date of Patent: February 16, 2010Assignee: Pliant CorporationInventor: Amiel Bassam Sabbagh
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Publication number: 20100034939Abstract: The present invention is directed to a plastic film suitable for an oven cooking process, comprising a multilayer film comprising having an outer layer comprising polyamide, where the polyamide has a melting point of at least 210° C., a core layer of crosslinked EVA copolymer and a sealing layer of polyester elastomer with melting point of less than 225° C.Type: ApplicationFiled: July 30, 2009Publication date: February 11, 2010Inventor: Dimitris Gkinosatis
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Publication number: 20100015869Abstract: An article comprises a substrate and a functional polymeric phase change material bound to the substrate. In some aspects the functional polymeric phase change material is chemically bound to the substrate and can be accomplished by at least one of covalent bonding or electrovalent bonding. The functional polymeric phase change material can comprise a reactive function selected from the group consisting of an acid anhydride group, an alkenyl group, an alkynyl group, an alkyl group, an aldehyde group, an amide group, an amino group and their salts, a N-substituted amino group, an aziridine, an aryl group, a carbonyl group, a carboxy group and their salts, an epoxy group, an ester group, an ether group, a glycidyl group, a halo group, a hydride group, a hydroxy group, an isocyanate group, a thiol group, a disulfide group, a silyl or silane group, an urea group, and an urethane group, and wherein the substrate comprises at least one of cellulose, wool, fur, leather, polyester and nylon.Type: ApplicationFiled: August 5, 2008Publication date: January 21, 2010Applicant: OUTLAST TECHNOLOGIES, INC.Inventors: Mark Hartmann, Aharon Eyal
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Patent number: 7544742Abstract: Disclosed are polyamide potassium ionomer polyol compositions that have antistatic properties. Also disclosed are articles, including laminates and monolayer or multilayer structures comprising such compositions to which neither powders nor dusts easily adhere electrostatically.Type: GrantFiled: November 30, 2006Date of Patent: June 9, 2009Assignee: E.I. du Pont de Nemours and CompanyInventor: David J. Walsh
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Patent number: 7514131Abstract: An in-mold label includes a thermoplastic resin film substrate layer and a heat-seal resin layer. The label has a label body and a separable part. Tearable perforations are provided between the label body and the separable part. The adhesion strength between the separable part and a thermoplastic resin container is from 80 to 270 gf/10 mm, when the label is stuck to the container during in-mold production of the container. A lubricant is applied to from 55 to 80% of the surface area of the heat-seal resin layer of the separable part. The wettability index of both the thermoplastic resin film substrate layer surface and the heat-seal resin layer surface is from 34 to 73 mN/m.Type: GrantFiled: February 15, 2005Date of Patent: April 7, 2009Assignee: Yupo CorporationInventors: Takashi Funato, Takatoshi Nishizawa, Masaki Shiina
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Patent number: 7504143Abstract: The present invention provides novel multilayered plane or tubular food package casings or films for foodstuff packages, such as sausage casings or the like, having a lamination structure of at least six, preferably at least seven layers.Type: GrantFiled: June 6, 2003Date of Patent: March 17, 2009Assignee: Kuhne Anlangenbau GmbHInventors: Hermann-Josef Schief, Jürgen Michael Schiffman
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Patent number: 7501168Abstract: The present invention for the first time furnishes a multilayer planar or tubular food casing or film for food packagings such as, e.g., sausage casings, shrink bags or the like, which comprises a layered structure having at least five, preferably at least seven layers.Type: GrantFiled: June 6, 2003Date of Patent: March 10, 2009Assignee: Kuhne Anlagenbau GmbHInventor: Jurgen Schiffmann
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Patent number: 7462391Abstract: A multi-layered veneer for a tire sidewall is disclosed wherein one or more layers of the veneer include at least one pigment to provide a desired visual effect for the tire sidewall. In one embodiment, the multi-layered veneer includes a tie layer and a first thermoplastic layer bonded to the tie layer. The tie layer is capable of bonding the veneer to a sidewall compound of a tire sidewall. The first thermoplastic layer includes a thermoplastic material and the tie layer includes no less than about 80% by weight of a synthetic polymer chosen from EPDM, EPR, polyethylene, or combinations thereof. The synthetic polymers have a Mooney Viscosity (ML 1+4 at 125° C.) from about 5 to about 40, and the EPDM and EPR have an ethylene content of about 70% by weight to about 99% by weight of the polymer. One or more pigments are dispersed in the tie layer and/or the first thermoplastic layer so as to provide the visual effect.Type: GrantFiled: May 17, 2006Date of Patent: December 9, 2008Assignee: The Goodyear Tire & Rubber CompanyInventors: Aaron Scott Puhala, Bruce Raymond Hahn, Junling Zhao, Tarah Pecora Shpargel
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Patent number: 7435480Abstract: An infusion solution bag is made of a particular laminated film which contains a heat-resistant resin layer, an oxygen gas barrier layer and a sealant layer laminated through an adhesive resin layer by thermal lamination, which is a solventless method.Type: GrantFiled: March 28, 2005Date of Patent: October 14, 2008Assignee: Nakamoto Packs Co., Ltd.Inventors: Hitoshi Sasaki, Tadayuki Mukai, Seiichi Okude
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Patent number: 7427430Abstract: High gas barrier, delamination-resistant polyamide compositions suitable for extended shelf-life packaging applications are provided. Also provided are polyamide compositions exhibiting high oxygen scavenging capability. The polyamide compositions comprise mXDA-IPA containing copolymers which provide excellent properties to the complete polyamide compositions. Also provided are direct blends of the polyamide compositions with other polymers. The polyamide products are particularly suited for producing barrier packaging articles such as monolayer or multi-layer films, sheets, thermoformed containers and molded bottles. Such articles are useful in a variety of oxygen-sensitive food, beverage, pharmaceutical, and health care product packaging applications.Type: GrantFiled: December 29, 2005Date of Patent: September 23, 2008Assignee: Honeywell International Inc.Inventors: Sangkeun Rhee, Edward P. Socci, Clark V. Brown, John V. Facinelli
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Patent number: 7384679Abstract: A film structure having an inner barrier layer comprised of a blend of a polyamide and ethylene vinyl alcohol copolymer. The polyamide is present in the blend in an amount of from 15-40%, and most preferably from 25-30%. The inner barrier layer is laminated on each side with a layer of a polyamide. The preferred polyamide is nylon, and particularly nylon 6. In a preferred embodiment, the film structure is layered with an oxide or ceramic layer. Included is a method of manufacturing the film and for using the film structure to package a product in a retort packaging process.Type: GrantFiled: August 16, 2004Date of Patent: June 10, 2008Assignee: Pechiney Emballage Flexible EuropeInventors: Robert J. Blemberg, Kevin J. Curie, Eric Cudnohoske
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Patent number: 7365142Abstract: The present invention is directed to enantioselective polyelectrolyte complex films. Further, said films may be free or isolated membranes, or coatings on substrates such a porous substrates, capillary tubes, chromatographic packing material, and monolithic stationary phases and used to separate chiral compounds. The present invention is also directed to a method for forming such enantioselective polyelectrolyte complex films.Type: GrantFiled: August 7, 2006Date of Patent: April 29, 2008Assignee: Florida State University Research Foundation, Inc.Inventors: Joseph B. Schlenoff, Hassan Rmaile
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Patent number: 7354635Abstract: The present invention is related to a heat sealable coextruded multilayer packaging film peelable on a variety of substrates including polyethylene, polypropylene, polyester, polyvinyl chloride, polyamide, polyacrylonitirle and paper, comprising at least one peelable layer from a pre-compounded precursor formulation containing: ?50 to 80% by weight of an ethylene homo and/or copolymer, ?15 to 25% by weight of a styrene homo or/and copolymer, ?5 to 20% by weight of a thermoplastic elastomeric styrene-butadiene-styrene block copolymer, characterised in that the peel force in said peelable seal film produced by said pre-compounded precursor is modified by the presence in said precursor in the final extrusion step of 5 to 25, and preferably 10 to 20% by weight of homogeneously branched LLDPE and/or polybutene-1.Type: GrantFiled: October 22, 2002Date of Patent: April 8, 2008Assignee: Amcor Flexibles TranspacInventors: Tony Malfait, Patrick Rosseau, Erik Bogels, Luc Veys
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Publication number: 20080014402Abstract: The invention provides a method for imparting curvature to a substantially planar material comprising placing substantially planar material in a smart bag, and heat shrinking the smart-bagged material, wherein curvature is imparted to the smart-bagged material upon heat-shrinkage (e.g., placing an aerogel blanket with fibrous batting in a smart bag, applying vacuum and sealing the bag, shipping the flat bagged material to a work-site, heat-shrinking the bag to impart annular geometry, and securing the bagged insulation around an oil pipeline). Methods are included for preparing a smart bag of the invention.Type: ApplicationFiled: July 17, 2007Publication date: January 17, 2008Applicant: ASPEN AEROGELS,INC.Inventor: Aaron R. Tomich
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Patent number: 7282267Abstract: Multilayers comprising at least one laminate formed in sequence by the following layers: A) one thermoprocessable fluoropolymer layer comprising units deriving from vinylidenfluoride (VDF); B) one polyamide layer blended with 0.01%-5% by weight of a diamine or one polyamide layer having at least 20 ?eq/g of —NH2 groups, or one thermoprocessable polymer layer containing (—COO—) units and/or —CN groups; and C) one layer based on chlorinated polyvinylchloride (CPVC) containing from 58% to 75% by weight of chlorine.Type: GrantFiled: February 21, 2006Date of Patent: October 16, 2007Assignee: Solvay Solexis, S.p.A.Inventors: Julio Abusleme, Claudia Manzoni, Giambattista Besana
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Patent number: 7276294Abstract: A paperboard laminate useful for making gable top juice cartons is provided. The laminate provides for a high melting point polymer such as a semi-crystalline nylon to be applied directly to a board surface as an oxygen barrier layer. An anti-scalping layer is also provided by a polar polymer which is connected by a tie layer to an outermost skin coat layer. Positioned between the skin coat layer and the oxygen barrier layer are one or more bulk layers of polyolefins. The resulting laminate affords a juice carton which has good oxygen barrier and Vitamin C retention properties, is resistant to overactivation during heat sealing, has minimal scalping of d-limonene and essential oils, and has excellent bulge resistance.Type: GrantFiled: May 8, 2003Date of Patent: October 2, 2007Assignee: BRPP, LLCInventors: Kevin Cable, Steven Frohock
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Patent number: 7273645Abstract: A fluorocopolymer which comprises (A) polymerized units based on tetrafluoroethylene, (B) polymerized units based on ethylene and (C) polymerized units based on itaconic anhydride or citraconic anhydride, wherein the molar ratio of (A)/(B) is from 20/80 to 80/20, and the molar ratio of (C)/((A)+(B)) is from 1/10000 to 5/100, and which has a volume flow rate of from 1 to 1000 mm3/sec. The fluorocopolymer is excellent in the fuel barrier properties and in the adhesive properties to a non-fluorinated polymer.Type: GrantFiled: January 14, 2004Date of Patent: September 25, 2007Assignees: Asahi Glass Company, Limited, UBE Industries, Ltd.Inventors: Atsushi Funaki, Naoko Sumi, Eiichi Nishi
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Patent number: 7270860Abstract: A multilayer heat-sealable chlorine-free odor barrier film having relatively low modulus, high interlaminar strength, and low noise upon flexing is provided. The film comprises an odor barrier layer of an amorphous polyamide resin blended with an anhydride-modified olefinic polymer or copolymer. The film also includes at least one heat-sealable skin layer, preferably two such skin layers on opposite sides of said odor barrier layer, composed of an ethylene polymer or copolymer. Pouches formed of such multilayer films are also disclosed.Type: GrantFiled: May 20, 2004Date of Patent: September 18, 2007Assignee: Hollister IncorporatedInventor: Claudio Giori
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Patent number: 7252878Abstract: The invention relates to a high oxygen barrier, multilayer flexible packaging structure having a vacuum metallized, biaxially oriented polypropylene (met-BOPP) or metallized polyester (met-PET) film substrate; a high barrier EVOH layer coextruded or laminated directly on the metal-containing layer; and optionally an adjacent layer of anhydride modified polyolefin such as blend of LDPE, or MDPE, or PP and maleic anhydride modified adhesive resin on the EVOH layer.Type: GrantFiled: October 15, 2003Date of Patent: August 7, 2007Assignee: Toray Plastics (America), Inc.Inventors: Hiroaki Watanabe, Mark S. Lee
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Patent number: 7192640Abstract: A packaging laminate comprising a paperboard substrate for providing a base layer, a tear-resistant polymer layer applied to said substrate, and a heat seal polymer layer applied to said tear-resistant polymer. This laminate structure is particularly useful for blister pack packaging.Type: GrantFiled: January 31, 2003Date of Patent: March 20, 2007Assignee: International Paper CompanyInventors: Victor P. Holbert, David Reed
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Patent number: 7183005Abstract: Regrind is mixed with at least one low density metallocene polyethylene to increase the amount of regrind that can be used in a thermoformed article.Type: GrantFiled: August 20, 2004Date of Patent: February 27, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Anthony Poloso, Allen T Mika
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Patent number: 7175916Abstract: A composite of a resin member bonded to a vulcanized rubber member is obtained with using a rubber member vulcanized with a radical-generating agent (e.g., an organic peroxide) and a thermoplastic resin having at least 2 atoms, on average, selected from H and S atom per molecule, each atom having not less than 0.006 of an orbital interaction energy coefficient S represented by the following formula (1): S=(CHOMO,n)2/|Ec?EHOMO,n|+(CLUMO,n)2/|Ec?ELUMO,n| ??(1) wherein Ec: an orbital energy (eV) of a radical, CHOMO,n: a molecular-orbital coefficient of a highest occupied molecular orbital (HOMO) of an n-th H or S atom constituting a basic unit of the resin, EHOMO,n: an orbital energy (eV) of the HOMO, CLUMO,n: a molecular-orbital coefficient of a lowest unoccupied molecular orbital (LUMO) of the n-th H or S atom constituting the basic unit of the resin, ELUMO,n: an orbital energy (eV) of the LUMO, and above all represent a value calculated by a semiempirical molecular orbital method MOPACPM3.Type: GrantFiled: January 9, 2002Date of Patent: February 13, 2007Assignee: Daicel-Degussa Ltd.Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda
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Patent number: 7160604Abstract: The invention relates to laminated high oxygen barrier films for packaging applications and especially for shrinkable lidding applications. The multilayer heat shrinkable plastic film of the present invention comprises a laminate of at least two films 1 and 2, wherein film 1 has a hot glycerine shrinkage of more than 20% at 110° C. for 5 seconds and at least one of MD, TD directions; and film 2 has a hot glycerine shrinkage of less than 20% at 110° C. for 5 seconds in at least one of MD, TD directions.Type: GrantFiled: May 17, 2005Date of Patent: January 9, 2007Assignee: Flexopack S.A.Inventor: Dimitris Ginossatis
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Patent number: 7101947Abstract: The present invention is directed to enantioselective polyelectrolyte complex films. Further, said films may be free or isolated membranes, or coatings on substrates such a porous substrates, capillary tubes, chromatographic packing material, and monolithic stationary phases and used to separate chiral compounds. The present invention is also directed to a method for forming such enantioselective polyelectrolyte complex films.Type: GrantFiled: June 16, 2003Date of Patent: September 5, 2006Assignee: Florida State University Research Foundation, Inc.Inventors: Joseph B. Schlenoff, Hassan Rmaile
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Patent number: 7063885Abstract: A multi-layer, thermoplastic film bi-axially oriented at a stretching ratio ? to about 3.0:1 in the machine direction and at a stretching ratio ? about 6.0:1 in the transverse direction, which film comprises a layer a) comprising at least 50 wt. % of a crystalline or partially crystalline co-polyamide characterized by a Tg?100° C. and at least one outer heat-sealing layer b) comprising a polyolefin, said film being further characterized in that it has a % free shrink at 100° C.?3 in each direction.Type: GrantFiled: February 27, 2001Date of Patent: June 20, 2006Assignee: Cryovac, Inc.Inventors: Eugenio Longo, Roberto Forloni, Gregorio Di Cesare
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Patent number: 7051493Abstract: A multilayer film, which is particularly suited to packaging of cheese on a Hayssen® RT packaging machine, has a first layer comprising cyclic olefin copolymer having a glass transition temperature of at least 125° C., and a second layer comprising at least one member selected from the group consisting of cyclic olefin copolymer having a glass transition temperature of at least 125° C., polyamide, polyester, and polystyrene. The first and second layers are on opposite sides of a tensile axis of symmetry of the film. The film exhibits from 0 to 45 degrees of transverse edge curl, a yield point of at least 1200 psi at a temperature of 85° C., and an elongation at break of from 0 to 300 percent at 85° C.Type: GrantFiled: August 21, 2002Date of Patent: May 30, 2006Assignee: Cryovac, Inc.Inventors: Hubert J. Cook, Janet W. Rivett, Gautam P. Shah, Richard M. Dayrit, Kelly R. Ahlgren
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Patent number: 7049006Abstract: A multilayer structure based on polyamides, comprising: a first layer (1) formed from a polyamide P1 or from a blend of a polyamide P1 and a polyolefin PO1 having a P1 polyamide matrix, optionally, a layer (2a) formed from EVOH; a layer (2) formed from a blend of PA-6/12 copolyamides, one comprising by weight more 6 than 12 and the other more 12 than 6; a layer (3) formed from a polyamide P3, it being possible for P1 and P3 to be identical or different, the layers (1), (2), (2a) and (3) being successive and adhering to one another in their respective contact regions.Type: GrantFiled: November 2, 2004Date of Patent: May 23, 2006Assignee: ArkemaInventor: Christophe Lacroix
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Patent number: 7014920Abstract: An anti-fogging, stretched, multilayer film comprising a layer having an anti-fogging agent incorporated therein, the film having evaluated values for anti-fogging property of 28 mm2 or more at temperatures of ?5° C. and 15° C., respectively.Type: GrantFiled: April 16, 2001Date of Patent: March 21, 2006Assignee: Gunze LimitedInventor: Hiroki Kuriu
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Patent number: 7005169Abstract: Biaxially oriented polyester films which have a polyester-containing base layer (B) which additionally comprises poly(m-xyleneadipamide) and has been provided on at least one side with an overlayer (A) which has been coated with a barrier layer (D), said barrier layer comprising polyvinyl alcohol and a copolymer of maleic acid and acrylic acid, feature improved optical properties such as high gloss and low opacity and very good barrier properties, in particular toward the passage of oxygen, and, as a consequence of their insensitivity toward moisture, are suitable as a packaging material for foods or other consumable items.Type: GrantFiled: January 20, 2004Date of Patent: February 28, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Oliver Klein, Herbert Peiffer, Gottfried Hilkert
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Patent number: 6991837Abstract: Biaxially oriented polyester films which have a polyester-containing base layer (B) which additionally comprises poly(m-xyleneadipamide) and which is coated on at least one side with a barrier layer (D), the barrier layer comprising polyvinyl alcohol and a copolymer of maleic acid and acrylic acid, feature improved optical properties such as high gloss and low opacity, and very good barrier properties, in particular with respect to oxygen passage, and are also suitable as packaging materials for foods or other consumable items as a consequence of their insensitivity toward moisture.Type: GrantFiled: January 20, 2004Date of Patent: January 31, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Oliver Klein, Herbert Peiffer, Gottfried Hilkert
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Patent number: 6989198Abstract: A multi-layer structure excellent in the barrier properties against alcohol gasoline, particularly hydrocarbon components, and also excellent in the interlayer adhesion, low-temperature impact resistance, heat resistance and chemical resistance is provided. The stractive is a multi-layer structure comprising two or more layers including at least a layer (a) comprising (A) nylon 11 and/or nylon 12 and a layer (b) comprising (B) a polyamide resin (nylon 9T) consisting of a dicarboxylic acid component and a-diamine component, with 60 to 100 mol % of the dicarboxylic acid component being a terephthalic acid and 60 to 100 mol % of the diamine component being a diamine component selected from 1,9-nonanediamine and 2-methyl-1,8-octanediamine, and preferably further including a layer (c) comprising (A) nylon 11 and/or nylon 12 or (C) nylon 6.Type: GrantFiled: October 14, 2003Date of Patent: January 24, 2006Assignees: Kuraray Co., Ltd., Ube Industries, Ltd.Inventors: Haruhisa Masuda, Yuji Munesawa, Koichi Warino, Tomoharu Nishioka, Yoshio Iwata, Koji Nakamura, Kozo Tamura, Tetsuya Hara
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Patent number: 6979495Abstract: The present invention is directed to a biaxially oriented multi-layer film which comprises: (a) a core layer comprising a syndiotactic propylene homopolymer; and (b) at least one additional layer adjacent to the core layer comprising a polymer which is an ethylene or a propylene homopolymer, ethylene copolymer or terpolymer containing comonomers of propylene and/or butene-1. Optionally, there can be a skin layer applied to the exposed surface of the outer layer. The skin layer and/or the at least one additional layer is a polyolefin selected from the group consisting of isotactic polypropylene, polyethylene, ethylene-propylene random copolymer, ethylene-propylene block copolymer or ethylene-propylene-butene-1 terpolymer.Type: GrantFiled: December 21, 2001Date of Patent: December 27, 2005Assignee: ExxonMobil Oil CorporationInventors: Jay K. Keung, Robert G. Peet, Michael T. Heffelfinger
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Patent number: 6964816Abstract: Multilayer thermoformable structures for packaging film applications. The multilayer structures having at least a first layer of polyester, a second layer of a first adhesive and a third layer of a nylon blend formed into a flexible non-oriented film by coextrusion.Type: GrantFiled: September 9, 2002Date of Patent: November 15, 2005Assignee: Curwood, Inc.Inventors: Thomas Andrew Schell, Gregory Robert Pockat, Andrew John Lischefski
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Patent number: 6964800Abstract: The invention concerns a plastic-based multilayer structure, in particular for making tubes or conduits for transporting liquid fluids such as alcohol, liquid fuels derived from petrol, fuels containing oxygen compounds such as, for instance alcohol. More particularly it concerns a multilayer structure comprising an external layer (A) formed from a polyamide based composition with and an internal adjacent layer (B) formed from a polyfluorovinylidene based composition.Type: GrantFiled: May 28, 2002Date of Patent: November 15, 2005Assignee: Nyltec ItaliaInventor: Nicolangelo Peduto
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Patent number: 6962754Abstract: A structure made of a fluoropolymer layer and directly attached to one of its sides a tie layer based on a polyamide which results from the condensation of at least one diacid and at least one diamine of the following formula (1): in which R1 represents H or -Z1-NH2 and Z1 represents an alkyl, a cycloalkyl or an aryl having up to 15 carbon atoms and R2 represents H or -Z2-NH2 and Z2 represents an alkyl, a cycloalkyl or an aryl having up to 15 carbon atoms, it being possible for R1 and R2 to be identical or different. The tie resin may also be a copolymer having polyamide blocks and polyether blocks, the polyamide blocks resulting from condensation of at least one diacid and at least one diamine of formula (1). The invention also relates to a structure comprising a fluoropolymer layer, the tie layer and a substrate layer, respectively, as well as to a structure comprising a tie layer, respectively.Type: GrantFiled: June 19, 2002Date of Patent: November 8, 2005Assignee: ARKEMAInventors: Philippe Bussi, Christophe Lacroix, David Silagy
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Patent number: 6924013Abstract: The present invention relates to a coextrusion binder useful for petrol tanks of HDPE/binder/EVOH or PA/binder/HDPE structure.Type: GrantFiled: April 6, 2000Date of Patent: August 2, 2005Assignee: Arkema (formerly ATOFINA)Inventors: Jean-Claude Jammet, Christophe Le Roy, Xavier Marical, Jérôme Pascal
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Patent number: 6911244Abstract: The present invention relates to a film structure and a method of manufacturing the same. More specifically, the film structure may include a barrier material made from EVOH, nylon or other thermally sensitive barrier material encapsulated by a first adhesive material. The barrier material and the first adhesive material form a barrier layer and a first set of adhesive layers when coextruded. The barrier layer and the first set of adhesive layers may be coextruded at the same or a similar temperature to form a first extrudate. The extrudate may be encapsulated by or otherwise coextruded with a second adhesive material to form a second extrudate at a higher temperature than the first extrudate that then may be formed into a flat sheet via a die. The first set of adhesive layers protects the barrier layer from high temperatures and long residence times related to the coextrusion/lamination process that may degrade the barrier layer.Type: GrantFiled: December 20, 2002Date of Patent: June 28, 2005Assignee: Pechiney Emballage Flexible EuropeInventors: Robert J. Blemberg, Gregory L. Petkovsek, Chad M. Perre
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Patent number: 6893729Abstract: The present invention is to provide a laminated resin molding comprising a polyamide-based resin composition as an outer layer and being excellent in interlayer adhesion strength, in particular a laminated resin molding comprising a fluorine-containing resin as an inner layer. The present invention is a laminated resin molding which comprises a layer (A) comprising a polyamide-based resin composition and a layer (B) laminated to said layer (A), said layer (B) comprising a fluorine-containing ethylenic polymer having a carbonyl group, and said polyamide-based resin composition having a functional group, in addition to an amide group, selected from the group consisting of hydroxyl group, carboxyl group, ester group and sulfonamide group in a total amount of 0.05 to 80 equivalent percent relative to the amide group.Type: GrantFiled: February 19, 2001Date of Patent: May 17, 2005Assignee: Daikin Industries, Ltd.Inventors: Takeshi Inaba, Taketo Kato, Shigehito Sagisaka, Takuya Arase, Tetsuo Shimizu
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Patent number: 6893672Abstract: The present invention relates to a multilayer polymeric film structure and a food package made therefrom. Specifically, the present invention relates to a seven-layer non-EVOH structure having six layers of alternating nylon and adhesive, and a seventh layer of a heat sealable polymer. Either the sixth layer comprising the adhesive or the seventh layer comprising the heat sealable polymer may further comprise a polymer, preferably polybutylene, polypropylene and/or high density polyethylene, that may allow the film structure to be easily peelable when heat sealed. Moreover, the present invention relates to food packages made by the film structures having a easy-open peelable seal component contained therein.Type: GrantFiled: December 6, 2001Date of Patent: May 17, 2005Assignee: Pechiney Emballage Flexible EuropeInventor: Brian Ingraham
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Patent number: 6887538Abstract: A barrier laminate useful for the formation of orange juice and citrus beverage cartons is provided. The laminate provides a skin coat of a MDPE which provides a barrier to water vapor transmission through the laminate. The reduced water vapor flow decreases the bulge rate of the resulting carton.Type: GrantFiled: November 29, 2000Date of Patent: May 3, 2005Assignee: BRPP, LLCInventors: Alan W. Denney, Linnea Brady Keen
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Patent number: 6887581Abstract: The present invention provides a laminate for automobile parts having a layer A made from a polyamide resin composition containing 70-99 wt % of (a) a specific polyamide polymer, and 1-30 wt % of (b-1) an ethylene copolymer containing an epoxy group and/or (b-2) an ethylene copolymer modified by an acid anhydride, and a layer B made from a resin composition containing (c-1) a polyethylene resin modified by an acid anhydride and/or (c-2) a polyethylene resin containing an epoxy group, wherein the layer A and the layer B are heat-sealed, except when (1) the layer A contains (b-1) alone as the ethylene copolymer and the layer B contains (c-2) alone as the polyethylene resin; and when (2) the layer A contains (b-2) alone as the ethylene copolymer and the layer B contains (c-1) alone as the polyethylene resin. The laminate of the present invention is superior in strength, stiffness and gasoline barrier property that the automobile parts are required to have.Type: GrantFiled: April 26, 2002Date of Patent: May 3, 2005Assignees: Toyo Boseki Kabushiki Kaisha, Toyoda Gosei Co., Ltd.Inventors: Tsutomu Tamura, Hideki Eguchi, Junji Koizumi, Satoru Watanabe
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Patent number: 6878453Abstract: A multilayer comprising at least one layer A) of at least one thermoprocessable polymer containing at least 5% by weight of chlorinated polyvinyl chloride (CPVC) and one layer B) based on polyamides having an amount of —NH2 end groups in the range 20-300 ?eq/g.Type: GrantFiled: May 31, 2002Date of Patent: April 12, 2005Assignee: Ausimont S.p.A.Inventors: Julio A. Abusleme, Claudia Manzoni, Giambattista Besana
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Patent number: 6872459Abstract: This invention relates to the laminated material for food packaging, and its manufacturing process. The laminated material (10) consists of the quality keeping intermediate layer (12) laminated inside the paper core layer (11) and the core layer and the heat sealable innermost layer (13). The quality keeping intermediate layer comprises of an extrusion coatable blend polymer consisting of polymer component A 50-95% of nylon-MXD6 or EVOH and, polymer component B 5-50% of nylon 6, nylon 6, the blends or PET. The quality keeping intermediate layer is extruded and laminated directly in the core layer, the innermost layer contains at least the linear low density polyethylene which has a narrow molecular weight distribution, and has the properties parameter of mean density of 0.910-0.925, 100-122 degrees C. peak melting point, melt flow index of 5-20, swelling ratio (SR) of 1.4-1.6, and 5-50 micrometer layer thickness.Type: GrantFiled: September 18, 1999Date of Patent: March 29, 2005Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Peter Frisk, Norio Kobayashi, Hiroaki Ogita
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Patent number: 6861127Abstract: Thermoformable plastic films can be formed into bags, pouches, trays, etc. which are useful when packaging foodstuffs and other products. These films enjoy widespread use in the packaging of meat and other oxygen sensitive products due to the gas permeation barrier provided. Thermoformable packaging films comprise one or more layers of thermoplastic, including olefinic copolymers, amorphous and crystalline nylons, ionomeric polymers, and polyolefins. By selecting the type and combination order of thermoplastics, a packaging film was developed that provides excellent impact and abrasion resistance, sealability, thermoformability, and optical clarity.Type: GrantFiled: October 20, 1999Date of Patent: March 1, 2005Assignee: Curwood, Inc.Inventors: Amy Lou Glawe, Adriana Nobre Rubo, Stephen James Vicik
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Patent number: RE39000Abstract: A method of modifying the surface of a solid polymer substrate comprising the steps of a) generating radicals on the substrate surface by subjecting it to a gas plasma or by subjecting it to UV light, and b) treating the surface with a vapor of a monomer or a monomer mixture comprising cyano acrylate and/or isocyanate, where step b) starts before step a), simultaneously with step a), under step a), or follows immediately after step a), and a polymer substrate modified accordingly; a method of binding an organic binder material to a surface of a solid polymer substrate comprising the steps of modifying the surface of the substrate by said method, and bringing the organic material in contact with the surface of the substrate, and a polymer bonded to an organic material by the last mentioned method.Type: GrantFiled: June 27, 1997Date of Patent: March 7, 2006Assignee: NKT Research A/SInventors: Kristian Glejbol, Bjorn Winther-Jensen