Polymer Of Monoethylenically Unsaturated Hydrocarbon Patents (Class 428/476.1)
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Patent number: 6620473Abstract: An in-mold decorating label, which comprises a thermoplastic resin film substrate layer (I) having provided on its backside a heat-sealable resin layer (II), the heat-sealable resin layer (II) containing a polyethylenic resin and at least one of (i) a fatty acid amide having a molecular weight of 300 or more and (ii) an organic or inorganic fine powder having an average particle size larger than thickness of the heat-sealable resin layer (II). This label for use in in-mold decorating has excellent feeding and discharging properties upon printing and workability during sheeting, which facilitates insertion of the label into a metal mold during in-mold decorating, and provides a label-laminated container which does not suffer from blister generation and has a large welding force between the container and the label.Type: GrantFiled: April 16, 2001Date of Patent: September 16, 2003Assignee: Yupo CorporationInventors: Takatoshi Nishizawa, Masaki Shiina, Hironobu Taniguchi
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Patent number: 6605327Abstract: A multilayer automotive hose includes an innermost layer of elastomer material, and a separate outermost layer of elastomer material, each including between about 40% and about 80% vinylacetate by weight in a copolymer. The elastomer layers are formed by an extrusion process. The vinylacetate is copolymerized with polyethylene. Each of the elastomer layers has a fully saturated backbone. As a result, each of the innermost and outermost layers is a non-thermoplastic elastomer.Type: GrantFiled: October 16, 2000Date of Patent: August 12, 2003Assignee: Dana CorporationInventors: Marty A. Ramey, Ron H. Moody
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Patent number: 6602565Abstract: A method of producing a fuel hose having superior adhesive reliability with superior initial adhesive strength between a tubular fluororesin inner layer and a thermoplastic resin outer layer and with restrained deterioration in adhesive strength after heat aging and immersion into fuel under severe conditions such as an inside of an engine compartment. The method includes plasma treatment on a peripheral surface of the tubular fluororesin inner layer, at least one treatment of water treatment and silane coupling agent treatment on the plasma treated surface and formation of the thermoplastic resin outer layer on the treated peripheral surface.Type: GrantFiled: August 6, 1999Date of Patent: August 5, 2003Assignee: Tokai Rubber Industries, Ltd.Inventors: Kazutaka Katayama, Hiroaki Ito, Takahiro Nishiyama, Koyo Murakami, Tomonori Hayakawa
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Patent number: 6602590Abstract: The invention relates to high gas barrier packaging films exhibiting good shrinkage and containing an antifog composition for modified atmosphere packaging of foods and the like. The films are useful for producing modified atmosphere packages that preserve and enhance the shelf life of food and non-food oxygen sensitive items. The films exhibit excellent shrinkage, permanent antifog, easy processing and low cost of manufacture.Type: GrantFiled: May 8, 2001Date of Patent: August 5, 2003Assignee: Honeywell International Inc.Inventors: Robert R. Ting, Earl L. Hatley, Jeffrey D. Moulton
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Patent number: 6599639Abstract: A coextruded, retortable film includes a core layer having an ethylene/vinyl alcohol copolymer; two intermediate layers including a polyamide; two adhesive layers including a polymeric adhesive; and two outer layers including low density polyethylene, medium density polyethylene, high density polyethylene, ethylene/alpha olefin copolymer, propylene homopolymer, and/or propylene/alpha olefin copolymer. A method of packaging a product using this film, and a package, are disclosed.Type: GrantFiled: March 16, 2001Date of Patent: July 29, 2003Assignee: Cryovac, Inc.Inventors: Richard M. Dayrit, Steven T. Calvert, Stephen J. Schwarz, Daniel L. McKamy, Brian Rivers, Bobby Ayers
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Patent number: 6592957Abstract: The present invention relates to a multi-layer hose for automobile cooling systems which comprises at least two layers of inner layer and outer layer wherein: (1) the material for inner layer is a composition which contains a polymer containing a carboxyl group and/or its derivative group in the molecule and a dynamically crosslinked olefin thermoplastic elastomer, the content of the polymer containing a carboxyl group and/or its derivative group thereof in the molecule being 5-50% by weight based on the total weight of the composition and (2) the material for outer layer comprises a polyamide thermoplastic resin.Type: GrantFiled: March 30, 2001Date of Patent: July 15, 2003Assignees: Asahi Kasei Kabushiki Kaisha, Honda Giken Kogyo Kabushiki KaishaInventors: Kensuke Uchida, Toshiro Ijima
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Patent number: 6589616Abstract: 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: GrantFiled: September 28, 2001Date of Patent: July 8, 2003Assignee: Alcan Technology & Management Ltd.Inventors: Olivier Yves A. Muggli, Erwin Pasbrig
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Patent number: 6582786Abstract: 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: GrantFiled: June 14, 2001Date of Patent: June 24, 2003Assignee: Nike, Inc.Inventors: Henry W. Bonk, David J. Goldwasser, Paul H. Mitchell
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Patent number: 6582828Abstract: A thermoformable, puncture-resistant multi-layered film with surface slip, prepared by coextrusion and built up from polyolefin-based, polyamide-based and adhesion promoting polymer layers and its use for packaging sharp-edged goods, in particular foodstuffs.Type: GrantFiled: January 9, 2001Date of Patent: June 24, 2003Assignee: Wolff Walsrode AGInventor: Gregor Kaschel
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Patent number: 6582787Abstract: A blow molded container for high purity liquid chemicals having (1) an inner layer formed of a high purity resin comprising at least one member including olefinic polymers of ethylene, propylene, butene-1, 4-methyl-pentene-1, hexene-1 or octene-1 and copolymers of ethylene and olefins other than ethylene; (2) an intermediate layer of a solvent-barrier resin including polyamides, polyvinyl alcohols, poly(ethylene-co-vinyl alcohols), polyesters and polyphenylene oxides; and (3) an external layer formed of a light-shielding substance-containing resin composition. The lowest absorbance of the total layers of the container is greater than 2.0 measured at a wavelength of not more than 400 nm. The total layers also have an absorbance that does not exceed 1.62 measured at a wavelength of 600 nm. The container is especially good for holding photoresist liquids.Type: GrantFiled: October 5, 1999Date of Patent: June 24, 2003Assignee: Aicello Chemical Co., Ltd.Inventors: Keiji Kawai, Yoshiaki Ito
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Patent number: 6582808Abstract: A packaging laminate for a container which enables a blend monolayer to be effectively extrusion coated onto the paperboard substrate as the product contact layer without the need for tie layers or multilayer co-extrusion equipment. The blend monolayer has superior oxygen transmission resistance and has excellent pinhole resistance compared to straight polyethylene monolayer. The product contact layer consists of a blend of a polyolefin polymer, a polyamide, and a compatibilizer in a preferred embodiment. The monolayer blend is a low cost alternative to multilayer structures.Type: GrantFiled: August 1, 2001Date of Patent: June 24, 2003Assignee: International Paper CompanyInventors: Gregory J. Castle, Dolan R. Johnson, Keith S. Shih, A. Craig Bushman
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Patent number: 6579580Abstract: A composite container having a barrier property and comprising packaging material, the packaging material comprising a base material and a co-extruded laminate layered on the base material, the base material having a paper support with an inner surface and an outer surface and a polyolefin resin layer, the resin layer being attached on the outer surface of the paper support and constituting an outermost layer of the container, the laminate consisting of a polyolefin resin layer, a second adhesive layer, a barrier layer, a first adhesive layer, and another polyolefin resin layer being arranged in this order and having five layers in total.Type: GrantFiled: January 20, 2000Date of Patent: June 17, 2003Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kazuki Yamada, Hirotaka Tsunoda, Hideki Kurokawa
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Patent number: 6576312Abstract: A fuel transporting tube including an inner layer which contacts a fuel being transported and which is formed of a polybutylene naphthalate resin, an outer layer which is provided radially outwardly of the inner layer and which is formed of a polyamide resin or a polyolefin resin, and an intermediate layer which is provided between the inner layer and the outer layer and which is formed of a resin to adhere the inner and outer layers to each other.Type: GrantFiled: November 12, 1999Date of Patent: June 10, 2003Assignee: Tokai Rubber Industries, Ltd.Inventors: Hiroaki Ito, Shinji Iio
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Patent number: 6576308Abstract: This invention concerns a multilayer film useful as release sheet for sheet molding compounds, comprising a first skin layer, a second skin layer, a barrier layer for monomeric resins wherein the barrier layer is between the first and second skin layers and the first and second skin layers comprise a mixture of polyolefin and adhesive resin. This invention also pertains to the multilayer films method of production, as well as an SMC sheet employing the multilayer film.Type: GrantFiled: September 27, 1999Date of Patent: June 10, 2003Assignee: Pliant CorporationInventors: Daniel G. Denehy, Eric D. Tuttle
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Patent number: 6572965Abstract: A multiple layer adhesive and barrier film that combines good adhesion to substrates such as a foam material with a barrier to liquid permeation provides the substrate with a liquid barrier and adequate wear characteristics, particularly when the substrate is a foam material used as a carpet pad.Type: GrantFiled: May 11, 2000Date of Patent: June 3, 2003Assignee: The Dow Chemical CompanyInventors: Robert L. McGee, Mary Anne Wright
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Publication number: 20030099851Abstract: Polyolefin films having excellent barrier and metal adhesion characteristics and methods for producing the same are provided. The polyolefin film structures include a polyolefin core layer having a first and second side, a heat sealable layer adjacent to the first side of the core layer and substantially coextensive therewith, and a high barrier layer adjacent to the second side of the core layer and substantially coextensive therewith. The high barrier layer includes a blend of ethylene vinyl alcohol copolymer and nylon. Preferred embodiments of the present invention also provide for a metallized skin layer adjacent to the high barrier layer and substantially coextensive therewith.Type: ApplicationFiled: December 5, 2000Publication date: May 29, 2003Inventors: Eldridge M. Mount, Francis Tran, John A. Larter
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Patent number: 6569538Abstract: A thermoformable, multi-layered, symmetric, coextruded film having no tendency to roll up, is described. The coextruded film contains layers of polyamide and polyolefin or copolymers based on olefins.Type: GrantFiled: January 3, 2001Date of Patent: May 27, 2003Assignee: Wolff Walsrode AGInventor: Gregor Kaschel
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Patent number: 6565938Abstract: A resin composition comprising a saponified ethylene-vinyl acetate copolymer (A), a polyamide resin having a melting point not exceeding 160° C. (B), and a small proportion of a boron compound (C) and a laminate comprising a multi-lamellar shaped article comprised of the above resin composition layer (X) and a thermoplastic resin layer (Y).Type: GrantFiled: November 9, 2001Date of Patent: May 20, 2003Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki KaishaInventors: Masahiko Toyosumi, Kenji Ninomiya
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Patent number: 6562476Abstract: A clear, multilayer polymeric film that is desirable for thermoforming applications. The film in its various embodiments include two inner layers of nylon and/or a core layer of ethylene vinyl alcohol or ethylene vinyl alcohol copolymer sandwiched between the two inner nylon layers. The film also has an outer layer of a heat sealable polymer and may also have an outer layer of nylon. The film is coextruded, blown into a tubular shape, oriented, and cooled by the method of tubular water quenching. The film has various improved physical properties over the prior art, including properties of “memory”, clarity, gloss and low haze.Type: GrantFiled: October 4, 1999Date of Patent: May 13, 2003Assignee: Pechiney Emballage Flexible EuropeInventors: Mary E. Shepard, Scott W. Middleton, Robert J. Blemberg, Jerry F. Jesse
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Patent number: 6562443Abstract: 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: GrantFiled: July 22, 1998Date of Patent: May 13, 2003Assignee: Cryovac, Inc.Inventors: R. Karina Espinel, Ram K. Ramesh
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Patent number: 6555243Abstract: Thermoplastic multilayer composite, particularly in the form of a multilayer hose, a multilayer pipe or a multilayer container, containing at least one intermediate layer made of a molding compound on the basis of ethylene/vinyl alcohol copolymers between layers made of molding compounds on the basis of polyamide, the intermediate layer being bonded via at least one adhesion-promoting layer made of a molding compound on the basis of polyamide selected from the group of copolyamide 6/12, block copolyamide 6/12, polyamide 612, polyamide 610, a mixture of polyamide 6 and polyamide 12 with compatibilizer, a mixture of polyamide 6 and polyamide 11 with compatibilizer, with at least one neighboring layer made of a molding compound on the basis of polyamide 12, polyamide 11, polyamide 1010, polyamide 1012, or polyamide 1212.Type: GrantFiled: May 23, 2001Date of Patent: April 29, 2003Assignee: EMS-Chemie AGInventors: Albert Flepp, Michael Hoffmann
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Publication number: 20030064182Abstract: 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, and an adhesive tie layer between each skin layer and the odor barrier layer. Pouches formed of such multilayer films are also disclosed.Type: ApplicationFiled: April 24, 2002Publication date: April 3, 2003Inventor: Claudio Giori
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Publication number: 20030054126Abstract: Ethylene (co)polymers each having specified values of (a) density, (b) molecular weight distribution (Mw/Mn), (c) relationship between die swell (DS) and shear rate (&ggr;) in a region of shear rate (&ggr;), (d) relationship between stress (&sgr;) and maximum stress (&sgr;max) in a stress-strain curve in uniaxial stretching, (e) the ratio of sample diameter to initial sample diameter and the time for sample breakage during uniaxial stretching under a constant tension, blow molding process in which the thickness of aparison is adjusted by using the said ethylene (co)polymer, and the method of improving fire resistance in moldings, laminates and hollow moldings made by using the same.Type: ApplicationFiled: June 6, 2002Publication date: March 20, 2003Applicant: JAPAN POLYOLEFINS CO., LTD.Inventors: Koichi Ogawa, Haruhiko Kondou, Kei Takahashi, Daizo Tabuchi, Satoshi Kanazawa
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Patent number: 6531197Abstract: A container for containing moisture sensitive items has at least one wall having a desiccating agent wherein the desiccating agent absorbs moisture so as to inhibit such moisture from contacting moisture sensitive items contained within the bag. The wall preferably has a durable outer layer, a moisture barrier intermediate layer, and a desiccant containing inner layer. The desiccant containing inner layer preferably comprises microporous polyolefin impregnated with silica.Type: GrantFiled: September 4, 2001Date of Patent: March 11, 2003Assignee: Illinois Tool WorksInventor: Joachim Gregor Neteler
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Patent number: 6524420Abstract: A laminate composite is formed by forming a layer of a first thermoplastic resin in contact with a second compatible thermoplastic resin where the first layer comprising an acrylonitrile-butadiene-styrene layer and said second layer comprises a thermoplastic resin selected from the group consisting of comprises polycarbonate resin, phenylene ether resins, and polyamides.Type: GrantFiled: May 26, 2000Date of Patent: February 25, 2003Assignee: General ElectricInventors: Paul Anthony Bristow, Thomas Paul Dunton, Glen R. Tryson
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Publication number: 20030035946Abstract: The present invention provides a cover tape for packaging electronic components, which can prevent troubles associated with the peeling strength or appearing during mounting of the electronic components, which can be produced at a low cost, and which is transparent; that is, a cover tape which has a peeling strength not too high and not too low and small in difference between the maximum value and the minimum value and which has high transparency. Specifically, the present invention provides a cover tape for packaging electronic components, which can be heat-sealed to a plastic-made carrier tape having pockets capable of storing electronic components, formed regularly therein and which comprises (A) a biaxially oriented film layer made of a polyester, a polypropylene or a nylon and (B) a thermoplastic resin layer composed of 100 parts by weight of an ethylene copolymer and 10 to 100 parts by weight of a polystyrene, laminated to one side of the layer A.Type: ApplicationFiled: June 26, 2002Publication date: February 20, 2003Inventors: Hisao Nakanishi, Masayuki Hiramatsu
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Patent number: 6517920Abstract: A multilayered, coextruded tubular biaxially stretched casing, having oxygen and water vapor barrier properties plus reduced adhesion to contents, e.g., foodstuffs, contained within the casing, is disclosed. The tubular casing has five layers in the order of A|B|C|D|E. Outer layer A, contains as its principal component at least one polyamide. Layer B has oxygen barrier properties, and may be composed of a substantially hydrolyzed copolymer of ethylene and vinyl acetate. The core layer C contains as its principal component at least one polyamide. Layer D contains a modified polyolefin. Inner layer E (i.e., the layer that is in contact with the contents of the tubular casing) is a water vapor barrier layer, that contains as its principal component at least one member selected from the group consisting of homopolyolefin and copolyolefin. The tubular casing is useful for encasing foodstuffs, such as pasty or liquid foodstuffs.Type: GrantFiled: September 11, 2000Date of Patent: February 11, 2003Assignee: Wolff Walsrode AGInventors: Nils Schröder, Detlef Wolf
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Patent number: 6511724Abstract: The invention relates to pipes for conveying drinking water, including a main layer made of polyolefin covered on the outside with a layer of a thermoplastic polymer which is impervious to hydrocarbons, such as, for example, polyamides, polyvinylidene fluoride, ethyl/vinyl alcohol copolymers or polyesters. These pipes are particularly useful for pipes buried in soils that may be contaminated with hydrocarbons.Type: GrantFiled: March 8, 1996Date of Patent: January 28, 2003Assignee: ATOFINAInventors: Daniel Siour, Olivier Denizart
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Publication number: 20030017352Abstract: A coextruded, retortable film includes a core layer having an ethylene/vinyl alcohol copolymer; two intermediate layers including a polyamide; two adhesive layers including a polymeric adhesive; and two outer layers including low density polyethylene, medium density polyethylene, high density polyethylene, ethylene/alpha olefin copolymer, propylene homopolymer, and/or propylene/alpha olefin copolymer. A method of packaging a product using this film, and a package, are disclosed.Type: ApplicationFiled: March 16, 2001Publication date: January 23, 2003Inventors: Richard M. Dayrit, Steven T. Calvert, Stephen J. Schwarz, Daniel L. McKamy, Brian Rivers, Bobby Ayers
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Patent number: 6503637Abstract: A film comprising a blend of: i) a homopolymer of ethylene having a Mw/Mn of 3 or a copolymer of ethylene and up to 50% weight % of a C3 to C20 olefm, the copolymer having a CBDI of 50% or more; ii) a homopolymer of propylene or a copolymer of propylene and up to 50 weight % of a comonomer selected from the group consisting of ethylene and C4 to C20 alpha-olefms; and iii) a polymer produced in a high pressure process using a free radical initiator.Type: GrantFiled: December 6, 1999Date of Patent: January 7, 2003Assignee: Exxon Mobil Chemical Patents Inc.Inventor: Achiel Jos Van Loon
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Publication number: 20020168489Abstract: The invention relates to high gas barrier packaging films exhibiting good shrinkage and containing an antifog composition for modified atmosphere packaging of foods and the like. The films are useful for producing modified atmosphere packages that preserve and enhance the shelf life of food and nonfood oxygen sensitive items. The films exhibit excellent shrinkage, permanent antifog, easy processing and low cost of manufacture.Type: ApplicationFiled: May 8, 2001Publication date: November 14, 2002Inventors: Robert R. Ting, Earl L. Hatley, Jeffrey D. Moulton
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Patent number: 6479116Abstract: There are provided multi-layered structures comprising at least one layer that is an ethylene/alpha-olefin copolymer having a density of less than 0.916 g/cc and a melting peak temperature of greater than 118° C. The multi-layered structures comprise at least three layers. Also provided are articles of manufacture produced from the multi-layered structures such as films, containers, pouches, packages, tubing and the like.Type: GrantFiled: September 2, 1999Date of Patent: November 12, 2002Assignee: Eastman Chemical CompanyInventors: James Douglas Small, Jr., Jeffrey James Vanderbilt, Kathleen Diane Greer, James Edward Rhein
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Publication number: 20020164492Abstract: A multiple layer structure comprising a first and a second skin layer, each skin layer composed of a polypropylene containing polymer, and a radio frequency (“RF”) susceptible layer adhered to and between the first and second skin layers. The RF layer has a first component of a propylene based polymer, a second component of a non-propylene polyolefin, a third component of a radio frequency susceptible polymer, and a fourth component of a polymeric compatibilizing agent.Type: ApplicationFiled: March 21, 2002Publication date: November 7, 2002Inventors: Gregg Nebgen, Keith M.K. Anderson, Michael W. Scharf
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Patent number: 6475625Abstract: In a structure for joining a first plastic part and a second plastic part, the first plastic part is composed of at least one resin such as polyamide (PA), polybutylene terephthalate (PBT), polyacetal (POM), polyethylene terephthalate (PET), or polyphenylene sulfide (PPS), while the second plastic part is composed of high-density polyethylene (HDPE). Between the two parts, a metamorphic polyethylene layer exhibiting a good joining property for both the first and second plastic parts is interposed to join the parts.Type: GrantFiled: April 5, 2001Date of Patent: November 5, 2002Assignee: Kyosan Denki Co., Ltd.Inventors: Nobuharu Muto, Hiroshi Osaki
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Patent number: 6468661Abstract: A laminated multilayer film substrate for use in the production of banknotes having an oriented polypropylene core layer and at least one high density polyethylene layer on each side of the oriented polypropylene layer. The core layer contains microcavities formed by the addition of a cavitating agent. The resultant films exhibit good embossability, dead-fold characteristics and other properties, making them highly suited for the production of bank notes and other security documents.Type: GrantFiled: December 5, 2000Date of Patent: October 22, 2002Assignee: ExxonMobil Oil CorporationInventors: Gordon L. Benoit, Dennis E. McGee
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Publication number: 20020150763Abstract: A thermoforming multilayer film comprising successively: at least one layer chosen from layers A1 and A2, an optional layer B1, a layer B2, a layer B3, and an optional layer B4. A1 comprises a fluoropolymer A111 or a polymer A112 consisting essentially of alkyl(methyl)acrylate units or a blend of the two, layer A2 consists of ink, layer B1 comprises a fluoropolymer B111 or a polymer B112 consisting essentially of alkyl(meth)acrylate units or a blend of the two, layer B2 is based on a polyamide, layer B3 consists of polyolefin functionalized with unsaturated carboxylic anhydride and layer B4 comprises polyolefin. A process for producing the multilayer film comprising co-extrusion is described.Type: ApplicationFiled: January 22, 2002Publication date: October 17, 2002Applicant: ATOFINAInventors: David Silagy, Frank Bertoux, Phillipe Bussi, Anthony Bonnet
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Patent number: 6461716Abstract: 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: GrantFiled: June 24, 1999Date of Patent: October 8, 2002Assignee: The Procter & Gamble CompanyInventors: Yann-Per Lee, Hugh Joseph O'Donnell, Andrew Julian Wnuk, Todd Leon Mansfield, Gary Dean LaVon, Fernando Benvegnu
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Publication number: 20020142116Abstract: Sterilisible composite film for manufacturing pouch type forms of packaging and the like for e.g. liquid, pasty or solid foodstuffs. The sterilisible composite films according to the present invention contain a barrier layer that is impermeable to water vapour and gases in the form of a metal foil. On both sides of the barrier layer is at least one functional layer.Type: ApplicationFiled: February 17, 2000Publication date: October 3, 2002Inventors: Wilfried Jud, Hans-Rudolf Nageli
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Patent number: 6440566Abstract: This invention relates to a method for molding or curing a resin material using a multilayer release film as a barrier at the surface of the resin material. In one embodiment, the method comprises the surface of the resin material being in contact with the release film at a temperature of at least about 350° F. (about 180° C.). Here, the release film is non-oriented and comprises: (1) an enhancement layer which comprises a thermoplastic material; and (2) a first release layer which has a composition that is different from the enhancement layer, comprises a polymeric material, and is releasable from the resin material after the resin material is molded or cured. This invention also relates to a release film that may be used, for example, with the above method.Type: GrantFiled: October 1, 1999Date of Patent: August 27, 2002Assignee: Airtech International, Inc.Inventors: John Maligie, Thomas Malter
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Patent number: 6432548Abstract: The invention relates to compositions containing a polyamide matrix (A) and a polyolefin dispersed phase (B), in which compositions the polyamide has a melting point below that of PA-6 and the dispersed phase consists of at least one polyolefin (B) chosen from functionalized polyolefins (B1) and non-functionalized polyolefins (B2). Advantageously, (A) is PA-6/12 or PA-6/6,6. These compositions are useful for making monolayer or multilayer films by extrusion with EVA or PE.Type: GrantFiled: June 2, 2000Date of Patent: August 13, 2002Assignee: AtofinaInventors: Patrick Alex, Jean-Jacques Flat, Philippe Blondel, GĂ©rard Reignier
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Publication number: 20020102424Abstract: Herein is disclosed multilayer packaging articles comprising an oxygen barrier layer comprising ethylene/vinyl alcohol copolymer (EVOH) (an “EVOH oxygen barrier layer”); an oxygen scavenging layer adjacent thereto, wherein the oxygen scavenging layer comprises a polymer comprising an ethylenic backbone and a cycloalkenyl group having structure I: 1Type: ApplicationFiled: November 30, 2000Publication date: August 1, 2002Inventors: Hu Yang, Ta Yen Ching, Gangfeng Cai
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Publication number: 20020086174Abstract: A multilayer film structure having at least two layers wherein the first layer comprises poly(ethylene) having a density range from about 0.93 g/cc to 0.97 g/cc; and a second layer comprising poly(ethylene) having a density range from 0.89 g/cc to 0.93 g/cc wherein the second layer is capable of forming a heat seal. The multilayer film structure is capable of being laminated to another film structure or a packaging film component. The packages of the present invention are useful for the packaging of flowable materials.Type: ApplicationFiled: December 22, 1999Publication date: July 4, 2002Inventors: ROGER P. GENSKE, RUSSELL P. GEHRKE, ERIN M. DUFFY
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Patent number: 6410156Abstract: Oxygen scavenging barrier polyamide compositions exhibiting high oxygen scavenging capability as well as good coinjection stretch blow moldability characteristics suitable for making multilayer PET bottles with good clarity and delamination resistance are claimed in this invention. The polyamide compositions of this invention comprise a slow crystallizing polyamide blend comprising (i) an amorphous, semiaromatic polyamide homopolymer, copolymer or mixture thereof and (ii) a semicrystalline, aliphatic polyamide homopolymer, copolymer or mixture thereof wherein in the weight ratio of (i):(ii) ranges from about 99:1 to about 30:70; at least one polyamide-compatible, oxidizable polydiene; and at least one oxidation promoting metal salt catalyst. The multilayer PET bottles, made with the polyamide compositions of this invention as the barrier layer, are suitable for extended shelf-life packaging of oxygen-sensitive food and beverage products such as beer and juices.Type: GrantFiled: March 6, 2001Date of Patent: June 25, 2002Assignee: Honeywell International Inc.Inventors: Murali K. Akkapeddi, Edward P. Socci, Timothy J. Kraft, Darnell C. Worley, II, Jeffrey D. Pratt, Clark V. Brown
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Publication number: 20020061412Abstract: A polyamide resin-based heat-shrinkable multilayer film is caused to satisfy various properties required of a packaging material, especially a food packaging material, at high levels, and particularly exhibit a highest level of heat-shrinkability. The multilayer film comprises at least three layers including an outer surface layer (a) which comprises a polyester resin or a polyolefin resin; an intermediate layer (b) which comprises a mixture of 85-60 wt. % of an aliphatic polyamide resin, and 15-40 wt. % of an aromatic copolyamide resin which is a copolymer of aliphatic diamine/isophthalic acid and aliphatic diamine/terephthalic acid, and an inner surface layer (c) which essentially comprises a copolymer of ethylene and &agr;-olefin having a density below 0.915. The heat-shrinkable multilayer film has been biaxially stretched and then heat-treated to have hot-water shrinkabilities at 80° C.Type: ApplicationFiled: September 26, 2001Publication date: May 23, 2002Inventors: Takahisa Ueyama, Tadayoshi Itoh
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Patent number: 6391404Abstract: A multilayered film (220) suitable for medical uses is coextruded in a machine direction and comprises a first layer (222) defining a pair of peripheral edges (225,227) extending in a direction parallel to the machine direction. The film has a second layer (224) adhered to the first layer (222). The second layer (224) is positioned within the peripheral edges (225,227) defining a stripe (223).Type: GrantFiled: December 8, 1998Date of Patent: May 21, 2002Assignee: Baxter International Inc.Inventors: Larry A. Rosenbaum, Sidney T. Smith, Steven Giovanetto
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Publication number: 20020041971Abstract: This invention concerns a multilayer film useful as release sheet for sheet molding compounds, comprising a first skin layer, a second skin layer, a barrier layer for monomeric resins wherein the barrier layer is between the first and second skin layers and the first and second skin layers comprise a mixture of polyolefin and adhesive resin. This invention also pertains to the multilayer films method of production, as well as an SMC sheet employing the multilayer film.Type: ApplicationFiled: September 27, 1999Publication date: April 11, 2002Applicant: FUJI PHOTO FILM CO., LTD.Inventors: DANIEL G. DENEHY, ERIC D. TUTTLE
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Patent number: 6368723Abstract: The present invention relates to a film comprising at least one layer (A) of a mixture of polyamide and polyethylene, and optionally a layer (B) of polyethylene, such that if the polyethylene, of the layer (A) is not a metallocene polyethylene then the layer (B) is obligatory and essentially consists of metallocene polyethylene. These films are used for the moulding of polyesters, for fumigation or for the manufacture of packaging.Type: GrantFiled: October 26, 1999Date of Patent: April 9, 2002Assignee: AtoFinaInventors: Alain Bouilloux, Laurent Teze, Jean-Marc Andre
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Patent number: 6365248Abstract: A laminated barrier film which is harmless to the environment and combines the property of being easily tearable with moderate barrier properties. The laminated film comprises: an easily tearable barrier film (19) which is made up of a first layer (23) to a third layer (25), has undergone stretching in a stretch ratio of 2.8 or higher in each of the machine and transverse directions, and has undergone thermal fixing by heat treatment at 120 to 195° C. so that it has a shrinkage of 15 to 40% through 20-minutes immersion in pressurized 120° C. water; and a sealant film (21) laminated to the film (19). The first layer (23) and the third layer (25) each contains 60 to 85 parts by weight of Ny6, 15 to 40 parts by weight of MXD6, and 0.1 to 10 parts by weight of a modifier, while the second layer (24) contains 0 to 40 parts by weight of a thermoplastic resin such as Ny6, 60 to 95 parts by weight of MXD6, and 0.1 to 10 parts by weight of a modifier.Type: GrantFiled: March 14, 2000Date of Patent: April 2, 2002Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Takeo Hayashi, Masao Takashige
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Publication number: 20020034622Abstract: A packaged article, especially a respiring foodstuff such as cheese which generates or releases gas during storage, and a permeable multilayer biaxially oriented film suitable for allowing escape of such gas while minimizing transfer of oxygen across the film which has a thin layer of a blend of EVOH and nylon. In a preferred embodiment the low cost film having a high permeability to CO2 and low O2 permeability is used to package cheese.Type: ApplicationFiled: September 10, 2001Publication date: March 21, 2002Inventors: David Nicholas Edwards, Stephen James Vicik
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Publication number: 20020034634Abstract: This invention concerns a multilayer film useful as release sheet for sheet molding compounds, comprising a first skin layer, a second skin layer, a barrier layer for monomeric resins wherein the barrier layer is between the first and second skin layers and the first and second skin layers comprise a mixture of polyolefin and adhesive resin. This invention also pertains to the multilayer films method of production, as well as an SMC sheet employing the multilayer film.Type: ApplicationFiled: October 9, 2001Publication date: March 21, 2002Applicant: Pliant CorporationInventors: Daniel G. Denehy, Eric D. Tuttle