Contains Vapor Or Gas Barrier, Polymer Derived From Vinyl Chloride Or Vinylidene Chloride, Or Polymer Containing A Vinyl Alcohol Unit Patents (Class 428/36.6)
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Patent number: 6933055Abstract: The present invention provides compositions useful as a barrier layer in, for example, packaging products. The compositions generally comprise a blend of (i) a polyester resin, preferably an aromatic polyester resin such as polyethylene terephthalate (PET) and (ii) a polyamide material (e.g., MXD6). The blend optionally may further comprise (iii) an oxygen scavenging material. The present invention also provides containers (e.g., containers formed by expansion of preforms) having a multilayered body-forming portion including: a layer comprising the aforementioned blend; and one or more layers of a formable polymer composition. The present invention also provides methods of making such containers.Type: GrantFiled: August 7, 2002Date of Patent: August 23, 2005Assignee: Valspar Sourcing, Inc.Inventors: Paul E. Share, Keith R. Pillage
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Patent number: 6933028Abstract: A plastics material tube that is particularly resistant to fire, such that its wall is formed by a corrugated tube of flammable plastics material, by a smooth tube lining the outside of the corrugated tube and made of a plastics material that limits flame propagation, and by a fireproofing composition received between the two tubes.Type: GrantFiled: February 20, 2001Date of Patent: August 23, 2005Assignee: Nobel PlastiquesInventor: Pierre Milhas
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Patent number: 6929836Abstract: A multi-layered perform for substantially preventing the generation of strains and obtaining improved stress cracking resistance with excellent appearance characteristics includes a mouth portion, a body portion and a bottom portion and has at least the body portion and the bottom portion formed of an inner layer, an intermediate layer, and an outer layer by a compression molding. A multi-layered bottle is manufactured by performing a biaxial stretch blow molding of such multi-layered perform. The multi-layered bottle includes a mouth portion a shoulder portion, a body portion and a bottom portion. At least the shoulder portion, the body portion and the bottom portion include an inner layer, an intermediate layer and an outer layer.Type: GrantFiled: October 31, 2003Date of Patent: August 16, 2005Assignee: Toyo Seikan Kaisha, Ltd.Inventors: Atsushi Kikuchi, Yorihisa Hamada, Makoto Etoh, Kazunobu Watanabe
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Patent number: 6919114Abstract: The invention provides a container such as a bottle or flask, made heterogeneously from a material with a barrier effect and a polymer material, characterised in that the material with a barrier effect is an amorphous carbon material with a polymer tendency which is applied as a coating on a substrate of polymer material.Type: GrantFiled: March 25, 1999Date of Patent: July 19, 2005Assignee: SidelInventors: David Darras, Jean-Michel Rius, Patrick Chollet, Naïma Boutroy, Nasser Beldi, Fabrice Oge
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Patent number: 6913725Abstract: A plastic closure includes a closure shell having a base wall, a peripheral skirt with an internal thread for securing the closure to a container finish, and an annular lip extending from the closure skirt adjacent to the base wall and defining an inside lip surface at an acute angle to the closure base wall. A liner is compression molded in situ onto the base wall and peripherally within the lip. The liner has a liner base portion extending along the base wall and a peripheral portion extending along the inside surface of the lip. The liner has an interior surface—i.e.Type: GrantFiled: August 22, 2003Date of Patent: July 5, 2005Assignee: Owens-Illinois Closure Inc.Inventor: Philip D. Bourgeois
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Patent number: 6911242Abstract: A flexible film for packaging articles such as food is provided. The film comprises a layer of polyvinylidene (“PVdC”) homopolymer, polyvinylidene and methyl acrylate (“PVdC-MA”) copolymer or other polyvinylidene chloride copolymer. A dienophile such as, for example, ethyl trans-cinnamate, methyl trans-cinnamate, dibutyl maleate, dimethyl maleate or maleic anhydride is blended with the PVdC polymer or PVdC-MA copolymer to reduce yellowing of the film caused by degradation of the PVdC or PVdC-MA through heat or electron beam irradiation. Preferably a range of about 0.05% and about 5% by weight of the dienophile is added to the PVdC or PVdC-MA.Type: GrantFiled: January 14, 2003Date of Patent: June 28, 2005Assignee: Pechiney Emballage Flexible EruopeInventors: Roger Kaas, Chad Mueller
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Patent number: 6908652Abstract: An article of manufacture includes an oxygen scavenger and poly(lactic acid). The article can be in the form of a film, coating, gasket, liner, insert, sealant, or fibrous matte. A film includes at least one layer including an oxygen scavenger, and at least one layer including poly(lactic acid). A package can be made from the film for enclosing an oxygen-sensitive artice such as food. The poly(lactic acid) blocks the migration of odor causing byproducts of the oxygen scavenging process. A method includes providing a film including at least one layer including an oxygen scavenger; and at least one layer including the poly(lactic acid); and exposing the film to actinic radiation. A method for reducing migration of organoleptically significant compounds is also disclosed.Type: GrantFiled: September 18, 1997Date of Patent: June 21, 2005Assignee: Cryovac, Inc.Inventors: Nathanael R. Miranda, Drew V. Speer
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Patent number: 6893730Abstract: Oxygen barrier films having a greatly improved dynamic coefficient of friction, and specifically, oxygen barrier films having an exceptionally low dynamic coefficient of friction, reduced moisture sensitivity and good oxygen barrier properties over a wide range of relative humidities. The low coefficient of friction is obtained by using film layers which are blends of a polyamide component and a high density polyethylene which surround an oxygen barrier layer, such as an ethylene vinyl alcohol layer.Type: GrantFiled: September 24, 2002Date of Patent: May 17, 2005Assignee: Honeywell International Inc.Inventors: Jeffrey D. Moulton, Simon J. Porter
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Patent number: 6884483Abstract: Multilayer blow molded containers, which comprise a layer of an ethylene-vinyl alcohol copolymer (A) having an ethylene content of 5 to 60% by mol and a degree of saponification of 85% or more and a layer of a resin composition (B), characterized in that the resin composition (B) comprises 1 to 40% by weight of a thermoplastic resin (b1) having at least one functional group selected from the group consisting of boron-containing groups that are convertible to a boronic acid group in the presence of water and a boronic acid group (hereinafter, referred to as a boron-containing functional group), and 60 to 99% by weight of polypropylene (b2), exhibit excellent gas-barrier properties, have good interlayer adhesion, have excellent thermal stability, and are low in production cost.Type: GrantFiled: December 6, 2002Date of Patent: April 26, 2005Assignee: Kuraray Co., Ltd.Inventors: Nahoto Hayashi, William Scott Lambert, Hiroshi Kawai, Kaoru Ikeda, Shinji Tai
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Patent number: 6884482Abstract: A fuel container formed by bonding upper and lower sections, for which both the upper and lower sections are made by thermo-forming a multi-layer sheet that comprises an interlayer of a barrier resin (A) and inner and outer layers of a polyolefin (B), and of which the surface of the innermost layer is coated with a layer of a barrier material (C).Type: GrantFiled: March 27, 2001Date of Patent: April 26, 2005Assignee: Kuraray Co., Ltd.Inventors: Nahoto Hayashi, Hong-Ta James Chan, Keizo Michihata
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Patent number: 6875484Abstract: A multi-layer expansion-molded article of a polypropylene resin, which is obtained by molding a multi-layer parison comprising a foamed resin layer and a resin layer provided on the outer side of the foamed resin layer in a mold in such manner that at least part of the opposed inner surfaces of foamed resin layer in the parison are fusion-bonded to each other, and has a polypropylene resin layer on the surface of a foamed polypropylene resin layer, wherein a melt tension, MTfr (gf) and a melt flow rate, MFRfr (g/10 min) obtained by measurement to a polypropylene resin forming the foamed resin layer in the expansion-molded article satisfy the relationship [log MTfr>?0.74 log MFRfr+0.66], and a melt tension, MTur (gf) and a melt flow rate, MFRur (g/10 min) obtained by measurement to a polypropylene resin forming the resin layer on the surface of the foamed resin layer satisfy the relationship [log MTur>?1.02 log MFRur+0.47].Type: GrantFiled: August 1, 2000Date of Patent: April 5, 2005Assignee: JSP CorporationInventors: Naochika Kogure, Hiroyuki Gokuraku, Seiji Takahashi, Daisuke Imanari, Takashi Kitahama
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Patent number: 6863988Abstract: Monolayer packages comprised of an oxygen scavenging composition suitable for direct contact with package contents and recycle with other polyester bottles are disclosed. The oxygen scavenging composition is comprised of a modified copolymer which is comprised of predominantly polyester segments and an oxygen scavenging amount of oxygen scavenging segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. Use of these oxygen scavenging copolymers in bottles provides a clear and rigid monolayer bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolymers of this invention are over 99 wt % PET and contain less than 50 ppb of extractable components.Type: GrantFiled: October 25, 2001Date of Patent: March 8, 2005Assignee: BP Corporation North America Inc.Inventors: James M. Tibbitt, Paul J. Cahill, George E. Rotter, David P. Sinclair, Gary T. Brooks, Raymond T. Behrends
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Patent number: 6858275Abstract: An irradiated multilayer film has a first layer and a second layer. The first layer is an outer heat seal layer containing a blend of a highly branched homogeneous polymer and a semicrystalline polymer. The highly branched homogeneous polymer has at least 40 branches per 1000 methylene groups, an Mw/Mn less than 3.0, and a density of less than 0.89 g/cc. The highly branched homogeneous polymer is present in an amount of from about 1 to 50 weight percent, based on layer weight. The semicrystalline polyolefin has a density of at least 0.90 g/cc. The semicrystalline polyolefin is present in an amount of from about 60 to 99 weight percent, based on total layer weight. The second layer contains a thermoplastic polymer in a crosslinked polymer network. A process for making a packaging article includes coextruding the first and second layers, irradiating the resulting multilayer film, and thereafter heat sealing the first layer to itself or another component of the packaging article.Type: GrantFiled: April 17, 2003Date of Patent: February 22, 2005Assignee: Cryovac, Inc.Inventors: Isabella Ferri, Slawomir Opuszko, Nathanael Rustia Miranda
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Patent number: 6841211Abstract: The present invention relates to containers for flowable products having improved barrier and/or mechanical properties and methods for making said containers. These improvements are achieved by incorporating into at least one layer of the container structures a polymeric nanocomposite comprising a polymer and nanosize particles of a modified clay.Type: GrantFiled: May 12, 2000Date of Patent: January 11, 2005Assignee: Pechiney Emballage Flexible EuropeInventors: Robert Knoll, Chad Mueller
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Patent number: 6838141Abstract: A hose of a laminated structure which comprises a rubber layer composed of a rubber composition, and a laminate including a metal foil and a resin, the rubber composition including: (A) a rubber including at least one of an ethylene-propylene-diene terpolymer and an ethylene-propylene copolymer; (B) a peroxide vulcanizing agent; (C) a resorcinol compound; and (D) a melamine resin. The hose is light in weight, less costly, and has excellent gas barrier properties.Type: GrantFiled: August 19, 2002Date of Patent: January 4, 2005Assignee: Tokai Rubber Industries, Ltd.Inventors: Ayumu Ikemoto, Motoshige Hibino, Hidehito Ikeda, Kazutaka Katayama
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Publication number: 20040247809Abstract: Impermeable hollow body suitable as a fuel tank, made of thermoplastic material comprising at least one polyolefin and coated with a polyvinyl alcohol film impermeable to and insoluble in water owing to its crosslinking by a chemical agent and/or owing to the presence of an epoxy protective layer.Type: ApplicationFiled: April 19, 2004Publication date: December 9, 2004Inventors: Eric Dubois, Francois Dougnier, Stephane Leonard
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Patent number: 6818151Abstract: Oxygen barrier copolymers and methods of making the same are disclosed. The oxygen barrier copolymers comprise repeating units derived from vinylidene chloride and oxygen scavenging repeating units. The oxygen scavenging repeating units can comprise oxygen scavenging moieties that are cycloalkenyl. Oxygen barrier compositions, methods of preparing oxygen barrier compositions, and packaging articles comprising oxygen barrier copolymer are also disclosed.Type: GrantFiled: November 30, 2001Date of Patent: November 16, 2004Assignee: Chevron Phillips Chemical Company LPInventors: Hu Yang, Ta Yen Ching, Kevin Cai, Lennard Torres
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Patent number: 6805931Abstract: A plastic container has a diamond like carbon film 20b formed on the inner surface of the container 20 made of plastic material 20a. The thickness of the diamond like carbon film 20b is within a range from 0.05 to 5 &mgr;m. The container 20 coated with the diamond like carbon film can be used for a returnable bottle for beverage.Type: GrantFiled: June 3, 2003Date of Patent: October 19, 2004Assignee: Kirin Beer Kabushiki KaishaInventor: Kazufumi Nagashima
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Patent number: 6800346Abstract: The invention provides a container such as a bottle or flask, made heterogeneously from a material with a barrier effect and a polymer material, characterised in that the material with a barrier effect is an amorphous carbon material with a polymer tendency which is applied as a coating on a substrate of polymer material.Type: GrantFiled: September 26, 2000Date of Patent: October 5, 2004Assignee: SidelInventors: David Darras, Jean-Michel Rius, Patrick Chollet, Naïma Boutroy, Nasser Beldi, Fabrice Oge
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Patent number: 6794051Abstract: Transparent, multilayer, biaxially oriented polyester films having a) a base layer B composed of at least 50% by weight of a thermoplastic polyester and from 0 to 30% by weight of a cycloolefin copolymer and b) an outer layer composed of from 20 to 100% by weight of a cycloolefin copolymer, the glass transition temperature of the cycloolefin copolymers being less than 120° C., possess very good water vapor barrier properties and effective adhesion between the layers. These films are especially suitable for packaging foods and other consumables.Type: GrantFiled: May 20, 2003Date of Patent: September 21, 2004Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Gottfried Hilkert
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Patent number: 6793995Abstract: A structure comprising one or more layers of a polymer (A) comprising: the units (A1) and the units (A2) wherein the A2/(A1+A2) molar ratio is between 0 and 30%, is suitable as a barrier against oxygen permeation under high relative humidity. The structure is, thus, useful as packaging and as hollow bodies, such as pipes, bottles and containers.Type: GrantFiled: December 30, 2002Date of Patent: September 21, 2004Assignee: AtofinaInventors: Hélène Egret, Claude Bunel, Jean-Pierre Couvercelle, Michaël Werth, Yves Germain
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Patent number: 6790499Abstract: A mixture of a polyester, such as poly(ethylene terephthalate) PET, and an additive combination, when extrusion compounded exhibits a lower residual acetaldehyde content than does PET alone when similarly treated. The additive combination comprises compounds selected from at least two groups wherein the groups are (i.) poly(vinyl alcohol) or ethylene/vinyl alcohol copolymer, (ii.) polyhydric alcohols and (iii.) polyacrylamide, polymethacrylamide or copolymer of acrylamide or methacrylamide. The invention pertains to any polyester used in the manufacture of bottles or containers which in turn are used to store consumer materials, especially food, beverages and most especially water.Type: GrantFiled: December 20, 2001Date of Patent: September 14, 2004Assignee: Ciba Speicalty Chemicals CorporationInventors: Stephen M Andrews, Paul A. Odorisio, Dirk Simon
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Patent number: 6790496Abstract: A material for packaging a nicotine product comprising a polymer based on dimethyl-2,6-naphthalene dicarboxylic or 2,6-naphthalene dicarboxylic acid monomers, such as polyethylene naphtalate (PEN) or polytrimethylene naphtalate (PTN), or a liquid crystal polymer (LPC). The material may be laminated to another polymer or to metal foil.Type: GrantFiled: October 17, 2001Date of Patent: September 14, 2004Assignee: Pfizer Health ABInventors: Gustav Levander, Anders H. F. Karlsson, Ingemar Hildingsson
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Patent number: 6783857Abstract: Using a gas barrier resin composition including 83 to 15% by mass of a compound (A) having two or more hydroxyl groups in a molecule thereof and 17 to 85% by mass of a compound (B) in which at least one carboxyl group is bound to each of three or more consecutive carbon atoms in a molecule thereof, wherein the compound (B) is any one of a compound in which no anhydrous structure is made among the carboxyl groups and a compound in which at least one anhydrous structure is made among the carboxyl groups, or using a gas barrier coating agent including the compound (A), the compound (B) and a solvent, the present invention provides a gas barrier molded material, which has high gas barrier property in that it has less reduction of gas barrier property even in a high humidity atmosphere, has excellent transparency, does not generate poisonous gas when it is subjected to an incineration treatment, is friendly to the natural environment because of the non-use of organic solvents, and has good productivity.Type: GrantFiled: July 19, 2002Date of Patent: August 31, 2004Assignee: Unitika Ltd.Inventors: Arihiro Anada, Shoji Okamoto, Kenjin Shiba, Hayami Onishi
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Patent number: 6777052Abstract: The present invention provides a plastic container containing albumin solution and a packaged plastic container containing an albumin solution. The plastic container containing an albumin solution having an albumin concentration of 1 to 500 mg/ml, has at least one inlet/outlet for a liquid, and has a water vapor permeability of 1.5 g/m2/day·1013.25 hPa or less when the vapor permeability is measured at a pressure of 1013.25 hPa per surface area of 1 m2 for 24 hours at a temperature of 25° C. and at a relative humidity of 60%. The plastic container containing an albumin solution can be packaged with an outer packaging material to provide the packaged plastic container.Type: GrantFiled: March 27, 2002Date of Patent: August 17, 2004Assignee: Nipro CorporationInventors: Toshiya Kai, Hideaki Murata, Makoto Sato
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Patent number: 6770342Abstract: A multi-layer gas- and odour-barrier film comprising a gas- and odor-barrier layer a) and at least one outer layer b) comprising a blend of an ethylene-vinyl acetate copolymer, an ethylene-alkyl-acrylate or alkyl-methacrylate copolymer and from about 1 to about 15% by weight on the overall weight of the blend of a silicone elastomer.Type: GrantFiled: December 19, 2001Date of Patent: August 3, 2004Assignee: Sealed Air CorporationInventor: Livio Buongiorno
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Patent number: 6769227Abstract: A method of forming a package by heat sealing a trap-printed laminate to a support member (e.g., tray). The laminate has a free shrink in each of the transverse and machine directions of at least about 10% at 200° F. and at least about 21% at 240° F. The laminate has an oxygen transmission rate of no more than about 100 cubic centimeters. The outside layer of the laminate comprises at least about 40% of one or more relatively high-melt polymers each having a melting point at least about 25° F. higher than the lowest melting point polymer of the sealant layer. The first film has an oxygen transmission rate greater than the oxygen transmission rate of the second film.Type: GrantFiled: July 23, 2002Date of Patent: August 3, 2004Assignee: Cryovac, Inc.Inventors: Edward L. Mumpower, John R. Wolf
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Patent number: 6767600Abstract: A paper container is produced that has gas barrier properties, by employing a laminate having at least a (I) paper layer 101, a (II) gas barrier layer 103, and an (III) epoxy-group-containing resin composition layer 104. The (III) epoxy-group-containing resin composition layer consists of a resin composition that contains a polyolefin (a) having a melt flow rate of 0.1˜100 g/min and an epoxy-compound (b) which has two or more epoxy groups in the molecule and has a molecular weight of 3000 or less, epoxy-compound (b) being added in an amount of 0.01˜5 parts by weight with respect to 100 parts by weight of polyolefin (a). This (III) epoxy-group-containing resin composition layer has good adhesion with the (II) gas barrier layer, thus a laminate can be produced without employing a dry laminate adhesive agent or an extrusion laminate anchor agent. Accordingly, it is possible to avoid a deterioration in the work environment or an odor remaining in the final product from the use of organic solvents.Type: GrantFiled: January 24, 2001Date of Patent: July 27, 2004Assignee: Japan Polyolefins Co., Ltd.Inventor: Hiroshi Kasahara
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Patent number: 6761965Abstract: An irradiated multilayer film has a first layer and a second layer. The first layer is an outer heat seal layer containing a blend of a highly branched homogeneous polymer and a semicrystalline polymer. The highly branched homogeneous polymer has at least 40 branches per 1000 methylene groups, an Mw/Mn less than 3.0, and a density of less than 0.89 g/cc. The highly branched homogeneous polymer is present in an amount of from about 5 to 50 weight percent, based on layer weight. The semicrystalline polyolefin has a density of at least 0.90 g/cc. The semicrystalline polyolefin is present in an amount of from about 50 to 95 weight percent, based on total layer weight. The second layer contains a thermoplastic polymer in a crosslinked polymer network. A process for making a packaging article includes coextruding the first and second layers, irradiating the resulting multilayer film, and thereafter heat sealing the first layer to itself or another component of the packaging article.Type: GrantFiled: March 25, 2002Date of Patent: July 13, 2004Assignee: Cryovac, Inc.Inventors: Isabella Ferri, Slawomir Opuszko, Nathanael Rustia Miranda
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Patent number: 6759107Abstract: The present invention provides a thermoplastic resin composition having excellent oxygen absorption property. This thermoplastic resin composition comprises a thermoplastic resin (A), a multilayered polymer particle (B) and a transition metal salt (C), wherein the multilayered polymer particle (B) has at least one oxygen absorption layer, the oxygen absorption layer comprises a diene polymer (B1) containing a conjugated diene monomer as a polymerization component, and the transition metal salt (C) is contained in an amount of 1 to 5000 ppm in terms of a metal element thereof.Type: GrantFiled: July 7, 2000Date of Patent: July 6, 2004Assignee: Kuraray Co., Ltd.Inventors: Shinji Tai, Masakazu Nakaya, Hiroyuki Shimo, Toshiaki Sato, Takashi Yamashita, Yoshiki Mukoo
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Patent number: 6753370Abstract: A resin composition comprises a copolymer (A) comprising ethylene as a major component produced with a single-site catalyst, and an ethylene-vinyl alcohol copolymer (B) having an ethylene content of 20-60 mol. % and a degree of hydrolysis of 95% or above, the resin composition satisfying the equation (1): 1/99≦{weight of (A)}/{weight of (B)}≦<99/1 (1) A preferred resin composition comprises a copolymer (A) which has a density of 0.90-0.94 g/cm3 and the resin composition further comprises a carboxylic acid-modified polyolefin (C) and satisfies the equations (2) and (3): 60/40≦{weight of (A)}/{(weight of (B)}≦: 99/1 (2) 0.1/99.9≦X≦: 20/80 (3) wherein X={weight of (C)}/{total weight of (A) and (B)}. Another preferred resin composition comprises a copolymer (A) which has a density of 0.85-0.Type: GrantFiled: March 7, 2002Date of Patent: June 22, 2004Assignee: Kuraray Co., Ltd.Inventors: Shigeki Nakatsukasa, Hiroyuki Ohgi, Kazuyori Yoshimi
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Patent number: 6753275Abstract: A multi-layered woven side air curtain has pre-configured air holding cavities and a polymeric film laminated thereto. An adhesive polyether polyurethane or polyester polyurethane prime coat layer is first coated onto a textile substrate, and then a polymeric film, such as polyamide, polyolefin, or polyurethane is laminated thereto. The textile substrate may be woven of nylon, polyester, or other synthetic fibers. According to an alternative embodiment, a multi-layered composite film product can be used as a film laminate without the need for a prime coat adhesive layer being first applied to the textile substrate. In such a case, the adhesive prime coat is applied to the textile substrate in a single step via the film laminate itself. The side air curtain can be pre-configured or prefabricated to numerous varied designs and shapes prior to coating.Type: GrantFiled: August 3, 2001Date of Patent: June 22, 2004Assignee: Bradford Industries, Inc.Inventor: Manuel J. Veiga
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Patent number: 6753053Abstract: The laminated film of the present invention comprises: an outermost layer (A) comprising a polybutylene terephthalate homopolymer, a polybutylene terephthalate copolymer or a mixture of the polybutylene terephthalate homopolymer and the polybutylene terephthalate copolymer; and an innermost layer (B) comprising a heat-sealing resin, the outermost layer (A) having a shape factor of not less than 2.2, which shows a peak shape of Raman spectrum thereof and is represented by the following formula (1): Shape factor=La/Lb (1) wherein La and Lb represent peak widths being present on higher- and lower-frequency sides, respectively, relative to a perpendicular line drawn from a peak top to a base line formed by a tangent line taken before and after the peak based on carbonyl stretching vibration, and being taken along a horizontal line at a height corresponding to one half of an intensity of the peak. The laminated film is prevented from being curled upon heat-sealing.Type: GrantFiled: November 15, 2001Date of Patent: June 22, 2004Assignees: Shikoku Kakoh Co., Ltd., Mitsubishi Chemical CorporationInventors: Takashi Futagawa, Katsutoshi Ohno
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Patent number: 6746769Abstract: A blow molded container having barrier properties and including an upper wall portion having an opening, an intermediate sidewall portion positioned beneath the upper wall portion, and a base portion positioned beneath the intermediate sidewall portion to support the container. The container includes a molded outer layer having an inner surface and an outer surface formed from at least 40% of recycled plastic, and a carbon coating formed on the inner surface of the outer layer and adhered thereto and substantially coextensive with the outer layer, wherein said carbon coating has a thickness of less than about 10 microns.Type: GrantFiled: April 17, 2003Date of Patent: June 8, 2004Assignee: Plastipak Packaging, Inc.Inventor: William A. Slat
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Patent number: 6746622Abstract: Herein is disclosed an oxygen scavenging composition, comprising an oxygen scavenging polymer comprising units having structure I: wherein R is selected from the group consisting of —H and —C1-C6 alkyls and n is an integer greater than or equal to 1; and an oxidation catalyst. The oxygen scavenging polymer can be used to form an oxygen scavenging packaging article.Type: GrantFiled: February 8, 2002Date of Patent: June 8, 2004Assignee: Chevron Phillips Chemical Company LPInventors: Hu Yang, Ta Yen Ching, Lennard Torres
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Patent number: 6746750Abstract: The present invention provides a generally planar closed envelope device formed from material having vapor barrier properties, which envelope comprises a base layer (1) and a cover layer (4) applied to the base layer (1) and a continuous or discontinuous seal (4) therebetween, characterized in that: a) each of the base (1) and cover (3) layers carries a fluid composition (2) containing a liquid volatile material upon a selected area of the opposed faces thereof; f) the base (1) and cover (3) layers are formed by folding over a single piece of sheet material so as to bring the selected areas of the base (1) and cover (3) layers into opposing register with one another; and g) there is separable and reformable seal (4) between the base (1) and cover (3) layers to retain them in the folded configuration. The invention also provides a method for making such a device.Type: GrantFiled: June 19, 2000Date of Patent: June 8, 2004Assignee: AKI, Inc.Inventor: Derek Albert Bishopp
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Patent number: 6740378Abstract: The coated multilayer structure comprising a polymeric base layer, a zero valent material barrier layer, and a top coat on the zero valent material barrier layer, the top coat comprising a soluble compound capable of reducing the permeability of the multilayer structure to gas or vapor. The zero valent material barrier layer can also enhance barrier to UV light. A method for enhancing the gas or vapor barrier properties or the UV light barrier properties of a multilayer polymeric/inorganic structure is also disclosed. According to one embodiment, Si coated polyethylene terephthalate containers are coated with a gas or vapor barrier enhancing top coat. A method for recycling containers coated with a zero valent material barrier layer is also disclosed.Type: GrantFiled: August 24, 2000Date of Patent: May 25, 2004Assignee: The Coca-Cola CompanyInventors: Mark Rule, Yu Shi, Horst Ehrich
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Patent number: 6737132Abstract: A fuel container with high fuel barrier properties is provided. The fuel container is a coextrusion blow-molded container made of a layered structure. The layered structure comprises: a barrier layer made of a barrier resin (A) and an inner layer located on an inner side of the container with respect to the barrier layer, the inner layer being made of a thermoplastic resin (B) that is different from the barrier resin (A); wherein the container has a pinch-off part formed in a process of blow molding of a parison made of the layer structure, and wherein the pinch-off part has a cutting face comprising a cutting face of the barrier layer and a cutting face of the inner layer; and wherein the cutting face of the inner layer is covered by a barrier member made of a barrier material (C) that is the same or different from the barrier resin (A).Type: GrantFiled: July 28, 2000Date of Patent: May 18, 2004Assignee: Kuraray Co., Ltd.Inventors: Keizo Michihata, Nahoto Hayashi
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Patent number: 6733852Abstract: In a preferred construction, a food container includes: (i) a container base such as a serving planer, plate or howl having (a) a substantially planar central area, (b) a container base sidewall extending outwardly and upwardly from the central area having: (1) a recessed frustal tapered container base sealing area formed in the container base sidewall, and (2) a container base stop ridge adjacent the frustal tapered container base sealing area, and (c) an outwardly extending convex rim adjoining the container base stop ridge having an outer lip formed thereabout; and (ii) a resilient mating domed lid.Type: GrantFiled: August 2, 2001Date of Patent: May 11, 2004Assignee: Georgia-Pacific CorporationInventors: Mark B. Littlejohn, Rebecca E. Whitmore, Jerome G. Dees
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Patent number: 6733851Abstract: A packaging article has a hermetic heat seal of a multilayer film to itself or another component of the article. The seal layer contains a blend of a highly branched homogeneous polymer having at least 40 branches per 1000 methylene groups, the highly branched homogeneous polymer having an Mw/Mn less than 3.0, a density of less than 0.89 g/cc, the highly branched homogeneous polymer being present in an amount of from about 5 to 50 weight percent, based on layer weight. The semicrystalline polyolefin has a density of at least 0.90 g/cc, and is present in an amount of from about 50 to 95 weight percent, based on total layer weight. The heat seal has a seal strength at 75° C. of at least 100 grams per centimeter. A process for making the article is also disclosed.Type: GrantFiled: March 25, 2002Date of Patent: May 11, 2004Assignee: Cryovac, Inc.Inventor: Isabella Ferri
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Patent number: 6730379Abstract: A shoe is fabricated from an upper structure and a sole structure wherein the sole structure contains a gas-filled cushioning device composed of a multi-layer film formed into a gas-filled membrane having an interior compartment enclosing at least one capture gas. The multi-layer film comprises an outer layer of an elastomeric thermoplastic material such as a polyurethane, an inner layer of an elastomeric thermoplastic material such as a polyurethane, and a barrier layer interposed therebetween which is derived from a combination of at least one ethylene-vinyl alcohol copolymer and up to about 50 wt. % of an aliphatic thermoplastic urethane.Type: GrantFiled: February 28, 2003Date of Patent: May 4, 2004Assignee: Nike, Inc.Inventors: Henry W. Bonk, David Goldwasser
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Patent number: 6727001Abstract: A laminated film is provided which is constituted essentially of a resin substrate and a coated film disposed thereon. The coated film comprises a montmorillonite containing a cation exchanger other than sodium ions and a water-soluble polymer. The laminated film offers a high oxygen-permeability barrier at high humidity and firm bonding between the coated film and the resin substrate at high humidity. A packaging material derived from the laminated film is also provided.Type: GrantFiled: December 5, 2001Date of Patent: April 27, 2004Assignee: Toray Industries, Inc.Inventors: Motonori Hochi, Shigeru Tanaka, Kusato Hirota
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Patent number: 6720053Abstract: Coinjection stretch blow molded containers containing thermoplastic polyester resin and an EVOH resin are obtained, which have greatly improved impact delamination resistance. The containers comprise a thermoplastic polyester layer (layer a) and an ethylene-vinyl alcohol copolymer layer (layer b), with the layer a being kept in direct contact with the both surfaces of the layer b, wherein the ethylene-vinyl alcohol copolymer satisfies the following formulae (1) and (2) and its differential scanning calorimetry (DSC) gives a single peak f or crystal fusion: 25≦ETb≦48 (1) 92≦SDb≦99 (2) wherein ETb indicates the ethylene content (mol %) of the ethylene-vinyl alcohol copolymer, and SDb indicates the degree of saponification (%) of the ethylene-vinyl alcohol copolymer.Type: GrantFiled: July 23, 2001Date of Patent: April 13, 2004Assignee: Kuraray Co., Ltd.Inventors: Shinji Tai, Hiroyuki Shimo, Nahoto Hayashi, Masako Chigami
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Patent number: 6720045Abstract: An easily peelable film comprising a mixture of a propylene/&agr;-olefin copolymer (A), a propylene/&agr;-olefin copolymer (B) having an &agr;-olefin content different from that of the copolymer (A), and/or a propylene homopolymer (C) and a medical packaging container produced using the same. The easily peelable film has excellent heat resistance, flexibility, and transparency and further a broad temperature range for low temperature welding at which peelable partition walls can be formed.Type: GrantFiled: December 8, 2000Date of Patent: April 13, 2004Assignee: Nipro CorporationInventors: Shin-ichi Kawamura, Hiroshi Fukushima
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Patent number: 6720054Abstract: A desiccant system and a method for producing the same wherein a container is provided with a desiccant sheet that is trapped within the container and a water vapor impermeable cover for the container making a water impermeable seal thereto. The sheet may have a first substrate, and optionally, a second substrate, and desiccant particles adhered to the first substrate or trapped between the first substrate and the second substrate. A binder material may fuse the desiccant particles to one another and to the substrates. The sheet may be trapped within the bottle due to its tendency to unfurl to a flat condition, or it may be adhered to an inner surface of the bottle.Type: GrantFiled: March 27, 2002Date of Patent: April 13, 2004Assignee: Koslow Technologies CorporationInventor: Evan E. Koslow
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Patent number: 6720052Abstract: The coated multilayer structure comprising a polymeric base layer, an inorganic oxide gas barrier layer on a surface of the polymeric base layer, and a top coat on the inorganic oxide gas barrier layer, the top coat comprising a soluble compound capable of reducing the permeability of the multilayer structure to gas or vapor. A method for enhancing the gas or vapor barrier properties of a multilayer polymeric/inorganic oxide structure is also disclosed. According to one embodiment, SiOx coated polyethylene terephthalate containers are coated with a gas or vapor barrier enhancing top coat.Type: GrantFiled: August 24, 2000Date of Patent: April 13, 2004Assignee: The Coca-Cola CompanyInventors: Mark Rule, Yu Shi, Thomas Gebele, Helmut Grimm, Elisabeth Budke
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Patent number: 6713140Abstract: The disclosure describes a latently dispersible barrier composite material including an exposed low strength barrier component, an internal water sensitive layer, and a water permeable, inextensible, water dispersible support layer. When exposed to aqueous conditions on the barrier side, the composite prevents it from passing through to the other layers. When exposed to aqueous conditions on the opposite side, the composite readily disperses and may be disposed of by flushing in a toilet, for example. Uses are many and include numerous containment applications such as commode liners, containers for bodily and animal wastes, components of personal care products and the like. Examples of barrier layers include polylactic acid. Examples of water sensitive layers include polyvinyl alcohol. Examples of support layers include low stretch grades of toilet tissue.Type: GrantFiled: December 21, 2001Date of Patent: March 30, 2004Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Ann Louise McCormack, Richard Lee Shick
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Patent number: 6709735Abstract: A film with excellent oxygen barrier properties is disclosed. A barrier coating used thereon is also disclosed, including polyvinyl alcohol and a copolymer of maleic acid and acrylic acid, and wherein the copolymer of maleic acid and acrylic acid has a weight average molecular weight of about 3500 to about 5000. The barrier coating is typically less than about 1 micrometer in thickness and provides an oxygen barrier of less than about 0.3 cc.mil/100 in2/day/atm when tested at 23 degrees Celsius and 0 percent relative humidity according to ASTM D3985. A method of stripping low molecular eight fractions from the copolymer is also disclosed. Metallized coated film according to the present invention shows surprising barrier properties.Type: GrantFiled: November 12, 2002Date of Patent: March 23, 2004Assignee: Mitsubishi Polyester Film, LLCInventors: Robert Posey, Edwin C. Culbertson
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Patent number: 6706348Abstract: A spoolable composite member having a sensor and an energy conductor embedded in the composite member. The spoolable composite member is capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner protective layer, an inner pressure barrier layer, an interface layer, fiber composite layers, an outer pressure barrier layer, and an outer protective layer.Type: GrantFiled: January 18, 2002Date of Patent: March 16, 2004Assignee: Fiberspar CorporationInventors: Peter A. Quigley, Stephen C. Nolet
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Patent number: 6706377Abstract: A sealable film comprising a core layer comprising an olefin polymer wherein the core layer comprises the interior of the film; a separable layer exterior to the core layer, wherein the separable layer comprises a material or blend selected from the group consisting of impact copolymers; thermoplastic polyolefins; blends of impact copolymers and LLDPE's; blends of two or more incompatible polymers; and mixtures thereof; an optic improving layer exterior to the core layer and the separable layer, wherein the optic improving layer comprises a polymer having at least one of modulus, hardness, and/or beam strength being higher than the material of the separable layer; and a sealing layer exterior to the core layer, the separable layer, and the optic improving layer, wherein the sealing layer comprises a polymer.Type: GrantFiled: January 11, 2002Date of Patent: March 16, 2004Assignee: ExxonMobil Oil CorporationInventor: Robert G. Peet