Next To Polyene Polymer Patents (Class 428/517)
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Patent number: 6329047Abstract: The present invention relates to a thermoformable composite film comprising at least one film which comprises cycloolefin copolymer and comprising, laminated to at least one side of this film, a thermoplastic film. The thermoformable film is obtainable by using a solvent-free single-component adhesive to apply the thermoplastic film laminated to the film which comprises cycloolefin copolymer. The film which is laminated is a PVDC-containing thermoplastic film. The thickness of the entire film is from 100 to 500 &mgr;m, the thickness of PVDC film is from 5 to 150 &mgr;m and the thickness of the COC film is from 50 to 400 &mgr;m. The thermoformable composite film is used to produce blister packs.Type: GrantFiled: July 19, 1999Date of Patent: December 11, 2001Assignee: Ticona GmbHInventors: DI. Ekkehard Beer, Wilfried Hatke
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Patent number: 6319353Abstract: Self-adhesive protective film for the exterior of painted vehicles, especially cars, characterized in that the backing of the protective film is a film, the UV permeability in the range from 290 to 400 nm is below 1%, the bond strength on steel is between 0.2 and 2.8 N/cm and the adhesive composition consists of a copolymer comprising at least two different &agr;-olefins having 2 to 12 carbon atoms and at least one further comonomer, no &agr;-olefin having a proportion of 75 mol-% or more in the adhesive composition as a whole.Type: GrantFiled: July 13, 1998Date of Patent: November 20, 2001Assignee: Beiersdorf AGInventor: Bernhard Müssig
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Publication number: 20010036558Abstract: Multilayer articles such as V-belts, hoses, rubber sheets, tires are produced from ethylene, alpha-olefin, or ethylene, alpha olefin diene copolymer elastomers which despite their attractive properties, have not been used previously due to the lack of green tack. The problem of insufficient green tack is overcome by the incorporating an aromatic containing petroleum resin.Type: ApplicationFiled: January 12, 2001Publication date: November 1, 2001Inventors: Kenneth Lewtas, Vincent B.B.G. Gallez, Eric P. Jourdain, Thomas Jay Reynolds, Giandomenico Stella
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Patent number: 6306490Abstract: Biaxially oriented polymeric films having a core layer of a voided propylene homopolymer with a density of not more than 0.70 g/cm3, and at least one substantially non-voided layer on each surface of the core layer, the ratio of the combined thicknesses of the non-voided layers on the respective surfaces of the core layer being from 2:1 to 1:1. Films in accordance with the present invention have low curl, particularly after having been printed.Type: GrantFiled: January 16, 1998Date of Patent: October 23, 2001Assignee: Trespaphan GmbHInventor: Helen Ann Biddiscombe
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Patent number: 6293037Abstract: Acrylic, self-adhesive postage stamps are provided and include a flexible facestock bearing an acrylic pressure-sensitive adhesive (PSA), protected by a release liner. The acrylic PSA is a tackified or inherently tacky polymer formed from a plurality of monomers comprising, based on the total weight of monomeric composition, essentially of (i) 9 to 40% isobornyl acrylate and (ii) 50 to 91% of one or more alkyl acrylates.Type: GrantFiled: September 22, 1999Date of Patent: September 25, 2001Assignee: Avery Dennison CorporationInventors: Lon T. Spada, Carol A. Koch, Kathleen M. Alpaugh
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Publication number: 20010021458Abstract: The present invention provides a composition comprising a low-molecular weight, amorphous polyalphaolefin layer and a water-sensitive substrate layer. Preferably, the polyalphaolefin comprises either a propylene-ethylene copolymer or an ethylene-butene copolymer. Polyalphaolefin coated water-dispersible films of the present invention may be advantageously employed in the preparation of a wide variety of products designed to be contacted with aqueous fluids. Although the coated water-dispersible film of the present invention is particularly suited for personal care products, the coated water-dispersible film of the present invention may be advantageously employed in the preparation of a wide variety of consumer products other than personal care products. When the entire product is disposed of in water, the water-sensitive layer is wetted and weakens.Type: ApplicationFiled: April 30, 2001Publication date: September 13, 2001Inventors: Stephen M. Campbell, John Edward Kerins, William Seal Pomplun, Yihua Chang
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Patent number: 6284344Abstract: The present invention is directed to multi-layer films having three or more layers of bias-cut film where at least two layers have different machine direction angles. More specifically, the present invention is directed to cross laminated films with three or more bias-cut film layers each having a machine direction angle between 20° and 70°, where at least two layers have different direction angles.Type: GrantFiled: June 21, 1999Date of Patent: September 4, 2001Assignee: Illinois Tool Works Inc.Inventors: Christopher C. E. Barnes, Charles E. Amendt, Steven S. Nimz
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Publication number: 20010014384Abstract: A multilayer film for packaging which is superior in, such as extensible elasticity, ability for adhering onto various surfaces, transparency, clear cutting performance, heat-sealability, resistance to fogging, resistance to break-through and ability for restoring from finger pressing and which comprises outer layers made of the outer layer resin composition (I) or (II) given below and an inner layer made of an inner layer resin composition composed of a higher melting component (III) and a softening component (IV) interposed between the outer layers, whereinType: ApplicationFiled: February 28, 2001Publication date: August 16, 2001Inventor: Masahiro Kishine
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Patent number: 6274235Abstract: The present invention is to provide a pressure-sensitive adhesive sheet for surface protection, which has a substrate containing an ethylene/propylene copolymer and an ethylene/1-butene copolymer in a weight ratio of 60:40 to 90:10, and an adhesive composition for pressure-sensitive adhesive sheets for surface protection, which contains 5 to 30 parts by weight of a rosin resin tackifier based on 100 parts by weight of a blend comprising 50 to 100% by weight of a polyisobutylene and/or a butyl rubber and 50 to 0% by weight of a polybutene.Type: GrantFiled: June 30, 1999Date of Patent: August 14, 2001Assignee: Nichiban Company LimitedInventors: Syuji Ichimura, Yoshinaga Tsuzuki, Kinnosuke Hino, Mikihiro Endo, Kazuhiro Kono
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Patent number: 6270912Abstract: An oriented multi-layer film comprised of a core layer comprising a metallocene-catalyzed substantially isotactic propylene polymer, a first additional layer on a side of the core layer, and a second additional layer on a side of the core layer which side is opposite to the side having the first additional layer. In one embodiment of the invention, the core layer includes a polymerized alicyclic hydrocarbon such as polyterpene.Type: GrantFiled: February 25, 1999Date of Patent: August 7, 2001Assignee: Mobil Oil CorporationInventor: Robert G. Peet
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Publication number: 20010009721Abstract: It is an object of the present invention to provide a highly durable photochromic film retaining a photochromic activity for a long time even when used under high temperture and high humidity conditions. A durable photochromic film comprising a coloring material layer containing a photochromic material and a phototransmissive deposition film laminated to said coloring material layer is disclosed.Type: ApplicationFiled: April 2, 1998Publication date: July 26, 2001Inventor: TADASU KAWASHIMA
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Patent number: 6261655Abstract: A multiple layer structure comprising a skin layer composed of a polypropylene copolymer with styrene ethylene-butene styrene block copolymer within a range of 0-20% by weight skin layer, and, a radio frequency (“RF”) susceptible layer adhered to the skin layer. The RF layer has a first component of a propylene based polymer, a second component of a nonpropylene polyolefin, a third component of a radio frequency susceptible polymer, and a fourth component of a polymeric compatibilizing agent wherein the radio frequency susceptible polymer is selected from the group consisting of ethylene acrylic acid copolymers, ethylene methacrylic acid copolymers, polyimides, polyurethanes, polyesters, and polyureas.Type: GrantFiled: June 17, 1999Date of Patent: July 17, 2001Assignee: Baxter International Inc.Inventors: Larry A. Rosenbaum, William Anderson, Lecon Woo, Dean Laurin, Angeles Lillian Buan, Michael T. K. Ling, Yuan Pang Samuel Ding, Denise S. Hayward, Joseph P. Hoppesch, Gregg Nebgen, Stanley Westphal
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Publication number: 20010006736Abstract: The present invention provides a film comprising a layer formed of a resin composition including (a) an olefine-based resin having a solubility parameter (SP value) of from 8.45 to 8.70 and containing therein no repeat unit derived from an aromatic vinyl compound [component (A)] and (b) a thermoplastic resin having a glass transition temperature of more than 50° C. and being made up of a repeat unit different than that of component (A) [component (B)] wherein the resin composition contains from 10 to 1800 parts by weight of component (A) based on 100 parts by weight of component (B), and the like, said film showing an improved easy-tearability, especially better linear tearability.Type: ApplicationFiled: December 18, 2000Publication date: July 5, 2001Inventors: Ryuma Kuroda, Hiroaki Takahata, Yasuyuki Takagi
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Patent number: 6228449Abstract: A sheet material comprising i) a pressure-sensitive adhesive film comprising an acrylic pressure-sensitive adhesive polymer, and ii) a release film comprising a polyolefin polymer having a density of no greater than 0.90 g/cc, the pressure-sensitive adhesive film being in contact with the polyolefin polymer.Type: GrantFiled: January 31, 1994Date of Patent: May 8, 2001Assignee: 3M Innovative Properties CompanyInventor: Scott R. Meyer
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Patent number: 6214426Abstract: A multilayered article and vessel, which are superior in the properties, such as shock resistance, rigidity, an ability to barrier against gasoline and interlayer adhesion, and are permissible of being recycled for reuse, comprising a base layer (A1) comprising a polyetylene resin (a1) having an MFR (ASTM D 1238, 190° C., 2160 g) of 0.001 to 0.5 g/10 min. and a density of 0.945 to 0.980 g/cm3, an adhesive layer (A2) comprising a modified etylene/&agr;-olefin copolymer (a2) which is modified by having grafted thereon an unsaturated carboxylic acid or its derivative and has a density of 0.900 to 0.940 and a barriering layer (B) comprising an ethylene/vinyl alcohol copolymer (b), wherein the Izod impact strength (with notch) (ASTM D 256, −40° C.Type: GrantFiled: April 23, 1998Date of Patent: April 10, 2001Assignee: Mitsui Chemicals, Inc.Inventors: Hideshi Kawachi, Hiromi Shigemoto, Yuichiro Terashi
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Patent number: 6194043Abstract: A container incorporating post-consumer recycled (“PCR”) plastic and a method of making that type of container. The container utilizes a layer of polypropylene or EVOH or a film of fluorinated polyethylene toward the interior from the recycled plastic to prevent contaminants from the latter entering the container's contents. When utilizing EVOH, the container usually has an additional layer of polyethylene or polypropylene covering the EVOH to prevent its deterioration by moisture. Making the container involves first composing a resin including the recycled plastic. Forming the various layers listed above produces a container that includes recycled plastic and a barrier to limit the migration of contaminants f from the recycled material to the container's contents. This permits the use of the resulting containers for food. For a fluorinated polyethylene film, fluorination can occur either during or after the container's formation.Type: GrantFiled: August 19, 1997Date of Patent: February 27, 2001Assignee: Continental Plastic Containers, Inc.Inventor: Gregory M. Fehn
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Patent number: 6187449Abstract: A food packaging stretch film made of a resin containing substantially no chlorine and having a storage modulus (E′) of from 5.0×108 to 5.0×109 dyn/cm2 and a loss tangent (tan &dgr;) of from 0.2 to 0.8, as measured by dynamic viscoelasticity measurement at a frequency of 10 Hz at a temperature of 20° C.Type: GrantFiled: December 26, 1995Date of Patent: February 13, 2001Assignee: Mitsubishi Plastics, Inc.Inventors: Hideki Sasaki, Kenji Nakamura
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Patent number: 6187420Abstract: The present invention provides a novel fender, which has a sufficient shock absorbing action with respect to a ship and is capable of dispersing a compressive force given at the time when the ship comes alongside at the pier and reducing a friction force at the time given when the ship is moored at the pier. A fender of the present invention comprises a fender body 10, and a surface layer 12 with which at least an impact receiving surface of this fender body 10 is coated, wherein the surface layer 12 is made of a blended polymer of a crystalline polyolefin resin and a diene rubber and the proportion of the crystalline polyolefin resin in the blended polymer exceeds 50% by weight and not more than 85% by weight.Type: GrantFiled: July 23, 1998Date of Patent: February 13, 2001Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kei Tajima, Yoshihisa Mizumoto
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Patent number: 6187402Abstract: A multilayer pipe having improved resistance to rapid crack propagation is described.; The pipe consists of at least two layers of different propylene plastic materials, which are so selected and combined that the pipe has a resistance to rapid crack propagation, measured as the critical temperature, which is equal to or lower than 0° C. The pipe is made of polypropylene plastic, and at least one of the layers of the pipe comprises a polypropylene plastic, which is selected from a propylene contanig from 1.0 to 10.0% by weight of ethylene or C4-C10-&agr;-olefin repeating units and having an MFR2 value of between 0.05 and 0.40 g/10 min or an elastromer-modified polypropylene containing from 1.0 to 30% by weight of ethylene or C4-C10-&agr; olefin repeating units and having an MFR2 value of between 0.05 and 50 g/10 min.Type: GrantFiled: September 3, 1998Date of Patent: February 13, 2001Assignee: Borealis A/SInventors: Carl-Gustaf Ek, Bo Malm, Anders Nymark
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Patent number: 6180197Abstract: A multi-layer tube suitable for use in a motor vehicle system to transport fluids containing hydrocarbons such as would be found in a fuel line, a vapor return line or a vapor recovery tube having a first layer radially disposed innermost made up of an extrudable melt-processible thermoplastic material selected from the group consisting of aromatic polyketones, aliphatic polyketones and mixtures thereof, and second layer made up of an extrudable, melt-processible thermoplastic material capable of sufficiently permanent laminar adhesion with the first layer so as to prevent delamination between the first and second layers during a desired lifetime of the tube, and a third layer overlying the first layer made up of a melt-processible thermoplastic material such as polyamides, high density polyethylenes and mixtures thereof.Type: GrantFiled: February 13, 1998Date of Patent: January 30, 2001Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Tao Nie, Duane Pontbriand, David Bensko
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Patent number: 6153307Abstract: The present invention relates to compatibilizers useful to laminate a layer of a vinyl aromatic polymer such as polystyrene and a polyester such as PET. The compatibilizer comprises a mixture comprising 5-95 weight % of a polyester, 95-5 weight % of an impact modified polymer of a vinyl aromatic monomer such as high impact polystyrene (HIPS) and from 5 to 20 weight % of a hydrogenated block polymer of a vinyl aromatic monomer and a conjugated diolefin sometimes called SEBS.Type: GrantFiled: July 30, 1998Date of Patent: November 28, 2000Assignee: Nova Chemicals Inc.Inventor: Beth Ann Baran
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Patent number: 6146739Abstract: A glass run channel comprising a glass run channel body composed of a bottom wall and side walls extending from two opposite edges of the bottom wall, the glass run channel body having a substantially U-shaped section and provided with a groove, and tonguelike draining parts protruding from vicinities of distal edges of the side walls toward the bottom wall of the glass run channel body so as to become proximate to each other. Each of the tonguelike draining parts has a window glass contact part composed of a surface to be brought into contact with a window glass, which comprises a layer of a thermoplastic elastomer and a layer of an ultrahigh molecular weight polyolefin composition. The layer of ultrahigh molecular weight polyolefin composition is arranged so as to contact a window glass. The ultrahigh molecular weight polyolefin composition comprises at least a polyolefin (composition) having a specified intrinsic viscosity and an olefinic thermoplastic elastomer.Type: GrantFiled: February 20, 1998Date of Patent: November 14, 2000Assignee: Mitsui Chemicals, Inc.Inventors: Yuichi Itoh, Masato Karaiwa, Kyoko Kobayashi, Akira Uchiyama
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Patent number: 6146764Abstract: The lamellar layer is formed by overlapping plates of the liquid crystalline polymer in the isotropic matrix. The oxygen transmission rate of a 50 .mu.m thick layer of the monolayer structure is typically less than 150 cm.sup.3 /(m.sup.2 .multidot.d.multidot.bar).Type: GrantFiled: October 30, 1995Date of Patent: November 14, 2000Assignee: Neste OYInventors: Esa Suokas, Mika Harkonen
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Patent number: 6132827Abstract: A multilayer industrial stretch film is provided with at least one cling layer and is formed by coextruding a film-formable polymer with a tackifier. The invention provides a multilayer film having at least two skin layers and at least one core layer in which at least one of the skin layers is derived from a mixture of the tackifier and the film-formable polymer. At least one of the core layers can include a vapor corrosion inhibitor (VCI). Beneficial results are obtained by also including a lubricating composition in at least one, if not both, skin layers when at least one of the core layers contains a VCI. The lubricant in the skin layer effectively reduces the extrusion temperature (for blown and cast films), and tends to avoid degrading or igniting the VCI.Type: GrantFiled: May 19, 1998Date of Patent: October 17, 2000Assignee: AEP Industries, Inc.Inventor: Sergey Miro
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Patent number: 6127026Abstract: 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 gas 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: September 11, 1998Date of Patent: October 3, 2000Assignee: Nike, Inc.Inventors: Henry W. Bonk, David J. Goldwasser, Paul H. Mitchell
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Patent number: 6127043Abstract: A multilayered film having a polymer outer layer, a polymer connecting layer and a heat-sealable polymer inner layer. At least one polymer connecting layer being made of a mixture of a polypropylene homopolymer and/or a polypropylene copolymer and at least one thermoplastic elastomer and/or a mixture of a polypropylene homopolymer and/or a polypropylene copolymer and polyisobutylene. The heat-sealable polymer inner layer, which is adjacent to the connecting layer, is made of a polypropylene homopolymer and/or a polypropylene copolymer with at least one thermoplastic elastomer; excluding polypropylene homopolymers and/or polypropylene copolymers made up predominantly of polyethylene. The multilayered film is used for making packaging materials to package foods, medical fluids or solutions, such as saline solutions, amino acid solutions, dialysis solutions, blood or blood substitute solutions.Type: GrantFiled: November 20, 1998Date of Patent: October 3, 2000Assignee: Sengewald Verpackungen GmbHInventor: Winfried Lange
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Patent number: 6121360Abstract: A gasket comprises a sealing layer formed from a resilient material which comprises particles of chemically-exfoliated vermiculite bonded together. The layer also comprises a hydrolysis-resistant polymer coupled to the vermiculite by a coupling agent. A further gasket comprises a sealing strip wound into a spiral. The sealing strip comprises a resilient layer comprising particles of chemically-exfoliated vermiculite. The sealing strip also comprises a flexible carrier strip to which said resilient layer is bonded.Type: GrantFiled: July 23, 1999Date of Patent: September 19, 2000Assignee: Flexitallic Investments, Inc.Inventors: John R. Hoyes, Alan W. Atkinson, Stephen P. Bond, Adam M. West
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Patent number: 6110546Abstract: An automobile weather strip including at least (a) a weather strip body formed from a first composition including at least one rubber polymer and at least one chemical suitable for effecting sulfur-vulcanization, and (b) a decorative layer formed from a second composition including at least one thermoplastic elastomer and hydrotalcite as a discoloration-preventing agent for the decorative layer. The decorative layer is directly adhered onto the weather strip body.Type: GrantFiled: January 17, 1997Date of Patent: August 29, 2000Assignees: Toyoda Gosei Co., Ltd, Sumitomo Chemical Company, LimitedInventors: Hidenobu Honda, Masayoshi Ichikawa, Katsumi Nakashima, Hironobu Shigematsu, Hiroshi Ooyama, Takashi Sakakibara
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Patent number: 6096435Abstract: A thermoplastic polymer composition is provided that includes 100 parts by weight of a block copolymer and/or its hydrogenate having polymer blocks of an aromatic vinyl compound and polymer blocks of a conjugated diene compound, and from 5 to 95 parts by weight of a block copolymer having polymer blocks of an aromatic vinyl compound and/or an olefinic compound and polymer blocks having a constitutional unit derived from a (meth) acrylic compound, a laminate containing a layer of the composition, and a hot-melt adhesive that includes the composition. Because it has good melt adhesiveness, the composition of the invention can firmly adhere in melt to various polar or non-polar materials. Using the composition, it is easy to produce laminates having a layer of the composition and a layer of some other material, through melt shaping or any other melt adhesion techniques.Type: GrantFiled: March 6, 1998Date of Patent: August 1, 2000Assignee: Kuraray Co., Ltd.Inventors: Kazuhiko Maekawa, Masanari Uno, Atsushi Itoh, Hiroshi Hayashihara, Kazushige Ishiura, Shigeru Kawahara, Shiroh Kishii
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Patent number: 6083584Abstract: A container (10) suitable for medical uses comprising a first planar member (18), a second planar member (22), a first seam (24) and a second seam (26). The first planar member (18) is of a multi-layered polymeric material and further comprises a first substrate (38) and a first layer (46). The first layer (46) is disposed on a portion of the first substrate (38) to separately define a first overlap area (58) and an adjacent first peripheral flange (62). The second planar member (22) is of a multi-layered polymeric material. The first seam (24) attaches a portion of the first overlap area (58) to the second planar member (22). The second seam (26) is spaced from the first seam (24) and attaches a portion of the first peripheral flange (62) to the second planar member (22).Type: GrantFiled: January 30, 1998Date of Patent: July 4, 2000Assignee: Baxter International Inc.Inventors: Sidney T. Smith, Steven H. Giovanetto
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Patent number: 6074731Abstract: A packaging film is provided which has a cold seal cohesive receptive skin layer made up of at least one of (A) and (B), wherein (A) is up to 100% by weight a first polymer blend, and (B) is up to 100% by weight of an optional second component. The first polymer blend is made of high density polyethylene and polyisobutylene. The second optional component is selected from (i) up to 100% by weight of styrene-butadiene copolymer, and (ii) up to 75% by weight of a functionally modified polyethylene.Type: GrantFiled: September 10, 1996Date of Patent: June 13, 2000Assignee: Applied Extrusion Technologies, Inc.Inventor: Andrew F. Wilkie
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Patent number: 6060136Abstract: A multilayer film has a first outer layer, an inner layer, and a second outer layer. The first outer layer comprises a homogeneous ethylene/alpha-olefin copolymer. The inner layer comprises a thermoplastic elastomer. The second outer layer comprises a second ethylene/alpha-olefin copolymer. The inner layer is between the first outer layer and the second outer layer, and is chemically different from the first outer layer and the second outer layer. The multilayer film has an O.sub.2 -transmission rate of from about 500 to 50,000 cc/m.sup.2 24hr STP, and a modulus of at least 60,000 psi. The multilayer film is especially useful for the packaging of O.sub.2 -sensitive products, such as produce. The high modulus of the film enhances its performance in form-fill-and-seal operations.Type: GrantFiled: July 7, 1997Date of Patent: May 9, 2000Assignee: Cryovac, Inc.Inventors: Ray Ernest Patrick, Mendy Joyce Walden
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Patent number: 6048610Abstract: A primer coating composition for use in polyolefin-backed pressure sensitive tape comprising a maleic anhydride modified chlorinated polyolefin covalently bonded to a maleic anhydride modified A-B-A block copolymer, where A is a thermoplastic polystyrene and B is a rubber midblock, by means of a crosslinking agent capable of reacting with the maleic anhydride functional groups in said polyolefin and said block copolymer a polyolefin-backed pressure sensitive tape employing the primer coating composition; and a method for manufacturing a polyolefin-backed pressure sensitive tape employing the primer coating composition are described.Type: GrantFiled: October 31, 1997Date of Patent: April 11, 2000Assignee: Intertape Polymer Group, Inc.Inventors: Richard St. Coeur, William E. Hatfield, John Tynan
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Patent number: 6045648Abstract: Multilayered film and film based assembly which are environmentally-compatible, and which exhibit one or more desirable characteristics of polyvinyl chloride (PVC) film and film based assemblies, such as clarity, flexibility and toughness, but without the environmental and health hazards associated with PVC materials, are provided. Also provided is a method of preparing such film and film based assembly.Type: GrantFiled: June 5, 1995Date of Patent: April 4, 2000Assignee: Minnesta Mining and Manufacturing CompanyInventors: Charlotte M. Palmgren, Craig S. Chamberlain, Ching-Long Tsai, Daryl D. Dressler, Jon M. Nornberg, Dan L. Fanselow, Raymond L. Ferguson, Walton J. Hammar
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Patent number: 6045922Abstract: An adhesive article comprises a backing having opposed top and bottom surfaces and a layer of a pressure sensitive adhesive on the bottom surface. The pressure sensitive adhesive comprises selected poly-.alpha.-olefin polymers and a cold flow restricting agent. The adhesive articles are especially useful for protecting motor vehicles from damage during manufacture, transport and storage.Type: GrantFiled: June 27, 1997Date of Patent: April 4, 2000Assignee: 3M Innovative Properties CompanyInventors: Jeffrey R. Janssen, Eugene G. Joseph, Louis E. Winslow
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Patent number: 6045902Abstract: A tearable film having excellent tear properties contains a dispersed phase and a continuous phase, with said film formed from a composition containing a styrenic polymer, an olefinic polymer, and a compatibilizer wherein the compatibilizer is selected from the group consisting of hydrogenated or modified copolymer of styrene and conjugated diene, olefinic copolymer having a cyclic olefin unit, and chlorinated polyolefin. The film composition is subjected, without stretching, to T-die molding or inflation molding to provide a tearable film. In the continuous phase of the film, said dispersed phase having an average aspect ratio of 3 or more and/or a thickness of 1 .mu.m or less is dispersed in layers. The ratio of the continuous phase to the dispersed phase is 35-98:2-65 (% by weight). In the film, the tearing maximum torque is 60 g.multidot.cm/.mu.m or less and the tearing maximum tensile force is 10 g/.mu.m or less, and the film can be torn straightly at least in one direction.Type: GrantFiled: July 1, 1994Date of Patent: April 4, 2000Assignee: Daicel Chemical Industries Ltd.Inventors: Shinichiro Imanishi, Kenji Ueda, Katsuhiko Sumida
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Patent number: 6045923Abstract: The invention is directed to a co-extruded tape or yarn of the ABA-type, as well as to a process for producing such a tape, comprising a central layer and two top layers, the composition of the central layer (B) and the top layers (A) being different, wherein the central layer (B) is based on at least one propylene polymer, or on at least one ethylene polymer having a density of more than 935 kg/m.sup.3, and the top layers (A) are based on at least one ethylene copolymer with one or more C.sub.3 -C.sub.8 olefins, and the tape or yarn having a thickness of 50 to 150 .mu.m and a stretch ratio between 6 and 10.Type: GrantFiled: November 24, 1997Date of Patent: April 4, 2000Assignee: Lankhorst Indutech B.V.Inventors: Rudolf Hendrik Kok, Hendrik Grunstra
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Patent number: 6042907Abstract: A multilayer sheet, which is particularly well adapted for use as as a label sleeve on carbonated beverage containers, includes first and second coextruded unfoamed layers of polymer compositions each consisting essentially of polyolefin, polystyrene and a compatibility agent. The polyolefin and polystyrene are in a weight ratio in the range of about 30/70 to 70/30, and the compatibility agent is in the amount of about 5% to 10% by total weight. A pigment in the amount of about 10% to 15% by total weight may be included in one or both of the coextruded layers. The polyolefin preferably is selected from the group consisting of polypropylene, polyethylene and mixtures thereof, and the compatibility agent preferably comprises a styrene-ethylene/butylene-styrene block copolymer. One of the unfoamed layers preferably is thicker and of higher strength than the other layer, while the other layer has a smooth uniform exterior surface.Type: GrantFiled: August 28, 1997Date of Patent: March 28, 2000Assignee: Owens-Illinois Labels Inc.Inventors: Maurice W. Blackwelder, Louis M. DiBello
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Patent number: 6025079Abstract: A heat shrinkable multilayer film includes a core layer including a blend having ethylene/propylene copolymer and propylene homopolymer, or ethylene/propylene/propylene/butene-1 terpolymer and propylene homopolymer; and two outer layers each including at least 50%, by weight of each respective outer layer, of ethylene/propylene/butene-1 terpolymer, ethylene/propylene copolymer, or a blend of ethylene/propylene/butene-1 terpolymer and ethylene/propylene copolymer.Type: GrantFiled: July 2, 1998Date of Patent: February 15, 2000Assignee: Cryovac, Inc.Inventors: Paolo Ciocca, Roberto Forloni
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Patent number: 6025067Abstract: A composition comprising discrete particles of elastomeric triblock copolymer, the particles having a Shore A hardness of less than 30 suspended in a continuous phase matrix of noncellular elastomeric polyurethane polymer, in which the triblock copolymer has the configuration A-X-A in which block A is polystyrene and block X is a polymer of butadiene, isoprene or copolymer of ethylene and butylene; the final composition having a Shore A hardness of less than 20.Type: GrantFiled: June 14, 1997Date of Patent: February 15, 2000Inventor: John Nicholas Fay
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Patent number: 6022627Abstract: A breathable packaging material used for packaging items, such as floral groupings, flower pots, fresh produce, food, medical supplies/equipment, pharmaceutical products, and the like, thereby forming a breathable package for containing said items. The breathable packaging material comprises a sheet of material having controlled atmosphere characteristics, and having a desiccant and/or an antimicrobial agent. Methods for using breathable packaging material.Type: GrantFiled: May 23, 1995Date of Patent: February 8, 2000Assignee: Southpac Trust International, Inc.Inventor: Donald E. Weder
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Patent number: 6022612Abstract: Packaging films include a polymeric surface layer made from a blend of polyolefin and thermoplastic rubber, particularly a blend of polyolefin and styrene-isoprene-styrene (SIS) block copolymer or styrene-butadiene-styrene (SBS) block copolymer. The films provide a matte-finish surface without the need for surface treatments. The films can alternatively be surface modified to provide excellent cold seal receptive layers.Type: GrantFiled: June 25, 1996Date of Patent: February 8, 2000Assignee: Applied Extrusion Technologies, Inc.Inventor: Andrew F. Wilkie
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Patent number: 6020070Abstract: Multilayer elastomer films (multilayer material) comprising at least one continuous layer, carrying an active chemical substance (such as corrosion inhibitors, lubricants or alternatively biocides for medical use), inserted between inert elastomer barrier layers, processes for the preparation and various applications of these films.The said multilayer polymeric material comprises at least one layer A composed of a gel which is reversible or non-reversible, as a function of the temperature, and which carries at least one active chemical substance x, and at least two barrier layers E comprising a synthetic elastomer e, the said layers being held together by a polymeric bonding agent y incorporated in at least one of the said layers A or E and/or by an independent bonding layer Z comprising a polymer z and/or by a chemical or physical treatment of at least one of the said layers A or E.Type: GrantFiled: December 19, 1996Date of Patent: February 1, 2000Assignee: HutchinsonInventors: Pierre Hoerner, Gerard Riess, Rene Guy Busnel, Andre Cheymol
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Patent number: 6015626Abstract: Described is a weather-resistant, plasticizer-free, deep-drawable film based on a semicrystalline ethylene/propylene/diene terpolymer and a homo- and/or copolymer of an alkene plus stabilizers and optional fillers, lubricants, pigments, and other ordinary additives. This film is characterized by the fact that the mixture of the semicrystalline ethylene/propylene/diene terpolymer and the homo- and/or copolymer of the alkene contains:70-30 wt % semicrystalline ethylene/propylene/diene terpolymer (A) with approximately 56-76 wt % ethylene, approximately 15-30 wt % propylene, and approximately 9-14 wt % third component,while the terpolymer (A) has a melt-flow index MFI (230/2, 16) of approximately 5-15.0 g/10 min,and 70-30 wt % homo- and/or copolymer (B) of ethylene and/or propylene,while the homo- and/or copolymer has a melt-flow index MFI (230/2, 16) greater than 2.5 g/10 min. This film is especially suited for the interior covering and fittings of motor vehicles.Type: GrantFiled: February 19, 1998Date of Patent: January 18, 2000Assignee: Benecke-Kaliko AGInventor: Walter Kopytko
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Patent number: 6013720Abstract: This invention discloses an aqueous slurry for coating the surface of rubber slabs or pellets to reduce the tendency of the rubber slabs or pellets to stick together, said aqueous slurry being comprised of (1) from about 1 weight percent to about 15 weight percent of syndiotactic-1,2-polybutadiene having a melting point of no more than about 140.degree. C. and a particle size of no more than about 40 mesh; (2) from about 0.1 weight percent to about 5 weight percent of a suspending agent; (3) from about 0.05 weight percent to about 2 weight percent of a wetting agent; and (4) from about 78 weight percent to about 98 weight percent water. The present invention further reveals a coated rubber slab having resistance to sticking which is comprised of a rubber slab having a coating thereon, wherein said coating is comprised of syndiotactic-1,2-polybutadiene having a melting point of no more than about 140.degree. C. and a particle size of no more than about 40 mesh.Type: GrantFiled: July 25, 1997Date of Patent: January 11, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Anthony Joseph Bell, Eilert Aloysius Ofstead, Ronald Lee Holsapple
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Patent number: 6013374Abstract: The present invention relates to battery parts comprising molded pieces made of polyolefin resin, whose surface to be bonded are treated so as to have at least one functional group selected from the group consisting of hydroxyl group, carboxyl group, carbonyl group, fluorosulfuryl group, sulfonic group and its metallic bases, said molded pieces being bonded together with reactive hot-melt adhesive.Type: GrantFiled: January 13, 1998Date of Patent: January 11, 2000Assignee: Mitsubishi Chemical CorporationInventors: Akira Watanabe, Isao Kaneko, Atsushi Kasai, Kunio Bizen
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Patent number: 6004680Abstract: A method for providing improved adhesion of a waterborne, inorganic barrier coating to polyolefin substrate is described. The method involves corona-treatment of the substrate and applying a barrier coating composition.The polyolefin substrate is coated with an acrylic primer layer and then an inorganic barrier layer of a copolysilicate of lithium and potassium is applied.Type: GrantFiled: July 9, 1998Date of Patent: December 21, 1999Assignee: Hoechst Trespaphan GmbHInventors: Jean-Claude Abed, Bobby N. Furr, Bettina E. Bonsall, Douglas R. Holcomb
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Patent number: 5993962Abstract: A resealable packaging system, providing a multiple reseal capability. A strip of pressure sensitive adhesive is applied over a first area of a substrate. Then a strip of cold seal adhesive is layered over the strip of pressure sensitive adhesive. A strip of cold seal adhesive is then applied to a second area of the substrate, or to another substrate, whether of the same or a different type. The materials are chosen so that, when the substrate is aligned and the strips of cold seal adhesive bonded together, the bond formed between the strips of cold seal adhesive, and the bond between the pressure sensitive adhesive and the cold seal adhesive, and the bond between the cold seal adhesive and the substrate, are stronger than the bond between the substrate and the pressure sensitive adhesive. Thus, when the two areas of substrate, now bonded together by the cold seal adhesive, are peeled apart, the pressure sensitive adhesive remains with the cold seal adhesive and is exposed.Type: GrantFiled: January 11, 1996Date of Patent: November 30, 1999Assignee: Ato Findley, Inc.Inventors: Larry S. Timm, Tim E. Bublitz
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Patent number: 5993949Abstract: A multiple layer structure comprising a skin layer, a barrier layer, a radio frequency susceptible layer having a first polyolefin in an amount within a range of 30-60% by weight, a second polyolefin in an amount within the range of 25-50% by weight, a radio frequency susceptible polymer in an amount within the range of 3-40% by weight, a styrene and hydrocarbon block copolymer in an amount within the range of 5-40% by weight of the sealant layer.Type: GrantFiled: November 21, 1997Date of Patent: November 30, 1999Assignee: Baxter International Inc.Inventors: Larry Rosenbaum, Steven Giovanetto, Sidney T. Smith, David V. Bacehowski, Gregg Nebgen, Varsha Kalyankar
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Patent number: 5993922Abstract: The present invention generally relates to polymeric compositions capable of providing enhanced crosslinking efficiency, to single and multilayer films having the subject composition contained within at least one layer of said film, to a method of treating said film to provide enhanced crosslink within said at least one layer of the film and to the resultant cross-linked film product as well as articles made from said cross-linked film product.Type: GrantFiled: March 24, 1997Date of Patent: November 30, 1999Assignee: Cryovac, Inc.Inventors: Robert Babrowicz, William John Gauthier, Charles Robert Morgan, William Peyton Roberts, Drew Ve Speer, Andrew W. Van Putte