Product With Molecular Orientation Patents (Class 428/910)
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Publication number: 20090123697Abstract: A biaxially oriented polyester film includes at least three polyester resin layers A1/B/A2, and has a melting point in the range of 246 to 270° C. The major component of the layer A is polyethylene terephthalate and the stress at 100% elongation in the film's longitudinal direction and width direction at 150° C. and 200° C. meets the following equations: 2?(F100MD+F100TD)?100 and 1?F100TD?60. The film has a high dimensional stability at high temperatures to permit uniform metal deposition, suffers little change in appearance during thermoforming, and serves for easy production of formed parts that closely meet the shape of the die when subjected to low-stress forming.Type: ApplicationFiled: March 28, 2006Publication date: May 14, 2009Applicants: Toray Industries, Inc.Inventors: Ryosuke Matsui, Isao Manabe, Yosuke Takizawa, Saori Sumi, Masahiro Kimura
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Patent number: 7532481Abstract: A base plate for a power module includes: a metal plate, a ceramic base plate joined to the metal plate, and a release agent which includes boron provided in a joint surface between the metal plate and the ceramic base plate. A remaining amount of the release agent is less than 5, as an amount of boron measured by fluorescence X-ray analysis, where the amount of boron is defined as a value obtained by an expression: (a peak height of B-K?/a peak height of X-K?) x 100000 and a crystal grain straining region in the joint surface is equal to or less than 40%, or an amount of crystal grain straining in the joint surface is equal to or less than 0.03%.Type: GrantFiled: April 4, 2005Date of Patent: May 12, 2009Assignee: Mitsubishi Materials CorporationInventors: Toshiyuki Nagase, Yoshiyuki Nagatomo, Kazuaki Kubo, Takeshi Negishi
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Patent number: 7521126Abstract: A readily-adhesive polyester film for optical applications that suppresses rainbow reflections under fluorescent lamps and has excellent adhesion to a hard coating layer and exhibits excellent adhesion at high temperatures and high humidities (resistance to humidity and heat) includes a biaxially-stretched polyester film and a coating layer that is stacked on at least one side of the polyester film and produced by applying to at least one side of the polyester film an aqueous coating liquid containing a resin composition including (A) an aqueous polyester resin and (B) at least one compound that is a water-soluble titanium chelate compound, a water-soluble titanium acylate compound, a water-soluble zirconium chelate compound or a water-soluble zirconium acylate compound as main components. The mixing ratio (A)/(B) is from 10/90 to 95/5 by weight. After that the coating is dried and then stretched in at least one direction.Type: GrantFiled: August 20, 2004Date of Patent: April 21, 2009Assignee: Toyo Boseki Kabushiki KaishaInventors: Hiroshi Taki, Chikao Morishige, Harunobu Kuroiwa
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Patent number: 7514141Abstract: The invention relates to a biaxially oriented polyester film having a base layer (B) which comprises at least 80% by weight of a polyester comprised of from 55 to 90 mol % of units deriving from at least two aromatic dicarboxylic acids and of from 5 to 45 mol % of units deriving from at least one aliphatic dicarboxylic acid, where the total of the dicarboxylic-acid-derived molar percentages is 100. The film features ultimate tensile strength of ?100 N/mm2 and modulus of elasticity of ?3000 N/mm2.Type: GrantFiled: April 3, 2007Date of Patent: April 7, 2009Assignee: Mitsubishi Polyester Film GmbHInventors: Oliver Klein, Herbert Peiffer, Gottfried Hilkert
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Patent number: 7497968Abstract: The invention features dilute solutions of rigid rod or extended rod lyotropic liquid crystalline polymers prepared from high concentration polymerization mixtures. The invention also features methods of preparing such dilute solutions which utilize high mechanical shear to induce mix the high concentration solution with a diluent. The invention further provides articles of manufacture, including films and fibers, having a porous microstructure which are prepared from the dilute homogeneous solutions of the invention.Type: GrantFiled: May 20, 2005Date of Patent: March 3, 2009Assignee: Foster-Miller, Inc.Inventors: David Ofer, Bindu R. Nair, John D. Larouco, William A. Stevenson, Leslie S. Rubin
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Publication number: 20090041965Abstract: The invention relates to a biaxial oriented film with a microporous layer, comprising a propylene polymer and at least one ?-nucleating agent the microporosity of which is generated by conversion of ?-crystalline polypropylene on drawing the film and the use thereof for the labelling of containers in blow moulding. The Gurley value for the film is 10,000 to 300,000 Gurley.Type: ApplicationFiled: March 16, 2006Publication date: February 12, 2009Applicant: TREOFAN GERMANY GMBH + CO. KGInventors: Karl-Heinz Kochem, Bertram Schmitz, Mathias Roth, Wilfrid Tews
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Patent number: 7473473Abstract: A shrink film includes an internal layer including a styrene/butadiene/styrene block copolymer; and first and second outer layers including an olefinic polymer. First and second intermediate layers including an ethylene copolymer having a melt index less than 4.0 can be optionally included. Alternatively, a shrink film includes an internal layer including an ethylene copolymer having a melt index less than 4.0; a first and second intermediate layer each including a styrene/butadiene/styrene block copolymer; and a first and second outer layer each including an olefinic polymer. Film of the invention has a free shrink of from 40% to 80% at 240° F., and an Elmendorf tear of from 70 grams/mil to 300 grams/mil, in at least one of the longitudinal and transverse directions.Type: GrantFiled: March 4, 2005Date of Patent: January 6, 2009Assignee: Cryovac, Inc.Inventor: Anthony Verrocchi
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Patent number: 7473751Abstract: A polymer film having a thickness of 10 microns or less and improved barrier characteristics to both water vapor and oxygen is formed from a biaxially-oriented polypropylene film of isotactic polypropylene. The polypropylene is prepared by the polymerization of propylene in the presence of an isospecific metallocene catalyst. The film has a permeability to water vapor of less than about 2.5 g/m2day/25 ?m and a permeability to oxygen of less than about 2200 cc/m2day/25 ?m. The film also has a haze properties of less than about 1%. The polypropylene contains 0.1 to 1% 2,1 insertions and has an isotacticity of at least 96% meso pentads. The isotactic polypropylene thus produced is then extruded into a sheet that is biaxially-oriented by stressing the sheet in the transverse and longitudinal directions to a draw ratio of at least about 6:1 in the transverse direction, and at least about 4:1 in the longitudinal direction.Type: GrantFiled: January 22, 2007Date of Patent: January 6, 2009Assignee: Fina Technology, Inc.Inventor: Scott D. Cooper
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Patent number: 7459204Abstract: A multilayered polymer film includes a first set of optical layers and a second set of optical layers. The first set of optical layers is made from a polyester which is often birefringent. The polyesters of the first set of optical layers typically have a composition in which 70-100 mol % of the carboxylate subunits are first carboxylate subunits and 0-30 mol % are comonomer carboxylate subunits and 70 to 100 mol % of the glycol subunits are first glycol subunits and 0 to 30 mol % of the glycol subunits are comonomer glycol subunits, where at least 0.5 mol % of the combined carboxylate and glycol subunits are comonomer carboxylate or comonomer glycol subunits. The multilayered polymer film may be used to form, for example, a reflective polarizer or a mirror.Type: GrantFiled: December 15, 2006Date of Patent: December 2, 2008Assignee: 3M Innovative Properties CompanyInventors: Timothy J. Hebrink, William W. Merrill, Carl A. Stover
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Patent number: 7445826Abstract: A polyester container having an enhanced level of crystallinity in the sidewall while maintaining a low level of crystallinity in a thickened base portion. The container is particularly useful as a refillable container which can withstand higher caustic wash temperatures and exhibits reduced flavor carryover, or as a hot-fill container. The container, which can be monolayer or multilayer, is also useful as a carbonated beverage, O2 or CO2 barrier, or beer container.Type: GrantFiled: August 8, 2005Date of Patent: November 4, 2008Assignee: Graham Packaging PET Technologies Inc.Inventors: Wayne N. Collette, Suppayan M. Krishnakumar, Chi Ching Lin
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Patent number: 7442427Abstract: This invention relates to coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable from at least APET, the heatsealable and peelable top layer (A) consisting of a) 80-98% by weight of polyester and b) 2-10% by weight of inorganic and/or organic particles having an average diameter d50 of from 2.5 to 8.0 ?m (based on the mass of the top layer (A)), wherein c) the polyester being composed of 12-89 mol % of units which derive from at least one aromatic dicarboxylic acid and 11-88 mol % of units which derive from at least one aliphatic dicarboxylic acid, the sum of the dicarboxylic acid-derived molar percentages being 100, d) the ratio of particle size d50 and layer thickness dA of the top layer (A) being greater than 1.2 and e) the layer thickness of the top layer (A) dA being from 1.0 to 5 ?m. The invention further relates to a process for producing the film and to its use.Type: GrantFiled: September 29, 2004Date of Patent: October 28, 2008Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Matthias Konrad, Harald Mueller, Paul Broemmel
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Patent number: 7427430Abstract: High gas barrier, delamination-resistant polyamide compositions suitable for extended shelf-life packaging applications are provided. Also provided are polyamide compositions exhibiting high oxygen scavenging capability. The polyamide compositions comprise mXDA-IPA containing copolymers which provide excellent properties to the complete polyamide compositions. Also provided are direct blends of the polyamide compositions with other polymers. The polyamide products are particularly suited for producing barrier packaging articles such as monolayer or multi-layer films, sheets, thermoformed containers and molded bottles. Such articles are useful in a variety of oxygen-sensitive food, beverage, pharmaceutical, and health care product packaging applications.Type: GrantFiled: December 29, 2005Date of Patent: September 23, 2008Assignee: Honeywell International Inc.Inventors: Sangkeun Rhee, Edward P. Socci, Clark V. Brown, John V. Facinelli
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Patent number: 7419726Abstract: Provided is a gas barrier laminated film having no fear of deterioration in transparency and excellent in transparency and gas barrier property at a high humidity as well as a process for producing same. The present invention is featured by a gas barrier laminated film wherein a gas barrier layer (B) has been formed on at least one surface of a film substrate (A), the gas barrier layer (B) being comprised of a composition (b3) of an ethylene-vinyl alcohol copolymer (b1) having an ethylene content of 1˜19 mol % and (meth)acrylic acid polymer (b2). In case the film substrate is coated on at least one surface thereof with a vapor deposition layer of an inorganic oxide or the OPP film is coated on at least one surface thereof with the layer of the modified propylene polymer, the gas barrier laminated film is obtained which is more enhanced in adhesion power to the film substrate.Type: GrantFiled: March 29, 2004Date of Patent: September 2, 2008Assignee: Tohcell Co., Ltd.Inventors: Osamu Nakamura, Kinichi Toda
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Patent number: 7407699Abstract: Improved extruded polypropylene sheets containing a high level of beta crystallinity and A process for making such sheets are disclosed herein. The polypropylene sheets comprise a resinous polymer of propylene and an effective amount of beta spherulites. Uniaxially or biaxially oriented mesh structures produced from the disclosed sheets exhibit lower density, higher strength, and higher torsional rigidity than polypropylene meshes without beta spherulites. Thus, lighter weight mesh structures which meet all of the physical property requirements for end-use applications, such as reinforcing grids to stabilize concrete and soil in civil engineering and landfill applications, are produced. The lighter weight extruded beta-nucleated sheet can also be stretched at higher line speeds, thereby reducing manufacturing costs.Type: GrantFiled: April 15, 2004Date of Patent: August 5, 2008Assignee: Mayzo, Inc.Inventor: Philip Jacoby
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Adhesion-promoted , heatsealable and peelable polyester film, process for its production and its use
Patent number: 7396578Abstract: Coextruded, biaxially oriented polyester films which have a base layer (B) and have a heatsealable outer layer (A) that can be peeled from APET/CPET and from CPET, where the outer layer (A) includes a) from 60 to 99% by weight of polyester and b) from 1 to 10% by weight of inorganic and/or organic particles with a median diameter d50 of from 2 to 8 ?m, and where c) the polyester is composed of from 12 to 89 mol % of units derived from at least one aromatic dicarboxylic acid and of from 11 to 88 mol % of units derived from at least one aliphatic dicarboxylic acid, and the non-sealable surface of the film has been rendered adhesion-promoting. The films of the invention are suitable as a packaging material for foods and other consumable items, and as a lid film for APET/CPET or CPET trays.Type: GrantFiled: November 9, 2004Date of Patent: July 8, 2008Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Bart Janssens, Matthias Konrad, Andreas Stopp -
Patent number: 7396587Abstract: This invention relates to a single- or multilayer, oriented film formed from polyester and at least one inorganic black pigment. The inventive films include at least one layer which has, alongside polyester, an amount of from 0.5 to 75% by weight of particles incorporating iron oxide as black pigment.Type: GrantFiled: April 18, 2006Date of Patent: July 8, 2008Assignee: Mitsubishi Polyester Film GmbHInventors: Holger Kliesch, Thorsten Kiehne, Franz Hora, Ingo Fischer
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Patent number: 7390575Abstract: A polyolefin based biaxially oriented multi-layer film having at least one surface layer comprise of the propylene-ethylene random block copolymer; The propylene-ethylene random block copolymer obtained through sequential polymerization catalyzed by a metallocene component which is composed of 30 to 70 wt % of a propylene-ethylene random copolymer component having an ethylene content of 1 to 7 wt % produced in the first step of the polymerization and from 70 to 30 wt % of a low crystallinity or an amorphous propylene-ethylene random copolymer component produced in the second step of the polymerization having an ethylene content of 6 to 15 wt % higher than that of the polymer component obtained in the first step, wherein that shows a single peak at 0° C. or lower in the temperature-loss tangent (tan ?) curve obtained by dynamic mechanical analysis (DMA).Type: GrantFiled: October 18, 2004Date of Patent: June 24, 2008Assignee: Japan Polypropylene CorporationInventors: Takao Tayano, Kuninori Takahashi, Iku Kouzai, Shinichi Kitade, Shigeo Mizukami, Koichi Hirayama
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Patent number: 7390558Abstract: An aliphatic polyester film on which an inorganic gas-barrier film is formed by deposition to improve the gas barrier properties of the aliphatic polyester wherein the adhesion between the aliphatic polyester film and the deposited gas-barrier film has been improved. The aliphatic polyester film is biaxially stretched and comprises at least two layers (layers A and B). Each of the layers A and B contain an amorphous polylactic acid resin and a crystalline polylactic acid resin in a predetermined ratio.Type: GrantFiled: July 16, 2004Date of Patent: June 24, 2008Assignee: Mitsubishi Plastics, Inc.Inventors: Toshiyuki Aritake, Shigenori Terada
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Patent number: 7384690Abstract: In order to provide a film having excellent heat resistance, thermal dimensional stability, and mechanical properties, in particular, a film capable of satisfying required properties, e.g., higher strength in accordance with the reduction in thickness of a base film, improved thermal dimensional stability and mechanical properties in a use environment, and higher heat resistance and improved thermal dimensional stability in accordance with the needs for miniaturization and more functionality in electrical and electronic areas, a thermoplastic resin is allowed to contain transition metal oxide particles, and is formed into a biaxially oriented thermoplastic resin film, wherein the melting point of the film is allowed to become higher than the melting point of the thermoplastic resin to be used.Type: GrantFiled: January 8, 2003Date of Patent: June 10, 2008Assignee: Toray Industries, Inc.Inventors: Tetsuya Machida, Shigetoshi Maekawa, Takuji Higashioji, Tetsuya Tsunekawa
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Patent number: 7384687Abstract: Disclosed is a stretched resin film comprising a layer (A) stretched in at least one axial direction and comprising 0 to 98 wt % of a polyolefinic resin, 2 wt % or more and less than 100 wt % of an amorphous resin and more than 0 wt % and 70 wt % or less of an inorganic finepowder and/or an organic filler. The stretched resin film of the present invention is resistant to becoming waved when offset-printed with widely-used, quick-drying offset printing inks, and thus has excellent printing properties.Type: GrantFiled: March 28, 2003Date of Patent: June 10, 2008Assignee: Yupo CorporationInventors: Atsushi Ishige, Kazuhisa Kitamura
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Patent number: 7378145Abstract: The present invention relates to a transparent, hot-embossable, biaxially oriented polyester film having a base layer (B), an amorphous outer layer (A) with a coating on this outer layer (A), and a crystalline outer layer (c). The invention further relates to the use of such film and to a process for its production.Type: GrantFiled: October 19, 2007Date of Patent: May 27, 2008Assignee: Mitsubishi Polyester Film GmbHInventors: Matthias Konrad, Bodo Kuhmann, Gottfried Hilkert
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Patent number: 7368161Abstract: Color-stable, pigmented optical bodies comprising a single or multiple layer core having at least one layer of a thermoplastic polymer material. The thermoplastic polymer material has dispersed within it a particulate pigment. The optical bodies generally possess high clarity and low haze and exhibit a transmission of light within a wavelength band of interest within the visible spectrum of from about 10 to about 90 percent.Type: GrantFiled: August 23, 2004Date of Patent: May 6, 2008Assignee: 3M Innovative Properties CompanyInventors: Daniel J. McGurran, Robert L. Brott, James A. Olson
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Patent number: 7368160Abstract: A film of biodegradable polylactic acid polymers and copolymers is produced by coextrusion which displays improved winding and manufacturability and end use performance. The film is coextruded from polylactic acid (PLA) polymers and copolymers and biaxially oriented. The surface layer(s) of the film is modified with a particle and displays improved COF, blocking resistance, reduced static generation, improved winding and improved package formation on packaging machines.Type: GrantFiled: June 2, 2005Date of Patent: May 6, 2008Assignee: Biax International Inc.Inventor: Thomas Inglis
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Patent number: 7368165Abstract: A heat-sealable polymeric film includes a substrate layer of polymeric material having on a surface thereof a heat-sealable coating layer. The layer includes a copolyester and is less than 8 ?m in thickness. The copolyester consists essentially of repeat units of one or more aromatic dicarboxylic acids, one or more aliphatic dicarboxylic acids, and a stoichiometric amount of a glycol component consisting of one or more glycols selected from the group consisting of aliphatic glycols and cycloaliphatic glycols.Type: GrantFiled: June 16, 2005Date of Patent: May 6, 2008Assignee: DuPont Teijin Films U.S. Limited PartnershipInventors: Stephen William Sankey, Kenneth Evans, Mark Russell Hodgson
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Patent number: 7364786Abstract: The biaxially oriented polyester film of the present invention contains a polyester having a primary melting point of 245 to 265° C. as the main component and exhibits a drop bag strength index at 0° C. of at least 2.0 and a strength at break in the film longitudinal direction at 120° C. of at least 100 MPa. The film has superior heat resistance, mechanical strength, impact resistance, and bending resistance and is particularly suitable for packaging materials.Type: GrantFiled: September 10, 2003Date of Patent: April 29, 2008Assignee: Toray Industries, Inc.Inventors: Hiroyuki Tanaka, Kunimasa Tanaka, Ryosuke Matsui
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Patent number: 7364800Abstract: The invention relates to an in-line coated, biaxially oriented polyester film in which at least one surface has a coating formed from the dried residue of an aqueous coating composition, where the aqueous coating composition includes from 1 to 20% by weight (based on the weight of the coating composition) of EAA (ethylene-acrylic acid copolymer) particles whose median particle size (d50 value) is from 1 to 200 ?m.Type: GrantFiled: October 18, 2006Date of Patent: April 29, 2008Assignee: Mitsubishi Polyester Film GmbHInventors: Martin Jesberger, Holger Kliesch, Gottfried Hilkert, Stefan Bartsch
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Publication number: 20080081171Abstract: A laminated tape for reinforcing handles of a corrugated container. The laminated tape comprises one or more upper polyolefin film layers and one or more lower polyolefin film layers with one or more fiber layers between the upper and lower polyolefin film layers. At least one polyolefin film layer may be a mono-axially oriented polypropylene.Type: ApplicationFiled: October 3, 2006Publication date: April 3, 2008Inventor: Dean Thomas DuPont
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Publication number: 20080081185Abstract: A thermally insulative label is provided. The label includes a first layer of material including an insulative coating, and a second layer of shrink material coupled to the first layer wherein the second layer includes graphics.Type: ApplicationFiled: September 28, 2006Publication date: April 3, 2008Inventors: Saifuddin M. Ansari, Robert J. Wojewoda, Kurt A. Zimmerman
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Publication number: 20080070050Abstract: Disclosed herein is an improved, metallized polymer film and method for preparing the same. Such films comprise a) at least one treated polymeric skin layer comprising butylene, and b) a metal layer deposited onto at least one surface of this polymeric skin layer. The polymeric skin layer can comprise a propylene-butylene copolymer or an ethylene-propylene-butylene terpolymer, with this copolymer or terpolymer containing from about 4 wt % to about 12 wt % of butylene. The polymeric skin layer is preferably preconditioned by subjecting an outermost surface thereof to plasma treatment which facilitates the deposition thereon of a strongly adhering metal layer which is preferably aluminum. The resulting multi-layer films exhibit metal adhesion bond strength of at least about 100 grams/25 mm. These films will preferably also exhibit a Water Vapor Transmission Rate of from about 0.05 to about 0.2 g/m2/24 hour, and an Oxygen Transmission Rate of from about 5.0 to about 20 cm3/m2/24 hour.Type: ApplicationFiled: September 15, 2006Publication date: March 20, 2008Inventors: Laurence Dominique Urbain, George Forman Cretekos, Christophe J. Maertens
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Patent number: 7344657Abstract: An aromatic liquid-crystalline polyester composition is provided, which comprises at least one compound selected from an aliphatic carboxylate aryl ester and an aromatic carboxylic anhydride; an aromatic liquid-crystalline polyester; and a solvent containing at least 30% by weight of a halogen-substituted phenol compound. Using the composition, an aromatic liquid-crystalline polyester film with a low viscosity in melting state can be obtained.Type: GrantFiled: September 23, 2005Date of Patent: March 18, 2008Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Okamoto, Shiro Katagiri
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Patent number: 7344765Abstract: A heat-shrinkable polyester film having a multi-layer structure of at least two layers, among which at least one layer is a layer containing a PET bottle-recycled material, wherein a heat shrinkage percentage in a maximum shrinkage direction of a 10 cm square sample cut out from the film is 40% or higher, under the condition that the square sample is immersed in hot water of 95° C. for 10 seconds and then immersed in water of 25° C. for 10 seconds, to provide a heat-shrinkable polyester film which has excellent characteristics and which can be produced at a high rate, even when a PET bottle-recycled material is used.Type: GrantFiled: December 22, 2004Date of Patent: March 18, 2008Assignee: Toyo Boseki Kabushiki KaishaInventors: Satoshi Hayakawa, Seizou Takabayashi, Norimi Tabota, Naonobu Oda
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Publication number: 20080063835Abstract: The invention relates to: a label for in-mold forming having excellent suitability for delabeling which comprises a thermoplastic resin film base layer (I) and a heat-sealable resin layer (II) and in which the heat-sealable resin layer (II) has an adhesion strength as measured at 23° C. of 300 gf/15 mm or higher and an adhesion strength as measured at 90° C. of 290 gf/15 mm or lower; and a labeled resin container having the label bonded thereto.Type: ApplicationFiled: September 7, 2006Publication date: March 13, 2008Applicant: YUPO CORPORATIONInventors: Yasuo Iwasa, Masaki Shiina, Takatoshi Nishizawa
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Patent number: 7341792Abstract: A biaxially oriented saturated polyester film made by a biaxial orientation method, includes a heat-seal side formed in at least one of two sides of the film, the heat-seal side being made by applying a low-temperature plasma treatment to a film surface so that the film surface has a composition ratio of the number of oxygen atoms to the number of carbon atoms, the composition ratio being not less than 105% and not more than 115% of a theoretical value and so that the heat-seal side is heat sealable at a heating temperature ranging from 100° C. to 200° C.Type: GrantFiled: August 18, 2004Date of Patent: March 11, 2008Assignee: AMT Laboratory CorporationInventors: Takeshi Zinbo, Miya Minamigawa
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Publication number: 20080057313Abstract: Embodiments of the present invention include a heat-shrinkable article, comprising a thermoset cross-linked polymeric composition, wherein the cross-linked polymeric composition comprises at least one polypropylene polymer, and at least one polyethylene polymer, wherein the composition has a polypropylene content of less than about 50 percent by weight, and a polyethylene content of less than about 50 percent by weight, based on the total weight of the cross-linked polymeric composition. A method for making the heat-shrinkable article comprises melt mixing the at least one polypropylene polymer with the at least one polyethylene polymer and at least one additional ingredient, extruding the composition blend to form an extruded material, cross-linking the extruded material to produce a thermoset cross-linked material, stretching the cross-linked material at a temperature at or above a melting point of the material, and cooling the stretched material to maintain a form of the stretched material.Type: ApplicationFiled: September 1, 2006Publication date: March 6, 2008Inventors: Sirarpi Bicakci-Jenkins, Abboud L. Mamish
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Publication number: 20080057315Abstract: A method comprises providing a thermoset cross-linked polymeric heat-shrinkable article having a first end and a second end, wherein the first end has at least one extended portion and one non-extended portion, wherein the second end has a first area and a first edge portion, applying an adhesive compound to the heat-shrinkable article, applying the heat-shrinkable article to an apparatus, positioning the heat-shrinkable article to the apparatus such that the adhesive compound contacts the apparatus, layering the at least one extended portion onto the first area of the second end, abutting the at least one non-extended portion to the first edge portion of the second end, and causing heat-shrinkage of the heat-shrinkable article.Type: ApplicationFiled: December 20, 2006Publication date: March 6, 2008Applicant: COVALENCE SPECIALTY MATERIALS CORP.Inventors: Edward Alaerts, Sirarpi Bicakci-Jenkins, Abboud L. Mamish
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Patent number: 7329453Abstract: Coextruded, biaxially oriented polyester films which have a white base layer (B) and have a heatsealable outer layer (A) that can be peeled from APET/CPET and from CPET, where the outer layer (A) includes a) from 80 to 99% by weight of polyester and b) from 1 to 10% by weight of inorganic and/or organic particles with a median diameter d50 of from 2.5 to 12 ?m, and where c) the polyester is composed of from 12 to 89 mol % of units derived from at least one aromatic dicarboxylic acid and of from 11 to 88 mol % of units derived from at least one aliphatic dicarboxylic acid, and d) the ratio calculated from the particle size d50 of the particles and the layer thickness dA of the outer layer (A) is greater than or equal to 1, and the base layer (B) comprises an inorganic white pigment and/or a polymer incompatible with polyester. The films of the invention are suitable as a packaging material for foods and other consumable goods or as a lid film for APET/CPET or CPET trays.Type: GrantFiled: November 9, 2004Date of Patent: February 12, 2008Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Bart Janssens, Gottfried Hilkert, Paul Broemmel
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Patent number: 7323240Abstract: An object of the invention is to provide a non-chlorine polypropylene wrap film excellent in adhesion, transparency, heat resistance, flexibility, gas barrier properties, touch and cutting properties, and disclosed is a polypropylene wrap film, a multilayer film having a tensile modulus of 200 to 1,000 MPa, containing at least a surface layer and an inner layer having a gas barrier resin, and being stretched into a twice or more length in a machine direction and/or a transverse direction, wherein in its multilayer constitution, the surface layer is constituted by a composition comprising, for example, a mixture of a polypropylene resin, a softening agent, an adhering agent and a liquid adhering assistant at a suitable mixing ratio, and the inner layer is constituted, for example, by an ethylene-vinyl alcohol copolymer resin.Type: GrantFiled: November 22, 2001Date of Patent: January 29, 2008Assignee: Asahi Kasei Life & Living CorporationInventors: Masaru Iriya, Takashi Nakao
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Patent number: 7318961Abstract: The invention is directed to monoaxially drawn polyolefin multilayer film, tape or yarn of the AB or ABA type, having a stretch ratio of more than 12, having an E-modulus of at least 10 GPa, substantially consisting of a central layer (B) of a polyolefin selected from polyethylene and polypropylene, and one or two other layers (A) of a polyole fin from the same class as the material of the central layer B, the DSC melting point of the material of the said other layers (A) being lower than the DSC melting point of the material of the said central layer (B), wherein the central layer (B) is between 50 and 99 wt. % of the material and the other layers (A) between 1 and 50 wt. %. The present invention further relates to a method of manufacturing such a tape, film or yarn.Type: GrantFiled: July 19, 2002Date of Patent: January 15, 2008Assignee: Lankhorst Indutech B.V.Inventors: Joachim Loos, Johannes Antonius Joseph Jacobs, Antonius Andreas Johannes Maria Peijs, Tilo Schimanski
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Publication number: 20080000581Abstract: Disclosed is the preparation of a laminated composite structure. Such laminate composites comprise a base layer comprising a base substrate; at least one polymeric layer laminated onto a surface of the base substrate. The polymeric layer is preferably decorative on an exterior surface and is preferably bonded to the base substrate using a thermosetting adhesive interposed between the substrate surface and the polymeric layer. The polymeric layer comprises an opaque, polymeric, e.g., polypropylene-based, film which has a cavitated core and a coating thereon, which is preferably an acrylic-based coating applied to both sides of the film. Such laminated structures can be produced by passing the requisite base layer, polymeric layer film and adhesive through sets of rollers or drums which supply the heat and/or pressure needed to adhesively bond the layers together.Type: ApplicationFiled: June 28, 2006Publication date: January 3, 2008Inventors: Gilles Leon Nison, Tarquin L. Crouch
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Patent number: 7314905Abstract: A film that has high rigidity and high heat resistance and good releasability from a roughened copper foil surface, which is subjected to surface oxidization or etching treatment with acid, such as a black oxidized copper foil surface and that is suitable as a release film for producing an MLB; and a process for producing the same. A drawn film having a layer (A) which comprises a copolymer that is made from 4-methyl-1-pentene and ethylene or an ?-olefin, except 4-methyl-1-pentene, having 3 to 20 carbon atoms and that comprises 80% or more by mole of 4-methyl-1-pentene, the thermal coefficient of contraction of the film being 20% or more in the film-drawn direction, or the peel area of the film being 50% or more when the film, together with a copper foil surface subjected to roughening treatment, is subjected to heating and pressing treatment. This film is suitable for producing an MLB and has good releasability from the roughened copper foil surface, for example, a black oxidized copper foil surface.Type: GrantFiled: March 26, 2004Date of Patent: January 1, 2008Assignee: Mitsui Chemicals, Inc.Inventors: Shigetoshi Nishijima, Shinichi Imuta, Toshiyuki Hirose
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Publication number: 20070298273Abstract: Heat shrinkable multilayer packaging films comprising at least one core of a blend of at least 50% by weight of an ethylene unsaturated-ester copolymer and a material selected from the group consisting of ionomers, ethylene/acid copolymers and terpolymers, or blends, and two outer-film layers comprising a polyolefin. The invention includes films and packaging articles.Type: ApplicationFiled: June 27, 2006Publication date: December 27, 2007Inventors: Robert Wayne Thies, Scott Allan Idlas
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Patent number: 7309740Abstract: A biaxially stretched polypropylene film of the present invention has high stiffness in the film longitudinal direction and can be manufactured by a conventional longitudinal-transverse sequential biaxial stretching method, since the biaxially stretched polypropylene film comprises a polypropylene which comprises a polypropylene having controlled specific values of a melt strength (MS) and a melt flow rate (MFR) at 230° C. or consists of a polypropylene having controlled specific values of a melt strength (MS) and a melt flow rate (MFR) at 230° C. and/or a Trouton ratio of the polypropylene is controlled at a specific value, moreover, the biaxially stretched polypropylene film contains regulated longitudinal fibrils.Type: GrantFiled: May 8, 2002Date of Patent: December 18, 2007Assignee: Toray Industries, Inc.Inventors: Jun'ichi Masuda, Shigeru Tanaka, Tai Sasamoto, Masatoshi Ohkura
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Patent number: 7306835Abstract: The present invention relates to a thermo-shrinkable polyester film with a superior thermal shrinkage, which has an orientation angle of a molecular chain in a range of from 0° to about ±10° relative to a main shrinkage direction, and a molecular orientation ratio (MOR) in a range of from 1.29 to about 2.5, thereby preventing a label made from the film from curling or waving.Type: GrantFiled: January 29, 2007Date of Patent: December 11, 2007Assignee: Kolon Industries, Inc.Inventors: Ki Il Hong, Gi Sang Song
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Patent number: 7300703Abstract: The use of a heat-stabilized, heat-set oriented film comprising poly(ethylene naphthalate) as a substrate in, or in the manufacture of, an electronic or opto-electronic device containing a conjugated conductive polymer, wherein said film has a shrinkage at 30 mins at 230° C. of less than 1%; and a composite film comprising such a substrate layer and on a surface thereof a barrier layer.Type: GrantFiled: August 14, 2006Date of Patent: November 27, 2007Assignee: Dupont Teijin Films U.S. Limited PartnershipInventors: William Alasdair MacDonald, Leigh Beckett Richardson
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Publication number: 20070269649Abstract: The invention relates to biaxially oriented polyester films which are suitable for lamination to sheet metal; the invention in particular relates to a polyester film which (based on the weight of polyester) comprises from 1 to 8% by weight of isophthalate-derived units, and also comprises not only particles whose median diameter is from 0.1 to 2.0 ?m but also particles whose median diameter is from >2.5 ?m to <8 ?m. The invention further relates to a process for production of these films and to their use.Type: ApplicationFiled: May 14, 2007Publication date: November 22, 2007Inventors: Matthias Konrad, Bodo Kuhmann, Gottfried Hilkert
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Adhesive tape having one side coated with an adhesive, and no surface treatment on the opposite side
Patent number: 7294396Abstract: A self-adhesive tape comprising an oriented polyolefin film, one side of which is coated with an adhesive layer formed from a mixture of 30-65 wt. % of a natural rubber latex and 35-70 wt. % of an aqueous dispersion of a hydrocarbon resin, and the opposite side of which has no surface treatment.Type: GrantFiled: July 27, 2001Date of Patent: November 13, 2007Assignee: tesa AGInventors: Andre Galle, Bernhard Müssig, Stefan Röber, Herbert Sinnen, Dieter Wenninger -
Patent number: 7285335Abstract: Antimicrobial and antifogging polymeric films with preferable A/C/E structure useful for the food, medicine and agriculture applications as well as for other general packaging and non-traditional special applications. More preferably, antimicrobial and antifogging films having a A/B/C/E structure. Most preferably, antimicrobial and antifogging films having a A/B/C/D/E structure. A multilayer structure (having at least an skin layer (A) having antifogging and antimicrobial properties/ a core layer (C) / an outer layer (E) structure) for semi and biaxially oriented polyolefin based antifogging films having advantageous properties as compared with known and commercial films such as low values of haze, high values of sheen, lower longitudinal and transverse shrinkage, which provides high dimensional stability, and excellent antifogging and antimicrobial properties. Preferably the skin layer (A), having antifogging and antimicrobial properties, is electrical corona or flame treated.Type: GrantFiled: January 3, 2005Date of Patent: October 23, 2007Assignee: Polina Plastic of America, Inc.Inventors: Oktay Aral, Cumhur Buyukakinci, Zakir Rzaev
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Patent number: 7270723Abstract: A breathable, elastic film/support layer laminate includes a thermoplastic elastomer film sheet of a thermoplastic elastomer and a filled semi crystalline predominantly linear polymer. The film includes between about 25 and 70 weight percent filler, between about 5 and 30 by weight percent semi-crystalline linear polymer, and between about 15 and 60 by weight percent elastomeric polymer. The filler is closely associated with the semi-crystalline linear polymer. The film demonstrates a load loss value at a 50 percent elongation of less than 50 percent, and a breathability of greater than 100 g/m2/24 hours and is laminated to a nonwoven layer.Type: GrantFiled: August 13, 2004Date of Patent: September 18, 2007Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Ann Louise McCormack, Susan Elaine Shawver
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Patent number: 7267884Abstract: Disclosed are films, tapes, and melt-spun fibers comprising or prepared from a composition comprising (a) at least one polyamide polymer; and (b) from about 0.1 to 20 weight % of at least one ethylene copolymer such as ethylene/vinyl acetate dipolymers, ethylene/vinyl acetate terpolymers, ethylene/alkyl (meth)acrylate dipolymers, ethylene/alkyl (meth)acrylate terpolymers, functionalized ethylene copolymers, ethylene/acid copolymers, and salts thereof. The films, tapes and fibers exhibit improved tensile properties such as tensile strength and elongation at break compared to nonmodified polyamide compositions. Also disclosed are nonwoven textiles comprising or prepared from the oriented melt-spun fibers.Type: GrantFiled: March 4, 2005Date of Patent: September 11, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard T. Chou, Loic Pierre Rolland, Sam Louis Samuels, David J. Walsh
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Patent number: 7264884Abstract: A stretch film presenting controlled permeability to gases, manufactured by process of balloon co-extrusion and consisting of outer layers (S2) of stretchable polmeric material and by one or two inner barrier layers (S3) of a EVOH based polymeric matrix, which is made stretchable by the addition of a suitable plasticizer in such a percentage as to conciliate the stretchablity with the desired barrier effect, said layers of different material being reciprocally secured by means of layers (S4) of adhesive material. The polymeric matrix which forms the barrier material and the plasticizer are intimately mixed inside a double-screw corotating extruder, immediately before the phase of co-extrusion, through a premelting of the polymeric matrix and the subsequent injection of the plasticizer in liquid phase.Type: GrantFiled: December 21, 2001Date of Patent: September 4, 2007Assignee: A.W.A.X. Progettazione e RicercaInventors: Renato Rimondi, Angelo Cappi, Carlo Nicoletti