Melt Extrusion (e.g., Co-extrusion, Etc.) Patents (Class 264/173.12)
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Patent number: 7108816Abstract: This invention relates to a method of manufacture of a barrier, especially for electronic display devices, comprising the step of co-extruding a melt of at least one inorganic material with a melt of at least one organic material, wherein the at least one inorganic material and the at least one organic material are co-extruded as a continuous sheet.Type: GrantFiled: October 8, 2002Date of Patent: September 19, 2006Assignee: Koninklijke Philips Electronics N.V.Inventors: Reinhold Wimberger-Friedl, Peter Paul Koets
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Patent number: 7105117Abstract: A method of manufacturing to increase the thermal and electrical conductivity of polymers includes layering a filled polymer with an unfilled polymer to produce a multi-layered system of alternating filled and unfilled polymer layers. The filler material comprises thermally and/or electrically conductive material. A preferred polymer is a shape memory polymer. A method of manufacturing magnetic multi-layered polymer systems is described. Articles formed from such multi-layered systems are also disclosed.Type: GrantFiled: January 6, 2003Date of Patent: September 12, 2006Assignee: General Motors CorporationInventors: William R. Rodgers, Robert A. Ottaviani
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Patent number: 7063889Abstract: [Problem] The object is to provide a resin film for metal sheet laminate which endures severe forming owing to excellent formability and impact resistance, and also to excellent adhesion after forming and heating, further gives stable performance independent of forming conditions, and also provides a laminated metal sheet, and a method for manufacturing the same. [Means for Resolution] The resin film for metal sheet laminate has a mixed resin in which a granular resin mainly existing in a state of grains having 0.1 to 5 ?m in diameter is dispersed in a polyester resin having a main basic skeleton of polyethylene terephthalate and/or isophthalic acid copolymerized polyethylene terephthalate, in a range from 3 to 30% by weight in entire resin. The granular resin is a modified polyolefin resin containing a functional group derived from carboxylic acid in a range from 2 to 20% by weight as carboxylic acid.Type: GrantFiled: September 18, 2003Date of Patent: June 20, 2006Assignee: JFE Steel CorporationInventors: Yasuhide Yoshida, Hiroki Iwasa, Hiroshi Kubo, Takeshi Suzuki, Akihiko Furuta, Keiji Sugawara, Masaaki Yamashita
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Patent number: 7025918Abstract: A novel multilayer structure in which one layer comprises a polymer comprising a solventless, waterless, melt-processable acrylonitrile olefinically unsaturated polymer and the other layer comprises an organic polymer. Either polymer can be employed as the inner layer or the outer layer component of the multilayer structure.Type: GrantFiled: June 29, 2000Date of Patent: April 11, 2006Assignee: Institute of Textile TechnologyInventors: Elena Simona Percec, Richard J. Jorkasky, George S. Li
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Patent number: 7014800Abstract: Bristles for applying media are produced in that a filament, which can be cut into bristles, is extruded with a core which also determines the mechanical properties of the bristle. Cavities are formed at a separation from the center of the core and open towards the circumference of the filament which can be filled with medium from the outside, wherein the circumferential openings of the cavities are formed such that the medium is discharged only when the bristle is appropriately used. The cavities may also have a larger opening width and be covered by a layer or jacket. A bristle and brushes having such bristles produced in accordance with this method are also described.Type: GrantFiled: October 1, 2002Date of Patent: March 21, 2006Assignee: PEDEX & Co. GmbHInventor: Georg Weihrauch
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Patent number: 6998084Abstract: A colored coating for an article is provided including a first layer polymeric coating material with a transparent base which has been pigmented to a desired color and extruded, a second layer of transparent polymeric coating material which has been co-extruded with the first layer and a third layer of polymeric coating material co-extruded with the first layer opposite the second layer, the third layer being more opaque than the first layer. The invention, while having widespread application, is particularly suitable for use as a coating for an exterior surface of an automotive vehicle body panel.Type: GrantFiled: October 26, 2001Date of Patent: February 14, 2006Assignee: DaimlerChrysler CorporationInventor: John Horansky
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Patent number: 6994817Abstract: The invention concerns a process and apparatus for the coextrusion of rubber mixtures, comprising a main extruder (1) with an extrusion head (10) having at least two flow channels (14, 15), each for a rubber mixture (A, B), the channels opening into an extrusion orifice (18) through which the two rubber mixtures (A, B) are propelled. The extrusion orifice (18) is delimited by a first wall (111) and a second wall (161). The apparatus also comprises at least one micro-extruder (2) for a third rubber mixture (C), whose extrusion head (22) is provided at its end with a nozzle (23) passing through the two flow channels (14, 15) such that the third rubber mixture (C) is inserted into each rubber mixture (A, B) upstream from the extrusion orifice (18).Type: GrantFiled: February 13, 2003Date of Patent: February 7, 2006Assignee: Michelin Recherche et Technique S.A.Inventors: Didier Calvar, Bernard Marechal
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Patent number: 6964816Abstract: Multilayer thermoformable structures for packaging film applications. The multilayer structures having at least a first layer of polyester, a second layer of a first adhesive and a third layer of a nylon blend formed into a flexible non-oriented film by coextrusion.Type: GrantFiled: September 9, 2002Date of Patent: November 15, 2005Assignee: Curwood, Inc.Inventors: Thomas Andrew Schell, Gregory Robert Pockat, Andrew John Lischefski
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Patent number: 6962754Abstract: A structure made of a fluoropolymer layer and directly attached to one of its sides a tie layer based on a polyamide which results from the condensation of at least one diacid and at least one diamine of the following formula (1): in which R1 represents H or -Z1-NH2 and Z1 represents an alkyl, a cycloalkyl or an aryl having up to 15 carbon atoms and R2 represents H or -Z2-NH2 and Z2 represents an alkyl, a cycloalkyl or an aryl having up to 15 carbon atoms, it being possible for R1 and R2 to be identical or different. The tie resin may also be a copolymer having polyamide blocks and polyether blocks, the polyamide blocks resulting from condensation of at least one diacid and at least one diamine of formula (1). The invention also relates to a structure comprising a fluoropolymer layer, the tie layer and a substrate layer, respectively, as well as to a structure comprising a tie layer, respectively.Type: GrantFiled: June 19, 2002Date of Patent: November 8, 2005Assignee: ARKEMAInventors: Philippe Bussi, Christophe Lacroix, David Silagy
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Patent number: 6946192Abstract: The application discloses a transparent, biaxially oriented polyester film having a base layer at least 80% by weight of which is composed of a thermoplastic polyester, and having at least one outer layer, wherein the outer layer is composed of a polymer, or of a mixture of polymers, which comprises at least 40% by weight of ethylene 2,6-naphthalate units and up to 40% by weight of ethylene terephthalate units and/or units from cycloaliphatic or aromatic diols and/or dicarboxylic acids, with the proviso that the Tg2 value of the polyester film is above the Tg2 value of the base layer but below the Tg2 value of the outer layer, and at least one film surface has a surface tension of from 35 to 65 mN/m and/or has been provided with a functional coating of thickness from 5 to 100 nm. The film has low atmospheric oxygen transmission. It is particularly suitable for packaging uses, specifically for packaging foods and other consumable items, and for laminating, metallizing and printing.Type: GrantFiled: August 12, 2003Date of Patent: September 20, 2005Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Cynthia Bennett, Guenther Crass, Gottfried Hilkert, Werner Roth
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Patent number: 6926858Abstract: A blown film die divides a flow of material into two flows with higher and lower flow portions and recombines the flow by combining higher flow portions with lower flow portions. The flow can be divided in circumferential channels between an annular feed ring and an annular distribution ring.Type: GrantFiled: August 27, 2002Date of Patent: August 9, 2005Assignee: Addex, Inc.Inventor: Robert E. Cree
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Patent number: 6911171Abstract: By achieving an extruded, foamed core formed from plastic material peripherally surrounded and integrally bonded with a plurality of cooperating synthetic, plastic, extruded, outer layers, a unique, multi-component, multi-layer synthetic closure is provided which may be employed as a bottle closure or stopper for any desired product, whether the product is a liquid, a viscous material, or a solid distributed in a bottle or container and dispensed through the open portal of the container neck. The present invention achieves a mass producible, resilient, synthetic bottle closure which is employable for any desired bottle, including wine. By employing the present invention, a multi-component or multi-layer synthetic closure is attained which possesses physical properties substantially equal to or better than the physical properties found in cork material, which has caused such cork material to be the principal closure material for wine bottles.Type: GrantFiled: April 8, 2003Date of Patent: June 28, 2005Assignee: Nomacorc LLCInventor: Eduardo Lauer
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Patent number: 6905324Abstract: A method and apparatus for the extrusion of multilayered composite products, is provided. The inventive apparatus includes a coextrusion structure and a partition member. In accordance with the inventive method, the relative orientation of a first shaped flow stream and a second shaped flow stream to one another is changed, and the reoriented shaped streams are melt-laminated to produce a layered composite formed independent of division of a layered precursor stream. The reorientation occurs via a flow sequencer, which may be removably disposed. Beneficially, layered flow streams that differ from one another may be used. The coextrusion structure may advantageously include one or more removably disposed, flow-shaping inserts, and the partition member may be a removably disposed, partition plate.Type: GrantFiled: April 26, 2002Date of Patent: June 14, 2005Assignee: Cloeren IncorporatedInventor: Peter F. Cloeren
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Patent number: 6896832Abstract: In the resin film forming method for extruding a fused resin from an extruder die to form a resin film, the second resin forming both ends in width direction of the resin film uses a resin greater in extension viscosity than the first resin forming the center in width direction of the resin film. Thereby, even if production conditions such as resin condition and operating conditions change, faults such as neck-in and its resultant thickening at both ends of the resin film can be suppressed. In the production of a laminate by nipping a support and a resin film of a thermoplastic resin by means of a nip roller and a cooling roller while coating the resin film onto the surface of the support, the accompanying air following the rotation of the cooling roller to the nip point is shut off by blowing a gas permeable through the resin film from a gas jet nozzle toward the surface of the cooling roller.Type: GrantFiled: February 11, 2002Date of Patent: May 24, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadahiro Kegasawa, Ryuichi Katsumoto, Masanori Takase, Hidetoshi Okamura
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Patent number: 6893594Abstract: Novel window and patio door frame members are formed by an extrusion process that provide these members with at least one channel and with an outer weather resistant surface and an internal imitation wood surface together with integrated sealing strips formed in the channels for the doors, these components being fully integrated. The process is carried out by extruding a foamed profile with a channel through a first die therein having reduced dimensions where a protective shell is desired, co-extruding a plastic with said foamed profile in a second die to form a protective shell where the reduced dimensions occur, passing the co-extrusion though a calibration die, and then heating the co-extrusion at selected location where weather stripping is desired and then passing the co-extrusion through a final die where plastic weather stripping is extruded therewith and then cooling the integrated member.Type: GrantFiled: June 20, 2003Date of Patent: May 17, 2005Inventor: Kuei Yung Wang Chen
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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: 6878318Abstract: The invention provides, as a method for producing a multi-layer foamed sheet whose scale-like appearance has been improved by means of a multi-layer circular die coextrusion method, a method for producing a multi-layer foamed sheet having foam layers and non-foam layers by a multi-layer circular die coextrusion method which is a method for producing a multi-layer foamed sheet wherein the shear stress at the interface of each layer is 5000 Pa or higher and not higher than 50000 Pa, a method for producing a multi-layer foamed sheet wherein the resin of said non-foam layer is a linear propylenic resin having a melt flow rate of 5 to 30 g/10 minutes, and a method for producing a multi-layer foamed sheet wherein the resin of said foam layer is a propylenic resin whose melt tension (MT) at 190° C. and melt flow rate (MFR) at 230° C. satisfy the following equation A: MT?7.52×MFR (?0.Type: GrantFiled: February 11, 2002Date of Patent: April 12, 2005Assignee: Sumitomo Chemical Company, LimitedInventors: Akinobu Sakamoto, Shigehumi Takuno, Tatsuhiro Nagamatsu
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Patent number: 6878332Abstract: Touch fasteners with different portions having different material properties, and methods and apparatus for making such a product. In one embodiment, the fastener includes a cross-linkable polymer, and a first portion of the fastener is cross-linked and a second portion of the fastener is not cross-linked or is cross-linked to a degree less than said first portion. In another embodiment, the fastener is made in a continuous process on a rotating mold roll having a plurality of fastener element mold cavities extending into the mold roll from its outer circumferential surface.Type: GrantFiled: September 2, 2003Date of Patent: April 12, 2005Assignee: Velcro Industries, B.V.Inventors: Ernesto S. Tachauer, Brian J. VanBenschoten
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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: 6841240Abstract: A multilayered article made of a plastic material which exhibits high IR reflection and a high gloss is disclosed. The article includes at least three layers A, B and C, wherein layer A contains a transparent thermoplastic plastics material, and wherein layer B contains a transparent thermoplastic plastics material and a pigment which consists of a transparent support material and a titanium dioxide layer of thickness 150 to 200 ?m, and where layer C contains a transparent thermoplastic plastics material.Type: GrantFiled: December 6, 2002Date of Patent: January 11, 2005Assignee: Bayer AktiengesellschaftInventors: Rüdiger Gorny, Siegfried Anders, Wolfgang Nising
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Patent number: 6837698Abstract: The invention is an extrusion device comprising an interleaving block portion. The interleaving block portion includes at least two first chambers, each first chamber including a width, a length, a height, and an input aperture. The length dimension of the first chambers are generally parallel. An output aperture is included in each first chamber, the output aperture is wider and shorter in height than the input aperture. A series of first distances are defined between the input aperture to points along the output aperture. A die portion is included in the extrusion device. The die portion has a laminate chamber having a height dimension. The height dimension of the laminate is disposed generally perpendicular to the length dimension of the first chambers. An output is disposed at one end of the height dimension. The laminate chamber is disposed so as to be in communication with the output apertures of the parallel first chambers.Type: GrantFiled: December 19, 2001Date of Patent: January 4, 2005Assignee: 3M Innovative Properties CompanyInventors: Robert M. Floyd, Douglas A. Devens, Jr.
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Publication number: 20040256050Abstract: A method for making a vacuum packaging film includes flowing a plastic melt, from a multi-layer extruder, onto a rotating roller. The plastic melt is then cooled while simultaneously imparting a pattern, via a pattern imparting means, onto the plastic melt resulting in the vacuum packaging film.Type: ApplicationFiled: March 15, 2004Publication date: December 23, 2004Inventor: Hongyu Wu
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Patent number: 6830713Abstract: Methods and apparatuses are provided for the manufacture of coextruded polymeric multilayer optical films. The multilayer optical films have an ordered arrangement of layers of two or more materials having particular layer thicknesses and a prescribed layer thickness gradient throughout the multilayer optical stack. The methods and apparatuses described allow improved control over individual layer thicknesses, layer thickness gradients, indices of refraction, interlayer adhesion, and surface characteristics of the optical films. The methods and apparatuses described are useful for making interference polarizers, mirrors, and colored films that are optically effective over diverse portions of the ultraviolet, visible, and infrared spectra.Type: GrantFiled: March 16, 2001Date of Patent: December 14, 2004Assignee: 3M Innovative Properties CompanyInventors: Timothy J. Hebrink, Yaoqi J. Liu, William Ward Merrill, Bruce A. Nerad, John A. Wheatley
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Patent number: 6827886Abstract: Methods and apparatuses are provided for the manufacture of coextruded polymeric multilayer optical films. The multilayer optical films have an ordered arrangement of layers of two or more materials having particular layer thicknesses and a prescribed layer thickness gradient throughout the multilayer optical stack. The methods and apparatuses described allow improved control over individual layer thicknesses, layer thickness gradients, indices of refraction, interlayer adhesion, and surface characteristics of the optical films. The methods and apparatuses described are useful for making interference polarizers, mirrors, and colored films that are optically effective over diverse portions of the ultraviolet, visible, and infrared spectra.Type: GrantFiled: March 16, 2001Date of Patent: December 7, 2004Assignee: 3M Innovative Properties CompanyInventors: Terence D. Neavin, Andrew J. Ouderkirk, Yaoqi J. Liu
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Patent number: 6824864Abstract: The present invention relates to bioriented polyethylene films having high water vapor transmission rates (WVTR) and methods for preparing the same. The film comprises a base layer and skin layers. The base layer comprises highly cavitated polyethylene, such as medium density polyethylene (MDPE) or high density polyethylene (HDPE). The cavitating agent in the base layer may be calcium carbonate. At least one skin layer comprises (i) a copolymer of ethylene and at least one other monomer and (ii) a hydrocarbon resin, such as a cyclopentadiene resin. This copolymer (i) may be an ethylene-propylene copolymer or an ethylene-propylene-butene-1 terpolymer. The film may have unidirectional tear properties in the machine direction. This film is particularly useful for packaging food products, such as pieces of candy.Type: GrantFiled: October 23, 2001Date of Patent: November 30, 2004Assignee: ExxonMobil Oil CorporationInventor: Michael John Bader
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Publication number: 20040220534Abstract: A medical device includes a conduit for a fluid. The conduit has a wall formed of a hydrophobic polymer with a hydrophilic polymer layer extruded over it, and an antimicrobial substantially dispersed within the hydrophilic polymer. The antimicrobial compound may be a predetermined amount of phosphorus-based glass having a predetermined quantity of a metal such as silver substantially dispersed therein. The medical device may be an endotracheal tube made by providing a hydrophobic polymer, a hydrophilic polymer and an antimicrobial compound, forming the hydrophobic polymer, the hydrophilic polymer and the antimicrobial compound into a conduit, and forming a cuff on an end of the conduit.Type: ApplicationFiled: April 29, 2003Publication date: November 4, 2004Inventors: Paul W. Martens, Robert L. Nieto, Robert Virag
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Patent number: 6787218Abstract: The invention relates to a transparent, biaxially oriented polyester film with a base layer B, at least 80% by weight of which is composed of a thermoplastic polyester, and with at least one outer layer A. The outer layer A is composed of a copolymer or a mixture of polymers/copolymers which contains ethylene 2,6-naphthalate units in a range of from 90 to 98% by weight and up to 10% by weight of ethylene terephthalate units, and/or units derived from cycloaliphatic or aromatic diols and/or dicarboxylic acids. Its thickness is more than 0.7 &mgr;m and makes up less than 25% by weight of the total film and the Tg2 value of the polyester film is above the Tg2 value of the base layer, but below the Tg2 value of the polyester for the outer layer. The transparent film has low permeability to atmospheric oxygen and exhibits very good adhesion between the individual layers. It is particularly suitable for packaging purposes, specifically for packaging foods or other consumable items.Type: GrantFiled: July 20, 2001Date of Patent: September 7, 2004Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Gottfried Hilkert, Richard Lee Davis
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Patent number: 6787206Abstract: A cross-laminate web is formed of two oriented films, the films being arranged so that the main direction of orientation of the first film (A) generally follows the longitudinal direction (D) of the web and the main direction of the second film (B) is perpendicular (F) to that direction. The coefficient of elasticity of the material of the first film, in an unoriented state, is at least 115% lower than that of the material of the second film, and the heat shrinkability of the first film is greater than that of the second film. Bags formed from the cross-laminate have heat seals with improved shock peel strength.Type: GrantFiled: December 12, 2002Date of Patent: September 7, 2004Inventor: Ole-Bendt Rasmussen
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Publication number: 20040169309Abstract: A method of forming an extrusion comprises passing a first, plastics material (12) through a first channel (104) in a die, passing a second, plastics material (14) through a second channel (112) in the die, and passing a third, plastics material (16) through a third channel (314) in the die. At least one of the materials is passed through a metering gap into contact with the other other materials to cause the at least one material to bond with the other materials as the materials pass through the die.Type: ApplicationFiled: April 21, 2004Publication date: September 2, 2004Inventors: Richard S. Whelan, Robert G. Whelan
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Patent number: 6780515Abstract: A heat-absorbing system comprising at least a first layer (A) containing a ultraviolet absorber, a second layer (B) containing an organic infrared absorber and ultraviolet absorber and a third, interference layer (C) reflecting in the infrared range is disclosed. The system is suitable for shielding plastic glazing elements from heat radiation.Type: GrantFiled: April 8, 2002Date of Patent: August 24, 2004Assignee: Bayer AktiengesellschaftInventor: Martin Döbler
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Publication number: 20040159969Abstract: This disclosed invention relates to a method of making a dry paint transfer laminate, comprising: extruding a paint film layer over a release liner; and extruding a pressure sensitive adhesive layer over the paint film layer.Type: ApplicationFiled: June 9, 2003Publication date: August 19, 2004Inventors: Keith L. Truog, Howard Enlow, Norman A. Conti, Roger A. Fahlsing
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Patent number: 6776933Abstract: A method of manufacturing a security item comprises coextruding at least two polymer plastic materials (6,7) with different characteristics so as to form a substrate so that neither material are biaxially oriented, and providing security indicia (14) on the substrate.Type: GrantFiled: October 6, 2000Date of Patent: August 17, 2004Assignee: De La Rue International LimitedInventors: Charles Edward Chatwin, Christopher John Fice
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Publication number: 20040146670Abstract: Multilayer medical devices, apparatuses for making such devices, and methods of making such devices are disclosed.Type: ApplicationFiled: January 27, 2003Publication date: July 29, 2004Inventors: Albert Chin, John Jianhua Chen, Thomas A. Svatek, Ronald A. Sahatjian
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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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Publication number: 20040131823Abstract: A method of manufacturing to increase the thermal and electrical conductivity of polymers includes layering a filled polymer with an unfilled polymer to produce a multi-layered system of alternating filled and unfilled polymer layers. The filler material comprises thermally and/or electrically conductive material. A preferred polymer is a shape memory polymer. A method of manufacturing magnetic multi-layered polymer systems is described. Articles formed from such multi-layered systems are also disclosed.Type: ApplicationFiled: January 6, 2003Publication date: July 8, 2004Inventors: William R. Rodgers, Robert A. Ottaviani
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Patent number: 6740412Abstract: Polymeric adhesive comprising a homogeneous mixture of at least three constituents: (a) at least one thermoplastic halogenated hydrocarbon polymer, (b) at least one copolymer of monoethylenic monomers which carry an alkyl carboxylate functional group and (c) at least one alpha-olefin polymer modified by the incorporation of at least one functional group chosen from a carboxyl, an acid anhydride, a hydroxyl and an epoxide. Process for the preparation of this polymeric adhesive and use of this polymeric adhesive in the preparation of structures with multiple polymeric layers. Structures with multiple polymeric layers comprising a layer (A) based on thermoplastic halogenated hydrocarbon polymer bonded to a layer (C) based on thermoplastic nonhalogenated polymer incompatible with (A) via a layer (B) based on this polymeric adhesive.Type: GrantFiled: July 9, 2001Date of Patent: May 25, 2004Assignee: Solvay (Societe Anonyme)Inventors: Jean-Marie Oreins, Vincent Thulliez, Guy Laurent, Fredy Declerck
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Patent number: 6730406Abstract: The invention relates to a co-extruded, biaxially oriented polyester film consisting of a base layer and at least one outer layer. The film contains at least one flame-retardant agent, at least one UV-stabilizer and has a matt outer layer which contains a mixture and/or a blend of two components (I) and (II), whereby component (I) is substantially a polyethylene terephthalate homopolymer, or a polyethylene terephthalate copolymer, or a mixture of polyethylene terephthalate homopolymers or polyethylene terephthalate copolymers, and component (II) is a polymer containing at least one sulphonate group.Type: GrantFiled: July 18, 2002Date of Patent: May 4, 2004Assignee: Mitsubishi Polyester Film GmbHInventors: Ursula Murschall, Ulrich Kern, Guenther Crass, Gottfried Hilkert
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Publication number: 20040062915Abstract: The invention comprises reinforced composite structural members which are formed by bonding reinforcing sections to predetermined areas on the outside surface of a hollow profile formed from a thermoplastic resin cellulosic fiber composite material, where the predetermined areas are located substantially away from the center of mass of the composite profile. The reinforcing sections have a higher modulus than the composite material used to form the hollow profile. The invention also comprises processes for forming these reinforced composite structural members.Type: ApplicationFiled: October 1, 2002Publication date: April 1, 2004Inventors: Arunas Antanas Pabedinskas, Werner Karl Hermann Gregori
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Patent number: 6703141Abstract: The present invention relates to a matte surface film comprising: (a) a base layer comprising a polyolefin; and (b) a matte surface layer comprising a blend of a non-hydrocarbon polymer with at least one incompatible polyolefin, wherein said non-hydrocarbon polymer includes monomeric units with polar functional groups. The film may be used for packaging and label applications.Type: GrantFiled: December 9, 1999Date of Patent: March 9, 2004Assignee: ExxonMobil Oil CorporationInventors: Pang-Chia Lu, Lyle J. Harley, Francis D. Tran
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Publication number: 20040018339Abstract: A motor vehicle has a first body part with a seal support flange thereon that supports a unitary seal construction having a flexible bulb seal portion engageable with second vehicle body part including a hood or other vehicle body part for sealing against leakage between the first and second vehicle body parts and an integrally formed base portion and wherein the flexible bulb seal is hollow and is formed of a soft low density thermoplastic foam and the integrally formed base portion is integrally extruded with the flexible bulb seal and is formed solely from polymeric material having spaced walls defining a recess for fitting the unitary seal construction in place on the support flange.Type: ApplicationFiled: May 21, 2003Publication date: January 29, 2004Inventor: Kenneth W. Rood
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Patent number: 6673425Abstract: A multilayer optical body having improved dimensional stability is disclosed. The optical body includes an optical film, such as an oriented multilayer optical film, and a dimensionally stable layer, such as a transparent polycarbonate layer. In addition, in specific implementations, the invention includes an intermediate layer between the optical film and the dimensionally stable layer. Methods of making the optical body are also disclosed.Type: GrantFiled: October 27, 2000Date of Patent: January 6, 2004Assignee: 3M Innovative Properties CompanyInventors: Timothy J. Hebrink, Andrew J. Ouderkirk
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Patent number: 6669887Abstract: A reversibly extensible polymeric film is hot formed, as by coextrusion, using selected polymeric materials that provide discrete areas of elastic and inelastic polymeric materials arranged in laterally spaced and longitudinally elongated lanes or stripes connected by integrally formed joints therebetween. The elastic materials comprise block polymers selected from tetrablock, triblock and diblock polymers, and the inelastic material is selected from polyolefins such as polyethylene, polypropylene, poly(ethylene-propylene), poly(ethylene-vinyl acetate), poly(styrene-butadiene), or copolymers or blends thereof.Type: GrantFiled: December 21, 2000Date of Patent: December 30, 2003Assignee: Avery Dennison CorporationInventors: Michael D. Hilston, Beverly S. Braun, Robert A. Wanska
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Patent number: 6656401Abstract: The specification discloses a method for extrusion coating multiple substrate webs on a dual or tandem extruder system having multiple extruder stations. The method includes as an initial step providing a first substrate web and a second substrate web wherein each of the first and second substrate webs has a coating side and an underside. The webs are temporarily joined to form a composite web wherein the respective coating sides face outward and the respective undersides face one another. A first polymer coating is extruded on the coating side of the first web at a first extrusion station. Subsequently, a second polymer coating is extruded on the coating side of the second web at a second extrusion station. The extrusion coated first and second webs are then separated. The invention enables more efficient and economical use of dual or tandem extruder systems.Type: GrantFiled: October 16, 2001Date of Patent: December 2, 2003Assignee: International Paper CompanyInventor: Gary H. Knauf
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Publication number: 20030209825Abstract: This invention relates to the field of multiple layer plastic extrusion, and more particularly to assemblies in which thin or micro-layers of polymer material are formed which polymer material may be from two or more individual extruders, and delivered to a multilayer combining adapter in association with an extruder die or other utilizations. The combining adapter of this invention is referred to herein as a flow velocity profiler (FVP) and includes a cartridge assembly body (20) that is formed with individual cavities (26) that receive on of plurality of (60). Changing individual inserts is less time intensive that changing an entire body as required in prior art.Type: ApplicationFiled: February 5, 2003Publication date: November 13, 2003Inventors: Anton L Timmons, Frederick c Suppon, John S Montalbano
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Patent number: 6645584Abstract: The invention relates to compostable polymer coated paper or paperboard (1), a method for making the same and products obtained therefrom. According to the invention, a compostable biodegradable coating (3) of paper or paperboard (1) includes an outer layer (6) containing polylactide the weight of which is at the most about 20 g/m2, and of an adhesive layer (7) that binds the outer layer to the paper or paperboard (1) and is of biodegradable polymer material that is coextruded with the polylactide. Suitable materials for the adhesive layer (7) are biodegradable polyesters. The production is by coextrusion of the polylactide layer (6) and the adhesive layer (7) on either one side of the paper or paperboard or on both sides thereof. Products obtained include in particular packages for food stuffs and disposable dishes such as containers for frozen foods, disposable drinking cups, heat-sealed carton packages and packaging wraps.Type: GrantFiled: February 1, 2001Date of Patent: November 11, 2003Assignee: ENSO OyjInventors: Jurkka Kuusipalo, Kimmo Nevalainen, Tapani Penttinen
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Patent number: 6638462Abstract: The present invention relates to an extrusion die assembly. Specifically, the present invention relates to an extrusion die assembly comprising a pair of extrusion dies wherein one extrusion die is disposed within the second extrusion die. The extrusion dies may comprise a plurality of extrusion die modules wherein at least one of the extrusion die modules incorporates a flat compression deal with a conical or otherwise angled spillover surface. Further, the present invention relates to a method for utilizing an extrusion die assembly comprising a pair of extrusion dies, each having at least one extrusion die module having a conical or otherwise angled spillover surface.Type: GrantFiled: July 27, 2001Date of Patent: October 28, 2003Assignee: Pechiney Emballage Flexible EuropeInventors: Randolph L. Davidson, Robert John Blemberg
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Hybrid disk-cone extrusion die module having a spillover surface surrounded by a planar seal surface
Patent number: 6638463Abstract: The present invention discloses an extrusion die module having a flat compression seal surrounding a conical or otherwise angled spillover surface. The die module promotes a flat surface to flat surface compression seal outside of the flow distribution channels and promotes better streamlined flow and material combination than a traditional flat disk die module. The die module promotes a reduced overall diameter and wetted diameter in comparison to standard flat disk dies. In addition, the conical or angled spillover surface is surrounded by the planar sealing surface. Further, the present invention relates to a method for utilizing an extrusion die module with a conical or otherwise angled spillover surface to minimize the die surface area wetted by an intermediate layer in a multi-layer coextrusion process.Type: GrantFiled: July 27, 2001Date of Patent: October 28, 2003Assignee: Pechiney Emballage Flexible EuropeInventors: Randolph L. Davidson, Robert John Blemberg -
Patent number: 6638464Abstract: The present invention discloses an extrusion die module having a flat compression seal surrounded by a conical or otherwise angled spillover surface. The die module promotes a flat surface to flat surface compression seal outside of the flow distribution channels and promotes better streamlined flow and material combination than a traditional flat disk die module. The die module promotes a reduced overall diameter and wetted diameter in comparison to standard flat disk dies. In addition, the present invention relates to an extrusion die module having a spillover surface surrounding a planar sealing surface. Further, the present invention relates to a method for utilizing an extrusion die module with a conical or otherwise angled spillover surface to minimize the die surface area wetted by an intermediate layer in a multi-layer coextrusion process.Type: GrantFiled: July 27, 2001Date of Patent: October 28, 2003Assignee: Pechiney Emballage Flexible EuropeInventors: Randolph L. Davidson, Robert John Blemberg
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Patent number: 6638461Abstract: The present invention discloses an extrusion die module having a flat compression seal and a conical or otherwise angled spillover surface. The die module promotes a flat surface to flat surface compression seal outside of the flow distribution channels and promotes better streamlined flow and material combination than a traditional flat disk die module. The die module promotes a reduced overall diameter and wetted diameter in comparison to standard flat disk dies. Further, the present invention relates to a method for utilizing an extrusion die module with a conical or otherwise angled spillover surface to minimize the die surface area wetted by an intermediate layer in a multi-layer coextrusion process.Type: GrantFiled: July 27, 2001Date of Patent: October 28, 2003Assignee: Pechiney Emballage Flexible EuropeInventors: Randolph L. Davidson, Robert John Blemberg
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Publication number: 20030193107Abstract: A method for manufacturing an animal chew toy includes providing a rubber material, such as tire rubber, and then forming the rubber material into a predetermined chew toy configuration, such as a tire. Preferably, a scent is added to the rubber material. Synthetic fibers, such as nylon or polyester fibers, are embedded in the rubber material.Type: ApplicationFiled: April 15, 2003Publication date: October 16, 2003Inventor: Charles A. Byrne