Melt Extrusion (e.g., Co-extrusion, Etc.) Patents (Class 264/173.12)
-
Patent number: 8501064Abstract: Techniques for preparing PNCs are provided. In one embodiment, a polymer extruding device may include a barrel configured to accommodate a composite material, a shaft rotatably disposed in the barrel, and a motor coupled to the shaft and configured to rotate the shaft, thereby moving the composite material. The polymer extruding device may further include a die including one or more injectors configured to inject nano particles into the die to cause shear stress to be exerted to the composite material, thereby forming a layer of the nano particles on a surface of the composite material.Type: GrantFiled: January 9, 2012Date of Patent: August 6, 2013Assignee: SNU R&DB FoundationInventor: Youngtack Shim
-
Publication number: 20130190714Abstract: Tubing comprising an inner layer, an outer layer and a middle layer, wherein the inner layer comprises a polyethylene, the outer layer comprises a thermoplastic polyurethane and the middle layer comprises an ethylene ethyl acrylate copolymer or an ethylene methyl acrylate copolymer or an anhydride grafted ethylene methyl acrylate copolymer, a copolymer of two or more of the acrylate copolymers or a mixture of two or more thereof.Type: ApplicationFiled: January 19, 2012Publication date: July 25, 2013Applicant: Tekni-Plex, IncInventors: Philip BOURGEOIS, Munish Shah
-
Publication number: 20130190723Abstract: A tube comprising an inner layer, an outer layer and a barrier layer disposed between the inner layer and the outer layer, wherein the barrier layer is bound to the outer layer by a layer of adhesive disposed between the outer layer and the barrier layer and the barrier layer is bound to the inner layer by a layer of adhesive disposed between the inner layer and the barrier layer, wherein the inner layer comprises a polyethylene, the outer layer comprises a thermoplastic polyurethane and the barrier layer comprises a material that acts as a barrier to gas.Type: ApplicationFiled: August 15, 2012Publication date: July 25, 2013Applicant: Tekni-Plex, Inc.Inventors: Philip Bourgeois, Munish Shah
-
Publication number: 20130183504Abstract: A composite body including an optional transparent cover layer (1), comprising thermoplastic acrylic polymers and optionally UV additives, a coloured second layer (2) situated underneath, comprising thermoplastic acrylic polymers, colorants and optionally UV additives, an adhesion promoter layer (3) arranged underneath the coloured second layer (2), comprising a thermoplastic material, optionally comprising UV additives and/or colorants, a fourth layer (4) arranged underneath the adhesion promoter layer (3), comprising a thermoplastic material on the basis of polyolefin, additionally containing colorants, as well as optionally UV additives and additives, which improve the adhesion properties to the adhesion promoter layer (3) situated above; a substrate layer (5) arranged underneath the fourth layer (4), comprising accumulating waste and a thermoplastic material on the basis of polyolefin as well as colorants as well as a rear cover layer (6), comprising a thermoplastic material on the basis of polyolefin, inType: ApplicationFiled: November 28, 2012Publication date: July 18, 2013Applicant: Senoplast Klepsch & Co. GmbHInventor: Senoplast Klepsch & Co. GmbH
-
Patent number: 8480836Abstract: A double-sided, slip resistant material is produced using a blown film process which produces a film having an interior heat sealable layer, a core layer of flexible polyolefin and an exterior polyolefin elastomer layer in combination with a blowing agent and optionally grit to produce a double-sided slip resistant material. A number of rollers are provided after nip rollers have fused the film together, and which form part of a machine direction orienter (MDO) that is used in line in the manufacturing process to heat, and then cool and condition (anneal and relieve any stresses and/or thickness inconsistencies in the film) prior to the film being wound onto a roll for storage.Type: GrantFiled: January 18, 2010Date of Patent: July 9, 2013Assignee: Multi Technologies Industrial L.L.C.Inventors: George M. Orlych, Mike C. Sullivan
-
Patent number: 8470222Abstract: A fiber formed from a thermoplastic composition that contains a thermoplastic starch and an aliphatic-aromatic copolyester is provided. The copolyester enhances the strength of the starch-containing fibers and also facilitates the ability of the starch to be melt processed. Due to its relatively low melting point, the aliphatic-aromatic copolyester may also be extruded with the thermoplastic starch at a temperature that is low enough to avoid substantial removal of the moisture found in the starch. Furthermore, the aliphatic-aromatic copolyester is also modified with an alcohol so that it contains one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the conditions of the alcoholysis reaction (e.g., alcohol and copolymer concentrations, temperature, etc.), the resulting modified aliphatic-aromatic copolyester may have a molecular weight that is relatively low.Type: GrantFiled: June 6, 2008Date of Patent: June 25, 2013Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Bo Shi, James H. Wang, Aimin He
-
Patent number: 8465759Abstract: A process for the preparation of a bioadhesive laminate comprising a hot-melt extruded reservoir layer and a hot-melt extruded backing layer is provided. The reservoir layer comprises a thermoplastic bioadhesive composition containing an active agent. An active agent-containing thermoplastic bioadhesive hydrophilic composition is hot-melt coextruded with a hydrophobic composition to form at least a bi-layered laminate. The hydrophilic composition and the hydrophobic composition have at least one polymer in common. In addition, the melt flow index of the hydrophobic composition is within 50% of the melt flow index of the hydrophilic composition. As a result, the laminate has a uniform transverse cross-section and/or a uniform longitudinal cross-section throughout a major of the length of the laminate. Moreover, when the laminate is divided into unit doses of approximately the same size, they have a high degree of content uniformity with respect to the active agent(s) present therein.Type: GrantFiled: March 22, 2007Date of Patent: June 18, 2013Assignee: Auxilium US Holdings, LLCInventors: Michael M. Crowley, Justin M. Keen, John J. Koleng, Feng Zhang
-
Patent number: 8460588Abstract: Coextruded films provide cross directional zoned multiple components side-by-side to one another. Systems and methods relate to coextruding such films. During coextrusion, a first polymer conjoins with a second polymer while a temperature differential is maintained between the first and second polymers. This temperature differential is selected to reduce a difference between the viscosities of the first and second polymers making the viscosity of the first polymer close enough to the viscosity of the second polymer to avoid separation upon coextrusion. Further, the films may form a layer in subsequent lamination to other material layers.Type: GrantFiled: July 30, 2007Date of Patent: June 11, 2013Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Matthew B. Lake, Bryon Paul Day
-
Publication number: 20130133726Abstract: Multi-layered protective backsheet for solar modules comprising in this order (i) an optional top layer (layer (i)), (ii) an insulating layer (layer (ii)), (iii) a back layer (layer (iii)), wherein between each layer there may or may not be one or more sublayers, wherein the top layer (i), the insulating layer (ii) and the back layer (iii) contain a polyolefin as the major component, wherein the polyolefin is selected from polyethene homo- and copolymers (PE's) and polypropene homo- and copolymers (PP's) and preferably the insulating layer (ii) has a thickness of at least 210 or at least 310 ?m. Also provided are solar modules containing the backsheets and methods for making the backsheets and for making solar modules containing the backsheets.Type: ApplicationFiled: August 16, 2011Publication date: May 30, 2013Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Andreas H. Graichen, Wolfgang G. Schöppel, Michael Jürgens
-
Patent number: 8377354Abstract: The invention relates to a method of producing a film comprising at least one layer of a thermoplastic fluoro-polymer and at least one layer of another polymer (A). The inventive method consists in using extrusion blow molding to coextrude a fluoro-polymer and polymer (A) which adhere to one another; with a layer of another thermoplastic polymer (B) such that it forms a layer which is adjacent to the fluoropolymer/polymer (A) layer According to the invention, the thermoplastic polymer (B) is incompatible with the fluoro-polymer and polymer (A) and has adequate extrudate behavior to support the layers of fluoro-polymer and/or polymer (A). Once the coextrudate has been cooled, by separating the layer(s) of (B), at least the film is recovered, said film comprising at least one layer of a polymer selected from among thermoplastic fluoro-polymers and polymers (A).Type: GrantFiled: October 11, 2002Date of Patent: February 19, 2013Assignee: Arkema FranceInventors: David Silagy, Gérard Reignier, Philippe Bussi
-
Patent number: 8361362Abstract: A method for supplying molten polymer and expanding agent flows to a mixing area, by dispersing the expanding agent in a polymer melt by a rapid dividing mixing in a first static mixer, holding and intensively dividingly mixing the thus obtained mixture in a second static mixer, cooling the mixture, during mixing, in a third static mixer to an intermediate temperature, cooling the mixture to a granulation temperature, extruding polymer threads and subsequently quenching and granulating them. During processing, a weight ratio between the polymer melt flow Gp and the expanding agent flow GBA ranges from 13.0 to 19.0, a temperature in the first static mixer for rapid dividing mixing is calculated according to formula (I), in the second and third static mixed according to formulas (II) and (III), respectively, wherein GBA max. is the quantity of a maximum possible expanding agent flow, GBBct.Type: GrantFiled: February 15, 2006Date of Patent: January 29, 2013Assignee: Sulzer Chemtech Ltd.Inventors: Maxim Nikolaevich Rogov, Halyl Halafovich Rahimov, Marat Hafisovich Ishmijarov, Sergei Ivanovich Mjachin, Alexej Vladimirovich Prokopenko, Alexandr Alexeevich Krasheninnikov, Irina Vladimirovna Mjasitsheva, Leonid Isaakovich Ginzburg, Eugenia Michailova Tarkova
-
Publication number: 20130017403Abstract: A multifunctional BOPP cigarette packaging film comprises an upper layer, a middle-upper layer, a middle layer, a middle-lower layer and a lower layer. The upper layer is a binary copolymerized polypropylene surface layer, both the middle-upper layer and the middle-lower layer are homopolymerized polypropylene antibacterial agent layers, the middle layer is a homopolymerized polypropylene stiffening agent layer, the lower layer is a binary copolymerized polypropylene bottom surface layer. Also disclosed is a manufacturing method for the multifunctional BOPP cigarette packaging film. The packaging film acts as an effective barrier, has slip property and relatively low moisture permeability as well as low cost, and is suitable for a high-speed packing machine.Type: ApplicationFiled: August 3, 2011Publication date: January 17, 2013Applicant: Zhejiang Great Southeast Packaging Co., Ltd.Inventors: Shuishou Huang, Jiayi Guo
-
Publication number: 20130017383Abstract: An object of the invention is to provide a multilayered structure having very superior gas barrier properties and being excellent in flex resistance, pinhole resistance, stretchability, thermoformability and interlayer adhesiveness, and having superior durability enabling characteristics such as high gas barrier properties to be maintained even if used with deformation such as flexion and/or stretching, and to provide a laminate in which the multilayered structure is used, and a production method thereof. Provided by the present invention is a multilayered structure in which at least 4 resin-layers constituted with a resin composition containing an ethylene-vinyl alcohol copolymer are contiguously laminated. A single layer of the resin layer has an average thickness of preferably no less than 0.01 ?m and no greater than 10 ?m. The average thickness is preferably no less than 0.1 ?m and no greater than 1,000 ?m.Type: ApplicationFiled: March 30, 2011Publication date: January 17, 2013Inventors: Shinji Tai, Hiroshi Kawai, Satoshi Yamakoshi, Kouta Isoyama, Masao Hikasa
-
Publication number: 20120311971Abstract: The present techniques provide multi-layer plastic structures and methods for making such. The multi-layer plastic structures include an inner surface made from a polyolefin resin, and resistant to environmental stress cracking, and an outer surface that includes a styrenic copolymer. The outer surface has a kinetic coefficient of friction with itself of 0.42 and a static coefficient of friction with itself of 0.44.Type: ApplicationFiled: August 23, 2012Publication date: December 13, 2012Applicants: Silgan Holdings, Inc, Chevron Phillips Chemical Company LPInventors: Lee A. Carvell, Mark Wanderlich, Susan L. Banovic, James Jalutkewicz, Charles E. Rees, Michael A. Smith
-
Publication number: 20120315416Abstract: The invention relates to a multilayer film comprising at least a tri-layer structure, said tri-layer structure being made up of a core polymer layer interposed between two covering polymer layers that each comprise polyethylene, wherein the core polymer layer comprises a melt blend of polyethylene, thermoplastic starch, and ethylene acrylic acid copolymer.Type: ApplicationFiled: July 20, 2010Publication date: December 13, 2012Applicant: TRISTANO PTY LTDInventors: Changping Chen, John Scheirs, Markus Leufgens
-
Publication number: 20120315484Abstract: A foil composite material usable as a layer in a card body of a portable data carrier, that includes one outer plastic layer, one inner plastic layer and one second outer plastic layer. All the layers jointly form a coextruded composite, and the plastic of one outer layer is a thermoplastic polymer or a mixture thereof. The plastic of the one inner layer is a mixture of at least one thermoplastic elastomer and at least one thermoplastic polymer. The plastic of the second outer layer is a thermoplastic polymer or a mixture thereof.Type: ApplicationFiled: February 23, 2011Publication date: December 13, 2012Inventors: Josef Riedl, Andreas Braun
-
Patent number: 8298464Abstract: A fabric consisting of a cellulose mixed ester fiber having an appropriate strength, fiber diameter, uniformity of fineness, and Tg, is used. A fiber consisting of 80 to 95 wt % of said cellulose mixed ester and 5 to 20 wt % of one or more water-soluble plasticizers selected from the group of polyethylene glycol, polypropylene glycol, poly(ethylene-propylene) glycol, and end-capped polymers produced from them, is produced and said water-soluble plasticizers are removed by aqueous treatment to improve the heat resistance and strength, thereby providing a fabric having beautiful appearance achieved by color development properties and uniform fineness.Type: GrantFiled: March 24, 2005Date of Patent: October 30, 2012Assignee: Toray Industries, Inc.Inventors: Hiromi Takarada, Yoshitaka Aranishi, Shoko Mihara
-
Patent number: 8273276Abstract: A roller die preformer for use in an extrusion system to form wide extruded components, such as a rubber tire tread, on a surface of a roller. The roller die preformer includes a flow inlet, a flow outlet and a laterally expanding flow channel extending from the flow inlet to the flow outlet. A flow restrictor is configured within the flow channel to urge the flow of material toward the lateral extremities of the flow channel to thereby form an extruded component at the flow outlet having a lateral width which is greater than the lateral width of the flow inlet of the preformer.Type: GrantFiled: November 12, 2004Date of Patent: September 25, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Ernest Wilford Looman, Jr., Bruce Joseph Turner
-
Publication number: 20120228796Abstract: Provided is a method for manufacturing a multilayered interlayer for safety glass that allows for reliable and easy formation of inserted layers having a larger coloring layer.Type: ApplicationFiled: March 7, 2012Publication date: September 13, 2012Inventors: Kentarou Ogino, Takeshi Yoshida, Hiroaki Inui
-
Patent number: 8252216Abstract: Durable, weather and an insect-resistant railway ties are fabricated by the co-extrusion into a die of at least one mixture comprising asphalt binder and aggregate and recycled plastic, optionally strengthened by fillers such as glass fiber or KEVLAR.Type: GrantFiled: February 26, 2010Date of Patent: August 28, 2012Assignee: Duropar Technologies, Inc.Inventors: Brian Abramson, James R. Inglis
-
Publication number: 20120208039Abstract: Monolayer contact film, designed, once made integral with a multilayer functional film, to constitute a final multilayer film of a pouch wall; the pouch having seams, and designed to be filled with biopharmaceutical product, and composed of a selected material that can be part of the composition of the final multilayer film, be in contact with the biopharmaceutical product, without degradation of the film and biopharmaceutical product, be sealable on itself, with a thickness that is less than the thickness of a single contact layer of the final multilayer film suitable for the production of seams of the single contact layer on itself, of which one surface functions as an interface for interlocking with a first interface for making the multilayer functional film integral, and whose other surface has as its final function to constitute the contact surface of the final multilayer film with the biopharmaceutical product.Type: ApplicationFiled: October 29, 2010Publication date: August 16, 2012Applicant: SARTORIUS STEDIM BIOTECH S.A.Inventors: Magali Barbaroux, Eric Chevalier, Steve Wasterlain
-
Publication number: 20120183779Abstract: Provided is a molded body in which at least one surface layer made of a copolyester polymer is laminated on one surface or both surfaces of a base layer made of aliphatic polycarbonate. When coextruding aliphatic polycarbonate and copolyester polymer, two layers adhere well to each other and are hardly delaminated from each other even without an adhesive and a tie layer, oxygen barrier property and low-temperature heat seal property can be provided as compared with a case where the copolyester polymer alone is used, the cost can be reduced because a separate adhesive or a tie layer is not required, and the manufacturing cost can be significantly reduced because the constitution of layers is simplified.Type: ApplicationFiled: November 2, 2011Publication date: July 19, 2012Applicant: SK INNOVATION CO., LTD.Inventors: MoonJung CHOI, MinHo JEON, JiEun YOO, MyungAhn OK, Kwangjin CHUNG
-
Patent number: 8221890Abstract: A multilayer composite which has improved adhesion between the layers, with the following layers: I. an inner layer I selected from among a fluoropolymer molding composition and a polyolefin molding composition; II. a bonding layer II which has the following composition: a) from 2 to 80 parts by weight of a polyamine-polyamide graft copolymer, b) from 0 to 85 parts by weight of a polyester, c) from 0 to 85 parts by weight of a polymer selected from among polyamides, fluoropolymers and polyolefins, where the sum of the parts by weight of a), b) and c) is 100; d) not more than 50 parts by weight of additives; III. a layer III of a polyester molding composition.Type: GrantFiled: October 3, 2005Date of Patent: July 17, 2012Assignee: Evonik Degussa GmbHInventors: Guido Schmitz, Harald Haeger, Hans Ries
-
Publication number: 20120141766Abstract: Disclosed are biaxially oriented laminate films including a core layer including a blend of crystalline polylactic acid polymer and crystalline polystyrene. The films are biaxially oriented at low transverse direction orientation temperatures to impart a degree of cavitation around the crystalline polystyrene such that a white opaque cavitated appearance and lower film densities are obtained. The laminate films may further have additional layers such as a heat sealable layer disposed on one side of the core layer including an amorphous polylactic acid resin and/or a polylactic acid resin-containing layer disposed on the side of the core layer opposite the heat sealable layer, a metal layer, or combinations thereof.Type: ApplicationFiled: December 7, 2011Publication date: June 7, 2012Applicant: TORAY PLASTICS (AMERICA), INC.Inventors: Claudio M. Paulino, Nao Yokota
-
Patent number: 8153242Abstract: An impact resistant bumper device that is elongated along a longitudinal axis and mountable on a mounting member, the device having a cross-section having an open undersurface configuration comprising: a first layer of a first polymer material having a first hardness or durometer; a second layer of a second polymer material having a second hardness or durometer; wherein the first layer is formed into an inner core body having an outer surface and an open undersurface; wherein the second layer is formed into a layer bonded to the outer surface of the first layer; a third layer of a third polymer material formed into an elongated strip bonded to the undersurface of the first layer; and wherein the hardness or durometer of the first polymer is selected to be readily manually bendable and compressible.Type: GrantFiled: September 23, 2008Date of Patent: April 10, 2012Assignee: Boston Metal Products CorporationInventor: James Wallace
-
Publication number: 20120028014Abstract: A monoaxially oriented film including a propylene-based random copolymer and at least about 3 wt % of a low density polyethylene which is oriented at least about 2.5 times in one direction and exhibits excellent linear directional tear properties parallel to the orientation direction and excellent heat seal performance in terms of high heat seal strengths and low seal initiation temperature. This film formulation and orientation is suitable for pouch applications requiring an “easy-tear” linear tear feature and excellent hermetic seal properties.Type: ApplicationFiled: July 28, 2011Publication date: February 2, 2012Applicant: TORAY PLASTICS (AMERICA), INC.Inventors: Harold Egon KOEHN, Matthew H. Brown
-
Publication number: 20110293930Abstract: In some embodiments, a multilayer sheet comprises: a first cap layer formed from a first cap composition comprising polycarbonate and potassium perfluorobutane sulfonate; a second cap layer formed from a second cap composition comprising polycarbonate and potassium perfluorobutane sulfonate; and a core layer formed from a core composition comprising polycarbonate and without potassium perfluorobutane sulfonate. The core layer is disposed between the first cap layer and the second cap layer.Type: ApplicationFiled: May 25, 2011Publication date: December 1, 2011Applicant: SABIC INNOVATIVE PLASTICS IP B.V.Inventors: Bernardus Johannes Paulus Jansen, Christianus Johannes Jacobus Maas, Andries Adriaan Volkers
-
Patent number: 8048352Abstract: Medical devices and methods of making the devices are described. In some embodiments, the methods include a method of manufacturing a device including a first layer and a second layer, the method including the steps of selecting a material for the second layer, the material having a viscosity value at a shear rate of about 1 s?1 or less and at a selected temperature; selecting a nanocomposite material for the first layer that has a viscosity within about 20% to about 125% of the viscosity value of the material for the second layer; and co-extruding the first and second layers.Type: GrantFiled: February 24, 2009Date of Patent: November 1, 2011Assignee: Boston Scientific Scimed, Inc.Inventors: Douglas A. Devens, Jr., Michele Zoromski
-
Patent number: 8048353Abstract: A multilayer polymeric product is described, which consists of a co-extruded internal central layer of polyethylene terephthalate (PET) copolymer, in a quantity ranging from 80 to 90% by weight with respect to the total weight of the internal layer, mixed with polycarbonate (PC), in a quantity ranging from 10 to 20% by weight with respect to the total weight of the layer, and outer, side layers, of a blend of PET, in a quantity ranging from 15 to 25% by weight with respect to the total weight of the outer layers, and PC, in a quantity ranging from 75 to 85% by weight with respect to the total weight of said outer layers, in particular for use as a building material.Type: GrantFiled: March 12, 2010Date of Patent: November 1, 2011Assignee: Politec Polimeri Tecnici S.A.Inventor: Cosimo Conterno
-
Patent number: 8048351Abstract: A hose for use in bio-pharmaceutical applications includes an innermost tubular layer made from a fluoropolymer material. The tubular layer has an inner, relatively smooth and pure surface that defines an opening for transfer of various media. A layer of silicone is disposed next to an outer surface of the innermost tubular layer through use of, for example, an extrusion method. The outer surface of the tubular layer may first be modified by various treatments or chemicals to facilitate the adhesion of the silicone layer thereto. The silicone material may be solid or foamed. A reinforcement layer may be disposed adjacent to an outer surface of the silicone layer. The reinforcement layer may be formed of a wire braid having gaps. An outer jacket of silicone may be attached to the reinforcement layer and to the inner silicone layer through the gaps in the reinforcement layer.Type: GrantFiled: August 14, 2006Date of Patent: November 1, 2011Assignee: Swagelok CompanyInventor: Robert Bentley
-
Publication number: 20110244221Abstract: Provided is the following novel pressure-sensitive adhesive tape. The pressure-sensitive adhesive tape has a moderately weak adhesion during a time period from a production process (during its production) to the time of the accomplishment of the product as a result of the completion of the production (immediately after the production). Accordingly, a peeling failure and the occurrence of a wrinkle resulting from strong adherence of a pressure-sensitive adhesive layer to a roll or the like at the time of the production can be sufficiently suppressed. As a result, stable product supply can be performed. On the other hand, the pressure-sensitive adhesive tape can express a sufficiently strong adhesion for an adherend after a lapse of a predetermined time from the production (e.g., at the time of its use).Type: ApplicationFiled: February 11, 2011Publication date: October 6, 2011Applicant: NITTO DENKO CORPORATIONInventors: Naoto HAYASHI, Shinsuke IKISHIMA, Kooki OOYAMA, Keiji HAYASHI, Shou UCHIDA, Kouhei TAKEDA, Ryohei SAWAZAKI
-
Publication number: 20110244185Abstract: Described are biaxially oriented polylactic acid (BOPLA) films with a novel formulation that exhibits a softer feel and quieter sound, without jeopardizing film making stability. The films can be used, for example, in packaging applications. The films can be metallized, or combined with barrier coatings or layers, for improved gas barrier properties particularly for moisture vapor transmission barrier desired in packaging applications. The films can also be printing films for packaging applications and may be transparent or matte in appearance. The films have characteristics that are beneficial to converting processes, are economical, and maintain bio-compostability similar to typical BOPLA films.Type: ApplicationFiled: December 23, 2010Publication date: October 6, 2011Applicant: TORAY PLASTICS (AMERICA), INC.Inventors: Shichen DOU, Mark S. Lee, Claudio M. Paulino, Nao Yokota, Keunsuk P. Chang
-
Patent number: 7998385Abstract: A transparent multilayer stretched product is produced through a process including: providing a resin laminate including at least on layer of polyglycolic acid resin, heat-forming and cooling the resin laminate, reheating the resin laminate until the polyglycolic acid resin is crystallized to be opaque and then stretching the reheated resin laminate. The thus-obtained multilayer stretched product is excellent in gas-barrier property in addition to the transparency and is suitable as a packaging material or container.Type: GrantFiled: September 29, 2004Date of Patent: August 16, 2011Assignee: Kureha CorporationInventors: Kazuyuki Yamane, Ryo Kato, Hisanori Tobita
-
Publication number: 20110192553Abstract: The invention relates to an at least three-layer, biaxially oriented polyester film with two white outer layers and carbon-black-filled base layer, where the thickness of the outer layers is from 4 to 15 ?m, the thickness of the base layer is ?the total of the thicknesses of the outer layers, the white outer layers comprise at least 15% by weight of TiO2, the base layer comprises at least 4% by weight of TiO2, the carbon-black-containing base layer comprises from 1 to 8% by weight of carbon black, and the SV value of the film is at least 600, where all % by weight data are based on the weight of the respective layer, and also to a process for the production of this type of film and to the use of the film in particular in blinds, including roller blinds, Venetian blinds, or projection screens, or in displays.Type: ApplicationFiled: February 5, 2010Publication date: August 11, 2011Inventors: Holger KLIESCH, Bodo Kuhmann, Dirk Broeder, Ingo Fischer
-
Patent number: 7993559Abstract: A method of co-extrusion is used to prepare a thermal imaging element such as a thermal dye receiver element. In this method, two or three of an image receiving layer, an antistatic tie layer, and a compliant layer are co-extruded and these co-extruded multiple layers can be disposed on a support to provide a smooth outer surface and reduced delamination among layers especially in a high humidity environment.Type: GrantFiled: June 24, 2009Date of Patent: August 9, 2011Assignee: Eastman Kodak CompanyInventors: Narasimharao Dontula, Somsack Chang, Brian Thomas
-
Patent number: 7976925Abstract: New cross-laminates are formed of films of which at least two are uniaxially or unbalanced biaxially oriented, in which the main direction of orientation in one of these films crosses the main direction of orientation in the other one, having modifications, made in a suitable pattern, of the surface properties of the two films on the surfaces which are inside the laminate and are bonded to each other. The internally arranged surface layers of the films comprise an array of strands (101, 102) of coextruded material and the films are arranged so that the arrays of the two films cross one another. The strands may be used to control adhesion between the films and reduce the tendency to delaminate on repeated flexing, making a laminate suitable for use as a tarpaulin.Type: GrantFiled: March 3, 2003Date of Patent: July 12, 2011Inventor: Ole-Bendt Rasmussen
-
Patent number: 7972546Abstract: Useful composites and methods of using such composites are provided. The composites include an outer layer containing a first polymeric material, an intermediate layer circumscribed by the outer layer and containing a second polymeric material, and an inner layer circumscribed by the intermediate layer and containing a third polymeric material. The inner layer, in combination with the intermediate layer, is structured and effective to reinforce the composite relative to a substantially identical composite without the inner layer. The present composites can be produced using co-extrusion processing.Type: GrantFiled: August 4, 2008Date of Patent: July 5, 2011Assignee: Tamko Building Products, Inc.Inventors: Roderick E. Hughes, Kevin Fidati, Joe Schiff, Jack Cuttle, George Vuduris
-
Patent number: 7968026Abstract: The invention relates to the use of Fused Deposition Modeling to construct three-dimensional (3D) bioresorbable scaffolds from bioresorbable polymers such as polycaprolactone (PCL), or from composites of bioresorbable polymers and ceramics, such as polycaprolactone/hydroxyapatite (PCL/HA). Incorporation of a bioresorbable ceramic to produce a hybrid/composite material support provides the desired degradation and resorption kinetics. Such a composite material improves the biocompatibility and hard tissue integration and allows for increased initial flash spread of serum proteins. The basic resorption products of the composite also avoids the formation of an unfavorable environment for hard tissue cells due to a decreased pH. The scaffolds have applications in tissue engineering, e.g., in tissue engineering bone and cartilage.Type: GrantFiled: April 20, 2004Date of Patent: June 28, 2011Assignee: Osteopore International Ltd.Inventors: Swee Hin Teoh, Dietmar Werner Hutmacher, Kim Cheng Tan, Kock Fye Tam, Iwan Zein
-
Publication number: 20110129284Abstract: The invention relates to a writing, drawing, decorating or cosmetic pencil comprising a colour-delivering, polymer-bonded lead and a polymer-bonded wood substitute material, the wood substitute material at least partly covering or surrounding the lead along its length, there being disposed, between the lead and the wood substitute material, at least one adhesion promoter layer, the lead and the wood substitute material each comprising at least one polymer, the at least one polymer in the lead being incompatible with the at least one further polymer in the wood substitute material, and the at least one adhesion promoter layer coupling on the one hand to the at least one polymer in the lead and on the other hand to the at least one further polymer in the wood substitute material.Type: ApplicationFiled: July 11, 2009Publication date: June 2, 2011Applicant: J.S. STAEDTLER GMBH & CO. KGInventors: Andreas Thies, Nikolas Lins, Christine Delapierre-Kohl, Johannes Herbolsheimer, Martin Jakob, Harald Lang, Simone Arthen
-
Patent number: 7951438Abstract: A metallized laminate film exhibiting improved moisture barrier property as well as maintaining a high bio-polymer content and degradability property is disclosed. The laminate film includes a first core layer of polylactic acid polymer and a second skin layer comprising a polyolefin metal receiving layer. The metal receiving layer or the core layer, or both, may be blended with an amount of polar-modified tie-resin to improve bonding. Alternatively, a discrete tie-resin layer may be interposed between the polyolefin metal receiving layer and the crystalline polylactic acid polymer core layer. The polyolefin metal receiving layer may be discharge-treated on the side opposite the core layer and metallized.Type: GrantFiled: December 10, 2008Date of Patent: May 31, 2011Assignee: Toray Plastics (America), Inc.Inventors: Mark S. Lee, Keunsuk P. Chang
-
Patent number: 7938999Abstract: An object of the present invention is to provide: a process for conveniently producing a fiber with high strength, regardless of molecular weight polymer composition, or the like of PHAs, which vary depending on origins such as a wild-type PHAs-producing microorganism product, a genetically modified strain product, and a chemical product; and the fiber with high strength produced through the process. The present invention provides: a process for producing a fiber, comprising: melt-extruding polyhydroxyalkanoic acid to form a melt-extruded fiber; rapidly quenching the melt-extruded fiber to the glass transition temperature of polyhydroxyalkanoic acid +15° C. or less, and solidifying the fiber to form an amorphous fiber; forming a crystalline fiber by leaving the amorphous fiber to stand at the glass transition temperature +15° C. or less; drawing the crystalline fiber; and further subjecting the crystalline fiber to stretch heat treatment.Type: GrantFiled: August 4, 2005Date of Patent: May 10, 2011Assignee: RikenInventors: Tadahisa Iwata, Toshihisa Tanaka, Yoshiharu Doi
-
Patent number: 7910032Abstract: The present invention provides an exemplary process for manufacturing a flexible packaging laminate into a pouch for containing liquids such as edible oil. The process includes taking granules of polypropylene and medium density polyethylene in a proportion of 1-1.5:1.5-2.5, —melting the granules at 200-230 degrees Celsius in a 3 layer blown film extruder to form a co-extruded film, —printing the film by a Rotogravure printing technique at 40-60 degrees Celsius, —laminating the printed film with a conventional 5 layer co-extruded nylon film at 60-80 degrees Celsius, —curing the laminated film at 35-45 degrees Celsius for at least 2 days, —and slitting the cured laminated film to a desired size for using with a Form Fill Seal machine (FFS Machine) at 160-180 degrees Celsius, to make pouches that hold liquids, such as edible oil.Type: GrantFiled: December 14, 2005Date of Patent: March 22, 2011Assignee: Cargill India Private LimitedInventor: Mukul Kumar
-
Patent number: 7906052Abstract: An ion-conductive membrane that includes a first layer comprising a first ionomer, and a porous polymer substrate, where at least a portion of the first ionomer is interpenetrated within the porous polymer substrate by ionomer-induced phase separation.Type: GrantFiled: December 22, 2008Date of Patent: March 15, 2011Assignee: 3M Innovative Properties CompanyInventors: Ilyess Hadj Romdhane, Scott L. Ciliske
-
Publication number: 20110049003Abstract: A multi-layer film structure for use in forming blister packaging. The multi-layer structure includes a first polymeric layer having a first surface and a second surface, the first polymeric layer comprising a metalized polyethylene teraphthalate, a second polymeric layer having a first surface and a second surface, the first surface of the second polymeric layer disposed adjacent the second surface of the first polymeric layer, the second polymeric layer comprising a cyclic olefin or a homopolymer of chlorotrifluoroethylene, and a third polymeric layer having a first surface and a second surface, the first surface of the third polymeric layer disposed adjacent the second surface of the second polymeric layer, the third polymeric layer comprising polypropylene or polyvinyl chloride. A method of making a multi-layer film structure and a packaging structure are also provided.Type: ApplicationFiled: September 1, 2009Publication date: March 3, 2011Applicant: PHILIP MORRIS USA INC.Inventors: Stephen J. Bellamah, Ed Carmines, Rangaraj S. Sundar
-
Patent number: 7892475Abstract: It has been discovered that the properties of sheet or film materials of broad molecular weight distribution ethylene/propylene rubber impact-modified heterophasic copolymer (ICP) can be improved by blending the ICP with a second polyolefin. The second polyolefin may be a syndiotactic polypropylene (sPP), a random copolymer (RCP) of propylene and comonomer (e.g. ethylene and/or butene) made using a Ziegler-Natta or metallocene catalyst, medium density polyethylene (MDPE), linear low density polyethylene (LLDPE), or low crystalline copolymer of propylene/?-olefin. Improvements include, but are not necessarily limited to, reduced motor amps, lower secant modulus, increased dart drop strength, increased gloss, reduced haze, increased elongation to yield, elimination of stress whitening, improved puncture resistance, and decreased seal initiation temperature. This sheet of film materials may be co-extruded with other resins or laminated with other materials after extrusion.Type: GrantFiled: October 7, 2008Date of Patent: February 22, 2011Assignee: Fina Technology, Inc.Inventors: Juan Jose Aguirre, Michael McLeod, Rodolfo Mier, Nguong van Nguyen
-
Patent number: 7883652Abstract: Polydiorganosiloxane polyoxamide, linear, block copolymers and methods of making the copolymers are provided. The method of making the copolymers involves reacting a diamine with a precursor having at least one polydiorganosiloxane segment and at least two oxalyamino groups. The polydiorganosiloxane polyoxamide block copolymers are of the (AB)n type.Type: GrantFiled: January 29, 2009Date of Patent: February 8, 2011Assignee: 3M Innovative Properties CompanyInventors: Charles M. Leir, Karl E. Benson, Richard G. Hansen, Mark D. Purgett, Albert I. Everaerts, Audrey A. Sherman
-
Patent number: 7882671Abstract: A multi-layer roofing membrane is provided including a top sheet including a co-extruded cap and inner layer and a bottom sheet. The use of a co-extrusion die allows for multi-layer sheets that reduce the need for expensive fillers in all but a cap layer of the membrane. A scrim reinforcement layer is optionally embedded in the membrane. When installed on a roof substrate, the membrane can be sealed by heat welding the seams of the membrane sheets or by other means.Type: GrantFiled: February 21, 2007Date of Patent: February 8, 2011Inventors: Douglas Bruce, Greg Sharrun, Richard Peng
-
Publication number: 20100327480Abstract: A method of co-extrusion is used to prepare a thermal imaging element such as a thermal dye receiver element. In this method, two or three of an image receiving layer, an antistatic tie layer, and a compliant layer are co-extruded and these co-extruded multiple layers can be disposed on a support to provide a smooth outer surface and reduced delamination among layers especially in a high humidity environment.Type: ApplicationFiled: June 24, 2009Publication date: December 30, 2010Inventors: Narasimharao Dontula, Somsack Chang, Brian Thomas
-
Patent number: 7858006Abstract: An apparatus is provided for manufacturing a laminated sheet wherein different molten resins are alternately laminated by providing a multitude of slits arranged at intervals and permitting the different molten resins to flow out from the adjacent slits. A value of a shortest flow path length (L1) to a longest flow path length (L2) of the molten resin that flows from an inlet to an outlet of the slit, which is a ratio of (L1)/(L2), is 0.5 or more. The slits include slits having different slit lengths. A flow quantity of the molten resin at the slit is changed by changing the intervals of the slits, length of the slits or by changing the temperature of the molten resin at the slits.Type: GrantFiled: September 22, 2005Date of Patent: December 28, 2010Assignee: Toray Industries, Inc.Inventors: Yoshiharu Furuno, Fumiyasu Nomura, Nobutsugu Chigira
-
Patent number: 7854987Abstract: The present invention relates to a thermal laminating film comprising: a base layer of biaxially oriented polypropylene (BOPP) film and a thermal laminating layer disposed on the outer surface of the base layer, wherein the said thermal laminating layer comprises 100% by weight of an ethylene vinyl acetate copolymer containing from 10% to 30% by weight of vinyl acetate units and having melt flow index of 18 to 30 or polyethylene or EAA or a blend of all these.Type: GrantFiled: May 31, 2007Date of Patent: December 21, 2010Assignee: Cosmo Films Ltd.Inventor: Ashok Jaipuria