Chemical Blowing Patents (Class 264/54)
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Publication number: 20100301511Abstract: An oriented polymer composition containing thirty to 95 weight-percent inert inorganic filler and a continuous phase of at least one orientable polymer contains void spaces due to cavitation and has a density of less than 0.8 grams per cubic centimeter, a flexural modulus of 1.4 gigapascals or more, cross section dimensions all greater than 1.5 millimeters, a delamination force value of 44.5 Newtons (ten pounds force) or more and little or no blowing agent.Type: ApplicationFiled: June 23, 2010Publication date: December 2, 2010Inventors: Kevin L. Nichols, Brett M. Birchmeier, Ian M. Ward, Philip D. Coates, Phil Caton-Rose, Glen P. Thompson, Vijay Wani, Rajen M. Patel
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Publication number: 20100295201Abstract: The present invention is a process for producing a thermosetting resin foamed plate, comprising a step of discharging a resin composition obtained by mixing at least a thermosetting resin, a foaming agent and a curing agent onto a surface material and foaming and curing the resin composition, wherein the resin composition is supplied into a die from a plurality of inlets of the die by a plurality of branched channels to reside, and the resin composition is discharged from a die lip outlet onto the surface material into a plate form.Type: ApplicationFiled: November 14, 2008Publication date: November 25, 2010Applicant: Asahi Kasei Construction Materials CorporationInventors: Hisashi Mihori, Hideaki Ohkubo
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Patent number: 7837910Abstract: A method of forming a hardened skin on a surface of a molded article. In an exemplary method, a formable material is mixed with a blowing agent to form a foam material. The foam material is placed in a flow molding apparatus such that the top surface of the foam material is in contact with the top mold of the apparatus and the bottom surface of the foam material is in contact with the bottom mold of the apparatus. In operation, an alternating dielectric field is applied across the foam material to form the molded article. At the end of the molding cycle, the bottom surface of the foam material remains under the decomposition temperature of the blowing agent so as to form a hardened skin on the molded article.Type: GrantFiled: July 14, 2004Date of Patent: November 23, 2010Assignee: Vertex L.L.C.Inventor: Michel Marc
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Publication number: 20100291370Abstract: Composite laminated article having: a first layer of a closed cell foam of a thermoplastic material, a second layer of a fibre-reinforced resin, the resin adhering a surface of the second layer to a surface of the first layer, wherein the closed cell foam has an average cell size of from 15 to 75 microns.Type: ApplicationFiled: October 6, 2008Publication date: November 18, 2010Applicant: Gurit (UK) Ltd.Inventor: Daniel Thomas Jones
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Publication number: 20100283170Abstract: The present invention provides a fabricating method for sleeve-type ornament of display device, comprising the steps of: a step of providing a display device, a 3D image file is provided with respect to the display device; a step of shaping an ornament, the surface of the decoration portion of the display device is shaped with a shaping material, so a layer of original ornament mold is formed on the surface of the decoration portion of the display device; a step of scanning the original ornament mold, a scanner is used to scan the shape of the original ornament mold, and the obtained data is transferred to a computer for establishing a 3D image file of the original ornament mold; a step of establishing a 3D image file of the ornament, the scanned 3D image file of the original ornament mold and the 3D image file of the display device are opened through a software in a computer, and the images of the two 3D image files are overlapped, part of the image of the display device that is overlapped within the image oType: ApplicationFiled: August 1, 2009Publication date: November 11, 2010Inventor: Wen-Hung HUANG
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Publication number: 20100252947Abstract: A foaming composition comprising a melt processible fluoropolymer, and a chemical foaming agent, where the chemical foaming agent is ammonium polyphosphate.Type: ApplicationFiled: June 22, 2010Publication date: October 7, 2010Inventors: Susanne Brix, Friedrich Müller, Christian Lankes, Alfred Gemmel, Olivier Pinto, Mikael Abeguile, Jérôme Alric, Thierry Auvray, Paul Kroushl
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Publication number: 20100234483Abstract: Molded polyurethane foams are provided which are useful as seals and have an ultimate elongation of at least about 300%. The foams may be formed from a first composition including a polyol, a chain extender, optional surfactants, catalysts, and blowing agents, in combination with a second composition including a polyol and an isocyanate.Type: ApplicationFiled: February 1, 2010Publication date: September 16, 2010Inventors: Jason Sung, Gene A. Stellon, Caren L. Necio, Aisa Sendijarevic, Vahid Sendijarevic
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Publication number: 20100227124Abstract: A floor mat and a method of making the floor mat are provided. The method may include forming a foam polyvinyl chloride body of a floor mat. The body may be embossed to form one or more thicker and thinner regions of the body. Moreover the thicker and thinner regions may be arranged to define panels and folding lines of the body such that the panels are foldable relative to each other. In some embodiments, the body may include a plurality of fold lines between adjacent panels to allow for a large folding radius. Other operations of the method may include embroidering a design onto the body or attaching a fabric layer to a top surface of the body of the floor mat.Type: ApplicationFiled: March 3, 2009Publication date: September 9, 2010Inventor: Nadav Sharir
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Publication number: 20100222442Abstract: Expandable thermoplastic polyurethane comprising blowing agent, wherein the Shore hardness of the thermoplastic polyurethane is from A 44 to A 84.Type: ApplicationFiled: January 12, 2007Publication date: September 2, 2010Applicant: BASF SEInventors: Frank Prissok, Frank Braun
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Publication number: 20100201016Abstract: Foaming polypropylene resin compositions are excellent in balance between melt tension and flowability, can give injection-molded foams having superior mechanical strength such as impact resistance, and are suited for the production of automobile parts or the like. Processes of the invention produce injection-molded foams from the compositions. A foaming polypropylene resin composition according to the present invention includes a polypropylene resin (A) and an ethylene/?-olefin having 3-10 carbon atoms copolymer (B) in a specific ratio; the ethylene/?-olefin having 3-10-carbon atoms copolymer (B) includes a higher molecular weight component (B-H) having MFR190 of 1 to 10 g/10 min and a lower molecular weight component (B-L) having MFR190 of 20 to 50 g/10 min; and the weight ratio between (B-H) and (B-L), (B-H):(B-L), is in the range of 6:4 to 2:8.Type: ApplicationFiled: September 19, 2008Publication date: August 12, 2010Inventor: Tatsuji Kawamura
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Publication number: 20100189989Abstract: A soft insert component (43) having a rigid body portion (42) in the vicinity of a marginal part of one surface side is insert molded in integration to a foamed molding (51), the foamed molding (51) with the soft insert component (43) includes a triple layered structure having a skin material (52), a core material (53) and a foamed layer (54), the skin material (52) includes an insert component fixing portion (55) onto which the soft insert component (43) can be fixed, the core material (53) includes a rigid body-supporting portion (61) able to support the rigid body portion (42) while resisting against a compression force applied to the soft insert component (43) during foam molding, the foamed layer (54) is formed between the core material (53), the skin material (52) and the soft insert component (43).Type: ApplicationFiled: March 27, 2008Publication date: July 29, 2010Inventor: Shigeyuki Katou
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Publication number: 20100159225Abstract: A method of making a composite article includes providing an elastomeric composition with a blowing agent having an activation temperature and providing at least one structural member defining a fixed gap. The composition is formed below the blowing agent's activation temperature into a solid elastomeric member approximately the thickness of or larger than the gap. The elastomeric member is assembled into the gap, which may place the elastomeric member in a state of compression in the gap. The elastomeric member is then expanded by heating it above the activation temperature. During expansion, the escape of the gas produced is limited to increase the state of compression of the elastomer in the gap by means of confining any free surfaces or by including a platy filler such as nanoclay in the composition.Type: ApplicationFiled: December 22, 2008Publication date: June 24, 2010Applicant: THE GATES CORPORATIONInventors: YAHYA HODJAT, YUDING FENG, KATHY LAMBRINOS
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Patent number: 7704437Abstract: A compounded rubber, which is made up of an NBR polymer, an organic peroxide and a blowing agent, to which 1 to 100 parts by weight of a synthetic silicic acid serving as a reinforcing filler and 10 to 200 parts by weight of precipitated calcium carbonate having a prismatic particle shape and serving as a filler are added to 100 parts by weight of the NBR polymer, is extrusion molded by a continuous extruder, and heated by HA heating and UHF heating in combination throughout the rubber to cause vulcanization and expansion, thereby providing a thick sponge having a homogenous cell structure. The sponge is passed through press rolls, and the resulting sheet stock is cut or punched with a cutting or punching machine into pieces of a desired form to obtain an applicator for cosmetics.Type: GrantFiled: August 27, 2008Date of Patent: April 27, 2010Assignee: Nishikawa Rubber Co., Ltd.Inventors: Yuichi Yamato, Kenji Kurisu
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Publication number: 20100096768Abstract: To provide a process for producing a flexible polyurethane foam having a higher biomass degree than a conventional flexible polyurethane foam and excellent in foam physical properties and its appearance. A polymer-dispersed polyol obtained by polymerizing a vinyl monomer in the presence of the following polyol (a1) derived from a natural fat/oil and/or the following polyoxyalkylene polyol (a2) is used: Polyol (a1) derived from a natural fat/oil: a polyol derived from a natural fat/oil, which is obtained by providing a natural fat/oil with hydroxy groups by chemical reaction, and which has a hydroxy value of from 20 to 250 mgKOH/g and a molecular weight distribution of at least 1.Type: ApplicationFiled: December 22, 2009Publication date: April 22, 2010Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Takayuki SASAKI, Yasuyuki Sasao, Naohiro Kumagai, Chitoshi Suzuki, Shigeru Ikai
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Publication number: 20100098934Abstract: An elastomeric urethane composition that is substantially free of particulates includes the reaction product of a resin composition, including a polyetherol, and an isocyanate. The resin composition and the isocyanate are reacted, in the presence of a catalyst, to form a polyurethane elastomer. The catalyst includes a metal selected from the group of titanium, zirconium and hafnium. The elastomeric urethane composition is used in a method of making an article in a mold. The method includes reacting the resin composition and the isocyanate to form the elastomeric urethane composition, applying the elastomeric urethane composition to the mold cavity, and allowing the elastomeric urethane composition to cure to form a first layer. The method also includes applying a urethane composition, different from the elastomeric urethane composition, to the mold to form a second layer. The method further includes curing the article in the mold and de-molding the article from the mold.Type: ApplicationFiled: July 8, 2005Publication date: April 22, 2010Inventor: Robert B. Stearns
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Publication number: 20100080979Abstract: [Problems] To provide: a polypropylene resin composition which can produce an expansion-molded article showing excellent low-temperature impact properties even when expanded at an increased expansion rate; an expansion-molded article using the polypropylene resin composition, which has excellent low-temperature impact properties, is light in weight, and has good appearance; and a process for producing the expansion-molded article. [Solution] Using a polypropylene resin composition comprising 100 weight of a polypropylene resin and 1 to 4 parts by weight of a polyethylene wax having a viscosity average molecular weight of 2400 to 3400, an expansion-molded article which is expanded at an expansion rate of 1.5 to 3 times is produced by injection expansion molding by means of a gas counter pressure technique.Type: ApplicationFiled: September 28, 2007Publication date: April 1, 2010Inventors: Yasuji Kanamitsu, Kiminori Sato, Satoru Tominaga, Atsushi Wada, Hiroyuki Hirano
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Publication number: 20100050875Abstract: A gas exchange membrane is for use in an artificial lung. The membrane consists of a foamed, closed-cell material, in particular of silicone rubber. The membrane is produced by extruding a basic material which contains a foaming agent. The extrudate is then foamed. The result is a gas exchange membrane which has an increased gas exchange performance compared to known material due to the high permeability of the surface.Type: ApplicationFiled: January 8, 2008Publication date: March 4, 2010Applicant: RAUMEDIC AGInventor: Ralf Ziembinski
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Publication number: 20100038812Abstract: An automobile wallpaper, and an exterior surface finishing agent for the door trim, seats, and so on, of automobiles, as well as its manufacturing method. To manufacture such automobile wallpaper, a printing process is performed on the surface of a surface material which is currently being used, in order to render a three-dimensional effect to the surface, so as to achieve various luxurious appearances. The three-dimensional effect of the printing is maintained even during the molding process, and it also possesses excellent properties relative to sound absorbency, due to the three-dimensional effect of the surface.Type: ApplicationFiled: October 16, 2009Publication date: February 18, 2010Applicant: Carl Freudenberg KGInventors: SungYong Ryu, YongWon Jin
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Publication number: 20100025877Abstract: Process for the production of moldings from nanoporous polymer materials, comprising the stages of a) preparation of a multiphase polymer mixture with domains in the range from 5 to 200 nm, b) impregnation of the polymer mixture with a blowing agent, where the solubility of the blowing agent in the phase forming the domains is at least twice as high as in the adjacent phases, c) expansion of the multiphase polymer mixture comprising blowing agent, by introducing the polymer mixture into a cavity and expanding it therein, thus obtaining the molding.Type: ApplicationFiled: June 27, 2007Publication date: February 4, 2010Applicant: BASF AKTIENGESELLSCHAFTInventors: Andre Guerin Moreira, Marc Bothe, Volker Schädler, Markus Allmendinger, Pedro Manuel Sampaio Lopes, Bernd Sowart, Timothy Francis, Erik Wassner, Christian Schade, Daniela Longo, Siljana Lietz, Volker Alstädt, Jan Sandler
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Publication number: 20090297779Abstract: An article comprising an integral skin polyurethane foam section formed in a single injection step from a reaction mixture comprising at least one polyisocyanate, at least one polyol and at least one carbamate blowing agent, and wherein the polyurethane foam section comprises at least two portions of differing thicknesses. A method of producing the article.Type: ApplicationFiled: September 20, 2007Publication date: December 3, 2009Inventor: Maurizio Bottazzi
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Publication number: 20090298960Abstract: A composition containing at least one epoxy resin, at least one phenol compound that is solid at room temperature, at least one polyether amine, at least one propellant, at least one hardener, at least one filler suitable for manufacturing structural foams that are notable for ductile behavior under compressive or flexural loading, i.e. an elastic deformation is observed under compressive load or in the three-point flexural test.Type: ApplicationFiled: April 20, 2009Publication date: December 3, 2009Applicant: Henkel AG & Co. KGaAInventors: Xaver Muenz, Larissa Bobb
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Publication number: 20090206502Abstract: A foaming composition comprising a melt processible fluoropolymer, and a chemical foaming agent, where the chemical foaming agent is ammonium polyphosphate.Type: ApplicationFiled: November 26, 2008Publication date: August 20, 2009Inventors: Susanne Brix, Friedrich Muller, Christian Lankes, Alfred Gemmel, Olivier Pinto, Mikael Abeguile, Jerome Alric, Thierry Auvray, Paul Kroushl
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Patent number: 7556756Abstract: The present invention provides a method for producing a polyurethane foam molded article from a polyisocyanate compound, a polyol mixture containing polyol, a catalyst and a crosslinking agent, and a blowing agent, said method comprising continuously injecting the polyisocyanate compound, the polyol mixture and the blowing agent into a mold, using a molding machine capable of separately supplying the polyisocyanate compound, the polyol mixture and the blowing agent, while the timing of starting to inject the blowing agent is delayed after the start of injecting the polyisocyanate compound and the polyol mixture. The inventive method produces, in a single stage, a polyurethane foam molded article having the skin or high density portion selectively formed on portions of the molded article actually requiring them, where the proportions of the skin and the high density portion and the foamed core can be varied freely.Type: GrantFiled: December 14, 2005Date of Patent: July 7, 2009Assignee: Bayer MaterialScience AGInventors: Masafumi Nakamura, Hiroshi Ikuta, Masaru Suzuki, Hitoshi Maeda
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Publication number: 20090162649Abstract: The present invention relates to a process for producing a catalytically active porous shaped body, which comprises the steps: a) provision of a catalytically active powder consisting essentially of particles having a defined internal porosity, b) intimate mixing of the powder with a ball-shaped or spherical inelastic pore former and/or a binder, c) shaping of the mixture from step b) to form a shaped body, d) calcination of the shaped body obtained in step c). The invention further relates to a shaped body produced by the process of the invention.Type: ApplicationFiled: October 31, 2006Publication date: June 25, 2009Inventors: Arno Tissler, Volker Kurth, Attila Jambor
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Publication number: 20090149560Abstract: The object is to provide a molded product of foamed particles obtained by charging biodegradable resin foamed particles which are of vegetable origin and excellent in environmental compatibility into a mold, followed by heat molding, which molded product is not accompanied by post shrinkage after the molding with a wide range of variation of processing in the molding. Further, P3HA resin foamed particles being composed of a resin composition that comprises an isocyanate compound, and a polymer, poly(3-hydroxyalkanoate), having a recurring unit represented by the general formula (1): [—O—CHR—CH2—CO—]??(1) (wherein R represents an alkyl group represented by CnH2n+1, wherein n is an integer of from 1 to 15) produced by a microorganism are provided.Type: ApplicationFiled: April 10, 2006Publication date: June 11, 2009Applicant: KANEKA CORPORATIONInventors: Toshio Miyagawa, Fuminobu Hirose, Kenichi Senda
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Patent number: 7540985Abstract: A method of producing a polyurethane molded article is provided, in which one molding machine which can provide distinctly polyisocyanate component(s) and two kinds of polyol components is used, and prior to completion of the feed of a first polyurethane mixture liquid containing a polyisocyanate and a polyol component without a blowing agent into a mold, a second polyurethane mixture liquid containing a polyisocyanate and a second polyol component with a blowing agent is fed into the mold. The method produces, in a single stage, a polyurethane foam molded article having the skin or high density portion selectively formed on portions of the molded article actually requiring them, where the proportions of the skin and the high density portion and the foamed core can be varied freely.Type: GrantFiled: December 14, 2005Date of Patent: June 2, 2009Assignee: Bayer MaterialScience AGInventors: Masafumi Nakamura, Masaru Suzuki, Hitoshi Maeda
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Publication number: 20090044830Abstract: A rotatable base (100) for a porous pad (500) has openings (126, 130, 134) that provide for improved flow distribution of a liquid in the base (100) across a substrate. The rotatable base (100) can be molded from a two piece mold and the openings (126, 130, 134) can have draft angles to facilitate the molding process.Type: ApplicationFiled: November 21, 2006Publication date: February 19, 2009Applicant: ENTEGRIS, INC.Inventors: Christopher Wargo, Thomas Leblanc
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Publication number: 20090011216Abstract: A method of making a molded resin product includes the steps of (i) providing a plurality of liquid resin components that each include a reaction monomer for a resin, wherein at least one of the liquid resin components includes a catalyst, at least one of the liquid resin components includes an activator, and at least one of the liquid resin components includes thermally expandable microspheres, (ii) mixing the liquid resin components; and (iii) injecting the mixed liquid resin components into a mold at a predetermined temperature. The predetermined temperature is at least 10° C. lower than an expansion start temperature of the thermally expandable microspheres.Type: ApplicationFiled: July 2, 2007Publication date: January 8, 2009Inventors: Youji Suzuki, Takeshi Kato
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Patent number: 7459109Abstract: A method for manufacturing foam pads includes a first step of preparing a proper amount of PVC power, DOP curing agent, light calcium carbonate, kaolin, foaming agent and pigment and pouring them into a blending device to be blended and form a liquid starchy material. Next, the liquid starchy material is conveyed into an intermediate material barrel and kept stationary for pre-foaming at normal temperature for about 8 hours and then coated on a conveyer pelt to form a starchy material layer. Subsequently, the starchy material layer is kept stationary and heated at 80-90° C. for about 3-10 minutes and then continuously heated at 185-200° C. for about 20-30 minutes to form an integral-sheeted foam pad. After cooled, the integral-sheeted foam pad is thermo-compressed and cut into various foam pad products.Type: GrantFiled: September 23, 2005Date of Patent: December 2, 2008Inventor: Wen Shan Lin
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Patent number: 7455798Abstract: A method of preparing a low-density material and precursor for forming a low-density material is provided. An aqueous mixture of inorganic primary component and a blowing agent is formed, the mixture is dried and optionally ground to form an expandable precursor. Such a precursor is then fired with activation of the blowing agent being controlled such that it is activated within a predetermined optimal temperature range. Control of the blowing agent can be accomplished via a variety of means including appropriate distribution throughout the precursor, addition of a control agent into the precursor, or modification of the firing conditions such as oxygen deficient or fuel rich environment, plasma heating etc.Type: GrantFiled: February 25, 2004Date of Patent: November 25, 2008Assignee: James Hardie International Finance B.V.Inventors: Amlan Datta, Hamid Hojaji, Shannon Marie Labernik, David Leslie Melmeth, Thinh Pham, Huagang Zhang
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Patent number: 7452585Abstract: An article of manufacture comprising a sag-resistant nucleus-forming monolithic composite capable of being located within a hollow interior portion of a structural material and being expanded therein. Also, articles of manufacture comprising open-cellular structural material containing within the open-cell or cell thereof, at least one sag-resistant nucleus-forming monolithic composite. The composite is desirably in the shape of a plug that is similar or close to similar to the shape of the hollow interior. In addition, there is described a process that comprises forming a pre-shaped sag-resistant nucleus-forming monolithic composite for use in reinforcing and stiffening a normally open-cellular structural material. Also described is a process for reinforcing or stiffening a normally open-cellular structure, any tubular structure, or any channel structure, by putting at least one sag-resistant nucleus-forming monolithic composite within a hollow interior portion of the structure.Type: GrantFiled: September 2, 2003Date of Patent: November 18, 2008Assignee: Henkel CorporationInventors: Raymond S. Wong, Stanley L. Lehmann, Wei Helen Li
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Patent number: 7446138Abstract: Extruded composite compositions of PVC and wood particles containing chitosan or chitin as a coupling agent are described. The composite compositions have improved physical and mechanical properties.Type: GrantFiled: April 21, 2006Date of Patent: November 4, 2008Assignees: Board of Trustees of Michigan State University, Michigan Technological UniversityInventors: Laurent M. Matuana, Patricia A. Heiden, Bhavesh L. Shah
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Publication number: 20080261016Abstract: Provided are a blow molded article with a surface skin, which allows the formation of a blow molded article having a desired expansion ratio and retains a required expansion ratio from the time of extruding and is free from the generation of a sink mark or a warp in a portion where the surface wall and the back wall thereof has been welded and allows the production of a blow molded article with a lightweight and highly rigid surface skin; and a method for producing the blow molded article. A panel (1) with a surface skin, which is a blow molded article with a surface skin, has a body (5) in the form of a plate having a surface wall (2) and a back wall (3), both comprising a thermoplastic plastic, and a surface skin material (6) which is integrally pasted on the surface wall (2). The body (5) in the form of a plate is in an expanded state and comprises cells having an average particle diameter of 300 ?m or less.Type: ApplicationFiled: October 19, 2005Publication date: October 23, 2008Applicant: KYORAKU CO., LTD.Inventors: Teruo Tamada, Masaaki Onodera
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Publication number: 20080258328Abstract: A process for the production of cylindrical moldings based on cellular polyurethane elastomers having a density, according to DIN EN ISO 1798, of from 350 to 800 kg/m3, a tensile strength, according to DIN EN ISO 1798, of ?2.Type: ApplicationFiled: February 21, 2006Publication date: October 23, 2008Applicant: BASF AktiengesellschaftInventors: Ralf Hansen, Peter Jackisch, Elke Marten
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Publication number: 20080261022Abstract: A polyurethane composite is disclosed comprising rigid polyurethane and foamed thereupon a flexible integral skin (surface pore closed) polyurethane foam, wherein the rigid polyurethane having a density range of 600 kg/m3 to 1200 kg/m3, a Shore A hardness range of 90 to 99, a Shore D hardness range of 40 to 80, a tensile strength range of 10 MPa to 60 MPa, a flexural strength range of 20 MPa to 60 Mpa, a elastic flexural modulus range of 800 MPa to 2500 Mpa, an elongation rate at break of 10-100% and an elongation at break of 25-150%; wherein the flexible integral skin (surface pore closed) polyurethane foam having a density range of 60 kg/m3 to 200 kg/m3, a tensile strength of 60 kPa to 250 kPa, an elongation at break of 70-180%, a tearing strength of 130-220 N/m, a resilience of falling ball of 40-70%, IFD25% of 200-600 N and IFD65% of 600-1800 N.Type: ApplicationFiled: September 26, 2005Publication date: October 23, 2008Inventors: Chenxi Zhang, Jen-Chieh Lin, Chi-Kwong Chow, Xiang Wang
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Patent number: 7435365Abstract: A method of making a hollow foaming member is to utilize the foaming agents with various decomposition speeds or gas issued into the rubber sheet in the die while vulcanization and foaming. As a result, the foaming member made by the method of the present invention has an air cell therein.Type: GrantFiled: March 18, 2005Date of Patent: October 14, 2008Assignee: Shiun Jiug Industrial Co., Ltd.Inventor: Semi Kao
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Publication number: 20080203598Abstract: Method for producing foamed microporous polymer molded bodies by melting a thermoplastic polymer in a first zone of an extrusion device, mixing in a highly volatile blowing agent, conveying the polymer melt containing the blowing agent into a second zone in which dissolution of the blowing agent occurs to saturation of the polymer melt at the foaming temperature, and molding and foaming of the loaded polymer melt to a foamed structure, whereby, in the second zone, a pressure above 90 bar, a blowing agent concentration above the critical minimum concentration for complete foaming, and the foaming temperature, lying above the solidification temperature of the polymer melt saturated with blowing agent, are set such that the polymer molded body obtained has a porosity in the range between 40 and 90 vol. % and an open-cell pore structure with uniform cross-sectional distribution.Type: ApplicationFiled: March 5, 2008Publication date: August 28, 2008Applicant: Membrana GMBHInventors: Frank Wiese, Hartmut Stenzel, Quan Huang, Bernd Seibig, Dieter Paul
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Publication number: 20080197524Abstract: A process for the production of foams by heating with foaming and crosslinking of a mixture comprising a melamine/formaldehyde (MF) precondensate, a curing agent and a blowing agent, a formaldehyde scavenger being added prior to the heating, and foams based on melamine/formaldehyde resins having a low formaldehyde emission and the use thereof for the production of shaped articles by thermoforming.Type: ApplicationFiled: June 12, 2006Publication date: August 21, 2008Inventors: Horst Baumgartl, Jens-Uwe Schierholz
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Patent number: 7390446Abstract: Process for the preparation of foamed supramolecular polymers characterized in that the foaming of the supramolecular polymer is carried out in the presence of blowing agents.Type: GrantFiled: November 24, 2004Date of Patent: June 24, 2008Assignee: Huntsman International LLCInventor: Bruno Dejolier
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Patent number: 7361294Abstract: Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection molding system. Another aspect involves an injection molding system including a nucleator that is upstream of a pressurized mold. Another aspect involves an extrusion system with the reciprocating screw for forming a single phase solution of non-nucleated blowing agent and polymeric material. Another aspect involves very thin walled microcellular material and very thin walled polymeric material. Another aspect provides a method for producing high weight reductions in very thin-walled parts with surfaces that have no noticeable differences from non-foamed parts.Type: GrantFiled: February 2, 2005Date of Patent: April 22, 2008Assignee: Trexel, Inc.Inventors: David E. Pierick, Jere R. Anderson, Sung Woon Cha, Liqin Chen, James F. Stevenson, Dana E. Laing
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Patent number: 7341683Abstract: The present invention solves the problems left unaddressed by the prior known processes by providing a method to produce foamed-thermoplastic films of sufficient strength for use in consumer trash-bag applications utilizing high strength thermoplastic resins. Most broadly, the present invention comprises a blown-film bag formed from a material comprising a matrix of foamed polyolefin-based film and gaseous cells formed from a foaming agent.Type: GrantFiled: January 23, 2003Date of Patent: March 11, 2008Assignee: Vinxi, L.L.C.Inventor: John Charles Marrelli
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Patent number: 7329374Abstract: A method for manufacturing resin films includes steps of mixing PU resin and hydroxyl compound to become a first-kind first-phase mixture, and of mixing a pigment with a foaming agent to become a second-kind mixture, of injecting the first-kind mixture into a kneading device to get mixed and kneaded to become a first-kind second-phase mixture, of sending the first-kind second-phase mixture into a second kneading device to get a first-kind third-phase mixture, and the second-kind mixture and the first-kind third-phase mixture both sent into a conveyer to get a third-kind mixture, and the final step is to send the third-kind mixture into a coating device for coating the third-kind mixture on a substrate cloth to get a resin film of an original color and fresh brilliance.Type: GrantFiled: December 15, 2004Date of Patent: February 12, 2008Inventor: Lung-Wen Chou
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Patent number: 7288196Abstract: An integrated system and method for removing excess nutrients from water, for removing the nutrients from the removal site, for enhancing soil, and for producing pulp and paper products includes bioremediating water to be treated with cultured algae or another suitable plant matter in an attached periphyton bed, harvesting the algae/plant matter to produce a wet algal biomass, and mixing the wet biomass with a shredded fibrous material to produce a pulp. The pulp can be molded into a biodegradable package that can be utilized as a delivery vehicle to a site having nutrient-enrichable soil, where the package can be used as a soil amendment after being used as a delivery vehicle. The pulp can also be made into a paper product that is biodegradable and has the characteristic of enhancing soil quality.Type: GrantFiled: April 8, 2005Date of Patent: October 30, 2007Assignee: Science Applications International CorporationInventors: Kyle R. Jensen, R. Glenn Brosch, Roxanne M. Jensen
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Patent number: 7273571Abstract: A plastic table structure includes a tabletop comprising a thin polymer shell layer surrounding an expanded foam core. The multiple layers of the finished tabletop are molded concurrently in a one-pass biaxial or centrifugal rotational molding process, and cured in an oven. The method includes the steps of introducing polymeric material into a mold, and rotating the mold while heating it to a first temperature so as to form a molten shell of a portion of the polymeric material on the inside of the mold. A foaming agent is introduced within the mold and mixes with a second unmelted portion of the polymeric material and distributes throughout the mold. When the mold reaches a second higher decomposition temperature, the foaming agent causes expansion of the second portion of the polymeric material, forming an expanded foam core inside the shell.Type: GrantFiled: November 24, 2004Date of Patent: September 25, 2007Assignee: MFS, LLCInventors: R. Dru Laws, Kelly Black
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Patent number: 7255819Abstract: Disclosed is a process for producing the baseball or softball for child, for exercise and for toy that has good security characteristics and similar playing characteristics to a conventional game ball. The invention provides the process of manufacturing a game ball wherein products with the same appearance as the conventional baseball can be obtained at a time by injecting, pressing and foaming the material of EVA alone or blend thereof. Thus, the process can decrease a danger of the ball currently used in the Little League greatly and provide a process of producing the game ball for child, exercise and toy that displays the uniform pattern and playing characteristics and has the high productivity.Type: GrantFiled: March 16, 2005Date of Patent: August 14, 2007Inventor: Sung-Yull Lee
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Patent number: 7250124Abstract: The invention is a process for the preparation of article comprising placing a film on each inner surface of each part of a two part mold; placing an article in the mold with film located between the surface of the mold and the article such that there is a small space between the article and the surface of the mold; closing the mold about the article; injecting between the film and the article an expandable plastic material under conditions that the article is coated with the expandable material and the expandable material does not expand; removing the plastic article with the expandable material coated thereon with the two films attached to the expandable plastic material. In another embodiment the invention is an article comprising a shaped plastic article; an expandable material coated in the shaped plastic article; and a film covering the material coated shaped plastic article.Type: GrantFiled: March 5, 2004Date of Patent: July 31, 2007Assignee: Dow Global Technologies Inc.Inventors: Michelle L. Boven, Zhicheng Li, Glenn G. Eagle, Jason C. Brodil
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Patent number: 7250125Abstract: A method of making a foamed rubber member includes the steps of: a) Stirring and pressing the foaming raw material repeatedly, wherein the foaming raw material has rubber, an accelerator, and foaming agent mixed in a predetermined ratio. b) Molding the foaming raw material into a meshed rubber sheet. c) Softening a surface of the meshed rubber sheet. d) Resting an attachment on the surface of the meshed rubber sheet and pressing the attachment. e) Vulcanizing and foaming the meshed rubber sheet to have a foaming member.Type: GrantFiled: March 30, 2005Date of Patent: July 31, 2007Assignee: Shiun Jiug Industrial Co., Ltd.Inventor: Semi Ko
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Patent number: 7220374Abstract: A method for forming energy absorbing components for motor vehicles includes mixing a polymeric resin and blowing agent combination. The combination is heated to liquefy it. A mold for receiving the liquefied combination is cooled. The liquefied combination is injected into the mold in less than 1.5 seconds and preferably in 0.5 seconds or less.Type: GrantFiled: October 20, 2004Date of Patent: May 22, 2007Assignee: Cadillac Products Automotive CompanyInventors: Robert J Zander, Richard Kucejko, Michael P Williams, II
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Patent number: 7183020Abstract: A battery separator of the invention is obtained by press forming a meltblown nonwoven fabric comprising 4-methyl-1-pentene polymer or a 4-methyl-1-pentene/?-olefin copolymer, the battery separator having an average fiber diameter of 0.8 to 5 ?m, a basis weight of 9 to 30 g/m2, a porosity of 30 to 60%, and a load at 5% elongation in the MD direction (longitudinal direction) of not less than 1.2 (kg/5 cm width). A lithium ion secondary battery of the invention includes the battery separator.Type: GrantFiled: August 12, 2005Date of Patent: February 27, 2007Assignees: Mitsui Chemicals, Inc., Denso CorporationInventors: Yasuhiro Sudou, Hironori Suzuki, Satoru Nagami, Kazuo Ikuta, Takahiko Yamamoto, Shun Okijima, Satoru Suzuki, Hiroshi Ueshima
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Patent number: 7160939Abstract: A compound permitting the economic production of packaging containers, which when activated produces concentrated amounts of CO2 gas for extended periods for preservation of perishable products therein, comprises a mixture including a CO2 generating portion incorporated within a polymer matrix. Preferably, the mixture includes citric acid; calcium carbonate, and polyethylene resin. More preferably, the mixture includes a mixture of a carboxylic acid (0.1–40%); a hydrogen carbonate (0.1–40%) and any polyolefin resin. Even more preferably, the mixture includes a mixture including (0.01–40%) Citric Acid; (0.01–40%); and 30–75% polyethylene resin. Most preferably, the mixture includes by weight 12% citric acid; 38% calcium carbonate; and 50% low density polyethylene resin with a melt index of 20 and a density of 0.924 g/cc. Alternatively, the carboxylic acid and hydrogen carbonate components are compounded into separate polymer matrixes, and later combined.Type: GrantFiled: June 29, 2004Date of Patent: January 9, 2007Inventors: Michael J. Finnegan, Wesley L. Boldt