Using Liquid To Gas Blowing Agent Patents (Class 264/416)
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Patent number: 9168584Abstract: The invention relates to a method of producing a bubbled metal foam, wherein adjusting the size of the bubbles takes place simultaneously with forming the bubbles by means of oscillations induced by longitudinal waves within the formation region of the bubbles. In this way, a decrease in bubble size which can be effected in an uncontrolled way after said bubbles had been created can be avoided.Type: GrantFiled: December 4, 2009Date of Patent: October 27, 2015Assignee: BAY ZOLTAN ALKALMAZOTT KUTATASI KOZHASZNU NONPROFIT KFT.Inventors: Norbert Babcsán, Sándor Beke, Péter Makk
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Patent number: 8999190Abstract: The invention provides a heat transfer composition comprising R-1234ze (E), R-32 and 1,1,1,2-tetrafluoroethane (R-134a).Type: GrantFiled: December 18, 2012Date of Patent: April 7, 2015Assignee: Mexichem Amanco Holding S.A. de C.V.Inventor: Robert E Low
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METHOD FOR MANUFACTURING PLASTIC DIELECTRIC HAVING HOLES AND PLASTIC DIELECTRIC MANUFACTURED THEREBY
Publication number: 20150025166Abstract: A method for manufacturing a plastic dielectric having a plurality of holes and a plastic dielectric manufactured thereby. The method for manufacturing a plastic dielectric includes the steps of: (a) injecting a plastic material into an airtight container; (b) injecting inert gas into the airtight container at pressure of 5 to 9 MPa; (c) maintaining the temperature inside the airtight container at 20 to 50° C.; (d) leaving the airtight container for a predetermined period till an amount of inert gas dissolved in the plastic material becomes 6% wt or more and drawing the plastic material out of the airtight container; and (e) heating the plastic material at temperature of 40 to 110° C.Type: ApplicationFiled: July 21, 2014Publication date: January 22, 2015Inventors: Sung Woon CHA, Young Ho KIM -
Patent number: 8871011Abstract: A method for manufacturing an electret filter element includes preparing fibers and producing, by a spray device, a spray mist of fluid droplets which include an electrical charge formed by an electric field between detaching fluid droplets and a counter-electrode. The fibers are passed through the spray mist so as to wet the fibers with the fluid droplets. The fibers are laid down to form a fibrous layer.Type: GrantFiled: August 27, 2009Date of Patent: October 28, 2014Assignee: Carl Freudenberg KGInventors: Klaus Veeser, Martin Krause, Toan-Hieu Giang, Jochen Zabold
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Patent number: 8865037Abstract: A method of manufacturing foamed thermoplastic films and trash bags wherein a foaming agent is added to a base thermoplastic resin. The resultant foaming agent/base resin mixture is extruded to form a single-ply foamed thermoplastic film. The film may be formed into bag, such as a trash bag.Type: GrantFiled: March 10, 2008Date of Patent: October 21, 2014Assignee: VINXI, L.L.C.Inventor: John Charles Marrelli
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Patent number: 8858848Abstract: A conductive plastic article (31) is disclosed suited for a housing that offers improved shielding against electromagnetic interference or that offers improved electrostatic discharge properties. The plastic article is made by means of low pressure injection molding. The article (31) comprises at least 0.25 volume percent of electrically conductive additives (38). The article (31) comprises a cellular structure. The cellular structure is created by the use of a blowing or foaming agent. At least 0.25 weight percent of blowing or foaming agent is used in the production of the conductive plastic article (31).Type: GrantFiled: May 26, 2011Date of Patent: October 14, 2014Assignee: NV Bekaert SAInventors: Rik Dewitte, Wim Verbrugge
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Publication number: 20140272379Abstract: A foamed article is made by infusing the article of thermoplastic elastomer with a supercritical fluid, then removing the article from the supercritical fluid and either (i) immersing the article in a heated fluid or (ii) irradiating the article with infrared or microwave radiation.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Inventors: Richard L. Watkins, Hossein Baghdadi, Charles Edwards, Yihua Chang
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Publication number: 20140235739Abstract: In one embodiment, a method for producing a template includes applying a resin to a first template having a first concavo-convex pattern, hardening the resin, releasing the hardened resin from the first template to produce a second template having a second concavo-convex pattern corresponding to the first concavo-convex pattern, and enlarging the second template.Type: ApplicationFiled: August 29, 2013Publication date: August 21, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Seiji MORITA
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Patent number: 8728364Abstract: A foam form sheet material having a first large surface comprising substantially only closed cells and an opposite large surface and an interior comprising substantially only open cells. This material comprises a cross linked olefin thermoplastic polymer or copolymer. The foam is made by mixing the polymer with a blowing agent and a cross linking agent. The mixture is maintained in a two roll mill means for a time sufficient to initiate cross linking and to initiate foaming to form closed cells. The sheet material is then disposed in a second two roll mill means having a nip that is larger than the thickness of the foamed sheet material and maintained under elevated temperature and pressure sufficient to initiate further cross linking and foaming. The fully cross linked cell foam is then compressed to rupture the closed cells that are disposed in the interior to form open cells.Type: GrantFiled: July 9, 2008Date of Patent: May 20, 2014Assignee: Senstat Products & Technologies, Inc.Inventor: Edward Benjaminsen
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Patent number: 8722749Abstract: A method for producing foams, such as sponges, from hydrocolloids is described. A solid or semi-solid gel is formed by dissolving polymeric material in an aqueous solvent. The gel formed is allowed to set, and may optionally then be cut into the desired shape. The gel may be frozen to allow formation of ice crystals to act as porogens. Subsequently, the gel is exposed to a radiant energy field for drying under vacuum. This causes the solvent to boil and the foam or sponge is formed. Medicinally active ingredients may be included in the process, so that the sponge or foam formed contains the active ingredient dispersed within the structure. The method described provides an alternative to the conventional methods of particulate leaching or freeze drying.Type: GrantFiled: July 29, 2005Date of Patent: May 13, 2014Assignee: Enwave CorporationInventors: Timothy D. Durance, Jaya Sundaram, Mareike Ressing
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Patent number: 8623263Abstract: A process for curing a porous muffler preform defined by a plurality of glass fibers and a heat-curing thermoset or thermoplastic materials applied to the plurality of glass fibers is disclosed herein. The process includes the step of enclosing the muffler preform in a chamber. The process also includes the step of surrounding the muffler preform with steam. The process also includes the step of causing steam to enter the muffler preform from multiple directions.Type: GrantFiled: September 21, 2009Date of Patent: January 7, 2014Assignee: OCV Intellectual Capital, LLCInventors: Norman T. Huff, Janakikodandaram Karra
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Patent number: 8333901Abstract: The invention provides a heat transfer composition comprising R-1234ze(E), R-32 and 1,1,1,2-tetrafluoroethane (R-134a).Type: GrantFiled: February 16, 2011Date of Patent: December 18, 2012Assignee: Mexichem Amanco Holding S.A. de C.V.Inventor: Robert E. Low
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Patent number: 7597818Abstract: Mixtures of tetrafluoropropenes with bromofluoropropenes provide compositions that have boiling points within an acceptable range, have good chemical stability, low GWP and are essentially non-flammable.Type: GrantFiled: February 27, 2007Date of Patent: October 6, 2009Assignee: Honeywell International Inc.Inventors: Rajiv R Singh, David P Wilson, Ian Shankland, Hang T Pham
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Publication number: 20090169821Abstract: A molded product includes a matrix formed of a polymer material and a plurality of capsules dispersed in the matrix. An unevenness is formed on a surface due to expansion of the capsules. Some of the capsules have expanded without bursting and include an exposed outer shell portion that protrudes from a surface, and/or some of the capsules have burst and include an outer shell protruding portion that protrudes outward from the surface. Finish processing is performed, which eliminates the outer shell protruding portions and/or the exposed outer shell portions from the surface. This results in a molded product in which a color difference due to frequency of contacting an object, etc.Type: ApplicationFiled: December 23, 2008Publication date: July 2, 2009Applicant: TOKAI KOGYO COMPANY LIMITEDInventors: Yasuyuki Takeuchi, Keiji Hiroe, Hideki Iwamoto
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Patent number: 7026044Abstract: An open-celled, inorganic foam based on an aluminosilicate and having a density of less than 25 g/l can be prepared by reacting and foaming an alkali metal silicate solution with an alkali metal aluminate solution in the presence of a volatile blowing agent and an emulsifier.Type: GrantFiled: August 10, 2002Date of Patent: April 11, 2006Assignee: BASF AktiengesellschaftInventors: Frank Braun, Horst Baumgartl
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Publication number: 20030049478Abstract: The present invention relates to film-forming compositions containing ethylene vinyl acetate copolymers with a vinyl acetate percentage that causes film-forming problems and processability problems and an alkylene bisoleamide which is used to enhance the film forming capabilities of these high VA content resins. The invention also relates to films prepared from these compositions and to coating compositions.Type: ApplicationFiled: October 4, 2002Publication date: March 13, 2003Inventors: Randall Allen Vogel, George L.K. Hoh, Alok Shekhar
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Patent number: 6136255Abstract: A voltage is applied to a feeder plate (29) from a power source section (2) including an alternating power source for dielectric heating, whereby an electric field in a direction crossing a direction in which a mold (8) is moved is applied to an incoming plate (28) which is not in contact with the feeder plate (29), so that molded object materials (9) are heated and expanded. By doing so, arc discharge caused by contact of the mold with an electrode is prevented from occurring during the heating and molding of a biodegradable molded object by dielectric heating.Type: GrantFiled: August 29, 1998Date of Patent: October 24, 2000Assignee: Nissei Kabushiki KaishaInventors: Sadamasa Ando, Taizo Karasawa, Toshitaka Haruta, Akio Ozasa, Takayuki Kurisaka, Tsutomu Oowada, Shinji Tanaka
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Patent number: 5965080Abstract: Using a metal mold (8) having an insulating section provided with vapor release sections, pressure outside the metal mold (8) is reduced, and heating is performed while releasing vapor produced thereby through the vapor release sections. This can prevent insulation breakdown caused by condensation of large amounts of vapor produced by materials during molding and heating of starch-based biodegradable molded objects by means of resistance heating, dielectric heating, etc.Type: GrantFiled: August 3, 1998Date of Patent: October 12, 1999Assignee: Nissei Kabushiki KaishaInventors: Sadamasa Ando, Taizo Karasawa, Toshitaka Haruta, Akio Ozasa, Takayuki Kurisaka, Tsutomu Oowada, Shinji Tanaka