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公开(公告)号：EP2613921A1
公开(公告)日：2013-07-17
申请号：EP11760627.7
申请日：2011-09-09
发明人： DOUGHERTY, JR., Eugene P. , EDGETT, Keith , TURNG, Lih-Sheng , LACEY, Chris , LEE, Jungjoo , GORTON, Patrick J. , SUN, Xiaofei
CPC分类号： B29C44/348 , A61F13/2097 , B29L2031/753 , C08J9/122 , C08J2203/06 , C08J2203/08 , Y02P20/544
摘要： In a method of microcellular injection molding, a polymer and a supercritical fluid are processed. A condition of processing the polymer and/or the supercritical fluid is adjusted to control a weight of a plastic part and/or a surface characteristic of a plastic part produced. In another method of producing a plastic part using microcellular injection molding, a polymer is heated and melted and a supercritical fluid is added thereto. The resulting mix is a single-phase polymer-gas solution comprising the polymer and the supercritical fluid. The polymer and/or the supercritical fluid are adjusted to control the weight of the plastic part and/or a surface characteristic of the plastic part. Once adjusted, the melted polymer with the supercritical fluid is injected into a mold. Upon injecting the melted polymer and supercritical fluid, a pressure drop causes the supercritical fluid to nucleate in the melted polymer, thereby causing nucleation of bubbles.
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2.发明公开MICROCELLULAR INJECTION MOLDING PROCESSES FOR PERSONAL AND CONSUMER CARE PRODUCTS AND PACKAGING 有权MIKROZELLULARSPRITZGIESSVERFAHREN用于化妆品和消费者护理产品
公开(公告)号：EP2393644A2
公开(公告)日：2011-12-14
申请号：EP10703729.3
申请日：2010-01-28
发明人： DOUGHERTY, JR., Eugene P. , EDGETT, Keith , TURNG, Lih-Sheng (Tom) , KRAMSCHUSTER, Adam J. , LEE, Jungjoo , LACEY, Chris , GORTON, Patrick
CPC分类号： B29C44/348 , A61F13/2082 , A61F13/266 , B29L2031/753 , C08J9/122 , C08J2203/08 , Y10T428/268
摘要： A method of injection molding produces a microcellular material. In this method, a polymer is melted and blended with a supercritical fluid to produce a single-phase polymer-gas solution. This solution is injected through a nozzle and into a mold. When injected through the nozzle, gas in the solution (from the supercritical fluid) emerges from the polymer, which then solidifies. In emerging from the solution, the gas causes the nucleation of cells that result in a microcellular structure. A foam material comprises a polymer having a microcellular structure formed by the nucleation of micro-cells. The micro-cells are formed by the dispersing of a supercritical fluid in a liquid solution of the polymer when the polymer is subjected to a pressure drop. A feminine hygiene device is fabricated from a foamed polymer.
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3.发明授权MICROCELLULAR INJECTION MOLDING PROCESSES FOR PERSONAL AND CONSUMER CARE PRODUCTS 有权MIKROZELLULARSPRITZGIESSVERFAHREN用于化妆品和消费者护理产品
公开(公告)号：EP2393644B1
公开(公告)日：2013-12-04
申请号：EP10703729.3
申请日：2010-01-28
发明人： DOUGHERTY, JR., Eugene P. , EDGETT, Keith , TURNG, Lih-Sheng (Tom) , KRAMSCHUSTER, Adam J. , LEE, Jungjoo , LACEY, Chris , GORTON, Patrick
CPC分类号： B29C44/348 , A61F13/2082 , A61F13/266 , B29L2031/753 , C08J9/122 , C08J2203/08 , Y10T428/268
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