发明名称 |
METHODS FOR MICROCELLULAR INJECTION MOLDING |
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. |
申请公布号 |
EP2613921(A1) |
申请公布日期 |
2013.07.17 |
申请号 |
EP20110760627 |
申请日期 |
2011.09.09 |
申请人 |
PLAYTEX PRODUCTS, LLC |
发明人 |
DOUGHERTY, JR., EUGENE P.;EDGETT, KEITH;TURNG, LIH-SHENG;LACEY, CHRIS;LEE, JUNGJOO;GORTON, PATRICK J.;SUN, XIAOFEI |
分类号 |
B29C44/34;A61F13/20;A61F13/26;C08J9/12 |
主分类号 |
B29C44/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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