发明名称 |
Method of producing a reflector for a headlight, particularly for an automobile, by two-material injection molding |
摘要 |
Method of production of a reflector wall having a core of thermosetting material enclosed in a skin of thermoplastic material, by two-material injection molding. Between a concave mold face having projecting points and a convex mold face, a thermoplastic skin material and a thermosetting core material having a polycondensation temperature greater than the plasto-elasticity temperature of the thermoplastic skin material are successively injected, while holding a temperature intermediate between the two temperatures; the points cause in the skin material interruptions permitting the emergence of the core material to the concave mold face, in localised zones of this in which open vents; the polycondensation of the core material and the hardening of the skin material is successively caused.
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申请公布号 |
US4670199(A) |
申请公布日期 |
1987.06.02 |
申请号 |
US19860842316 |
申请日期 |
1986.03.21 |
申请人 |
CIBIE PROJECTEURS |
发明人 |
MONTET, MAURICE;BACIU, ANTOINE |
分类号 |
B29C45/26;B29C45/16;B29L9/00;B29L11/00;B29L31/30;F21S8/10;F21V7/10;(IPC1-7):B29D11/00 |
主分类号 |
B29C45/26 |
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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