发明名称 METHOD FOR OVERMOLDING SINK MARKS FOR AN AUTOMOTIVE COMPONENT
摘要 A method, molding device and vehicle component (10) provide for minimized si nk marks (30) caused by structural ribs (28) in the molding process. Molten material is injected into a first mold cavity to form a primary vehicle component part (20) having structural ribs (28) on a back side. Typically, sink marks (30) may develop at a front surface of the primary vehicle component part (20), located opposite to the structural ribs (28) on the bac k side. Molten material is injected into a second molding cavity that is arranged to overmold the front surface (26) of the primary vehicle component part (20) and to cover sink marks (30), if any, in the front surface (26). I n this manner, a vehicle component (10) is manufactured with structural ribs (28) and without visible sink marks (30).
申请公布号 CA2328626(A1) 申请公布日期 1999.10.21
申请号 CA19992328626 申请日期 1999.04.12
申请人 CONIX CORPORATION 发明人 PORTER, MARSHALL RAY
分类号 B29C45/00;B29C45/16;B60R13/02;B60R19/18;B60R21/04;(IPC1-7):B29C33/42;B60R13/00;B28B7/02 主分类号 B29C45/00
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