04885121 is referenced by 50 patents and cites 5 patents.

A continuous method of making a dual durometer self-locking, self-sealing plug for filling and sealing holes in panels. The plug is made from two different, chemically compatible thermoplastic materials by coinjection of the two molten components sequentially into a mold and cooling them concurrently to form the unitary plug.

Title
Method of making a dual durometer self-locking and sealing plug
Application Number
80850
Publication Number
4885121
Application Date
June 22, 1988
Publication Date
December 5, 1989
Inventor
Praful J Patel
Livonia
MI, US
Agent
Neal A Waldrop
Assignee
Chemcast Corporation
MI, US
IPC
B32B 27/08
B29C 45/16
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