Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Flash or sprue removal type
Patent
1993-08-27
1995-07-11
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Flash or sprue removal type
264262, 264266, 425112, 425123, 425DIG47, B29C 3702, B29C 4318
Patent
active
054318726
ABSTRACT:
Compression molding of elastomer to form an annular sealing lip bonded to a sintered polytetrafluoroethylene line over the lip, and to bond the elastomer to an annular metal case for the seal. The mold elements, anchoring the inner margin of the liner preform during molding, slide against each other for concentric alignment, bend the metal case to control back pressure on the elastomer being applied to the liner, and form a thin annular link of elastomer between the seal formed in the mold and the excess elastomer to be trimmed from the seal.
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Brenco Incorporated
Davis Robert B.
Glenn John F. C.
Woo Jay H.
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