Seal for blow down platen

Details Seal for blow down platen Seal for blow down platen

1993-08-11

1995-10-24

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Starting material is nonhollow planar finite length preform...

4253871, B29C 3300, B29C 5110

Patent

active

054607736

ABSTRACT:
A blow down hydroforming apparatus for sheet material incorporates an hydraulically inflatable seal disposed between a platen and a table in circumscribing relationship with a cavity formed in the platen to maintain the pressure of gas in the cavity during forming of the sheet material.

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