Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1979-12-11
1981-12-08
Pavelko, Thomas P.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
264325, 264DIG65, 264338, 425183, 425193, 425195, B29C 104
Patent
active
043047513
ABSTRACT:
A discrete thermoplastic composition is formed into a shaped article in a rapid stamping process. The composition is placed on and preheated with a rigid metal plate which has been preshaped to fit the contour of one of the dies of the stamping press. The heated composition and metal plate are then transferred to the stamping press where the composition is stamped and cooled into a three-dimensional shaped object. The surface of the metal plate contacting the composition has a special finish so that desired surface effects can be produced on the stamped article.
REFERENCES:
patent: 2452761 (1948-11-01), Josionowski
patent: 4082828 (1978-04-01), Zulli
Golden Thomas H.
Li Hsin L.
Allied Corporation
Henry Patrick L.
Negin Richard A.
Pavelko Thomas P.
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