Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1978-12-29
1980-11-25
Pavelko, Thomas P.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
26432812, 26432816, 425156, 425159, 425543, 425549, B29D 900, B32B 2708
Patent
active
042358337
ABSTRACT:
A method and apparatus for forming a thermoset in-the-mold coating on a hot, cured glass fiber reinforced thermoset resin substrate by (1) separating the mold halves slightly while maintaining a seal with the shear edge, (2) injecting an in-the-mold coating resin in a stream which flows parallel from the injector onto a surface of the substrate, and (3) closing the mold and curing the coating under pressure. The separation and of the mold halves is performed by the conventional mold ram. Preferably the mold surface forming the coated surface of the substrate is roughened.
REFERENCES:
patent: 4076780 (1978-02-01), Ditto
patent: 4076788 (1978-02-01), Ditto
patent: 4081578 (1978-03-01), Van Essen
patent: 4082486 (1978-04-01), Cerano
patent: 4123488 (1978-10-01), Lawson
Modern Plastics, Jun. 1976, pp. 54-56, "Control System Promises To Advance Compression Molding Technology", Wm. H. Todd.
The Mechanics of Molded Coating For Compression Molded Reinforced Plastic Parts, Robert Ongena, 33rd Annual Technical Conference, The Society of the Plastics Industry, Inc., Section 14 B-pp. 1-7.
Arnason Sigurdur I.
Kleese Edward J.
Pavelko Thomas P.
The General Tire & Rubber Company
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