Manufacture of plastic products

Details Manufacture of plastic products Manufacture of plastic products

1985-06-11

1990-09-18

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling heat transfer with molding material

264 41, 264126, 2642976, 2642977, 425407, B29C 4352, B29C 4358

Patent

active

049576712

ABSTRACT:
A method for manufacturing plastic products from moldable plastic materials, involving the efficient use of a press and a mold is disclosed. The method includes heating the press and the mold to a temperature above the melt temperature of the plastic material, with the mold then being removed from contact with the press and with the press being applied to a replicate mold. The press is utilized so as not to apply pressure to the plastic material and the mold is preferably formed of a light weight material having high heat conductivity.

REFERENCES:
patent: 3542702 (1970-11-01), Okada et al.
patent: 3576929 (1971-04-01), Turner et al.
patent: 3642970 (1972-02-01), Hagitani et al.
patent: 4332847 (1982-06-01), Rowland
patent: 4344142 (1982-08-01), Diehr, II et al.
patent: 4434116 (1984-02-01), Covitch
patent: 4490321 (1984-12-01), Klinkaii
patent: 4551807 (1985-11-01), Hsich et al.

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