Process for manufacturing thermoplastic resin moldings

Details Process for manufacturing thermoplastic resin moldings Process for manufacturing thermoplastic resin moldings

1995-09-01

2000-02-29

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264259, 2643287, 2643288, B29C 4304, B29C 4320, B29C 4504, B29C 7046

Patent

active

060305738

ABSTRACT:
A process for manufacturing thermoplastic resin moldings in a short molding cycle but with good appearance, nearly free from resin and deformation, and free from weld lines on the surface. The process uses a mold assembly which includes a pair of male and female molds, either of which has two or more freely opening and closing resin feeding gates open to the cavity surface. Also, there is a mechanism for controlling the quantity of resin to be fed from each gate and the timing of the initiation of resin feeding.

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