Mold for press molding and process for press molding of thermopl

Details Mold for press molding and process for press molding of thermopl Mold for press molding and process for press molding of thermopl

1992-12-24

1994-08-09

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

2643288, 26432811, 425562, 425574, B29C 4528, B29C 4538

Patent

active

053364635

ABSTRACT:
Press molding is carried out by using a mold having a nozzle which opens and closes a molten resin passage provided in an upper half or a lower half and which is located 10-100 mm below a mold cavity side surface of the half, by supplying a thermoplastic resin to a cavity between the respective upper half and the lower half which is not closed and by clamping the mold. Thus, a molded article having a good appearance can be produced even when a molding cycle is short.

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