Injection molding method

Details Injection molding method Injection molding method

1996-04-15

1997-12-09

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

249136, 249140, 264336, 264342R, 425577, 425DIG58, B29C 4537, B29C 4544

Patent

active

056957068

ABSTRACT:
A molded container top 140 has engravings 145 formed by an embossing 108. The core 120 withdrawn from the cavity 102 and a retaining ring 110 holds the hot molded part 140 in the cavity 102. The molded part 140 shrinks away from the cavity 102 and is pushed out of the cavity 102 by an ejector 105. The part 140 has no witness lines on its circumferential skirt 142.

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