Material volume compensation assembly for a mold tool

Details Material volume compensation assembly for a mold tool Material volume compensation assembly for a mold tool

2006-08-22

2006-08-22

Colaianni, Michael P. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C264S040500

Reexamination Certificate

active

07094376

ABSTRACT:
A carrier assembly controls movement of a movable member within a mold tool to first receive a quantity of molten material, and then displace that molten material back into a mold cavity during solidification of a molded article. The moveable member moves relative to the surface of the mold cavity to compensate for local volume changes in a molded part that occur during solidification to substantially eliminate depressions and sink marks on an outer surface of a plastic injection molded part.

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