Method for regulating the contraction of molded parts

Details Method for regulating the contraction of molded parts Method for regulating the contraction of molded parts

2002-03-14

2008-10-07

Huson, Monica A (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling heat transfer with molding material

C264S040100

Reexamination Certificate

active

07431871

ABSTRACT:
A method for regulating the contraction of molded parts in a cavity in a mold of an injection molding machine after completing the filling process of the cavity with molten mass. According to the method, the temperature of the mold is regulated, whereby the temperature and/or the internal pressure in the cavity is monitored and adapted to a reference curve by performing temperature equalization of the mold from the end of the filling phase or from a maximum pressure in the cavity until the end of the injection cycle.

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