Plastic castings molds

Details Plastic castings molds Plastic castings molds

2004-09-14

2010-12-07

Vargot, Mathieu D. (Department: 1791)

Static molds

Container-type molding device

Of named component

C264S001380, C264S002500, C425S808000

Reexamination Certificate

active

07845615

ABSTRACT:
The invention is concerned with the problem that with known plastic casting moulds, especially those of polypropylene, the lenses produced with these moulds have a slippery surface. The invention solves this problem through the use of polymers which are notable for their very low oxygen permeability.

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