Process for molding a polymeric layer onto a substrate

Details Process for molding a polymeric layer onto a substrate Process for molding a polymeric layer onto a substrate

1983-11-14

1987-01-20

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264 19, 264 23, 264 24, 264 22, 264511, 264107, 264265, 264279, B29C 3910, B29C 3942

Patent

active

046379045

ABSTRACT:
Process for forming a polymeric layer on a substrate comprises placing a substrate to be coated in a mold having a removable lid, injecting a liquid monomer into the mold and into contact with the surface of the substrate to be coated, holding the substrate in place in said mold prior to curing said monomer, radiation curing the liquid monomer, releasing the hold on said substrate prior to significant shrinkage of the curing liquid monomer, and venting said mold to atmospheric pressure at the portion of the mold remote from the surface of the substrate being coated and prior to significant shrinkage of said liquid monomer whereby the substrate moves toward the removable lid. Thereafter, the substrate, which now has a polymeric layer affixed thereto, is removed from the mold.

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