Patent ID: 6550742
Filing Date: 2003-04-22
Classification: B29C,B29K

Abstract:
A mold form for an article comprising:a porous layer of plastic resin having an article-forming surface and a second surface opposite from the article-forming surface, the plastic resin selected from the group consisting of polyureas, polyurea blends, polyurethanes, polyurethane blends, and mixtures thereof; heat transfer tubing positioned adjacent the second surface; a porous mixture of metal pellets and epoxy positioned adjacent to the second surface and between the heat transfer tubing permitting vacuum communication through the porous mixture and layer during vacuum forming of the article to be manufactured; and a second layer selected from the group consisting of polyureas, polyurea blends, polyurethanes, polyurethane blends, and mixtures thereof, wherein said second layer substantially covers the porous mixture.