Patent ID: 6164953
Filing Date: 2000-12-26
Classification: B29C,Y10S

Abstract:
A mold for use in a plastic molding system to make a plastic article having reduced surface defects, the mold comprising:a first porous mold part;a second porous mold part, the first and second mold parts being movable relative to each other between an open position and a closed position; andat least one of the porous mold parts defining an article-defining cavity in the closed position of the mold, the at least one of the porous mold parts absorbing gases trapped at at least one exterior surface of the plastic article immediately adjacent the at least one of the porous mold parts in the closed position of the at least one of the porous mold parts to degas and form the at least one exterior surface, but preventing the passage of plastic from the article-defining cavity wherein surface defects of the plastic article are reduced and wherein the at least one of the porous mold parts releases the absorbed trapped gases in the open position of the at least one of the porous mold parts.