Patent ID: 7717982
Filing Date: 2010-05-18
Classification: B01D,B29B,B29C,B29D,B29K,B29L

Abstract:
1. A method of fabricating a plastic article, the method comprising: a) providing a feed of liquid monomer to a modular degasser operating under vacuum, said degasser having a plurality of packing elements stacked together, each of said packing elements comprising: a body module having a bottom surface with at least one hole therethrough and an upwardly directed sidewall peripheral to said bottom surface and adapted for stacking with another body module, said bottom surface and said upwardly directed sidewall defining a chamber; and a puck having a top portion onto which said liquid monomer flows forming a thin film, and a side member, said side member extending downwardly from said top portion to removably set said puck within said chamber, said side member defining at least one side opening; b) flowing said liquid monomer from said top portion into said chamber and over said bottom surface and through said at least one hole; c) passing said liquid monomer through said at least one hole; d) providing the liquid monomer onto the top portion of the packing element under the at least one hole, said liquid monomer being degassed as it flows through said packing elements; e) collecting degassed liquid monomer feed from said plurality of packing elements; f) dispensing said collected degassed liquid monomer into a mold part; and curing the liquid monomer in the mold part; wherein the bottom surface of said packing element has a plurality of holes therethrough and wherein said plurality of holes each pass through said bottom surface at an inclined angle.