Patent ID: 7708858
Filing Date: 2010-05-04
Classification: B29C,B32B,C08G

Abstract:
1. A method of producing a model or tool comprising: (a) building a stack assembly of substrates adhered with several intermediate layers of adhesive paste; (b) machining the assembly of substrates; (c) covering the outer surface of the assembly of substrates with a continuous layer of curable paste machine dispensed, wherein the composition of the curable paste is the same as the composition of at least one of the adhesive paste layers of step (a) and wherein the curable paste is formed by machine mixing at least (d) curing the curable paste and adhesive paste at room temperature; (e) machining to the final structure of the model or tool according to a computer design; and (f) post-curing the curable paste and adhesive paste at temperature of at least 130° C. to yield a heat deflection temperature over 140° C.