Patent ID: 6299814
Filing Date: 2001-10-09
Classification: B29C

Abstract:
A method of fabricating a silicon rubber-based mold, the method comprising the steps of:making a master model of products to be formed, and a jig;mounting the master model onto the jig, forming a lower pad on the master model, and inserting a plurality of round bars onto the lower pad;making a lower frame by injecting a backing material onto the lower pad;removing the lower pad and the round bars while leaving an empty space and silicon injection paths there, injecting silicon rubber into the empty space via the silicon injection paths to form a lower silicon layer, thereby completing a lower half mold;overturning the lower half mold, separating the jig from the master model, forming an upper pad on the master model, and inserting a plurality of round bars onto the upper pad;making an upper frame by injecting a backing material onto the upper pad; andremoving the upper pad and the round bars while leaving an empty space and silicon injection paths there, injecting silicon rubber into the empty space to form an upper silicon layer, thereby completing an upper half mold.