Patent ID: 6159409
Filing Date: 2000-12-12
Classification: B29C,F16L,Y10T

Abstract:
A method of molding a plastic grommet, comprising the steps,providing a mold having a bottom part and a first and second top part, each of the parts having a cavity therein,providing pins each having at least a portion in the cavity in the bottom part and engagable with the inner rigid member upon formation of the latter, and also extending to the exterior of the bottom part,fitting the bottom part together with the first top part,injecting first plastic molding material into the cavity thus formed by the bottom part and the first top part, forming an inner rigid member of the article to be molded,moving said pins for so moving the inner rigid member of the article,replacing the first top part by the second top part, andinjecting second plastic molding material in the cavity thus formed by the bottom part and second top part in surrounding relation to the inner rigid member, thus forming an outer soft member which is in mechanical interlock with the inner rigid member, wherein at least a portion of the rigid member is embedded within the article, that portion being surrounded by said second plastic molding material.