Patent ID: 6294116
Filing Date: 2001-09-25
Classification: B29C,B29K

Abstract:
A method for producing a crosslinked foamed article, comprising the steps of:(a) uniformly mixing at least one crosslinkable resin, at least one crosslinking agent, at least one foaming agent , and at least one additive into a resin composition;(b) extruding, the resin composition through a die into an extrlidate of a predetermined shape;(c) passing the extrudate through to a heating mold; and(d) heating the extrudate in the heating mold to a temperature sufficient to cause crosslinking and foaming of the crosslinkable resin while being driven by a driving device to move in the extruding direction, thereby obtaining a crosslinked foamed article,wherein the crosslinkable resin is driven without the aid of a lubricant throughout the entire method.