Patent ID: 6569365
Filing Date: 2003-05-27
Classification: B29C,C08G

Abstract:
A process for molding a semi-rigid integral skin foam used for a covering for a steering wheel of a motor vehicle and having a low foamed integral skin layer and a highly foamed core, comprising the steps of:evacuating a mold cavity to 400 Torr or below; injecting into said mold cavity a polyurethane formulation comprising a polyol component, an isocyanate component, at least one substance selected from the group consisting of an amine salt of formic acid and an amine salt of boric acid; and foaming said polyurethane formulation to fill said cavity by reacting said isocyanate with said amine salt to produce CO2 bubbles and thereby form a highly foamed core having a density of not more than 0.6 g/cm3 composed of fine cells, and said low foamed integral skin layer; wherein said formulation excludes freon.