LOW DENSITY FOAMED ARTICLES AND METHODS FOR MAKING

摘要

Foamed thermoplastic elastomeric polyurethane and ethylene-vinyl acetate copolymer articles are made with from about 0.1 to about 4 weight percent of supercritical fluid nitrogen based on polymer weight and from about 0.1 to about 5 weight percent of a supercritical fluid carbon dioxide based on polymer weight, with the supercritical fluid nitrogen and the supercritical fluid carbon dioxide being separately added to the molten polymer.