VERFAHREN ZUR HERSTELLUNG VON VERSCHLEISSFESTEM BIEGSAMEN FOLIENMATERIAL

摘要

A wear-resistant flexible sheet material, suitable for use as outer soles on footwear, is produced by pressing reconstituted polyurethane foam sheets in the substantial absence of air at temperatures above 150 DEG C. The sheets should have a density exceeding 15 lb/ft3 and are further densified by the hot pressing. The sheets are preferably pre-heated to 175 DEG -210 DEG C. and pressed under a pressure of 5 to 30 tons/ft2 for periods of up to 5 minutes. The sheets may be embossed or smooth surfaced and may contain pigments, plasticizers and other additives.