PROCESS FOR THE PRODUCTION OF MOLDED ARTICLES BY DEEP-DRAWING PREFABRICATED POLYURETHANE (UREA) PARTS OR BY PRESSING FRAGMENTED POLYURETHANE(UREA) MATERIAL

摘要

The invention is directed to a process for the production of molded articles by deep-drawing a prefabricated polyurethane(urea) part produced from a polyisocyanate polyaddition product having a specific gravity of at least 0.8 g/cm3. The part is placed inside a deep-drawing mold and pressed at a temperature of up to 230.degree.C and a pressure of up to 1,000 bar. After the deep-drawing process, the part is subjected to a dwell time of at least 10 seconds at a temperature of up to 230.degree.C and a pressure of up to 1,000 and is immediately thereafter removed from the mold.