B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1180
B29C 51/10 (2006.01) B29C 43/00 (2006.01) B29C 43/02 (2006.01) B29C 51/00 (2006.01) B29C 51/04 (2006.01) B29C 67/24 (2006.01)
Patent
CA 2028238
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°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°C and a pressure of up to 1,000 and is immediately thereafter removed from the mold.
Elsner Thomas
Faehndrich Jurgen
Jurgens Eberhard
Rasshofer Werner
Wagner Joachim
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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