Process for the production of polycarbonate injection-...

Details Process for the production of polycarbonate injection-... Process for the production of polycarbonate injection-...

B - Operations, Transporting

29

B

18/715

B29B 9/06 (2006.01) B29B 9/12 (2006.01) B29C 45/00 (2006.01)

Patent

CA 1247314

Process for the production of polycarbonate injection-moulded shaped articles A b s t r a c t The present invention relates to a process for the production of thermoplastic polycarbonate injection- molded shaped articles from polycarbonate melt strands, which is characterised in that polycarbonate melt strands are pressed through a circular orifice with a diameter of 1 to 8 mm, preferably 2 to 6 mm, and are then cooled to below their softening point, stretched in a ratio of between 1:1.5 and 1:8, preferably between 1:1.5 and 1:5, between room temperature and the softening point of the resulting polycarbonate strand, and are then granulated, and the resulting polycarbonate granules are processed in a known manner by the injection-moulding process at pro- duct temperatures of below 320°C, preferably below 300°C.

482253

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