| 摘要 |
A polypropylene moulding composition containing from 99.5 to 99.999% by weight of a homopolymer or copolymer of propylene having an MFI 230/2.16 of from 2.0 to 25 g/10 min and from 0.01 to 0.5% by weight of a fluorine-containing thermoplastic polymer having a fluorine content of at least 50% and a melting point of below 250@C makes it possible to produce high-quality polypropylene films by the calandering method. The addition of fluoropolymers is not only more effective with respect to the release effect, but also gives significantly less deposits and causes an improved take-off behaviour compared with the use of conventional lubricants. |
