Vinyl chloride polymer film and method for producing same

摘要

The invention relates to a film made of a vinyl chloride polymer mixture that, in addition to the conventional additives, contains 0.1 to less than 5 wt % of a semicrystalline or amorphous polyester, has a good thermal formability, and is suitable for the packaging of bulk goods. The film is produced by extruding or by calendering the plastified vinyl chloride polymer mixture, optionally followed by inline/offline stretching and, optionally, thermally formed immediately thereafter.

主权项

1. A thermoformable and/or shrinkable film comprising a vinyl chloride polymer mixture, said vinyl chloride polymer mixture comprising from 70 to 97% by weight of one or more vinyl chloride polymers with K values from 50 to 90; from 2 to 25% by weight of additives selected from modifiers, high-molecular-weight polymers, stabilizers, waxes antiblocking agents, colorants, plasticizers, or processing aids, and an amount of from 0.1 to less than 5% by weight of a semicrystalline or amorphous polyester with a crystallization halflife time in the molten state of at least 5 minutes, where the proportions by weight are based on the total weight of the vinyl chloride polymer mixture.