Process for producing thermoformable polypropylene films and sheets.

摘要

The process comprises the steps of providing a polypropylene film or sheet, the film or sheet produced from a resin selected from the group of homopolymers and copolymers of propylene and mixtures thereof and stretching the film or sheet in at least one direction to obtain a partial orientation of a degree effective to minimize sag during thermoforming. A process for thermoforming polypropylene is also provided.