Method to reduce deposits of terephthalic acid on cooling rolls during sheet extrusion of amorphous polyethylene terephthalate

摘要

Physically blending small amounts of polycarbonate resin into polyethylene terephthalate resin which is to be extruded and cooled to form an unoriented amorphous sheet reduces deposits of terephthalic acid on the cooling rolls during sheet extrusion.