Production of polyethylene terephthalate film having improved re

Details Production of polyethylene terephthalate film having improved re Production of polyethylene terephthalate film having improved re

1974-06-18

1976-09-14

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Reshaping running or indefinite-length work

264235, 264291, 264346, B29D 724

Patent

active

039807487

ABSTRACT:
A process for the production of a polyethylene terephthalate film characterized by carrying out heat setting after biaxial elongation so that the heat set temperature and heat set time may satisfy the following relations:

REFERENCES:
patent: 3595836 (1971-07-01), Korneli
patent: 3669931 (1972-06-01), Annis et al.

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