Process of cooling a heated polyethylene terephthalate film

Details Process of cooling a heated polyethylene terephthalate film Process of cooling a heated polyethylene terephthalate film

1990-06-11

1991-07-02

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

264557, 264562, 2642896, C08F 600

Patent

active

050286919

ABSTRACT:
A process of cooling a heated polyethylene terephthalate film by applying cooling liquid to both surfaces of the heated film and, after the temperature of the film has decreased sufficiently, removing the cooling liquid from the film, wherein the cooling liquid has a pH value between 6 and 3.

REFERENCES:
patent: 4293508 (1981-10-01), Heirbaut et al.

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