Process for producing polyester film containing a slip agent

Details Process for producing polyester film containing a slip agent Process for producing polyester film containing a slip agent

1988-07-13

1990-05-01

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

To form particulate product

2642106, 264211, 2642356, 2642358, 524263, 524266, 524267, 525474, B29C 4700, B29C 5504, B29C 5512, C08G 7704

Patent

active

049216708

ABSTRACT:
A process is described for the production of an oriented, heat-set polyester film including an admixture of polydiorganosiloxane in the amount of 0.001 to 2% by weight, as well as further additives, such as inert inorganic and/or organic particles. The thermoplastic material is melted in an extruder and extruded through an appropriate die to give a cast film, is then quenched, reheated, stretch oriented, and heat set. The characteristic criteria is the addition of the polydiorganosiloxane to the polydiorganosiloxane-free polyester in the form of a masterbatch.

REFERENCES:
patent: 4348510 (1982-09-01), Keck et al.
patent: 4446090 (1984-05-01), Lovgren et al.
patent: 4452962 (1984-06-01), Ginnings et al.
patent: 4472556 (1984-09-01), Lipowitz et al.
patent: 4496704 (1985-01-01), Ginnings
patent: 4758396 (1988-07-01), Crass et al.
patent: 4798759 (1989-01-01), Dallman et al.

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