Quenching of polymeric film

Details Quenching of polymeric film Quenching of polymeric film

1976-04-14

1978-01-31

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 407, 264216, B29D 722

Patent

active

040715892

ABSTRACT:
In the electrostatic pinning of molten polymeric film, especially polyethylene terephthalate film, to a quenching drum, the insulators for those parts of the pinning electrode positioned outside the edges of the film are adjusted to follow the transverse fluctuations which may occur in the film edges so as to prevent sparking between the electrode and the margins of the quenching drum outside the film edges.

REFERENCES:
patent: 3341888 (1967-09-01), Bridge et al.
patent: 3571853 (1971-03-01), Denton et al.
patent: 3758251 (1973-09-01), Gillyns et al.
patent: 3898026 (1975-08-01), Sauer et al.

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