Quenching of polymeric film

Details Quenching of polymeric film Quenching of polymeric film

1974-08-19

1976-09-28

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

264 22, 264 407, 4251748E, 425377, B29D 722

Patent

active

039828638

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: 3212461 (1965-10-01), Fritzberg
patent: 3323887 (1967-06-01), Downey
patent: 3341888 (1967-09-01), Bridge et al.
patent: 3758251 (1973-09-01), Gillyns et al.

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