Cooling and guiding device for thermoplastic synthetic resin fil

Details Cooling and guiding device for thermoplastic synthetic resin fil Cooling and guiding device for thermoplastic synthetic resin fil

1985-05-07

1987-03-17

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

264569, 264237, 4253261, 4253871, B29C 3516, B29C 4790

Patent

active

046504079

ABSTRACT:
A cooling and guiding device for continuous tubular thermoplastic synthetic resin films comprises a support ring, and another ring which is vertically spaced from the support ring, one of the rings being rotatable relative to the other; each of a plurality of flexible conduits has one end connected to the support ring and its other end connected to the other ring, and each has a gas connection to a source of gas under pressure. The rings and conduits form an envelope the minimum diameter of which can be adjusted by relative rotation of the rings to accommodate a tubular film passing through the envelope; and each of the conduits has a series of orifices extending throughout the length of the conduit and arranged to direct gas jets against the exterior of such a tubular film to cool the film and to prevent the film from coming in contact with the envelope.

REFERENCES:
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patent: 4174932 (1979-11-01), Herrington
patent: 4408970 (1983-10-01), Bustin et al.
patent: 4453907 (1984-06-01), Taguchi

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