Tension frame for releasable clamping of a film

Details Tension frame for releasable clamping of a film Tension frame for releasable clamping of a film

1987-06-23

1988-10-18

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Including shaping means comprising fluid pressure contacting...

264553, 269170, 269171, 269237, 425DIG48, B29C 5120, B29C 5520

Patent

active

047783753

ABSTRACT:
In the production of shaped plastic elements using deep-drawable thermoplastic film, a tension frame is required to clamp the film. The tension frame is formed by lengthwise and transverse frame parts, on the outside edges of which is located one angle clamp on each. The angle clamps can be actuated by means of closure levers into a releasable clamping position, in which the clamp arms of the angle clamp press with force against bottom fixing members of the frame parts.

REFERENCES:
patent: 3416194 (1968-12-01), Miller
patent: 3600746 (1971-08-01), Kostur et al.
patent: 4018551 (1977-04-01), Shuman
patent: 4097035 (1978-06-01), Shuman
patent: 4170449 (1979-10-01), Shuman
patent: 4438054 (1984-03-01), Holden

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