Compacting apparatus of rolled plastic films

Details Compacting apparatus of rolled plastic films Compacting apparatus of rolled plastic films

1988-04-13

1989-02-07

Hornsby, Harvey C.

Presses

With additional treatment of material

Separating materials

100214, 100218, B30B 900

Patent

active

048024082

ABSTRACT:
The apparatus serves to squeeze out air bubbles entrained between layers of rolled plastic films by pneumatically compacting so as to decrease the cloudiness in the appearance of a transparent plastic film roll. The apparatus comprises a base shaft, a tiltable trough to receive and discharge film rolls, and a movable drum which envelopes the film rolls on the trough as engaged with the base shaft with air-tightness. The space containing the film rolls received on the trough are enclosed air-tightly by the drum and base shaft engaged together and pressurized by introducing compressed air to squeeze out air bubbles out of the film rolls and then the drum is disengaged from the base shaft followed by tilting of the trough to discharge the film rolls.

REFERENCES:
patent: 3029723 (1962-04-01), Schweer
patent: 3548739 (1970-12-01), Glasson
patent: 3958392 (1976-05-01), Beninger
patent: 4438690 (1984-03-01), von Allworden
patent: 4509417 (1985-04-01), Brandt et al.

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