Compacting apparatus of rolled plastic films

• Main Authors: KANEKO; KATSUAKI, OKAZAKI; YOSHITAKE, HIRABAYASHI; AKIO
• Format: Patent
• Language: English
• Published: 07.02.1989
• Edition: 4
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; PACKING; PERFORMING OPERATIONS; PRESSES; PRESSES IN GENERAL; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STORING; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

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.