Apparatus for making bags from synthetic plastic film

Details Apparatus for making bags from synthetic plastic film Apparatus for making bags from synthetic plastic film

1974-12-06

1976-03-30

Coan, James F.

Plastic article or earthenware shaping or treating: apparatus

Diverse distinct type shaping means

Shaping orifice and either a downstream preform reshaping...

93 33H, 93 8R, 93 34, 156515, 93 35R, B31B 2114

Patent

active

039471985

ABSTRACT:
A bag-making machine including a longitudinally slotted roller and feed means for feeding plastic film onto the roller. A synchronised cutter sealing member is displaceable cyclically to cause it to enter a slot of the roller to cut and seal the film. Mating formations on the cutter sealing member and roller are engageable at the start of each cycle and moveable arcuately in unison before disengaging. This engagement ensures accurate registration of the cutter sealing member with a slot during simultaneous arcuate movement thereof.
An inline bag-making installation including the bag-making machine.
A bag-making method which includes feeding plastic film over a longitudinally slotted roller and moving a synchronised cutter sealing member cyclically to engage the roller cyclically in registration with a slot thereon, and to move arcuately in unison therewith while sealing and cutting the film.

REFERENCES:
patent: 2206965 (1940-07-01), Lakso
patent: 3054441 (1962-09-01), Gex et al.
patent: 3224161 (1965-12-01), Conti
patent: 3286005 (1966-11-01), Cook
patent: 3474712 (1969-10-01), Pino et al.
patent: 3522689 (1970-08-01), Wylie et al.
patent: 3663338 (1972-05-01), Wech
patent: 3804571 (1974-04-01), Upmeier

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