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

1974-12-13

1976-05-04

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 34, 93 8R, B31B 116, B31B 2100

Patent

active

039543714

ABSTRACT:
A bag-making machine which comprises a rotatable roller and feed means for feeding a continuous plastic web onto the roller at the rate of rotation of the roller. The machine has a cutter sealing member disposed transverse to the feed direction of the web, and a link lever system for reciprocating the cutter sealing member during working and return strokes thereof, to displace the cutter sealing member both arcuately and radially relative to the roller. The machine includes cam tracks at opposite ends of the roller and displacing means therefor synchronised with the link lever system, the cutter sealing member having cam followers co-operating with the cam tracks.
An inline bag-making installation including the bagmaking machine, draw rollers upstream of the machine, a printer upstream of the draw rollers, and drive means interconnecting the roller of the bag-making machine and rollers of the printer for synchronous operation.

REFERENCES:
patent: 2206965 (1940-07-01), Lakso
patent: 2698046 (1954-12-01), Finke
patent: 2944469 (1960-07-01), Heinzer
patent: 3054441 (1962-09-01), Gex et al.
patent: 3224161 (1965-12-01), Conti
patent: 3286005 (1966-11-01), Cook
patent: 3499817 (1970-03-01), Havens et al.
patent: 3804571 (1974-04-01), Upmeier

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