Apparatus for making chains of sacks

Details Apparatus for making chains of sacks Apparatus for making chains of sacks

1977-12-14

1979-11-27

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With cutting, punching, piercing, severing, or tearing

1565835, B32B 3100, B30B 1534

Patent

active

041760000

ABSTRACT:
In welding apparatus for two layers of travelling plastics film, a plurality of welding tools is moved in pairs along an elongated welding station through which the film layers are passed. The welding tools located on both sides of the layers co-operate with one another and are mounted in tool holders carried by endless chains. The tool holders on one side of the film layers are constructed so that they can be temporarily uncoupled from the associated chain and instead coupled to the respective tool holders on the other side of the layers.

REFERENCES:
patent: 2984288 (1961-05-01), Gaubert
patent: 3122467 (1964-02-01), Hannon
patent: 3140218 (1964-07-01), Hannon
patent: 3300365 (1967-01-01), Roos

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