Device for folding and sealing the head of a folded carton

Details Device for folding and sealing the head of a folded carton Device for folding and sealing the head of a folded carton

1984-06-21

1986-04-15

Spruill, Robert L.

Package making

Closing packages and filled receptacles

By means adapted to engage outturned seam of package cover

1565802, 1565831, B65B 716, B65B 5122

Patent

active

045818738

ABSTRACT:
The invention relates to a device for folding and sealing the head of a folded carton made out of a web or blank of cardboard coated on the inside with a thermoplastic layer. The device has levers or supports that carry the folding and pressure-welding tools and that are powered independently of each other by shafts. The result is a structure that is simple and easy to clean. It also allows satisfactory acceptance or introduction of force for the pressure-welding process. Since the force-introduction impact point and a point of contact between the tools that are to be approached to each other like tongs can be located on an axis of pressure, the shafts that pivot and power the lever and support need to accept no forces and accordingly remain free of stress.

REFERENCES:
patent: 2955643 (1960-10-01), Shapero et al.
patent: 3212413 (1965-10-01), Allen et al.
patent: 3469364 (1969-09-01), Bischoff
patent: 4241560 (1980-12-01), Deimel et al.
patent: 4306400 (1981-12-01), Coleman et al.

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