Apparatus for making cup of surface protected paperboard

Details Apparatus for making cup of surface protected paperboard Apparatus for making cup of surface protected paperboard

1982-09-21

1984-06-05

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493133, 493155, 493296, B31C 706

Patent

active

044525966

ABSTRACT:
A paper cup of surface-protected paperboard and an apparatus for making the same, with the paper cup including a wound cup wall and a cup bottom inserted therein. Ends of a wall blank forming the cup wall are overlapped after a winding of the wall blank, and an inner cutting edge is covered by a protective strip welded together with the cup wall. The protective strip is fashioned as a sealing strip in flat contact with the inner surface of the cup wall and is welded to the cup wall on both sides of the overlapping point. The apparatus includes a winding station wherein the wall blank is wrapped onto a winding mandrel and is welded together at the overlapping zone in a subsequent welding station. With further devices being provided for inserting a cup bottom in the thus manufactured cup wall. A positioning device for the sealing strip is associated with the winding mandrel with the positioning device lying in front or preceding the winding station.

REFERENCES:
patent: 1439606 (1922-12-01), Coates
patent: 2275157 (1942-03-01), Morgan
patent: 3439590 (1969-04-01), Rosenberg et al.
patent: 3505933 (1970-04-01), Schmidt
patent: 3979048 (1976-09-01), Stark et al.
patent: 4187768 (1980-02-01), Suzuki

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