Process and apparatus for manufacturing cardboard tubes with inc

Details Process and apparatus for manufacturing cardboard tubes with inc Process and apparatus for manufacturing cardboard tubes with inc

1985-07-03

1987-01-13

Husar, Francis S.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493289, 493308, 493370, 82 55, 82 89, 82 93, F16H 706

Patent

active

046361880

ABSTRACT:
A process and apparatus are provided for manufacturing cardboard tubes with incorporated closure for packing or sending articles or documents and tubes obtained by implementing this process. The process comprises the continuous formation of a cardboard tube on the rotary mandrel of a spiralling machine and cutting the tube into tube elements discharged by the machine. This cut out is provided in the form of a sinusoid with provision of appropriate fold lines. Thus tube elements are obtained, without waste of material, whose ends have two opposite tongues which may be folded back, the adjacent ends of two successive tube elements being offset by 90.degree..

REFERENCES:
patent: 2530319 (1950-11-01), Young
patent: 3302500 (1967-02-01), Hackenberger et al.
patent: 3479931 (1969-11-01), Bishop

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