Spiral folder

Details Spiral folder Spiral folder

1998-08-28

2000-01-25

Vo, Peter

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493436, 493454, 493179, 493182, B31B 128

Patent

active

060172983

ABSTRACT:
A machine for folding materials is disclosed in which the portion of the material is engaged and folded by a rotary cam such that the surface of the portion is engaged and not the edges of the portion. In the preferred embodiment, creasing rollers are positioned along the fold line above the rotary cam folders such that the fold is made very accurately.

REFERENCES:
patent: 2896517 (1959-07-01), La Bombarde
patent: 2931277 (1960-04-01), La Bombard
patent: 2986078 (1961-05-01), Hottendorf
patent: 4254692 (1981-03-01), Sardella
patent: 4624653 (1986-11-01), McBride et al.
patent: 5114392 (1992-05-01), McAdam, III et al.
patent: 5230686 (1993-07-01), McAdam, III et al.
patent: 5827162 (1998-10-01), Rubin et al.

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