Bag-folding apparatus

Details Bag-folding apparatus Bag-folding apparatus

1996-12-19

2000-09-05

Kim, Eugene

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493234, 493231, 493243, 493257, B31F 130

Patent

active

061135267

ABSTRACT:
A folding apparatus of a bag-making machine includes a plurality of folding mechanisms each having a pair of nip rollers which receive a sheet or bag from an associated carrier structure, to thereby sequentially form transverse folds in each sheet or bag. In order to abate lamination-like adhesion of relatively thin, light gauge film materials to the belts and other surfaces of the folding apparatus, the belts and/or guide rollers of the apparatus are preferably provided with grooved sheet-contacting surfaces. The apparatus is additionally configured to abate wrinkling or buckling of a leading edge portion of each sheet or bag which can occur attendant to its reversal in direction of movement as it is directed between the nip rollers of each folding mechanism. High-speed operation is facilitated while avoiding improperly folded bags, or equipment jamming.

REFERENCES:
patent: 4498894 (1985-02-01), Kuckhermann
patent: 4614512 (1986-09-01), Capdeboscq
patent: 5388746 (1995-02-01), Hatchell et al.
patent: 5399228 (1995-03-01), Schroeder et al.

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