Method of zig-zag folding and apparatus therefor

Details Method of zig-zag folding and apparatus therefor Method of zig-zag folding and apparatus therefor

1974-07-22

1976-03-30

Burr, Edgar S.

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B65H 4520

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039470130

ABSTRACT:
A method of zig-zag folding and apparatus therefor wherein two endless belts are each equipped with tuckers and grippers to engage a web continuously and uniformly advanced toward the point of tucker web engagement, the paths of belt travel in the zone contacting the web to be zig-zag folded being of the order of about 60.degree., and wherein there is a means for providing a controlled surplus of the web spaced upstream of the point of folding, the surplus being released at the time of folding to provide precise position of the folds independent of speed.

REFERENCES:
patent: 2246336 (1941-06-01), Wyrick
patent: 3784188 (1974-01-01), DeLigt

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