Web creaser

Details Web creaser Web creaser

1995-05-23

1995-11-14

Sipos, John

Package making

Progressively seamed cover web or web folds

With closing of web between package units

53451, B65B 900, B65B 906

Patent

active

054655587

ABSTRACT:
A method and apparatus for forming one or more longitudinal creases in a web of material. The web is formed into a tube in a vertical form, fill and seal apparatus, and then passed over an internal guide. A pair of pinch rolls are located adjacent the guide, and a portion of the web is directed between the pinch rolls to crease the film as it is advanced. Direction of the film between the pinch rolls is accomplished by a pair of protrusions extending from the internal guide on opposite sides of the pinch rolls. The thus-creased tube is then passed over opposite, spaced forming plates at the bottom of the guide and then tucked and sealed.

REFERENCES:
patent: 2248471 (1941-07-01), Stroop
patent: 3149447 (1964-09-01), Dorr
patent: 4117649 (1978-10-01), Egli
patent: 4120323 (1978-10-01), Saul
patent: 4260446 (1981-04-01), Saul
patent: 4330351 (1982-05-01), Lo Maglio
patent: 4442656 (1984-04-01), Wylie, Sr.
patent: 4727709 (1988-03-01), Zieke et al.
patent: 4829745 (1989-05-01), Behr et al.

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