Apparatus for placing a web of film under tension

Details Apparatus for placing a web of film under tension Apparatus for placing a web of film under tension

1987-07-24

1989-05-16

Sipos, John

Package making

Methods

Enclosing contents within progressively formed web means

53551, 53373, 26 83, 226 17, 226187, B65B 920

Patent

active

048297461

ABSTRACT:
An apparatus for placing a folded web of film under tension comprising at least one pair of rollers, a first side of the folded web of film being fed between the pair of rollers, the pair of rollers being mounted out of parallel to the first side of the folded web of film and pulling the first side of the folded web of film in a first direction, and a member for preventing a second side of the folded web of film from moving in the first direction. Preferably, the member biases the second side of the folded web of film in a second direction opposite the first direction. A method for placing a folded web of film under tension is also provided.

REFERENCES:
patent: 3149447 (1964-09-01), Dorr
patent: 3335540 (1967-08-01), Reil
patent: 3470672 (1969-10-01), Tuma
patent: 3613524 (1971-10-01), Behr
patent: 3681892 (1972-08-01), Safranski
patent: 3752377 (1973-08-01), Knapp
patent: 3886714 (1975-06-01), de la Poype
patent: 3975888 (1976-08-01), Jones
patent: 4004399 (1977-01-01), Borrello
patent: 4043098 (1977-08-01), Putnam, Jr.
patent: 4103473 (1978-08-01), Bast
patent: 4235362 (1980-11-01), Hubenko
patent: 4534159 (1935-08-01), Kelly
patent: 4589247 (1986-05-01), Tsuruta

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