Method and apparatus for making reclosable bags in a form, fill

Details Method and apparatus for making reclosable bags in a form, fill Method and apparatus for making reclosable bags in a form, fill

1986-12-22

1987-12-01

Spruill, Robert L.

Package making

Methods

Enclosing contents within progressively formed web means

53552, 53373, B65B 900

Patent

active

047095334

ABSTRACT:
A method and apparatus for forming a vertical tubular form fill package feeding the film vertically downwardly over a spout, pressing the outer lateral edges of the film together between pressure rollers, feeding joined strips of plastic zipper consisting of interlocking elements and attaching webs between the outer edges of the film and the spout, positioning guide bars on either side of the zipper between the zipper webs and sealing bars outwardly of the guide bars with the sealing bars simultaneously forming a fin seal at the outer edge and joining the zipper webs to the inner surfaces of the film between the fin seal and the spout and thereafter cross-cutting and sealing to form packages enclosing contents dropped through the spout.

REFERENCES:
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patent: 3172443 (1965-03-01), Ausnit
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patent: 3780781 (1973-12-01), Uramoto
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patent: 3948705 (1976-04-01), Ausnit
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patent: 4354541 (1982-10-01), Tilman
patent: 4355494 (1982-10-01), Tilman
patent: 4372793 (1983-02-01), Herz
patent: 4532754 (1985-08-01), Hokanson
patent: 4617683 (1986-10-01), Christoff

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