Sealing jaws for zippered foil or film in form, fill and seal ma

Details Sealing jaws for zippered foil or film in form, fill and seal ma Sealing jaws for zippered foil or film in form, fill and seal ma

1990-01-26

1991-11-26

Sipos, John

Package making

Closing packages and filled receptacles

By means adapted to engage outturned seam of package cover

53552, 533742, B65B 5130

Patent

active

050673025

ABSTRACT:
Sealing jaw structure and method for securing zippered package making foil or film material, comprising sealing jaws, one of which carries a pair of spaced material engaging ribs for not only sealing but also tightening the material between the ribs during sealing cooperation of the jaws. The tightening facilitates cutting of the material being engaged between the jaws by a knife carried reciprocably by the jaw that carries the ribs.

REFERENCES:
patent: 2837883 (1958-06-01), Bracey
patent: 4079570 (1978-03-01), Rucker
patent: 4512138 (1985-04-01), Greenawalt
patent: 4551965 (1985-11-01), Prottengeier
patent: 4582555 (1986-04-01), Bower
patent: 4682976 (1987-07-01), Martin et al.
patent: 4727709 (1988-03-01), Zieke et al.
patent: 4745731 (1988-05-01), Talbott et al.
patent: 4768326 (1988-09-01), Kovacs
patent: 4790126 (1988-12-01), Boeckmann
patent: 4807426 (1989-02-01), Smith

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