Easy-open flexible pouch and apparatus and method for making sam

Details Easy-open flexible pouch and apparatus and method for making sam Easy-open flexible pouch and apparatus and method for making sam

1988-10-07

1989-08-29

Sipos, John

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With cutting, punching, piercing, severing, or tearing

53133, 53373, 53551, 156515, 156581, 1565831, 493203, 493209, 493237, 493930, 493963, B32B 3118, B32B 3120, B65B 6118, B65B 5114

Patent

active

048614149

ABSTRACT:
A pouch and a method and apparatus for forming an easy open pouch in a vertical form-fill-seal process wherein a pouch is formed from a sheet of thermoplastic film and a heat seal between pouches as they are filled serves as the top closure for the lower pouch and a bottom closure for the upper pouch, the easy open feature being provided by a U-shaped portion having a plurality of seal ribs, and a tear initiation notch.

REFERENCES:
patent: 3234069 (1966-02-01), Saas
patent: 4147583 (1979-04-01), Deutschlander
patent: 4582555 (1986-04-01), Bower
patent: 4682976 (1987-07-01), Martin
patent: 4795271 (1989-01-01), Lane

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