Method and apparatus for making flat bottom bags

Details Method and apparatus for making flat bottom bags Method and apparatus for making flat bottom bags

2005-05-03

2005-05-03

Sipos, John (Department: 3721)

Package making

Progressively seamed cover web or web folds

With closing of web between package units

C053S201000

Reexamination Certificate

active

06886313

ABSTRACT:
A flat bottom bag or flexible package, and method for manufacturing same, constructed by modification to existing vertical form and fill packaging machines. The invention involves producing a flat bottom bag from a single sheet of packaging film by creating two vertical creases along opposite sides of a packaging film tube prior to forming a transverse seal on the tube. These creases are formed using fixed or stationary modifications to prior art vertical form, fill, and seal machines.

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