| 摘要 |
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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