Vertical form, fill and seal packaging machine for making reclos

Details Vertical form, fill and seal packaging machine for making reclos Vertical form, fill and seal packaging machine for making reclos

1993-06-14

1995-03-28

Larson, Lowell A.

Package making

With cover-adjunct application or formation

Adjunct comprising provision to allow access to contents,...

531392, 533736, 53552, B65B 920

Patent

active

054005655

ABSTRACT:
A vertical form, fill and seal packing machine and method for making recloseable bags having a safety seal exterior to a recloseable seal. The machine produces durable, substantially air-tight bags at high speed and provides for the production of different size bags and different amounts of product in the bags. The machine includes a film drive and pinch roll pair, a pair of film pull belts, and a pair of zipper drive rollers for pulling the plastic film and zipper strip through the machine. The production of different size bags is facilitated by having the film drive roll, pull belts, and zipper drive rollers simultaneously driven in bag length increments by a common drive source. Also, to accommodate the production of different size bags, the machine includes a vertically adjustable mark sensor. Further, the machine and method of the present invention insures reliable seals along the edges of each product filled bag by having the zipper drive rollers and a bag grabber mechanism stretch the bag material prior to cross-sealing and severing the bag material.

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TRANSPACK II Sales Brochure, Copyright 1990 Eagle Packaging Group, Oakland, Calif. 94621.

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