B - Operations – Transporting – 31 – B
Patent
B - Operations, Transporting
31
B
B31B 23/00 (2006.01) B31B 19/98 (2006.01) B31B 21/00 (2006.01)
Patent
CA 2061854
22 PROCESS AND APPARATUS FOR MANUFACTURE OF DUAL TAB MERCHANDISING BAG ABSTRACT OF THE DISCLOSURE A bag making machine is modified at the discharge side to include upwardly protruding stacking pins at the stacking area of the severed bags adjacent the open and fused ends of the bag. The sealed and severed bags are impressed downward over the stacking pins after severing to immediately impale discharged bags at their upstream, open, and trailing end so that severed bags are aligned at their open end in precise registry one stacked on another. Preferably, and at the time each individual bag is stacked, the bag is fused in the gusset area at the upper open corners of the bag to bags immediately below. This fusing continues with each stacked individual bag until the total number of bags required for the bag packet is counted. When the correct number of bags for the bag packet is counted, stacked and fused at the end of each serial stream of bags, spaced apart paired gripping fingers grasp the bag packet at the sealed and stacked bottom ends of the bags constituting the packet. At substantially the same time, the respective locator or stacking pins retract from the stacking area at the fused open end of the stacked bag packet, and the bag packet is free to move. The bags are dragged from the stacking area by the bottom sealed portion with the top open portion being the trailing part of the dragged mass down stream to a universal cutting table. One portion of the cut defines in each bag packet the required handle hole in the front and rear panels of the stacked bags. The other portion of the cut defines in each bag packet the required cut around the fused portion of the bag to define the bag tabs. C:WP51\Patent\151382.D
Fetherstonhaugh & Co.
Polytec Packaging
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