Method and apparatus for producing drawstring bags

Details Method and apparatus for producing drawstring bags Method and apparatus for producing drawstring bags

B - Operations, Transporting

31

B

93/13

B31B 1/90 (2006.01) B31B 19/90 (2006.01)

Patent

CA 1262419

Abstract of the Disclosure A method and apparatus for forming draw tape bags wherein the bag material moves continuously during the manufacture, except for the last step. A roll of folded web is provided, and the loose edges are turned inwardly to form upper hems for the bags. The web continues to move, and a cutter is actuated to move through a circle and engage the web to punch finger holes in the hem. The web is further carried to a tandem sealer, the web passing over a roll where heated air is directed at the area of the hem. A "Teflon" strip is placed between the hems to prevent sealing them together. The web continues to a second sealing roll where the opposite side is sealed in the same way. The final step utilizes a stop-start apparatus with a side sealing blade. The side sealing blade has one radius for the body of the bag, and a larger radius for the hemmed area.

509043

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