Tear resistant separable end-connected bags

Details Tear resistant separable end-connected bags Tear resistant separable end-connected bags

B - Operations, Transporting

31

B

164/1, 93/32, 93

B31B 23/14 (2006.01) B31B 27/00 (2006.01) B65D 33/00 (2006.01)

Patent

CA 1082508

ABSTRACT Of THE DISCLOSURE Continuous strip closed-bottom open-mouthed packaging bags are produced by continually making, at spaced intervals in a continuous flattened tubular oriented plastic film supply, a transversely extending heat seal to define a bag bottom, and, adjacent each heat seal, perforating the two bottom plies of the film supply with a blade heated to effected annealing of the edges of the perforations and having a serrated cutting edge with spaced deep recesses to define connecting tabs between perforation.

238087

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