TEAR RESISTANT SEPARABLE END-CONNECTED BAGS

摘要

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.