Integral handled layflat thermoplastic bag

Details Integral handled layflat thermoplastic bag Integral handled layflat thermoplastic bag

B - Operations, Transporting

31

B

B31B 49/00 (2006.01) B31B 19/86 (2006.01)

Patent

CA 2138502

A thermoplastic bag structure and a method for forming handle- containing bags in roll-form. The method includes the steps of forming a continuous collapsed tube; forming pairs of closely spaced seals transverse to the tube at bag length distances apart; forming a transverse line of weakness between each pair of seals; simultaneously or thereafter folding the marginal edges of the tube inwardly toward each other; forming and removing a cut-out region at one end of each sealed segment of the tube so that on removal of he cut-out region, the cut defines loop handles and a bag mouth region in each bag; again folding the marginal edges of the tube inwardly toward each other; and convolutely winding the structure to form severable bags on a roll.

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