Integral handled layflat thermoplastic bag

Details Integral handled layflat thermoplastic bag Integral handled layflat thermoplastic bag

1993-12-22

1996-11-12

Lavinder, Jack W.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493243, 493267, 493926, B31B 2386, B31B 2314

Patent

active

055734898

ABSTRACT:
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 the 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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patent: 4699608 (1987-10-01), Pistner
patent: 4720872 (1988-01-01), Kaczerwaski
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patent: 4807754 (1989-02-01), Rowe
patent: 4816104 (1989-03-01), Benoit
patent: 4849090 (1989-07-01), Case et al.
patent: 4923436 (1990-05-01), Gelbard
patent: 4931033 (1990-06-01), Leads
patent: 4931034 (1990-06-01), Wagner
patent: 5078667 (1992-01-01), Williams

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