Patent ID: 11970310
Assignee: THE GLAD PRODUCTS COMPANY
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A multi-film thermoplastic bag comprising:
a first multi-layer sidewall comprising a first thermoplastic film layer and a second thermoplastic film layer;
a second multi-layer sidewall comprising a third thermoplastic film layer and a fourth thermoplastic film layer;
a first hem seal creating a first hem channel on the first multi-layer sidewall by securing a fold-over of a top edge of the first multi-layer sidewall to an inner surface of the first multi-layer sidewall;
a second hem seal creating a second hem channel on the second multi-layer sidewall by securing a fold-over of a top edge of the second multi-layer sidewall to an inner surface of the second multi-layer sidewall; and
a first region of contact areas on the first multi-layer sidewall, each contact area comprising a flat, in-plane bonded portion in which the first and second thermoplastic film layers are bonded together, each bonded portion surrounded by an unformed separated area, such that the first region of contact areas is arranged in a first discontinuous pattern, wherein:
the first region of contact areas extends from the first hem seal toward a bottom of the multi-film thermoplastic bag,
the contact areas are configured to separate before the first multi-layer sidewall fails when subjected to peel forces,
the first multi-layer sidewall has a substantially uniform gauge in the first region of contact areas due to the contact areas and the unformed separated areas having substantially a same gauge,
the first multi-layer sidewall is substantially flat and in-plane in the first region of contact areas, and
the first region of contact areas exhibits increased flexural rigidity over areas of the first multi-layer sidewall without contact areas.