Thermoplastic films with visually-distinct stretched regions and methods for making the same
AssigneeThe Glad Products Company
InventorsRobert T. Dorsey, Michael G. Borchardt
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Abstract
Thermoplastic films include intermittent stretched regions that are visually distinct from un-stretched regions. The stretched regions can be white, opaque, and non porous. The thermoplastic films with visually-distinct stretched regions can be formed into bags for use as trash can liners or food storage. Additionally, methods of stretching thermoplastic films to create non-porous, white, and opaque stretched regions include incrementally stretching a film of a thermoplastic material and a voiding agent.
Claims18
An incrementally-stretched film with visually-distinct stretched regions, comprising:
- a film layer of linear low-density polyethylene including a first plurality of un-stretched regions and a second plurality of stretched regions intermittently dispersed about the first plurality of un-stretched regions;
- wherein the stretched regions are:
- non-porous, and
- more opaque than the un-stretched regions.
A method for incrementally stretching a film to create visually-distinct stretched regions, comprising:
- providing a film, the film comprising between about 65 and about 99 percent by weight of a thermoplastic material, and between about 1 and about 35 percent by weight of a voiding agent;
- and
- cold stretching the film to create non-porous stretched regions intermittingly dispersed among un-stretched regions;
- wherein the stretched regions are more opaque than the un-stretched regions of the film.
Dependencies are inferred from the claim text.