MULTI-LAYERED FILMS WITH VISUALLY-DISTINCT REGIONS AND METHODS OF MAKING THE SAME

摘要

Multi-layered 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 multi-layered 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 visually distinct stretched regions include incrementally stretching a plurality of film layers, at least one of which includes a thermoplastic material and a voiding agent.

主权项

1. A thermoplastic bag, comprising:
first and second sidewalls, each sidewall including:
a first film layer of linear low-density polyethylene and a voiding agent;a second film layer of linear low-density polyethylene intermittently bonded to the first layer;a plurality of un-stretched regions formed in the first and second film layers, the un-stretched regions having a first average thickness;a plurality of stretched regions intermittently dispersed about the plurality of un-stretched regions, the stretched regions having a second average thickness that is smaller than the first average thickness;wherein:the stretched regions are more opaque than the un-stretched regions, andthe multi-layered incrementally-stretched film is non-porous.