Flexible packaging film
First Claim
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1. A FIRST EXTERIOR LAYER CONSISTNG OF BIXIALLY ORIENTED POLYPOLYLENE,
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Abstract
A multiple-layer flexible packaging film including layers of nylon, biaxially oriented polypropylene and a heat sealable polyolefin in which the polypropylene and the heat sealable polyolefin form exterior layers and the nylon is an interior layer positioned therebetween. A saran barrier layer is also included as an interior layer.
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Citations
3 Claims
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1. A FIRST EXTERIOR LAYER CONSISTNG OF BIXIALLY ORIENTED POLYPOLYLENE,
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2. A flexible packaging film according to claim 1 further including:
- a saran barrier layer positioned between the first and second exterior layers.
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3. AN INTERIOR LAYER CONSISTING OF NYLON POSITIONED BETWEEN THE FIRST AND SECOND EXTERIOR LAYERS, THE FILM CHARACTERIZED IN TAT THE SECOND EXTERIOR LAYER AND THE INTERIOR LAYER ARE EACH MORE EXTENSIBLE THAN THE FIRST LAYER TO PROVIDE A FILM PARTICULARLY SUITABLE FOR MAKING GAS-FILLED PACKAGES RESISTANT TO COMPRESSIVE FAILURE AND BURST FAILURE.
Specification