Multi-layer packaging material
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United States of America Patent
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-
Oct 17, 1989
Grant Date -
N/A
app pub date -
Apr 27, 1988
filing date -
Apr 27, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention provides a strong multi-layer packaging material having a high mechanical resistance and an impermeability to gases and vapors. It comprises at least the following layers: (1) an outer layer of polyester (2) a first inner layer of oriented polypropylene affixed to the polyester layer (3) a second inner layer of metallic foil affixed to the oriented polypropylene layer (4) an outer layer of polyethylene affixed to the metallic foil layer and between said layers are layers of adhesive.
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