Multilayer composite material, especially for closures for plastic containers
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United States of America Patent
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May 29, 1984
Grant Date -
N/A
app pub date -
Aug 20, 1982
filing date -
Aug 26, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multilayer composite material, suitable for capping plastic milk bottles and other containers, comprising; (a) a metal foil, (b) a polyolefin film, and (c) an adhesive layer bonding the metal foil and the polyolefin film together and formed of two compounds A and B; wherein said metal foil has a thickness between 25 and 75 microns; said polyolefin film has a thickness between 10 and 30 microns; and said adhesive layer has a thickness between 0.5 and 6 microns, and preferably between 2 and 5 microns.
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