Laminates of metal and polyester film
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United States of America Patent
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Jun 7, 1994
Issued Date -
N/A
app pub date -
Jul 30, 1992
filing date -
Jun 8, 1989
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Expired
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Abstract
A laminate and a process for making a laminate of aluminum or aluminum alloy and a polyester. The process includes forming a laminate by contacting an aluminum or aluminum alloy sheet or foil with a film of polyester at a temperature and pressure sufficient to adhere the film to the sheet or foil, reheating the laminate to a temperature above the crystalline melting point of the polyester, cooling the laminate at a cooling rate controlled to prevent crystallization of the polyester, and quenching in water such that the molecular weight of the polyester layers in the laminate is between 14,000 and 23,000.
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