Metal gasket and method of producing the same
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United States of America Patent
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Jul 14, 1992
Grant Date -
N/A
app pub date -
Jul 28, 1989
filing date -
Jul 28, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of producing a metal gasket includes steps of alkaline cleaning a metal plate, coating a non-rinse chemical for chromate conversion of surfaces of the metal plate and drying to form chromate films, coating an adhesive on the chromate films and drying or baking the adhesive to form adhesive layers, and coating a rubber compound of a sheet-like or an amorphous mixed compound to a predetermined thickness on the adhesive layers and heating and vulcanizing the rubber compound to form rubber coated metal plate. A metal gasket manufactured in this manner has a high bonding power of the rubber layers to the metal plate to obtain an improved durability for long use.
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