Method for manufacturing polishing cloths
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United States of America Patent
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Nov 24, 1987
Grant Date -
N/A
app pub date -
Feb 24, 1986
filing date -
Dec 16, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for manufacturing polishing cloths of the class to be used with abrasive powders on a lapping machine is disclosed. The method comprises the steps of impregnating a nonwoven fabric sheet with a solution of polyurethane elastomer, wet-coagulating the impregnated sheet, and heating the resulting microporous composite sheet at a temperature higher than the softening point of the polyurethane elastomer under an essentially uncompressed condition.
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