Mold cleaning composition, sheet for cleaning mold, and method for cleaning mold using said cleaning sheet
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United States of America Patent
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-
Jun 19, 1990
Grant Date -
N/A
app pub date -
Dec 11, 1987
filing date -
Dec 11, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A mold-cleaning composition and sheet comprising an uncured rubber composition comprising an uncured rubber and a curing agent, and at least one removal aid selected from imidazoles and imidazolines, and a method for cleaning a mold using the mold-cleaning sheet, are disclosed. The mold-cleaining sheet is suitably used to clean molding surfaces of a mold or to remove contaminants such as burr formed at peripheries thereof in the continuous production of semiconductor devices by transfer molding.
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