Mold cleaning composition, sheet for cleaning mold, and method f

Details Mold cleaning composition, sheet for cleaning mold, and method f Mold cleaning composition, sheet for cleaning mold, and method f

1987-12-11

1990-06-19

Lieberman, Paul

Plastic and nonmetallic article shaping or treating: processes

With step of cleaning, polishing, or preconditioning...

106 386, 524156, 428286, B32B 2502, B32B 2500

Patent

active

049351753

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.

REFERENCES:
patent: 1929560 (1933-10-01), Marton
patent: 3476599 (1969-11-01), Graver et al.
patent: 4670329 (1987-06-01), Pas

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