Mold cleaning sheet and method of producing semiconductor...

Details Mold cleaning sheet and method of producing semiconductor... Mold cleaning sheet and method of producing semiconductor...

2006-05-11

2009-08-11

Huson, Monica A (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

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

C264S328800

Reexamination Certificate

active

07572398

ABSTRACT:
A cleaning sheet (29) is formed with a trough-hole (29a) at a portion corresponding to a cavity of a mold along with a slit (29b) or a flow cavity cut (29c) at every corner at an outer periphery of the through-hole (29a) and is placed between a first mold half and a second mold half of the mold to clean the inside of the mold, thereby improving the cleaning effect of the mold.

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