Method of cleaning semiconductor molding apparatus

Details Method of cleaning semiconductor molding apparatus Method of cleaning semiconductor molding apparatus

1990-09-14

1991-10-01

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

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

425228, B29C 4502, B29C 4517

Patent

active

050531727

ABSTRACT:
A molding apparatus has a fixed upper platen and a movable lower platen on which are secured an upper and a lower mold half, respectively. A cleaning device for cleaning the mold surfaces of the mold halves is installed on the upper platen, and the lower platen is open so that foreign matter will not accumulate atop it.

REFERENCES:
patent: 3086431 (1963-04-01), Perry, Jr.
patent: 3479678 (1969-11-01), Jeffreys
patent: 3690801 (1972-09-01), Hutz et al.
patent: 3801251 (1974-04-01), Coscia
patent: 3941537 (1976-03-01), Abraham
patent: 4626184 (1986-12-01), Hammond

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