Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – Molding of thermosetting or cross-linking stock
Patent
1993-10-14
1994-10-18
Nguyen, Khanh
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
Molding of thermosetting or cross-linking stock
425556, 425436R, 425444, 425DIG51, 425DIG228, 26427217, 2643289, B29C 4502, B29C 4514, B29C 4538, B29C 4542
Patent
active
053562836
ABSTRACT:
A metal mold for sealing a semiconductor device with a resin and including a shutter gate mechanism. The mold drives a shutter gate pin by using the ejection stroke of a conventional seal press, and therefore eliminates the need for an extra drive source. It follows that the mold can be implemented only if an existing facility is slightly modified, and it is lower in cost than conventional metal molds.
REFERENCES:
patent: 4466934 (1984-08-01), Cane et al.
patent: 4723899 (1988-02-01), Osada
patent: 5074779 (1991-12-01), Tsutsumi et al.
patent: 5141430 (1992-08-01), Mans et al.
Hamada Makoto
Ise Hiroshi
NEC Corporation
Nguyen Khanh
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