Adhesive bonding and miscellaneous chemical manufacture – Differential fluid etching apparatus – With microwave gas energizing means
Patent
1988-05-27
1989-05-02
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Differential fluid etching apparatus
With microwave gas energizing means
156640, 156655, 156668, B44C 122, B29C 3700, C03C 1500, C03C 2506
Patent
active
048265560
ABSTRACT:
A plastic mold decapsuling apparatus for decapsuling a plastic mold by feeding an etchant to the plastic mold comprises an etchant bottle; an etchant tank; a decapsuling plastic mold holder; an etchant feeding pump; and, in particular, a bell-shaped cover cap for shielding a plastic mold to be decapsuled on the mold holder from outside air to maintain pressure of the etchant fed by the etchant feeding pump. Since the plastic mold is shielded, even if the plastic mold is decapsuled, it is possible to maintain the etchant feeding pressure at a constant level without introducing outside air into the etchant recirculating passage, thus permitting a stable decapsuling treatment.
REFERENCES:
patent: 4344809 (1982-08-01), Wensink
patent: 4359360 (1982-11-01), Harris et al.
ISTFA 1985 International Symposium for Testing and Failure Analysis, Oct. 21-23, 1985.
Kusumoto Chemicals Co., Ltd.
Nippon Scientific Co., Ltd.
Powell William A.
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