Chemical process apparatus

Details Chemical process apparatus Chemical process apparatus

1982-08-09

1984-01-24

Bleutge, Robert L.

Cleaning and liquid contact with solids

Apparatus

Sequential work treating receptacles or stations with means...

134104, 134154, 134199, B08B 302

Patent

active

044270194

ABSTRACT:
Disclosed is the continuous processing of flat workpieces such as printed circuit boards which are suspended by a hanger conveyorized for continuous horizontal transport. More specifically, the conveyorizing passes the workpieces through a plurality of chambers having slotted-end members, one such chamber spraying to remove the photoresist, and another such chamber spraying etching solution to remove the copper cladding. Each station has a slotted cover, and the conveyor suspends a plurality of workpiece holders, each of the holders being joined by chain links of an inert material which overlie the slot in the covers for the chambers. The photoresist chamber is provided with a continuous filter for cntinuously removing and filtering the sludge, thereby reducing the tendency of the removal solution to dilute and become ineffective. All of the chambers are modularized, and the system is compatible with continuous processing for the plating of the printed circuit boards.

REFERENCES:
patent: 2579575 (1951-12-01), Herdlein
patent: 4231806 (1980-11-01), Henry
patent: 4338958 (1982-07-01), Fujita

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