Aqueous Resist Stripper Filter
Original Publication Date: 1985-Mar-01
Included in the Prior Art Database: 2005-Feb-18
Stripping the aqueous dry film resist from printed circuit boards can be limited by the build-up of resist in the aqueous stripping solution. Since the aqueous dry film resist does not dissolve off the circuit board surface, but rather comes off in sheets and particles of various sizes, removing the solid resist can significantly extend the life of the stripping solution. The aqueous resist stripper filter 1, shown in the figure, removes and collects solids from the stripping solution before the solid resist dissolves.