antifoam tips

Antifoam is unfortunately a necessary evil for developing and resist stripping spray processes. I say unfortunate because antifoams are typically petroleum- based products that we do not want on the panel.

However, the surfactants which are in the resist are dissolved into the developer or resist stripper bath and must be controlled. If this foaming isn’t controlled, it can lead to not only a mess, but a loss of spray pressure, due to pump cavitation.