By coating fluorine resin oln the printing(back) side has major effect on the soldier detaching from the plate and also could reduce the frequency of cleaning. The photo on the right. 1oo printing in a row in lead-to-lead pitch 0.5mm QFP

Decreasing the number of cleaning will lead to enhancing production.

Fluorine coating on the back and inner side of the SUS plate. It will add water-resistance and improve soldier printing. Moreover, it will stabilize soldier transfer amount and allow printing quality and cutback frequency of cleaning.