PWM Series – PCB Wet-Chemical Desmear

Desmear machines of the PWM Series completely remove smear in the holes resulting from drilling and roughening. Our desmear equipment disposes of a horizontal conveyor system and comprises following process steps: loading and unloading, swelling, rinsing, desmear, pre-neutralizing and neutralizing, as well as drying. The PWM Series is well combinable with plating through-hole processes.


  • Very good process results for through-holes and blind holes
  • Excellent Mn6+ activation
  • No dirt or residual chemicals after wet cleaning
  • High conveying stability with deviation of only ± 10 mm (with width control device)
  • Equipped with automatic control system to guarantee stable process parameters


  • Over 95 % modularized products
  • Excellent squeeze roller design with low drag-out of ≤ 10 cc/m² to prevent chemical drag-out and contamination
  • Sloped-bottom tanks for chemical processes to minimize solution leftover
  • Sloped-bottom and small-volume tanks for rinsing processes to improve tank turnover rate by 50 %



max. 610 x 610 mm
min. 250 x 250 mm

Panel thickness:

0.1 mm - 3.2 mm traditional PCB
0.8mm – 12 mm backboard

Bore diameter:

Through hole: min. 0.1 mm A/R 10:1
Blind hole: min. 0.075 mm A/R 1:1

Additional data available on request.

Back to overview