Yuasa Electrolytic Diaphragm for Plating

ユアサ めっき用電解隔膜

The electrolytic diaphragm controls the consumption of additives and enhances plating performance.


  • Being microporous, the neutral membrane involves low electric resistance and smaller movements of liquid.
  • Highly resistant to chemicals.
  • It can be handled easily because it can be kept in dry conditions before use.
  • It can be processed in many different forms such as slit, bag and frame welding.
  • Less expensive than ion exchange membranes.


  • Diaphragm for copper plating (especially effective in printed circuit boards necessitating fine controls, such as via filling and through hole)
  • Diaphragm for nickel plating
  • All applications of electric plating


Model Material Thickness*1
Electricity resistance*2
Membrane polarity Water permeability
at 50.7kPa、25℃)
Membrane material Base material
Y-9201T Polyvinylidene fluoride resin
Titanium oxide
Terephthalate resin
≦0.0060 Neutral ≧30 Can be stored in dry conditions
Y-9205TA Polyvinylidene fluoride resin
Titanium oxide, sucrose fatty acid ester
≦0.0060 ≧10

*1 Measured with a micrometer
*2 Based on the voltage drop method (d=1.200 H2SO4 25℃)

Effects of the diaphragm

Effects of the diaphragm

Comparison of cost for additive (examples)

Comparison of cost for additive
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Product information

Wide application of Yuasa Membrane System’s products