| 摘要 |
Presented are a preparation method of a separation membrane for an electrochemical device, and a preparation apparatus therefor, the preparation method comprising the steps of: supplying a porous separation membrane substrate; coating one surface of the porous separation membrane substrate with a first coating agent and a second coating agent by means of a first coating part of a die coating method, comprising a first roller; coating the other surface of the porous separation membrane substrate with a third coating agent by means of a second coating part of a roll coating method, comprising a second roller; and forming a first coating layer, a second coating layer and a third coating layer by drying the porous separation membrane substrate coated with the first coating agent, the second coating agent and the third coating agent, wherein a pattern is formed on the surface of the second roller. |
