| 摘要 |
PROBLEM TO BE SOLVED: To provide an ion exchange membrane which is obtained by using a plain-weave reinforcing woven fabric, has elution holes formed by dissolving sacrifice yarns in the membrane and is free from leakage of an anode solution from each elution hole to the out side of the membrane when an electrolytic cell is operated, and to provide a method for producing the same. SOLUTION: The method for producing the cation exchange resin comprises forming a membrane comprising a polymer having a cation exchange group on both surfaces of the plain-weave reinforcing woven fabric which has been woven while using, as warp yarns, the sacrifice yarns, each having a number of twist of 0 to 350 turn/m and, as weft yarns, the sacrifice yarns, each having a number of twist of <=200 turn/m and then dissolving the sacrifice yarns by an acid or an alkali so as to form sacrifice yarn elution holes in the membrane, which holes are flat in the direction of the plane of the membrane. |
