Abstract: An armature manufacturing method includes an insulating member disposing step for disposing an insulating member on a core so that first portions of the insulating member protrude to one side in an axial direction from end faces of tooth portions on the one side in the axial direction. The armature manufacturing method includes a bending step for bending, toward each of the tooth portions, the first portions of the insulating member that protrude from the end face of each of the tooth portions on the one side. The armature manufacturing method includes a winding looping step for looping a winding around each of the plurality of tooth portions on which the bent first portions are disposed.

Abstract: A method of bonding a cation exchange membrane of the type having a perfluorosulfonic acid group on one face and a perfluorocarboxylic acid group on the other face, with a reinforcing mesh material embedded therein and a fluorine-containing resin sheet is disclosed.

Abstract: An electrolytic cell having a plurality of porous and tubular cathodes, a plurality of porous anodes and a plurality of bag-shaped molds being formed by a cation exchange membrane in at least the portions facing and between the vertical faces of the anode and cathodes. The anode accommodating bag-shaped molds have apertures at the bottom through which anode connected electroconductive bars extend, said bars being inserted through and secured at corresponding cell bottom plate apertures by flanges. A partition plate, on the top of the cell main body, has a plurality of openings which correspond to the open tops of the bag-shaped molds. The open top edges of the bag-shaped molds are secured to the partition plate openings by a plurality of lid members.