LAYERED FILM AND PRODUCTION METHOD THEREFOR, AND FUEL BATTERY PRODUCTION METHOD

In this invention, a base material layer, a first layer containing an acid-modified olefin-based resin, a second layer containing a cyclic olefin-based resin, and an ion-exchange resin-containing layer containing an ion-exchange resin are layered in this order to prepare a layered film. Each of the second layer and the first layer may be a layer formed by coating. The second layer may have a mean thickness of 30 micro m or less. Layers other than the ion-exchange resin-containing layer may be released from the layered film to produce a membrane electrode assembly for a solid polymer-type fuel battery. The layered film is such that, even if a release layer has been formed from a cyclic olefin-based resin, the layered film can attach firmly to a base material and can be released smoothly from the ion-exchange resin-containing layer serving as a transfer medium, without using a component having a high environmental...