SUBSTRATE FILM FOR CATALYST TRANSFER FILM AND METHOD FOR PRODUCING SAME, METHOD FOR PRODUCING CATALYST TRANSFER FILM, AND ELECTROLYTE MEMBRANE WITH CATALYST LAYER

摘要

A substrate film (1) for use in a catalyst transfer film (7) is provided. The substrate film (1) is used in a catalyst transfer film (10) that has the substrate film (1) and a catalyst layer (9) formed of a catalyst ink (8) on one surface of the substrate film (1), the catalyst transfer film transferring the catalyst layer (9) to a solid polymer electrolyte membrane (11). The substrate film (1) for use in a catalyst transfer film (7) is provided with a marginal edge layer (2) formed of a surface treatment material having no affinity for the catalyst ink (8), in an area of a marginal edge of a target area that is set in advance for forming a target pattern of the catalyst layer (9).