| 摘要 |
PROBLEM TO BE SOLVED: To provide a film forming method no restricting a base material used for forming an anatase-type titanium oxide film and realizing the long-term durability of the anatase-type titanium oxide film in using the base material for a long perod of time. SOLUTION: A film consisting of three layers, that is, a substrate layer comprising a resin layer having adhesive strength with respect to the surface of a base material, an intermediate layer comprising an inorganic substance having no photocatalytic function and a surface anatase-type titanium oxide layer is formed on the base material.
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