| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum fin material the surface of which maintains hydrophilicity over a long period and which materializes little wear of a tool when the material is press-worked.SOLUTION: An aluminum (Al) fin material 1 related to the present invention comprises: a basal plate 2 made of Al or an Al alloy; a first substrate treatment layer 3 formed on one surface of the basal plate 2 and made of inorganic oxide or inorganic-organic compounds; a first hydrophilic film layer 4 formed on the surface of the first substrate treatment layer 3 and containing an inorganic material; a second substrate treatment layer 5 formed on the other surface of the basal plate 2 and made of inorganic oxide or inorganic-organic compounds; and a second hydrophilic film layer 6 formed on the surface of the second substrate treatment layer 5 and not containing the inorganic material. In the aluminum (Al) fin material 1, the first hydrophilic film layer 4 has an average grain diameter of the inorganic material of 10 μm or less, the adhesion amount of the first hydrophilic film layer is 10 to 10000 mg/m, and the ratio of the resin solid content mass to the inorganic material solid content mass is 0.05 or more.SELECTED DRAWING: Figure 1 |
