ALUMINUM COATED PLATE AND MANUFACTURING METHOD OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a lubricating coating film coating aluminum material for molding processing used for an electric/electronic equipment member, a body sheet material for vehicles, a construction material, a container and the like which has an excellent press molding property and corrosion resistance. SOLUTION: The aluminum plate includes: an aluminum substrate; and a lubricating coating film which is formed at least on one face of the aluminum substrate and has a dry thickness of 0.1 to 10.0μm. The aluminum substrate has an oxide coated film whose thickness is≤100Åon its surface. The lubricating coating film includes: a water-based urethane resin; 1 to 50 wt.% of silica to 100 wt.% of the solid content of the water-based urethane resin; 1 to 30 wt.% of at least either a polyolefin system wax with 0.1 to 30.0μm of average particle size or a fluororesin to 100 wt.% of the solid content of the water-based urethane resin as a lubricant. The silicon atom concentration existing in the lubricating coating film from the surface to the depth of 50 nm is lower than the silicon atom concentration existing in the lubricating coating film of the depth 50 nm or deeper. COPYRIGHT: (C)2011,JPO&INPIT