Patent ID: 8119222

Claim:
A pre-coated metal sheet for being press molded into slot-in drive cases which comprises: a metal sheet; chemical conversion coatings formed on both sides of the metal sheet; and a coating film A which is a coating film formed on one of said chemical conversion coatings, and contains at least one base resin al selected from the group consisting of a polyester-series resin, an epoxy-series resin and an acrylic-series resin, at least one type of resin beads a 2 selected from the group consisting of nylon-series resin beads, fluorine-series resin beads and urethane-series resin beads, and at least one lubricant a 3 selected from the group consisting of carnauba wax, polyethylene wax and microcrystalline wax; said coating film A having a surface which has an arithmetical mean deviation of assessed profile Ra of from greater than 0.3 μm to less than or equal to 4.5 μm and a mean width of profile elements RSm, of from 105 to 280 μm, and a ratio of mean particle diameter of said resin beads a 2 to coating film layer thickness of said coating film A being in a range of from 2.0 to 3.0 , whereby the coating film A has a disk scratch-preventive property when contacting an optical disk, wherein a number of agglomerates in a range of 2≦x≦4 and composed of 35 or more resin beads a 2 are present in said coating film A per 1 mm 2 of its surface, and said coating film A has a coefficient of dynamic friction of 0.15 or less at its surface.