Zinc-plated steel plate having resin coating film

A zinc-plated steel sheet having a resin coating film formed on a surface thereof, comprising:

• (a) a base steel sheet plated with zinc or a zinc alloy to form a plating layer;
• (b) a chromate treating layer formed on the plating layer of said base sheet, said chromate treating layer being deposited in an amount of 1 to 200 mg/m.sup.2 in terms of metal chromium;
• and
• (c) a resin coating film formed on the chromate treating layer in a thickness of 0.1 to 5 .mu.m, said resin coating film comprising (i) a composite resin material including a resin composition and (ii) a chromium compound or both a chromium compound and silica, in an amount of at most 50% by weight,
• said resin composition containing a reaction product of an ethylene-based ionomer resin and a silane compound having a single silicon atom and 2 to 4 silyl ether bonds and/or a condensate of the silane compound.