| 摘要 |
PURPOSE: A multilayered coating film for tin vacuum evaporation for painting on thermoplastic polyurethane, and a product including the same are provided to sufficiently reveal the properties of the thermoplastic polyurethane, and to supply a coating film with a good adhesiveness to the thermoplastic polyurethane. CONSTITUTION: A multilayered coating film for tin vacuum evaporation for painting on thermoplastic polyurethane includes an under coat layer, a tin-layer, an intermediate coat layer, and a finishing coat layer. The under coat layer is formed by spreading an under coat main agent and an under coat paint containing a hardening agent on the thermoplastic polyurethane. The under coat main agent includes 40 to 60 wt% of a medium-hardened polyester resin, 30 to 40 wt% of a soft polyester resin, 5 to 15 wt% of a ketone-solvent, 1 to 10 wt% of a cellosolve based solvent, 0.5 to 1 wt% of a catalyst, and 1 to 5 wt% of an additive. The tin-layer is formed by evaporating tin on the under coat layer. The intermediate coat layer is formed by spreading an intermediate coat main agent and an intermediate coat paint containing the hardening agent on the tin-layer. The intermediate coat main agent includes 40 to 60 wt% of the medium-hardened polyester resin, 30 to 40 wt% of the soft polyester resin, 5 to 15 wt% of the ketone-solvent, 1 to 10 wt% of the cellosolve based solvent, 0.5 to 1 wt% of the catalyst, 1 to 5 wt% of the additive, and 1 to 10 wt% of a pigment. The finishing coat layer is formed by spreading a finishing coat main agent and a finishing coat paint containing the hardening agent on the intermediate coat layer. The finishing coat main agent includes 40 to 60 wt% of the medium-hardened polyester resin, 30 to 40 wt% of the soft polyester resin, 5 to 15 wt% of the ketone-solvent, 1 to 10 wt% of the cellosolve based solvent, 0.5 to 1 wt% of the catalyst, and 1 to 5 wt% of the additive. The ketone-solvent is selected from a group of methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone. The cellosolve based solvent is selected form a group of cellosolve acetate, ethyl cellosolve, and butyl cellosolve. The pigment is selected from a group of titanium dioxide, phthalocyanine blue, molybdate blue, and carbon black.
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