Decorating laminated film for three-dimensional molded article, production method thereof, and three-dimensional decorating method
The present disclosure is aimed at providing a laminated film for decorating a three-dimensional molded product with which problems on a split, white turbidity and the like in the laminated film for decorating a three-dimensional molded product having a metallic tone design layer can be improved and an outer film having excellent characteristics with regard to scratch resistance, hardness, chemical resistance, and the like on the surface of the film after decorating can be formed. A laminated film for decorating a three-dimensional molded product, having an adhesion layer (A), a metallic tone design layer (B) constituted of a coating film layer (B-1) containing vapor-deposited aluminum or a vapor-deposited metal layer (B-2) composed of indium or tin, a clear coating film layer (C) composed of an energy ray-curable coating film, and a base material film layer (D).
1. A laminated film for decorating a three-dimensional molded product, comprising:
an adhesion layer (A),
a metallic tone design layer (B) constituted of a coating film layer (B-1) containing vapor-deposited aluminum, or a vapor-deposited metal layer (B-2) composed of indium or tin,
a clear coating film layer (C) comprising an energy ray-curable coating film, and
a base material film layer (D),
wherein the clear coating film layer (C) is formed from an active energy ray-curing type coating composition containing a polyurethane acrylate (C1), a monomer/oligomer (C2) having an unsaturated double bond, and a polymerization initiator (C3), and
wherein the polyurethane acrylate (C1) has a double bond equivalent of 130 to 600 g/eq, a molecular weight of 3000 to 200000, and a urethane concentration of 300 to 2000 g/eq.
2. The laminated film according to claim 1 , wherein the metallic tone design layer (B) has a thickness of less than, or equal to, 5 μm.
3. The laminated film according to claim 1 , further comprising a design layer (G) formed by printing.
4. The laminated film according to claim 1 , further comprising a protective layer (F) adjacent to the metallic tone design layer (B).
5. A method of decorating a three-dimensional molded product, comprising a step of bonding the adhesion layer of the laminated film according to claim 3 to a surface of the three-dimensional molded product under a heating condition.
6. A method of decorating a three-dimensional molded product, comprising a step of bonding the adhesion layer of the laminated film according to claim 4 to a surface of the three-dimensional molded product under a heating condition.
7. The laminated film according to claim 3 , further comprising:
a protective layer (F) adjacent to the metallic tone design layer (B).