Decorative sheet for three-dimensional work

1. A decorative sheet, comprising:

a support; and

at least a surface protective layer laminated on the support,

wherein

the decorative sheet is suitable for three-dimensional processing,

the decorative sheet has a breaking elongation (according to JIS K 7127) exceeding 300% at a temperature higher by 40° C. than a thermal deformation temperature of the support, measured by an ASTM D648 method, and

the surface protective layer is obtained by cross-linking and curing an ionizing radiation curable resin composition and has a film thickness of 0.2 to 6.0 μm, wherein the ionizing radiation curable resin composition comprises an ionizing radiation curable resin and a thermoplastic resin in a ratio (weight ratio) of 75:25 to 20:80.

2. The decorative sheet of claim 1 , wherein the surface protective layer has a storage elastic modulus in a range of 7.7×105 to 1.2×108 Pa at 140° C.,

as measured on-a sheet having a width of 10 mm and a thickness of 15 μm, produced by cross-linking and curing the above ionizing radiation curable resin composition, at a cramp-to-cramp distance of 10 mm, with an initial temperature of 30° C., a final temperature of 180° C., a heating rate of 5° C./minute, and a measuring frequency of 1 Hz according to JIS K7244-1 and K7244-4.

3. The decorative sheet of claim 1 , further comprising a transparent thermoplastic resin layer, provided between the support and the surface protective layer.

4. The decorative sheet of claim 3 , further comprising a second thermoplastic resin layer, provided between the support and the transparent thermoplastic resin layer.

5. The decorative sheet of claim 1 , wherein the ionizing radiation curable resin composition is an electron beam curable resin.

6. The decorative sheet of claim 1 , wherein the three-dimensional processing is insert molding.

7. A decorative resin molded matter comprising the decorative sheet of claim 1 .

8. The decorative sheet of claim 2 , further comprising a transparent thermoplastic resin layer, provided between the support and the surface protective layer.

9. The decorative sheet of claim 8 , further comprising a second thermoplastic resin layer, provided between the support and the transparent thermoplastic resin layer.

10. The decorative sheet of claim 3 , wherein the ionizing radiation curable resin composition is an electron beam curable resin.

11. The decorative sheet of claim 8 , wherein the ionizing radiation curable resin composition is an electron beam curable resin.

12. The decorative sheet of claim 1 , wherein the support comprises at least one resin selected from the group consisting of an ABS resin, a polyolefin resin, a styrene resin, an acryl resin, a vinyl chloride resin, and a polycarbonate resin.

13. The decorative sheet claim 2 , wherein the ionizing radiation curable resin composition comprises an ionizing radiation curable resin and a thermoplastic resin in a ratio (weight ratio) of 60:40 to 20:80.

14. The decorative sheet of claim 13 , further comprising a transparent thermoplastic resin layer, provided between the support and the surface protective layer.

15. The decorative sheet of claim 14 , further comprising a second thermoplastic resin layer, provided between the support and the transparent thermoplastic resin layer.

16. The decorative sheet of claim 13 , wherein the ionizing radiation curable resin composition is an electron beam curable resin.

17. The decorative sheet of claim 14 , wherein the ionizing radiation curable resin composition is an electron beam curable resin.