US 12,257,810 B2
Decorative sheet, and decorative plate
Masataka Wada, Tokyo (JP); Toshinaru Kayahara, Tokyo (JP); Jin Arakida, Tokyo (JP); and Risa Yoshinami, Tokyo (JP)
Assigned to Dai Nippon Printing Co., Ltd., Tokyo (JP)
Appl. No. 17/908,701
Filed by Dai Nippon Printing Co., Ltd., Tokyo (JP)
PCT Filed Mar. 11, 2021, PCT No. PCT/JP2021/009894
§ 371(c)(1), (2) Date Sep. 1, 2022,
PCT Pub. No. WO2021/182583, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 2020-042173 (JP), filed on Mar. 11, 2020.
Prior Publication US 2023/0158783 A1, May 25, 2023
Int. Cl. B32B 27/08 (2006.01); B32B 3/30 (2006.01); B32B 7/03 (2019.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B32B 27/40 (2006.01); B32B 38/00 (2006.01)
CPC B32B 27/08 (2013.01) [B32B 3/30 (2013.01); B32B 7/03 (2019.01); B32B 27/20 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); B32B 27/40 (2013.01); B32B 38/0012 (2013.01); B32B 2038/0028 (2013.01); B32B 2250/05 (2013.01); B32B 2305/72 (2013.01); B32B 2307/412 (2013.01); B32B 2307/518 (2013.01); B32B 2451/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A decorative sheet comprising a laminate, the laminate comprising at least a base material sheet and a first surface-protecting layer in sequence in the thickness direction;
(1) the first surface-protecting layer comprising an ionizing radiation-curable resin containing two kinds of aliphatic urethane acrylates, i.e., resin A and resin B, wherein resin A is an aliphatic urethane acrylate with an isocyanurate skeleton, and resin B is an aliphatic urethane acrylate with an alicyclic skeleton without an isocyanurate skeleton;
(2) the first surface-protecting layer having a nanoindentation hardness of 160 MPa or more and 240 MPa or less; and
(3) the base material sheet comprising a polyolefin resin and having a nanoindentation hardness of 30 MPa or more and 80 MPa or less.