US 12,246,556 B2
Metal tone decorative sheet and metal tone decorative molded body provided with metal tone decorative sheet
Tsuyoshi Amano, Tsukuba (JP); Atsushi Tokumitsu, Kashiwa (JP); and Yuki Togo, Nagareyama (JP)
Assigned to DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
Appl. No. 17/788,170
Filed by DAI NIPPON PRINTING CO., LTD., Tokyo (JP)
PCT Filed Dec. 24, 2020, PCT No. PCT/JP2020/048440
§ 371(c)(1), (2) Date Jun. 22, 2022,
PCT Pub. No. WO2021/132461, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-239468 (JP), filed on Dec. 27, 2019.
Prior Publication US 2023/0033148 A1, Feb. 2, 2023
Int. Cl. B44F 5/00 (2006.01); B44C 1/10 (2006.01); B44C 1/14 (2006.01)
CPC B44F 5/00 (2013.01) [B44C 1/105 (2013.01); B44C 1/14 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A metal tone decorative sheet comprising a metal layer on a base material layer, and
a heat-sensitive adhesive layer or a pressure-sensitive adhesive layer on a metal layer side being an opposite side to the base material layer, wherein:
the metal layer comprises a plurality of island portions containing metal and a sea portion positioned between the island portions;
the island portion is a convex quadrangle in a cross-sectional view, one side of the quadrangle being opposed to the base material layer; and
0 nm≤x−y≤80 nm where a length of a side of the island portion on the base material layer side is x, in nm, and a length of a side of the island portion on an opposite side to the base material layer is y, in nm.