US 12,251,915 B2
Decorative sheet
Takehiko Hiroshima, Tokyo (JP); Yoshio Okabe, Tokyo (JP); and Yoshio Sukegawa, Tokyo (JP)
Assigned to Dai Nippon Printing Co., Ltd., Tokyo (JP)
Appl. No. 17/437,219
Filed by Dai Nippon Printing Co., Ltd., Tokyo (JP)
PCT Filed Mar. 14, 2019, PCT No. PCT/JP2019/010597
§ 371(c)(1), (2) Date Sep. 8, 2021,
PCT Pub. No. WO2020/183713, PCT Pub. Date Sep. 17, 2020.
Prior Publication US 2022/0048273 A1, Feb. 17, 2022
Int. Cl. B32B 3/30 (2006.01); B44C 3/02 (2006.01); B44F 1/02 (2006.01)
CPC B32B 3/30 (2013.01) [B44C 3/02 (2013.01); B44F 1/02 (2013.01); B32B 2307/584 (2013.01); B32B 2451/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A decorative sheet comprising:
a plurality of regions each provided with a linear recess-and-protrusion-pattern portion having a plurality of grooves arranged side by side, wherein the linear recess-and-protrusion pattern portion is segmented into closed regions, which include adjacent closed regions different in the form of grooves, wherein one closed region has a first groove extending direction, a first depth, a first protrusion width, and a first groove width, while another closed region adjacent to the one closed region has a second groove extending direction, a second depth, a second protrusion width, and a second groove width, at least one of which differs from that of the one closed region; and
a plurality of dot-shaped protrusion pattern portions that are interspersed in the plurality of regions each provided with the linear recess-and-protrusion pattern portion and the dot-shaped protrusion pattern portions protruding at least to a height greater than that of a protrusion of the linear recess-and-protrusion pattern portion, wherein the dot-shaped protrusion pattern portions are different from each other and all dot-shaped protrusion pattern portions are arranged such that they neither have plan view shapes congruent to one another nor are arranged at regular pitches in a plane in plan view in the direction normal to the surface of the sheet surface.