US 12,305,064 B2
Decorative sheet and method for manufacturing decorative sheet
Erika Akutsu, Tokyo (JP); Yohei Nishikawa, Tokyo (JP); and Kosuke Shimizu, Tokyo (JP)
Assigned to TOPPAN HOLDINGS INC., Tokyo (JP)
Filed by TOPPAN HOLDINGS INC., Tokyo (JP)
Filed on Sep. 9, 2024, as Appl. No. 18/828,345.
Application 18/828,345 is a continuation of application No. PCT/JP2023/009407, filed on Mar. 10, 2023.
Prior Publication US 2024/0425717 A1, Dec. 26, 2024
Int. Cl. C09D 135/02 (2006.01); B05D 3/06 (2006.01); B05D 5/02 (2006.01); B32B 3/30 (2006.01); B32B 27/16 (2006.01); B32B 27/30 (2006.01); B44C 5/04 (2006.01); C08F 22/10 (2006.01); C08F 22/20 (2006.01); C09D 4/00 (2006.01); C09D 5/28 (2006.01); C09D 7/40 (2018.01)
CPC C09D 135/02 (2013.01) [B05D 3/065 (2013.01); B05D 3/068 (2013.01); B05D 5/02 (2013.01); B32B 3/30 (2013.01); B32B 27/16 (2013.01); B32B 27/308 (2013.01); B44C 5/0476 (2013.01); C08F 22/1006 (2020.02); C08F 22/20 (2013.01); C09D 4/00 (2013.01); C09D 5/28 (2013.01); C09D 7/69 (2018.01); B05D 2502/005 (2013.01); B32B 2307/408 (2013.01); B32B 2307/538 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A decorative sheet, comprising:
a primary film layer; and
a surface protective layer disposed on one surface of the primary film layer, wherein
the surface protective layer has a gloss level of 15 or less,
the surface protective layer includes a ridged portion projecting in a ridged pattern from a surface of the surface protective layer to form an uneven shape on the surface,
the surface protective layer contains an ionizing radiation-curable resin as a main material,
the ionizing radiation-curable resin contains, as a main component, a tetrafunctional acrylic resin having a repeating structure,
the number of repetitions of the repeating structure is 12 or more,
a content of vinyl groups contained in the ionizing radiation-curable resin is 20% or less relative to carbonyl groups contained in the ionizing radiation-curable resin, and
the uneven shape of the surface protective layer has RSm/Ra in a range of 10 or greater and 300 or less.