公开(公告)号：US20210316540A1

公开(公告)日：2021-10-14

申请号：US17351116

申请日：2021-06-17

Applicant: TOPPAN PRINTING CO.,LTD.

Inventor： Yoshimi YAMASAKI ,  Mami NAGASHIMA ,  Masamitsu NAGAHAMA ,  Masatoshi TAKAHASHI

IPC: B32B27/08 ,  B32B27/32 ,  B32B27/20 ,  B32B27/16 ,  B32B7/12

Abstract: A decorative sheet includes a primary film layer; a transparent resin layer; and a surface protective layer, in this order; the surface protective layer is formed of a plurality of layers with a layer located on an outermost surface is a surface protective layer, and a layer underlying the surface protective layer is a second surface protective layer and includes one or more ionizing radiation-curable resins having an erosion rate E in a range of 0.10 μm/g or more and 0.45 μm/g or less, and one or more thermosetting resins having an erosion rate E in a range of 0.30 μm/g or more and 0.6 μm/g or less, the erosion rate E being measured by using polygonal alumina powder having an average particle size (D50) of 1.2 μm, and a mass ratio between the ionizing radiation-curable resin and the thermosetting resin (ionizing radiation-curable resin/thermosetting resin) is 95/5 to 40/60.