Invention Grant
- Patent Title: Decorative sheets
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Application No.: US17351116Application Date: 2021-06-17
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Publication No.: US11446906B2Publication Date: 2022-09-20
- Inventor: Yoshimi Yamasaki , Mami Nagashima , Masamitsu Nagahama , Masatoshi Takahashi
- Applicant: TOPPAN PRINTING CO.,LTD.
- Applicant Address: JP Tokyo
- Assignee: TOPPAN PRINTING CO.,LTD.
- Current Assignee: TOPPAN PRINTING CO.,LTD.
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JPJP2018-237475 20181219,JPJP2018-241487 20181225,JPJP2019-109383 20190612
- Main IPC: B32B27/08
- IPC: B32B27/08 ; B32B27/20 ; B32B27/32 ; B32B7/12 ; B32B27/16

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.
Public/Granted literature
- US20210316540A1 DECORATIVE SHEETS Public/Granted day:2021-10-14
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