Decorative sheet and method of producing decorative sheet

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 has on its surface a ridged portion projecting in a ridged shape to form an uneven shape,
• the surface protective layer contains as a main material an ionizing radiation-curable resin,
• the ionizing radiation-curable resin contains as a main component an acrylic resin containing a repeating structure,
• the repeating structure is one of an alkylene structure, an ethylene oxide structure, a propylene oxide structure, and an ε-caprolactone structure, and
• an acrylic monomer forming the acrylic resin has two or more and four or less acryloyl groups, and a shaping parameter expressed by Formula 1 below is in a range of 0.8 or more and 3.4 or less.
• [
• Math
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• 1
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• 
• [
• Formula
• ⁢
• 1
• ]
• Shaping
• ⁢
• parameter
• =
• Number
• ⁢
• of
• ⁢
• functional
• ⁢
• groups
• /
• 6
• Chain
• ⁢
• length
• ⁢
• between
• ⁢
• acryloyl
• ⁢
• groups
• /
• 100
• Wherein in Formula 1, “number of functional groups” indicates the number of acryloyl groups (functional groups) of the acrylic monomer, and “chain length between acryloyl groups” indicates a sum of the number of carbons and the number of oxygen atoms which connect between carbonyl carbons of the acryloyl groups of the acrylic monomer, wherein the number of methyl carbons branched in a middle, like propylene oxide, is not contained in “chain length between acryloyl groups”, indicating the number of atoms which connect between acryloyl groups with the shortest length and when the acrylic monomer has three or more acryloyl groups, the largest value is selected from all combinations of the chain lengths between acryloyl groups, and the selected value (number of atoms) is determined as “chain length between acryloyl groups” in Formula 1.)