Decorative sheet, decorative-sheet-attached display device, sheet article, and method of manufacturing decorative sheet
AssigneeDai Nippon Printing Co., Ltd.
InventorsShunji Fukuda, Shinya Yoda, Tsubasa Takakura, Youhei Kakuba, Hiroyuki Kuniyasu
Life of this patent
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Abstract
A decorative sheet includes a decorative layer. Holes arranged in a plurality of directions are provided in the decorative layer. An average of values of an array pitch of holes arranged in a first array direction, in which the array pitch has a least value among the plurality of directions, and a standard deviation thereof, and an average of values of an array pitch of holes arranged in a second array direction, in which the array pitch has a second least value among the plurality of directions, and a standard deviation thereof, meet particular conditions.
Claims15
A decorative sheet, comprising:
- a decorative layer that visually presents a design, wherein
- holes arranged in a plurality of directions are provided in the decorative layer,
- an average AA1 of values of an array pitch of the holes arranged in a first array direction, in which said average of the values of the array pitch of the holes is a least value among the plurality of directions, is 40 μm or greater and 400 μm or less,
- a value obtained by multiplying, by three, a standard deviation GAI of the array pitch of the holes arranged in the first array direction is 7 μm or less,
- a ratio of the standard deviation σA1, in μm, to the average AA1, in μm, is 0.0060 or greater,
- an average AA2 of values of an array pitch of the holes arranged in a second array direction, in which said average of the values of the array pitch of the holes is a second least value among the plurality of directions, is 40 μm or greater and 400 μm or less,
- a value obtained by multiplying, by three, a standard deviation σA2 of the array pitch of the holes arranged in the second array direction is 7 μm or less, and
- a ratio of the standard deviation σA2, in μm, to the average AA2, in μm, is 0.0060 or greater.
Dependencies are inferred from the claim text.