IPC分类号：
B44C1/10 | B44C3/02
国民经济行业分类号：
C2438 | C2436 | C2435 | C2434 | C2433 | C2432 | C2431 | C3076 | C3075 | C2439
当前申请(专利权)人：
3M INNOVATIVE PROPERTIES COMPANY
原始申请(专利权)人：
3M INNOVATIVE PROPERTIES COMPANY
当前申请(专利权)人地址：
3M Center Post Office Box 33427,Saint Paul, Minnesota 55133-3427,US
发明人：
SAITO, KOJI | ABE, HIDETOSHI
代理机构：
VOSSIUS & PARTNER PATENTANWÄLTE RECHTSANWÄLTE MBB
摘要：
A decorative sheet including a base material, a three-dimensional shape printed portion provided on the base material by ultraviolet light curing inkjet printing, and an over-laminate film laminated on the base material and the printed portion, the over-laminate film including a film layer and an adhesive layer and having a three-dimensional shape following the three-dimensional shape of the printed portion.
技术问题语段：
The technical problem addressed in this patent is how to create a printed portion on a decorative sheet, such as an advertising billboard, using an ultraviolet light curing inkjet printer. This method allows for small-scale printing of a wide variety of items, and the ink dries quickly after printing, reducing production time. Additionally, the patent describes how to create a protective layer between the ink layer and an upper printed layer to enhance the appearance of the printed portion.
技术功效语段：
The patent is about using ultraviolet light curing ink to create printed layers that are thick and can be shaped like three-dimensional decorations. To increase durability and weather resistance, a protective layer is added to the surface of the printed layer. The result is a decorative sheet with a unique and realistic-looking surface that has a three-dimensional effect.
权利要求：
Claims
1. A decorative sheet comprising:
a base material;
a three-dimensional shape printed portion provided on the base material and including ultraviolet light curing ink; and
an over-laminate film laminated on the base material and the printed portion, the over-laminate film including a film layer and an adhesive layer and having a three-dimensional shape following the three-dimensional shape of the printed portion.
2. The decorative sheet according to claim 1 , wherein a thickness of at least one part of the printed portion is 7 μιη or greater.
3. The decorative sheet according to claim 1 , wherein a thickness of the film layer is 90 μιη or less.
4. The decorative sheet according to claim 1 , wherein when a surface roughness of the over-laminate film before being laminated on the base material and the printed portion is set as Ra (0), and a surface roughness of the over-laminate film laminated on the base material and the printed portion is set as Ra, a surface roughness change ratio Ra (ratio) of the over-laminate film
represented by Formula (1) is 110% or greater;
Wherein Formula (1) is: Ra (ratio) (%) = (Ra - Ra (0)) / Ra (0) x 100..
5. The decorative sheet according to claim 1 , wherein a surface roughness Rz of the over-laminate film is approximately 10 μιη or greater.
6. The decorative sheet according to claim 1 , wherein the film layer is
transparent.
7. The decorative sheet according to claim 1 , wherein the film layer is colored.
8. The decorative sheet according to claim 1 , wherein a peak temperature of a coefficient of loss (tan5) of the adhesive layer is -20°C or higher.
9. The decorative sheet according to claim 1 , wherein the printed portion has a plurality of printed layers.
10. The decorative sheet according to claim 9, wherein the plurality of printed layers include a first printed layer and a second printed layer having substantially the same planar pattern as the first printed layer and disposed on the first printed layer.
1 1. The decorative sheet according to claim 9, wherein the plurality of printed layers include at least a color layer having low transparency and a stereoscopic form layer with higher transparency than the transparency of the color layer.
12. The decorative sheet according to claim 9, wherein the plurality of printed layers include the first printed layer and the second printed layer having a different planar pattern from the first printed layer and disposed on the first printed layer.
13. The decorative sheet according to claim 1 , further comprising a
surface-protecting layer on an outermost surface of the over-laminate film.
14. A production method of a decorative sheet, the method comprising the steps of:
carrying out ultraviolet light curing inkjet printing on a base material and forming a three-dimensional shape printed portion; and
laminating an over-laminate film on the base material and the printed portion so that an adhesive layer of the over-laminate film faces the base material and printed portion side, the over-laminate film being formed in a three-dimensional shape following the three-dimensional shape of the printed portion.
15. The production method of a decorative sheet according to claim 14, wherein in the lamination step, the over-laminate film is laminated in a state of being heated to 35°C or higher and 85°C or lower.