当前申请(专利权)人地址：
No. 1, Kanda Izumi-cho, Chiyoda-ku, TOKYO, XX, JP
摘要：
Disclosed is a phosphorescent article having a first transparent resin layer, a phosphorescent layer, and a second transparent resin layer sequentially superposed in the order mentioned on a supporting layer possessed of a reflective surface. The phosphorescent layer is coated in a tightly sealed state with the first and second transparent resin layers. Preferably the second transparent resin layer has a projecting part so formed as to protrude from the surface of the part thereof which covers the phosphorescent layer, namely in the part which corresponds to the underlying phosphorescent layer, and a surface layer (printed layer) is printed or applied on the part of the surface other than the projecting part, namely on the surface of the part in which the phosphorescent layer does not exist. SrAl2O4 is used as a phosphorescent pigment to be contained in the phosphorescent layer and a transparent resin containing no ultraviolet absorbent is used for the first and second transparent resin layers.
权利要求：
WHAT IS CLAIMED IS : 1. A phosphorescent article comprising a supporting layer possessed of a reflective surface, a first transparent resin layer superposed on said supporting layer, a phosphorescent layer superposed on said first transparent resin layer, and a second transparent resin layer superposed on said phosphorescent layer, said phosphorescent layer containing mainly SrAl2O4 as a phosphorescent pigment and being coated in a tightly sealed state with said first and second transparent resin layers.
2. The phosphorescent article according to claim 1, wherein said first and second transparent resin layers are made of a transparent resin containing no ultraviolet light absorber.
3. The phosphorescent article according to claim 1, wherein said second transparent resin layer is provided in a part thereof which is underlain by said phosphorescent layer with a projecting part so formed as to protrude from a surface thereof.
4. The phosphorescent article according to claim 1, 2 or 3, further comprising a surface layer superposed on said second transparent resin layer and adapted to conceal a surface part of said second transparent resin layer other than a surface part which is underlain by said phosphorescent layer.
5. The phosphorescent article according to claim 1, 2 or 3, wherein the thickness of said first transparent resin layer is in the range of from 50 to 100 µ m, the thickness of said phosphorescent layer is in the range of from 50 to 250 µ m, and the thickness of said second transparent resin layer is in the range of from 100 to 400 µ m.
6. The phosphorescent article according to claim 1, 2 or 3, wherein said phosphorescent layer is formed of a synthetic resin containing SrAl2O4.
7. The phosphorescent article according to claim 6, wherein the content of SrAl2O4 in said phosphorescent layer is in the range of from 70 to 85% by weight.
8. The phosphorescent article according to claim 1, 2 or 3, wherein each of said first and second transparent resin layers is formed of a resin selected from the group consisting of a polyurethane, a polycarbonate, an acrylic resin, a polyvinyl chloride, and a polyester.
9. The phosphorescent article according to claim 1, 2 or 3, wherein said first and second transparent resin layers are formed of a substantially same synthetic resin.
10. The phosphorescent article according to claim 1, 2 or 3, wherein said supporting layer contains a white pigment.
11. The phosphorescent article according to claim 10, wherein said white pigment is a titanium white.
12. The phosphorescent article according to claim l, 2 or 3, wherein said supporting layer is formed of any one of a nonwoven fabric, a felt, a cloth, a synthetic resin sheet, and a metal sheet.
13. The phosphorescent article according to claim 1, 2 or 3, further comprising an adhesive layer and a release layer sequentially superposed on a surface of said supporting layer opposite to a surface thereof contiguous to said first transparent resin layer.