JP3086760U - Composite sheet material - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To provide a sheet that emits light by UV irradiation with a light diffusion property and a UV blocking property, so that the other side of the sheet is unclear and the indoor brightness is not changed. Provided is a composite sheet material that not only protects privacy but also eliminates the influence of transmitted UV light. A composite sheet material (1) comprising a UV blocking sheet having visible light transmission, a UV light emitting layer (3) formed on the sheet and emitting light by UV irradiation, and a light diffusing layer (4).

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative sheet which emits light by UV irradiation.

[0002]

2. Description of the Related Art When a sheet that emits light by UV irradiation is formed, for example, a base material that can transmit most light including UV is used.

[0003] For this reason, the other side of the sheet can be seen through, especially in the daytime, and the effect of privacy protection cannot be obtained by using the sheet alone.

[0004] In recent years, with the problem of the ozone hole, there is a growing tendency to be anxious even with slight UV light, and it is necessary for users to prevent irradiation of the human body with UV light, which is a light source. It is becoming important in eliminating psychological anxiety.

[0005]

[Problems to be solved by the invention] The invention of the present application provides a composite sheet material that can protect privacy regardless of day and night when using a sheet having a UV light emitting function, and can further block transmitted UV light. Is what you do.

[0006]

Means for Solving the Problems The invention of the present application is to provide a sheet that emits light by UV irradiation with a light diffusing property, so that when the sheet is affixed to a window glass, a door glass, or the like, the other side of the sheet can be used day or night. It is blurred and protects privacy without changing the brightness of the room.

[0007] The effect of light diffusion not only reduces the reflection of natural light and light from fluorescent lamps (anti-glare), but also provides a glass scattering prevention effect when a sheet is attached to a window glass or a door glass. can do.

[0008] Further, the present invention provides a composite sheet material capable of eliminating the influence of transmitted UV light by UV blocking characteristics.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The composite sheet material of the present invention comprises a base sheet, a UV light-emitting layer and a light diffusion layer, and is provided with an optional layer according to the application.

The UV light emitting layer used in the present invention can emit various colors by UV irradiation. This UV light emitting layer can be obtained by a forming method such as coating or sticking.

The UV blocking sheet having visible light transmittance used in the present invention is a sheet capable of blocking all or almost all of the incident UV light, and has a UV blocking effect on the base material itself. It can be obtained by, for example, giving a material having a UV-blocking effect to a substrate having no UV-blocking effect, such as a window glass or a door glass, to a substrate having no UV-blocking effect.

Further, the light diffusion layer used in the present invention diffuses or scatters the incident light, so that the opposite side of the sheet to which the sheet is attached becomes unclear, so that privacy can be protected day and night. The light diffusion layer can be obtained by a method of forming fine irregularities on the surface, a method of utilizing a difference in refractive index within the layer, or the like.

A description will be given below with reference to the drawings.

1 to 3 show a UV light emitting layer and a light diffusing layer formed on the same surface of a substrate sheet.

[0015] In this structure, when the composite sheet is irradiated with UV from the UV light emitting layer side, the UV light emitting layer emits light, and the opposite side of the sheet becomes unclear from the base sheet side, so that the other side of the sheet is difficult to see. In other words, privacy can be protected day and night.

Further, by imparting UV blocking properties to the base sheet, transmitted UV light can be blocked.

FIG. 4 shows a structure in which a UV light emitting layer and a light diffusing layer are formed on each surface of a substrate sheet.

In this structure, in addition to the effect of the composite sheet in which the UV light emitting layer and the light diffusing layer shown in FIGS. 1 to 3 are formed on the same surface of the base sheet, the light diffusing layer (the light source for emitting the UV light emitting layer) is used. On the opposite side, you can get a ground-glass feel.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the composite sheet material of the present invention will be described below.

A 100 μm-thick polyethylene terephthalate (PET) film having a UV blocking property is coated with a screen printing ink having a property of emitting light by UV by using a well-known screen printing method, and a UV light emitting layer is formed. Was formed.

100 parts by weight of the resin and 100 parts by weight of transparent glass beads and 5 parts by weight of a coloring pigment were added to form a composite sheet material on the upper surface of the UV light emitting layer formed by the above-mentioned coating method.

When the composite sheet material was subjected to UV irradiation from the UV light emitting layer side, the illuminance of the UV light emitting layer due to the UV irradiation did not change. In addition, when the light transmitted through the composite sheet material was measured using a spectrophotometer, the transmittance on the short wavelength side of 350 nm or less was almost 0%, and it was confirmed that the UV light contained in the irradiated light was removed. Was done.

Further, when this composite sheet material was adhered to door glass, the other side adhered by the light diffusing layer became unclear and privacy could be protected.

Further, by attaching the composite sheet material to the door glass, the effect of preventing the door glass from scattering was also obtained.

[0025]

[Effects of the Invention] The present invention forms a UV light-emitting layer and a light-diffusing layer on a UV-blocking sheet, so that when the light-emitting layer emits light by UV light, the amount of UV light applied to the human body is minimized or minimized. By making the sheets unclear, privacy can be protected both day and night.

[0026]

[Brief description of the drawings]

FIG. 1 shows the structure of the composite sheet material of the present invention.
4 is a partial sectional view of FIGS.

FIG. 2 shows the structure of the composite sheet material of the present invention.
4 is a partial sectional view of FIGS.

FIG. 3 shows the structure of the composite sheet material of the present invention.
4 is a partial sectional view of FIGS.

FIG. 4 shows the structure of the composite sheet material of the present invention.
4 is a partial sectional view of FIGS.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Composite sheet material 2 Base sheet 3 UV light emitting layer 4 Light diffusion layer

Claims (3)

[Utility model registration claims] 1. A composite sheet material comprising a UV blocking sheet having a visible light transmission property, a layer formed on the sheet, which emits light by UV irradiation (hereinafter, referred to as a UV light emitting layer), and a light diffusion layer. 2. The composite sheet material according to claim 1, wherein the light diffusion layer is colored. 3. The composite sheet material according to claim 1, wherein the UV blocking sheet having visible light transmittance does not have UV blocking properties.