JPS62124935A - Beam accumulating iris film - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an iris film provided with a phosphorescent pigment layer. More specifically, the present invention relates to a phosphorescent iris film that can make an iris color appear by emitting light from a phosphorescent pigment layer even when no light shines on it.

[Prior Art] Various types of iris films have been known in which iris colors are created by providing an interference thin film on the surface of a molded product such as a film. This is an application of the principle that when light rays interfere with each other with a phase difference, the human eye perceives it as an iris color.

[Problems to be Solved by the Invention] However, the above-mentioned iris film shows the iris color while the surface of the film is exposed to light, but when the light is no longer exposed due to natural light or artificial lighting disappearing, etc. Naturally, the light rays will not be incident on the film surface, and therefore no iris color will appear due to interference of the light rays.

In view of the above-mentioned points, it is an object of the present invention to provide a phosphorescent iris film that can maintain the iris color for a considerable period of time even when no light shines on it.

[Means for solving the problems] The present invention comprises at least an iris layer and a phosphorescent pigment layer,
The present invention relates to a phosphorescent iris film characterized in that both of these layers are provided in the order of an iris layer and a phosphorescent pigment layer from the viewing side.

[Function] In the present invention, since the phosphorescent pigment layer is provided behind the iris layer when viewed from the viewing side, even if the light does not shine, the light will still be emitted from the phosphorescent pigment layer. The iris color appears in the same way as when the eyes are closed.

[Example] Next, the luminous iris film of the present invention will be described based on the drawings.

1 to 4 are schematic illustrations showing different embodiments of the luminescent iris film of the present invention.

In FIG. 1, (A) is a luminescent iris film,
It is composed of an iris layer (1), an adhesive layer (2), a resin coating layer (3) containing a luminescent pigment, and a flexible support (4).

For the iris layer (1), for example, (1) a metal oxide such as a halide, oxide, or sulfide is formed on the film surface by vapor deposition or chemical reaction to form an interference thin film corresponding to the optical thickness; 0) The film surface is coated with a transparent resin having a different refractive index from that of the film, forming a resin interference thin film corresponding to the optical thickness; and 0) The film surface has a different refractive index. A multilayer resin interference thin film consisting of several to hundreds of layers by alternately laminating two types of transparent resins can be used.

The multilayer resin interference thin film includes one in which polyethylene-vinyl acetate copolymer and polystyrene are alternately laminated, one in which polyester and polymethyl methacrylate are alternately laminated, and the thickness thereof is about 10 to 50μ.

The luminescent pigment layer (3) is a resin coating layer containing a luminescent pigment. Luminous pigments are inorganic or organic pigments that emit fluorescence or phosphorescence, such as Zn5-Cu and Ca5-
Examples include those of the old principal component system.

Specifically, Y-1o (phosphorescent pigment manufactured by Nippon Fluorescent Chemical Co., Ltd.)
, Lum1lux N' 5000RO (manufactured by 101 companies), etc. The resin is not particularly limited, and for example, nitrified cotton, urethane, urea, melamine, acrylic, alkyd, and epoxy resins can be used as appropriate. From the viewpoint of supplying sufficient light to the iris layer (1), the luminescent pigment layer (3) has a luminescent pigment content of 10 to 70% (
% by weight, hereinafter the same), and its thickness is 5 to 100μ
It is preferable to set it as approximately.

The adhesive layer (2) is not particularly limited as long as it has transparency, and for example, a urethane-based adhesive can be used as appropriate.

The flexible support (4) includes a synthetic resin film (for example, polyester film, polypropylene film, polyamide film, polyvinyl chloride film, polystyrene, polyethylene, etc.) with a thickness of about 5 to 100 μm;
Japanese paper for gold and silver thread, papers, etc. are used.

A protective layer such as a resin coating layer may be appropriately provided on the surface of the iris layer (1).

To manufacture the luminous iris film shown in FIG.
A flexible support (4) is coated with a resin solution containing an appropriate luminescent pigment to form a luminescent pigment layer (3). Then, 1) is attached to the surface of the obtained luminescent pigment layer (3) with an iris layer via an adhesive layer (2).

As shown in FIG. 2, the adhesive layer (2) is not particularly provided, and a phosphorescent pigment layer (3) having an adhesive function is used to bond the flexible support (4) and the iris layer (1). The phosphorescent iris film (A) may be formed by bonding the phosphorescent pigment layer (3) with the phosphorescent pigment layer (3) having adhesive properties.

If the iris layer (1) is a thin interference film formed on a support such as the above-mentioned film and has sufficient strength, the flexible support (4) may not be used. Good too. In that case, for example, a one-ply structure may be used in which the phosphorescent pigment layer (3) is formed directly on the iris layer (1) and a protective coating layer is provided on that surface.

Further, as shown in FIG. 3, a combination consisting of an iris layer (1), a phosphorescent pigment layer (3), and a flexible support (4) is bonded to each other by bonding the flexible supports (4) to each other. A film provided with an iris layer (1) may also be constructed.

Furthermore, as shown in Figure 4, in order to provide strength,
A combination of a luminescent pigment layer (3) and a flexible support (4) may be provided such that the luminescent pigment layers (3) are placed back to back.

The phosphorescent iris film (A) of the present invention may be used as it is in film form, or may be slit and used as flat foil thread, or the thread form may be further shredded into powder or particulate form. You may use it as a glitter.

The phosphorescent iris film (A) of the present invention is suitable for use in stage costumes, exhibition decorations, night signs, labels, toys, etc. by utilizing the characteristic that the iris color appears for a while even when light is no longer shining on it. used for.

Next, the luminescent iris film of the present invention will be explained with reference to Examples, but the present invention is not limited to these Examples.

Example 1 Takenate D-1 < 13 (incyanate manufactured by Takeda Pharmaceutical Company Limited) 5.36%, Takelac U on polyethylene terephthalate (PUT) film (thickness 12μ)
-27 (Polyester polyol manufactured by Takero 14-Hin Kogyo ■)
17.12%, ethyl acetate 25.813%, butyl acetate 17.20%, cyclohexanone 8.60%, Y-1o
(Luminescent pigment manufactured by Nippon Fluorescent Chemical Co., Ltd.> 21.88%, G-
20 (phosphorescent pigment manufactured by Nippon Fluorochemical Co., Ltd.) 4.0% was applied by reverse coating to a thickness of 20μ, and the resulting product was dried at 170°C in a drying oven.
A phosphorescent pigment layer was formed on the film.

Next, 45% Takelac A-606 (polyester polyol manufactured by Takeda Pharmaceutical Company Oki), 5% Takenate A-10 (isocyanate manufactured by Takeda Pharmaceutical Company Ltd.), and 45% ethyl acetate.
%, 5.0 g/ba (dry) of a necking agent solution consisting of 5% methyl ethyl ketone was applied onto the phosphorescent pigment layer, and Aurora Film #008 (sold by Edka Co., Ltd.) was laminated alternately with polyester and polymethyl methacrylate. Then, polymethyl methacrylate was provided as a protective layer on the front and back surfaces to give a total thickness of 18 μm).

The resulting phosphorescent iris film was extremely beautiful in that the color tone varied depending on the viewing angle when it was exposed to light, but the iris color remained visible for about an hour even after the light was removed. I put it out.

Example 2 36% Takelac A-808 (polyester polyol manufactured by Takeda Pharmaceutical Co., Ltd.) and Takenate A-10 on a polyethylene terephthalate (PET) film (thickness 12μ)
(Isocyanate manufactured by Takeda Pharmaceutical Company ■) 4%, ethyl acetate 40%, Y-10 (phosphorescent pigment manufactured by Nippon Fluorescent Chemical ■) 17
%, G-20 (phosphorescent pigment manufactured by Nippon Fluorochemical Co., Ltd.) 3% at 15 g/rr? Apply and Aurora Film #
005 (sold by Edka Co., Ltd.) was laminated alternately with polyester and polymethyl methacrylate, and polymethyl methacrylate was provided as a protective layer on the front and back surfaces to give a total thickness of 19 μm. and 40℃
The mixture was incubated at a constant temperature for 2 days in a bath.

The obtained luminescent iris film exhibited properties similar to those of Example 1.

[Effects] As explained below, in the present invention, since the phosphorescent pigment layer is provided behind the iris layer when viewed from the viewing side, it can be used not only when the light is shining on it, but also when the light is no longer shining on it. As light is emitted from the phosphorescent pigment layer for a while,
The iris color appears and becomes very beautiful. and,
When using this property for stage costumes, exhibition decorations, etc.
It has the effect of giving a vivid impression to the viewer.

[Brief explanation of drawings]

The first to fourth diagrams are schematic explanatory diagrams showing different embodiments of the luminescent iris film of the present invention. (Main symbols in the drawings) (A): Luminescent iris film (1): Iris layer (3): Luminescent pigment layer Figure 3

Claims (1)

[Claims] 1. A phosphorescent iris film comprising at least an iris layer and a phosphorescent pigment layer, wherein both layers are provided in the order of the iris layer and the phosphorescent pigment layer from the viewing side.