KR200364377Y1 - Luminous sheet having fluorescent property - Google Patents

Abstract

The present invention relates to a photoluminescent light emitting sheet which is excellent in photoluminescence (light accumulation) performance and which can be printed by a solvent-type photorealistic output device. The present invention is a photoluminescent light emitting sheet comprising a printed layer 20, a photoluminescent light emitting layer 30 and the base layer 40, the base layer so that the photoluminescent light emitting layer 30 as close as possible to the artificial light source (7) It is provided on the lower surface of 40, and the lamination | stacking order provides the photoluminescent light emitting sheet which consists of the printing layer 20, the base material layer 40, and the photoluminescent light emitting layer 30 in order from the top. As for the base material layer 40, the upper PVC layer 41, the base sheet layer 42, and the lower PVC layer 43 are laminated | stacked and comprised usefully. According to the present invention, the photoluminescent light emitting layer 30 is formed on the lower surface of the base layer 40 so as to be as close as possible to the artificial light source 7 to improve the photoluminescence (accumulation of light) performance, excellent afterglow performance, and low power. Even if supplied, sufficient photoluminescence performance is exhibited. In addition, the upper surface of the base material layer 40 has the effect of enabling printing by a solvent-type real-world writer.

Description

Photoluminescent Luminescent Sheet {LUMINOUS SHEET HAVING FLUORESCENT PROPERTY}

The present invention relates to a photoluminescent light emitting sheet attached to an advertising structure in order to increase the advertising effect, more specifically, in coating and forming a photoluminescent light emitting layer on the base layer, so as to be close to an artificial light source (fluorescent lamp, light bulb, etc.). Formed on the lower surface (back side) of the base material layer, it exhibits excellent photoluminescence (light accumulation) performance even with a small amount of power, resulting in high afterglow luminance, and printing on the upper surface (surface) of the base material layer by a solvent-type photoelectric printer. A photoluminescent light emitting sheet is provided.

In general, an advertising structure has a built-in artificial light source (fluorescent lamp, light bulb, etc.) is installed inside, the surface is attached to the phosphorescent light emitting sheet to increase the advertising effect.

In the conventional photoluminescent light emitting sheet, the photoluminescent light emitting body is dispersed and mixed in a plastic resin and then compounded to produce a sheet using a extruder. A printed layer on which an advertisement (characters, graphics, etc.) was expressed was formed on the surface of the photoluminescent light emitting sheet. However, such a light emitting sheet has a problem in that its luminescent light emitter is dispersed in a plastic resin, and thus its afterglow luminance is weak compared to the content of the light emitting luminescent material, and the afterglow time is short.

Accordingly, in recent years, a photoluminescent layer is formed on the upper surface of the base material layer so as to have a high afterglow luminance to have a layer structure. For example, Korean Patent Application Publication No. 10-2000-0072880 discloses a tarpaulin sheet and a banner sheet for advertisement signage using a photoluminescent agent as a main component, and Korean Utility Model Registration No. 0318704 is provided with an advertisement and reflection function. A cover for building construction is presented. Here, a photoluminescent light emitting sheet having a layer structure is shown. This will be described with reference to FIG. 1.

1 is a cross-sectional view for explaining a photoluminescent light emitting sheet and a structure for advertising according to the prior art.

As shown in FIG. 1, the advertising structure 5 is typically framed by a plurality of panels 6, and then has a structure in which an artificial light source 7 such as a fluorescent lamp or a light bulb is embedded therein. A photoluminescent light emitting sheet 1 is attached to the outer surface. As shown, the conventional photoluminescent light emitting sheet 1 has a structure in which the printing layer 2, the photoluminescent light emitting layer 3, and the base material layer 4 are sequentially stacked from the top exposed to the outside air.

Specifically, the mixture of the photoluminescent light emitter and the binder is mixed on the upper surface of the base layer 4 to form a photoluminescent light emitting layer 3, and then, the upper surface of the photoluminescent light emitting layer 3 has a printed layer ( Prepared by forming 2). Korean Utility Model Registration No. 0318704 discloses a technique in which the base layer 4 is formed by coating both sides of polyolefin on the upper and lower portions of the fabric. This base layer 4 is attached to abut the panel 6 of the advertising structure 5. The photoluminescent illuminator has a property of naturally accumulating light when it accumulates light and becomes dark. Therefore, the photoluminescent light emitting sheet 1 is attached to the advertising structure 5 in which the artificial light source 7 is installed, accumulates the light from the artificial light source 7, and emits light when necessary (power cut off or at night) to print the layer. Emphasizes (2) clearly and raises advertising effect.

However, the photoluminescent light emitting sheet 1 according to the related art has a problem in that the photoluminescent performance (light accumulation performance) is deteriorated due to the lamination structure, and printing by a solvent type real-life output printer is impossible. This will be described in detail as follows.

First, since the photoluminescent layer 3 is formed to be close to the upper surface of the base layer 4, that is, the outside air, the light emitting layer 3 is far from the artificial light source 7, and thus there is a problem in that light accumulation rate (luminescent performance) is lowered. . In more detail, light emitted from the artificial light source 7 is blocked by the base layer 4 so that a small amount of light reaches the photoluminescent light emitting layer 3, so that the accumulation of light falls, which in turn leads to afterglow luminance and There is a problem that the afterglow time is reduced. In addition, in order to increase afterglow brightness and afterglow time, a problem arises in that a large amount of power must be supplied.

In addition, as described above, the printing layer 2 is formed on the upper surface of the photoluminescent light emitting layer 3, in which the output speed is faster and can be used for outdoor use compared to the aqueous real-time output device, and the output of a large size is possible. Printing with a solvent-type photorealistic writer was not possible. Specifically, in the case of printing with a solvent type photorealistic printer, the phenomenon that the photoluminescent layer 3 melts due to the solvent occurs, which makes it impossible to print using a solvent type photoelectric output machine. there was.

The present invention is to solve the problems described above, in forming the photoluminescent light emitting layer on the base layer, by forming on the lower surface of the base layer so as to be close to the artificial light source, excellent luminous performance (light accumulation) with a small power It is an object of the present invention to provide a photoluminescent light emitting sheet which has a surface area of the substrate layer and enables printing by a solvent-type photorealistic output device.

1 is a cross-sectional view for explaining a photoluminescent light emitting sheet and a structure for advertising according to the prior art.

2 is a cross-sectional view of a photoluminescent light emitting sheet according to the present invention.

3 is a cross-sectional view illustrating a state in which the photoluminescent light emitting sheet according to the present invention is attached to an advertisement structure.

Explanation of symbols on the main parts of the drawings

5: advertising structure 6: panel

7: artificial light source 10: photoluminescent light emitting sheet

20: printed layer 30: photoluminescent light emitting layer

40: base material layer 41: upper PVC layer

42: base sheet 43: lower PVC layer

In order to achieve the above object, the present invention provides a photoluminescent light emitting sheet for advertisement comprising a printing layer, a photoluminescent light emitting layer and a base layer,

The photoluminescent light emitting layer is formed on the lower surface of the base layer so as to be as close as possible to the artificial light source, thereby providing an advertising photoluminescent light emitting sheet comprising a printing layer, a base layer and a photoluminescent light emitting layer in order from the top.

In addition, the base layer is preferably configured by laminating an upper PVC layer, a base sheet layer and a lower PVC layer from the top.

Hereinafter, with reference to the accompanying drawings will be described the present invention in more detail.

Figure 2 illustrates a cross-sectional view of the photoluminescent light emitting sheet according to the present invention, Figure 3 is a cross-sectional view illustrating a state in which the photoluminescent light emitting sheet according to the present invention is attached to the advertising structure.

Referring to FIG. 2, the photoluminescent light emitting sheet 10 according to the present invention includes at least a printing layer 20, a base layer 40, and a photoluminescent light emitting layer 30. The photoluminescent layer 30 is formed on the bottom surface of the base layer 40. That is, the print layer 20 is formed on the upper surface of the substrate layer 40, and the photoluminescent light emitting layer 30 is formed on the lower surface of the substrate layer 40. In order from above to be exposed, it has a structure laminated | stacked in order of the printing layer 20, the base material layer 40, and the photoluminescent light emitting layer 30. FIG. In addition, a separate coating layer may be formed on the upper surface of the print layer 20 to protect the print layer 20.

3 illustrates a state in which the photoluminescent light emitting sheet 10 according to the present invention is attached to the advertising structure 5.

As shown in FIG. 3, the photoluminescent light emitting sheet 10 according to the present invention is attached to the panel 6 of the advertising structure 5 so that the photoluminescent light emitting layer 30 abuts. Therefore, the photoluminescent light emitting layer 30 and the artificial light source 7 have a distance as close as possible. Accordingly, the performance of photoluminescence (accumulation of light) is improved, which in turn improves afterglow luminance and afterglow time. In addition, as described above, the photoluminescent layer 30 and the artificial light source 7 have a close distance as much as possible, so that the accumulation rate of light is high, and sufficient light storage performance is provided even when a small amount of power is supplied.

The base layer 40 can be used as long as it has a supporting force and has a smooth surface for easy printing. The base layer 40 is preferably coated with a resin having a strong physical property to the solvent so that at least the surface on which the printing layer 20 is formed to be printed with a solvent type real-life writer. For example, a sheet commonly referred to as "flex" may be used as printing by a solvent-type real-time output printer is easy.

Specifically, the base layer 40 is formed by laminating and forming an upper PVC layer 41 and a lower PVC layer 43 on the upper and lower portions of the base sheet 42, in order from the top with the printed layer 20. The upper PVC layer 41, the base sheet 42 and the lower PVC layer 43 may be stacked in this order. Here, the base sheet 42 includes a woven fabric and a nonwoven fabric, and the upper PVC layer 41 and the lower PVC layer 43 are made of a vinyl chloride resin (PVC) composition to which a plasticizer, a heat stabilizer, and the like are added. The base layer 40 may be prepared by coating and curing the PVC sol on the base sheet 42 on the upper and lower portions, or by manufacturing a separately prepared PVC sheet laminated on the upper and lower portions of the base sheet 42. The base layer 40 is provided with an upper PVC layer 41 having a strong physical property to the solvent, it is easy to print by the solvent-type real-world output machine. Polyvinyl chloride resin (PVC) is not only good price and formability than other resins, but also has a strong property of being insoluble in solvents.

The printing layer 20 is formed on the upper surface of the base layer 40, that is, the surface opposite to the surface on which the photoluminescent light emitting layer 30 is formed. The printing layer 20 may be formed by an aqueous real output printer or a solvent type real output printer. Preferably, the printing layer 20 may have a high output speed and may be used for outdoor use, and a large size output may be performed. It is formed by a solvent-type real-time output device having the advantage of.

The photoluminescent light emitting layer 30 is not particularly limited, but may have a thickness of 50 μm to 5 mm, which is formed by coating a bottom surface of the base layer 40 with a mixture containing at least a photoluminescent light emitting body and a binder. In addition, an additive may be further contained in the mixture for forming the photoluminescent layer 30 as necessary. Specifically, the mixture may be composed of 1 to 40 parts by weight of the photoluminescent emitter, 55 to 98 parts by weight of the binder, and 0.1 to 10 parts by weight of the additive. In this case, the additive is a dispersing agent such as a stabilizer alkylol ammonium salt such as lead compound, organo-tins, tin meraptide, etc. in consideration of stability and workability and butyl methoxy It may be one or two or more selected from a sunscreen such as dibenzoyl methane (butyl methoxy dibenzoyl methane: BMDM).

The photoluminescent light emitting body may be used as long as it has a property of naturally accumulating light when needed to store light (power off or at night), and a conventionally used light emitting material may be used. Preferably, it is preferable to use a powdery inorganic substance represented by the following general formula. The photoluminescent emitter represented by the following formula has an advantage of excellent photoluminescence performance, afterglow luminance and afterglow time.

MEuAl ₂ O ₄ MEuOn (AlBQ) ₂ O ₃ ------------- (Formula)

(M is any one selected from strontium (Sr), calcium (Ca), magnesium (Mg) and barium (Ba), n is an integer of 1 to 9, Q is lanthanum (La), cerium (Ce) , Prasedium (Pr), Neodymium (Nd), Samarium (Sm), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Tolium (Tm), Ytterbium ( Yb), yttrium (Y), lutetium (Lu), manganese (Mn) and bismuth (Bi)

In addition, the binder may be used as long as it is a resin capable of bonding the photoluminescent particles to each other and giving adhesion to the base layer 40, and preferably an acrylic or polyester binder having excellent adhesion.

The photoluminescent light emitting sheet 10 according to the present invention is usefully applied for an advertising effect wherever there is an artificial light source 7 as well as outdoors and indoors. The photoluminescent layer 30 is provided to face the artificial light source 7. In addition, it may be in the form of a flexible sheet or a rigid panel according to the configuration of the base layer 40, it can be widely applied to signs, advertising structures, various interiors and ships, and road safety signs.

As described above, the present invention is formed on the lower surface of the base layer 40 so that the photoluminescent light emitting layer 30 is as close as possible to the artificial light source 7 to improve the photoluminescence (light accumulation) performance and to exhibit excellent afterglow performance. Has an effect. That is, as the light emitted from the artificial light source 7 has a distance as close as possible without being blocked by the base layer 40 as in the prior art, the accumulation of light is improved, which in turn improves afterglow brightness and afterglow time. .

In addition, since the photoluminescent layer 30 and the artificial light source 7 have a close distance as much as possible, the light accumulation efficiency is increased, thereby exhibiting sufficient photoluminescence performance even when a small amount of power is supplied. This is economical because it can reduce the amount of power supplied eventually.

In addition, the upper surface of the base material layer 40 has an effect of enabling printing by a solvent type real-life output machine. In this case, when the print layer 20 is formed by the solvent type real-time output device, the output speed is fast, and thus the cost can be reduced, and it can be used for outdoor use and the output of a large size is possible.

Claims (9)

In a photoluminescent light emitting sheet comprising a printed layer, a photoluminescent light emitting layer and a base layer, The photoluminescent light emitting layer 30 is formed on the bottom surface of the base layer 40 so as to be as close as possible to the artificial light source 7, and the stacking order is sequentially from the top of the printed layer 20, the base layer 40 and the photoluminescent light emitting layer. A photoluminescent light emitting sheet, characterized in that consisting of (30). The light emitting sheet of claim 1, wherein the base layer (40) is formed by laminating an upper PVC layer (41), a base sheet layer (42), and a lower PVC layer (43) in order from the top. The photoluminescent light emitting sheet according to claim 1, wherein the printed layer (20) is formed by a solvent type real-time output device. The photoluminescent light emitting sheet according to claim 1, wherein the photoluminescent light emitting layer (30) has a thickness of 50 µm to 5 mm. The photoluminescent light emitting sheet of claim 1, wherein the photoluminescent light emitting layer 30 is formed by coating a mixture consisting of 1 to 40 parts by weight of a photoluminescent emitter, 55 to 98 parts by weight of a binder, and 0.1 to 10 parts by weight of an additive. . The photoluminescent light emitting sheet according to claim 5, wherein the photoluminescent light emitting body is an inorganic material represented by the following chemical formula. MEuAl ₂ O ₄ MEuOn (AlBQ) ₂ O ₃ ------------- (Formula) (M is any one selected from strontium (Sr), calcium (Ca), magnesium (Mg) and barium (Ba), n is an integer of 1 to 9, Q is lanthanum (La), cerium (Ce) , Prasedium (Pr), Neodymium (Nd), Samarium (Sm), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Tolium (Tm), Ytterbium ( Yb), yttrium (Y), lutetium (Lu), manganese (Mn) and bismuth (Bi) The photoluminescent light emitting sheet according to claim 5, wherein the binder is an acrylic or polyester binder. The photoluminescent light emitting sheet according to claim 5, wherein the additive is one or two or more selected from a stabilizer, a dispersant, and a sunscreen agent. The method of claim 8, wherein the stabilizer is selected from lead compounds, organo-tins and tin meraptides, the dispersant is an alkylolammonium salt, and the sunscreen is butyl meth. Photoluminescent light emitting sheet, characterized in that butyl dimethoxyyl methane (butyl methoxy dibenzoylmethane: BMDM).