JP2011164559A - Light-accumulating guidance sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems, wherein a floor-type light-accumulating evacuation guidance material is very expensive, because the material is made of tiles or reinforced glass and that the material is not popular for commercial buildings because the color of a light-accumulating pigment does not match the surroundings. <P>SOLUTION: A light-accumulating guidance sheet is provided, produced in steps of: preparing a plastic sheet with a hard coat having an adhesive applied on one surface of the sheet; preparing another plastic sheet having an adhesive and a release sheet on one surface; forming an image by inkjet printing on the second plastic sheet; forming a light-accumulating mark by screen printing; and bonding the two sheets. The sheet obtained is low in cost and can be used for a long time, even if it is installed on a floor of a crowded place. As the mark is present with the inkjet image, the mark is unnoticeable, and the sheet matches the surroundings. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a phosphorescent induction sheet.

  Guide lights and evacuation lights indicating the locations of emergency exits and emergency stairs are installed in subway stations, underground malls, and other residential facilities. These are lit even during a power failure, but usually 20 minutes, at most one hour. Moreover, since electrical wiring is required, installation is difficult and expensive. In addition, because it is installed near the ceiling, it seems to be easy to find the display at first glance, but smoke is generated at the time of disasters such as earthquakes and fires, and people actually walk down and crawl down, so it is actually difficult to see, There are disadvantages such as.

For this reason, there is an evacuation guidance display body that uses a phosphorescent material that can store light at the time of lighting, uses a phosphorescent agent that emits light at the time of extinction at the time of power failure, and can be easily installed in various places.
The Tokyo Metropolitan Government also stipulated the obligation to install evacuation guidance indicators using phosphorescent materials in underground station buildings several years ago.
Now it is almost complete. However, for flooring, it is made of tile or tempered glass and is extremely expensive. In addition, construction was difficult and expensive. There is also a phosphorescent induction sign for PVC sheets and PET sheets, but because the plastic itself is a surface, it has poor wear resistance and is not suitable for flooring.

The use of evacuation guidance indicators using phosphorescent agents is not widespread in general buildings. The reason is
1) High price
2) The figure of the sign, the color of the phosphorescent agent (light yellow) does not match the surroundings,
3) The sheet is relatively inexpensive, but performance is not satisfactory for floor use.
4) It can be considered that it is not mandatory.

  In order to solve such a problem, Patent Document 1 discloses a display member having a phosphorescent function and a manufacturing method thereof. Patent Document 1 discloses a step of preparing a pressure-sensitive adhesive sheet in which one surface side of a transparent sheet is an adhesion layer, and a release sheet superimposed on the adhesive layer, along a predetermined region representing an image or characters on the release sheet of the pressure-sensitive adhesive sheet. Cutting the cut sheet, peeling the release sheet of the cut section to expose the adhesive, and depositing the large phosphorescent agent particles in layers on the exposed adhesive layer, and peeling and bonding the remaining release sheet The manufacturing method of the display member which has a luminous agent characterized by including the process of exposing a layer and sticking to a base sheet through this contact bonding layer, and the display member are described.

  Further, Patent Document 2 describes an invention in which an ink mixed with a phosphorescent agent is applied on a transparent sheet.

  Further, Patent Document 3 describes an invention in which a mark is formed by performing back surface printing by screen printing using phosphorescent ink on a back surface of an uneven transparent sheet, and further a double-sided tape is attached.

  JP 2004-45823 A   JP-A-2005-213433   JP2007-322585A

  However, in the method such as the invention described in Patent Document 1, the phosphorescent agent is sprinkled on the adhesive layer in the step of attaching the phosphorescent agent to the cut portion where the release sheet is peeled off to form a region representing an image or the like. The region representing the image can be formed only by pressing the phosphorescent agent to the adhesive layer. For this reason, there is a drawback in that productivity is limited.

  In the method such as the invention described in Patent Document 2, printing is performed on the surface of the transparent sheet with ink. However, under the condition that the printing is used for a long time, the printed layer is caused by secular change or friction with respect to the printed layer. Peeling and damage are likely to occur, and corona discharge is performed to prevent this, but there is a disadvantage that the cost increases.

  Furthermore, in the method such as the invention described in Patent Document 3, the surface irregular resin is expensive due to the special specification, and the normal plastic layer is the surface, so it is easily scratched. There is a drawback that mud accumulates and dirt is generated.

As a result of studying the above in view of the above, the present inventor has completed the invention of a material that is inexpensive and can be used for flooring and has excellent matching properties with the surroundings.
That is, the present invention
(1) A transparent hard coat layer on the front side, a transparent plastic sheet with an adhesive layer on the back side, mark formation by screen printing using inkjet printing and phosphorescent ink on the front side, an adhesive layer on the back side, and A phosphorescent induction sheet comprising a white base plastic sheet with a release sheet,
(2) Transparent plastic sheet with transparent hard coat layer on the front side, back side printing technique on the back side, image formation by ink jet printing, and mark formation by screen printing using phosphorescent ink, and adhesive layer on the front side A phosphorescent induction sheet comprising a white base double-sided plastic sheet with an adhesive layer and a release sheet on the back side,
(3) A waterproof plastic coat further coated on a transparent plastic sheet having a transparent hard coat layer on the front surface, a back surface printing technique on the back surface, image formation by inkjet printing, and mark formation by screen printing using phosphorescent ink A phosphorescent induction sheet comprising the formation of an adhesive white base adhesive layer and the addition of a release sheet;
(4) A phosphorescent induction sheet in which the hard coat layer is an acrylic, silane, or ethylene-fluoroethylene resin,
(5) A phosphorescent induction sheet in which the plastic sheet is polyethylene terephthalate, polycarbonate, olefin, or vinyl chloride,
Is to provide.

  According to the present invention, by providing a hard coat layer on the surface of a transparent PET sheet, scratch characteristics are superior to conventional products, and by using inkjet printing and phosphorescent screen printing on the back surface, In addition, since a PET sheet with a hard coat is sold in large quantities, the price is low, and as a result, an induction sheet that is cheaper than the conventional product and has excellent characteristics can be provided.

  Sectional drawing of the sheet | seat shown in Embodiment 1 of this invention   Sectional drawing of the sheet | seat shown in Embodiment 2 of this invention   Sectional drawing of the sheet | seat shown in Embodiment 3 of this invention   (1) Visual view shown in Embodiments 1 to 3 of the present invention in a bright place and (2) a dark place

Form for practicing the invention

  The phosphorescent induction sheet of the present invention is characterized in that a plastic sheet with a hard coat is used, screen printing and inkjet printing are used in combination, and a floor adhesive sheet is used.

などがある。
本発明では、タカハラコーポレーション製ビバシートを使用しているが、この限りではない。
このシートの材質はＵＶ硬化型ハードコート付きＰＥＴシートである。以下の特性を有す
キズ防止性 表面の鉛筆硬度、４Ｈ
耐汚染性 ハトのフンを２カ月放置、洗浄後残りなし
耐滑り性 ＣＳＲ法でドライ状態：０．９１３、ウェット状態：０． ４１６
耐薬品性 酸、アルカリ、ケトン溶剤 等に付着後、変化なし
帯電防止性 摩擦帯電圧、綿：３０００Ｖ
抗菌性 ＪＩＳ Ｚ ２８０１に準じて大腸菌の生菌数は１０以下
これらは、ハードコート層の特徴であり、プラスチック層のみでは得られない。また、紫外線（ＵＶ−Ａ）にたいする透過率も約８５％あり、蓄光材にとっても適する。(PET sheet with hard coat layer)
A PET sheet with a hard coat printed by inkjet is used in large quantities as a floor sheet in stations, roads, large buildings, and the like. Examples of the material include acrylic resin, silane resin, and acrylic silane resin. As a product,

and so on.
In the present invention, the Takara Corporation Viva sheet is used, but this is not a limitation.
The material of this sheet is a PET sheet with a UV curable hard coat. It has the following characteristics Scratch prevention Surface pencil hardness, 4H
Contamination resistance Pigeon dung left for 2 months, no residue after washing Slip resistance Dry state: 0.913, wet state: 0. 416
Chemical resistance No change after adhering to acid, alkali, ketone solvent, etc. Antistatic property Frictional voltage, Cotton: 3000V
Antibacterial In accordance with JIS Z 2801, the number of viable Escherichia coli is 10 or less. These are the characteristics of the hard coat layer and cannot be obtained only by the plastic layer. Moreover, the transmittance for ultraviolet rays (UV-A) is about 85%, which is suitable for a phosphorescent material.

(Phosphorescent material)
The phosphorescent material refers to a material having the property of absorbing and storing light energy such as sunlight and fluorescent lamps, gradually releasing the energy after light shielding, and emitting light. As a material, there is a type in which zinc sulfide (ZnS: Cu) and strontium aluminate are added as main components and a rare earth activator is added and fired. The after material is strong emission and long afterglow. As for the particle size, the larger the particle size, the better the luminous characteristics, but it is usually about 20 to 100 μm. There are two types of emission colors, yellow-green emission and blue-green emission. Yellow-green emission has a strong initial luminance, and blue-green emission has a long afterglow time. Since all products have an excitation peak of 365 nm ultraviolet light, a light source that emits ultraviolet light such as sunlight or a fluorescent lamp is required.

  Hereinafter, embodiments of each invention will be described. Note that the present invention is not limited to these embodiments, and can be implemented in various modes without departing from the spirit of the present invention.

  The relationship between the following embodiment and claims and figures is as follows. The first embodiment will mainly describe Claim 2 and FIG. The second embodiment will mainly describe Claim 3 and FIG. The third embodiment will mainly describe Claim 4 and FIG.

Embodiment 1

  FIG. 1 shows a cross section of the configuration of this embodiment. As shown in FIG. 1, 1 is a hard coat layer, 2 is a PET layer, and 3 is an adhesive layer. 1-3 is sold as a PET sheet with a hard coat layer. It is used for indoor and outdoor floors and can be used for quite a long time even in places with many streets. The hard coat layer is 1 μm to 50 μm, preferably 5 μm to 10 μm. If it is too thin, it will be shaved and will not function, and if it is too thick, it will crack. The thickness of the PET layer is 10 μm to 200 μm, preferably 50 μm to 100 μm. The film thickness is 50 to 400 μm, preferably 100 to 300 μm by screen printing using phosphorescent ink. If it is too thin, the afterglow brightness will be weak, and if it is too thick, the unevenness of the sheet will be large. The phosphorescent mark means an arrow, a guide sign, or a character. 6 to 8 are white-based PET sheets which are usually commercially available. Reference numeral 6 denotes a PET layer having a thickness of 10 μm to 200 μm, preferably 50 μm to 100 μm. 7 is an adhesive layer for flooring. 8 is a release paper, which may be plastic or sticky paper. FIG. 4 shows the visibility in the bright place of the sheet produced in Embodiment 1 and the visibility when suddenly it becomes a dark place. In the dark place, the 10 white ink portion and the image forming portion are blackened by ink jet printing, and only the 11 phosphorescent ink portion shines, and the direction of evacuation guidance is known.

The luminance measurement is shown as a specific example.
Transparent PET sheet: 50 μm thickness, white PET sheet: 50 μm thickness, screen printing (100 mesh) twice coating: lower layer about 100 μm thickness, phosphorescent pigment: Nemoto Special Chemical GCC-300C, upper layer about 100 μm thickness, phosphorescent pigment: Nemoto Special Chemical: GLL-300M is used.
The method is based on JIS Z 9107.

Embodiment 2

  FIG. 2 shows a cross section of the configuration in the present embodiment. As shown in FIG. 2, 1 indicates a hard coat layer and 2 indicates a PET layer. It is sold as a PET sheet with a hard coat layer without an adhesive at 1-2. The hard coat layer is 1 μm to 50 μm, preferably 5 μm to 10 μm. If it is too thin, it will be shaved and will not function, and if it is too thick, it will crack. The thickness of the PET layer is 10 μm to 200 μm, preferably 50 μm to 100 μm. If it is too thin, the durability will be poor, and if it is too thick, it cannot be bent and cannot be made into a roll. In the step of printing on the back side of this sheet, 4 is screen printing using phosphorescent ink, and the film thickness is 50 to 400 μm, preferably 100 to 300 μm. If it is too thin, the afterglow brightness will be weak, and if it is too thick, the unevenness of the sheet will be large. The phosphorescent mark means an arrow, a guide sign, or a character. 5 performs inkjet printing using an ink suitable for normal PET. The image can be a picture, photo, logo, or text. 3 and 6 to 8 are white-sided PET double-sided sheets which are usually commercially available. 3 is an adhesive layer, 6 is a PET layer, and the thickness is 10 μm to 200 μm, preferably 50 μm to 100 μm. 7 is an adhesive layer for flooring. 8 is a release paper, which may be plastic or sticky paper. FIG. 4 shows the visibility in the bright place of the sheet produced in the second embodiment, and the visibility when suddenly it becomes a dark place. In the dark place, the 10 white ink portion and the image forming portion are blackened by ink jet printing, and only the 11 phosphorescent ink portion shines, and the direction of evacuation guidance is known.

The luminance measurement is shown as a specific example.
Transparent PET sheet: 50 μm thick, white PET double-sided sheet: 50 μm thick, screen printing (100 mesh) twice painted: lower layer about 100 μm thick, luminous pigment: Nemoto Special Chemical GCC-300C, upper layer about 100 μm thick, luminous pigment : Nemoto Special Chemical: GLL-300M is used.
The method is based on JIS Z 9107.

Embodiment 3

  FIG. 3 shows a cross section of the configuration in the present embodiment. As shown in FIG. 3, 1 indicates a hard coat layer and 2 indicates a PET layer. It is sold as a PET sheet with a hard coat layer without an adhesive at 1-2. The hard coat layer is 1 μm to 50 μm, preferably 5 μm to 10 μm. If it is too thin, it will be shaved and will not function, and if it is too thick, it will crack. The thickness of the PET layer is 10 μm to 200 μm, preferably 50 μm to 100 μm. If it is too thin, the durability will be poor, and if it is too thick, it cannot be bent and cannot be made into a roll. In the step of printing on the back side of this sheet, 4 is screen printing using phosphorescent ink, and the film thickness is 50 to 400 μm, preferably 100 to 300 μm. If it is too thin, the afterglow brightness will be weak, and if it is too thick, the unevenness of the sheet will be large. The phosphorescent mark means an arrow, a guide sign diagram, or a character. 5 performs inkjet printing using an ink suitable for normal PET. An image means a picture, photo, logo, or text. 9 is a white adhesive layer, and the adhesive is printed on the entire surface after the steps 4 and 5. Since the film thickness is at a level that covers phosphorescent printing, 300 to 500 μm is preferable. There is a demand for waterproofness to prevent moisture absorption from the floor while having adhesiveness suitable for the floor. There are many commercially available adhesives for PET sheets having such properties. FIG. 4 shows the visibility in the bright place of the sheet produced in the third embodiment and the visibility when suddenly it becomes a dark place. In the dark place, the 10 white ink portion and the image forming portion are blackened by ink jet printing, and only the 11 phosphorescent ink portion shines, and the direction of evacuation guidance is known.

The luminance measurement is shown as a specific example.
Transparent PET sheet: 50 μm thick, screen printing (100 mesh) twice painted: lower layer about 100 μm thick, luminous pigment: GCC-300C made by Nemoto Special Chemical, upper layer about 100 μm thick, luminous pigment: Nemoto Special Chemical made: GLL- Use 300M.
The method is based on JIS Z 9107.

DESCRIPTION OF SYMBOLS 1 Transparent hard-coat layer 2 Transparent PET layer 3 Transparent adhesion layer 4 Luminous storage layer (mark formation)
5 Inkjet layer (image formation)
6 White base PET layer 7 Adhesive layer 8 Release sheet 9 White base adhesive 10 White ink 11 Phosphorescent ink 12 Image by inkjet printing

Claims (7)

A process of bonding a transparent plastic sheet with a transparent hard coat layer on the front side and a white plastic sheet on the back side,
In the meantime, the phosphorescent induction sheet having mark formation by screen printing using phosphorescent ink and image formation by ink jet printing. A transparent hard coat layer on the front side, a transparent plastic sheet with an adhesive layer on the back side,
On the front side, image formation by inkjet printing and mark formation by screen printing using phosphorescent ink, a white plastic sheet with an adhesive layer and a release sheet on the back side,
And the process of bonding two sheets together,
The phosphorescent induction sheet according to claim 1, comprising: Using a transparent hard coat layer on the front surface and a back surface printing technique on the back surface, image formation by inkjet printing, and mark formation by screen printing using phosphorescent ink, and
A white double-sided plastic sheet with an adhesive layer on the front side and an adhesive layer and release sheet on the back side;
And the process of bonding two sheets together,
The phosphorescent induction sheet according to claim 1, comprising: Using a transparent hard coat layer on the front surface and a back surface printing technique on the back side, image formation by inkjet printing, and mark formation by screen printing using phosphorescent ink,
Furthermore, a step of forming a waterproof white base adhesive layer to cover,
Furthermore, a process with a release sheet,
A phosphorescent induction sheet consisting of The phosphorescent induction sheet according to claim 1, wherein the transparent hard coat layer is an acrylic resin, a silane resin, or an acrylic silane resin, and has a surface hardness of 2H or more. The phosphorescent induction sheet according to claim 1, wherein the transparent plastic sheet and the white plastic sheet are polyethylene terephthalate, polycarbonate, olefin resin, or vinyl chloride. The phosphorescent induction sheet according to claim 1, wherein the phosphorescent material used for the phosphorescent ink is blue-green light emission (490 nm) or yellow-green light emission (530 nm).

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