JP3081667B2 - High-brightness reflective sheet having luminous properties and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-luminance reflective sheet having a luminous property and a method of manufacturing the same, and more particularly, to a road sign, a guide sign, a safety guidance display panel, clothing, or other display or decoration. The present invention relates to a luminous retro-reflective high-brightness reflection sheet used in the present invention.

[0002]

2. Description of the Related Art Conventionally, as means for ensuring visibility in a dark place, a retroreflective material for reliably retroreflecting light in the direction of light source when a light projector to be used as a light source exists is used. When there is no light projector to be used as a light source, an apparatus using a luminous pigment having a property of absorbing and accumulating light and gradually emitting and emitting the light in a dark place has been used. However, the retroreflective sheet has a drawback that its presence cannot be visually recognized without a light source to be projected. On the other hand, a luminous film can be visually recognized after turning off the light even without a light source, and its direction can be determined in a dark space. It is suitable for displaying hazardous areas and preventing disasters. There was a drawback that there was no longer. Further, when a light source to be projected is present, the visibility is much lower than the visibility of the retroreflective sheet. Therefore, it has been desired to develop a device that always improves visibility in a dark place regardless of the presence or absence of a light source. In consideration of such points, a retroreflective sheet having a light storing property in which the above-mentioned disadvantages are improved is disclosed in, for example, JP-A-60-20550.
A reflection sheet as disclosed in Japanese Patent Publication No. 1 (1999) has been proposed. This is because the reflection layer 300 is formed of a resin containing a colorant and a reflection agent on the surface of the sheet-like material, and then the luminous substance 100 and the transparent sphere 200 are formed on the reflection layer 300.
The basic configuration is that a bead layer 400 is formed of a resin containing (FIG. 9), and the following two types, which are conventionally known as a form of a reflection sheet, are applied to this configuration. First, the upper part of the glass beads is exposed on the surface of the fixing layer, and the resin layer for fixing the glass beads contains a reflective substance such as aluminum powder and pearl pigment,
Alternatively, it is an exposure lens type that retroreflects light by a method of performing metal deposition on the lower hemisphere of the glass beads. The second one is an encapsulated lens type in which the disadvantage of the exposed lens type, that is, the problem of losing reflection performance when wet with water, is improved. This reflective sheet has a feature that glass beads are sealed in a resin, and it can be processed using a transparent color to produce color during the day and night, and it can retain its reflectivity even when wet with water. there were. JP-A-60-2
055 0 reflecting sheet having a luminous listed in 1 JP was such 2 format.

[0003]

However, the condition necessary for maintaining the reflection performance of the reflection sheet is that the incident light transmitted through each layer from the surface to the glass beads is reflected by the reflection layer and is reflected as a reflected light parallel to the incident light. The most important point is how to return efficiently. On the other hand, since the luminous pigment is opaque, there is a serious problem that light transmission is hindered. The exposed lens type is limited to the glass bead fixing layer of the surface layer, and the encapsulated lens type is limited to the same glass bead fixing layer as the intermediate layer. This is because the inclusion of the luminous pigment in other layers impairs the light transmission, significantly reduces the retroreflective performance, and makes it impossible to exhibit the original performance of the reflective sheet. As described above, the reflection sheet described in the above publication also contains a luminous pigment in the glass bead fixing layer.
It was inevitable that opaque phosphorescent pigments would enter above and below the glass beads. Therefore, the light transmittance is reduced and the retroreflection performance is significantly lost. Further, since the reflecting mirror is a pearl pigment, the reflecting efficiency is inferior to that of metal vapor deposition, and a satisfactory level of light storage and reflection intensity cannot be obtained. An object of the present invention is to solve the above problems.

[0004]

According to a first aspect of the present invention, a plurality of transparent spheres 2, a transparent fixing layer 4 for holding the plurality of transparent spheres 2, and a transparent fixing layer 4 disposed on the surface of the fixing layer 4 are provided. It has a transparent cover film 1 covering the plurality of transparent spheres 2 and a luminous luminous substance layer 10 capable of storing received light and emitting light even when the surroundings are darkened. Take. On the surface of the substantially lower hemisphere of the transparent sphere 2, there is provided a reflection layer 3 for reflecting light having entered the sphere from the substantially upper hemisphere to the outside of the sphere. It is possible to hold the lower hemisphere of the transparent sphere 2 substantially in an array. Further, an appropriate number of transparent spheres 2
A partitioning line section 40 is formed to partition the portion where is disposed with the other portion where the transparent sphere 2 is disposed. The dividing line portion 40 is formed of the transparent sphere 2
And has no reflective layer 3 and is joined to an appropriate position on the back surface of the cover film 1 to hold the cover film 1 and transmit light entering from the surface of the cover film 1 to the back surface of the fixing layer 4. The light-storing luminescent material layer 10 includes the fixed layer 4
It is formed on the back surface, and stores at least the light transmitted from the surface of the fixing layer 4 through the inside of the dividing line portion 40, and at least stores the light stored when the surroundings become dark.
From the surface of the fixing layer 4. In the method according to the second aspect of the present invention, first, a sheet-shaped fixing layer 4 is formed from a transparent material. The lower hemisphere of a plurality of transparent spheres 2 in which metal has been deposited on the lower hemisphere is buried in the surface of the fixing layer 4, and the surface of the fixing layer 4 is covered with the transparent cover film 1. Then, by performing heat embossing from the back surface of the fixing layer 4, the transparent spheres 2 on the surface side of the fixing layer 4 are appropriately pushed away, so that the dividing line portions 40 are raised between the transparent spheres 2 and the tops of the dividing line portions 40. all SANYO performing joining between the rear surface of the cover film 1, depending on which
It is assumed that the demarcation line portion does not have the transparent sphere and the reflection layer.
And a layer 1 containing a luminous substance on the back surface of the fixing layer 4.
0 is formed. The partition line portion 40 is a central portion of the raised portion of the fixing layer 4 caused by the heat embossing.

[0005]

According to the first aspect of the present invention, the luminous substance layer 10 can reliably absorb and emit light from the partitioning line portion 40 of the fixed layer 4 as a light passage therefrom. The reflection layer 3 does not block the path of light to be absorbed and emitted. This is because the transparent sphere 2 is rejected in the partitioning line portion 40 formed in the transparent fixed layer 4, and there is no obstacle that obstructs the progress of light. Therefore, the part responsible for reflection and the part responsible for storing light have their own functions without affecting each other. In addition, the second
According to the invention, when the partitioning line portion 40 is raised on the surface side of the fixing layer 4 by performing the heat embossing from the back surface of the fixing layer 4, the embossing pressure and the deformation of the fixing layer 4
The transparent spheres 2 of the fixed layer 4 are separated from the demarcation line portions 40 which are the centers of the raised portions.
Is formed and pushed to both sides of the demarcation line portion 40. As a result, the interior of the demarcation line portion 40 becomes a transparent sphere 2 or any other portion that does not obstruct the progress of light. At this time, at the same time, the top of the partition line portion 40, which is the center of the raised portion, is heated by the hot emboss and is fixed to the back surface of the cover film 1.
The layer 10 containing a luminous substance is formed on the back surface of the fixed layer 4, so that the absorption and emission of light due to luminescence can be reliably performed inside the partition line portion 40 as a light path. A luminance reflection sheet can now be provided.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. One embodiment of the manufacturing process of the high-brightness sheet according to the present invention will be described in order with reference to FIGS. 1 to 7.

First, as a pre-process, as shown in FIG. 1, a plurality of transparent glass spheres 2 are buried in a plane on the surface of a glass sphere temporary fixing layer 7 laminated on a separately prepared polyester film 8. More specifically, the polyethylene laminated film (the glass sphere fixing layer 7 and the polyester film 8) is heated and softened, and the glass spheres 2 are embedded. The glass sphere 2 has a particle size of about 5 to 300 μm.
m, and are fine particles having a refractive index of about 1.8 to 2.1.
Particularly preferable as the glass sphere 2 is about 1.9 to 1.95.
(Especially preferred are 1.92 to 1.93) and have a particle size of about 20 to 90 μm (especially preferred are 40 to 80 μm).
m).

Next, a metal reflecting film 3 is deposited on the hemispherical surface of the glass sphere 2 exposed from the surface of the glass sphere temporary fixing layer 7.
This vapor deposition is performed on the entire surface of the glass ball temporary fixing layer 7. When the glass spheres 2 to be described later are transferred to the support resin sheet 4, the glass spheres 2 on the surface of the glass sphere temporary fixing layer 7 are transferred.
The metal reflective film 3 deposited on the other portion remains on the surface of the glass ball temporary fixing layer 7 as it is, and only the metal reflective film 3 deposited on the hemispherical surface of the glass ball 2 is transferred to the supporting resin sheet 4 together with the glass ball 2. It is moved. As the reflective film 3,
An aluminum reflective film is preferable, and the present invention can be practiced even if it is formed of another metal.

In the main process of the present invention, first, a transparent supporting resin sheet 4 having a constant thickness of about 10 to 300 μm shown in the upper part of FIG. 2 is prepared. It is desirable that the support resin sheet 4 has a total light transmittance of about 30% or more.

A preferred example of the material forming the supporting resin sheet 4 will be described. As a basic composition, a resin composition comprising an ester urethane resin (50 parts by weight), MEK (20 parts by weight), and DMF (30 parts by weight) is used, and a supporting resin sheet is formed into a film having a thickness of 60 μm by a casting method. 4 was formed. The urethane resin has a 100% modulus of 70 kg / cm ² , a tensile strength of 580 kg / cm ² and an elongation of 700%. Again casty
The production of the support resin sheet 4 by the BR> method was specifically performed as follows. That is, cast on a polyester film 6 using a caster, and at 70 ° C. for 10 minutes,
Subsequently, hot-air drying is performed at 100 ° C. for 20 minutes to form a film having a dry thickness of 60 μm. Next, the glass spheres 2 are converted from the glass sphere temporary fixing layer 7 formed by the above-described method to the sheet-like body 4.
Transferred to Further, as another preferred example of the material forming the supporting resin sheet 4, the basic composition thereof is as follows.
Using a resin composition comprising an acrylic copolymer (20 parts by weight) composed of MMA / EA, toluene (75 parts by weight), and a polyester plasticizer (5 parts by weight), a film having a thickness of 60 μm is formed by a casting method. There is something. In this case as well, the resin composition was cast on a polyester film using a caster,
Then, hot air drying is performed at 10 ° C. for 10 minutes and then at 100 ° C. for 20 minutes to form a film having a dry film thickness of 60 μm. Then, the glass spheres 2 are removed from the glass sphere temporary fixing layer 7 formed by the method described above.
Was transferred to the sheet 4.

As shown in FIG. 2, the supporting resin sheet 4 as described above is placed along the surface of the glass ball temporary fixing layer 7. Then, as shown in FIG. 3, the supporting resin sheet 4 is pressed against the surface of the glass ball temporary fixing layer 7. This pressing is performed so that the hemispherical surface of the glass sphere 2 on which the metal reflection film 3 is deposited is embedded in the supporting resin sheet 4. As a means for this pressing, a method of passing through a heated roll having a roll surface temperature of 150 ° C. is suitable.

Next, the glass ball temporary fixing layer 7 is peeled off together with the polyester film 8 from the surface of the supporting resin sheet 4 (FIG. 4). At this time, the glass spheres 2 remain on the surface of the support resin sheet 4 and are held in a state where the hemispheres are buried by the support resin sheet 4. FIG. 5 shows the supporting resin sheet 4 in a state where the glass spheres 2 are held after peeling.

The transparent film 1 is covered on the surface of the supporting resin sheet 4 formed as shown in FIG. This film 1
Is preferably a uniaxially stretched acrylic film, and if necessary, other materials may be used. Specifically, in addition to the above, a film having good transparency such as a polyester resin, a polyacryl resin, a polyalkyd resin, a polyurethane resin, a polyvinyl chloride resin, a polycarbonate resin, a fluorine resin, and an acrylic silicone resin is used as the material of the film 1. Can be used. In addition, by employing a thermoplastic resin, the thermal fusion with the supporting resin sheet 4 can be favorably performed. A thermosetting resin or a resin having low heat-sealing suitability can be used as the film 1 without any practical problem by adopting a laminated structure with a thermoplastic resin on a surface requiring heat-sealing suitability. is there. The production of the film 1 can be performed even if it is performed by employing a known technique such as an extrusion method, a solvent casting method, and a calendar method. Also, for the resin as the material of the above-described film 1,
It is effective to use an ultraviolet absorber or an antioxidant in combination. One of the preferable examples of the film 1 is specifically described below. Basically, vinyl chloride resin (15 parts by weight), ethylene / vinyl ester resin (3 parts by weight), polyester plasticizer (2 parts by weight), tetrahydrofuran (80 parts by weight) and is formed as a film having a thickness of 40 μm by a casting method. A specific example of the production of the film 1 by the casting method will be described. In this case, the above resin composition (forming the film 1) is cast on a polyester film (not shown) using a caster. min by intends row hot air drying, it is possible to produce the film 1.

From the back side polyester side of the support resin sheet 4 having the above-mentioned film 1 disposed on the front side, thermocompression molding is carried out with a patterned embossing roll 9. This is because, as shown in FIG.
This is done by pressing to about 170 ° C. (for 15% of the surface) and pressing the embossing roll 9 at a speed of about 1 m / min. After hot embossing, the polyester film 6 is peeled off.

At the time of the hot embossing, the top of the raised portion 5 protruding from the front surface side of the supporting resin sheet 4 is pressed against the back surface of the film 1. When the embossing roll 9 presses the supporting resin sheet 4 and lifts the raised portion 5 in this manner, the raised portion 5
Inside, the glass ball 2 is shifted to both sides from the center of the raised portion 5 by the pressing force, and the glass ball 2 does not exist in the central portion 40. Therefore, in the central portion 40, from the front surface to the back surface of the supporting resin sheet 4, there is no obstruction,
Light can travel freely.

The above-mentioned raised portion 5 is formed on the surface of the supporting resin sheet 4 as shown in FIG.
The surface of the supporting resin sheet 4 on which the plurality of glass spheres 2 are provided is defined by defining 0 as a dividing line. The ridge 5
The present invention is not limited to those arranged in a lattice as shown in FIG. 8, and the present invention can be implemented even if the surface of the support resin sheet 4 is partitioned into another shape. It is effective if the above-mentioned pressure-bonded area (total area) of the raised portion 5 is formed so as to occupy about 15 to 55% on the surface of the support resin sheet 4. However, if it exceeds 45%, the deviation of the glass sphere 2 becomes worse, and the rise of the phosphorescence luminance value becomes extremely low. Therefore, the upper limit is around 45 to 50%.

A layer 10 having a luminous luminescent substance is formed on the back surface of the supporting resin sheet 4 having undergone the above steps (FIG. 7).
This forming method may be a method in which a sheet having a luminous substance is bonded to the back surface of the support resin sheet 4 or a resin layer having a luminous substance is laminated on the back surface of the support resin sheet 4. May be formed. The formation of the light-storing luminescent material layer 10 will be described in detail. The components of the basic composition are polycarbonate urethane resin (11 parts by weight), DMF (11 parts by weight), toluene (7 parts by weight), and a light-storing pigment (Germany). Permlight Co., Ltd., average particle size 35 μm: 71 parts by weight). This resin composition was cast using a caster, and 7
Hot air drying was performed at 0 ° C. for 10 minutes and subsequently at 100 ° C. for 20 minutes, and a film having a dry film thickness of 90 μm was laminated. Next, an acrylic white pressure-sensitive adhesive 60 mixed with titanium dioxide was added to the luminous luminescent material layer 10 to a dry film thickness of 30 μm.
And dried with hot air at 100 ° C. for 5 minutes, and then bonded to a white soft vinyl chloride film 90 having a thickness of 70 μm. Finally, the polyester film adhering to the surface layer side is peeled off. Subsequently, the release paper 70
Acrylic pressure-sensitive adhesive 6 on top of dry film thickness of 30 μm
1 and dried with hot air at 100 ° C. for 5 minutes and bonded to the film to complete a high-brightness reflective sheet having a luminous property. As another method of forming the above light-storing luminescent substance, the above-described phosphorescent luminescent material cast using a caster on a polyester film, subjected to hot air drying for 20 minutes at 100 ° C. followed by 10 minutes at 70 ° C. After producing a luminous luminous substance layer having a dry film thickness of 90 μm, an acrylic pressure-sensitive adhesive mixed with titanium dioxide is applied so that the dry film thickness becomes 30 μm, followed by 2 minutes at 70 ° C. and then at 100 ° C. Perform hot air drying for 5 minutes. Then, it is bonded to a white vinyl chloride film having a thickness of 70 μm. Subsequently, the polyester film adhering to one side of the film having the luminous light-emitting substance was peeled off, and then an acrylic pressure-sensitive adhesive was applied so as to have a dry film thickness of 40 μm on the surface exposed by the peeling, and the above-described production was performed. It is also possible to fabricate a high-brightness reflective sheet having a luminous property by laminating with a film that controls reflection. There is no problem in the case where the luminous luminescent material layer 10 is formed by laminating on the supporting resin sheet 4, but in the case of forming the luminous luminescent material layer 10 on the supporting resin sheet 4 by laminating, There is a possibility that an air layer may be formed due to unevenness of the back surface of the support resin sheet 4 caused by embossing. However, by successively pressing with a roll, the phosphorescent luminescent material layer 10 is formed in the state shown in FIG. Strictly speaking, in the case of this lamination
Adhesive layer between the slaughter light-emitting material layer 10 and the supporting resin sheet 4 is interposed, since the adhesive layer is to fill the depressions caused by embossing, livestock light-emitting material layer 10 itself, need not have a recess with a corresponding convex portion of the embossing, as shown in FIG. 7 (i.e. livestock light-emitting material layer 10
Has a substantially constant thickness in each part like the other layers on the back surface).

Referring to the sheet shown in FIG. 10, a comparative example of the sheet with the embodiment of the sheet according to the present invention will be described below. First, the above-mentioned sheet serving as a reference is composed of an oil-free alkyd resin (1
00 parts by weight), butylated melamine resin (20 parts by weight),
It is a resin composition comprising a curing accelerator (1 part by weight). This resin composition is applied on a polyester film (not shown) so as to have a dry film thickness of 40 μm, and heated at 140 ° C. for 5 minutes to form a surface layer film 101. The oil-free alkyd resin has a solid content of 50%,
It is appropriate to use xylene as the solvent. The butylated melamine resin preferably has a solid content of 60% and employs xylene or butanol as a solvent. Further, the curing accelerator having an acid value of 400 is suitable. Next, a resin composition for the glass ball fixing layer 401 is applied on the surface film 101 so as to have a dry film thickness of 50% of the diameter of the glass ball 201, and dried at normal temperature to evaporate the solvent. After that, the glass balls 201 were embedded, and further dried at 140 ° C. for 5 minutes. Incidentally, the glass sphere 201 has a refractive index of 2.2, which is mainly composed of titanium oxide.
3. High refractive glass having a particle diameter of 67 to 73 μm was used.
The above-mentioned resin composition for the glass ball fixing layer 401 is basically composed of an oil-free alkyd resin (100 parts by weight), a butylated melamine resin (10 parts by weight), and a curing accelerator (0.5 part).
Parts by weight) and a luminous pigment (65 parts by weight). This oil-free alkyd resin has a solid content of 50
%, Xylene is suitably used as a solvent. The butylated melamine resin has a solid content of 60%, and suitably employs xylene or butanol as a solvent. Further, the curing accelerator has an acid value of 40.
A value of 0 is appropriate. Further, the above-mentioned luminous pigment is preferably manufactured by Permalite Co., Germany and has an average particle size of 20 μm. Next, the resin composition of the focal layer film 310 was applied on the glass sphere 201 so as to have a dry film thickness of 16 μm, dried at 100 ° C. for 10 minutes, and further dried by heating at 140 ° C. for 10 minutes. The basic composition of the resin composition of the focal layer film 310 is composed of a hydroxyl group-containing ester type urethane resin (100 parts by weight) and a butylated melamine resin (10 parts by weight). This hydroxyl group-containing ester type urethane resin has a solid content of 25%, and suitably employs DMF, xylene, MEK or toluene as a solvent. As the metal reflection layer 301,
A retroreflective sheet having a luminous pigment was prepared by using aluminum to adhere to the focal layer film 310 by a vacuum evaporation method so as to have a thickness of 500 °. An acrylic pressure-sensitive adhesive is applied to the surface of the metal layer of the retroreflective sheet thus obtained and dried to form a pressure-sensitive adhesive layer 6 having a thickness of about 35 μm.
No. 00 was further formed, and a release paper 700 coated with silicon was bonded to the surface of the pressure-sensitive adhesive layer 600 to obtain a final object. Table 1 shows comparison data between the sheet serving as the comparison reference and each example of the present invention.

[Table 1] As shown in Table 1, of the embodiments of the present invention, the ratio of the area (total area) in which the protrusions 5 are pressed against the film 1 occupies the surface of the supporting resin sheet 4 (in Table 1, the transparent continuous pressure bonding is performed). The ratios of 15% (sample 1), 30% (sample 2), 45% (sample 3) and 55% (sample 4) were used as comparative samples. The measurement of the reflection intensity in Table 1 is based on J
The measurement of phosphorescent luminance complies with JIS Z 9100, and the measurement of phosphorescence luminance complies with JIS Z 9100.

[0019]

According to the first invention of the present application, a cover sheet 1 for preventing intrusion of water droplets in a high-brightness reflection sheet.
The use of the partitioning line portion 40 that adheres to the fixing layer 4 makes it possible to secure the reflection efficiency without impairing the light storage property, and to secure the high light storage property without impairing the reflection efficiency. Became possible. Further, by implementing the second invention of the present application, it has become possible to provide a high-brightness reflection sheet that achieves both the above-described high reflection efficiency and high light storage properties.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of the vicinity of a glass bulb 2 that undergoes a pre-process according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view showing a state in which fixing of the glass ball 2 to the supporting resin sheet 4 in the above embodiment of the present invention is started.

FIG. 3 is a schematic sectional view showing a state in which the glass spheres 2 of the above embodiment of the present invention are fixed to the supporting resin sheet 4;

FIG. 4 is a schematic cross-sectional view showing a state in which the fixing of the glass ball 2 to the supporting resin sheet 4 in the above embodiment of the present invention is completed.

FIG. 5 is a schematic cross-sectional view showing the supporting resin sheet 4 after the fixing of the glass sphere 2 according to the embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view showing a fixing state of the cover film 1 to the supporting resin sheet 4 of the above embodiment of the present invention.

FIG. 7 is a schematic sectional view showing a finished product of a high-brightness reflective sheet having a luminous property according to one embodiment of the present invention.

FIG. 8 is a schematic plan view of the luminous high-brightness reflective sheet of the present invention.

FIG. 9 is a schematic cross-sectional view of a conventional retroreflective sheet having a light storing property.

FIG. 10 is a schematic cross-sectional view of a retroreflective sheet having a light storing property as a comparative example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Surface film 2 Glass sphere 3 Metal reflection film 4 Supporting resin sheet 5 Raised part 6 Polyester film 10 Layer containing luminous substance 40 Central part

Claims (2)

(57) [Claims] 1. A plurality of transparent spheres, a fixing layer holding the plurality of transparent spheres, a transparent cover film disposed on the surface of the fixing layer to cover the plurality of transparent spheres, A light-storing light-emitting substance layer capable of emitting light when the storage periphery becomes dark; and the light that has entered the sphere from the substantially upper hemisphere outside the sphere is provided on the substantially lower hemisphere surface of the transparent sphere. A reflective layer that reflects light toward the fixing layer; the fixing layer is transparent in itself and can arrange the plurality of transparent spheres in a plane to hold substantially the lower hemisphere of each transparent sphere. Further, the fixing layer is formed with a dividing line portion that divides a portion where an appropriate number of transparent spheres are disposed from other transparent sphere disposing portions, and the dividing line portion includes a transparent sphere and a reflective layer . Without holding the cover film, it is joined to an appropriate position on the back side of the cover film to hold the cover film. The light that has entered from the film surface is transmitted to the back surface of the fixed layer, and the luminous luminescent material layer is formed on the back surface of the fixed layer, and has been transmitted from the surface of the fixed layer at least in the partition line portion. A high-brightness reflective sheet having a luminous property, capable of storing light and releasing the stored light at least when the surroundings become dark from the partition line portion to the outside of the fixed layer surface. 2. A sheet-shaped fixing layer made of a transparent material.
A metal is deposited on the surface of this transparent fixed layer, approximately in the lower hemisphere.
Embedded in the lower hemisphere of a plurality of transparent spheres, and covered with a transparent cover film on the surface side of such a fixed layer.
By performing heat embossing from the back side of the fixing layer,
Push the transparent sphere on the front side appropriately and partition between these transparent spheres
The line portion is raised, and the top of the division line portion and the cover
Join the back of the filmThereby, the lane marking part
Has no transparent sphere and reflective layer,  Further, a layer containing a luminous luminescent substance is formed on the back of the fixed layer
High-brightness reflective sheet having luminous properties
Manufacturing method.