JP5590445B2 - Manufacturing method of sign board - Google Patents

Description

The present invention relates to a method of manufacturing a sign board used for signs such as evacuation guidance, indoor and outdoor guidance, and more particularly to a method of manufacturing a sign board useful as a sign for a road spot without an outdoor light source.

Conventionally, the thing of the following content is known as a luminous sign board for outdoor use. (Patent Document 1)
Conventional phosphorescent sign boards for outdoor use have a problem that when the phosphorescent material is in contact with water, the phosphorescent material is oxidized and the luminous luminance of the phosphorescent material is lowered.
Therefore, a phosphorescent plate containing a phosphorescent material having afterglow is provided on the substrate, a protective plate is provided on the front side of the phosphorescent plate, and the phosphorescent plate and the protective plate are interposed between the phosphorescent plate and the protective plate. In addition, an adhesive portion is provided around the phosphorescent plate and provided between the substrate and the protective plate so as to bond the substrate and the protective plate.

And since this adhesion part is the circumference of the phosphorescent plate and is provided between the substrate and the protective plate, and the substrate and the protective plate are bonded so as to surround the phosphorescent plate, the phosphorescent plate is There is no portion exposed between the substrate and the protective plate.
Therefore, even if the phosphorescent plate is thick and the space between the substrate and the protective plate is open, the substrate and the protective plate are bonded together to maintain the shape as a sign plate, and moisture intrusion to the phosphorescent plate can be achieved. A phosphorescent marking plate and a manufacturing method that can be used for outdoor use by preventing the phosphorescent material from deteriorating without reaching.

However, since this manufacturing method requires processing under reduced pressure, there is a drawback that a special apparatus is required.
Moreover, although the phosphorescent plate is made into a sheet shape with a resin and an ink agent, it is difficult to process the phosphorescent material particle size of 100 to 200 μm into a plate shape with the resin and the ink agent.
In addition, since the adhesive part does not cover the entire surface of the substrate, there is room for moisture to penetrate into the interface between the substrate and the phosphorescent plate, and it is fixed without loosening when the phosphorescent marker plate is attached to the column. It was difficult to do.

  Furthermore, since the marking surface including the design is insufficiently protected, the marking surface including the design is apt to be contaminated with dust in the air at an early stage.

JP 2006-162799 A

The present invention has been made in view of the circumstances as described above, and even in an environment exposed to outdoor wind and rain, moisture does not penetrate into the phosphorescent layer, and nighttime visibility is maintained over a long period of time. An object of the present invention is to provide a method for manufacturing a sign plate that can be manufactured at low cost because it maintains a good phosphorescent sign function and is easily and reliably attached and does not require special manufacturing equipment.

In the manufacturing method of the sign board according to the present invention to achieve the above object, a step of placing a transparent layer with the design on the hot platen,
Arranging an inner mold and an outer mold on the transparent layer;
Pouring a thermosetting resin material kneaded with a phosphorescent material into the inner mold;
After the phosphorescent material is settled and separated into a phosphorescent layer and a thermosetting resin layer, a substrate having a white reflective layer formed on one surface is arranged such that the white reflective layer is disposed on the phosphorescent layer side. A step of arranging between the phosphorescent layer and the thermosetting resin layer;
Removing the inner mold and forming a coating layer by pouring a part of the thermosetting resin layer into the void from which the inner mold has been removed;
Removing the outer mold after the thermosetting resin layer is cured;
And a finishing step of cutting unnecessary portions after taking out the product from the hot platen.

The present invention has the following effects.
According to the sign plate of the first aspect of the present invention, a sign plate that exhibits a phosphorescent sign function with good nighttime visibility over a long period of time can be produced at low cost without requiring special production equipment.
According to the manufacturing method of the sign board of the invention described in claim 2 , the substrate can be easily disposed between the phosphorescent layer and the thermosetting resin layer.

According to the manufacturing method of the sign plate of the invention described in claim 3, it is possible to obtain a sign plate with good durability.

Sectional drawing of the sign board which concerns on this invention. The fragmentary sectional view of the state which used the marker board of FIG. 1 as a point marker. Sectional drawing which shows the state which inject | poured material into the metal mold | die arrange | positioned on the transparent film arrange | positioned on a heating board. Sectional drawing which shows the state which the material of FIG. 3 isolate | separated into the luminous layer and the thermosetting resin layer. Sectional drawing which shows the state by which the white coating substrate was arrange | positioned between the luminous layer and the thermosetting resin layer. Sectional drawing of the state which removed the inner mold | type of FIG. FIG. 7 is a cross-sectional view showing a state in which a part of the thermosetting resin layer of FIG. Sectional drawing which removed the outer mold | type of FIG. Sectional drawing which removed the heat disc of FIG.

Hereinafter, the best mode for carrying out the present invention will be described.
First, the form of this invention is demonstrated based on FIG.
The sign board 10 according to the present invention includes a white reflective layer 2 provided on one surface 11 of the substrate 1, a phosphorescent layer 3 in which a phosphorescent material is present in a thermosetting resin provided on the white reflective layer 2 side, The phosphorescent layer 3 is composed of a design 4 existing on the side opposite to the white reflective layer 2 and a transparent layer 5 covering the surface of the phosphorescent layer 3 including the design 4.

Each side surface of the substrate 1, the white reflective layer 2, and the phosphorescent layer 3 and the entire surface of the other surface 12 of the substrate 1 are covered with a thermosetting resin coating layer 6.
In the present embodiment, the substrate 1 is an aluminum plate, but may be an iron plate, an acrylic plate, or a stainless plate subjected to rust prevention.
The substrate 1 has a plurality of through holes 13 formed around it.
The luminous layer 3 and the covering layer 6 communicate with each other through the through hole 13.
Thereby, the integration of the substrate 1, the phosphorescent layer 3 and the coating layer 6 can be performed more reliably.
In addition, a white paint is applied to one surface 11 of the substrate 1 to form a white reflective layer 2.

Moreover, as a thermosetting resin, a polyurethane resin, an epoxy resin, a polyester resin, an acrylic resin, etc. can be used, but a polyurethane resin is preferable.
The urethane material used in the present embodiment is a cast urethane material, and a main material having a reactive group (—NCO) called a prepolymer and a curing agent (amine system) react to become polyurethane. . Among these, a transparent non-yellowing thermosetting urethane material is particularly preferable.

Moreover, as a luminous material used for the luminous layer 3, although strontium oxide, an aluminum oxide, rare earth oxide etc. can be used, for example, it is preferable that it is an aluminate type luminous material with a particle size of 100-800 micrometers.
And it is desirable that the phosphorescent material is present on the surface of the phosphorescent layer 3 at 1,000 g / square meter or more.
This makes it possible to maintain sufficient emission luminance during the night and to maintain 15 mcd / square meter or more in 12 hours after sunset.

  The transparent layer 5 is a photocatalytic layer (on the outside of a fluorine-based transparent film such as THV (tetrafluoroethylene / hexafluoropropylene / vinylidene fluoride copolymer)) or a transparent non-yellowing urethane film (50 to 300 μm). Titanium oxide 0.1 to 0.3 μm), undercoat layer (protection of weatherproof transparent film from photocatalyst and thickness of 1 to 3 μm with adhesive of photocatalyst layer and weatherable transparent film), coated inside (phosphorescent layer 3 It is a film having the design 4 printed on the side and having high transparency (also transmits light in the UV region), waterproofness, and weather resistance.

For this reason, the problem that the surface of the transparent layer 5 is contaminated by dust in the atmosphere can be effectively avoided.
The sign board 10 having such a configuration is used as a point mark as shown in FIG. 2, for example.
And since the sign board 10 is fixed with the attachment bracket 81 in the form in which the coating layer 6 is in contact with the support pillar 8, the attachment of the sign board 10 to the support pillar 8 can be performed easily and reliably.
That is, even if the sign plate 10 is excessively tightened and fixed, the cover layer 6 serves as a cushioning material, so that the sign plate 10 is not damaged.

Next, a method for manufacturing the sign board 10 according to the present invention will be described with reference to FIGS.
First, as shown in FIG. 3, a transparent layer 5 of a weather-resistant transparent film is disposed on a hot platen 9 heated to 90 to 140 ° C. with the surface provided with the design 4 facing up.
Next, an inner mold 91 and an outer mold 92 are disposed on the transparent layer 5.
The inner mold 91 and the outer mold 92 have a rectangular shape.

Next, in this inner mold 91, 100 parts of a transparent non-yellowing thermosetting urethane prepolymer, 10 parts of an amine-based curing agent, 150 parts of a phosphorescent material (aluminic acid-based phosphorescent material having a particle size of 100 to 300 μm), a reaction accelerator 0 .02 parts of mixed and stirred thermosetting resin material 31 is poured.
Next, as shown in FIG. 4, when 2 to 3 minutes have elapsed after injection, the thermosetting resin material 31 settles the phosphorescent material having a large specific gravity to form the phosphorescent layer 3, and thermosets hardly contain the phosphorescent material. The resin layer 61 is separated.

At this stage, as shown in FIG. 5, the aluminum substrate 1 having the white reflective layer 2 coated with the white paint formed on one surface 11 is placed between the phosphorescent layer 3 and the thermosetting resin layer 61. To place.
Since this substrate 1 has a through hole 13 through which a thermosetting resin 31 that is a transparent non-yellowing thermosetting urethane prepolymer can pass, the substrate 1 is placed on the thermosetting resin material 31 and a load is applied. By hanging, the substrate 1 is disposed so as to remain between the phosphorescent layer 3 and the thermosetting resin layer 61.

  This is because the transparent non-yellowing thermosetting urethane prepolymer of the phosphorescent layer 3 close to the hot platen 9 is cured, but the thermosetting resin layer 61 also serves as a heat insulating material. This is because the heat of the hot platen 9 is difficult to be transmitted and the curing does not proceed.

Next, as shown in FIG. 6, when the inner mold 91 is removed, as shown in FIG. 7, a part of the uncured thermosetting resin layer 61 flows into the void 911 from which the inner mold 91 has been removed. 6 is formed.
At this time, since the phosphorescent layer 3 is hardened, a part of the phosphorescent layer 3 does not flow into the empty space 911.

  Next, as shown in FIG. 8, after the thermosetting resin layer 61 is cured, the outer mold 92 is removed.

Finally, as shown in FIG. 9, after 20 to 30 minutes have elapsed, the product is taken out from the hot platen 9 and then finished by cutting unnecessary portions, whereby the sign board 10 shown in FIG. 1 is obtained. .
In addition, sufficient mechanical strength can be given to a thermosetting resin material by heat-processing a product for 12 hours at 80 degreeC after a finishing process.

  The above-described invention can be used for a gaze guidance mark, a guide plate, a signboard, and the like.

DESCRIPTION OF SYMBOLS 1 Board | substrate 2 White reflection layer 3 Phosphorescent layer 4 Design 5 Transparent layer 6 Covering layer 7 Antifouling layer 8 Support | pillar 9 Heating board 10 Marking board 11 One surface 12 The other surface 13 Through-hole 31 Thermosetting resin material 61 Thermosetting Resin layer 91 Inner mold 92 Outer mold

Claims (3)

  A step of disposing a transparent layer (5) on the hot platen (9) with the surface subjected to the design (4) facing upward, and an inner mold (91) and an outer mold (92) on the transparent layer (5) And a step of pouring a thermosetting resin material (31) in which a phosphorescent agent (32) is kneaded into the inner mold (91),
After the phosphorescent agent settles and separates into the phosphorescent layer (3) and the thermosetting resin layer (61), the substrate (1) on which the white reflective layer (2) is formed on one surface (11), A step of arranging between the phosphorescent layer (3) and the thermosetting resin layer (61) such that a white reflective layer (2) is arranged on the phosphorescent layer (3) side;
Removing the inner mold (91) and forming a coating layer (6) by pouring a part of the thermosetting resin layer (61) into the void (911) from which the inner mold (91) has been removed. When,
Removing the outer mold (92) after the thermosetting resin layer (61) is cured;
A marking plate manufacturing method comprising: a finishing step of cutting an unnecessary portion after taking out a product from the hot platen (9). The sign board manufacturing method according to claim 1, wherein a through hole (13) through which the thermosetting resin (31) can pass is formed in the substrate (1). The product is subjected to heat treatment after the finishing step.
Or a method for producing a sign board according to 2.

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