JP6989107B2 - Signs and methods for forming signs - Google Patents

Description

The present invention relates to a label provided with a transparent aliphatic polyurea resin layer and a protected object, and a method for forming the label.

The polyurea resin is a synthetic resin having a urea bond, and is produced by colliding and mixing a polyisocyanate compound (main agent) and an amine compound (curing agent) having active hydrogen with a spray gun to cause a chemical reaction. Polyurea resin has high reactivity (ultra-fast curing) and tough physical properties (tear strength, tensile strength, elongation, chemical resistance, wear resistance, etc.), and is a coating material for ships, floors, ceilings, etc., Pentagon. It is used for explosion-proof measures.
Aromatic polyurea resin absorbs ultraviolet rays and changes its color from pale yellow to amber.Therefore, conventional polyurea resin can be applied to areas where there is no problem even if it changes color, or polyurea resin is made darker. After coloring, it was applied to the object so that the aesthetic appearance of the object to be applied was not spoiled.
Unlike aromatics, aliphatic polyurea resins (polyaspartic acid / polyurea) do not have UV absorption characteristics, so they do not turn yellow due to UV rays and maintain the color at the time of application for a long period of time. It has the characteristic of being able to do it.
Patent Document 1 describes a peeling prevention structure of an outer wall tile in which a transparent polyurea resin is applied to the surface of the outer wall tile of a building to form a transparent reinforcing layer. In Patent Document 1, the transparent and non-yellowing property of the aliphatic polyurea resin is utilized to protect the outer wall tile and maintain the design.

Japanese Unexamined Patent Publication No. 2016-030974

In Patent Document 1, in order to prevent the strength of the transparent reinforcing layer from decreasing even when exposed to ultraviolet rays for a long period of time, a light stabilizer and an ultraviolet absorber are mixed with a polyurea resin coating material, and further, the transparent reinforcing layer is provided. It is described that a transparent protective layer made of an acrylic silicon resin coating material in which a light stabilizer and an ultraviolet absorber are mixed is formed on the surface. That is, in the transparent reinforcing layer of Patent Document 1, avoidance of adverse effects due to ultraviolet rays is considered, but utilization of irradiated ultraviolet rays is not considered.
The present invention has been made in view of the above circumstances, and it is intended to achieve both protection from cracks, wear, peeling, destruction by impact, corrosion, etc. of the object to be protected by the polyurea resin, and utilization of the irradiated ultraviolet rays. With the goal.

In order to solve the above problems, labeling according to claim 1, a protected object, the surface of the protective object, design of drawn particular designed using luminescent material to excite to emit light by ultraviolet rays A transparent aliphatic substance formed on the intermediate layer containing the above layer and the surface layer of the intermediate layer, which protects the intermediate layer and the object to be protected so that the design can be visually recognized from the outside, and has a property of transmitting ultraviolet rays. It is characterized by comprising a polyurea resin layer.
Method for forming a label according to claim 2, the surface of the protected object, forming an intermediate layer comprising a design of the drawn particular designed using luminescent material to excite to emit light by ultraviolet rays, among intermediate A step of forming a transparent aliphatic polyurea resin layer having a property of transmitting the ultraviolet rays while protecting the intermediate layer and the object to be protected so that the design can be visually recognized from the outside on the surface layer of the layer. It is characterized by including.

According to the present invention, the luminescence material emits light when ultraviolet rays transmitted through the aliphatic polyurea resin excite the luminescence material, so that the object to be protected by the polyurea resin is prevented from cracking, abrasion, peeling, destruction by impact, corrosion, etc. It is possible to achieve both the protection of the surface and the improvement of visibility due to the irradiated ultraviolet rays.

It is sectional drawing which shows the protection structure which concerns on 1st Embodiment of invention. It is sectional drawing which shows the protection structure which concerns on the 2nd Embodiment of an invention. It is a schematic diagram which shows an example of the spraying apparatus which sprays a polyurea resin on an object.

Hereinafter, the present invention will be described in detail using the embodiments shown in the figure. However, unless there is a specific description, the components, types, combinations, shapes, relative arrangements, etc. described in this embodiment are merely explanatory examples, not the purpose of limiting the scope of the present invention to that alone. ..

[First Embodiment]
The first embodiment of the present invention will be described. FIG. 1 is a cross-sectional view showing a protective structure according to the first embodiment of the present invention.
The protective structure 1 according to the present embodiment is formed on the protected object 11, the intermediate layer 13 formed on the surface of the protected object 11, and the surface layer (upper layer) of the intermediate layer 13, so that the protected object 11 is formed. And a polyurea resin layer 15 which is transparent and has ultraviolet transparency as a protective layer for protecting the intermediate layer 13.

The object to be protected 11 may be any material as long as it can form the intermediate layer 13 and the polyurea resin layer 15 on the surface thereof, and may be, for example, concrete, metal, wood, stone, resin, a composite material thereof, or the like. Further, examples of the object to be protected formed from the above-mentioned base material include an outer wall of a building, a roof, a floor of a parking lot, an inner wall of a tunnel, a median strip, a truck body, a lighthouse, and the like. The surface of the object to be protected 11 is coated with a base (primer) as necessary before forming the intermediate layer 13.

The intermediate layer 13 is composed of a layer in which the surface of the object to be protected 11 is colored with a paint (colored layer), a layer in which a sheet-like medium is attached to the surface of the object to be protected 11 (sheet layer), and the like. The intermediate layer 13 may cover the entire surface of the object to be protected 11, or may cover only a part of the surface.
The intermediate layer 13 contains a photoluminescence material that is excited by the energy of ultraviolet rays transmitted through the polyurea resin layer 15 to radiate (emit) visible light. Here, the photoluminescence material may be either a fluorescent material that fluoresces or a phosphorescent material that phosphorescence. By including the photoluminescence material in the intermediate layer 13, the brilliance is improved and the visibility can be improved.

Since the intermediate layer 13 is visible from the outside through the transparent polyurea resin layer 15, a specific design can be given to the intermediate layer 13. For example, on the intermediate layer 13, a safety sign using characters, figures, symbols, colors and the like defined by JIS Z9101 (safety color and safety sign-general rules for designing industrial environment and guide safety sign) can be formed.
The intermediate layer 13 may include a portion made of a material other than the photoluminescence material. Further, a reconstitution material having both photoluminescence characteristics and optical characteristics different from photoluminescence may be used for the intermediate layer 13. For example, a composite material having both the optical characteristics of the photoluminescence material and the optical characteristics of the retroreflective body may be used for the intermediate layer 13 to further enhance the brilliance and visibility.

The polyurea resin layer 15 is composed of an aliphatic transparent polyurea resin (for example, polyaspartate polyurea resin). Since the aliphatic polyurea resin has a property of transmitting ultraviolet rays, it has a feature that there is no risk of yellowing due to ultraviolet rays. As an example of such a polyurea resin, SoloarMax manufactured by Rhino Lining Co., Ltd. in the United States can be mentioned.
By covering the object to be protected 11 and the intermediate layer 13 with the polyurea resin layer 15, cracks, wear, peeling, destruction due to impact, corrosion, etc. of the object to be protected 11 and the intermediate layer 13 can be prevented. Further, since the aliphatic polyurea resin layer 15 is transparent, the intermediate layer 13 and the surface of the protected object 11 not covered by the intermediate layer 13 can be visually recognized via the polyurea resin layer 15. Moreover, since it does not easily turn yellow, visibility can be maintained for a long period of time. Further, since the aliphatic polyurea resin layer 15 transmits ultraviolet rays, the photoluminescence material contained in the intermediate layer 13 can be made to emit light (fluorescence or phosphorescence) by the ultraviolet rays transmitted through the polyurea resin layer 15, and the intermediate layer is formed. The visibility of the design formed in 13 can be enhanced.

[Second embodiment]
A second embodiment of the present invention will be described. FIG. 2 is a cross-sectional view showing a protective structure according to a second embodiment of the present invention.
The protective structure 2 according to the present embodiment includes a protected object 11 and a protective layer 17 formed on the surface of the protected object 11 to protect the protected object. In the present embodiment, the protective layer 17 is characterized in that a transparent polyurea resin having ultraviolet light transmission is mixed with a luminescence material that is excited by ultraviolet rays and emits (emits) visible light. Hereinafter, the same parts as those of the first embodiment will be omitted as appropriate.

The protective layer 17 according to the present embodiment has the functions of both the intermediate layer 13 and the polyurea resin layer 15 shown in the first embodiment.
That is, by covering the protected object 11 with the protective layer 17 containing the polyurea resin, it is possible to prevent the protected object 11 from being cracked, worn, peeled, destroyed by impact, or the like. Further, since the aliphatic polyurea resin is transparent, the luminescence material contained in the protective layer 17 can be visually recognized from the outside, and since it does not easily yellow, the visibility can be maintained for a long period of time. Further, since the aliphatic polyurea resin transmits ultraviolet rays, the luminescence material in the protective layer 17 can be made to emit light (fluorescence or phosphorescence) by the ultraviolet rays transmitted through the polyurea resin, and the design formed by the protective layer 17 can be made to emit light (fluorescence or phosphorescence). Visibility can be improved.

[Spraying device / spraying method]
FIG. 3 is a schematic diagram showing an example of a spraying device that sprays a polyurea resin onto an object. Aliphatic polyurea resins are produced by chemically reacting an aliphatic polyisocyanate compound (main agent) and an aliphatic amine compound (hardener) having active hydrogen by colliding and mixing them with a spray gun. .. The spraying device 20 is a device in which a polyisocyanate compound and an amine compound are collision-mixed to form a mist and sprayed onto an object.

The spraying device 20 includes a first tank 21a containing a polyisocyanate compound, a second tank 21b containing an amine compound, a first pump 22a for delivering the compound from the first tank 21a, and a second pump for delivering the compound from the second tank 21b. 22b, a high-pressure metering pump 23 that applies sufficient pressure to a compound to deliver a predetermined amount, a heater 24 that heats the compound to be transported, a hose 25 with a heater that maintains the temperature of the compound, and a mist that collides and mixes both compounds. It is equipped with a spray gun 26 that ejects in a state. Further, the spraying device 20 also includes a reaction control device that controls the high-pressure metering pump 23 to change the mixing ratio of both compounds, and controls the heater to change the heating temperature and the like.
The polyisocyanate compound and the amine compound contained in the first tank 21a and the second tank 21b are sent by the first and second pumps 22a and 22b, respectively, and are pressurized to a predetermined pressure by the high pressure metering pump 23. A fixed amount is sent out. Both compounds are heated to a predetermined temperature by the heater 24 and sent to the spray gun 26 while being held at the predetermined temperature by the heater-equipped hose 25. The spray gun 26 collides and mixes both compounds and injects them into a mist. Both compounds form a polyurea resin by a chemical reaction and solidify on the surface of the object to be sprayed to form a coating film.

A powdery additive (for example, a powdery luminescent material, a retroreflector, etc.) can be mixed with the polyurea resin to be sprayed on the object. As a method of mixing the additive, a method of mixing the additive in the second tank 21b containing the amine compound in advance (internal mixing) and a method of mixing the additive with the polyurea resin at the time of spraying on the object (internal mixing). External mixing). If the inner diameter of the flow path inside the spray gun 26 is about 0.7 mm and the diameter of the additive is about 0.1 mm, internal mixing can be adopted. If the inner diameter of the flow path inside the spray gun 26 is about 0.7 mm, or if the diameter of the additive exceeds approximately 0.1 mm, an external mixing method is used to avoid failure of the spraying device. Is good.
The spraying device 20 shown in FIG. 3 further includes an additive mixing device 30 for externally mixing the additives. The additive mixing device 30 includes a third tank 31 containing the additive, a hose 32 for transporting the additive from the third tank 31, a second spray gun 33 for injecting the additive supplied from the hose 32, and a second spray. The gun 33 is provided with an air hose 34 or the like that supplies high-speed air.
A predetermined internal pressure is applied to the third tank 31 by an air compressor. The second spray gun 33 has the same configuration as the airbrush. By supplying high-speed air to the second spray gun 33 via the air hose 34, the additive is drawn into the high-speed air and ejected from a nozzle arranged at the tip of the second spray gun 33. The second spray gun 33 uniformly mixes the additive with the polyurea resin by injecting the additive toward the polyurea resin ejected in the form of mist from the spray gun 26.

In the case of internal mixing, the mixing ratio of the additive to the polyurea resin can be adjusted by adjusting the amount of the additive added into the second tank 21b.
Further, in the case of external mixing, since the amount of polyurea resin ejected from the spray gun 26 per unit time is known, the injection amount of the additive per unit time is set with respect to the injection amount of the polyurea resin per unit time. By adjusting, the mixing ratio of the additive can be adjusted. The injection amount of the additive per unit time can be controlled by adjusting the nozzle diameter of the second spray gun 33.

When forming the protective structure 1 as in the first embodiment, there are a plurality of steps of forming the intermediate layer 13 on the surface of the object to be protected 11 and forming the polyurea resin layer 15 on the surface layer of the intermediate layer 13. is required. If the intermediate layer 13 is formed by applying a fluorescent paint and it takes time to dry, it is necessary to wait for the polyurea resin to be sprayed until the intermediate layer 13 dries, which causes a problem that the construction takes time.
In the second embodiment, the photoluminescence material is internally mixed on the amine compound side or externally mixed at the time of spraying to mix the photoluminescence material with the polyurea resin and form a protective layer against the object to be protected. Can be carried out at the same time, and the construction time can be shortened.
Of course, in the second embodiment, the protective layer 17 itself may represent a specific design.

[Summary of Examples of Embodiments of the Present Invention, Actions, and Effects]
<First embodiment>
The protective structure 1 according to this embodiment is formed on the surface of the object to be protected 11 and is formed on an intermediate layer 13 containing a luminescence material excited by ultraviolet rays to emit light, and an intermediate layer and a surface layer of the intermediate layer. It is characterized by comprising a transparent aliphatic polyurea resin layer 15 that protects an object to be protected.
According to this embodiment, the ultraviolet rays transmitted through the aliphatic polyurea resin excite the luminescence material constituting the intermediate layer to emit light, so that the object to be protected and the intermediate layer are protected by the polyurea resin and irradiated. It is possible to achieve both improvement in visibility due to ultraviolet rays.

<Second embodiment>
The protective structure 2 according to this embodiment is a mixture of a luminescence material that is excited by ultraviolet rays to emit light and a transparent aliphatic polyurea resin having ultraviolet transparency, and is formed on the surface of the object to be protected 11. It is characterized by providing a protective layer 17 that protects the object to be protected.
According to this aspect, the protective layer emits light when the ultraviolet rays transmitted through the aliphatic polyurea resin excite the luminescence material constituting the protective layer, so that the protection of the object to be protected by the polyurea resin and the irradiated ultraviolet rays are used. It is possible to achieve both improvement in visibility.

<Third embodiment>
The method for forming the protective structure according to this embodiment includes a step of forming an intermediate layer 13 containing a luminescence material excited by ultraviolet rays to emit light on the surface of the protected object 11, and an intermediate layer and a protected object on the surface layer of the intermediate layer. It comprises a step of forming a transparent aliphatic polyurea resin layer 15 to be protected.
According to this aspect, since the polyurea resin layer is formed after forming the intermediate layer with respect to the object to be protected, it is possible to give a flexible design to the intermediate layer.

<Fourth Embodiment>
The method for forming the protective structure according to this embodiment is to collide and mix an aliphatic polyisocyanate compound and an aliphatic amine compound which is premixed with a luminescence material excited by ultraviolet rays and emits light with a spray gun 26. It is characterized in that a transparent aliphatic polyurea resin having a mist-like ultraviolet transmittance is sprayed on the surface of the object to be protected 11.
The polyurea resin is produced by collision-mixing a polyisocyanate compound and an amine compound. By mixing (internal mixing) the luminescent material on the amine compound side in advance before spraying the polyurea resin onto the object to be protected, it is possible to form a polyurea resin layer in which the luminescence material is mixed on the surface of the object to be protected. It can shorten the construction time.

<Fifth Embodiment>
The method for forming the protective structure according to this embodiment is a transparent aliphatic system having a mist-like ultraviolet transmittance by colliding and mixing an aliphatic polyisocyanate compound and an aliphatic amine compound with a spray gun 26. A step of producing a polyurea resin, a step of injecting and mixing a luminescent material that is excited by ultraviolet rays to emit light to a mist-like aliphatic polyurea resin, and a step of mixing the luminescent material in a mist-like aliphatic polyurea. It is characterized by comprising a step of spraying a resin onto the surface of a protected object.
The polyurea resin is produced by collision-mixing a polyisocyanate compound and an amine compound. By injecting and mixing (external mixing) the luminescence material with respect to the mist-like polyurea resin produced by collision-mixing both compounds, a polyurea resin layer in which the luminescence material is mixed is formed on the surface of the object to be protected. It can be generated and the construction time can be shortened.

1, 2 ... Protective structure, 11 ... Protected object, 13 ... Intermediate layer, 15 ... Polyurea resin layer, 17 ... Protective layer, 20 ... Spraying device, 21a ... First tank, 21b ... Second tank, 22a ... First Pump, 22b ... second pump, 23 ... high pressure metering pump, 24 ... heater, 25 ... heater hose, 26 ... spray gun, 30 ... additive mixer, 31 ... third tank, 32 ... hose, 33 ... second Spray gun, 34 ... Air hose

Claims (2)

What to protect and
An intermediate layer containing a specific design design drawn on the surface of the protected object using a luminescence material that is excited by ultraviolet rays to emit light.
A transparent aliphatic polyurea resin layer formed on the surface layer of the intermediate layer, which protects the intermediate layer and the object to be protected so that the design can be visually recognized from the outside, and has a property of transmitting ultraviolet rays. A sign characterized by comprising. The process of forming an intermediate layer containing a specific design design drawn using a luminescence material that is excited by ultraviolet rays and emits light on the surface of the object to be protected.
A step of forming a transparent aliphatic polyurea resin layer having a property of transmitting the ultraviolet rays while protecting the intermediate layer and the object to be protected so that the design can be visually recognized from the outside on the surface layer of the intermediate layer. A method for forming a label , which comprises.

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