KR20130125468A

KR20130125468A - Construction method of reflection bead removed reflecting film partially and road sign

Info

Publication number: KR20130125468A
Application number: KR1020120048992A
Authority: KR
Inventors: 이동복
Original assignee: (주)에스시아이
Priority date: 2012-05-09
Filing date: 2012-05-09
Publication date: 2013-11-19

Abstract

The present invention relates to a construction method of a reflection bead having a reflecting film partially removed and a road sign using the same. The present invention particularly relates to the construction method of the reflection bead having excellent retro-reflection by removing the reflecting film on a portion of the reflection bead exposed to the outside of a binder and the road sign using the same. The construction method of the reflection bead having the reflecting film partially removed comprises: a spraying step for spraying beads coated with reflecting films to a binder layer to expose one side of the beads to the outside of the binder layer and bury the other side of the beads in the binder layer; a fixing step for fixing the beads to the binder layer by hardening the binder layer; and a physical removal step for removing the reflecting films exposed to the outside of the binder layer using a physical method to project light into the beads.

Description

Construction method of reflection bead removed reflecting film partially and road sign}

The present invention relates to a method for constructing a reflective bead in which the reflective film is partially removed and to a road marking using the same, and more particularly, a reflective bead having excellent retroreflection by removing the reflective film only at an exposed portion of the bead exposed to the outside of the binder. Construction method and road signs using the same.

Today, due to the development of the automobile industry, a number of signs are appearing on the road for smooth communication and safe traffic of vehicles.

Cars have become a vital means of living for modern people as a means of speeding at high speeds. Along with the rapid passage of vehicles, safe driving of vehicles is an inevitable factor in the transportation culture.

Road marking means for guiding and directing vehicles are well known. The road marking means includes lanes displayed on the road surface, various arrows, letters and symbols, and the like, which are supported by surrounding roads or road facilities and guide information of various roads.

Among them, the lane of the road is well recognized as a lifeline for motorists. Road lanes serve as signs that guide drivers safely to their destinations without being interrupted by other drivers, while road signs indicate that those who want to cross the road are protected from vehicles Performs a function that allows you to cross the street. Such road marking means can be said to be a safety net that ensures the safe movement between the vehicle and people.

Recently, in order to provide sufficient lane information not only for daytime drivers but also for nighttime drivers, glass beads having retroreflective properties are manufactured and used as fine circular spheres.

Retroreflective refers to the reflection of the incident light back to the light source. That is, when light from an object (light source) reaches the object again, it is retroreflective to send the incident light, which is the received light, back to the light source. Whatever light shines on an object, it reflects light in the direction of the light source. It is common on road signs, where the light from the headlights of a car running at night shines on the road signs, making them visible to the driver's eyes. This is because the light from the headlamps hits the surface of the reflective road sign and is reflected back to the light source by retroreflection. Using this principle of retroreflection, lanes or signs on winding roads often use retroreflective products to easily recognize objects at night.

In general, there are two methods for constructing road lanes using glass beads as retroreflective elements.

First, the glass beads are sprayed. This method is a method of first applying paint on the road surface and spraying glass beads on the road. Another method is to mix the glass beads with the paint material and apply the paint to the road surface to form a lane.

However, the above-described construction method has a problem in that the retroreflective effect is insignificant because the glass beads themselves do not function to reflect light even when light is incident on the glass beads themselves.

Korean Laid-Open Patent Publication No. 2007-0102770 discloses a retroreflective glass bead coated with an aluminum film on about half of the entire surface of the bead. The disclosed glass beads have a high retroreflective effect since light is incident into the interior through a portion where the aluminum film is not coated, and the light incident therein is reflected by the aluminum film.

However, when the glass bead is applied to the lane construction, there are the following problems.

First, when paint is applied to the road surface and glass lanes are sprayed on the road, some of the glass beads have glass beads where the aluminum film is formed on the paint layer and the aluminum film is not formed. Exposed to the outside of the layer can have the desired retroreflective effect. However, the remaining glass beads have a problem in that the part where the aluminum film is not formed is buried in the paint layer, and the part where the aluminum film is formed is exposed to the outside of the paint layer, so that light is not incident on the glass bead so that retroreflection cannot be performed.

Second, when the glass beads are mixed with the paint raw material and the lanes are applied by applying paint on the road surface, the paint is attached to the surface of the glass bead, which also has a problem in that the retroreflective function is very low.

The present invention was created to improve the above problems, in order to maximize the retroreflective effect of the beads applied to the binder, the reflective film is formed only in the portion embedded in the binder layer and the reflective film is removed in the portion exposed to the outside of the binder layer. The purpose is to provide a bead construction method and road signs using the same.

In order to achieve the above object, a method of constructing a reflective bead in which the reflective film of the present invention is partially removed, sprays beads having a reflective film on the entire surface of the binder layer to expose one side of the bead to the outside of the binder layer. The other side of the spraying step of embedding in the binder layer; A fixing step of hardening the binder layer to fix the beads to the binder layer; And a physical removal step of physically removing the reflective film exposed to the outside of the binder layer to allow light to be incident into the bead.

The physical removing step is characterized in that the reflective film is peeled off by applying friction to the reflective film.

In the physical removing step, the rotating friction material contacts the beads to apply friction to the reflective film.

The physical removal step is characterized in that to remove the reflective film in parallel with the chemical method.

In the physical removing step, the reflective film is peeled off by contacting the reflective film with an acid solution while applying friction to the reflective film.

The acid solution is characterized in that at least one selected from phosphoric acid, nitric acid, hydrochloric acid, sulfuric acid.

As described above, according to the present invention, since the beads having the reflective film formed on the entire surface of the binder layer are sprayed onto the binder layer, only the reflective film of the portion exposed to the outside of the binder layer is selectively removed, so that the installation of the reflective beads is very easy.

In addition, since the reflective film is formed only on all the buried portions of the beads sprayed on the binder layer, the light incident on the exposed portion of the beads may be retroreflected from the reflective film to maximize the visibility effect at night.

1 is a cross-sectional view showing a state in which beads having a reflective film formed on the entire surface of the present invention are sprayed onto a lane according to an embodiment of the present invention.
2 is a cross-sectional view illustrating a state in which a reflective film of a portion exposed over a lane is removed;
3 is a front view showing a state in which the reflective bead is constructed in the sign according to another embodiment of the present invention,
4 is a cross-sectional view illustrating the main part of FIG. 3.

Hereinafter, a method of constructing a reflective bead in which the reflective film is partially removed according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The method for constructing a reflective bead in which the reflective film is partially removed according to an embodiment of the present invention includes a spraying step, a fixing step, and a removing step.

First, before performing the spraying step, a reflective bead having a reflective film formed on the entire surface is prepared.

The reflecting beads are made of a transparent material to allow light to enter therein, and have a spherical structure. Glass or resin may be used as the material of the beads. Beads can be made in a variety of sizes. For example, the beads may be spherical with a diameter of 0.5 to 1.5 mm.

Various methods known as a method of forming a reflective film on the surface of the beads are applied. There is no limitation on the material or formation method of the reflective film as long as it can reflect light incident to the inside of the bead. For example, an aluminum reflective film may be formed on the surface of the beads by a vacuum deposition method. In addition, in addition to vacuum deposition, a reflective film may be formed on the surface of the beads by various methods such as coating, painting, and printing.

When the beads having the reflective film formed on the entire surface are prepared, a spraying step of spraying the beads onto the binder layer is performed.

The binder layer can be formed by applying a binder to the surface of the support. As the binder, conventional adhesives, paints, liquid resins, and the like may be applied. The binder layer serves to fix the beads.

The binder can be applied to various kinds of supports. For example, the support may be an asphalt pavement or a cement pavement, and may be a sheet attached to various road signs installed on the road.

When the pavement 1 is applied to the support as shown in FIG. 1, the binder layer 5 may be a lane. In this case, the lane coating is applied as a binder, and the lane coating is applied to the road surface of the pavement 1 to form the binder layer 5. In addition, as shown in FIGS. 3 and 4, when the sheet 35 of the road sign plate on which the numbers, symbols, pictures, etc. are printed is applied to the support, a binder layer 40 is formed by applying a transparent adhesive on the sheet 35. can do.

After the binder layer is formed on the support, the beads are spread on the binder layer before the binder is cured. The spreading of the beads can be carried out manually or by mechanical devices.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated using a lane as an example. An example of the bead spread | diffused on the binder layer which forms a lane is shown in FIG. Referring to FIG. 1, one side of the beads 10 sprayed on the binder layer 5 with the reflective film 20 formed on the entire surface thereof is exposed to the outside of the binder layer 5 and the other side is embedded in the binder layer 5. do.

Due to the nature of the spraying of the beads 10, many of the beads spread on the binder layer 5 are non-uniformly arranged, and the depth of embedding may also vary for each bead 10. That is, one bead may be buried about 1/2 of the depth, the other bead may be buried about 2/3 deep, and the other bead may be buried about 1/3 deep.

For convenience of description, one side of the bead 10 exposed to the outside of the binder layer 5 based on the upper surface A of the binder layer is referred to as the exposed portion 11, and the beads buried in the binder layer 5 ( The other side of 10) is called buried part (13). The reflective film formed on the exposed portion 11 of the beads is referred to as the exposed reflective film 21, and the reflective film formed on the embedded portion 13 of the bead is referred to as the embedded reflective film 23.

When the spraying of the beads 10 is completed, a fixing step of fixing the beads 10 to the binder layer 5 is performed.

The fixing step consists of curing the binder layer 5. Therefore, it waits until the binder layer 5 hardens after spreading the beads 10. In addition, in order to promote hardening, curing may be performed by simultaneously applying hot air to the binder layer 5 in a fixing step.

When the binder layer 5 is cured, as shown in FIG. 1, the upper part of the bead, that is, the exposed part 11, is exposed to the outside of the binder layer 5, and the lower part of the bead, that is, the buried part 13, is buried. It is fixed to the binder 5 layer in a state.

Since the reflective film 20 is formed in the whole surface of the bead 10 sprayed on the binder layer 5, the reflective film is also formed in the exposed part 11 of the bead. In this state, light cannot enter the inside of the bead 10. Therefore, a physical removal step of removing the exposed reflective film 21 exposed to the outside of the binder layer is performed to allow light to enter the inside of the bead 10.

As a method for removing the exposed reflective film 21, a physical method may be applied.

As an example of the physical method, the reflective film may be peeled off by applying friction to the exposed reflective film 21 exposed to the outside of the binder layer 5. For example, in the state where the friction material is in contact with the bead 10, the exposed reflection film 21 may be rubbed and removed by rubbing. Brushes, sandpaper, sponges, scouring pads, nonwovens, and woven papers can be used as friction materials. For example, the rotating cylindrical brush is rubbed in contact with the exposed reflective film 21 formed on the exposed portion 11 of the bead 10 while moving in the front and rear or left and right directions on the binder layer 5. In this case, friction is applied to the exposed reflective film 21 by the rotating brush, and thus the exposed reflective film 21 is peeled off and removed. FIG. 2 shows the bead 10 in which the exposure reflecting film is removed in this manner.

As described above, the exposed reflection film can be easily removed by a physical method. In addition, the removal of the exposed reflection film by this physical method is very fast working time, and does not cause the surrounding pollution and environmental damages caused by the removal.

Meanwhile, in another embodiment of the present invention, the physical removal step may remove the exposed reflective film 21 in parallel with a chemical method. In other words, the chemical method is used simultaneously with the physical method. For example, the acid reflection solution may be brought into contact with the exposure reflection film while applying friction to the exposure reflection film 21 to remove the exposure reflection film 21. This has the advantage that the exposure reflection film 21 can be removed by the chemical action of the acid solution together with the physical action due to the mechanical friction, which further shortens the working time.

As an example of the physical removal step, when the acid solution is buried in a cylindrical brush and rotated to contact the exposed reflection film 21, a chemical reaction together with physical friction may be simultaneously applied to the exposed reflection film 21. In addition, the acid solution can be sprayed onto the exposed reflective film 21 in a state where the cylindrical brush is rotated to contact the exposed reflective film 21. In addition, it is possible to apply friction to the exposed reflective film 21 while rotating the cylindrical brush in a state in which the acid solution is sprayed onto the exposed reflective film 21. In addition, the friction material may be removed by rubbing the exposed reflective film 21 using a manual method or a mechanical device while the acid solution is absorbed by the friction material capable of absorbing liquid such as a sponge, a cloth, a nonwoven fabric, or the like.

As the acid solution to be applied to the present invention, it is preferable to use a substance which does not cause a chemical reaction with the binder material forming the binder layer 5. In consideration of hazards to workers, environmental pollution and odors, reaction with binders, and removal efficiency, appropriate acid solutions are used depending on the type of reflective film. Suitable acid solution is at least one selected from phosphoric acid, nitric acid, hydrochloric acid, sulfuric acid.

In addition to the acid solution described above, an alkaline solution can be used. As alkali, sodium hydroxide, potassium hydroxide, etc. can be used.

In parallel with the chemical method, a process for removing or neutralizing the remaining acid solution by buried in the binder 5 layer and the beads 10 may be further performed after removing the exposed reflective film. For example, the upper surface of the binder layer 5 may be wiped off using an absorbent capable of absorbing the acid solution to remove the remover. In this case, water can be added to remove the remover in a sufficiently diluted state. In addition, a substance capable of neutralizing the acid can be added to neutralize and then removed.

As such, the present invention removes the reflective film from the exposed portions of all the beads fixed to the binder layer. Therefore, the buried portion of the bead is a reflection film is formed as it is excellent in the reflection effect can greatly improve the visibility at night.

Hereinafter, the road sign on which the reflective bead in which the reflective film is partially removed by the above-described construction method is constructed will be described.

As the road signs described above, various examples such as lanes, signs, beacons, and reflective sheets may be applied. Reflective beads with the reflective film partially removed are applied to these road signs to improve night visibility of the road signs.

2 shows an example of a lane applied as a road sign. Such road markings include a binder layer 5 formed on the road surface of the road 1, an upper portion of which is exposed to the outside of the binder layer 5, and a lower portion of the beads 10 fixed in a state buried in the binder layer 5; And a buried reflective film 23 formed on the surface of the buried portion of the bead 10 embedded in the binder layer 5.

3 and 4 show the appearance of a speed sign applied as another example of a road sign.

Referring to FIGS. 3 and 4, the binder layer 40, the front surface is exposed to the outside of the binder layer 40 and the rear surface is fixed in the state buried in the binder layer 40 and the binder layer The reflective film 55 formed in the surface of the embedding part of the bead 10 embedded in 40 is provided. The binder layer 40 is formed on the sheet 35 attached to the front surface of the road sign plate 30.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

1: road 5: binder layer
10: Bead 11: exposed area
13: buried part 20: reflective film
21: exposed reflective film 23: buried reflective film

Claims

A spraying step of spraying beads having a reflective film formed on the entire surface of the binder layer so that one side of the beads is exposed to the outside of the binder layer and the other side of the beads is embedded in the binder layer;
A fixing step of hardening the binder layer to fix the beads to the binder layer;
And a physical removal step of physically removing the reflective film exposed to the outside of the binder layer to allow light to enter the inside of the bead. 12. The method of claim 1, wherein the reflective film is partially removed.

The method of claim 1, wherein the physical removing step removes the reflective film by applying friction to the reflective film.

The method of claim 2, wherein the physical removing step includes applying a rotating friction material to the beads to apply friction to the reflective film.

The method of claim 1, wherein the physical removing step removes the reflective film in parallel with a chemical method.

5. The method of claim 4, wherein the physical removing step removes the reflective film by contacting the reflective film with an acid solution while applying friction to the reflective film.

The method of claim 5, wherein the acid solution is at least one selected from phosphoric acid, nitric acid, hydrochloric acid, and sulfuric acid.