KR20180131065A - The method of forming the Excellent reflective bead in the rain - Google Patents

Abstract

The present invention relates to a method of manufacturing beads having excellent reflectivity even in the rain, and more specifically, to a method of manufacturing road beads, in which the entire surface or a portion of beads are coated with a coating layer in white, silver, silver-white, grey, or silver-grey color, or a mirror-like coating layer to achieve excellent reflectivity reflecting the light of a headlight when driving at night or in the rain, or to improve road visibility. In particular, the method of producing road beads having improved road visibility, comprises the steps of: preparing beads; thoroughly washing the beads to allow a reflective material or a coating layer having a mirror-like reflective surface to successfully attach to the prepared beads; attaching to the surface of the washed beads, reflective materials in colors such as white, silver, silver-white, grey, and silver-grey, or pearlescent material, or aluminum foil, or forming a coating layer having a mirror-like reflective surface on the surface of the washed beads; forming a protective film to protect the formed coating layer, by using a resin with transparency, good light transmittance, and resistance to being peeled off by external stress; and conducting a heat treatment or a UV-curing treatment.

Description

[0001] The present invention relates to a method of forming a bead,

The present invention relates to a method of manufacturing a bead having excellent reflectivity even in the case of a rainy day, in which a coating layer such as white, silver, silver white, gray, silver gray or mirror is formed on the entire surface or a part of the bead, Which is excellent in reflectivity and can improve reflection and transparency of a road, and improved visibility (visibility) of roads. Conventionally, in order to emphasize the division of the lane, glass beads reflecting light are sprayed on the surface of the lane. However, these lanes are particularly inconvenient for safe operation because the light reflected by the water film phenomenon during the rainy season is totally reflected in the water film layer and can not come out through the water film, .

Reflective bead is a bead whose main property is light reflecting property. It is mainly embodied on the road sign and road surface, and it shows visibility of road situation or information, regulations on road traffic and directions To provide the driver with safety and smooth communication of the vehicle operation and safety of the driver. A good reflectivity means that more of the incident light is reflected.

As a prior art, the prior art disclosed in Korean Patent Registration No. 10-2010-0009432 discloses a composite retroreflector made by combining a plurality of small glass beads with a large glass bead in the center using a light reflective adhesive. The technique described above is a technique for producing a high refractive index composite in which the incident light reflects in a plurality of directions due to irregular reflection and shows a part of the retroreflectivity that an incident angle direction is included in the direction. The majority of light has technical or practical limitations that can not pass through the meniscus.

In addition, the prior art disclosed in Korean Patent No. 10-1232032 has a disadvantage that the area of the bead is mixed with the paint and is exposed to the outside when the paint is applied to the road surface, thereby reducing the reflection efficiency remarkably, Due to the total reflection by the water film, the majority of light has a technical limitation that it can not pass through the water film.

As another conventional art, a single spherical glass bead disclosed in U.S. Patent No. 7,045,475 is not structurally complicated because of retroreflectivity, but has a limitation in that light can not pass through the water film due to total reflection due to water film in a rainy season.

Another prior art disclosed in the Korean Patent No. 10-1150310 is a method for producing a laminate comprising a first reflective agent made of transparent microcrystalline ceramic powder having a particle size of 500 to 2000 mu m and a refractive index of 2.4 or more and a first reflective agent having a particle size of 100 to 1000 mu m A second reflecting agent made of a transparent glass bead powder having a refractive index of 1.5 to 1.8, and a reflective layer made of a titanium dioxide photocatalyst, which improves visibility in rainy weather. However, the majority of the light is transmitted through the water film And has technical or practical limitations that can not be met.

[Patent Document 1] Korean Patent No. 10-1150310. [Patent Document 2] U.S. Patent No. 7,045,475 [Patent Document 3] Korean Patent No. 10-2010-0009432 [Patent Document 4] Korean Patent No. 10-1232032 [Literature 5] Domestic Registration No. 10-0467770 (Destruction).

The present invention forms a coating layer for reflecting light by bonding white, silver, silver white, gray, silver gray, and pearl to the entire surface or a part of a bead made of various materials having a size of 1 micron to several thousands of microns Or a reflection film like a mirror is formed so that the reflectivity which can reflect the light of the headlight during nighttime running or rainy weather can be well reflected and the visibility of the road is improved, . Here, the bead made of various materials refers to beads made of glass, plastic, metal, non-metal, organic, inorganic, or one or more complex of these, and its shape and size are not specified.

The present invention provides a method of manufacturing a road bead having excellent reflectivity capable of reflecting light of a headlamp and improving visibility of a road, comprising the steps of: preparing the bead and cleaning the surface; A step of applying a resin for adhesion for adhering white, silver, silver white, gray, silver gray, pearl, aluminum foil or the like to a part or masking a specific part for forming a semi-use coating film such as a mirror, Sputtering, electrolytic or non-electrolytic plating such as white, silver, silver white, gray, silver gray, pearl, aluminum foil or the like is flowed into the resin-coated bead to form a reflection use film on the portion to which the adhesive is applied, To form a coating film having a reflective surface such as a mirror, to protect the coating film formed after the step, It is characterized in comprising heat-treating the coating film protective resin applied to the step of applying the bead.

The present invention relates to a method for forming a coating layer by adhering a substance such as white, silver, silver white, gray, silver gray, pearl, aluminum foil or the like capable of reflecting light to a bead made of an unspecified material, The present invention provides a method of manufacturing a road bead having excellent reflectivity that can reflect light of a headlight during nighttime driving or rainy weather by forming a coating layer having a reflective surface and improves road visibility.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows the basic structure of a bead produced by the present invention
FIG. 2 is a view showing a path (a) of light reflected by light incident on a conventional glass bead, a path (b) of light reflected by incident light on the bead according to the present invention,
Fig. 3 is a view in which the incident light of the light incident on the existing used bead and the reflected light caused by the water film are totally reflected in the rain.
4 is an optical path of incident light of a light incident on a bead manufactured by the present invention and reflected light that has passed through a water film.
FIG. 5 is a graph showing the relationship between a conventional glass bead (a), a bead (b) (hereinafter referred to as an adhesive bead) to which a reflective material is adhered and a coating layer bead
6 shows the reflection (a) of light in a bright place (b) (glass bead, adhesive bead 1, adhesive bead 2 from the left) of light in the dark before the occurrence of a water film layer,
7 shows the reflection of light in the light (a), the reflection of light in the dark (b) (the glass bead from the left, the adhesive bead 1, the adhesive bead 2)

The present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a view showing a basic structure of a bead produced by the present invention, in which a coating layer having a bead at its center and having a reflective surface such as silver, white, gray, silver gray, pearl, aluminum foil or the like, The resin for protecting the coating layer is transparent and has a property of passing light well and not being easily peeled off by external stimuli as a structural diagram of the bead manufactured by the present invention comprising a resin for protecting the coating layer.

Fig. 2 shows incident light of the bead (b) according to the present invention and the reflecting mirror path in the glass beads (a) used in the conventional method when drying. As shown in Fig. (A), in the case of ordinary glass, the incident light enters the glass and is then reflected inside the glass, and the light travels again into the air. However, the path of light in the bead (b) And the light path is directly different from the glass bead used in the existing construction.

FIG. 3 is an explanatory view of an optical path when using an existing glass bead. In the case of rain, incident light enters into the glass bead after being incident into water in the air, is reflected from the inside surface of the glass bead, It is totally reflected from the surface and does not go out into the air. This figure illustrates the phenomenon that the glass beads used in the past are totally reflected by the water film formed in the rain and the light is not reached to the driver.

FIG. 4 is a diagram illustrating an optical path when using beads manufactured according to the present invention. In FIG. 4, incident light enters the water in air during rain, and then light reaching the coating layer of the bead of the present invention is reflected by the coating layer of the bead, The light is incident on the surface of the water film at an angle at which the light is not generated and the light travels into the air without total reflection at the surface of the water film, thereby transmitting light to the driver.

According to the reflection principle, the bead manufactured by the present invention can provide a good view to the driver even if a water film occurs in a rainy season.

FIG. 5 is a cross sectional view of a bead according to the present invention, wherein (a) is a bead used in conventional road construction, (b) (C) is an example of a bead made to have a mirror-like reflective surface by vapor deposition, sputtering, plating or the like on the bead according to the present invention. The beads of (b) and (c) provided by the present invention do not cause total reflection by the water film layer due to reflection of light as shown in FIG. 4, and provide a good view to the driver.

[Example]

6 (a) is a bead s1 used for existing road construction, and an adhesive bead s2 obtained by adhering white pearl to a bead with a reflective material on the surface according to the present invention, and s3 is a concentration It is shown in photographs that light is reflected in a bright place under dry condition with adhesive bead made by adhering heavily white pearl. It can be seen that s1, s2, s3 both reflect light well without great difference. (b) is a diagram in which each bead reflects light when illuminated by a lantern in order to simulate the effect of the headlight of a car when it is in a dry condition. In the case of s1, s2 and S3, Respectively.

Fig. 7 is a picture in which water is sprayed so that the bead is immersed in water and the water film phenomenon occurs in the state of Fig. 6 in order to simulate when a road phenomenon occurs when a road is immersed in a rainy weather. 7 (a) is compared with FIG. 6 (a), it can be seen that when the water film is formed, the light is not reflected well and the visibility is remarkably decreased. The adhesive beads s2 and s3 in which the pearl is adhered to the surface of the pearl plate with a reflective material are compared with s2 and s3 in Fig. 6 (a), and the visibility is maintained even though the water film phenomenon occurs. . Fig. 7 (b) is a diagram in which light is reflected by each bead when a light is projected using a lantern in a state where a water film phenomenon is caused to simulate the effect of a headlight of a car when it is dark, as shown in Fig. 6 (b) The glass beads s1 in use show that the light can not escape due to the pre-reflection due to the water film. However, the adhesive beads s2 and s3, in which the fill is adhered to the surface of the bead with the reflective material, You can see that it gives the driver a good view.

The present invention can be used for enhancing safety by using in a place where visibility is a problem due to total reflection in rainy weather such as road construction.

Glass beads s1, adhesive beads s2, adhesive beads S3, water s4,

Claims (1)

A bead manufactured so as to provide a driver with a good field of view even in a rainy season,
Washing the beads well so that the reflective material adheres well to the prepared beads or the coating layer having a reflective surface such as a mirror adheres well,
Attaching a reflective material such as white, silver, silver white, gray, silver gray, pearl, aluminum foil or the like to the cleaned bead surface or forming a coating layer having a reflective surface such as a mirror,
Forming a protective coating film by using a resin having transparency to pass the light well and not being easily peeled off from the external stimulus to protect the formed coating film layer,
And a step of performing a heat treatment or an ultraviolet curing treatment after the step. In the method of manufacturing a bead having excellent reflectivity, the total reflection is not caused even by the water film layer which occurs in rainy weather, and a good visual field is provided to the driver.

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