JPH041309A - Formation of marking of road and application device - Google Patents

Abstract

PURPOSE:To increase visibility at night in rainy days, by scattering and sticking granular resin moldings having a specified radius and diapersed glass beads on the half-dried painted film to make lines, the same or different kinds of paints being applied on a roadsurface to form a belt. CONSTITUTION:Defined particles 12 are scattered through the feed holes 11 formed at a rotary drum 10 on a coated film 8 on the roadsurface 6, flowed down from the shutter 3 of a hopper 2 delivered from a melting furnace of the apparatus 1. Next, beads 14 are scattered thereon by a glass beads scatter 15 and adjusted by an adjusting roller 16. The apparatus body 1 is provided with a molton paint coating device 7 equipped with the molton paint hopper 2 having the shutter 3 at the flat vent 4 in order to apply the molton paint to define a belt on the road furface 6. And further, the apparatus is provided with a defined particles scatter 13 scattering the defined particles with 2-20mm having dispersed reflexive reflecting grass beads on the half-dried coated film 8, the scatter 15 sticking the glass beads onto the scattered particles 12 and the coated film 8, and a roller 16 in series.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for forming road markings with excellent nighttime visibility in rainy weather and a road marking construction machine therefor.

[Prior art] To improve the visibility of road markings at night during rainy weather, three-dimensional ma! The conventional method for attaching a reflector is to attach a reflector to a metal or plastic molded product and install it on the road surface with screws or adhesive.

■Those that attach metal studs or plastic bowl-shaped moldings to the road surface.

■With reflective material on the surface, a sheet with uneven surfaces is attached to the road surface.

■Applying grooves or irregularities by stamping the applied road marking coating.

■There are some methods, such as Japanese Patent Application Laid-open No. 156807/1983), in which a certain amount of highly viscous paint is dropped on the road surface using a special paint machine to form a convex hemispherical spot. Each has advantages and disadvantages.

[Problems to be Solved by the Invention] In other words, the above-mentioned conventional technologies include: ■ and ■ are traffic obstacles to motorcycles, risk of slipping and stumbling, obstruction to snow removal, high cost, and line painting. There are problems such as reduced efficiency.

■ has problems with peeling, durability, and repainting.

■ has the problem of dirt accumulating in the grooves and the durability of the shape.

Method (2) has relatively few drawbacks, but the problem is that the construction equipment is large-scale and the shape of the spot changes due to subtle differences in the conditions of the paint and construction equipment.

The present invention solves the above-mentioned problems and provides a method for forming road markings with a stable three-dimensional pattern in a short time until the traffic is opened by a construction method using a simple project construction machine, and a construction machine for the same. It is.

[Means for Solving the Problems] In order to achieve the above object, in the first invention of the present invention, a thermoplastic melt-type paint or a two-component reactive paint (or resin) is used to form particles with a diameter of 2 to 20 mm. Molded particles are prepared in advance from molded objects (spherical, disc-shaped, pellet-shaped, etc.) with reflective glass beads dispersed inside them, or glass beads are fixed to the surface of these molded objects. A liquid paint of the same or different quality is applied to the road surface in a constant width, and immediately after that, the molded granules are scattered on the undried paint film surface, and the granular molded product is fixed simultaneously with the hardening of the paint film.

Alternatively, a construction method may be used in which reflective glass beads are sprinkled over the molded product immediately after the molded product is sprayed, or a paint containing beads is applied.

Furthermore, in order to ensure the fixation of the dispersed molded particles or glass beads, the uncured lines can be lightly pressed with a roller to align them after they have been applied.

The construction machine of the second invention that carries out such a method is the construction machine of the first invention.
As shown in the figure, a self-propelled construction machine body 1 has a flat outlet 4 for applying a melt paint 5 made of thermoplastic melt paint, two-component reactive paint, or resin to a road surface 6 in the form of a belt of a constant width. A molten paint coating device 7 is provided with a molten paint hopper 2 having a shutter 3, and on the applied undried coating film 8,
Diameter 2-20 with retroreflective glass beads dispersed inside
- a shaped grain scattering device 13 for dropping shaped grains 12;
A glass bead dispersing device 15 for depositing glass beads 14 on the surface of the dispersed molded particles 12 and on the coating film 8 is installed in tandem in the traveling direction. 16 is a roller that lightly presses the line.

The molded grain dispersing device 13 has a storage chamber 9 for molded grains molded using a thermoplastic molten paint or a two-component reactive paint (or resin), and is rotated in contact with the storage chamber and sprays molded grains 12 on the circumferential surface.
A rotary drum 10 is provided with drop holes 11 having a diameter larger than that for receiving particles, which are bored at regular intervals or randomly along the axial direction, and the rotation of the wheels of the construction machine main body 1 of the traveling body is carried out via a transmission device 23. The rotary drum 10 is rotated to drop molded particles 12 at regular intervals onto the uncured coating film 8 applied to the road surface 6.

Moreover, as shown in FIG. 2, the shaped particle dispersion device is
Molded granule container 17 and an inclined dropping guide plate 21 at the bottom thereof
A drop opening 19 may be formed by a shutter 20 that opens and closes a slit-shaped opening.

As a method for forming the molded particles 12, a granulation method can be applied.For example, a pigment, a filler,
Melting paint containing glass beads, etc. (JIS K
There is a method of heating and melting 3 types of 5665) at about 200° C. to make a liquid, granulating it with an extrusion granulator, and then granulating it with a granulator to make the particle shape uniform. The sharp edges and fragile parts of the grains are shaved off in the grain sizer to make them spherical, but the glass beads contained in the grains remain on the surface of the grains because they have better wear resistance than other parts.

When granulating with reactive resin paint, it is made into a highly viscous liquid, and in the case of a two-component type, it is mixed uniformly with a two-component mixing device, and then granulated using an extrusion cold-cut granulation method, etc. Then, it is sized to form a molded product using the same method as for melting paint.

If you want the reflective material (glass beads) to protrude more from the surface of the particles, you can immerse the molded product in clear paint (a solution of acrylic resin, etc.) mixed with glass beads, or Another method is to coat the material by immersing it in a clear paint that does not contain glass beads, and then pouring it into a drum containing glass beads while it is still wet and rotating it continuously to fix the glass beads on the surface.

The method of applying these molded granules, which are granular molded products, is when using a melting paint, after applying a special primer for the melting paint, the conventional method is applied manually or with a self-propelled (mechanical) construction machine to a film thickness of 1. ~ It melted to about 2 temples! Apply paint to form lines,
Immediately after this, the molded granules are sprinkled onto the undried line using a dedicated construction machine to fix the granules. The molten paint and the molded particles are the same thermoplastic material, and are welded and fixed on the line that retains the heat after the coating is applied.

[One method of dispersing molded particles using a dedicated machine is to spray the coating film 8 on the road surface 6, which has flowed down from the shutter 3 of the hopper 2 from the melting pot of the construction machine shown in FIG. When the molded grains 12 are scattered through the drop hole 11 and glass beads are scattered thereon, a glass bead scatterer 15 is used.
The beads are dispersed by the roller 16, and then the beads are adjusted by the adjusting roller 16.
The width of the 0-rotation drum 10, in which the drop holes 11 are arranged at regular intervals or randomly, is selected according to the width of the line, and the number of rotations of the drum is determined in relation to the amount of sprayed particles.

Another method, as shown in FIG. 2, is to provide a drop-in port 19 and a shutter 20 at the bottom of a shaped grain container 17 filled with shaped grains, and by opening and closing the shutter 20, the molded grains 18 are transferred to the guide plate 2.
1, the molded particles are dispersed onto the uncured coating film 8 applied to the road surface 6 as the traveling body moves by itself. In this case, molten paint and glass beads are dispersed. The same machine and adjustment roller as shown in Fig. 1 is used, and by scattering glass beads immediately after dispersing the molded grains 18 and fixing them on the unfixed parts of the molded grains, the entire line can be stabilized at night. Ensure reflectivity.

Furthermore, the uneven shape of the molded grains makes the lines extremely uneven.
If it is necessary to adjust the coating surface, the adjustment can be made by rolling the glass beads on the line with a roller 16 having an appropriate weight immediately after scattering the glass beads.

When using a two-component reactive paint, it can be carried out in the same manner as the above-mentioned melting paint. In this case, the coating method is to fill a manual slitter for melting with a mixture of two components and perform line coating, and immediately after that, the molded product is spread and fixed in the same manner as for melting. The coating method can also be carried out using a dedicated automatic coating machine equipped with a two-liquid mixing device and a pressure-feeding coating device. 6. Spraying the reflective material and adjusting the coating surface are done in the same way as for melting.

Example 1 Formulation of molded article and paint Weight % binder (
Cs-based petroleum resin) 15 Titanium dioxide 8 Aggregate (Kansuiseki 2nd ring) 26 Filler (fine heavy coal) 30 Glass beads (particle size 105-850 μm) 16 (JIS
R3301 Glass beads for road marking paint, No. 1) Additives (plasticizers, stabilizers) 5 total 100 The above compound was heated and melted at around 200°C, liquefied, and granulated by extrusion granulation method to obtain particles with a diameter of 2. Most of the grains sized to ~5-5 were close to spherical in shape, but some were also observed to be circular.

This compound was melted at around 200°C in a melting pot, and after being applied to the road surface with a self-propelled construction machine to a film thickness of 1.5-1 width of 15cm*, the above molded particles were spread at about 100 g/m using a special machine. did. Furthermore, about 40 g/m of glass beads were scattered, and finally the line was adjusted by rolling lightly with a roller.

The finished line was a three-dimensional marking line with convex parts 2 to 5 cm high on the painted surface, and visibility was good not only during the day but also during rainy days and at night.

Example 2 Composition of molded particles and paint Weight % (A)
Reactive acrylic resin *3 Titanium dioxide 10 Aggregate (Kansuiseki 2nd ring) 25 Filler (fine powder gravity cal) 10 Glass beads (particle size 206-850 μm) 20 (J
IS R3301 Glass beads for road marking, No. 1) Additives (plasticizers, stabilizers) 5 total 100 *Prepolymer/acrylic monomer (8) Organic peroxide 50 Diluent 50 Total 100 Above formulation A/B The mixture was mixed in a ratio of 100/2, granulated using an extrusion cold cut method while paying attention to the pot life (pot life), and processed with a granulator to form granules of about 2 to 5 square centimetres.

The above formulation A/B is uniformly applied to the road surface to a thickness of 1.5 to 2 cm and a width of 153 mm using a special construction machine equipped with a mixing device static mixer that mixes the mixture A/B at a ratio of 100/2. It was sprayed at about 10 Or/m using a slit sprayer. Furthermore, glass beads were scattered at 50 g/m, and after R, the material was lightly rolled with a roller and pressed down, and the line was adjusted to finish.

The finished line is a three-dimensional marking line with a convex part 2 to 5 cm high on the painted surface, and it is highly visible not only during the day, but also in the rain and at night, and because it uses reactive resin, The durability of the shape was also good.

[Effects of the invention] In the present invention, the construction equipment for road surface is very simple, the time required to open the road during construction is short, and the finished line has three-dimensionality, so rainwater drains well and can be easily used on rainy days and at night. Visibility at the time is extremely good, which greatly contributes to traffic safety.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of the main parts of a construction machine showing an embodiment of the present invention;
FIG. 2 is an explanatory diagram of a slit-type molded grain dispersing device, FIG. 3 is a schematic diagram of the construction machine, and FIG. 4 is a road marking line constructed according to the present invention. 1... Construction machine body, molten paint hopper, 3...
・Shutter, 4...Exit, 5...Melted paint, 6.
... Road surface, 7... Melt paint coating device, 8... Paint film,
9... Molded grain storage chamber, 10... Rotating drum, 11.
... Input port, ]2... Molded grains, 13... Molded grain scattering device, 14... Glass beads, 15... Glass bead scattering machine, 16... Adjustment roller, 17... Molded granule container, 18... Molded granule, 19... Drop-in port, 20.
...Shirt Tsuta-121...Slanted guide plate, 22...
Molded grain scattering device, 23...transmission device.

Claims (6)

[Claims] (1) Diameter 2 with retroreflective glass beads dispersed inside
A method for forming road markings, in which a granular resin molding of ~20 mm is coated with a paint of the same type or a different type as the resin in a band shape on a road surface, and is spread and fixed onto the undried paint film to form a line. (2) The method for forming road markings according to claim 1, wherein the material of the granular resin molding and the paint is a petroleum resin or a reaction-curable resin. (3) The method for forming a road marking according to claim 1, wherein the granular resin molded product is spherical, disc-shaped, or pellet-shaped. (4) The traveling body is equipped with a molten paint hopper having a flat outlet that can be opened and closed to apply molten paint made of thermoplastic melt paint, two-component reactive paint, or resin to the road surface in a band of a constant width. A molded particle dispersion system that uses a molten paint application device and sprays molded particles with a diameter of 2 to 20 mm, which are made of a resin molded product with retroreflective glass beads dispersed inside, onto the undried paint film applied to the road surface. A road marking construction machine comprising a device and a glass bead dispersing device for depositing glass beads on the surface of the sprayed molded particles and on the coating film, installed in tandem in the traveling direction. (5) The molded grain dispersion device is rotated in contact with the molded grain storage chamber, and concave drop holes larger than the particle diameter for receiving the molded grains are bored at regular intervals or randomly along the axial direction on the peripheral surface. 5. The road marking construction machine according to claim 4, further comprising a rotating drum and a transmission device for transmitting power from the traveling body to the rotating drum so as to drop the molded particles at regular intervals. (6) The shaped grain dispersing device is formed of a hopper for storing the shaped grains, a slit-shaped dispersion port having an inclined drop guide plate at the bottom thereof, and a shutter for opening and closing the dispersion port. road marking construction machine.