JP3735263B2 - Drainage road marking coating structure and equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a road marking coating method, a road marking coating film structure, and a coating apparatus in a road or a parking lot.
[0002]
[Prior art]
Various markings such as lane markings, letters and symbols are applied to roads and parking lots. Traffic paint heating type (2 types of JIS K 5665) that heats and sprays oil-based or water-based road marking paint is required for lane marking coating on expressways. The type is common. However, such a device is excessively equipped for small-scale construction and lacks economic efficiency. In addition, the construction near the entrances and exits of interchanges and service areas cannot be completely closed, so it is unavoidably carried out with a small room temperature spray coating device. It is different, and the device is hand-held so that the marking paint is shaded and is unsuitable for long hours due to human power.
[0003]
Moreover, since the coating film by the conventional traffic paint coating apparatus is about 0.4 mm thick and thin, it is difficult to wear the coating sign at an early stage. There is little slip resistance. Road surfaces such as expressways are changing to rainwater drainage or drainage pavement (including permeable pavement) with excellent noise countermeasures, and the road surface is rough, so the display tends to appear thin even with the same coating thickness (application amount). is there. Currently, there is also a spray-type melt-type coating method that is highly visible even in drainage pavement, but because it is also a melt-type road marking paint, softening of the paint due to high temperatures in the summer reduces the permeability gap of the drainage pavement. There is an adverse effect caused by blocking, and it has not been solved.
[0004]
Furthermore, in the two-component reaction type among the rib type high visual recognition marking lines, in order to shape the two-component rib after applying the base paint (as shown in the cross-sectional example in FIG. 10, the base road marking coating is applied to the road surface 21. Because the film layer 31 is formed into a spot-like rib shape with the two-component rib coating film 32 after coating), the difference in properties such as the hardness of the coating film layers 31 and 32 constituting the dividing line, There are some cases where the rib shape is buried or peeled off due to the impact.
[0005]
[Problems to be solved by the invention]
Therefore, the present inventors have high durability and visibility of the road marking after coating in drainage pavement as well as normal pavement, and it is economical that the coating device does not become excessive equipment in small-scale construction, In addition, simple traffic control is required for construction near the entrances and exits of interchanges and service areas, and the traffic paint heating type (JIS K 5665 type 2), which is required by design, and rib-type high visibility An object of the present invention is to provide a road marking coating method and a coating apparatus in which the rib shape does not sink or peel off due to the impact of a passing vehicle even on a lane line.
[0006]
[Means for Solving the Problems]
As a result of studying the above problems, the liquid road marking paint of warmed water-based paint is sprayed from the spray port by air or airless method, and at the same time, synchronized with one or more spray ports, or any one of the spray ports In addition, a road marking coating method was adopted in which the loss of the function-imparting material was suppressed as much as possible by spraying the function-imparting material through the spout and mixed to ensure a predetermined coating thickness. As a pre-construction of this road marking coating method, it was also adopted as a high standard marking coating method in which the ribs of the melt-type road marking coating were directly applied to the road surface at regular intervals or randomly and solidified.
[0007]
As the melt-type road marking paint, a resin blended with a plasticizer, an inorganic filler, a colorant and the like is used. Resins include ordinary raw rosin, maleated rosin, maleated rosin ester resin, petroleum resin, polyamide resin, saturated polyester resin, xylene resin, hydrogenated rosin, hydrogenated petroleum resin, polyethylene, polypropylene, isobutylene, isobutene, coumarone -Indene resin, terpene resin, ethylene-vinyl acetate copolymer resin, ethylene ethyl acrylate copolymer resin, unsaturated polyester resin, epoxy resin, urethane resin, acrylic resin and the like.
[0008]
Examples of the plasticizer include vegetable oils, alkyd resins, mineral oils, epoxidized oils, phthalate esters, and liquid synthetic rubbers in which one or a mixture of two or more are dissolved. Examples of the inorganic filler include calcium carbonate, cinnabar, talc, cold water stone, and alumina powder. Examples of the colorant include titanium dioxide, zinc white, lithopone, lead white and the like as white pigments, and organic yellow pigment, iron oxide, titanium yellow and the like as yellow pigments.
[0009]
Commercially available melt-type road marking paints can be used. In general, the blending ratio of each component in the paint is 8 to 20% by weight of resin, 0.5 to 5% by weight of plasticizer, and 32 to 70% by weight of inorganic filler. %, And 10 to 30% by weight of glass beads are preferred. If necessary, additives such as an anti-settling agent, an anti-aging agent, and an ultraviolet absorber are appropriately blended.
[0010]
In addition, as a liquid road marking paint (also referred to as paint in the present invention), a solvent-based alkyd resin varnish or the like mixed with a solvent such as methanol or toluene, an inorganic filler, a coloring material, etc. can be used. Solvent-based aqueous paint heating road marking paints (JIS K 5665, 2 types, Japan Highway Public Corporation standard, for hot spray) are preferably used.
[0011]
The function-imparting material referred to here is any one of a coating film thickness complement material, a retroreflective material, a slip resistance material, or a mixture of any of these. Calcium carbonate, cinnabar, talc, cold water stone, alumina powder and the like can be used as the coating thickness complementing material. Examples of the slip resistant material include oyster powder, granulated slag, finely pulverized waste plastic, and the like. The retroreflective material is most preferably glass beads, and those having a particle size of 0.1 to 2.0 mm are suitably used.
[0012]
As a method for causing a function-imparting material to be present in the road marking coating layer, it functions from the spraying port by synchronizing with and mixing with one or a plurality of spraying ports at the time of the road marking coating. Disperse the imparting material, bury it in the road marking coating layer or attach it to the surface, and spray the function imparting material on the undercoated road marking coating layer and apply the road marking paint on it to function There is a method of coating the imparting material. Usually, the glass beads may be applied to the painted surface after the road marking paint is applied.
[0013]
The coating film structure formed when the road marking coating method of the present invention is carried out includes a melt-type road marking paint layer that is in close contact with the road surface, and a road surface that is coated on the melt-type road marking paint layer and includes the function-providing material. It is a road marking coating film structure comprising a marking paint layer. The melt-type road marking paint layer is applied directly to the road surface, so that it shows resistance to peeling from the road surface and prevents buckling, and the visibility by coating with protrusions formed at regular intervals, and tires Rhythmic sound generated when the car runs on the lane markings the driver.
[0014]
The road marking paint layer on the melt-type road marking paint layer ensures the thickness of the road marking coating film by the appropriate addition of the function-imparting material, and the retroreflection by the addition of the retroreflective material or the addition of the slip resistance material Exhibits slip resistance. The formed coating film structure has a road marking paint layer thickness including the function-imparting material of around 1.0 mm, so that high durability and visibility can be obtained on the road surface of drainage pavement as well as normal pavement, Moreover, the coating can be performed with almost no gaps between the drainage pavements.
[0015]
In addition, the coating device includes a paint heating device, a road marking paint spray gun that passes through the heating device, and a hybrid spraying device of the function-imparting material on the powered self-propelled carriage, and the road marking is provided. A paint film thickness complementing material, a retroreflective material or a slip resistance material was allowed to be present in the paint layer. A plurality of spray ports of the road marking paint spray gun may be provided across the spray port of the function imparting material spray device. As a result, the function-imparting material can be sprayed onto the sprayed road marking paint, and then the road marking paint can be sprayed onto the upper portion of the road marking paint to cover it, thereby further increasing the coating thickness.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The road marking coating method, road marking coating structure and coating apparatus of the present invention will be described below in detail with reference to the drawings. As shown in the right side of FIG. 1, in the present invention, first, a rib of the melt type road marking paint layer 22 is directly applied to the road surface 21 at regular intervals or at random with a general-purpose spot coating device 20. Solidify. Spraying the road marking paint of the water-based paint that has been heated after the coating is solidified by air or airless, and at the same time, spraying the function-imparting material from the spraying port 5 behind the paint spraying gun 3 to ensure a predetermined coating thickness. To do. A liquid road marking coating device 23 that makes this possible is seen on the left in FIG.
[0017]
2 is a plan view of the liquid road marking coating apparatus of the embodiment, FIG. 3 is a front view, FIG. 4 is a rear view, and FIG. 5 is a cross-sectional view of a heat exchanger as a paint heating apparatus. In this coating apparatus, a paint heating device 7 is provided on a battery-powered self-propelled carriage 1, and a liquid road marking paint spray gun 3 is connected to the paint heating device 7 so as to be disposed downward in front of the device. ing. In addition to this, a coating thickness-complementing material, a retroreflective material, a slip resistance material, or a function-providing material spraying device 4 of a mixture is arranged, and the spraying port 5 of the spraying device 4 is set to the spray paint direction (see FIG. 3). A generator 6 is also provided on the powered self-propelled carriage 1, and the paint heating device 7 for the heating medium to be sent to the paint heating device 7, an airless unit, traveling power as required, control devices for various valves, etc. Power to
[0018]
The paint in the paint tank 8 on the self-propelled carriage 1 is transmitted to the paint feed pipe 10 by the airless unit 9 and guided to the paint spray gun 3 through the heat exchanger 2 as the paint heating device 7. As shown in FIG. 5, the heat exchanger 2 is provided with an inlet 2a and an outlet 2b for the heat medium in the casing, and appropriately heats the paint passing through the paint feed pipe 10 spirally provided inside the casing. . An airless unit 9 that sends pressurized air to the paint spray gun 3 and the function-imparting material spraying device 4 is also disposed on the self-propelled carriage 1 and connected by air conduits 12 and 13, respectively. Near the handle 14 provided behind the self-propelled carriage 1 is a control unit 18 having a switch group 15 including a switch of the heating device 7, a start button 16, and a paint spray button 17.
[0019]
According to such an apparatus, the coating thickness is complemented by the function imparting material spraying device 4 facing the direction of the paint sprayed by the spray port 5 while spraying the paint from the paint spray gun 3 whose spray port is directed downward. Materials, retroreflective materials or slip resistant materials can be sprayed and any or a mixture of these can be present in the spray paint to increase the coating thickness. Moreover, it becomes a road marking without delamination of a coating film.
[0020]
FIG. 6 and FIG. 7 show a plan view and a front view of an example in which two spray ports of the paint spray gun 3 are provided with the spray port 5 of the function imparting material spray device 4 sandwiched in the front-rear direction. When the function-imparting material is sprayed from the spraying port 5 of the spraying device 4 onto the paint applied by the paint spraying gun 3a in the front of the apparatus traveling direction (arrow direction), the paint is sprayed again by the paint spraying gun 3b at the same time. It is done. Since the spraying direction from the spray port 5 of the function imparting material spraying device 4 is the spray direction of the paint by the rear paint spray gun 3b, the function imparting material is mixed in the paint by the rear paint spray gun 3b. Coated.
[0021]
FIG. 8 shows an enlarged view of the main part of an example in which two spray ports of the paint spray gun are provided across the spray port 5 of the function-imparting material spray device 4 and the spraying state is changed. The function-imparting material is sprayed from the spraying port 5 of the spraying device 4 on the paint applied by the front spraying port 3a as the apparatus advances. As the apparatus further proceeds, the paint is further applied and coated thereon to form a road marking coating having an increased thickness.
[0022]
FIG. 9 is a cross-sectional view of a road marking coating structure obtained by carrying out the present invention. In this example, the display of fine retroreflective material (beads) formed on the surface layer is omitted. A melt-type road marking paint layer 22 is in direct contact with the road surface 21, and a paint layer 19 containing a function-imparting material is coated thereon. The road surface 21 is a drainage pavement similar to the example of FIG. In the conventional structure shown in FIG. 10, since the two-component rib coating film 32 is formed on the base paint 31 on the road surface 21, it is easy to peel off or sink, but in the present invention, the molten road marking paint layer is formed on the road surface 21. Since the direct rib-shaped rib shape is formed by coating 22, the coating material enters the water-permeable gap and hardens, so that neither peeling nor depression is likely to occur. Since the paint is coated on this, the durability is further increased.
[0023]
【The invention's effect】
According to the road marking coating method and road marking coating structure of the present invention, coating signs are dark even in drainage pavement that is expected to be adopted in the future, providing more visible road marking, and future lane changes Even if the road marking is erased for such reasons, it is only necessary to change the color of the paint to be sprayed.
[0024]
Also, do not become the coating device and the excess capacity in small-scale construction work is economical, it is only a simple traffic regulations in the vicinity of the entrance and exit of such interchanges and service area, in addition, function-imparting material the spray port of the paint spray gun Since a plurality of the spraying ports of the spraying device are provided, the paint layer can be thickened. As a result, when the coating apparatus of the present invention is used, the road marking coating film becomes thicker, and the molten road marking coating layer formed directly on the road surface is coated and covered over a long period of time. To show visibility.
[Brief description of the drawings]
FIG. 1 is a side view showing a state in which a road marking coating method of the present invention is being carried out.
FIG. 2 is a plan view of a road marking (paint) coating apparatus according to an embodiment.
FIG. 3 is a front view of the coating apparatus.
FIG. 4 is a rear view of the coating apparatus.
FIG. 5 is a cross-sectional view of a heat exchanger as a paint heating device.
FIG. 6 is a plan view of a road marking coating apparatus according to another embodiment.
FIG. 7 is a front view of the coating apparatus.
FIG. 8 is an enlarged view of a main part of a road marking coating apparatus according to another embodiment.
FIG. 9 is a cross-sectional view of a road marking coating structure obtained by carrying out the present invention.
FIG. 10 is a cross-sectional view of a conventional road marking coating structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Self-propelled trolley 2 Heat exchanger 3 Paint spray gun 4 Function grant material spraying device 5 Spraying port 6 Generator 7 Paint heating device 8 Paint tank 9 Airless unit
10 Paint feed pipe
11 Compressor
12 Air conduit
13 Air conduit
14 Handle
15 switches
16 Start button
17 Paint spray button
18 Control unit
19 Paint layer
20 Spot coating equipment
21 Road surface
22 Melting type road marking paint layer
23 Road marking (paint) coating equipment

Claims (3)

  A water-based road marking paint in which a spot-like, rib-shaped, heat-melting road marking paint layer that has entered into a water-permeable gap on a drainage road surface that has not undergone undercoating and has been cured and adhered is covered with a function-imparting material on the middle or upper layer. Drainage road marking coating structure coated with.   On a powered self-propelled carriage, a heat exchanger in which a heat medium inlet 2a and an outlet 2b are provided in a casing as a water-based paint heating device, a spray gun for a road marking paint via the paint heating device, A drainage road marking coating device coating apparatus in which a function-dispersing material hybrid spraying device is arranged so that a coating thickness complementing material, a retroreflective material, or a slip resistance material is present in the road marking coating layer. The drainage road marking coating film according to claim 2 , wherein the heat exchanger as a water-based paint heating device has a function of appropriately heating the paint passing through the paint feed pipe 10 spirally provided inside the casing. Coating equipment.

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