JPH0462210A - Moulded road sign - Google Patents

Abstract

PURPOSE:To prevent damage to a moulded road sign display by passage of vehicle as well as shorten operating time period for road construction by a method in which a composition consisting of glass beads, a colourant, a granular material, and a binder is moulded to have a water permeability. CONSTITUTION:Glass beads, a colourant, a granular material, and a binder are mixed together in a factory to form a moulded road sign, and the sign is bonded by a superquick setting adhesive to a place or coated with a primer and bonded. The granular material is an elastic rubber material to give it a flexibility. When not in use, the upside of a tape is coated and hardened, and the display portion is notched. The operation of construction is made easier thereby and the construction time and the time until traffic release can be shortened. Also, the breakage of the road sign by passage of vehicle can be prevented by giving it a flexibility enough to follow uneven road surface. The durability of the road sign can thus be raised.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water-permeable road marking molded body for construction on a road surface.

[Conventional technology]

Conventionally, road marking materials such as room temperature, heating, melting and pasting tapes used for crosswalks, center lines, boundary lines, outside lines, etc. have no permeability to rainwater due to the road marking itself. For road markings made of these materials, the glass beads that give the surface retroreflectivity are submerged in the rainwater film during rainy weather and nighttime, and the retroreflectivity is lost (and the glass beads become invisible). It is disclosed in Japanese Patent Application No. 2-18950 that a road marking material having a water-permeable surface and a good drainage property is effective as a method of imparting visibility. This method is applied directly to the road surface, which has the advantage of not being affected by unevenness, but has the disadvantage that it is difficult to work with and takes time to clear to traffic.

(Problems to be Solved by the Invention) Therefore, the present invention does not directly apply road marking materials with good surface drainage properties to the road surface (by molding them in advance, the workability of the conventional technology is poor). This is an attempt to solve the disadvantage that it takes time to open the vehicle to traffic, and at the same time, it has been devised and developed to prevent defects such as cracking or peeling that may occur in the molded body. We were able to complete a water-permeable road marking molded body that is sufficiently durable and flexible enough to follow the unevenness of the road surface.

[Means and effects for solving the problem] Patent application No. 2-18
The road surface marking material with good surface water drainage disclosed by No. 950 uses a resin mortar-like material applied directly to the road surface.
It is necessary to mix materials and clean painting tools at the construction site, making it unsuitable for road marking construction, which is a mobile task. Moreover, it has the disadvantage that it cannot be opened to traffic for more than 20 minutes after being paved until it completely hardens. In the present invention, a water-permeable road marking material is pre-molded in a factory, etc., and can be installed at the construction site by pasting it with an ultra-fast curing adhesive or by applying a primer and pressing the molded body. Therefore, it is suitable for mobile work and can be opened to traffic quickly. The time required to open the building to traffic is within 15 minutes if an ultra-fast curing adhesive is used, and within 5 minutes if the molded body is crimped after applying a brimer.

In addition, in order to prevent defects such as cracking or peeling that may occur in a molded body, which is an object of the present invention, when installing a water-permeable road marking molded body on a road surface, it is necessary to The vehicle itself must have sufficient flexibility to follow uneven road surfaces. One method is to give flexibility to the water-permeable road marking molded body itself, and the other is to use a flexible adhesive tape on the lower layer and bend the road marking molded body with water-permeable surface in various directions. There is a way to install them discontinuously.

The water-permeable road marking molded body of the present invention is, for example, 13
Road marking material with water permeability of 0 seconds or less is coated on a release paper, cured, and then the release paper is peeled off to form a sheet-like molded product, or a pressure-sensitive adhesive is applied to the lower surface and a release paper is attached. A molded body in the form of an adhesive road marking tape, or a molded body in the form of an adhesive road marking tape, which is obtained by coating the top surface of a commonly used adhesive road marking tape with a water-permeable road marking material. by applying the road marking material to the desired thickness, e.g.
(see page 5-end), for example, in the form of a tape.

Accordingly, the present invention provides a water-permeable road marking molded body comprising glass beads, a colored pigment, granules, and a binder.

The glass beads used in the present invention have a particle size of 0.1 to 2.
, 10 to 70 parts by weight of 5 mm, preferably 15 to 70 parts by weight
50 parts by weight is suitable. Coloring pigment: 3 to 15 parts by weight,
Preferably 5 to 10 parts by weight are suitable. Furthermore, the glass beads can also be colored in advance with a colored pigment and resin.

Further, the particle size is 0.3 to 5.0 mm, preferably 0.5 mm.
~4.0mrm granular aggregate and/or rubber elastic body in an amount of 15 to 87 parts by weight, preferably 40 to 80 parts by weight. As the granular aggregate, for example, ceramic granular aggregate can be used. Rubber elastic bodies include amorphous rubber chip-like particles such as tire rubber and foamed urethane rubber, or cylindrical, hemispherical, and spherical particles such as soft vinyl chloride, vinyl acetate-ethylene copolymer, ethylene-ethyl acrylate, and olefin elastomer. resin granules can be used. However, the use of amorphous rubber chip-like granules increases the cohesive force of the water-permeable road marking molding,
Although it prevents chips from passing by vehicles, it also reduces water permeability, so when using them, do not use colored pigments in powder form, but instead color the glass beads, granules, and binders in advance, or use small It is necessary to take measures to avoid reducing water permeability by increasing the voids, such as not using glass beads or granular materials. Furthermore, when using resin granules, the cohesive force of the water-permeable road marking molded body tends to decrease somewhat, so it is preferable to add fibers for reinforcement. Furthermore, a mixture of resin and fluorescent pigment can be used as resin granules to provide an auxiliary effect on night visibility. A water-permeable road marking molded body using a rubber elastic body is particularly suitable for a molded body in the form of an adhesive road marking tape whose lower surface is coated with a pressure-sensitive adhesive and a release paper is attached.

In addition, binders include one-component moisture-curing urethane resin, two-component urethane resin, epoxy resin, acrylic syrup, unsaturated polyester resin, thermoplastic polyamide resin, polyester resin, polyisoprene resin, ethylene-ethyl acrylate resin, and chlorine. Suitable amounts of resins such as polyethylene copolymers, olefin elastomers, and acetic acid-ethylene copolymer resins are 5 to 20 parts by weight, preferably 9 to 15 parts by weight. Moreover, these resins can be colored in advance with a coloring pigment. Furthermore, 30 to 50 parts by weight of Portland cement can be used as an inorganic binder.

Even if the water-permeable road marking molded body of the present invention is pasted on the road surface without glass beads being adhered to the surface, the surface will gradually wear down and the glass beads mixed in will be exposed, so that visibility at night can be achieved. However, in order to obtain night visibility immediately after construction, it is necessary to adhere glass beads to the surface of the water-permeable road marking molded body when molding it. As an example, when molding, room-temperature road marking paint (JIS
There is a method of diluting K 56651) with thinner and spray painting it so thinly that it does not fill the voids on the surface of the water-permeable road marking molding, and then immediately scattering glass beads.

It was previously described that the use of a rubber elastic body is suitable as a method of giving the water-permeable road marking molded body of the present invention flexibility enough to follow the unevenness of the road surface, but when the rubber elastic body is not used, A water-permeable road marking material is coated on the top surface of a commonly used stick-on road marking tape, and after curing, only the water-permeable road marking material portion is coated with a length and width of 2 to 6 Ω, preferably 3 to 5 cm. By making incisions in a grid pattern, the water-permeable road marking molded body of the present invention can be bent to follow the unevenness of the road surface when it is applied to the road surface, thereby preventing cracking and peeling. I can do it. In addition to the commonly used adhesive road marking tapes, adhesive tapes that can be used include road marking materials that are not sprinkled with glass beads, or if they are the same color as the road surface and have good flexibility and durability. be able to.

The present invention will be explained in more detail below using Examples and Comparative Examples.

Example 1 Particle size 1. O~2.5mm (7) Glass beads: 4 parts by weight Titanium oxide: 10 parts by weight Urethane foam rubber chips with a particle size of 1.2 to 2.0 m+* 850 parts by weight Mixture 10
Add 12 parts by weight of moisture-curing urethane resin to 0 parts by weight, mix and stir, then paint the resin mortar onto release paper to a thickness of about 51 mm, and scatter glass beads to form a water-permeable road marking molded body. Obtained.

Example 2 (1) Titanium oxide colored glass beads with particle size 1.0-2.51: 40 parts by weight Particle size 0.5-3.01
(2) Titanium oxide colored ceramic white aggregate:
30 parts by weight Foamed urethane rubber chips with a particle size of 0.6 to 0.8 aug = 30 parts by weight Mixture 1
To 00 parts by weight, add 16 parts by weight of a resin prepared by mixing (3) 12 parts by weight of a titanium oxide colored epoxy resin and 4 parts by weight of a modified aliphatic polyamine immediately before use, and place the mixed and stirred resin mortar on release paper. It was coated to a thickness of 5a+s+ and glass beads were scattered to obtain a water-permeable road marking molded body.

Here, (1) titanium oxide colored glass beads and (2)
The titanium oxide colored ceramic white aggregate used was glass beads or ceramic white aggregate: 100 parts by weight titanium oxide = 2 parts by weight, moisture-curing urethane resin = 7 parts by weight, mixed, stirred, and dried.

(3) Titanium oxide colored epoxy resin is specially modified low viscosity epoxy resin: 100 parts by weight (viscosity 95
0 cps/25°C) Titanium oxide: 50 parts by weight was used.

Example 3 Particle size 0.1-2.5 - Peng glass beads: 30 parts by weight Titanium oxide: 7 parts by weight Particle size 0.5
~3.0+m- ceramic white aggregate: 32.5 parts by weight Cylindrical olefin elastomer with a diameter of 2.0 to 3.0 mm and a length of 2.0 to 4.0 mm: 30 parts by weight 5 glass tiles with a length of 31mff1 and 12
To 100 parts by weight of a 0.5 part by weight mixture, 9 parts by weight of a resin prepared by mixing 6 parts by weight of an epoxy resin and 3 parts by weight of a modified aliphatic polyamine immediately before use are added, and the mixed and stirred resin mortar is placed on release paper. A chloroprene rubber-based adhesive is applied as a synthetic rubber-based pressure-sensitive adhesive to the back side of the water-permeable road marking molded body, which is coated with a thickness of approximately 5m and sprinkled with glass beads, and a release paper is pasted to make it water-permeable. A road marking tape with adhesive properties was obtained.

Example 4 Glass beads with a particle size of 0.1 to 2.5 mm: 15 parts by weight Titanium oxide: 5 parts by weight Particle size 0.5
~3. 100 parts by weight of a mixture of 280 parts by weight of OIWm ceramic white aggregate to 1 part by weight of moisture-curing urethane resin.
0 parts by weight, mixed and stirred resin mortar was painted on a road marking tape to a thickness of approximately 5 m, and glass beads were scattered on the molded body, and only the resin mortar layer was cut into a lattice of 5C11 in length and width. A water-permeable adhesive road marking tape was obtained.

Example 5 Glass beads with a particle size of 0.1 to 2.5 mm: 15 parts by weight Titanium oxide = 5 parts by weight Particle size 0.5
~3.0 mm ceramic white aggregate = 80 parts by weight 1 part moisture-curing urethane resin to 100 parts by weight mixture
0 parts by weight was added, mixed and stirred, the resin mortar was coated on release paper to a thickness of about 5 mm, and glass beads were scattered to obtain a molded body.

Example 6 Glass beads with a particle size of 1.0 to 2.5 mm: 30 parts by weight Titanium oxide: 10 parts by weight Particle size 2.0
~5.Portland cement: 40 parts by weight for 100 parts by weight of a mixture of 260 parts by weight of On++++ ceramic white aggregate
: 16 parts by weight water reducing agent or AE
Foaming agent: 0.4 parts by weight Aluminum powder: Add 20 parts by weight and mix the mortar, pour into a mold with a diameter of 15 cm and a height of 3 cm, and sprinkle glass beads to obtain a water-permeable embedded road marking molded body. Ta.

Comparative Example 1 Glass beads with a particle size of 0.1 to 2.51: 60 parts by weight Titanium oxide: 10 parts by weight Particle size of 0.6 to 2.51
0.8+wm urethane foam rubber tip
: To 100 parts by weight of the 30 parts by weight mixture, add 12 parts by weight of the resin mixed immediately before use with 8 parts by weight of the epoxy resin and 4 parts by weight of the modified aliphatic polyamine, and place the mixed and stirred resin mortar on release paper for about 100 parts by weight. Painted to the thickness of five cabinets,
A molded body was obtained by scattering glass beads.

Comparative Example 2 Buried road marking molded product. Product name: Buried type Atomline C
P (manufactured by Atom Chemical Paint Co., Ltd.) Composition: Glass beads 16% by weight Colored pigment 101/Extender pigment 44〃 M 30〃 Total 100〃 Comparative test 1 (in-house test road surface construction) Water-permeable road markings of Examples 1 to 5 In-house test road construction was carried out using the molded body, water-permeable adhesive road marking tape, and the molded body of Comparative Example 1, and after one month, the state of edge chipping, night visibility when wet, and water permeability were confirmed. did.

The test results are shown in Tables 1 and 2.

Test Method The water-permeable road marking molded bodies of Examples 1.2 and 5 and the molded body of Comparative Example 1 were coated with a fast-curing adhesive paint as an adhesive to a thickness of approximately 2 g+m on the road surface on which they were installed. ,
Immediately place it on top and press it down until the adhesive paint slightly protrudes and install it on the road surface. For the water permeable adhesive road marking tape of Example 3.4, apply a special brimer to the road surface, and after drying, place it on the road surface completely. I hit it from above with a rubber mallet to make it adhere to the road surface. Here, the size of each specimen was 15 cm in width and 50 cm in length. The test is 1
The state of chipped edges after 10 months was visually confirmed by vehicle headlight light from a distance of 10 months, and the water permeability was determined by checking the inner diameter of
．． 61 with a length scale of 30C1, wrap the bottom of the glass tube with clay, pour water into the glass tube until about the 8th minute, and time (seconds) for the water level to reach 1cm from 11cm. was measured with a stopwatch.

From the results shown in Table 1, it can be seen that the water permeability is visible within about 130 seconds and can be used as a water permeable road marking molded body. In Comparative Example 1, the particle size of the rubber elastic body used is quite small, and the powdered coloring pigment is used as it is, so the voids are filled considerably and the water permeability is poor, resulting in poor visibility and undesirable small foamed urethane rubber chips with a particle size of 0. etc., the glass beads and the granular aggregate used in combination should be colored in advance as in Example 2, or
It is necessary to take measures such as not using glass beads with small particle sizes.

In addition, the water-permeable road marking molded body does not show any edge chipping even after a month has passed and a vehicle passes through it.

This seems to be an effect of using rubber elastic particles to impart flexibility.

Table 2 The results in Table 2 show that molded products that do not use rubber elastic granules have some edge chipping after one month, but even products that use the same resin mortar do not show any damage on the adhesive road marking tape. It can be seen that the parts that are painted and have notches do not chip at the edges even when a vehicle passes by. By making a notch, it can be bent both vertically and horizontally.
This is thought to be due to the fact that it is difficult to create floating parts when applying it to the road surface. In addition, the chipped edges in Example 5 were thought to have been slightly floating during construction due to the uneven road surface, and were all caused by slow climbing. It is considered that the one of Example 5 is preferably used in a place where few vehicles pass.

Comparative Test 2 The water-permeable road marking molded product of Example 6 and the commonly used embedded road marking molded product of Comparative Example 2 [Product name:
Buried type Atom Line CP (manufactured by Atom Chemical Paint Co., Ltd.)
1 compressive strength test and wet night visibility were confirmed.

The test results are shown in Table 3.

Test method: The water-permeable road marking molded product of Example 6 and the embedded road marking molded product of Comparative Example 2 were each molded in a 4 x 4 x 16 CI+ iron mold, and after curing for 7 days, the compressive strength was determined. Compressive strength was measured using a testing machine. Furthermore, diameter 15C11X height 3C
The wet night visibility of the water-permeable road marking molded product of Example 6 and the buried type road marking molded product of Comparative Example 2 (product name: buried type Atomline CP) was 10 points higher than that of vehicle headlights. I checked it by shining a light on it.

It can be seen that even when an inorganic binder such as cement is used, there is sufficient strength and night visibility when wet is not impaired. Therefore, the molded product has a sufficient thickness of about 31 mm, and is water-permeable even when used for buried type markings that are not affected by uneven road surfaces (because they are installed by drilling holes in the road surface during construction). It can be used as However, when drilling holes in the road surface during construction, it is necessary to install a permeable layer on the road surface itself.

[Effects of the Invention] Conventional road markings with a surface that drains water well have a WA-like effect in that road markings that could not be seen during rainy days or at night can be seen for a long period of time, but from the point of view of road marking construction. The work required is special and the workability is poor. The road marking molded body of the present invention, which has water permeability and is not affected by unevenness of the road surface, can be used with the road marking construction method currently used in the department, is more realistic, and has a revolutionary effect on traffic safety. It is something to play.

Claims (1)

[Scope of Claims] 1) A water-permeable road marking molded body comprising glass beads, a colored pigment, granules, and a binder. 2) The water-permeable road marking molded body according to claim 1, wherein the granular material is an aggregate and/or a rubber elastic body. 3) A water-permeable road marking molded body obtained by adhering glass beads to the surface of the water-permeable road marking molded body according to any one of claims 1 and 2 during molding.