JPH03293410A - Adherent marking tape material for road surface - Google Patents

Abstract

PURPOSE:To make execution of work simple by a method wherein a polymer sheet-like substance is stuck to a road surface through a pressure-sensitive adhesive layer, and the sheet-like substance is coated with a melting marking material for the road surface, making the sheet-like substance integral with the marking material. CONSTITUTION:An adherent marking tape material for a road surface is formed by providing a pressure-sensitive adhesive layer 3 and a liner 4 to the reverse side of a sheet-like substance 2 made of a polymer such as polyethylene, polypropylene or the like that melt at the temperature between 100 deg.C and 180 deg.C. The tape material is then bonded to the road surface through the pressure- sensitive adhesive layer 3. As a melting road marking material 5 that melts at a temperature between 180 deg.C and 250 deg.C is applied over the tape material, the sheet-like substance 2 and the marking material 5 flow, being united into one body, over the road surface and is stuck to the surface by hardening. Beads 6 are then scattered over the marking material 5 and are bonded there.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an adhesive road marking material used for temporary road marking.

(t (Next technology)) Previously, JrS K5665 was used as a road marking material.
There are two types: paint type and melting type. On general roads, fusion-type coatings have become overwhelmingly used these days due to the durability of the coating film and the ability to resume traffic immediately after construction.

However, in order to perform construction using this melting method, the material must be 180%
The drawback is that it cannot be easily constructed because it needs to be heated and melted at ~220°C, and a special coating machine is required to paint it on the road surface. In other words, in the case of partial road repairs or emergency road repairs, even when it was desired to restart traffic immediately after construction, the NAE aircraft was often not available in time. In such cases, is it formal? Until the 8-fusion method is completed, road marking materials in the form of tape have been used for pasting.

This pasting method tape-like road marking material can be easily pressure-bonded to the road surface without using any special equipment because a pressure-sensitive adhesive is provided on the back side of the tape.

(Problem to be Solved by the Invention) However, if this pasting is done temporarily using a road marking material in the form of a formula tape, and then formal construction is performed later using a road marking material of a melting type, the pasting is done on the road surface in the form of a formula tape. It was necessary to remove the marking material for a distance of t1 before applying the molten road marking material.

In other words, the tape-like road marking material is generally made of vinyl chloride resin sheet or thin aluminum film as a base.
Since it is attached to the road surface using a pressure-sensitive adhesive, there are limits to its long-term use on roads with heavy traffic, and its durability is poor.Therefore, the tape-like road marking material cannot be removed. If a regular melt-on road marking material is applied over this, the tape-like road marking material will separate from the road surface, resulting in the melt-on road marking material peeling off as well. was there. However, although it is said that the functional durability of road markings such as road markings is inferior, it is necessary to completely remove the peeling and restore the road surface to a normal road surface by constructing it with official melt-down road marking material. This is extremely time-consuming and difficult work and is a bottleneck in road marking construction.

(Means for Solving the Problems) In order to solve such problems, the inventor of the present invention has conducted intensive studies and found that when installing melt-type road marking materials, the existing adhesive tape type road marking materials are not suitable for pasting. The present invention was achieved by finding a solution to the problem by creating properties and shapes that do not inhibit the adhesion between the melt-type road marking material and the road surface.

That is, in the present invention, a pressure-sensitive adhesive is formed on the back surface of a sheet-like material made of a high molecular weight polymer that melts at a temperature of 100°C or more and 180°C or less, and the sheet-like material is attached to a road surface after being applied. When the sheet material is coated with the meltable road marking material from above, the sheet material becomes integrated with the meltable road marking material so that it does not inhibit the adhesive bond between the meltable road marking material and the road surface. The gist of the characteristic pasting is tape material for road markings.

As mentioned above, conventional adhesive tape-type road marking materials are based on vinyl chloride resin sheets coated with adhesive, fiber webs impregnated with resin, etc., and have improved visibility. Glass beads are sprinkled on the surface to prevent
etc.) are used. In contrast, in the present invention, 1
The first feature is that the substrate is a sheet-like material made of a polymer m-coalescence that melts at a temperature of 00° C. or more and 180° C. or less.

Melting type road marking materials are rated to melt at a temperature of 180°C to 220°C. Therefore, in the case where the pasting of the present invention is carried out with a melting type road marking material without peeling off and removing the markings that have been constructed with a formula tape-like road marking material, It is then integrated with the official melt-on road marking material and firmly adhesively fixed to the road surface.

The melt-type road marking material is melted at a temperature of 180° C. to 220° C., but when it is applied onto a road surface, the temperature is substantially lowered due to heat conduction to the road surface. For this reason, it is necessary for the adhesive tape-type road marking material to be melted at a temperature of at least 180°C or lower; if the melting temperature is higher than this, when applied with the melting type road marking material, it will not be able to melt sufficiently and the adhesion to the road surface will deteriorate. It becomes insufficient. Conventionally, the fiber webs used are made of polyester or polyamide, and the melting temperature is 2.
00℃ or higher. For this reason, even when a melting type road marking material was applied over this, the fiber ribs could not be melted and the adhesion to the road surface was insufficient.

The surface temperature of normal asphalt and concrete roads can reach extremely high temperatures in the summer, reaching temperatures as high as 60-60°C.
It becomes 70℃. For this reason, if the melting point of the sheet material that forms the base of the tape-like road marking material is lower than 100°C, it will soften in the summer and cause tMrIL to be applied to car tires, or it may peel off from the road surface and fail to perform its original function. However, if the melting point of the sheet material that is the base of the road marking tape material of the present invention is 1 or more, which is a problem of traffic safety, the melting point is 1 or more.
The important point of the present invention is that the temperature is 00°C or more and 180°C or less. Examples of high molecular weight polymers having such a melting temperature range include polyethylene, polypropylene, ethylene vinyl acetate copolymer, and the like.

Further, the sheet-like material as used in the present invention refers to films, sheets, woven or knitted fabrics, nonwoven fabrics, paper, and the like. Among these, the most preferred form is a porous fibrous web such as a woven or knitted fabric or a nonwoven fabric, and when compared including the price, a nonwoven fabric, especially a long fiber nonwoven fabric called spunpond, is the most suitable.

The production of such sheet-like products using the above-mentioned high molecular weight polymers is already commonly practiced and can be easily carried out.

Using this sheet-like material as a base, a pressure-sensitive adhesive layer is provided on the back surface.

The adhesive used here is a pressure-sensitive type that can be easily applied by pressing the tape material to the road surface, such as an acrylic ester copolymer with a thickness of at least 20 microns, preferably 200 microns or more. I can't get anything.

If the surface of the sheet-like product is a long fiber nonwoven fabric, the sheet-like product can be used as is, but it may be subjected to various treatments to improve visibility. First, normal road markings are white and yellow. A white pigment such as titanium oxide is often added to the high molecular weight polymer forming the sheet-like material as a matting agent, and in this case, it can be used as is as a white pigment. In the case of yellow, the sheet itself is colored with a dye or pigment, or a resin layer containing a yellow colorant is applied to the sheet by impregnation, coating, lamination, or other methods.

Further, it is also possible to reinforce the strength of the nonwoven fabric having a length of 1 m by the same resin processing. Examples of the resin used at this time include, in addition to the same resin as the polymer forming the sheet material, acrylonitrile-butadiene polymer, neorene elastomer, and vinyl chloride polymer. However, the amount of these resins used is limited because they must not prevent the sheet material from melting when the melt-type road marking material is applied.

Furthermore, in order to improve visibility, glass beads may be scattered and fixed on the surface of the tape material. Straight 8!100-100
When 0 micron glass particles are sprinkled on the tape surface, a retroreflective effect is obtained, so visibility is significantly improved.

The drawing is a cross-sectional view of the tape material of the invention. Illustrated tape material 1. is a sheet-like material 2. as a base, and an adhesive layer 3 on the back side. 4. A protective liner (release paper) is provided. is covered by. The surface side is a colored resin layer 5. glass beads 6, sheet-like material 2. It is fixed at The adhesive type road marking tape material constructed in this manner can be used in the same manner as conventional adhesive type marking materials, and its marking effect is comparable or superior. Furthermore, if you want to redo the construction with official melt-in-place road marking material, you can simply apply it over the top without peeling it off. 2 from 180℃
When the molten road marking material melted at 00°C is applied over the adhesive tape material of the present invention, the sheet-like material that is the base of the tape material melts and becomes integrated with the molten road marking material to form a road surface. It firmly adheres to the road surface as it cools.

The pressure-sensitive adhesive attached to the back of the tape material is also heated by the molten road marking material, reducing its viscosity and integrating the tape material and the FA fused road marking material, which bites into minute irregularities on the road surface and makes it stronger. It becomes attached to.

(Example) A detailed explanation will be given below based on an example. A 50 gird long fiber nonwoven fabric made of polyethylene was prepared as a base sheet. Urethane resin solid molecules fi as a white pigment in water-soluble urethane resin (solid content 50%)
A resin solution containing 20% titanium oxide mixed and dispersed in ffi was prepared, and 2% was applied to the surface of the polyethylene long fiber nonwoven fabric.
Glass beads having an average particle size of 500 microns were sprayed at a concentration of 5 g/I, and then dried to fix the glass beads. Furthermore, the film thickness after drying of an acrylic acid ester copolymer-based solvent-type pressure-sensitive adhesive on the female pattern paper was 300 mm.
It was applied to a micron thickness, dried, and then attached to the back of a sheet-like object. The sheet material thus obtained was slit to a width of 15 cm to obtain a tape material according to the method of the present invention.

Next, this tape material was applied to the asphalt road surface. Since this tape material has a long fiber nonwoven fabric as its base, it is extremely soft and can closely follow the unevenness of the road surface, so it was able to be firmly adhered to the road surface. Furthermore, because the glass beads were dispersed, visibility at night was equivalent to that of regular fused road marking materials.

For comparison, a commercially available vinyl chloride road marking tape was similarly applied to the road surface. This one did not use glass beads, so night visibility was poor. After being left for 3 days, the tape marking of the present invention maintained its excellent performance as a road marking without any major changes other than a slight staining of the surface.

There were no major problems with the comparison tape, but the edges of the tape were slightly curled.

Next, a regular fused road marking material was applied over this marking. Heavy construction was carried out on the tape using a type 3, No. 2 road material specified in JIS K 5685 at a melting temperature of 200° C. using a hand-pull redoctor. When the tape material was coated by the method of the present invention, the tape material melted and became integrated with the fusion type road material, thereby firmly adhering to the road surface. On the other hand, when coating is applied over a conventional commercially available tape, the vinyl chloride sheet that is the base of the tape shrinks due to heat, and the entire tape lifts off the road surface. has peeled off.

(Effects of the Invention) The pasting of the present invention involves temporary installation of road markings using a sloped type road marking tape material, and when re-installation is performed using a regular melting type road marking material, the tape material can be peeled off M11? ! Since coating can be applied from above without A, construction can be carried out very easily and safely.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the road marking tape material of the present invention. 2...sheet-like material, 3...adhesive layer, 4...liner (release paper),
5...Colored resin layer, 6...Glass beads.

Claims (1)

[Claims] 1. A pressure-sensitive adhesive layer is formed on the back side of a sheet made of a high molecular weight polymer that melts at a temperature of 100°C or more and 180°C or less. When the sheet material is coated with the meltable road marking material, the sheet material becomes integrated with the meltable road marking material, thereby inhibiting adhesive bonding between the meltable road marking material and the road surface. A road marking tape material that is characterized in that it does not.