JP2760710B2 - Reflective non-slip sheet material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention is used as a road marking for traffic safety, a lane marking in a parking lot, a lane marking in a ferry boat, a transport ship, etc., and has a retroreflective effect in a dark place. The present invention relates to a reflective non-slip sheet material having an anti-slip effect at the same time.

[0002]

2. Description of the Related Art Conventionally, as a method of giving a reflective property to a median strip, a lane marking, a safety zone sign, etc. of a road, a method of applying a resin mixed with microspheres of hot-melted glass to a road surface, and further applying a glass to the coated surface. Fine spheres are dispersed and fixed, and a retroreflective effect is provided by an inorganic colored reflection element mixed in resin, or glass microspheres are fixed and fixed together with a reflection element on a base sheet, and this is fixed to the road surface with an adhesive. There are things that are designed to be attached to such as. In addition, as a method of imparting anti-slip properties, inorganic pulverized particles are attached to one side of the base sheet, and this is adhered to the stairs of the building or the floor of the vehicle, etc. There is something to be secured.

[0003]

In order to provide a reflection function in these conventional examples, the refractive index is 1.5 to 2.0,
When glass microspheres having a particle size of about 100 to 1000 microns are scattered and provided on the surface of the resin on the road surface, the glass microspheres are in a state where the head protrudes from the resin surface and are used for tires of automobiles, motorcycles, bicycles, etc. There was a problem that the frictional resistance was reduced, slippery and often resulted in a slip accident.

[0004] Usually, the headlights that are turned on when the car is running on the road at night are at a height of about 60 to 70 cm from the road surface, and the optical axis of the lights illuminates 50 m ahead and 100 m ahead. The incident angle of the light on the road surface at this time is about 89 degrees or more with respect to the road surface normal, and the light is incident at an angle close to a right angle with respect to the road surface normal. However, in the case where the glass microspheres are directly scattered on the surface of the conventional road surface display as described above, the glass microspheres are arranged almost parallel to the road surface, and the retroreflective performance cannot be said to be good. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to maintain a high reflection performance even when the incident angle with respect to the road surface normal is large, and to impart slip resistance to a conventional slippery road surface. It is assumed that.

[0006]

SUMMARY OF THE INVENTION In order to solve this problem, a reflective non-slip sheet material according to the present invention is characterized in that pulverized particles are formed on an adhesive resin layer provided on the surface of a sheet having a back surface having adhesiveness. A glass having a reflective layer on a part of the spherical surface on a surface other than the tip end of a part of the pulverized granules among the surfaces of the pulverized granules exposed from the adhesive resin layer. The gist of the invention is to adhere the microspheres.

[0007]

In the above construction, the pulverized granules are polygonally irregular and have, for example, an average diameter of about 100 to 1500 microns. When a sheet material having such pulverized particles is used, the pulverized particles on the surface face all angles, By placing reflective glass microspheres on the inclined surface of the crushed granules, light at multiple angles is incident on the light projected from one direction at the top of the crushed granules, so that a wide range of reflectivity is provided. Can be. That is, the angle of incidence of light with respect to the road surface normal is greatly improved by the crushed particles,
High retroreflective performance can be obtained.

In addition, since the glass microspheres are removed from the tip of some of the pulverized particles on the surface of the pulverized particles exposed from the adhesive resin layer, the frictional resistance is not reduced, and good An anti-slip effect is also obtained.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. Example 1 In FIGS. 1 and 2, a first adhesive resin layer 2 was applied on a plastic support sheet 1 having a thickness of 80 μm in a wet state with a thickness of about 110 μm and provided with a semi-dry first adhesive resin. On the layer 2, ground granules 3 of a # 24 particle size made of a sludge-melted slag cooled solid are uniformly provided and provided, and the ground granules 3 are naturally buried in the first adhesive resin layer 2. afterwards,
The first adhesive resin layer 2 is dried by heating, and
Is fixed to the first adhesive resin layer 2. The thickness of the first adhesive resin layer 2 after being heated and dried in this way was about 60 microns. In this state, about 30% of the height of the crushed granules 3 is buried in the first adhesive resin layer 2. Further, in order to firmly fix the pulverized particles 3 to the first adhesive resin layer 2, the second adhesive resin having a thickness of about 230 microns in a wet state is placed on the pulverized particles 3 fixed to the first adhesive resin layer 2. The layer 4 was applied and provided, and then the second adhesive resin layer 4 was dried by heating, so that the thickness of the second adhesive resin layer 4 was about 120 microns. In this state, the height of the crushed granules 3 is about 20-40.
% Is buried in the second adhesive resin layer 4.

[0010] Separately 5 in the wet state about
The pressure-sensitive adhesive layer 6 was applied in a thickness of 200 μm, and was then dried by heating. The thickness of the pressure-sensitive adhesive layer 6 was about 100 μm. Then, this pressure-sensitive adhesive layer 6 was laminated on the back surface of the support sheet 1 and laminated to prepare a non-slip sheet before attaching the glass microspheres.

Next, a description will be given of a reflector for imparting retroreflection to the anti-slip sheet with reference to FIG. 3. A non-adhesive resin of low-density polyethylene having a thickness of about 40 μm is provided on a support 7 made of polyester film. Layer 8
The glass microspheres 9 having a refractive index of 1.92 and a diameter of 40 to 50 microns are sprayed on the surface of the non-adhesive resin layer 8 and heated at 110 ° C. for 3 minutes to make the glass microspheres 9 equivalent to about 50% of the diameter. Embedded in the non-adhesive resin layer 8, and apply a transparent white resin or a transparent colored resin to the non-embedded spherical surface of the glass microspheres 9 along the spherical surface in a thickness of 1 to 3 μm and dry the resin layer.
After the formation of 10, an aluminum film having a thickness of about 800 mm was deposited thereon to form a light reflection film 11. Further, a polyester-based thermocompression-bonding adhesive solution was applied from above the light reflecting film 11, and then dried to form an adhesive layer 12.

The adhesive layer 12 of the retroreflective material thus produced is superimposed on the exposed surface of the crushed granules 3 of the non-slip sheet material, and united by heating. Then, the support 7 was peeled off from the interface between the non-adhesive resin layer 8 and the glass microspheres 9 to complete a reflective non-slip sheet material.

The non-buried top of the crushed granules 3 composed of the sludge molten slag has a sharp pointed tip, and when the retroreflective material is united by heating, some of the crushed granules 3
The tip of the crushed granular material 3 penetrates the non-adhesive resin layer 8 and protrudes, and no glass microspheres 9 are attached to the tip of the protruding crushed granular material 3.

Example 2 In the process of manufacturing the retroreflective material shown in FIG. 3 used in Example 1, after the glass microspheres 9 were embedded in the non-adhesive resin layer 8,
A transparent white resin or a transparent colored resin is applied to the non-buried spherical surface of the glass microspheres 9 along the spherical surface at a thickness of 1 to 3 μm and dried to form a resin layer 10. Light reflecting film by applying paste-like resin
11 formed. An acryl-urethane-based thermocompression adhesive was applied from above the light reflecting film 11 and dried to form an adhesive layer 12, thereby completing a retroreflective material. The other configuration is the same as that of the first embodiment. In the obtained reflective non-slip sheet material, the glass microspheres 9 are not attached to the tip of a part of the pulverized granules 3 composed of the sludge molten slag. .

Example 3 In Example 1, a second adhesive resin layer was applied from above the ground particles using a sheet material in which the ground particles were embedded and fixed in the first adhesive resin layer. In a state where the layer was semi-dried, partially-reflective transparent glass microspheres separately prepared were sprayed on the second adhesive resin layer to be dried and fixed. The second adhesive resin layer flows and hardly adheres to the tip of some of the pulverized particles, and the partially reflected transparent glass microspheres adhere to the surface of the remaining second adhesive resin layer.

When using the reflective non-slip sheet material obtained in each of the above-described embodiments, the separate 5 is peeled off from the adhesive layer 6, and the reflective non-slip sheet material is interposed via the adhesive layer 6. May be used by sticking it on a road surface or the like.
In this state, the reflective glass microspheres are attached except for the tip of some of the crushed granules, and the glass microspheres are not attached to the tip of some of the crushed granules. Because of the presence of reflective glass microspheres on the inclined surface of the granules, multi-angle light is incident on the light projected from one direction at the top of the crushed granules, so that a wide range of reflectivity is provided. Can be. Further, since the glass microspheres are removed from the tip of some of the crushed granules, the frictional resistance does not decrease and a good anti-slip effect can be obtained.

By making the color of the retroreflective material and the color of the non-slip sheet material similar, an effect is obtained in which the color is not lost even when used for a long time and does not change day and night. The coloring of the non-slip sheet material is performed by including a coloring agent in the first adhesive resin layer and the second adhesive resin layer.

Further, in terms of durability during use, since the glass microspheres are not provided at the tip of some of the ground particles, but are provided from the inclined surface to the bottom of the ground particles, automobiles and motorcycles The glass microspheres are prevented from falling off due to the tires and footwear of pedestrians, and the use durability is excellent.

If a retroreflective material is arranged in stripes or in characters or patterns on the non-slip sheet material, the signing effect is improved and a reflective non-slip sheet material having both aesthetic safety and the like can be obtained. Further, the crushed granules of the reflective non-slip sheet material prepared in the above embodiment are not limited to the crushed granules of the sludge molten slag cooling solids, and any of the fine sand, river sand, and other materials having good slip resistance can be used. . Here, the performance measurement results of the reflective non-slip sheet material obtained in the examples are shown.

<Retroreflective performance> Measurement conditions Measuring instrument: Milorax 12 (manufactured by Toshiba Barotini Co., Ltd.) Lane mark reflection luminance measuring instrument Observation angle: 1.5 degrees Incident angle: 86.5 degrees

[0021]

[Table 1]

As shown in Table 1, the conventional road surface reflection display shows 310 mcd / 1x · m ² in the white line portion, while the reflective performance value of each color of the reflective non-slip sheet material prepared in Example 1 is about A high performance value of 3 to 6 times is obtained, visibility is good, and by making the color of the retroreflective material and the color of the non-slip sheet material the same color, a clear reflection is made in the same color as the sheet material. Color was obtained.

[0023]

[Table 2]

Table 2 shows the results of measuring the performance of the reflective non-slip sheet material prepared in Example 2, and showed good reflection performance as in Example 1. Regarding the slip resistance, a sample having a predetermined size of 100 × 200 mm was peeled off, the sample separator was peeled off, and then the test piece was stuck to a test table, and a slide piece stuck with a mating material [urethane plate Tigers Polymer Co., Ltd., Typeren TR100] was stuck. Place the sample on the slide, and place a 200 g weight on the slide.
The tensile dynamic friction coefficient was measured at a speed of m / min. Generally, the coefficient of kinetic friction is required to be 0.6 or more.

[0025]

[Table 3]

As shown in Table 3, good results were obtained with respect to the slip resistance of both the sheet materials obtained in Examples 1 and 2.

[0027]

As described above, according to the present invention, the reflective glass microspheres are attached except for the tip of a part of the pulverized granules, and the reflective glass is attached to the inclined surface of the pulverized granules. Because of the presence of the microspheres, light at multiple angles is incident on the light projected from one direction at the top of the pulverized granules, so that a wide range of reflectivity can be provided. Further, since the glass microspheres are removed from the tip of some of the pulverized granules, abrasion resistance does not decrease and a good anti-slip effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of the same.

FIG. 3 is a schematic sectional view of a retroreflective sheet material used in the example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 support sheet 2 first adhesive resin layer 3 crushed granules 4 second adhesive resin layer 5 separate 6 adhesive layer 7 support 8 non-adhesive resin layer 9 glass microspheres 10 resin layer 11 light reflection film 12 adhesive layer

Continued on the front page (72) Inventor Seiji Wada 103-40 Setabashi Honcho, Otsu City, Shiga Prefecture (72) Inventor Shinichi Morimoto 14-2 Rinnaka Sakahara, Wachi-cho, Funai-gun, Kyoto (72) Inventor Inaoka Yamafumihiko (72) Inventor Katsumi Nakamura 18-18 Hirayama, Nakahara-cho, Toyohashi-shi, Aichi Prefecture (72) Inventor Noriyuki Yamada 5-7-2 Kojimachi, Chiyoda-ku, Tokyo (72) Inventor Sudo Susumu 2-2-18 Izumi, Okegawa City, Saitama Prefecture Sankyo Rika Chemical Co., Ltd.Okegawa Plant (72) Inventor Koichi Yamamoto Koichi Yamamoto City, Saitama Prefecture 2-2-18 Izumi Rika Chemical Co., Ltd.Okegawa Plant (72) Inventor Takeshi Yamaguchi Saitama 2-2-18 Izumi, Okegawa City, Japan Sankyo Rikagaku Co., Ltd. Okegawa Plant (56) References JP-A-51-76995 (JP, A) JP-A-4-265305 (JP, A) JP, U) Japanese Utility Model Showa 57-105309 (JP, U) Japanese Utility Model Showa 49-14329 (JP, U) Japanese Utility Model Showa 58-33505 (JP, U) Japanese Utility Model Showa 46-18999 (JP, Y1) (58 )Research The field (Int.Cl. ^6, DB name) E01F 9/04

Claims (1)

(57) [Claims] 1. A pulverized particle which is embedded in an adhesive resin layer provided on the surface of a sheet having a back surface having tackiness so that a part of the pulverized particle is exposed, and is exposed from the adhesive resin layer. A reflective non-slip sheet material characterized in that glass microspheres having a reflective layer on a part of a spherical surface are adhered to a surface other than the front end portion of some of the pulverized granules.