JP2006001126A - Scribble preventing plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scribble preventing plate which is difficult to scribble and can easily erase the scribbles. <P>SOLUTION: In the scribble preventing plate P, a primer is applied on the surface of an FRP plate substrate 1 to smooth the surface, a pattern 4 matching a peripheral scene is UV output-printed on the surface, and a ceramic coating 3 is applied to make the thickness of the coating film 5-10 μm. In the case of scribbles by lacquer spraying, they are left to stand for about 2 h for drying, and an adhesive tape is stuck on its coating film surface and peeled off. Alternatively, the scribbles are eliminated with a lacquer thinner. In the case of scribbles by an oily ink, they are wiped off with tissues if they are fresh. When the scribbles are dried, they are rubbed off with a dry waste cloth. In this way, the scribbles are completely eliminated from the surface 3 of the plate P. Pollutants including car exhaust gas and dust can be eliminated similarly. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a graffiti prevention plate that is difficult to graffiti and can easily remove the graffiti even if it is graffiti.

  A heartless person performs graffiti on bridge piers, station walls, public toilet walls, etc., and the graffiti is not only detracting from the cityscape but also a social problem that leads to worsening security.

For this reason, conventionally, there has been considered a means for preventing the graffiti or removing the graffiti easily by removing the graffiti, and as one of them, there is a means for applying graffiti prevention paint on the wall surface. Yes (see Patent Documents 1 and 2).
In addition, a graffiti prevention plate (panel) in which the graffiti prevention paint is applied to the surface has been proposed (see Patent Documents 3 and 4), and there is means for providing the panel on the wall surface.

JP 2003-321545 A Japanese Patent Application Laid-Open No. 2004-67783 JP-A-8-197678 JP 2001-315253 A

Usually, the graffiti ink becomes difficult to remove because the ink permeates into the fine holes (unevenness) on the wall surface, regardless of whether the ink for graffiti is aqueous or oily. Since the unevenness becomes harder as the coating layer becomes harder, a conventional room temperature curable inorganic paint such as a ceramic paint is used for preventing graffiti.
At this time, it is difficult to thin the coating film of a room temperature curable inorganic paint, particularly a ceramic paint, and the thickness of 50 μm is the limit in field work. Moreover, even if it exists in a graffiti prevention board, the coating-film thickness is 50 micrometers or more (refer patent document 3 Paragraph 0016 14th-16th lines).
However, the graffiti-preventing coating film preferably has a smaller film thickness. In particular, the ceramic paint has a crack of about 50 μm thickness, and cracks are generated. Cannot be removed).
Thus, the actual situation is that the conventional coating surface and the graffiti prevention plate have not obtained sufficient effects. Moreover, the graffiti prevention board was expensive.

  This invention makes it a subject to make it cheap and to be able to remove a graffiti reliably.

  In order to achieve the above object, the present invention forms a primer layer for smoothing the surface of the FRP plate base material, and a room temperature curable inorganic material having a coating thickness of 12 μm or less at the factory on the surface of the primer layer. The paint layer was formed.

  The FRP board is a board (board) made of fiber reinforced plastic, has high affinity with resin paint, and has high strength and high toughness. For this reason, it has affinity with the resin-made thing used as a primer of an application layer, and the unevenness | corrugation of a surface becomes smooth with the primer, and a smooth primer application surface is formed.

  Since the room temperature curable inorganic coating layer excellent in graffiti prevention is formed on the smooth primer surface, the room temperature curable inorganic coating layer can be made thin. If the coating layer is thin, cracks are unlikely to occur, the unevenness and the holes are minimized, and the number of holes is extremely small. For this reason, graffiti can be easily peeled off (removed) from the surface of the paint layer.

  Furthermore, conventionally, hand-painting has been the mainstream, and the coating film thickness is 50 μm or more as described above, and graffiti could not be removed smoothly with that film thickness. That is, the inventor has found that the graffiti removal effect increases when the graffiti prevention paint layer (coating film) thickness is 12 μm or less.

  A ceramic paint is excellent as a graffiti-preventing paint. In the case of the ceramic paint, the primer layer may be formed of an acrylic silicone paint having an affinity for the ceramic paint. At this time, it is preferable that the coating thickness of the ceramic coating is 5 μm or more so as to exhibit sufficient graffiti peelability.

Incidentally, the reason why the graffiti prevention paint layer thickness has been 50 μm or more in the past is that even a skilled person is limited to coating with such a film thickness.
In the present invention, the thin film thickness can be achieved by applying the graffiti-preventing paint under strict management in a factory. If it is factory production, it is possible to accurately manage the coating thickness of the room temperature curable inorganic paint, and to provide a high quality product.

In the present invention, as described above, the surface of the FRP plate base material is smoothed with a primer, and a room temperature curable inorganic coating layer having a coating thickness of 12 μm or less is formed thereon at the factory. Regardless of, the graffiti by the ink can be easily removed.
If graffiti is easily removed, even those who don't have graffiti will not be willing to graffiti and graffiti will be suppressed. That is, graffiti prevention is achieved.

  One embodiment is shown in FIG. 1, which is the same as that of the FRP plate substrate 1 in a factory. After performing roughening using 1000 sandpaper, the base was treated by degreasing with alcohol. An acrylic silicone-based two-component curable paint (for example, “Ohashi Chemical Industry Co., Ltd., trade name: Evahart No800 (S) (primary acrylic resin, silicone resin) And a weight ratio of main agent: curing agent = 10: 1) was applied at a layer thickness of 15-20 μm, and the surface was smoothed to obtain a primer-coated surface (undercoat).

Further, an inorganic ceramic paint which is a room temperature curable inorganic paint (for example, manufactured by Ohashi Chemical Industry Co., Ltd., trade name: EVAHART No100 (S) (the paint classification is ceramic paint, and the resin skeleton is Inorganic silicone, the weight ratio of the main agent to the curing agent was main agent: curing agent = 10: 1)) 3 was applied at a layer thickness of 5 to 10 μm (top coating).
Here, in the above Evahart No100 (S), when the layer thickness is 5 μm or more, the peeling property such as graffiti described later becomes almost constant, while the risk of cracking hardly reaches the layer thickness: 7 μm, and thereafter It gradually increases, and the layer thickness is about 10% in the vicinity of 10 μm, and continues to increase after that, and the layer thickness is 20 μm and the degree of risk exceeds 20%. For this reason, as a tolerance, layer thickness: 5-10 micrometers is preferable.

As the means for applying the layers 2 and 3, well-known means such as roller application and air gun application are adopted, and when applying the air gun, a thinner is appropriately mixed to improve sprayability. The mixing of the thinner forms an interface between the undercoat and the top coat, exhibits an effect that the two do not directly contact (does not adhere), and improves smoothness. In particular, toluene-based thinner may be used.
Further, the mixing ratio of the main agent and the curing agent of the primer coating or the room temperature curable inorganic coating is not limited to the above, and is appropriately set in consideration of the adhesion to the FRP plate and the anti-graffiti properties.

In this embodiment, as shown in FIG. 2, various patterns (for example, wood grain, stone surface pattern, flowers, painting, full-color coloring, etc.) are printed on the surface of the undercoat layer 2. It can be set as the board P in which the transparent overcoat layer 3 is formed.
If it does in this way, it can be set as the graffiti prevention board P with high decorating property, for example, can be set as the wall surface suitable for the surrounding scenery. At this time, the pattern 4 is preferably a UV output print. Incidentally, the UV output print is forcibly applied with ultraviolet rays to be cured, and has an advantage that there is no deterioration due to the ultraviolet rays.

Graffiti on these graffiti prevention plates P with lacquer spray, leave the graffiti for about 2 hours, dry the graffiti paint film, stick the adhesive tape on the paint film surface, peel off the graffiti Could easily be removed. It could also be easily removed with lacquer thinner. The former is advantageous when the coating film is thick, and if it cannot be removed with an adhesive tape, a clear lacquer is applied over the graffiti coating film to increase the thickness and then peeled off.
The surface 3 from which the graffiti was peeled off (removed) was excellent in chemical resistance and had no trace at all.

The graffiti prevention plate P was written with oil-based ink, and immediately after that, it could be easily wiped off with tissue paper. After drying, it could be scraped off with a dry waste, and could be easily removed by the method using the above-mentioned adhesive tape and lacquer thinner.
The surface 3 from which this graffiti was peeled (removed) was similarly free of any traces.

When pollutants such as car exhaust gas and dust adhere to this graffiti prevention plate P, the surface (topcoat layer) 3 from which the pollutants have been removed can be easily removed by lacquer thinner. Similarly, there was no trace at all.
From these things, this board P can peel off easily not only the removal of graffiti but also a sticker or a sticker.

  Since the graffiti prevention plate P of this embodiment can be directly attached to the ground, the form of the attachment surface is not selected. For this reason, the ground treatment is not required, the construction period can be shortened, and the cost for constructing the graffiti prevention surface (wall surface) can be reduced.

As a mounting mode, in a place where removal such as a place where a hammering test of a base material is periodically performed such as a bridge pier and a structure is necessary, as shown in FIG. It is preferable that the backing plate 11 is attached to the base material A by screws 12.
On the other hand, in a place where it is not necessary to remove the outer wall of the building, the gate, or the place where the base material A is not subjected to a hammering test regularly, the graffiti prevention plate P is used as the base material A as shown in FIG. It can be attached directly with screws 12.

  With such a graffiti prevention plate P, only the installation work occurs at the site (the installation is completed only by the installation work). For this reason, work can be performed without being affected by the weather, and workability is good. The good workability means that work can be carried out systematically even in places where there are restrictions on the number of work days and work time, so that the work period can be shortened and costs can be reduced compared to the current situation of on-site construction. Moreover, since there is no application | coating operation | work and only installation work is required, since the special skill of application | coating is not requested | required and skill is not required, it can be said that this graffiti prevention board P is easy to handle.

This graffiti prevention plate P can be used on various graffitied wall surfaces. For example, in the railway field, the slope of the railroad side, the block wall surface of the border with private houses, the side of the underpass passage The wall surface, the inner wall surface of the station, etc. can be considered.
In the road and river fields, bridge pier surfaces and roadside slopes can be considered. In the park field, information signs in the park, side walls of public toilets, etc. are conceivable. In the field of architecture, gate walls, outer wall surfaces, etc. can be considered.

  Furthermore, since the graffiti prevention plate P of this example has a large water contact angle of about 118 ° on the surface of the coating film 3, it is difficult to snow and can also be used as a snow accretion prevention material. Further, since the graffiti prevention plate P can be partially repaired and replaced, the maintenance cost can be reduced.

  Instead of the FRP plate 1, a metal plate such as a polycarbonate plate or an aluminum plate may be employed.

Cross section of one embodiment Cross-sectional view of another embodiment Installation illustration of the embodiment Other installation instructions

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 FRP board 2 Primer layer 3 Room temperature curing type inorganic paint (coating film) layer 4 Pattern P Graffiti prevention board

Claims (4)

  Graffiti on which a primer layer 2 for smoothing the surface is formed on the surface of the FRP plate substrate 1, and a room temperature curable inorganic coating layer 3 having a coating thickness of 12 μm or less is formed on the surface of the primer layer 2 at the factory. Prevention plate.   2. The graffiti prevention plate according to claim 1, wherein the primer layer 2 comprises an acrylic silicone paint, and the room temperature curable inorganic paint layer 3 comprises a ceramic paint.   The graffiti prevention plate according to claim 2, wherein the coating thickness of the ceramic paint is 5 μm or more.   The graffiti prevention board according to any one of claims 1 to 3, wherein a pattern 4 is printed on the surface of the primer layer 2 to make the room temperature curable inorganic coating layer 3 transparent.

Images