JP2007278036A - Temporary marking construction method and temporary marking body on the road surface - Google Patents

Abstract

A temporary marking construction method and a temporary marking body on a road surface that can be easily removed without leaving a trace.
An emulsion 3 of a low-melting-point wax 2 is applied in a thin film form to a portion on a road surface 1 where a temporary sign 6 is to be installed, dried to adhere a wax film 5, and a paint 7 or a seal 8 is applied on the wax film 5. The temporary marking 6 is formed by applying or sticking, and when the temporary marking 6 is removed, the paint 7 or the seal 8 is peeled off from the road surface 1 together with the wax film 5 by spraying the high temperature fluid 12 or rubbing the surface of the marking 6. Preferably, the concentration of the low melting point wax 2 in the emulsion 3 is 10% by weight or more, and the thickness of the wax film 5 is 0.3 mm or more and 1 mm or less. More preferably, the paint 7 or the seal 8 applied or pasted on the wax film 5 is heat-insulating. For example, the emulsion 3 can be prepared by using the low melting point wax 2 as an animal or vegetable wax and dispersing the animal or vegetable wax in water and alcohol.
[Selection] Figure 1

Description

  The present invention relates to a temporary marking construction method and a temporary marking body on a road surface, and more particularly to a method for constructing a temporary traffic sign and other temporary markings on a road surface such as a road under construction and a temporary marking body used in the method.

  On road surfaces such as passageways under construction, temporary signs such as traffic signs such as lane markings, stop lines, pedestrian crossing signs, etc. that differ from the completed road surface (hereinafter referred to as temporary signs) Is installed). Such temporary markings on the road surface should be removed after the completion of construction to avoid confusion with the original traffic signs and pedestrian crossing signs, etc. (hereinafter sometimes referred to as this marking) installed on the completed road There is. Conventionally, temporary signs installed using traffic paint or the like are overcoated with paint of the same color as the road surface after construction is completed, or the paint portion of the road surface is scraped off. However, in the method of overcoating with paint, it is difficult to make the same color as the road surface, and traces remain, and the overcoating paint may peel off and the temporary sign may reappear. Also, the method of scraping the paint is particularly troublesome on rough surfaces such as asphalt roads, because the paint enters the road surface (between quarries) and adheres firmly, so it takes a lot of work and scratches the road surface after completion. There is a risk.

  In order to facilitate the removal of the temporary marking, the temporary marking may be installed using a peelable adhesive tape. The road marking formed with this adhesive tape can easily peel off the tape from the road surface after the construction is completed, and the risk of damaging the road surface is small. However, road markings using conventional peelable adhesive tapes are easily peeled off because of their relatively weak adhesion to the road surface, and it has also been experienced that they naturally peel off due to vehicle traffic and the like during construction. For this reason, adhesive strength of the adhesive tape is increased by applying a primer to the road surface in advance on uneven asphalt road surfaces, etc., but if the primer is applied, the adhesive strength becomes too large and it takes time to peel off the adhesive tape. . Although it adheres to the road surface with sufficient strength during the construction period, it is desired to develop a temporary sign that can be easily removed after the construction.

  On the other hand, Patent Document 1 proposes a method of forming a temporary sign by sticking a foamed resin sheet made of a polystyrene-based resin or a resin containing 60% by weight or more of a polystyrene-based resin onto a road surface with an adhesive. The polystyrene-based foamed resin sheet can be dissolved with a solvent such as toluene, and can be easily removed by applying a solvent even when a primer is applied to the road surface and firmly adhered. Patent Document 2 proposes a method of forming a temporary sign using a marking material provided with a colored layer containing a binder and an irreversible discolorable temperature indicating pigment. While this marking material is arranged on the road surface and is used at a temperature lower than a predetermined temperature (for example, 70 to 500 ° C.), the colored layer maintains a color different from the road surface and is visible as an indication from the observer. When heated to a predetermined temperature (for example, 70 to 500 ° C.) or higher, the colored layer is irreversibly discolored to substantially the same color as the road surface, and becomes invisible as an indication from the observer. For this reason, it can be removed by heating the colored layer irreversibly while keeping the marking material firmly adhered to the road surface and making the temporary marking invisible.

Japanese Patent Laid-Open No. 2004-060297 JP 2004-315567 A JP 2003-136020 A

  However, the method of Patent Document 1 has a problem that the foamed resin sheet is dissolved by the solvent, but an adhesive that does not dissolve by the solvent remains on the road surface. The method of Patent Document 2 can also make the marking material invisible by irreversible discoloration of the colored layer, but has a problem that the marking material after discoloration remains on the road surface. It is desirable that the road surface after the temporary marking is removed be restored to the same state as before the temporary marking is installed, and if the adhesive or marking material remaining on the road surface interferes with the use of the road surface, it may be time-consuming to scrape off. Work etc. are needed. In order to avoid such a shaving work, a temporary sign that can be easily removed without leaving a trace after completion of the work is necessary.

  Therefore, an object of the present invention is to provide a temporary marking construction method and a temporary marking body on a road surface that can be easily removed without leaving a trace.

  The present inventor has paid attention to a low melting point wax that is solid at room temperature but melts as the temperature rises. As disclosed in Patent Document 3, the low melting point wax can be formed into a wax film that adheres firmly to the surface of the structure by applying it to the surface of the structure as an emulsion having a small viscosity. The wax film adheres to the road surface with sufficient adhesion at room temperature, but weakens the adhesion by contact with a high-temperature fluid above the softening point of the wax (for example, application or spraying of warm water or steam) from the road surface. It can be easily peeled off. If a temporary sign is formed on this wax film, it can be expected to be a temporary sign that adheres to the road surface during the construction period and can be removed without leaving any trace after the completion of the work. Furthermore, the present inventor can prevent the softening of the wax film even on a road surface that can be at a relatively high temperature by applying or applying a paint or a seal on the wax film, and not only the contact with the high temperature fluid but also the wax film. It was experimentally found that the wax film could be peeled off from the road surface by frictional heat when the surface of the rubber was rubbed with a brush or the like. The present invention has been completed as a result of further research and development based on these findings.

  Referring to the embodiment of FIG. 1, the temporary marking construction method on the road surface according to the present invention applies the emulsion 3 of the low melting point wax 2 to the site on the road surface 1 where the temporary marking 6 is to be installed, and is dried. The temporary coating 6 is formed on the wax coating 5 by applying or pasting the coating 7 or the seal 8. When the temporary marking 6 is removed, the temporary coating 6 is sprayed or the surface of the marking 6 is rubbed. 7 or the seal 8 is peeled off from the road surface 1 together with the wax film 5.

  Referring also to the embodiment of FIG. 1, a temporary marking body 10 on a road surface according to the present invention includes a wax film 5 in which an emulsion 3 of a low melting point wax 2 is applied onto a road surface 1 in a thin film and dried. And a temporary marking 6 formed by applying or sticking the paint 7 or the seal 8 on the wax film 5, and the paint 7 or the seal 8 is removed by spraying the high temperature fluid 12 or rubbing the surface of the sign 6 when removed. 5 and the road surface 1 can be peeled off.

  Preferably, the concentration of the low melting point wax 2 in the emulsion 3 is 10% by weight or more, and the thickness of the wax film 5 is 0.3 mm or more and 1 mm or less. More preferably, the paint 7 or the seal 8 applied or pasted on the wax film 5 is made to be heat-insulating. For example, the emulsion 3 can be prepared by using the low melting point wax 2 as an animal or vegetable wax and dispersing the animal or vegetable wax in water and alcohol.

  In the temporary marking construction method and the temporary marking body of the present invention, the emulsion 3 of the low melting point wax 2 is applied in a thin film on the road surface 1 and dried to adhere the wax film 5, and the paint 7 or the seal 8 is applied on the wax film 5. The temporary marking 6 is formed by the above, and when the temporary marking 6 is removed, the paint 7 or the seal 8 is peeled off from the road surface 1 together with the wax film 5 by spraying the high temperature fluid 12 or by rubbing the surface of the marking 6. Play.

(A) Since the temporary sign is formed on the wax film that is firmly adhered to the road surface, the temporary sign can be made difficult to peel off from the road surface during the construction period in which the vehicle or the like passes on the temporary sign.
(B) By a relatively simple operation of spraying the high-temperature fluid 12 or rubbing the surface of the marking 6, the temporary marking and the wax film can be removed from the road surface without leaving a trace.
(C) The road surface after the temporary marking has been removed can be restored to the same state as before the temporary marking installation, so that troublesome scraping work or the like is not required.
(D) The temporary sign peeled off from the road surface together with the wax film can be sucked and collected with a vacuum or the like, and diffusion of the peeled temporary sign into the environment can be easily prevented.
(E) Even on road surfaces that are relatively hot in summer, etc., by applying or sticking a heat-shielding paint or seal on the wax film to make a temporary sign, the softening of the wax film is suppressed and the temporary sign object Separation from the road surface can be prevented.

  FIG. 1 shows an embodiment of the present invention using animal or vegetable waxes such as beeswax, spermaceti, and wood wax as the low melting point wax 2. Animal or vegetable waxes can be decomposed in the natural world, and even when the wax film 3 after peeling from the road surface 1 flows into the natural world, environmental pollution can be kept small. The wax emulsion 3 is prepared by dispersing the low melting point wax 2 in water and / or alcohol. An example of the composition of the wax emulsion 3 is shown in Table 1. However, it is sufficient that the wax emulsion 3 used in the present invention is mainly composed of the low melting point wax 2, and if necessary, physical property improvers, preservatives, insecticides and fungicides, fragrances, bleaching agents. Other chemicals may be mixed. The animal or vegetable wax emulsion 3 is colorless and transparent, but may contain a colorant or the like as necessary.

  FIG. 2 shows an example of a flow chart of a method for constructing a temporary sign according to the present invention. The present invention will be described below with reference to the flowchart of FIG. First, in step S001, the portion on the road surface 1 where the temporary sign 6 is to be installed is cleaned, and then in step S002, the wax / emulsion 3 is applied in the form of a thin film by a method such as roller, brush application, or spraying (FIG. 1A). In step S003, the road surface 1 is cured to evaporate water to form a wax film 5 that adheres closely to the road surface 1 (see FIG. 1B). The curing (drying) time of the wax film 5 in step S003 can be shortened by increasing the alcohol content in the emulsion 3.

  By applying the low melting point wax 2 as the emulsion 3, the low melting point wax 2 can enter the small concave portion on the road surface 1, and the wax film 5 that adheres firmly on the road surface 1 can be formed. In the present invention, it is not necessary to apply a primer on the road surface 1, but the surface of the road surface 1 is smoothed by the adhesion of the wax film 5, and the finish of the temporary sign 6 formed on the wax film 5 is the same as when the primer is applied. The temporary marking 6 can be made difficult to peel off from the wax film 5 and the road surface 1. Moreover, since the wax film is water-repellent, it does not peel even when exposed to rainwater, and can be adhered to the road surface with sufficient strength for a required period.

  However, it is effective to thicken the wax film 5 to some extent in order to prevent the vehicle from being damaged due to traffic. The present inventor has experimented that by setting the concentration of the low melting point wax 2 in the emulsion 3 to 10% by weight or more, the wax film 5 can have a thickness sufficient for preventing damage, for example, 0.3 mm to 1 mm. I was able to confirm. The concentration of the low melting point wax 2 is preferably 15% by weight or more, more preferably about 20% by weight as shown in Table 1. Even when the concentration of the low melting point wax 2 is 20% by weight, the viscosity of the emulsion 3 is sufficiently small (for example, 100 cp or less with Iwata clay meter), so that it can be applied on the road surface 1 in a thin film form. If necessary, the wax film 5 can be made to have a required thickness by repeatedly coating the emulsion 3 having a relatively low concentration multiple times.

  In step S004, a temporary sign body provided with the wax film 5 and the temporary sign 6 by applying or pasting the paint 7 or the seal 8 as the temporary sign 6 on the wax film 5 by manual work or using an appropriate working machine. 10 is formed (see FIG. 1C). The paint 7 or the sheet 8 used in the present invention is not particularly limited, and traffic paints and adhesive tapes that are conventionally used as temporary markings or permanent markings can be used. However, on outdoor road surfaces 1 and the like that can be relatively hot due to solar heat. It is desirable to use white paint 7 or seal 8. More preferably, the paint 7 or the seal 8 is made heat-insulating or infrared-reflecting. For example, when beeswax is used as the low melting point wax 2, when the road surface is heated to about 60 ° C., the wax film 5 starts to soften and the adhesion is weakened. It was confirmed experimentally that the softening of the wax film 5 can be suppressed and peeling of the temporary marking 6 from the road surface 1 can be prevented by applying or sticking the sheet 8. Further, by making the paint 7 or the seal 8 heat shield or infrared reflective, the softening of the wax film 5 is further effectively suppressed even on the outdoor road surface 1, and the temporary sign is displayed during the use period of the temporary sign 6 (step S005). It is possible to prevent the body 10 from peeling from the road surface 1.

  In step S006, for example, when the construction is completed, the paint 7 or the seal 7 is sealed by spraying the high temperature fluid 12 above the wax softening point on the surface of the temporary marking body 10 or by friction of the surface of the temporary marking body 10 with a brush or the like. The process which peels 8 from the road surface 1 with the wax film | membrane 5 is shown. For example, when beeswax is used as a wax, the wax film 5 is softened and weakened in adhesion by spraying warm water or steam of about 70 ° C. or higher with a hot water high pressure washer 14 as shown in FIG. 7 or the seal 8 is peeled off from the road surface 1 by the blowing pressure, and the road surface 1 can be restored to the same state as before the temporary sign body 10 is installed (step S007). Further, the present inventor has experimentally confirmed that the wax film 5 whose adhesion is weakened can be peeled off from the road surface 1 by the wind pressure by continuously blowing hot air of about 45 ° C. on the wax film 5.

  In addition, when the beeswax is used as the wax, the inventor rubs the surface of the temporary marking body 10 using a hard brush-like rotating body, whereby the adhesion of the wax film 5 is weakened by frictional heat, and the brush-like It has been found that the wax film 5 whose adhesion is weakened by further friction of the rotating body can be peeled from the road surface 1 together with the paint 7 or the seal 8. Compared with the method of spraying the high-temperature fluid 12, this friction method depends on the spray area of the high-temperature fluid 12 (spout width of hot water or steam), but the temporary sign 10 having a relatively large area is peeled off in a short time. can do. By combining the spraying of the high-temperature fluid 12 and the friction of a brush or the like according to the shape and area of the temporary sign body 10, it is possible to expect efficient peeling of the temporary sign body 10. As shown in FIG. 1D, the paint 7 or the seal 8 peels off together with the wax film 5 as fragments 11 by spraying of the high temperature fluid 12 or friction of a brush or the like. For example, the fragments 11 peeled off by the vacuum device 15 are removed. By collecting, it is possible to easily prevent the fragments 11 from diffusing into the environment.

[Experimental Example 1]
Using the wax emulsion 3 having the composition shown in Table 1, an experiment was conducted to form the temporary marking body 10 of the present invention on an outdoor asphalt road surface 1. In this experiment, the emulsion 3 was applied to the surface of the road surface 1 at a rate of 100 g / m ² and dried to form a wax film 5, and a temporary sign 6 was drawn by using a white traffic paint 7 thereon. A sign 10 was formed. The viscosity of the emulsion 3 was 100 cp or less, and the thickness of the formed wax film 5 was 1 mm or less. Although the construction vehicle was repeatedly run on the temporary sign body 10, the temporary sign body 10 remained attached to the road surface 1 and no separation was observed. Further, the surface temperature of the road surface 1 rose to about 60 ° C. during fine weather, but the temporary marking body 10 did not peel off even when the construction vehicle was run in this state. Furthermore, in order to simulate the rainy weather, the construction vehicle was run after sprinkling water on the temporary sign body 10, but no separation of the temporary sign body 10 could be observed. From this experimental result, it was confirmed that the temporary sign body 10 of the present invention was adhered with sufficient strength on the outdoor road surface 1 that repeats sunny weather and rainy weather.

  Next, on a part of the surface of the temporary sign 10 attached on the road surface 1, as shown in FIG. 1 (D), with a hot water high pressure washer (made by MICONE, product name HOT BOX, pressure 6.5 bar, heating temperature 145 ° C.) When hot water of about 70 ° C. was sprayed, the temporary marking body 10 could be peeled off from the road surface 1 as a fragment 11 by water pressure, and the road surface 1 could be recovered to the same state as before the temporary marking body 10 was installed. . Further, when the remaining portion of the surface of the temporary marking body 10 is rubbed with a brush-like rotating body, the remaining portion is peeled off from the road surface 1 as fragments 11 and the road surface 1 is restored to the same state as before the temporary marking body 10 is installed. We were able to. From these experimental results, it was confirmed that the temporary marking body 10 of the present invention could be easily removed from the road surface 1 without leaving a trace by spraying with a high temperature fluid or friction with a brush or the like.

  Thus, provision of the “temporary marking construction method and temporary marking body on the road surface that can be easily removed without leaving a trace”, which is the object of the present invention, can be achieved.

It is explanatory drawing of one Example of this invention. It is an example of the flowchart of the construction method of the temporary marking by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Road surface 2 ... Low melting point wax 3 ... Wax emulsion 5 ... Wax film 6 ... Temporary sign 7 ... Paint 8 ... Seal 10 ... Temporary sign
11 ... debris 12 ... high temperature fluid
14 ... Hot water high pressure washer 15 ... Vacuum device

Claims (9)

  A low melting point wax emulsion is applied in a thin film to a site on the road surface where a temporary sign is to be installed, and dried to attach a wax film, and a temporary sign is formed by applying or pasting a paint or a seal on the wax film, A temporary marking construction method on a road surface in which a paint or a seal is peeled off from a road surface together with a wax film by spraying a high-temperature fluid or friction on a marking surface when the temporary marking is removed.   The construction method according to claim 1, wherein the low melting point wax concentration in the emulsion is 10% by weight or more.   The temporary marking construction method on the road surface which makes the said coating material or seal | sticker heat-insulating property in the construction method of Claim 1 or 2.   The road surface according to any one of claims 1 to 3, wherein the low melting point wax is an animal or vegetable wax, and the emulsion is prepared by dispersing the animal or vegetable wax in water and alcohol. The temporary sign construction method above.   The temporary marking construction method on the road surface according to any one of claims 1 to 4, wherein the paint or seal peeled off together with the wax film is collected by vacuuming.   A low-melting-point wax emulsion is applied to the road surface in a thin film and dried and attached, and a temporary sign formed by applying or pasting a paint or seal on the wax film. A temporary marking body on the road surface that allows the paint or seal to be peeled off from the road surface together with the wax film by spraying fluid or friction on the marking surface.   The temporary sign body according to claim 6, wherein the concentration of the low melting point wax in the emulsion is 10% by weight or more.   The temporary sign body according to claim 6 or 7, wherein the wax film has a thickness of 0.3 mm to 1 mm.   The temporary sign body according to any one of claims 6 to 8, wherein the paint or seal is heat-insulating.

Images