JP7382472B1 - Road marking construction method and masking sheet - Google Patents

Abstract

An object of the present invention is to provide a method for constructing road surface markings that can easily construct road surface markings such as deceleration road markings.
[Solution] The road marking is formed through a masking step of masking the non-painted area of the road marking using a masking sheet 1 containing asphalt, and a coating step of applying paint to form the road marking on the road surface masked in the masking step. construction. The temperature of the paint may be 100°C or higher. In the masking step, the masking sheet 1 may be fixed to the road surface with an adhesive tape 2. In the masking step, the masking sheet 1 is placed with a gap left in the area where the road marking is to be formed, the gap is masked with the adhesive tape 2, and the masking sheet 1 is fixed to the road surface. good.
[Selection diagram] Figure 4

Description

The present invention relates to a method for constructing road markings such as deceleration road markings, and a masking sheet used in this method.

BACKGROUND OF THE INVENTION Road markings in colors such as white, yellow, and blue are painted on the surfaces of paved roads used by automobiles to promote safe and smooth traffic. Among road markings, road markings that encourage deceleration (deceleration road markings) are also called deceleration marks or deceleration lane marks, and can be roughly divided into broken line type and mark type. On the other hand, broken-line deceleration road markings are often installed on slopes and curved roads to reduce speed when entering a curve or curve, while dashed deceleration road markings are expected to have a deceleration effect by making the width of the road appear narrower. , In addition to slopes and curves, they are often constructed in areas where rear-end collisions occur frequently, such as intersections.

In deceleration road markings, broken line-type deceleration marks are also called dot lines (arrow-feather road markings), and an example of the construction of dot lines will be described with reference to FIG. 1.

FIG. 1 is an example of a two-lane road on which dot lines have been constructed. In FIG. 1, on the road surface of a two-lane road consisting of one lane 11 and the other lane 12, there is a center line 17 extending in the shape of a broken line in the direction of vehicle flow (vehicle traveling direction) at the center of the road. A pair of white lines 18 and 19 are constructed on both sides of the road to extend in the direction of traffic flow and to separate the roadside strips from the traffic lanes. Furthermore, in the road shown in FIG. 1, a pair of dot lines 13 and 14 extending in the direction of traffic flow are constructed on both sides of the lane 11 on the road surface of one lane 11, and a pair of dot lines 13 and 14 are constructed on the road surface of the other lane 12. A pair of dot lines 15 and 16 extending in the direction of traffic flow are constructed on both sides of the dot line 12.

Specifically, in one lane 11, the dot line 13 is formed in a dashed line shape along the white line 18 at a distance from the white line 18 on the side on the white line 18 side.
The dot line 14 paired with 3 is formed in the shape of a broken line along the center line 17 at a distance from the center line 17 on the side on the center line 17 side. The shape of each dot 13a, 14a forming the broken line of dot lines 13, 14 is a parallelogram, and each dot 13a, 14a is a parallelogram.
4a are arranged in a broken line shape at equal intervals. In particular, for deceleration road markings, dot 13
a and the dots 14a are arranged symmetrically with respect to the lane axis in the traveling direction, with the acute angles of the respective parallelograms facing each other in the direction of vehicle travel. By arranging the dots 13a and 14a symmetrically in this direction, a pair of dot lines 13, 1
4 can give a driver driving in lane 11 the impression that the lane is narrower in the direction of travel of the vehicle.

Also, on both sides of the other lane 12, along the white line 19 and the center line 17, there is a dot line 15 in which dots 15a are arranged, and a dot line 16 in which dots 16a forming a pair with this dot line 15 are arranged. The dot lines 15 and 16 correspond to the dot lines 13 and 14, respectively, and are formed in the same shape. That is, dot lines 15 and 16 are formed in the other lane 12 as well, making the lane appear narrower in the direction of travel of the vehicle.

The dot line 13 is a marking line (
The first scribing step (marking lines) is drawn, the dirt removal step is removing dirt from the road surface, the primer treatment step is applying a primer to the painted area of the dot lines, and the second marking step is drawing the remaining marking lines using plywood. a marking process, a masking process in which the non-painted areas of the dot lines are masked using a masking material, a coating process in which paint is applied to the masked road surface to form dot lines, and a process in which the paint is applied before it hardens. It is obtained through a masking material removal process in which the masking material is removed and a solidification process in which the paint is solidified to complete the dot lines. Such a conventional dot line construction method will be explained using FIG. 2.

In the first marking process, marks (drafts) are made on the road surface to specify the painting area of the dot lines 13. Specifically, as shown in FIG. 2(a), a marking line 21 (a marking line parallel to the white line 18) corresponding to the outline on the center line side of the outline of the dot portion 13a in the direction of traffic is drawn on the road surface. At the same time, a marking line 22 is drawn in a direction perpendicular to the white line 18 in accordance with the interval at which the dot portions 13a are to be constructed.

In the dirt removal process, if there is large dirt on the road surface, a blower is used to remove dust.

In the primer treatment step, a primer is applied to the painting area of the dot lines 13 as necessary.

In the second marking step, the outline of each dot portion 13a in the direction of traffic flow is formed at an angle of 45 degrees to the white line 18, so as shown in FIG. 2(b), A plywood board 23 having a planar shape of a right isosceles triangle is used to mark the road surface. For details, see plywood 2
Since the planar shape of No. 3 is a right isosceles triangle, by aligning one side forming the apex angle of the plywood 23 with the marking line 21 or the marking line 22, the outline of the dot 13a in the direction of the vehicle (
A marking line 24 corresponding to the contour (intersecting the flow direction) can be drawn. Although not shown in FIG. 2, after the marking lines 24 are drawn, the plywood 23 is removed.

In the masking process, as shown in FIG. 2(c), in order to form dot portions 13a having a parallelogram planar shape, paint for forming dot lines is applied to areas that are not painted (non-painted areas). Then, a craft tape 25 is applied as a masking material during painting. For details, first, tape craft tape 25 (approximately 400 mm long x 75 mm) along the marking line 24.
After pasting the paper tape (approximately the width), overlap the ends so that there are no gaps where the paint can seep into the non-painted areas, and then apply craft tape one after the other, for a total of 6 pieces of craft tape 25 on the top and bottom. . 6 pieces of craft tape 25 pasted with their edges overlapped to avoid gaps
functions as a masking material in painting dot lines. This work is done half-heartedly, and in order to prevent the paint from seeping into the road surface through the gaps in the craft tape, it is necessary to paste the craft tape many times with the edges precisely aligned, which is cumbersome for the worker. As well as being a work,
It's hard work.

In the coating process, as shown in FIG. 2(d), a coating machine is used to heat and coat melt-type paint onto the area corresponding to the dot portions 13a from above the craft tape 25 attached to the road surface. A dot precursor 13b is formed on the road surface. Regarding the temperature of melt-type paint, the common specifications for civil engineering works (Non-Patent Document 1) states that the melt layer must be controlled so that the paint can be applied at a temperature of 180 to 220°C at all times.

In the masking material removal process, before the paint solidifies, the craft tape 25 coated with paint is collected, and in the solidification process, the paint remaining on the road surface is solidified, as shown in FIG. 2(e). Thus, dot portions 13a are formed on the road surface.

Common Specifications for Civil Engineering Works, Shikoku Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism, March 2021

Construction of road markings is carried out outdoors, which is subject to weather conditions, and the paint used to form road markings must be applied at high temperatures, creating a harsh work environment. Moreover, since all the work in constructing such road markings is done manually, it is required to reduce the burden on the workers. However, the conventional road marking construction method involves a large number of steps, requires a long time and a great deal of effort, and has the problem of placing a heavy burden on workers. Furthermore, since it is necessary to close the road in order to construct the dot line, it was necessary to improve construction efficiency from the perspective of shortening the period of road closure. Furthermore, in conventional construction methods, the masking material is made only of craft tape, which has low heat resistance and waterproof properties, is easily affected by high-temperature paint and moisture, and is affected by road conditions and weather. The masking material was also difficult to handle, resulting in poor workability.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method for easily constructing road surface markings such as deceleration road markings, and a masking sheet for use in this method.

Another object of the present invention is to provide a masking sheet that has excellent handling properties even when exposed to high temperatures or in the presence of moisture, and can improve the workability of road markings.

As a result of intensive studies to achieve the above-mentioned object, the inventors of the present invention discovered that, after masking the non-painted area of the road marking using a masking sheet, the paint for forming the road marking was applied to the masked road surface. , discovered that road markings such as deceleration road markings can be easily constructed, and completed the present invention.

The road marking construction method as aspect [1] of the present disclosure includes a masking step of masking the non-painted area of the road marking using a masking sheet, and a coating for forming the road marking on the road surface masked in the masking step. It includes a coating process.

Aspect [2] of the present disclosure is an aspect in which the masking sheet contains asphalt in the aspect [1].

Aspect [3] of the present disclosure is that in the aspect [1] or [2], the temperature of the paint is 10
This is an embodiment in which the temperature is 0°C or higher.

Aspect [4] of the present disclosure is an aspect in which the paint is a melt-type paint in any of the aspects [1] to [3].

Aspect [5] of the present disclosure is an aspect in which the masking sheet is a fibrous structure containing asphalt in any of the aspects [1] to [4].

Aspect [6] of the present disclosure is an aspect in which, in any of the aspects [1] to [5], the road surface marking is a road surface marking having a curved portion and/or a non-right angle portion.

Aspect [7] of the present disclosure is the aspect [1] to [6], in which the road marking has an oblique side extending in a direction diagonally intersecting the direction of flow of vehicles. It is a mode.

Aspect [8] of the present disclosure is an aspect in which the road marking is a deceleration road marking in any one of the aspects [1] to [7].

Aspect [9] of the present disclosure is that in the aspect [8], the deceleration road surface marking has a broken line shape (or dotted line shape) in which a plurality of dot portions are arranged in parallel at predetermined intervals along the direction of vehicle flow; The upstream end and the downstream end of the dot portion in the direction of traffic flow are oblique sides extending in a direction obliquely intersecting the direction of traffic flow.

Aspect [10] of the present disclosure is an aspect in which the masking sheet is fixed to the road surface with an adhesive tape in the masking step of any of the aspects [1] to [9].

Aspect [11] of the present disclosure is that in the masking step of the aspect [10], the masking sheet is placed with a gap provided to the painted area of the road marking, and the gap is masked with the adhesive tape. This is a mode in which the masking sheet is fixed to the road surface.

Aspect [12] of the present disclosure is an aspect in which the paint is applied with a flow coater-type construction machine having a slit-type opening in the coating process of any of the aspects [1] to [11].

Aspect [13] of the present disclosure is, in any of the aspects [7] to [12], a method for drawing a marking line corresponding to a hypotenuse extending in a direction diagonally intersecting the direction of vehicle flow. This is an embodiment that does not include a marking process.

The present disclosure includes, as aspect [14], a masking step of masking a non-painted area of a road marking using a masking sheet, and a coating step of applying a paint for forming a road marking to the road surface masked in the masking step. Also included are masking sheets used in construction methods for road markings.

Aspect [15] of the present disclosure is an aspect in which the masking sheet contains asphalt in the aspect [14].

Aspect [16] of the present disclosure is that in the aspect [14] or [15], the planar shape of the masking sheet includes a main body portion in the shape of a right-angled isosceles triangle and a hypotenuse of the main body portion, and a surface of This is an aspect in which the shape has a convex portion for forming a gap with the outline of the sign.

Aspect [17] of the present disclosure is the aspect [16], wherein the convex portion is a right triangular first convex portion protruding from one end of the hypotenuse, and a first convex portion protruding from the other end of the hypotenuse. In this embodiment, the second convex portion has a parallelogram shape.

Aspect [18] of the present disclosure is the aspect [16], in which the masking sheet is formed with a notch for positioning it with respect to the road surface on which the marking line is drawn.

In the present disclosure, by masking the non-painted area of the road marking using a masking sheet and applying paint for forming the road marking to the road surface, road markings such as deceleration road markings can be easily constructed. In addition, when the masking sheet contains asphalt, it has excellent heat resistance and waterproof properties, so that handling properties can also be improved.

FIG. 1 is a schematic plan view showing an example of a two-lane road on which dot lines have been constructed. FIG. 2 is a process diagram for explaining a conventional dot line construction method. FIG. 3 is a schematic plan view showing an example of the masking sheet of the present disclosure. FIG. 4 is a schematic plan view showing a state in which the non-painted area of the dot line is masked using the masking sheet of FIG. 3 in the masking step of the construction method of the present disclosure. FIG. 5 is a schematic perspective view showing a state in which paint for forming road markings is being applied to a road surface using a coating machine in the application step of the construction method of the present disclosure. FIG. 6 is a plan view showing the masking sheet used in Example 1. FIG. 7 is a schematic diagram for explaining a method of measuring the ignition time of a masking sheet. FIG. 8 is a plan view showing the masking sheet used in Example 2.

[Road marking construction method]
The road marking construction method of the present disclosure is characterized by including a coating step of masking the non-painted area of the road marking using a masking sheet and applying a paint for forming the road marking to the road surface. When constructing road markings using the masking sheet, the work of drawing marking lines and fixing masking materials such as craft tape is greatly simplified compared to conventional construction methods, reducing the burden on workers. .

Hereinafter, the construction method of the present disclosure using this masking sheet will be explained with reference to the drawings.

The road marking construction method of the present disclosure includes, for example, a marking process of drawing marking lines on the road surface to specify the painted area of the road marking (area where the road marking will be formed), a dirt removal process of removing dirt on the road surface, A primer treatment process in which a primer is applied to the painted area of the road marking, a masking process in which the non-painted area of the road marking (a part of the entire non-painted area) is masked using a masking sheet, and a road marking is formed on the masked road surface. The construction method includes a coating step of applying a paint to make the road marking, a masking sheet removal step of removing the masking sheet on which the paint has been applied before the paint hardens, and a hardening step of hardening the paint to complete the road marking. It's okay.

As the scribing step, stain removal step, primer treatment step, and solidification step, the first scribe step, stain removal step, primer treatment step, and solidification step in the conventional construction method can be used. Therefore, similarly to the conventional construction method, the stain removal step and the primer treatment step are optional steps that are performed as necessary, and may be omitted depending on the road surface condition.

In the construction method of the present disclosure, unlike conventional construction methods, the second marking step using plywood is not an essential step, but by forming the masking sheet into a shape corresponding to the second marking line, The second marking step can be omitted. In conventional construction methods, for example, if the road marking is a dot line (wavy deceleration road marking), the white line and center line (in the direction of traffic)
In addition to the first marking process of drawing a marking line parallel to the direction of the vehicle and a marking line perpendicular to the direction of traffic flow, an auxiliary tool or ruler for drawing the second marking line is used to draw a marking line parallel to the direction of traffic. Using triangular plywood, a second section extending in a direction diagonally intersecting the white line and center line is used.
The second marking process of drawing the marking lines was an essential step. In contrast, in the construction method of the present disclosure, by using a masking sheet having a shape corresponding to the second marking line as a masking material, it is possible to proceed to the masking step without going through the second marking step. .

(Masking process)
In the masking process, the non-painted area of the road marking is masked with a masking sheet (the masking sheet is placed outside the contour of the road marking), and paint is applied from above the masking sheet in the next coating process. This allows the shape of road markings to be easily formed on the road surface.

When the road marking is a broken deceleration mark (a dot line having parallelogram-shaped dots), an example of a masking sheet used in the masking step in the deceleration mark construction method is shown in FIG.

As shown in FIG. 3, the masking sheet 1 includes a main body portion 1a having a substantially right triangular shape, and a first convex portion 1b and a second convex portion 1c that respectively protrude from both ends of the oblique side of the main body portion 1a. It consists of

Specifically, the main body portion 1a has a first side (for example, a length of 400 to 440 mm) extending from the apex 1a-1 to the apex 1a-2 corresponding to the apex of the right angle part of a right triangle, and the apex 1a.
-1, and a second side (for example, length 400 to 440 mm) extending in a direction perpendicular to the first side to the apex 1a-3.

The first convex portion 1b protrudes from the end of the first side of the oblique side of the main body portion 1a in the shape of a right triangle, sharing the oblique side, and forms an apex 1b-1 of the first convex portion 1b. corresponds to the vertex of the right angle part of a right triangle. The first convex portion 1b extends from the first vertex 1b-1 along the first side of the main body portion 1a, and extends from the inner wall 1b-2 (for example, 30 to 70 mm in length) to the oblique side of the main body portion 1a.
), and an outer wall 1b-3 (for example, 50 to 90 mm in length) extending from the first apex 1b-1 along the second side to the apex 1a-2 of the main body portion 1a.

The second convex portion 1c protrudes from the end of the second side of the oblique side of the main body portion 1a in the shape of a parallelogram, sharing the oblique side. The second convex portion 1c extends along the first side of the main body portion 1a from the apex 1a-3 of the main body portion 1a, and extends from the outer wall 1c-3 (for example, a long side) to the apex 1c-1 of the obtuse angle portion. an upper wall 1c-4 extending from the apex 1c-1 along the oblique side of the main body portion 1a and reaching the apex 1c-2 of the acute angle portion;
and an inner wall 1c-5 extending along the first side of the main body portion 1a and reaching the oblique side of the main body portion 1a.

The masking sheet 1 having such a shape includes the masking sheet 1 to be placed on the road surface.
In order to facilitate positioning and improve workability, cutouts may be formed, and in this example, cutouts 1d, 1e, 1f, 1g, and 1h are formed at five locations.

That is, the outer wall of the first convex portion 1b has a first cutout portion 1d in the vicinity of the apex 1a-2.
is formed. Specifically, the first notch 1d is located at the apex 1a-2 of the main body 1a.
It is formed in a V-shape or U-shape with a depth of approximately 5-20 mm at a position approximately 10-30 mm from the base.

A second notch 1e is formed on the first side of the main body portion 1a at a portion facing the apex 1c-2 of the second convex portion 1c. That is, the second notch 1e is formed in a V-shape or a U-shape with a depth of approximately 5 to 20 mm at a position approximately 100 to 140 mm from the apex 1a-1 of the main body portion 1a.

A third notch 1f is formed on the second side of the main body portion 1a at a position facing the notch 1d, and a fourth notch 1f is formed at a position facing the apex 1b-1 of the first convex portion 1b. A notch 1g is formed, and a fifth notch 1h is formed at a position facing the apex 1c-2 of the second convex portion 1c. That is, the third notch 1f and the fourth notch 1g are respectively located at the apex 1a-
The fifth notch 1h is formed in a V-shape or a U-shape with a depth of approximately 5-20 mm at positions approximately 10-30 mm and 50-90 mm from the apex 1a-3.
It is formed in a V-shape or U-shape with a depth of approximately 5-20 mm at a position of approximately 0-70 mm.

Furthermore, in this masking sheet 1, the angle between the oblique side and the first side or the second side of the approximately right triangular main body 1a is 45 degrees, and the angle between the apex 1a-3, the notch 1d, and the notch 1f is 45°. The connecting line forms a right isosceles triangle. That is, strictly speaking, the main body portion 1a of the masking sheet 1 is located 10 to 3 points from the side connecting the cutout portion 1d and the cutout portion 1f in the right isosceles triangle.
It has a trapezoidal shape in which a strip (rectangle) having a width of about 0 mm extends toward the first side.

The masking sheet 1 may contain asphalt, and in this example is an asphalt-impregnated paper. Since the masking sheet 1 contains asphalt, it has excellent heat resistance and waterproof properties, and can improve handleability.

In the masking step, the masking sheet 1 is used to mask the non-painted areas of the dot lines. In this masking step, FIG. 4 shows a state in which the unpainted areas of the dot portions forming the dot lines on the road surface marked in the marking step are masked with a masking sheet 1 and an adhesive tape 2.

In Fig. 4, on a road where a white line 3a and a white line 3b are constructed on both sides, a dot line in which a plurality of dots are arranged in a broken line is constructed inside both white lines, parallel to the direction of traffic flow. The masking sheet 1 is placed on the masking sheet 1 based on the marking lines drawn on the wafer and the marking lines drawn perpendicularly to the direction of movement of the vehicle, and the masking sheet 1 is fixed with an adhesive tape 2.

Specifically, the road surface has a parallelogram shape, a length in the direction of traffic flow (length of the long side) of 1000 mm, and a width (height in the direction perpendicular to the direction of traffic flow) of 300 mm. In order to construct the parallelogram-shaped dots, as shown in Fig. 4, they are placed 350 mm from the inside (on the opposite lane side) contours of the white lines 3a and 3b in the direction of traffic flow (the white line 3).
Marking lines 4a and 4b are drawn along lines a and 3b), and marking lines 5a and 5b are drawn at intervals of 1000 mm in a direction perpendicular to the direction of traffic flow. A plurality of masking sheets 1 are placed on a road surface on which such marking lines are drawn, and a white line 3a and a marking line 4 are placed on the road surface.
a, the first area surrounded by the marking line 5a and the marking line 5b, and the second area surrounded by the white line 3b, the marking line 4b, the marking line 5a and the marking line 5b. The dot part is constructed.

In the first region, on the upstream side in the direction of traffic flow, the masking sheet 1 is placed so as to straddle the marking line 5b. Specifically, as shown in FIG. 4, the masking sheet 1 has the notch 1g and the notch 1e aligned with the marking line 4a and the marking line 5b, respectively, with the first convex part 1b facing downstream. Accordingly, the outer wall 1c- of the second convex portion 1c
3 is placed so as to match the inner contour of the white line 3a. By placing the masking sheet 1 on the road surface in this arrangement, the straight line connecting the upper wall 1c-4 of the second protrusion 1c and the apex 1b-1 of the first protrusion 1b will be It coincides with the outline (boundary) of the dot part on the upstream side in the flow direction. Therefore, as shown in FIG. 4, by pasting the adhesive tape 2 on the masking sheet 1 side along this straight line, the gap between the straight line (outline) and the masking sheet 1 (first protrusion 1b and the second convex portion 1c) can be masked with the adhesive tape 2. Further, by fixing the first convex portion 1b-1 and the second convex portion 1c of the masking sheet 1 to the road surface with the adhesive tape 2, the masking sheet 1 can be fixed to the road surface.
Furthermore, since the adhesive tape 2 is in close contact with the road surface while the masking sheet 1 is fixed to the road surface, the paint for forming the dots will infiltrate between the masking sheet 1 and the road surface in the next coating process. You can prevent yourself from doing so. In particular, the width of the adhesive tape 2 is adjusted to the width of the first convex portion 1b-
By making the height larger than the height of the first and second convex portions 1c (the shortest distance from the apex 1b-1, the apex 1c-1, or the apex 1c-2 to the oblique side), the adhesive tape 2 and the masking sheet 1 overlap. Since the adhesive tape 2 and the masking sheet 1 are in close contact with each other, it is possible to effectively prevent the paint from entering through the gap between the adhesive tape 2 and the masking sheet 1.

In the first region, the masking sheet 1 is placed on the downstream side of the marking line 5a on the downstream side in the direction of traffic flow. Specifically, as shown in FIG. 4, the masking sheet 1
On the downstream side of the marking line 5a, align the notch 1d with the intersection of the white line 3a with the inner outline marking line 5a, with the first protrusion 1b facing upstream, and align the notch 1f with the inside of the white line 3a. By matching the contour, the inner wall 1c-5 of the second convex portion 1c is placed in alignment with the marking line 4a, and the cutout portion 1h is placed in alignment with the marking line 4a. By placing the masking sheet 1 in this arrangement, the apex 1b-1 of the first convex portion 1b and the second convex portion 1c are
A straight line connecting the upper wall 1c-4 of the dotted portion coincides with the outline (boundary) of the dot portion on the downstream side in the direction of traffic flow. Therefore, as shown in FIG. 4, along this straight line, similarly to the upstream side,
By attaching the adhesive tape 2 to the masking sheet 1 side, the gap between the straight line (outline) and the masking sheet 1 can be masked by the adhesive tape 2.

In the second region, as shown in FIG. 4, on the upstream side in the direction of vehicle flow, the masking sheet 1 is placed in a manner corresponding to the masking sheet 1 on the upstream side in the first region, Both masking sheets 1 facing each other with respect to the central axis of the lane are arranged line-symmetrically with respect to the central axis. On the other hand, as shown in FIG. 4, on the downstream side in the direction of traffic, the masking sheet 1 is placed in a manner corresponding to the downstream masking sheet 1 in the first area, and is placed in the center of the lane. Both masking sheets 1 facing the axis are arranged symmetrically with respect to the central axis.

In this construction method, since the adhesive tape 2 matches the contour of the dot portion extending in a direction diagonally intersecting the direction of traffic flow, a second
This eliminates the need for the marking process, greatly improving work efficiency.

In the construction method of the present disclosure, the masking step may be any step of masking the road surface using a masking sheet, and can be selected as appropriate depending on the type of road marking. The process is not limited to fixing sheets with adhesive tape.

The method of masking the road surface using a masking sheet may be a method of simply placing the masking sheet on the road surface without fixing it to the road surface, but it is not affected by weather such as wind and rain and has excellent workability. In addition, a method in which the masking sheet is fixed to the road surface is preferable because it can prevent paint from entering between the masking sheet and the road surface.

The method of fixing the masking sheet to the road surface may be a method of fixing the masking sheet to the road surface without using adhesive tape, for example, when the masking sheet itself has an adhesive function. From these points of view, it is preferable to use adhesive tape to fix the masking sheet to the road surface.

(Coating process)
In the coating step, the masking sheet 1 and the adhesive tape 2 are combined as described above, and the heated paint is applied using a coating machine to the road surface where the non-painted areas of the dot portions have been masked. The coating machine is equipped with a melting tank for storing heated and melted paint, and a slit-shaped opening that allows the molten paint sent from the melting tank to flow down to the road surface and apply it, allowing flow coater type construction. Also called a machine (slitter type construction machine). The paint is heated and melted in the melting tank of the coating machine and applied to the road surface at a temperature of 180 to 220 degrees Celsius, but since the masking sheet 1 is made of asphalt-impregnated paper, it is heat resistant and nonflammable. Excellent, can prevent the paint from deforming or burning due to heat.

FIG. 5 shows how paint is applied to the first region of FIG. 4 to form dot lines using a hand-pushed flow coater type construction machine (road marking construction machine) having a slit opening as a coating machine. It is a schematic perspective view showing the state where it is applied to the road surface. As shown in FIG. 5, the worker 6
The coating machine 7 is moved along the white line 3a (the direction of traffic flow) in a direction opposite to the direction of traffic flow, and the paint is applied from the slit-shaped opening. The width of the paint film is from the marking line 4a to the white line 3.
It has a width of 300 mm on the a side and a thickness of about 1.5 mm. The coating is applied to the areas where dots are to be formed (the downstream end of the adhesive tape 2 on the upstream side and the marking line 4a) on the masking sheet 1.
The paint is applied by moving the paint machine along the direction of the flow of the car, starting from the point in front of the intersection (intersection with Coating is completed on the adhesive tape 2 or masking sheet 1 that has passed through. Downstream adhesive tape 2
On the downstream side of the intersection between the upstream end of the marking line 4a and the marking line 4a, the masking sheet 1 extends (protrudes) by 70 mm inward from the marking line 4a (on the white line 3b side). It is possible to suppress the paint applied on the masking sheet 1 from flowing out onto the road surface on which the masking sheet 1 is not laminated. In addition, in FIG. 5, the traveling direction of the paint sprayer is the direction opposite to the direction of flow of vehicles, but it may be the direction of flow of vehicles. The paint can also be applied to the second area in the same manner as the first area.

In the construction method of the present disclosure, the application step may be any step of applying paint to the road surface to form a road marking, and can be selected as appropriate depending on the type of road marking. The present invention is not limited to the process of applying heated and molten paint using a flow coater type construction machine having a slit-like opening.

The method of applying paint to the road surface may be by using a brush or the like without using a coating machine, or by using adhesive road marking materials, but from the viewpoint of productivity, it is preferable to use a coating machine. preferable.

As a method of applying paint to the road surface using a coating machine, it is possible to use a coating machine that is conventionally used for road markings, such as an on-vehicle coating machine (vehicle-mounted road marking application machine) or a spraying machine. (
Although a spray type construction machine) or the like may be used, a flow coater type construction machine having a slit-like opening is preferred from the viewpoint of simplicity. The flow coater type construction machine having a slit-like opening may be a hand-push type coating machine.

The temperature of the paint (application temperature) is not particularly limited and can be selected appropriately depending on the type of paint, and may be at room temperature, but the masking sheet has heat resistance and is suitable for heating work. The temperature may be 50°C or higher, preferably 100°C or higher, for example 120 to 250°C, preferably 150 to 230°C, and more preferably 180 to 220°C.

The type of paint is not particularly limited, and conventional traffic paint used for road markings can be used. Examples of the traffic paint include room temperature traffic paint (paint type water-based type, paint type solvent type), heating type traffic paint (paint type water-based type, paint type solvent type), melting type traffic paint, and the like. The traffic paint may be a road marking paint specified by JIS K5665. Among these, heating type traffic paint and melting type traffic paint are preferred, and melting type traffic paint (melting type paint) is particularly preferred since it allows thick road markings and is excellent in workability.

The traffic paint may contain a hot melt adhesive resin, and may contain an inorganic filler such as glass beads in addition to the hot melt adhesive resin.

Examples of the inorganic filler include glass beads, calcium carbonate, and titanium oxide. Among these, glass beads are preferred. The average particle size of the inorganic filler is, for example, about 0.05 to 5 mm, preferably about 0.08 to 3 mm, and more preferably about 0.1 to 1 mm.

Examples of hot-melt adhesive resins include ethylene-methacrylic acid copolymer resins, rosin-modified resins, petroleum resins, and ester-modified petroleum resins.

The proportion of the inorganic filler is, for example, 1 to 1 with respect to 100 parts by mass of the hot melt adhesive resin.
00 parts by weight, preferably 3 to 50 parts by weight, more preferably 5 to 30 parts by weight.

A particularly preferred application method is a method of applying the molten paint to the road surface using a flow coater type application machine having a slit-like opening. Since the masking sheet of the present disclosure contains asphalt, it has less influence on the temperature of the paint, and the masking sheet can be used to easily construct road markings with complicated shapes.

(Masking sheet removal process)
In the masking sheet removal step, the masking sheet 1 fixed with the adhesive tape 2 in the coating step is peeled off from the road surface together with the adhesive tape 2 while the paint is applied, thereby removing the paint remaining on the road surface. The shape of the dot part can be formed. especially,
By peeling off the masking sheet 1 and the adhesive tape 2 from the road surface before the heated paint is cooled and solidified, the work becomes smoother and the dot portions 8 shown in FIG. In this way, a shape that is faithful to the masked shape can be formed.

(Other processes)
Other steps are similar to conventional construction methods. In the dirt removal step, for example, a method of removing dust using an air blower such as a blower can be used. In the priming process, conventional adhesives such as silicone adhesives, olefin adhesives, acrylic adhesives, polyester adhesives, urethane adhesives, epoxy adhesives, asphalt adhesives, and rubber adhesives are used. The adhesive can be applied by conventional methods such as roller coating, machine coating, sponge coating, and the like. Depending on the shape of the masking sheet, if necessary, a second marking step may be provided to draw marking lines extending in a direction diagonally intersecting the direction of traffic flow. In the solidification step, for example, if the paint is a melt-type paint, the paint may be cooled by sprinkling water on the paint.

(Road markings)
In the construction method of the present disclosure, the shape of the road marking is not particularly limited, but from the viewpoint that construction by masking is effective, a shape having a curved part and/or a non-right angle part (a bent part that is not a right angle) is preferable, and a shape with an acute angle is preferable. Particularly preferred is a shape having a non-right angle part such as a corner or an obtuse angle part. In particular, it is effective to use a coating machine such as a flow coater type construction machine or a spray type construction machine, which has excellent workability, since it is difficult to form road markings with complicated shapes. Furthermore, with a flow coater type construction machine that has a slit-shaped opening, square or rectangular road markings can be easily constructed without using masking material. It is preferable to have a shape that has an outline that extends in the direction of the vehicle, a shape that has a curved shape, or a shape that has a curved outline.Since the number of constructions is large and the work is complicated, the shape has an outline that extends in a direction diagonally intersecting the direction of traffic flow. The shape is particularly preferred. Examples of the shape having an outline extending in a direction obliquely intersecting the direction of traffic flow include a parallelogram shape, a rhombus shape, an arrow feather shape, and a triangular shape. Among these, parallelogram shapes and rhombus shapes are preferable, and from the viewpoint of improving work efficiency through continuous work, a dashed line shape (or dotted line shape) in which parallelogram shapes or rhombus shapes are arranged at predetermined intervals (especially at equal intervals) is preferable. type) is particularly preferred.

Among road markings, deceleration road markings (deceleration marks or deceleration lane marks) are preferable because they require a large number of constructions and can improve workability. Although the deceleration road marking may be a mark type road marking, a broken line type road marking is preferable from the viewpoint of improving workability.

[Masking sheet]
The shape of the masking sheet of the present disclosure can be selected depending on the shape of the road marking, and is not limited to the shape shown in FIG. 3. Therefore, when the road marking has a curved outline, a masking sheet having a curved outline may be used.

In the case where the road marking is a dashed deceleration road marking, the masking sheet of the present disclosure can be applied diagonally to the direction of traffic on the road marking by placing the masking sheet with reference to the marking line, white line, or center line. The shape is not particularly limited as long as it can identify a line that matches the contour extending in the direction intersecting the . For example, as shown in Fig. 3, the masking sheet is not limited to a masking sheet that can form a gap in the area (boundary) where a road marking is formed, but the masking sheet alone can mask the area where a road marking is to be formed without forming a gap. It may also be a masking sheet that can be used.
Such a masking sheet may have an adhesive layer on the back surface for fixing it to a road surface.

Even if the masking sheet is a masking sheet that forms a gap with the area (boundary) forming the road marking and is fixed to the road surface with adhesive tape, the planar shape of the masking sheet is the shape shown in Figure 3. The shape is not limited to this, and may be approximately trapezoidal or the like. Furthermore, even if the planar shape of the masking sheet is a right-angled triangle, it is not limited to a right-angled isosceles triangular shape, and may be a right-angled non-isosceles triangular shape having an acute angle depending on the shape of the road marking. good. Furthermore, the masking sheet is not limited to an embodiment using a single masking sheet as shown in FIGS. 3 and 4, but may also be an embodiment using a plurality of masking sheets with different shapes. When the shape is not a right isosceles triangle, it is preferable to use a combination of multiple masking sheets with different shapes.

Among these, in constructing dot lines having parallelogram-shaped or rhomboid-shaped dots, a masking sheet with a planar shape of a right triangular shape is preferred because it can be constructed with a single masking sheet, and has excellent workability. From this point of view, a masking sheet (right triangular masking sheet having a convex portion) having a planar shape having a main body portion in the shape of a right isosceles triangle and a convex portion protruding from the oblique side of the main body portion is particularly preferred. In this right triangular masking sheet having a convex portion, the convex portion allows a gap to be formed between the oblique side and the outline of the road marking, and the convex portion and the gap are used to fix the masking sheet to the road surface with an adhesive tape. By doing so, masking can be performed with high workability.

The right triangular masking sheet having the protrusions is not limited to the shape shown in FIG. 3 as long as the protrusions are formed so that a line corresponding to the contour of the road marking can be specified.

The number of protrusions may be 1 or more on the oblique side, but 2 or more is preferable from the viewpoint of easy positioning on the road surface and easy prevention of paint from entering between the masking material and the road surface. is particularly preferred. The position of the convex part may be the center of the oblique side, but it is preferable to place it at the end of the oblique side in order to easily prevent the paint from entering between the masking material and the road surface. Particularly preferred.

The shape of the convex portion is not limited to the shape shown in FIG. 3, as long as the convex portion can identify a line corresponding to the contour of the road marking. The combination of protrusions may be, for example, a combination of triangular protrusions, a combination of parallelogram protrusions, or two or more types of protrusions including square protrusions, rectangular protrusions, etc. It may be a combination of If the dots of the deceleration road marking are in the shape of a parallelogram or rhombus with an acute angle of 45°, the road marking can be easily marked using one masking sheet without using multiple masking sheets with different shapes. A combination of a right triangular convex portion and a parallelogram-shaped convex portion as shown in FIG. 3 is preferable from the viewpoint of masking the area to be formed.

The size of the convex portion is preferably adjusted so that the height of the convex portion from the oblique side is smaller than the width of the adhesive tape. By adjusting the height of the convex part to be smaller than the width of the adhesive tape, when the masking sheet is fixed with adhesive tape along the top of the convex part, the adhesive tape and masking sheet overlap, which prevents paint from penetrating. can.

It is preferable that the masking sheet of the present disclosure is provided with a mark for positioning on the road surface with a marked line, and is not limited to a notch at the end as shown in FIG. 3, but may be a mark such as a line or a dot. Good too.

The average thickness of the masking sheet can be selected from a range of about 0.01 to 5 mm, and from the viewpoint of workability, it is preferably 3 mm or less, for example, 0.1 to 3 mm, preferably 0.3 to 2 mm, more preferably 0.4 to 2 mm. 1 mm, more preferably 0.4 to 0.8 mm. If the thickness of the masking sheet is too thin, there is a risk that heat resistance and waterproofness will be reduced, and if it is too thick, there is a risk that workability will be reduced.

The masking sheet may have an adhesive layer laminated on one side, and when a masking sheet having an adhesive layer is used, the masking sheet can be fixed to the road surface without using an adhesive tape. Among these, masking sheets without an adhesive layer are preferable because the masking sheet itself has high productivity and the masking sheet can be positioned on the road surface with high workability by fixing it to the road surface with adhesive tape. .

The material of the masking sheet of the present disclosure is not particularly limited, and may be either an organic material or an inorganic material. Examples of the masking sheet made of an organic material include a plastic sheet, a fibrous structure such as paper, and nonwoven fabric. Examples of the masking sheet made of an inorganic material include metal plates such as iron plates and stainless steel plates, and ceramic sheets. The masking sheet may be a sheet made of a material that is easily flammable, but it is preferably a sheet that is made of a material that is difficult to burn, since it is not easily affected by the paint that is heated at a high melting temperature, and the ignition time is 15. Particularly preferred are sheets made of materials that are more than sec. Further, among sheets made of materials that are difficult to burn, masking sheets whose ignition time is 15 seconds or more are particularly preferred.

In the present disclosure, the ignition time of the masking sheet can be measured by the time it takes for the flame of the burner to ignite, and in detail, it can be measured by the method described in the Examples below.

The masking sheet with an ignition time of 15 seconds or more may be a metal plate such as an iron plate, but from the viewpoint of ease of handling, a masking sheet containing a flame retardant is preferable, and a masking sheet containing asphalt is particularly preferable. Among these, masking sheets are made of fiber structures containing asphalt because they are highly heat resistant, waterproof, and flexible, so they can be used regardless of road conditions or weather, and they are also easy to install. It is most preferable to have one.

Examples of asphalt include natural asphalt (lake asphalt, rock asphalt, oil sand, asphaltite, etc.), petroleum asphalt (straight asphalt, blown asphalt, etc.), and the like. These asphalts can be used alone or in combination. Among these, petroleum asphalt such as straight asphalt is commonly used.

The penetration degree (1/10mm) of asphalt is not particularly limited, but is JIS K2207.
-1996, it can be selected from the range of 0 to 300, for example 10 to 300.
280, preferably 20-250, more preferably 50-200.

The proportion of asphalt is, for example, 10 to 300 parts by weight, preferably 30 to 200 parts by weight, and more preferably 50 to 150 parts by weight, based on 100 parts by weight of the fibrous structure.

The asphalt may be used as a modified asphalt (asphalt adhesive) by combining it with a modifier. Modifiers include organic modifiers and inorganic modifiers.

Examples of organic modifiers include polyolefins, vinyl polymers (e.g., polyvinyl chloride, acrylic resins, polyvinyl acetate, ethylene-vinyl acetate copolymers, ethylene-vinyl alcohol copolymers, ethylene-acrylic acid). copolymers, ethylene-methyl acrylate copolymers, ethylene-ethyl acrylate copolymers, etc.), polyamides, polyesters, synthetic rubbers or elastomers (e.g. polybutadiene, polyisoprene, styrene-butadiene copolymers, etc.), natural Rubbers, tackifiers (e.g., terpene resins, rosin resins such as natural rosin and modified rosin, petroleum resins, modified olefin polymers, etc.), oils and fats (e.g.,
naphthenic raw material oil, etc.). These organic modifiers can be used alone or in combination of two or more. Among these organic modifiers, thermoplastic elastomers, tackifiers, and oils and fats are preferred, and styrene-diene copolymers such as styrene-butadiene-styrene block copolymers are particularly preferred.

Examples of inorganic modifiers include metal particles (powder) of iron, copper, tin, zinc, nickel, stainless steel, etc.; iron oxide, iron sesquioxide, triiron tetroxide, ferrite, tin oxide, zinc oxide, Metal oxide particles such as zinc white, copper oxide, and aluminum oxide; Metal salt particles such as barium sulfate, calcium sulfate, aluminum sulfate, calcium sulfite, calcium carbonate, calcium bicarbonate, barium carbonate, and magnesium hydroxide; steelmaking slag, slate Examples include mineral particles such as chips, mica, clay, talc, wollastonite, diatomaceous earth, silica sand, pumice powder, silica balloons, glass balloons, and shirasu balloons; inorganic fibers such as glass fibers and carbon fibers. These inorganic modifiers can be used alone or in combination of two or more.
Among these inorganic modifiers, particulate modifiers such as iron particles, various iron oxide particles, steelmaking slag particles, talc, and (bi)calcium carbonate particles are preferred. The average particle size of the particulate modifier is 0.0
1 to 0.5 mm (especially 0.05 to 0.2 mm).

Note that in this specification and claims, the average particle size means the center particle size (D50) measured on a volume basis using a laser diffraction particle size distribution analyzer.

The organic modifier and the inorganic modifier may be used in combination to improve heat resistance and waterproofness.

The mass ratio of asphalt and modifier is, for example, asphalt/modifier = 100/0 ~
Can be selected from a range of about 30/70, for example 99/1 to 40/60, preferably 98/2
It can be selected from the range of about 50/50, more preferably about 95/5 to 60/40. When the modifier is an organic modifier, the mass ratio of both is, for example, asphalt/organic modifier = 100/0 to 70/30, preferably 99/1 to 80/20, more preferably is 95
It is about /5 to 85/15. If the proportion of the modifier is too small, the modification effect will not be exhibited, and if it is too large, the viscosity will increase, making processing difficult, and there is a possibility that the economical efficiency will also decrease.

When combining an organic modifier and an inorganic modifier, the mass ratio of both can be selected from the range of, for example, organic modifier/inorganic modifier = 99/1 to 1/99, For example 90/1
0 to 10/90, preferably 80/20 to 20/80, more preferably 70/30 to 3
It is 0/70.

The penetration degree (1/10 mm) of the modified asphalt modified with a modifier can be selected from the range of about 0 to 100, for example, 5 to 80, preferably 10 to 50, more preferably 20 to 3.
It is 0.

The fibers that make up the fiber structure include, for example, natural fibers (cellulose fibers such as cotton and hemp), regenerated fibers (rayon, etc.), semi-synthetic fibers (cellulose ester fibers, etc.), synthetic fibers [polyolefin fibers (polyethylene polypropylene fibers, polypropylene fibers, etc.), styrene fibers, polytetrafluoroethylene fibers, acrylic fibers, vinyl alcohol fibers (ethylene vinyl alcohol fibers, etc.), polyester fibers (polyethylene terephthalate, polyethylene naphthalate, etc.) _C2-4 alkylene-arylate fibers, fully aromatic polyester fibers such as liquid crystal polyester fibers, etc.), polyamide fibers (fully aromatic polyamide fibers such as aliphatic polyamide fibers such as polyamide 6 and polyamide 66, and aramid fibers) (fibers, etc.), polyurethane fibers, etc.], and inorganic fibers (carbon fibers, glass fibers, etc.). The synthetic fiber may be a composite fiber made by combining different types of resin components. These fibers can be used alone or in combination. Among these fibers, synthetic fibers such as polyolefin fibers and polyester fibers, and inorganic fibers are commonly used, but from the viewpoint of light resistance to ultraviolet rays, _polyC2-4 alkylene-arylate fibers such as polyethylene terephthalate fibers are used. Fibers are preferred.

Fibrous structures include woven fabrics, knitted fabrics, nonwoven fabrics, nets, paper, and the like. Among these, paper and nonwoven fabric are preferred, and paper is particularly preferred, in view of their excellent asphalt impregnation properties.

Paper (or base paper) contains at least pulp. In terms of material, pulps include wood pulp (softwood pulp, hardwood pulp, etc.), non-wood pulp (rag pulp, linter pulp, linen pulp, kozo, mitsumata, gampi pulp, straw pulp, bagasse pulp, kenaf pulp, bamboo pulp, etc.), Examples include synthetic fiber pulp and waste paper pulp (recycled paper, etc.).
Further, the pulp may be mechanical pulp from the viewpoint of pulping means, or may be chemical pulp (kraft pulp, sulfite pulp, etc.) from the viewpoint of strength. Furthermore, the pulp may be unbleached pulp or bleached pulp.

In addition to pulp, paper may also contain fibers other than pulp. Paper also contains conventional additives, such as fillers (clay, talc, calcium carbonate, titanium dioxide, etc.), sizing agents (acid sizing agents such as rosin; neutral sizing agents such as alkylteken dimer, etc.), paper It may also contain strength enhancers (starch, polyacrylamide, etc.), pigments (or dyes), antifoaming agents, etc.

Paper can be prepared by a conventional method, for example, by wet-forming a composition (slurry) containing optionally beaten pulp and water. Wet papermaking may be performed using a conventional paper machine, such as a Fourdrinier paper machine or a cylinder paper machine.

[Adhesive tape]
The adhesive tape is not particularly limited as long as an adhesive layer is laminated on one side of the fiber sheet.
It may be an adhesive tape in which an adhesive layer is laminated on one side of paper, an adhesive tape in which an adhesive layer is laminated on one side of cloth, or the like. Among these, adhesive tapes in which an adhesive layer is laminated on one side of paper are preferred, and kraft tapes are particularly preferred, since they can be easily cut and have excellent workability.

The width of the adhesive tape is such that when a masking sheet is placed on an area where a road marking is to be formed, and the adhesive tape is used to mask the gap, and the masking sheet is fixed to the road surface, the gap can be masked. Although any width may be used, it is preferable to make the width of the adhesive tape larger than the width of the gap in order to prevent paint from entering through the gap between the adhesive tape and the masking sheet. By making the width of the adhesive tape larger than the width of the gap, the masking sheet and the adhesive tape overlap at the location where the adhesive tape is fixed, thereby suppressing infiltration of paint.

The width of the adhesive tape may be 1.05 times or more the width of the gap, for example, 1.05 times or more the width of the gap.
05 to 5 times, preferably 1.1 to 3 times, more preferably 1.2 to 2 times, more preferably 1.3 to 1.7 times.

EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to these Examples at all.

Example 1
The dot line was constructed according to the following process. First, in order to place the masking sheet, marking lines shown in Figure 4 were drawn on the road surface of the lane.

Next, after removing dust from the road surface using a blower, a primer was applied to the dot line construction area using a primer sprayer.

As shown in FIG. 4, a masking sheet (thickness 0.6 mm,
Asphalt-impregnated paper (rug base paper impregnated with 113% by mass of asphalt with a penetration degree of 60 to 80) was placed on the road surface and fixed with craft tape 75 mm wide and 400 mm long.

As shown in Figure 5, using a hand-operated flow coater type construction machine with a slit-shaped opening, apply the coating over a width of 300 m from the top of the masking sheet along the marking line parallel to the direction of traffic flow.
The molten paint was applied at a thickness of 1.5 mm and a thickness of 1.5 mm.

After coating, the masking sheet and craft tape coated with the paint were collected before the paint solidified.

As shown in FIG. 7, the masking sheet 31 is installed at an angle of 45° to the bottom surface 32 of the combustion test box, and the burner 33 is adjusted to a flame height of 65 mm, with the tip of the flame touching the masking sheet. As a result of checking the ignition time, it was about 54 seconds.

Example 2
The dot line was constructed according to the following process. First, in order to place the masking sheet, marking lines shown in Figure 4 were drawn on the road surface of the lane.

Next, after removing dust from the road surface using a blower, a primer was applied to the dot line construction area using a primer sprayer.

In addition to the marking lines shown in FIG. 4, diagonal marking lines were drawn using plywood with a right isosceles triangular planar shape to indicate the locations where the masking sheet was to be fixed with craft tape.

A masking sheet (thickness 0.6 mm, asphalt-impregnated paper made by impregnating rug base paper with asphalt with a penetration degree of 60 to 80 at a ratio of 113% by mass) having the planar shape shown in FIG.
It was placed on the road surface with the distance between the hypotenuse of the right triangle and the diagonal marking line adjusted to 50 mm (the arrangement of the masking sheet was the same as in FIG. 4). A craft tape with a width of 75 mm and a length of 400 mm was attached to the masking sheet side along the marking lines to fix the masking sheet to the road surface.

After coating in the same manner as in Example 1, the masking sheet and craft tape coated with the paint were collected before the paint solidified.

Comparative example 1
The dot line was constructed according to the following process. First, in order to mask the road surface, marking lines shown in Figure 4 were drawn on the road surface of the lane.

Next, after removing dust from the road surface using a blower, a primer was applied to the dot line construction area using a primer sprayer.

In addition to the marking lines shown in FIG. 4, marking lines were drawn to indicate the areas to be masked with craft tape, as shown in FIG. 2, using plywood with a right isosceles triangular planar shape.

Along the marking line, in the same place as in Example 1 and Example 2, a width of 75 mm and a length of 4
After pasting the 00 mm craft tape, as shown in Figure 2, in Example 1 and Example 2, the craft tape was pasted sequentially to the area where the masking sheet was placed, and in Comparative Example 1, a total of 6 craft tapes were pasted. I masked off the unpainted areas of the paint with craft tape.

As shown in FIG. 5, a hand-operated slitter-type construction machine was used to apply molten paint to a width of 300 mm and a thickness of 1.5 mm from above the masking sheet along the marking line in the direction of traffic.

After coating in the same manner as in Example 1, the coated craft tape was collected before the coating solidified.

In the construction of each of the examples and comparative examples, two workers worked, the dots were constructed in more than 20 locations, and the working time required to specify the area of one dot (paint was applied after primer treatment). The average values of the time taken to reach a state ready for application) were compared. 19 in Example 1
．． While it was 6 seconds, it was 23.1 seconds in Example 2 and Comparative Example 1. Comparative example 1
In addition to being more susceptible to the effects of melted paint and weather than in Examples, the workability was also lower than in Example 1. Further, in Comparative Example 1, it was necessary to repeat the work of applying the craft tape half-heartedly multiple times, and the physical burden on the worker was greater than in Examples 1 and 2.

The ignition time of the craft tape instead of the masking sheet was measured in the same manner as in Example, and was approximately 6 seconds, which was significantly shorter than the approximately 54 seconds of Example 1.
It was confirmed that the masking sheet used in Example 1 was less likely to catch fire than the craft tape of Comparative Example 1, and that the work could be performed safely.

The masking sheet of the present disclosure is used to mask unpainted areas of road markings in the coating process of applying paint to the road surface to form road markings such as deceleration road markings, and is used to mask unpainted areas of road markings such as dashed deceleration marks or deceleration marks. It is particularly useful for constructing lane markings.

1... Masking sheet 1a... Main body part 1b... First convex part 1c... Second convex part 1d to 1h... Notch part 2... Adhesive tape 3a, 3b... White line 4a, 4b, 5a, 5b... Marking line 6... Work Person 7... Painter 8... Dot part

Claims (7)

A masking step of masking the non-painted area of the deceleration road marking using a masking sheet, which is a fibrous structure containing straight asphalt with a penetration degree of 50 to 200 (1/10 mm), and applying the deceleration road marking to the road surface masked in the masking step. 1. A method for constructing a deceleration road marking comprising a coating step of applying a melt-type paint at a temperature of 100° C. or higher to form a deceleration road marking,
The proportion of the straight asphalt is 50 to 150 parts by mass with respect to 100 parts by mass of the fibrous structure,
The deceleration road marking has a broken line shape in which a plurality of dots are arranged in parallel at predetermined intervals along the direction of vehicle flow;
The upstream and downstream ends of the dot portion in the direction of vehicle flow are hypotenuses extending in a direction obliquely intersecting the direction of vehicle flow;
The planar shape of the masking sheet is a right triangular shape from which a line that coincides with the hypotenuse that is the outline of the deceleration road marking can be identified;
A construction method in which the masking sheet is fixed to a road surface using an adhesive tape or the adhesive function of the masking sheet itself, and which does not include a marking step for drawing a marking line corresponding to the oblique side. In the masking step, the masking sheet is placed with a gap provided to the painted area of the deceleration road marking, the masking sheet is fixed to the road surface using the adhesive tape, and the gap is filled with the adhesive tape. The construction method according to claim 1, further comprising masking and fixing the masking sheet to the road surface. 3. The construction method according to claim 1, wherein in the coating step, the paint is applied using a flow coater construction machine having a slit opening. A masking step of masking the non-painted area of the deceleration road marking using a masking sheet, which is a fibrous structure containing straight asphalt with a penetration degree of 50 to 200 (1/10 mm), and applying the deceleration road marking to the road surface masked in the masking step. A masking sheet which is a fibrous structure containing asphalt and is used in a construction method for deceleration road markings that includes a coating process of applying a melt-type paint at a temperature of 100° C. or higher to form a
The proportion of the straight asphalt is 50 to 150 parts by mass with respect to 100 parts by mass of the fibrous structure,
The deceleration road marking has a broken line shape in which a plurality of dots are arranged in parallel at predetermined intervals along the direction of vehicle flow;
The upstream and downstream ends of the dot portion in the direction of vehicle flow are hypotenuses extending in a direction obliquely intersecting the direction of vehicle flow;
The planar shape of the masking sheet is a right triangular shape from which a line that coincides with the hypotenuse that is the outline of the deceleration road marking can be identified;
The masking sheet is fixed to a road surface using an adhesive tape or the adhesive function of the masking sheet itself, and the construction method includes a scribing step for drawing a scribing line corresponding to the oblique side. No masking sheet. The planar shape of the masking sheet includes a main body in the form of a right-angled isosceles triangle, and a convex part that protrudes from the oblique side of the main body and forms a gap between the oblique side and the contour of the deceleration road marking. The masking sheet according to claim 4. A claim in which the convex portion includes a first convex portion in the shape of a right triangle protruding from one end of the hypotenuse, and a second convex portion in the shape of a parallelogram protruding from the other end of the hypotenuse. Masking sheet according to item 5. 7. The masking sheet according to claim 5, wherein a notch is formed for positioning with respect to a road surface on which a marking line is drawn.

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