JP4746791B2 - Roofing material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, it is possible to secure a sufficient anti-slip property, particularly a roof underlay material for maintaining the waterproofness of the roof by interposing it between the top cover material such as tile, slate type and metal and the base plate. This is related to roofing materials.
[0002]
[Prior art]
In laying the underlaying material on the sloped roof, it is important to devise the underlaying material so that the operator does not slip his / her foot. Conventionally, there are (1) asphalt roofing in which mineral particles are scattered on the entire surface and (2) a waterproof sheet in which an embossed resin sheet is applied to the surface.
[0003]
[Problems to be solved by the invention]
However, in the case of the former (1), since the mineral powder particles were scattered all over the surface, the purpose of being difficult to slip was achieved, but the problem was pointed out that the product became heavy and difficult to handle by the installer. That is, recently, the construction workers are aging, and there is a strong demand for a lightweight roof underarm. In the latter case (2), the waterproof sheet to which the embossed sheet is applied is lightweight, but it has a drawback that it becomes slippery when it gets wet during work and becomes dangerous.
[0004]
The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a roofing roof material that is light and difficult to slip (even if it gets wet in the rain).
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the roof underlaying material according to the present invention imparts anti-slip properties by partially coating a resin on the surface of the waterproof sheet and spreading an anti-slip aggregate on the outer surface of the resin part. Configured to do.
[0006]
There are two methods for imparting anti-slip properties. One is a method of partially coating a waterproof sheet with a resin mixed with an anti-slip aggregate, and the second is a method in which the anti-slip aggregate is scattered from a partially coated resin. In the former (first), the anti-slip aggregate with a coarse particle size is mixed with the resin and partially coated on the waterproof sheet. As a result of the trial, the anti-slip aggregate sinks in the resin and does not come out on the surface. Various obstacles occurred such as the prevention effect could not be sufficiently exhibited, the plate was clogged, and the anti-slip aggregate mixed with the coating device was worn.
[0007]
On the other hand, in the latter (second), since the anti-slip aggregate is scattered after the resin is partially coated, the aggregate itself is fixed so that it protrudes from the surface of the resin block, and is caught on the shoe sole of the installer. It became clear that it became very light because the area where the anti-slip aggregate was scattered was as small as 25% or less of the total area. In addition, since no coarse aggregate was mixed in the resin, clogging of the plate and wear of the coating apparatus did not occur. In consideration of the above, the latter “scattering” method is adopted in the present invention.
[0008]
In addition, the roof underlay material according to the invention of claim 2 is characterized in that a paint is applied to the surface of the waterproof sheet including the scattering surface of the anti-slip aggregate, and is configured to improve cosmetic properties. .
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic plan view of the lower glazing material of the present application, FIG. 2 is an enlarged cross-sectional view showing a state where the anti-slip aggregate is scattered on the surface of the resin mass, and FIG. (A) is the 1st example of a waterproof sheet, (b) has shown the 2nd example of the waterproof sheet.
[0010]
In the figure, 1 is a waterproof sheet, and 2 is a resin mass in which the surface of the waterproof sheet 1 is partially coated with resin. The resin lump 2 has a mountain shape in FIG. 2, but may be semicircular or flat. Moreover, although the planar shape is circular in FIG. 1, it may be linear or non-circular.
[0011]
The resin of the resin mass 2 is not particularly limited, but acrylic, EVA (ethylene-vinyl acetate copolymer), SBR (styrene butadiene rubber = synthetic rubber), PE (polyethylene), PP (polypropylene), urethane, epoxy General-purpose polymers such as these or copolymers or mixtures thereof can be used.
[0012]
In the resin of the resin mass 2, fillers such as charcoal cal, talc, clay, and silica may be added for the purpose of fluidity adjustment and cost reduction. In this case, it is preferable that the mixing ratio of the filler is low and the particle size is fine in consideration of wear of the coating apparatus.
[0013]
Although the said waterproof sheet 1 is not specifically limited, FIG. 3 (a), (b) shows an asphalt type thing. For example, in FIG. 3A, a fibrous sheet (eg, 80 g / m 2) 1a such as a nonwoven fabric, a modified asphalt layer (eg, thickness 0.5 mm) 1b, and asphalt-impregnated kraft paper (eg, 50 g / m 2). m2) 1c are laminated in this order from the top. The waterproof sheet 1 shown here is commercially available as a so-called high-grade roof covering material.
[0014]
FIG. 3B shows a fibrous sheet (eg, 50 g / m 2) 1a ′ such as a nonwoven fabric, an asphalt layer (eg, 0.2 mm thick) 1b ′, and a roofing base paper impregnated with asphalt (eg, 190 g / m 2). ) 1c ′, an asphalt layer (eg, 0.2 mm thick) 1b ″, and a mineral particle layer 1d for preventing adhesion are laminated in this order from above.
[0015]
Although not shown, the waterproof sheet 1 may be a resin sheet such as a polyolefin sheet or a PVC sheet, or a rubber-based sheet such as NBR or non-vulcanized butyl.
[0016]
As shown in FIG. 2, an antiskid bone material 3 is scattered on the outer surface of the resin mass 2 formed on the surface (fibrous sheet) of the waterproof sheet 1. Since this spreading is performed after the resin lump 2 is coated and while the resin lump 2 still retains the fouling property (before it hardens), the aggregate itself is the resin lump 2 as shown in FIGS. It is fixed so that it protrudes from the surface. Therefore, the contractor's catch on the sole is improved.
[0017]
As the anti-slip aggregate 3, quartz sand, charcoal cal, ceramic powder, ore, etc. can be selected and used. As the particle size, for example, in the case of silica sand, it is desirable to use No. 7-8 (50-200 μm).
[0018]
As shown in FIGS. 3 (a) and 3 (b), a water-resistant paint 4 including the surface of the resin mass 2 on which the anti-slip bone material 3 is scattered may be applied to the surface of the waterproof sheet 1. That is, the application of the paint 4 has an effect of making the appearance beautiful and increasing the commercial value. In particular, when white paint is used as this paint, it is possible to provide improved design and inkability (such as drawing a register line such as a cutting line) and to suppress the temperature rise of the sheet surface during summer construction. It is more preferable at the point which can be performed.
[0019]
【Example】
A waterproof sheet 1 in which a modified asphalt layer (thickness 0.5 mm) is sandwiched and laminated between a nonwoven fabric (80 g / m 2) and kraft paper impregnated with asphalt (50 g / m 2). A resin lump 2 is formed by partially coating the surface (nonwoven fabric surface) of the resin with the resin lump 2, and while the resin lump 2 still retains the fouling property, silica sand No. 7 is applied to the outer surface of the litter block. The material 3 was scattered. At this time, the diameter D of the resin lump 2 is determined to be 3 mm, the height H of the resin lump 2 is H = 0.2 mm, and the distance P between the centers of the resin lump 2 is 9 mm. It was laid on two types of roofs, a gradual gradient and a 7-dimensional gradient, and it was confirmed that both had high anti-slip performance after trials of anti-slip property in a dry state and anti-slip property when wet with water. .
[0020]
【The invention's effect】
As described above, the roof underlay material according to the present invention is partially coated with a resin on the surface of the waterproof sheet, and the resin still retains the gelability on the outer surface of the resin part . Since it is characterized by the fact that anti-slip aggregates are scattered, the anti-slip aggregate is fixed to the surface of the partially coated resin mass, so it is lightweight overall and has sufficient anti-slip properties. There is an excellent effect of being able to.
[0021]
Further, the roof covering material according to the invention of claim 2 is characterized in that a paint is applied to the surface of the waterproof sheet including the scattering surface of the anti-slip aggregate, so that the appearance is clean and construction There are excellent effects such as improving the workability, such as making a black ink occasionally.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a lower brazing material of the present application.
FIG. 2 is an enlarged cross-sectional view showing a state where a resin block and anti-slip aggregates are scattered on the surface thereof.
FIG. 3 is a partial cross-sectional view of the lower brazing material of the present application, in which (a) shows a first example of a waterproof sheet and (b) shows a second example of the waterproof sheet.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Waterproof sheet 2 Resin lump 3 Anti-slip aggregate 4 Paint D Resin lump diameter H Resin lump height P Distance between resin lump centers

Claims (2)

The surface of the waterproof sheet is partially coated with a resin, and the anti-skid bone material is scattered on the outer surface of the resin part while the resin still retains the gelability. Roof underwood.   The roof underlaying material according to claim 1, wherein a paint is applied to a surface of the waterproof sheet including a scattering surface of the anti-slip aggregate.

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