JPS5824058A - Air permeable tape and construction thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ventilation tape and a method for applying the same.

Therefore, the present invention provides a ventilation tape between the waterproof coating layer and the base slab to ventilate air, water vapor, etc. that accumulates between the waterproof layer and the base slab to the outside air. This is related to tape, and for the purpose of adhering and fixing the ventilation tape base material l to the base slab surface, an adhesive layer is provided in advance in a grid pattern on the tape surface, and the adhesive layer is applied to the area of the tape base material. The area occupied by the adhesive layer is 3 times to 3 times.
Ventilation gap 3 in the range of 0 ratio, residual glue j to 70 ratio
When the waterproof layer is formed by covering the tape with a waterproof coating layer, the upper surface of the tape is brought into close contact with the waterproof coating layer.

Conventionally, concrete base slabs have been found to contain excess moisture other than the water required for cement crystallization, and moisture has been added to the concrete base slabs due to rain, snow, dew, etc. before the waterproof coating is applied. It is inevitable that such a layer exists, and if a waterproof coating is applied to such a concrete base slab using the normal method, the temperature will rise due to radiant heat from the sun after the waterproofing layer is installed. At this time, water present in the concrete base slab becomes water vapor and evaporates and expands between the concrete base slab and the waterproof coating, often causing a significant blistering phenomenon in the waterproof layer.

Various construction methods have been tried and implemented to prevent the blistering phenomenon of the waterproof coating layer at this size. However, there is no decisive factor in preventing blistering, and there is no choice but to use insulation methods, etc.
Partial floating construction methods, etc. have been used in the past, but when waterproofing coatings are applied to rain, snow, wire diameter, or when the waterproofing coating layer is installed when the concrete base slab is insufficiently dry, waterproofing is always required. It is a fact that a blistering phenomenon occurs in the layer.

The present invention aims to provide a luminous ventilation tape that solves the drawback of the blistering phenomenon that could not be prevented in the past. Because the ventilation tape is interposed between the layers, when the remaining water vaporizes, the water vapor passes between the ventilation tape and the base slab surface and releases the outside air before the waterproof coating layer swells. The purpose of the present invention is to provide a ventilation tape and a method for constructing the ventilation tape for keeping the swelling pressure of water vaporized at the same pressure as the outside air pressure. A feature of the present invention is that the ventilation tape and the waterproof coating layer are brought into close contact with each other, and a gap of 5 to 70% is provided between the ventilation tape and the concrete base slab, allowing gas to pass through. Since the ventilation tape and the waterproof coating layer are in close contact with each other, it is possible to prevent water vapor from stagnating between the waterproof coating layer and the ventilation tape and causing a blistering phenomenon.

In the present invention, in order to adhesively fix the tape, an adhesive adhesive layer is provided in advance in a grid pattern on one side of a ventilation tape base l, and the tape base l is made of synthetic resin. film or sheet, rubber tape or sheet,
Woven or non-woven fabrics, other paper, and secondary processed products of paper are used.

It is preferable that the ratio of the area occupied by the tacky adhesive layer in contact with one side of the tape base material 1 in a lattice pattern is in the range of j to 30%. This is because when creating a ventilation gap,
If the adhesive strength of the adhesive fixed to the waterproofing base is weak, there is a drawback that the waterproofing coating construction work is time-consuming.

Examples of commonly used tape base materials 1 include polyethylene, polypropylene, polyethylene-vinyl acetate copolymer resin, vinyl chloride, polyester, polyethylene terephthalate, etc. as synthetic films or sheets. Synthetic rubber tapes or sheets include ethylene propylene rubber, polybutadiene rubber, styrene-butadiene rubber, chloroprene rubber, butyl rubber, block polymerized styrene-butadiene rubber, natural rubber, etc.Other tapes made of cotton or synthetic all-fiber woven or non-woven fabrics A tape-like body made of paper, paper, or a secondary processed product of paper is used.The adhesive layer, which is pre-contacted in a grid pattern on the tape base material, is made of rubber-based or synthetic resin-based adhesive. Configure.

For example, the adhesive is preferably one that maintains its tackiness for a long time, and the solvent 21;! ! It is formed by point-contacting it to a tape base material using an adhesive such as an emulsion type adhesive or a heat-melting type adhesive.

The present invention will be further explained below with reference to Examples.

Example 1 A ventilation tape made of a polyester film having a width of approximately aomm as a ventilation tape base l, and a heat-melted adhesive layer in a circular shape of approximately ≠ mtnφ was dot-bonded with a center spacing of 7.2 mm in a lattice pattern. tape was used.

When the moisture content of the concrete IJ-cont waterproof base was measured using a high-frequency moisture meter, /! For concrete bases that have a value that exceeds the limit, apply a primer, dry it, and then apply the tape vertically to half of the waterproof base! The remaining half was set at ocm spacing and horizontal pm spacing, and the remaining half was not treated with ventilation tape using the conventional construction method, and was waterproofed using synthetic polymer roof ink (non-vulcanized butyl rubber sheet). The end of the ventilation tape was connected to the outside air at the rising end to prevent rain.

As a result, when the external appearance of the waterproof coating layer was inspected after 3 days, it was found that the cylindrical part constructed using the conventional method had many bulges, but the cylindrical part constructed using the ventilation tape of the present invention Then, the swelling phenomenon could not be controlled at all.

From the above results, it was confirmed that the effect of preventing the blistering phenomenon of the waterproof coating layer was remarkable.

As mentioned above, the present invention has the sufficient effect of preventing the blistering phenomenon caused by moisture and air in the substrate in the conventional membrane waterproofing method, which has not been possible previously, and can reduce delays in waterproofing work due to rain, snow, and dew. , which is useful for shortening the construction period and has the effect of preventing accelerated deterioration of the material due to the blistering phenomenon.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing one embodiment of the present invention, FIG. 2 is a schematic cross-sectional view thereof, and FIG. 3 is a perspective view showing a waterproof coating layer provided with a ventilation tape according to the present invention. Agent, 3... Ventilation gap, Hiro... Concrete base,
j... Waterproof membrane layer, t... Ventilation tape, 7...
Closing the vent from rain. Patent applicant Hayakawa Rubber Co., Ltd.

Claims (1)

[Scope of Claims] 1. A ventilation tape characterized in that a tacky adhesive layer 2 is provided on one side of a tape base l to fix the tape base l to a base surface. 2. The ventilation tape according to claim 1, wherein the tape base material is made of a synthetic resin film, a sheet made of synthetic rubber or natural rubber, a woven or nonwoven fabric, paper, or a processed product thereof. 0 6. The ventilation tape according to claim 1, wherein the ratio of the area occupied by the adhesive layer to the surface area of the tape base material is in the range of J'% to 30%. 4. On one side of the tape base material l, apply a ventilation tape provided with a sticky adhesive layer for adhering the tape base material l to the waterproof base slab ≠ vertically (in yellow) to attach the waterproof layer. t
A method for constructing a ventilation tape, characterized in that the tape base material/surface is brought into close contact with a waterproof layer.