JPH0518064A - Joining method of water-barrier sheet - Google Patents

Abstract

PURPOSE:To improve the efficiency of execution and quicken execution by mechanically joining the end section of a water-barrier sheet connected by a rivet, a fastener, etc., while covering the external surface of the sheet with a curing type watertight sealing medium. CONSTITUTION:The end sections of water-barrier sheets 1, 2 connected are joined mechanically by a fastener 3, etc. A curing type water-tight sealing medium 4 is executed on the external surfaces of joining sections. Complete watertight execution is conducted rapidly without being affected by weather, an atmospheric temperature, etc. Accordingly, execution can be carried out efficiently.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of joining water-proof sheets.

[0002]

2. Description of the Related Art Impermeable sheets are installed on buildings and artificial beauty ponds.

Although the buildings and artificial beauty ponds to be constructed here are vast, the water-impervious sheet has a short size in view of factory equipment and transportation technology. For this reason, when constructing a water blocking sheet, the terminals of the water blocking sheet are connected together.

The water-impermeable sheets are connected to each other at their terminals by an adhesive or by hot-melt adhesion of the water-impermeable sheets themselves.

[0005]

However, the method of bonding the terminals of the water-blocking sheet to each other by means of an adhesive is difficult to be affected by the weather, temperature, etc. at the construction site. For example, in the case of rain or condensation. However, there is a problem that an adhesive defect portion is generated under the influence of moisture.

Further, in the method of adhering the water-blocking sheet itself by hot-melt adhesion, there is a problem that the adhesion becomes insufficient when the temperature is low and the sheet at the connecting portion is thermally deformed when the temperature is high.

The present invention has been made in view of the above point, and the purpose thereof is to solve the above-mentioned drawbacks of the prior art and to provide a water-impermeable sheet which can be completely bonded under any environment. It is to provide a joint method.

[0008]

SUMMARY OF THE INVENTION The gist of the present invention is to seal an outer surface of a connecting portion of a mechanically connected water-permeable sheet made of a polymer material with a water-tight sealing material. That is, in the joint method of the water-blocking sheet, the terminal portion of the water-blocking sheet to be connected is fixedly connected by a mechanical means, and then the hardening type watertight sealing material is applied on the outer surface of the connecting portion.

In the present invention, a rubber sheet or a plastic sheet having water impermeability, weather resistance and flexibility is used as the water impervious sheet.

Examples of the rubber sheet include ethylene propylene rubber, butyl rubber, chloroprene rubber and the like.

Examples of plastic sheets include vinyl chloride resin and chlorinated polyethylene sheets.

The waterproof sheet has a thickness of about 0.8 to 2.0 mm.

In the present invention, the mechanical connection of the waterproof sheet means connecting the terminals of the waterproof sheet to be connected by a mechanical method.

[0014] Practical mechanical connection of the water-blocking sheet includes a stud fastening method and a fastener fastening method.
Of course, it is not limited to these.

The tacking method is a method in which the terminals of the water-blocking sheets to be connected are overlapped with each other at an appropriate distance, for example, 100 to 200 mm, and the tacks are driven into the overlapped portions and fixed.

In the fastener fastening method, first, a water impervious sheet with a fastener is manufactured by bonding a fastener to an end of the impermeable sheet with an adhesive or a vulcanizing adhesive at a factory. Next, it is a method of temporarily placing on both sides of the waterproofing sheet with both fasteners to be connected on the construction surface so that the terminals do not overlap each other, and finally fastening the fastener.

In the present invention, the water-tight seal material may be any one that can provide water impermeability to the joint portion, and examples thereof include curable liquid silicone, curable liquid polyurethane, and curable unvulcanized butyl rubber tape.

The water-tight sealing material is suitable for room temperature curing type, but may be heat curing type.

Here, as the curable unvulcanized butyl rubber tape, butyl rubber is mixed with an appropriate amount of vulcanizing material and vulcanization accelerator,
It is a tape-shaped mixture of a proper amount of a novolak type alkylphenol resin.

Further, when these water-tight sealing materials are of underwater hardening type, underwater joints are possible.

[0021]

The joint method of the water-proof sheet according to the present invention enables quick and easy fixed connection by mechanical means, and seals the outer surface of the mechanical fixed connection portion with a water-tight sealing material, thereby improving weather and temperature. It is to be able to quickly and completely ensure water tightness without being affected by

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a joint method for a water blocking sheet according to the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a joint method for water-proof sheets according to the present invention.

In FIG. 1, 1 is a water impervious sheet with a fastener on one side to be connected, 2 is a water impervious sheet with a fastener on the other side to be connected, 3 is a fuser, and 4 is a watertight seal material.

In this embodiment, the waterproof sheet is ethylene propylene diene rubber having a thickness of 1.5 mm and a width of 1,200 mm, and the watertight sealing material is room temperature curable unvulcanized butyl rubber tape.

That is, in this embodiment, the fasteners 3 are preliminarily provided at the terminals of both of the water blocking sheets to be connected at the factory.
And water-proof sheets 1 and 2 with a fastener are attached.

Next, the water-impermeable sheets 1 and 2 with fasteners are temporarily placed on the construction surface at a position where the fasteners can be just locked so as not to overlap. Of course, at this time, the fastener 3 is not locked.

Next, the fastener 3 is locked.

Finally, a room temperature curable unvulcanized butyl rubber tape having a width exceeding 3 parts of the fastener was applied along the connecting line of the 3 parts of the fastener.

After a lapse of 24 hours from the construction, A in FIG.
When a pinhole test of JIS-A6008 was conducted at three locations of B and C, no pinhole was detected at any location.

[0031]

According to the joint method of the water-permeable sheet of the present invention, quick and easy fixed connection can be made by mechanical means, and the outer surface of the mechanical fixed connection portion is sealed with a watertight seal material. In addition, the water-tightness can be secured quickly and completely regardless of the weather and temperature, and is industrially useful.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a method of joining water-impervious sheets of the present invention.

FIG. 2 is an explanatory plan view showing a test position of a connecting portion connected by the joint method of the water-blocking sheet of the present invention.

[Explanation of symbols]

1 Impermeable sheet with fasteners on one side to connect 2 Impermeable sheet with fastener on the other side to connect 3 Huasner 4 Watertight sealing material

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masahiro Suzuki             Hitachi, 1-1 Sukegawa-cho, Hitachi City, Ibaraki Prefecture             Electric Wire Co., Ltd. Inside the electric wire factory (72) Inventor Yoshitsuka Otsuka             Hitachi, 1-1 Sukegawa-cho, Hitachi City, Ibaraki Prefecture             Electric Wire Co., Ltd. Inside the electric wire factory (72) Inventor Yoshitaka Fujii             Hitachi, 1-1 Sukegawa-cho, Hitachi City, Ibaraki Prefecture             Electric Wire Co., Ltd. Inside the electric wire factory

Claims (3)

[Claims] 1. A method of joining water-impervious sheets, which comprises fixing and connecting the end portions of the water-impervious sheets to be connected by mechanical means, and then applying a curable water-tight sealing material on the outer surface of the connecting portions. . 2. The method of fixed connection by mechanical means of the terminal portion is performed via fasteners.
How to join the water-blocking sheet described. 3. The method of joining water-impervious sheets according to claim 1, wherein the curable water-tight sealing material is a room temperature curable unvulcanized butyl rubber tape.