JP2003169588A - Termite-controlling sheet and architectural base structure using the sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a termite-controlling sheet for wooden construction and an architectural base structure for the wooden construction. <P>SOLUTION: This termite-controlling sheet is provided by mutually laminating vinyl acetate sheet impregnated with a biocidal ingredient with a nonwoven fabric having a 4-layered lamination structure comprising tow species of uniaxially drawn threads having different sizes. This base structure for the wooden construction is produced by laying the sheet and hammering concrete on the sheet. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a termite control sheet for wooden construction and a wooden construction basic structure using this sheet.

[0002]

2. Description of the Related Art Houses made of reinforced concrete have excellent strength and are very effective in countering typhoons. However, buildings made of reinforced concrete are hot in the summer because the solar energy stored in the daytime is dissipated indoors at night.
There is a difficulty in terms of coolness. Therefore, the desire to live in a wooden house is high. However, wooden houses have termite problems. In other words, the damage of termites is great in the tropical and subtropical regions, and even in Japan, from the Okinawa region to the Tohoku region,
Recently, even in Hokkaido, damage has been recognized. Termite damage to wooden houses is said to be twice the amount of fire damage. As described above, the damage caused by termites is extremely large in a wooden house, and therefore soil treatment and wood treatment with termite control agents were essential.

The first of the conventional termite control techniques is a chemical control method using an anticide, the second is a biological control method, and the third is a physical control method. The present invention is a technique relating to a physical control method in which this chemical control method is added.

Conventionally, various physical control methods have been proposed as measures against termites. For example, when a sheet that cannot be broken through by termites is impregnated with a control chemical, and when the foundation work of the wooden construction is completed, this sheet is laid on the entire surface of the foundation base,
There is one in which the periphery of this sheet and the cloth foundation are sealed with an anti-termite agent (Japanese Patent Laid-Open No. 63-70743). In addition, after the foundation is constructed, a sheet impregnated with a termite controlling agent is spread over the foundation ground, and a dovetail board containing the termite controlling agent is provided around the foundation (JP-A-59-9635).
No. 1), a column with an anti-termite storage layer under the floor (JP-A-7-127150), or a net made of metal such as stainless steel laid on the entire surface of the foundation (JP-A-10-107150).
No. 174548).

[0005]

However, in the conventional physical control methods as described above, after the basic construction of the house is completed, a termite control company cuts the sheet into a predetermined area and cuts it. We lay it down and stick around it,
This work is extremely complicated and time-consuming, and there is a problem that the finished state is not averaged in terms of termite control effect, that is, lacks stability. In addition, a sheet made by impregnating conventional vinyl acetate with a biocide is laid on the chestnut ground work and hooked with reinforcing bars when placing concrete, or it is strong for concrete and split ground work. If it was pinched by pressure, there was a hole that could allow termites to enter.

Therefore, a first object of the present invention is to provide a termite control sheet for wooden construction which is environmentally friendly, highly safe and effective. The second purpose is to make a strong foundation using this sheet, improve soft ground to prevent uneven settlement, and to provide a wooden building foundation structure that can prevent termite invasion for a long period of time. is there.

[0007]

The first feature of the termite control sheet for wooden construction according to the present invention is that it has a laminated structure of at least a nonwoven fabric and a vinyl acetate sheet containing a biocidal component. .

A second feature of this sheet is that the non-woven fabric in the termite control sheet for wood construction of the above-mentioned first feature has a four-layer structure in which two types of polypropylene uniaxially drawn yarns having different thicknesses are used. It is processed as one of the materials. The non-woven fabric has good adhesiveness to the concrete, and when the non-woven fabric surface is faced up, the non-woven fabric adheres to the concrete and is wrapped with the non-woven fabric having high tensile strength from the bottom of the foundation to the rising, so that the bending resistance of the concrete increases. This can reduce the cracking of the foundation due to uneven settlement and enhance the termite control effect of the solid foundation.

Since the elongation of the termite control sheet for wooden construction according to the present invention is 35% to 24%, the termite control sheet can maintain the termite control effect without breaking even if the foundation is cracked.

The characteristic feature of the wooden building foundation structure according to the present invention is that the termite control sheet having the above-mentioned characteristic is laid directly on the excavated foundation ground of the building, or on the ground which has been split. The foundation is being constructed on this sheet.

This wooden building includes a wooden structure which is a simple reinforced concrete structure, and at least a building which may be damaged by termites is a building having a wooden structure as a whole and is a subject of protection of the present invention.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to FIG. 1, the construction of a termite control sheet 1 for wooden construction according to the present invention will be described. In this termite control sheet, a nonwoven fabric 11 and a biocide-impregnated vinyl acetate sheet 12 are directly attached. It is the one that is worn and laminated, but preferably, it is preferably processed into a three-layer laminated structure as shown in FIG. That is, a polypropylene non-woven fabric 13 is further adhered onto a biocide-impregnated vinyl acetate sheet.

The non-woven fabric 11 is processed by using a spun bond of polypropylene uniaxially drawn yarn as a material, and this non-woven fabric preferably has a four-layer structure composed of two kinds of yarns having different thicknesses. For example, “Typer SF49” (trade name) manufactured by DuPont can be used.

The biocide impregnated in the vinyl acetate sheet is not particularly limited, and examples thereof include permethrin, cypermethrin, bifenthrin, cifenotrin, silafluofene, etofenprox, fenvalerate, pralethrin, tralomethrin, deltamethrin, allethrin, pyrethrin and the like. Pyrethroid compounds, fenitrothion, chlorpyrifos, organophosphorus agents such as diazinon, carbamate agents such as Fenobucarb, imidacloprid, neonicotinoid compounds such as acetamiprid,
It can be selected from other insecticides, insect growth regulators, termite repellents, and microbicides effective against termite intestinal microorganisms, but pyrethroid compounds are particularly preferable from the viewpoint of efficacy and safety.

Next, the present invention will be described in more detail with reference to production examples and examples, but the present invention is not limited thereto.

[0016]

[Production Example 1] Production of termite control sheet 1 of the present invention A vinyl acetate sheet containing 0.5% of bifenthrin was used as a type (Typer) SF49 (manufactured by DuPont).
And a thin polypropylene sheet on a vinyl acetate sheet, and the termite control sheet 1 of the present invention has a three-layer laminated structure.
Got

[0017]

Example 1 Termite-preventing effect of the termite control sheet 1 of the present invention A glass cylinder having a diameter of 3 cm and a height of 1 cm is placed in the center of a plastic cup having a diameter of 9 cm and a depth of 4 cm laid with damp sand, and the inside of the cylinder is moistened. Filled with sand. 5c on it
The termite control sheet produced in Production Example 1 cut into a size of m × 5 cm was placed, and a glass cylinder of the same size was placed thereon. Two hundred termite worker ants and 20 soldier ants were released in a plastic cup. As a result of investigating after 3 weeks, no penetration was observed. The experiment was repeated twice.

[0018]

[Example 2] Usage of termite control sheet of the present invention A wooden building basic structure using the termite control sheet 1 of the present invention will be described with reference to Fig. 2. If the foundation ground 2 for constructing a wooden building has a predetermined area and a hole 21 of a predetermined depth is excavated, and if the foundation ground cannot support the load of the building as it is, the split ground operation 3 is performed on the ground. The termite control sheet 1 of the present invention is directly laid on the upper surface and the side surface of the split chestnut industry 3. In this case, the sheet 1 is composed of a plurality of sheets, and the peripheries of the sheets are overlapped with each other by 10 to 30 cm. Then, a dovetail paste paste is applied and adhered to the mutual contact surfaces around the overlapping sheets, that is, the sticking surface. It is preferable to mix the above-mentioned biocide with this ant-preventive paste paste in order to enhance the ant-proof effect.

As shown in FIG. 2, the periphery of the termite control sheet 1 laid on the entire surface is ground level (G) of the ground 2 as shown in FIG.
Make sure to stand up from L). Although the non-woven fabric 11 is located on the bottom surface in FIG.
It is preferable that the work is carried out with the above as the upper surface.

Then, the foundation is constructed. When constructing a solid foundation as illustrated in FIG. 2, the reinforcing bar 51 is arranged on the upper surface of the termite control sheet 1 of the present invention, and then the form is provided and the concrete is struck. Set up and build a solid foundation 5. A foundation 6 is installed on the solid foundation 5, and a pillar 7 is erected on the foundation. The water supply and distribution pipes may be provided so as to penetrate the solid foundation 5 protruding above the GL. If the water supply and distribution pipes are erected from the bottom surface of the pest control sheet 1, a cut will be made in this sheet, and the risk of termites entering from this cut will increase, and if the groundwater level is high, this pipe will be transmitted. Groundwater may blow up to the surface of the foundation ground. In addition, due to deterioration over time, if the water supply and drainage pipes constructed under the foundation ground deteriorate and are destroyed,
The entire foundation ground must be destroyed and repaired.
Therefore, when the water supply and drainage pipes are raised from the lower surface of the pest control sheet to be constructed, ant-proof sand is put around the cuts in the sheet or ant-proof putty is applied to reinforce the barrier.

Although Example 2 is an example of a solid foundation, the termite control sheet of the present invention can be applied to a fabric foundation.

INDUSTRIAL APPLICABILITY The termite controlling sheet for wooden construction according to the present invention is highly safe for humans and animals, does not cause environmental pollution, and is effective for controlling termites. Furthermore, a strong foundation made of a wooden building foundation structure can be made, soft ground can be improved to prevent uneven settlement, and termites can be controlled for a long time.

Continued front page    (72) Inventor Takashi Mio             1049-10 Ogose-cho, Iruma-gun, Saitama Prefecture (72) Inventor Masachika Hirano             2-152-1 Komatsu, Higashiyodogawa-ku, Osaka City Shin             To Fine Co., Ltd. F term (reference) 2B121 AA16 BB28 BB31 CC02 EA05                       FA08 FA12 FA15                 2E001 DH14 EA08 FA21 FA22 GA24                       GA28 HD11 LA06 LA16                 4F100 AK07 AK22B BA02 BA07                       CA30B DG15A EJ82B GB07                       GB90 JC00B

Claims (3)

[Claims] 1. A termite control sheet for a wooden structure, comprising a non-woven fabric having a four-layer laminated structure composed of two kinds of uniaxially drawn yarns having different thicknesses, and a vinyl acetate sheet impregnated with a biocidal component, which is bonded to the nonwoven fabric. 2. The termite control sheet for wooden structures according to claim 1, wherein the biocidal component is pyrethroid. 3. The sheet according to claim 1 or 2 is laid on a foundation ground excavated from a building or after performing a splitting ground operation with a non-woven fabric on top, and concrete is placed thereon. A wooden building basic structure characterized by being present.