JPH01182438A - Ant preventing under floor structure and its construction method - Google Patents

Abstract

PURPOSE:To prevent an ant preventing drug from its outflow to the outside while surely preventing a white ant from its eating harm by forming an isolating layer, formed by a mixture mixing an antiant drug in a foaming beads or an adhesive agent, in an upper surface of the under floor ground in a region surrounded by a continuous footing. CONSTITUTION:An antiant drug is mixed in either one or both a synthetic resin made foaming beads 31 or an adhesive agent 32, and these many foaming beads 31 are mixed with the adhesive agent 32. Next a mixture is scattered in a surface 2a of the under floor ground in a region, surrounded by a continuous footing 1, so as to fully shield the surface 2a of the under floor ground, and an isolating layer 3 is formed on an upper surface of the under floor ground 2a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a termite-proof underfloor structure that can protect wooden buildings from termite damage, etc., and a construction method thereof.

(Prior art) Conventionally, in order to prevent environmental pollution caused by direct spraying of chemicals onto the ground surface, termite-proofing sheets containing termiticides were spread over the subfloor ground surface surrounded by cloth foundations, and the above-mentioned cloth A termite-proof foundation construction method is known in which a dovetail board containing an anti-termite agent is provided around the outer periphery of the foundation (Japanese Patent Laid-Open No. 59-96
(See Publication No. 351).

[Problem to be solved by the invention]

In the above-mentioned conventional termite-proofing foundation construction method, it is necessary to cut the termite-proofing sheet each time according to the shape of the subfloor ground surface and lay the termite-proofing sheet so that it is in contact with the inner peripheral surface of the cloth foundation. This work requires time and man-hours and has the problem of increasing construction costs.

This invention was made in order to solve these conventional problems, and it is possible to facilitate construction, reliably prevent termite damage, and not pollute the environment. The purpose is to provide a termite-proof subfloor structure and its construction method.

(Means for Solving the Problems) In order to achieve the above object, in this invention, the upper surface of the subfloor ground surface surrounded by the cloth foundation is in contact with the inner circumferential surface of the wall of the cloth foundation, and the underfloor A barrier layer is formed to cover the entire surface of the ground, and this barrier layer is made of a large number of foam beads made of synthetic resin and an adhesive that adheres the foam beads to each other and fills the voids between the foam beads. is,
The anti-termite underfloor structure was constructed such that one or both of the foamed beads and the adhesive contained an anti-termite agent.

In addition, as a construction method for the above-mentioned termite-proof subfloor structure, an anti-termite agent is mixed into one or both of the foamed beads made of synthetic resin and the adhesive, and a large number of these foamed beads and the adhesive are mixed. A barrier layer was formed on the upper surface of the sub-floor ground surface by spraying it on the sub-floor ground surface in the area surrounded by the cloth foundation so that the entire surface of the sub-floor ground surface was shielded.

[Effect]

According to the above configuration, after the mixture is sprayed, the adhesive hardens to form a barrier layer that covers the entire surface of the subfloor, and the foam beads and adhesive that make up this barrier layer form a barrier layer that covers the entire surface of the subfloor. Since termiticides are mixed in one or both of them, termites cannot see through the above-mentioned barrier layer, and furthermore, the above-mentioned termiticides do not leak outside, so there is no possibility of contaminating the environment. do not have.

In addition, the above-mentioned barrier layer can be formed by simply spraying a mixture of foam beads and adhesive onto the subfloor ground surface, so this work can be easily performed without being affected by the shape of the subfloor ground surface. This can contribute to reducing construction costs.

Furthermore, this barrier layer can block moisture from the subfloor ground surface and prevent heating heat from leaking from inside the building.

〔Example〕

In Figures 1 and 2, the floor surrounded by the cloth foundation 1
A barrier layer 3 is formed on the upper surface of the ground surface 2a so as to be in contact with the inner peripheral surface 111 of the wall portion 11 of the cloth foundation 1 and to cover the entire surface of the underfloor ground surface 2a. This barrier layer 3 includes a large number of foamed beads 31 made of synthetic resin, and the foamed beads 3.
The foamed beads 31 and the adhesive 32 are cured by filling the spaces between the foamed beads 31 and the adhesive 32, and either or both of the foamed beads 31 and the adhesive 32 contain an anti-termite agent.

In order to contain the anti-termite agent in the foamed beads 31, the following procedure may be used. That is, the anti-termite agent is dissolved or dispersed in a volatile solvent, the solution containing the anti-termite agent is sprayed onto the surface of the foamed bead base material, and the volatile solvent is removed. By uniformly adhering it to the surface of a foamed bead base material, and mixing the foamed bead base material and a lubricant, the foamed bead base material to which the anticide has been attached is coated with the above lubricant, and then foam molding is performed. .

This makes it possible to form foamed beads with the anti-termite agent uniformly adhered to their surfaces.

The above-mentioned foamed bead base material is a base resin containing a foaming agent, and is a material that is foam-molded by the so-called foamed bead method. The base resin is preferably polystyrene, but is not limited thereto, and polypropylene, polyvinyl chloride, polyurethane, or a copolymer thereof may also be used.

As the blowing agent, aliphatic hydrocarbons such as propane, halogenated hydrocarbons such as methylene chloride, gases such as nitrogen, argon, carbon dioxide, or azodicarbonamide are used alone or in combination.

Examples of anti-9R drugs include organophosphates such as chlorpyrifos, etofenbrox (Mitsui Toatsu brand name,
Vires Ooid insecticides such as (chemical name: 2-(4-ethoxyphenyl)-2-methylpropyl 3-phenoxybenzyl ether) are used, and foamed beads 1
0.02 to 10 heavy lifting part for 00 heavy lifting part, weight is also 0
．． It is used in 2 to 5 cases.

As the volatile solvent, lower hydrocarbon solvents such as petroleum ether are generally used. When spraying a solution in which the above termiticide is dissolved or dispersed in this volatile solvent onto the surface of the foamed bead base material, the termiticide is sprayed onto the surface of the foamed bead base material while stirring the foamed bead base material. can be applied uniformly to the surface of The removal of the volatile solvent after spraying can be done quickly and reliably by heating the foamed bead base material to a temperature below the melting point of the anti-termite agent.

As the lubricant, various waxes, paraffins, higher fatty acids, higher fatty acid metal soaps, higher fatty acid amides, etc. are used, and the amount is 0.02 to 3 parts by weight per 100 parts by weight of the foamed bead base material. But 0.1-1.
They are mixed and stirred at a ratio of 5 parts by weight. This mixing and agitation causes the foamed bead base material to become resistant to damage to its surface! It is coated with a lubricant while the drug is attached.

Foam molding of the foamed bead base material is carried out by first heating it at a temperature of 80 to 120° C. for about 1 to 5 minutes using steam heating or the like, thereby causing primary foaming to an expansion ratio of about 10 to 80 times. The heating temperature at this time is higher than the melting point of the anti-termite agent, but since the foam bead base material is protected by a lubricant, blocking between the foam beads due to melting of the anti-termite agent is reliably prevented. Primary foaming is performed in this state.

Next, after the primary foamed beads are aged, they are heated with steam at a temperature of about 100 to 130° C. in a top mold and molded into a predetermined shape. At this time, the first foamed piece may be further foamed secondarily.

Furthermore, in order to incorporate the termiticide into the adhesive, an anti-termite agent such as the above-mentioned chlorpyrifos may be dispersed in the adhesive.

To form the barrier layer 3, a large number of foamed beads 31 containing an anticide in one or both of them and an adhesive 32 are used.
A mixture of the above-mentioned materials and materials may be prepared, and this mixture may be spread so as to form a layer 1 having a certain thickness over the entire surface of the subfloor ground surface 2a. As the predetermined curing time elapses, the foamed beads 31
The adhesive 32 is applied to the gap between the foam beads 31.
are integrated in a filled state, thereby forming a barrier M3 that isolates between the underfloor ground surface 2a and the underfloor space 2b.

Even if a termite tries to break through the barrier layer 3 from the subfloor ground surface 2a, the termite will destroy the foam beads 31 and the adhesive 3.
They are repelled by the anticide contained in one or both of 2 and 2, and cannot penetrate the barrier layer 3. This allows the upper platform 41 and pillars 4 on the cloth foundation 1 in wooden buildings to
It is possible to prevent feeding damage such as 2.

Furthermore, since the barrier layer 3 is formed from a large number of foam beads 31 and an adhesive filled and hardened between the foam beads 31, it can block moisture from the subfloor ground surface 2a. Furthermore, heating heat inside the building can be prevented from escaping to the underfloor ground surface 2a via the underfloor space 2b.

[Comparative test example]

In order to confirm the effect of the barrier layer 3 of this invention, sample A in which foam beads contained an anti-termiticide, sample B in which an adhesive contained an anti-termiticide, and both foam beads and adhesive were tested. Comparative tests were conducted by preparing three samples including sample C which does not contain an anti-termite agent. Details of the three samples are shown below.

Sample A: 1 impregnated with 1% by weight of chlorpyrifos (termite control agent)
Next, 100 parts of expanded polystyrene beads (expansion ratio: 40 times) were uniformly mixed with 20 parts of Bond GZ3 (trade name of Adhesive Nikonishi Co., Ltd.), and the mixture was formed into a plate shape with a thickness of 20 m and dried. Solidified.

Sample B 20 parts of Bond GZ3 in which 1% by weight of chlorpyrifos was dispersed was uniformly mixed with 100 parts of primary expanded polystyrene beads (expansion ratio: 40 times), and the mixture was formed into a plate shape with a thickness of 20 parts M. It was molded and dried and solidified.

Sample C 20 parts of Bond GZ3 was uniformly mixed with 100 parts of primary expanded polystyrene beads (expansion ratio: 40 times), and the mixture was formed into a plate shape with a thickness of 20 mm and dried and solidified.

In the comparative test, as shown in Fig. 3, bait trees 6 and sand 7 were placed in three containers 5 with a diameter of 80 m+, and 300 worker ants of the Japanese domestic termite were previously reared in these containers. A barrier layer test piece 8 was formed by placing the sample above the ground inside the container so that its peripheral edge was in contact with the inner wall of the container, and a bait tree 6 was placed on the top surface of this barrier layer test piece 8. This test was carried out by leaving this condition for 2 months and examining whether or not the house termites could penetrate upward through the barrier layer test piece 8.

In addition, in order to confirm the sustainability of the effect, an accelerated test was also conducted by exposing the sample to a temperature of 40° C. for 6 months in the same conditions as in the comparative test above.

The results of these tests are shown in Table 1.

According to the above test results in Table 1, in sample C, in which neither the foam beads nor the adhesive contained an anti-termiticide, termites were able to penetrate the shells 1, and even if this was used as an insulating layer on the subfloor surface, it caused feeding damage. cannot play a preventive role. On the other hand, in samples A and B according to the present invention, even after 6 months, the anti-termite underfloor structure of claim 1 of the present invention shows that the ground surface of the floor F is A barrier layer is formed that covers the entire surface, and termite preventive agents are mixed in one or both of the foam beads and adhesive that make up this barrier layer, so termites cannot penetrate the barrier layer. This makes it possible to reliably prevent termite damage, and since the termite control agent does not leak outside, it does not pollute the environment.

Furthermore, according to the method for constructing a termite-proof subfloor structure according to claim 2 of the present invention, the barrier layer can be formed by simply spraying a mixture of foam beads and adhesive onto the subfloor ground surface.
This work can be easily performed without being affected by the shape of the subfloor ground surface, which can contribute to reducing construction costs.

[Brief explanation of the drawing]

FIG. 1 is an explanatory longitudinal cross-sectional view of an embodiment of the present invention, FIG. 2 is an explanatory cross-sectional view taken along the line ■--■ in FIG. 1, and FIG. 3 is an explanatory cross-sectional view of the mushrooms used in the comparative test. DESCRIPTION OF SYMBOLS 1... Cloth foundation, 2a... Subfloor ground surface, 2b... Underfloor space, 3...'aIIfI layer, 11... Wall of fabric foundation, 31... Foamed beads, 32.・Adhesive, 1
11...Inner peripheral surface. Patent applicant: Fukubi Chemical Co., Ltd.
``Patent Attorney'', Etsushi Kotani
Patent Attorney Chief 1) Masayuki Patent Attorney Yasuo Itaya Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. A barrier layer is formed on the upper surface of the subfloor ground surface surrounded by the fabric foundation so as to be in contact with the inner circumferential surface of the wall of the fabric foundation and to cover the entire surface of the subfloor ground surface. This barrier layer is formed by a large number of foamed beads made of synthetic resin and an adhesive that adheres the foamed beads to each other and fills the gaps between the foamed beads. An ant-proof underfloor structure characterized in that one or both of them contain an anti-termite agent. 2. Add an anti-termite agent to either or both of the foamed beads made of synthetic resin and the adhesive, mix a large number of these foamed beads and the adhesive, and apply this mixture to the area surrounded by the fabric foundation. A method for constructing a termite-proof subfloor structure, which comprises forming a barrier layer on the upper surface of the subfloor by spraying the material on the subfloor so that the entire surface of the subfloor is shielded.