JPH0358000B2 - - Google Patents

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD The present invention relates to a sheet material having moisture-proof and insect-proof properties. Conventional technology Conventionally, crepe-processed paper is impregnated with an insect repellent as a support having insect repellent properties (Japanese Patent Laid-Open No. 124911-1983).
(Japanese Utility Model Publication No. 57-43275), insect-proof wrapping paper containing allethrin in paper (Japanese Utility Model Application Publication No. 1983-43275), and insect-proof paper made by extrusion laminating a polyethylene film on one side to provide moisture resistance. Problems to be Solved by the Present Invention In various types of housing, including concrete housing complexes such as apartments and condominiums, sagging, floor coverings, etc. retain moisture, and as a result, sagging, floor coverings, etc., become clogged with dust mites. The occurrence of sanitary pests such as mites, woolly mites, mold, etc. is increasing, and the best way to exterminate these pests is to dry and sterilize them by exposing them to sunlight, but depending on the family structure, Due to the structure of houses, there is less tendency to perform deep cleaning, and the use of organic chlorine agents such as DDT and BHC is currently prohibited or restricted due to their residual toxicity. Therefore, the method of laying insect-proof paper or moisture-proof paper between the floor of the house and the folding floor is widely adopted.
The conventional insect repellent paper described above is not necessarily satisfactory in terms of safety, sustainability of insecticidal effect, and moisture resistance. As a result of intensive research to improve the above-mentioned conventional drawbacks, the present inventors have succeeded in providing a sheet-like material that is moisture-proof and can maintain its insect repellent effect for a long time. Means to solve the problem A moisture-proof coating layer composed of 30 to 75% synthetic rubber latex, 70 to 25% wax emulsion, and a fungicide is laminated on one side of the sheet-like support. and an insect repellent coating layer having the composition of the moisture-proof coating layer and an insect repellent added to the composition of the moisture-proof coating layer is laminated on the other surface of the sheet-shaped support. . Effects The sheet-like support used in the present invention may be any material such as nonwoven fabric, woven fabric, polymer film, foamed sheet, paper, etc., but preferably bleached kraft paper, semi-bleached kraft paper, unbleached kraft paper, etc. Use bleached kraft paper, pure white rolls, or creped versions of these. Further, the sheet-like support may be either air-permeable or non-air-permeable. The matrix of the moisture-proof coating layer is a mixture of wax emulsion and synthetic rubber latex.
It contains a small amount of antifungal agents such as halogenated aromatic compounds. Various kinds of wax-based emulsions can be used, such as paraffin-based wax emulsions and polyethylene-based wax emulsions, and synthetic rubber-based latexes include methyl methacrylate-butadiene-based latexes, styrene-butadiene-based latexes, and acrylonitrile-butadiene. Unmodified types such as latex,
Modified types are particularly preferred because of their film-forming properties and their ease of dispersion in water against mechanical dissociation effects. The moisture-proof coating layer has a thickness of 1 to 20 g/m ² , preferably 5
Apply at ~10g/ ^m2 . In addition, the antifungal agents used for mold include 2(4-thiazole)benzimidazole; N-(tetrachloroethylthio)3,
These are known antifungal agents such as 4,7,8 tetrahydrophthalimide; zinc dithiocarbamate; 2,4,5,6 tetrachloroisophthalonitrile; metaboric acid; and dithio 2,2'bis(benzmethylamide). The amount used is 0.005-5g/m ² , preferably
The amount should be 0.01 to ² g/m2. In addition, as the insect repellent coating layer, a matrix containing a fungicide and an insect repellent can be used, as with the moisture-proof coating layer, but the purpose is to control the dispersion of the insect repellent. A combination of synthetic rubber latex and wax emulsion is used. In this case, the solid content ratio of the synthetic rubber latex and wax emulsion is 30 to 75% for the synthetic rubber latex, 70 to 25% for the wax emulsion, preferably 45% for the synthetic rubber latex.
~65%, wax emulsion 55-35%. In addition, the coating amount of the insect repellent coating layer is 1.0 to 3.0 g/
m ² , preferably 1.5 to 10 g/m ² . The insect repellents used in the present invention include synthetic pyrethroid compounds, synthetic pyrethrin compounds, phosphate compounds belonging to organophosphorus insecticides, phosphorothiolate compounds, phosphorothioate compounds, phosphorodithioate compounds, and phosphonate compounds. compounds, phosphoroamidate compounds,
Fluorophosphate compounds, organochlorine insecticides, carbamate insecticides, dinitrophenol compounds as acaricides, chlorophenyl compounds, phosphate ester compounds, etc., and particularly preferred are synthetic pyrethroid compounds such as permethrin. , arethrin or phosphorothioate compounds, such as fenitrothion (0,0-dimethyl-0-3-methyl-4-nitrophenyl phosphorothioate), with a coating amount of 0.1 to 10.0 g/
m ² , preferably 1.0 to 5.0 g/m ² . Incidentally, the moisture-proof coating layer and the insect repellent coating layer can be easily coated on the sheet-like support using an air knife, Meyer bar, or other conventional method. The present invention has the above-mentioned configuration, and by placing this sheet-like material in a storage box for the purpose of moisture-proofing and insect-proofing, or by laying it between the floor of a house and a folding floor, It is possible to maintain the moisture-proof properties of clothing boxes or folding floors, and the mold-proofing agent in the moisture-proof coating layer and the insect repellent coating layer can prevent the growth of mold caused by slight moisture. At the same time, the insect repellent in the insect repellent coating layer can prevent the occurrence of mites. Moreover, in the present invention, since the insect repellent is blended into the rubber latex etc., rapid aeration can be prevented and the insect repellent effect can be exerted for a long period of time. Incidentally, the present invention has the effect that by appropriately selecting the insect repellent, the effect can be maintained for a long period of time as an anti-termite paper, an insect repellent band, an anti-mold paper, etc. Example The drawing shows an example of the present invention, and the sheet-like article 1 of the present invention has a sheet-like support 2
A moisture-proof coating layer 3 is laminated on one side of the sheet-like support 2, and an insect repellent coating layer 4 is laminated on the other side of the sheet-like support 2. That is, in the sheet-like article 1 of the present invention, the moisture-proof coating layer 3 and the insect repellent coating layer 4 are formed on both sides of the sheet-like support 2. The layer 4 exhibits sufficient moisture resistance, and since each of the above contains a fungicide, it is possible to prevent the growth of mold. This can prevent the occurrence of mites, etc. Example 1 Ryokara kraft paper (basis weight 87 g/m ² , thickness 95 μm)
Synthetic rubber latex (manufactured by Mitsui Toatsu Co., Ltd., trade name Polylux 717) is applied as a moisture-proof coating layer on one side of the
A solid mixture of wax-based emulsion (manufactured by Daiichi Kigenso Co., Ltd., trade name Zircopeil CA) and a mold inhibitor (trade name Densilp, manufactured by ICI Co., Ltd.) at a solid content ratio of 50:50:0.5, respectively. Coat at a rate of 10g/m ² per minute and dry. Next, take four sheets of laminated moisture-proof coating layers, and on the other side of two of them, synthetic rubber latex, wax emulsion, fungicide and insect repellent (fenitrothion) are applied at a solid content ratio of 60. :40：
0.5:100 was coated and dried at a solid content of 3 g/m ² (referred to as sample A), and the above solid content ratio was 50:50:0.5:100 as a solid content of 3
g/ ^m2 coated and dried (referred to as sample B)
I got it. As a comparative example, one side of double-sided kraft paper was coated with 3 g/ ^m2 of fenitrothion as a solid content (referred to as sample C), and one side was coated with synthetic rubber latex or wax emulsion as in Sample A or B. , moldproofing agent solids ratio: 100:
15 as a solid content of a mixture at a ratio of 100:1
Laminate a moisture-proof coating layer coated with g/ ^m2 , and coat the other side with 1.5g/ ^m2 of fenitrothion as a solid content.
A dried sample (referred to as sample D) was prepared, samples A to D were stored in a costume box for 2 to 12 months, and then the change over time in the residual rate of fenitrothion in the sample was quantified using a gas chromatograph.
It was as shown in Table 1.

[Table] As is clear from Table 1, in the present invention (samples A and B), the residual rate of fenitrothion was
It is recognized that this is significantly improved compared to and D. Example 2 The coating amount of fenitrothion was 0.1, 0.5, 1.0 and
Five samples were prepared in the same manner as Sample A in Example 1 except that the setting was 2.0 g/ ^m2 , and the insecticidal effect of each sample was tested when stored in a costume box for 12 months. The second place
It was as shown in the table.

【table】

[Table] (Note) The above test was evaluated according to the Tokyo Metropolitan Institute of Health method.
As is clear from Table 2, when the coating amount of fenitrothion is 1.0 g/m ² or more, 35% or more of the insecticide can be reliably retained even after 12 months using the transpiration method. Example 3 The amount of antifungal agent applied in Sample A of Example 1 was
0, 0.1g/m ² , 0.5g/m ² , 1.0g/m ² , 2.0 respectively
A 5 cm square sample of ⁵ types of g/m2 was placed on starch in a 10 cm diameter shear dish that had been left in a room at 25°C for 7 days, and the bottom of each sample when left in that state for 10 days. When observing the mold growth on the exposed starch surface without a sample,
It was as shown in Table 3.

[Table] As is clear from Table 3, no mold growth was observed on the starch under the sample when the fungicide was used at 0.5 g/m ² or more. Example 4 Samples A and B in Example 1 and sheet-like supports used in Samples A and B were double-sided kraft paper and polyester film (thickness 25 μm).
Comparison of water vapor permeability and air permeability of M) and kraft paper with polyethylene film (thickness 15 μm) extrusion laminated on one side.
As shown in the table.

According to [Table].
As is clear from Table 4, it is recognized that the present invention has better moisture permeability than any of the comparative examples, and maintains an appropriate air permeability.

[Brief explanation of drawings]

The drawing is a sectional view of one embodiment of the present invention. 1: sheet-like material, 2: sheet-like support, 3: moisture-proof coating layer, 4: insect repellent coating layer.

Claims (1)

[Claims] 1. 30-75% synthetic rubber latex and 70-25% wax emulsion on one side of the sheet-like support.
A moisture-proof coating layer composed of a mold-proofing agent and a mold-proofing agent is laminated thereon, and on the other side of the sheet-like support, an insect-proofing coating layer is formed by adding an insect repellent to the composition of the moisture-proofing coating layer. A sheet-like material having moisture-proof and insect-proof properties, characterized by having a laminated layer.