WO2016143810A1 - Feuille antimite - Google Patents

Feuille antimite Download PDF

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Publication number
WO2016143810A1
WO2016143810A1 PCT/JP2016/057318 JP2016057318W WO2016143810A1 WO 2016143810 A1 WO2016143810 A1 WO 2016143810A1 JP 2016057318 W JP2016057318 W JP 2016057318W WO 2016143810 A1 WO2016143810 A1 WO 2016143810A1
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WO
WIPO (PCT)
Prior art keywords
insect repellent
sheet
insect
layer
thermoplastic resin
Prior art date
Application number
PCT/JP2016/057318
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English (en)
Japanese (ja)
Inventor
陽介 雨宮
信一 本島
中山　鶴雄
Original Assignee
株式会社Ｎｂｃメッシュテック
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Application filed by 株式会社Ｎｂｃメッシュテック filed Critical 株式会社Ｎｂｃメッシュテック
Priority to JP2017505369A priority Critical patent/JP6705805B2/ja
Publication of WO2016143810A1 publication Critical patent/WO2016143810A1/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
    • A01M29/12—Scaring or repelling devices, e.g. bird-scaring apparatus using odoriferous substances, e.g. aromas, pheromones or chemical agents
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A01N25/10—Macromolecular compounds
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives

Definitions

  • the present invention relates to an insect repellent sheet having a repellent effect (insect repellent effect) against pests and the like.
  • an insect repellent sheet having repellent property against insects and the like is desired.
  • Patent Document 1 a film in which an insecticidal compound is kneaded with a synthetic resin (Patent Document 1) and a laminate (Patent Document 2) in which a pest repellent layer is provided on one surface of a sheet-like base material layer have been proposed. ing.
  • Patent Document 1 a single layer film (Patent Document 1) in which an insecticidal compound (insect repellent) is just kneaded, or a laminated film (Patent Document 2) provided with a pest repellent layer (insect repellent) provided on the surface exposed to the outside air )
  • Patent Document 2 a laminated film (Patent Document 2) provided with a pest repellent layer (insect repellent) provided on the surface exposed to the outside air )
  • the volatilization amount of the insect repellent increases, the amount of the insect repellent present on the outer surface of the film increases, so that dust tends to adhere to the insect repellent and the repellent effect against insects tends to decrease.
  • the insect repellent flows out, and in this case, there is a problem that the repellent effect against insects is not sustained.
  • the present invention has been made to solve the above-described problems, and an object thereof is to provide an insect repellent sheet that is superior in practicality.
  • the gist of the present invention is as follows.
  • An insect repellent sheet capable of releasing an insect repellent An insect repellent layer containing the insect repellent and made of a thermoplastic resin;
  • Two protective layers made of a thermoplastic resin that are in contact with the outer surface of the insect repellent layer and sandwich the insect repellent layer;
  • the insect repellent sheet wherein the crystallinity of the thermoplastic resin constituting the protective layer is equal to or less than the crystallinity of the thermoplastic resin constituting the insect repellent layer.
  • a main component of the insect repellent is a pyrethroid insect repellent.
  • a content of the insect repellent with respect to the insect repellent sheet is 0.1% by mass or more and 5% by mass or less.
  • an insect repellent sheet that exhibits an insect repellent effect while suppressing the intake of an insect repellent by a person or the like and can easily maintain the insect repellent effect.
  • This embodiment relates to an insect repellent sheet 1 from which an insect repellent can be released, and the insect repellent sheet 1 has an insect repellent layer 2 and two protective layers 3 as shown in FIG.
  • the insect repellent layer 2 has a base material made of a thermoplastic resin and an insect repellent 4.
  • the insect repellent 4 is held by the base material of the insect repellent layer 2 while being dispersed inside the base material of the insect repellent layer 2.
  • the two protective layers 3 are made of a thermoplastic resin and are in contact with the outer surface of the insect repellent layer 2 to sandwich the insect repellent layer 2.
  • the insect repellent 4 moves from the insect repellent layer 2 to the protective layer 3, and is then released from the outer surface of the protective layer 3 (the outer surface of the insect repellent sheet 1) to the outside of the insect repellent sheet 1.
  • the crystallinity of the thermoplastic resin constituting the protective layer 3 of the insect-proof sheet 1 is equal to or less than the crystallinity of the thermoplastic resin constituting the base material of the insect-proof layer 2 of the
  • the base material of the insect repellent layer 2 and the thermoplastic resin constituting the protective layer 3 can maintain the shape of the insect repellent layer 2 and the protective layer 3, and the insect repellent 4 is placed outside the insect repellent sheet 1. There is no particular limitation as long as it can be released, and it can be appropriately selected. Further, the base material of the insect repellent layer 2 and the thermoplastic resin constituting the protective layer 3 may be the same or different.
  • thermoplastic resins include polyester, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polybutylene terephthalate, polytetramethylene terephthalate, nylon, acrylic, polyvinylidene fluoride, polyethylene tetrafluoride ethylene, polytetrafluoroethylene, and polyvinyl alcohol.
  • Polycarbonate Kevlar (registered trademark), polyacrylic acid, polymethyl methacrylate, rayon, cupra, Tencel (registered trademark), polynosic, acetate, triacetate.
  • thermoplastic resins as the thermoplastic resin constituting the base material of the insect repellent layer 2 and the protective layer 3, a crystalline thermoplastic resin is used from the viewpoint of ensuring the strength of the insect repellent layer 2 and the protective layer 3. It is done. Specific examples include polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, nylon, and polyvinylidene fluoride. Among these, polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, and the like are more preferable as the thermoplastic resin for easily forming the insect-proof sheet 1. Furthermore, when transparency is required for the insect-proof sheet 1, it is preferable to use a crystalline thermoplastic resin having excellent transparency, such as polypropylene and polyethylene terephthalate.
  • the crystallinity of the thermoplastic resin constituting the protective layer 3 is set to be equal to or lower than the crystallinity of the thermoplastic resin constituting the base material of the insect-proof layer 2.
  • the degree of crystallinity of the thermoplastic resin can be adjusted by adjusting the temperature of the material of the thermoplastic resin and the temperature of the cast roll used when the insect-proof sheet 1 is molded to a predetermined temperature. If the relationship between the crystallinity, the thermoplastic resin material and the cast roll temperature is determined in advance, the crystallinity of the thermoplastic resin constituting the protective layer 3 is determined as the thermoplastic resin constituting the base material of the insect repellent layer 2. The degree of crystallinity can be reduced to or below.
  • the insect repellent 4 When the crystallinity of the thermoplastic resin constituting the protective layer 3 is equal to or less than the crystallinity of the thermoplastic resin constituting the base material of the insect repellent layer 2, the insect repellent 4 mainly in the amorphous part of the protective layer 3 The insect repellent 4 can be released to the outside of the insect repellent sheet 1. Thereby, the insect-proof effect can be exhibited.
  • the crystallinity of the thermoplastic resin constituting the protective layer 3 is larger than the crystallinity of the thermoplastic resin constituting the base material of the insect repellent layer 2, the insect repellent 4 is difficult to move through the protective layer 3. Since it becomes difficult to be released to the outside of the insect repellent sheet 1, the insect repellent effect tends to be lowered.
  • the crystallinity of the thermoplastic resin constituting the base material of the insect repellent layer 2 is preferably 40% or more and 100% or less.
  • the degree of crystallinity of the thermoplastic resin constituting the protective layer 3 may be less than or equal to the degree of crystallinity of the thermoplastic resin constituting the base material of the insect repellent layer 2, specifically 40% or more and 100% or less.
  • the crystallinity (40% or more, 100% or less) of the thermoplastic resin constituting the base material of the insect repellent layer 2 is preferably set to be equal to or less.
  • the crystallinity degree of the thermoplastic resin which comprises the base material of the insect repellent layer 2 and the protective layer 3 can be measured by the powder X-ray diffraction method, for example.
  • the crystallinity of the thermoplastic resin constituting the base material of the insect repellent layer 2 is such that the heat constituting the base material of the single insect repellent layer 2 (sheet) formed under the same conditions as the conditions for forming the insect repellent layer 2 is used. It can be regarded as the same as the crystallinity of the plastic resin.
  • the insect repellent 4 held in the insect repellent layer 2 is not particularly limited as long as the insect repellent layer 4 remains in the insect repellent layer 2 when the insect repellent sheet 1 is melt-kneaded and molded, and can be appropriately selected by those skilled in the art.
  • the microencapsulated insect repellent 4 can be used, or the insect repellent 4 can be supported on a porous material.
  • microencapsulated insect repellent 4 is obtained by filling the microcapsule with the insect repellent 4 as a liquid compound.
  • insect repellent sheet 1 is melt-kneaded and molded using a crystalline thermoplastic resin, the insect repellent 4 moves to the amorphous part of the thermoplastic resin, and the insect repellent 4 that does not remain in the amorphous part is repelled by the insect repellent. Bleed out to the outer surface of the sheet 1 and evaporated to the outside of the insect-proof sheet 1.
  • tackiness occurs and it becomes difficult to mold, or more than the necessary amount of the insect repellent 4 is required at the time of melt kneading.
  • the insect repellent 4 as a liquid compound is retained in the microcapsule during melt kneading, and the insect repellent 4 can be prevented from migrating to the amorphous part of the thermoplastic resin. Therefore, the insect repellent 4 can hardly bleed out to the outer surface of the insect repellent sheet 1. Thereby, while being able to make it hard to generate
  • the insect repellent 4 of this embodiment is preferably contained in the insect repellent sheet 1 as a liquid compound.
  • the insecticide 4 that is a liquid compound it becomes possible to add the insecticide 4 to the insect-repellent layer 2 in a stable state, and to easily adjust the diffusion rate of the insect-repellent 4 inside the insect-repellent sheet 1.
  • the main component of the insect repellent 4 is not particularly limited, but is preferably in a liquid form at room temperature.
  • pyrethroids such as pyrethrin, cinerine, jasmolin, allethrin, resmethrin, fenvalerate and permethrin, cyclic diene insecticides such as toxaphene and benzoepin, organophosphorus insecticides such as malathion and fenitrothion, carbaryl, Carbamate insect repellents such as mesomil and promecarb can be mentioned.
  • These insect repellents can be used alone or in combination of two or more.
  • pyrethroid insect repellents that have excellent repellency and rapid action and are less likely to show acute toxicity can be suitably used.
  • permethrin and etofenprox are preferred because they tend to exhibit an insect repellent effect at a low concentration and easily secure safety for humans and animals.
  • the insect repellent 4 contained in the insect repellent layer 2 passes through the protective layer 3 and is released to the outside of the insect repellent sheet 1. 3, the release of the insect repellent 4 can be adjusted. This makes it easier to prevent the insect repellent 4 from diffusing to the outside of the insect repellent sheet 1 as compared with the configuration in which the insect repellent 4 is contained in the protective layer 3, thus ensuring safety for humans and animals. It is possible to extend the duration of the insect repellent effect.
  • the insect repellent sheet in which the insect repellent layer 2 including the insect repellent 4 is arranged on the outer surface or the single layer insect repellent sheet including the insect repellent 4 tackiness is generated on the outer surface of the insect repellent sheet, and the insect repellent sheet is welded, for example Processability at the time of processing becomes worse (hard to process).
  • the insect repellent sheet 1 according to the present embodiment since the insect repellent layer 2 contains the insect repellent 4 and the insect repellent 4 passes through the protective layer 3, the insect repellent 4 bleeds out on the outer surface of the insect repellent sheet 1. It can suppress and can make it hard to generate
  • insect repellent sheet is washed (for example, washed with water) to remove dust adhering to the insect repellent sheet, the insect repellent is removed together with the dust etc., and the release of the insect repellent from the insect repellent sheet is promoted, and the insect repellent effect Will be shortened.
  • the present embodiment since the bleed-out of the insect repellent 4 on the outer surface of the insect repellent sheet 1 can be suppressed, it is easy to suppress the adhesion of dust or the like to the outer surface of the insect repellent sheet 1, It is possible to suppress the release of the insect repellent 4 due to dust or the like. Moreover, since the frequency
  • the insect repellent sheet 1 of the present embodiment in which permethrin is used as the insect repellent 4 when the amount of the insect repellent 4 (permethrin) exposed on the outer surface of the insect repellent sheet 1 is measured using an acetone cleaning method, the insect repellent The amount of 4 (permethrin) can be 0.4 ⁇ g or more and 10 ⁇ g or less per 1 g of the insect-proof sheet.
  • the acetone cleaning method is a method of cleaning the outer surface of the insect-repellent sheet 1 with absorbent cotton moistened with an organic solvent such as acetone, extracting an organic solvent such as acetone from the cleaned absorbent cotton, and the insect repellent 4 in the organic solvent. Is to measure the amount of.
  • the amount of the insect repellent 4 described above is a value obtained by calculating the amount of the insect repellent 4 per 1 g of the insect repellent sheet from the measurement result of the acetone cleaning method.
  • the amount of the insect repellent 4 (permethrin) is less than 0.4 ⁇ g per 1 g of the insect repellent sheet, it becomes difficult to exert the insect repellent effect.
  • the amount of the insect repellent 4 (permethrin) exceeds 10 ⁇ g per 1 g of the insect repellent sheet, the amount of intake when the person or animal touches the insect repellent sheet 1 and ingests the insect repellent 4 released from the insect repellent sheet 1 May exceed health tolerance limits.
  • the WHO and FAO United Nations Food and Agriculture Organization
  • 0.05 mg / day / kg is set as an acceptable intake amount (ADI: Acceptable Daily Intake).
  • This value is, for example, 0.75 mg when converted to 15 kg (weight of about 3 years old) per day, and it is said that permethrin is not harmful to health even if this amount is continuously consumed.
  • the amount (maximum value) of the insect repellent 4 is 0.75 mg.
  • it depends on the thickness of the insect repellent sheet 1 it is rare for a person or the like to touch the area of the insect repellent sheet 1 corresponding to 75 g in one day, even if a product manufactured from the insect repellent sheet 1 is used. , Can prevent harm to human health.
  • the cross-sectional shape of the insect repellent sheet 1 is not particularly limited as long as the protective layer 3 covers the outer surface of the insect repellent layer 2.
  • the outer edge of the insect repellent layer 2 is exposed, but the outer edge of the insect repellent layer 2 can be covered with the protective layer 3.
  • the thickness of the insect repellent layer 2 is preferably uniform throughout the insect repellent layer 2.
  • the thickness of the protective layer 3 is preferably uniform throughout the protective layer 3.
  • the thickness of the protective layer 3 is preferably 1 ⁇ m or more and 100 ⁇ m or less.
  • the insect repellent 4 becomes difficult to pass through the protective layer 3 compared to the case where the thickness of the protective layer 3 is 100 ⁇ m or less, and the insect repellent effect of the insect repellent sheet 1 is exhibited. It becomes difficult to let you.
  • the thickness of the protective layer 3 is less than 1 ⁇ m, compared to the case where the thickness of the protective layer 3 is 1 ⁇ m or more, the insect repellent 4 can easily pass through the protective layer 3 and the insect repellent effect is sustained. It becomes difficult.
  • seat 1, the thickness of the insect-proof layer 2, and the thickness of the protective layer 3 can be measured using micro soup (microscope), for example.
  • the method for manufacturing the insect-proof sheet 1 according to the present embodiment can be appropriately selected by those skilled in the art, and is not particularly limited.
  • an insect repellent 4 is filled in a thermoplastic resin constituting the base material of the insect repellent layer 2 of the insect repellent sheet 1, and the insect repellent layer 2 and the protective layer 3 are used.
  • thermoplastic resin pellets are melted by an extruder for the protective layer.
  • the melt melted in the insecticidal layer extruder and the melt melted in the protective layer extruder are passed through a multilayer T-die to form a film.
  • the insect-proof sheet 1 of this embodiment can be manufactured by sending out the obtained film
  • the crystallinity degree of the thermoplastic resin which comprises the protective layer 3 is adjusted to the heat
  • the laminated body can be heated and stretched.
  • the insect repellent layer 4 is formed by filling the thermoplastic resin with the liquid insect repellent 4, the insect repellent 4 can be dispersed in the insect repellent layer 2 without variation.
  • the insect repellent 4 may be unevenly distributed in the inside.
  • the insect repellent 4 can be filled only in the upper half of the cross section of the insect repellent layer 2.
  • the insect repellent 4 can be unevenly distributed on one surface of the insect repellent sheet 1.
  • the outer surface of the insect repellent sheet 1 on the side where the insect repellent 4 is not unevenly distributed is arranged on the crop side, and the outside of the insect repellent sheet 1 on the side where the insect repellent 4 is unevenly distributed
  • the surface can be placed on the opposite side of the crop. Thereby, the insect repellent 4 is released to the side opposite to the crop side, and the insects can be prevented from approaching the insect repellent sheet 1. Moreover, since it becomes difficult to release the insect repellent 4 to a crop, it can suppress that the insect repellent 4 adheres to a crop.
  • the content of the insect repellent 4 in the insect repellent sheet 1 is preferably 0.1% by mass or more and 10% by mass or less with respect to the insect repellent sheet 1.
  • the content of the insect repellent 4 is lower than 0.1% by mass, the insect repellent effect is lowered and the duration of the insect repellent effect is shortened as compared with the case where the content of the insect repellent 4 is 0.1% by mass or more.
  • the content of the insect repellent 4 exceeds 10% by mass, the base material of the insect repellent layer 2 and the protective layer 3 serving as the skeleton of the insect repellent sheet 1 is compared with the case where the content of the insect repellent 4 is 10% by mass or less.
  • the mass% of the insecticidal sheet 1 decreases, and the strength of the insect-proof sheet 1 decreases. Furthermore, tackiness occurs, workability is poor, and sheet creation becomes difficult. Moreover, although it depends on the thickness of the protective layer 3, as the content of the insect repellent 4 increases, the amount of the insect repellent 4 exposed on the outer surface of the insect repellent sheet 1 increases, and the intake of the insect repellent 4 by humans and animals is increased. Will increase.
  • the content of the insect repellent 4 in the insect repellent sheet 1 is more preferably 0.1% by mass or more and 5% by mass or less. When the content of the insect repellent is 0.1% by mass or more and 5% by mass or less, tackiness is less likely to occur and processing defects of the insect repellent sheet 1 are less likely to occur.
  • the insect repellent sheet 1 of the present embodiment may include a component for imparting an arbitrary function as a functional material.
  • the functional materials include titanium dioxide as a matting agent, calcium stearate as a lubricant, fine particles such as silica and alumina, hindered phenol derivatives as antioxidants, and colorants such as pigments, stabilizers and dispersions.
  • additive materials such as agents, there are functional materials such as ultraviolet shielding agents, near infrared shielding agents, antibacterial agents, antifungal agents, antistatic agents, flame retardants, weathering agents, and various catalysts.
  • the functional material is present in the insect repellent layer 2 in a dispersed manner together with the insect repellent 4, is dispersed in the protective layer 3, or adheres to the outer surface of the insect repellent sheet 1. Just do it.
  • the insect repellent sheet 1 of the present embodiment may be composed of four or more layers by using a component for imparting an arbitrary function as a functional material, different from the insect repellent layer 2 and the protective layer 3.
  • Other layers include matting agent layer, lubricant layer, antioxidant layer, colored layer, UV shielding agent layer, near infrared shielding agent layer, antibacterial agent layer, antifungal agent layer, antistatic agent layer, flame retardant layer And a weathering agent layer, a pressure-sensitive adhesive layer for applying the insect-proof sheet 1 to an application object, and a reinforcing layer for improving the strength of the sheet.
  • fine irregularities may be formed by chemically bonding inorganic fine particles to the outer surface of the insect-proof sheet 1 according to the present embodiment.
  • fine irregularities dust and the like floating in the air are less likely to adhere to the outer surface of the insect-proof sheet 1. Even when dust or the like adheres to the outer surface of the insect-proof sheet 1, only dust can be easily removed with water or the like without removing the insect-repellent agent 4 exposed on the outer surface of the insect-proof sheet 1. For this reason, it can be set as the insect-proof sheet 1 excellent in dustproof property.
  • the insect repellent sheet 1 according to the present embodiment obtained as described above can release the minimum necessary insect repellent 4 capable of exhibiting the insect repellent effect and easily ensure the duration of the insect repellent effect. Become.
  • the insect repellent sheet 1 of the present embodiment can be used for various applications such as shutter sheets for food factories, vinyl houses, clean rooms, walls of existing buildings, and window glass.
  • Example 1 Master batch pellets made of permethrin (insect repellent) and highly crystalline homopolypropylene resin were prepared. Pellets made of highly crystalline homopolypropylene resin were prepared. The melted master patch pellets and highly crystalline homopolypropylene resin were mixed to obtain a mixture containing permethrin at a predetermined content. The pellet was melted to obtain a melt. By extruding these melts and mixtures from a coextrusion T-die molding apparatus, an insect repellent layer made of a highly crystalline homopolypropylene resin containing permethrin was sandwiched between two protective layers made of a highly crystalline homopolypropylene resin. A layered insect repellent sheet was obtained.
  • the thickness of the insect repellent layer was 144 ⁇ m, and the thicknesses of the two protective layers were both 28 ⁇ m. Moreover, content of permethrin with respect to the obtained insect-proof sheet
  • Example 2 Instead of the master batch pellet used in Example 1, a master batch pellet made of etofenprox (insect repellent) and a highly crystalline homopolypropylene resin was used. The other conditions were the same as in Example 1.
  • the insect-repellent layer made of a highly crystalline homopolypropylene resin containing etofenprox was sandwiched between two protective layers made of a highly crystalline homopolypropylene resin.
  • a layered insect repellent sheet was obtained. In the obtained insect repellent sheet, the thickness of the insect repellent layer was 144 ⁇ m, and the thicknesses of the two protective layers were both 28 ⁇ m. Moreover, content of etofenprox with respect to the obtained insect-proof sheet
  • This insect repellent sheet was used as the insect repellent sheet of Example 2.
  • Example 3 Instead of the pellet made of the high crystalline homopolypropylene resin used in Example 1, pellets made of the low crystalline random polypropylene resin were used. The other conditions were the same as in Example 1, and a three-layer structure in which an insect repellent layer made of a highly crystalline homopolypropylene resin containing permethrin was sandwiched between two protective layers made of a low crystalline random polypropylene resin An insect repellent sheet was obtained. In the obtained insect repellent sheet, the thickness of the insect repellent layer was 144 ⁇ m, and the thickness of the two protective layers was 28 ⁇ m. Moreover, content of permethrin with respect to the obtained insect-proof sheet
  • Example 4 A mixture having a different permethrin content from the mixture used in Example 1 was used.
  • the thickness of the insect-proof layer in Example 1 was 190 ⁇ m, and the thicknesses of the two protective layers were both 5 ⁇ m.
  • a three-layer structure in which an insect repellent layer made of a highly crystalline homopolypropylene resin containing permethrin was sandwiched between two protective layers made of a highly crystalline homopolypropylene resin was the same as in Example 1.
  • An insect repellent sheet was obtained.
  • the content of permethrin in the obtained insect repellent sheet was 1% by mass. This insect repellent sheet was used as the insect repellent sheet of Example 4.
  • Example 5 A mixture having a different permethrin content from the mixture used in Example 1 was used.
  • the thickness of the insect-proof layer in Example 1 was 60 ⁇ m, and the thicknesses of the two protective layers were both 70 ⁇ m.
  • a three-layer structure in which an insect repellent layer made of a highly crystalline homopolypropylene resin containing permethrin was sandwiched between two protective layers made of a highly crystalline homopolypropylene resin was the same as in Example 1.
  • An insect repellent sheet was obtained.
  • the content of permethrin in the obtained insect repellent sheet was 1% by mass. This insect repellent sheet was used as the insect repellent sheet of Example 5.
  • Example 6 A mixture having a different permethrin content from the mixture used in Example 1 was used.
  • the thickness of the insect-proof layer in Example 1 was 40 ⁇ m, and the thickness of the two protective layers was 80 ⁇ m.
  • a three-layer structure in which an insect repellent layer made of a highly crystalline homopolypropylene resin containing permethrin was sandwiched between two protective layers made of a highly crystalline homopolypropylene resin was the same as in Example 1.
  • An insect repellent sheet was obtained.
  • the content of permethrin in the obtained insect repellent sheet was 1% by mass. This insect repellent sheet was used as the insect repellent sheet of Example 6.
  • Example 7 A mixture having a different permethrin content from the mixture used in Example 1 was used. The other conditions were the same as in Example 1, and a three-layer structure in which an insect repellent layer composed of a highly crystalline homopolypropylene resin containing permethrin was sandwiched between two protective layers composed of a highly crystalline homopolypropylene resin. An insect repellent sheet was obtained. In the obtained insect repellent sheet, the thickness of the insect repellent layer was 144 ⁇ m, and the thicknesses of the two protective layers were both 28 ⁇ m. Moreover, content of permethrin with respect to the obtained insect-proof sheet
  • Example 8 A mixture having a different permethrin content from the mixture used in Example 1 was used. The other conditions were the same as in Example 1.
  • the insect-proof layer made of a highly crystalline homopolypropylene resin containing 0.1% permethrin was sandwiched between two protective layers made of a highly crystalline homopolypropylene resin.
  • a three-layer insect-proof sheet was obtained.
  • the thickness of the insect repellent layer was 144 ⁇ m, and the thicknesses of the two protective layers were both 28 ⁇ m.
  • seat was 0.1 mass%. This insect repellent sheet was used as the insect repellent sheet of Example 8.
  • Example 9 A mixture having a different permethrin content from the mixture used in Example 1 was used. The other conditions were the same as in Example 1, and a three-layer structure in which an insect repellent layer composed of a highly crystalline homopolypropylene resin containing permethrin was sandwiched between two protective layers composed of a highly crystalline homopolypropylene resin. An insect repellent sheet was obtained. In the obtained insect repellent sheet, the thickness of the insect repellent layer was 144 ⁇ m, and the thicknesses of the two protective layers were both 28 ⁇ m. Moreover, content of permethrin with respect to the obtained insect-proof sheet
  • Example 10 A mixture having a different permethrin content from the mixture used in Example 1 was used. The other conditions were the same as in Example 1, and a three-layer structure in which an insect repellent layer composed of a highly crystalline homopolypropylene resin containing permethrin was sandwiched between two protective layers composed of a highly crystalline homopolypropylene resin. An insect repellent sheet was obtained. In the obtained insect repellent sheet, the thickness of the insect repellent layer was 144 ⁇ m, and the thicknesses of the two protective layers were both 28 ⁇ m. Moreover, content of permethrin with respect to the obtained insect-proof sheet
  • Example 1 The master batch pellet used in Example 1 and the pellet made of the highly crystalline homopolypropylene resin were melted and mixed to obtain a mixture containing permethrin at a predetermined content. This mixture was extruded from a co-extrusion T-die molding apparatus to obtain an insecticidal sheet having a single layer structure made of a highly crystalline homopolypropylene resin containing permethrin. The obtained insect-proof sheet had a thickness of 200 ⁇ m. Moreover, content of permethrin with respect to the obtained insect-proof sheet
  • Example 2 The master batch pellets used in Example 2 and the pellets made of highly crystalline homopolypropylene resin were melted and mixed to obtain a mixture containing etofenprox at a predetermined content. This mixture was extruded from a coextrusion T-die molding apparatus to obtain an insecticidal sheet having a single layer structure made of a highly crystalline homopolypropylene resin containing etofenprox. The obtained insect-proof sheet had a thickness of 200 ⁇ m. Moreover, content of etofenprox with respect to the obtained insect-proof sheet
  • Comparative Example 3 A highly crystalline homopolypropylene resin was melted to obtain a melt. The melt was extruded from a coextrusion T-die molding apparatus to obtain a film having a single layer structure made of a highly crystalline homopolypropylene resin. The thickness of the obtained film was 200 ⁇ m. This film was used as the insect repellent sheet of Comparative Example 3.
  • the thickness of the insect repellent layer was 144 ⁇ m, and the thicknesses of the two protective layers were both 28 ⁇ m. Moreover, content of permethrin with respect to the obtained insect-proof sheet
  • Example 5 A mixture having a different permethrin content from the mixture used in Example 1 was used.
  • the material used for the insect repellent layer and the material used for the protective layer were interchanged. The conditions other than these are the same as those in Example 1, and a three-layer insect repellent in which a central layer made of a highly crystalline homopolypropylene resin is sandwiched between two outer layers made of a highly crystalline homopolypropylene resin containing permethrin.
  • a sheet was obtained.
  • the thickness of the central layer was 144 ⁇ m, and the thicknesses of the two outer layers were both 28 ⁇ m.
  • seat was 1 mass%.
  • This insect repellent sheet was used as the insect repellent sheet of Comparative Example 5.
  • the degree of crystallinity of the polypropylene resin constituting the base material of the protective layer (outer layer) for Comparative Examples 1 to 3, the base material of the insect repellent sheet is constituted.
  • the crystallinity of the polypropylene resin) was measured by a powder X-ray diffraction method.
  • the crystallinity of the polypropylene resin constituting the base material of the insect repellent layer (center layer) is such that a single insect repellent layer (sheet) is formed under the same conditions as those for forming the insect repellent layer.
  • the crystallinity of the polypropylene resin constituting the base material was determined by measuring by a powder X-ray diffraction method. The results are shown in Table 1.
  • One side surface (the surface of the protective layer on one side) of the insect repellent sheets of Examples 1 to 10 and Comparative Examples 1 to 5 was respectively wiped with absorbent cotton moistened with acetone, and acetone was extracted from the absorbent cotton.
  • the amount of the insect repellent contained in the extracted acetone was measured using a gas chromatograph mass spectrometer (GC-MS). From the measured amount of insect repellent, the amount of insect repellent (ng / cm 2 ) exposed on the surface per 1 cm 2 of insect repellent sheet was calculated.
  • the permissible daily intake for an infant weighing 15 kg calculated based on ADI is 0.75 mg when the insect repellent is permethrin, and 0.45 mg when the insect repellent is etofenprox. .
  • Safety was evaluated according to the following evaluation criteria. If the evaluation is “A”, it is judged to have excellent safety. If the evaluation is “B”, it is judged to have safety. If the evaluation is “C”, safety is given. I decided not to. The results are shown in Table 2 described later. [Evaluation criteria] A: The area when the intake allowance is more than 0.5 m 2 . B: The area when it becomes the intake allowance is 0.1 m 2 or more and 0.5 m 2 or less. C: The area when the intake allowance is less than 0.1 m 2 .
  • the surface of a fluorescent light downlight cover (round shape, diameter 17 cm) installed outdoors was covered with the insect-proof sheets of Examples 1 to 10 and Comparative Examples 1 to 5, respectively.
  • the light was turned on for 10 minutes, and after 10 minutes, the number of flying insects that had stopped on the cover covered with each insect repellent sheet was measured. All the flying insects that remained on the cover were chironomids.
  • the insect repellent sheets of Examples 1 to 10 and Comparative Examples 1 to 5 were cut into 10 cm ⁇ 10 cm, and the mixed dust was evenly placed on the upper surface (protective layer) of each cut insect repellent sheet.
  • Each insect repellent sheet carrying the mixed dust was lifted and turned over, and a predetermined number of vibrations were applied to drop unadhered mixed dust not adhering to the insect repellent sheet.
  • the weight of each insect repellent sheet before putting mixed dust and the weight of each insect repellent sheet after dropping unadhered mixed dust were measured, and the weight of the mixed dust adhering to each insect repellent sheet was calculated.
  • As the mixed dust 15 kinds of test powder 1 defined in JIS Z 8901 were used.
  • the dust adhesion suppression effect was evaluated according to the following evaluation criteria. In addition, when evaluation was "Good", it judged that it had a dust adhesion inhibitory effect. The results are shown in Table 2 described later. [Evaluation criteria] Good: The average weight of the mixed dust adhered to the insect-proof sheet is 60 mg or less. Poor: The average weight of the mixed dust adhering to the insect-proof sheet exceeds 60 mg.
  • the insect repellent sheets of Examples 1 to 10 have an evaluation result of “A” or “B” in evaluation 1 (safety evaluation) and evaluation 2 (repellency evaluation), and evaluation 3 (dust dust)
  • evaluation 1 safety evaluation
  • evaluation 2 repellent evaluation
  • evaluation 3 dust dust
  • the evaluation result of the “adhesion suppression effect” was “Good”. From this result, it can be understood that the insect-proof sheet of the present embodiment has safety, repellency, and dust adhesion suppression effects. More specifically, by controlling the insect repellent sheet of this embodiment to the above-described configuration, the amount of the insect repellent exposed on the surface of the insect repellent sheet is controlled to the minimum necessary amount that can exert the insect repellent effect. It is understood that safety can be ensured and adhesion of dust can be suppressed.
  • the insect repellent sheet of this embodiment can maintain the insect repellent effect and is difficult to produce tackiness (adhesiveness). I understand that it is easy.
  • the insect-proof sheets of Comparative Examples 1 to 5 were evaluated as “Poor” or “C” in at least one of the evaluations 1 to 3. From this result, it can be understood that the insect repellent sheets of Comparative Examples 1 to 5 do not have at least one of safety, repellency, and dust adhesion suppressing effect.
  • the insect-proof sheets of Comparative Examples 1 to 2 and 5 have an evaluation result of Evaluation 1 of “C”. From this result, it can be understood that the insect repellent is easily exposed on the surface of the insect repellent sheet in the case of the insect repellent sheet having a single layer structure or the insect repellent sheet having a three layer structure containing the insect repellent in the outer layer.
  • the insect-proof sheets of Comparative Examples 1-2 and 5 had an evaluation result of Evaluation 3 of “Poor”. As one of the causes that resulted in this, the insect repellent sheet with a single layer structure or the insect repellent sheet with a three layer structure containing an insect repellent in the outer layer, the repellent is easily exposed on the surface of the insect repellent sheet, It is thought that dust is likely to adhere.
  • the insect repellent sheet of Comparative Example 4 has an evaluation result of “C” in evaluation 2, and as shown in the result of evaluation 1, the area when the allowable intake is reached is greater than that of the insect repellent sheets of Examples 1 to 10. It was also wide. From this result, in the insect repellent sheet, the crystallization degree of the thermoplastic resin constituting the protective layer is larger than the crystallization degree of the thermoplastic resin constituting the insect repellent layer, it is difficult for the insect repellent to move through the protective layer. It can be understood that it is difficult to release the insect repellent.
  • the insect repellent sheet of Comparative Example 3 has the smallest amount of adhering mixed dust in Evaluation 3, which is considered to be caused by the fact that the insect repellent sheet does not contain an insect repellent.
  • insect repellent sheets of Examples 1 to 9 having an insect repellent content of 0.1% by mass or more with respect to the insect repellent sheet have an insect repellent content of less than 0.1% by mass (0.01% by mass).
  • insect repellent sheet of Example 10 the repelling rate was improved by 11% or more. From this result, the insect repellent sheet having an insect repellent content of 0.1% by mass or more is more likely to exert the insect repellent effect as compared with the insect repellent sheet having an insect repellent content of less than 0.1% by mass. Can understand.
  • insect repellent sheet 2 insect repellent layer 3: protective layer 4: insect repellent

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  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Environmental Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Zoology (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Plant Pathology (AREA)
  • Agronomy & Crop Science (AREA)
  • Birds (AREA)
  • Insects & Arthropods (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Catching Or Destruction (AREA)
  • Laminated Bodies (AREA)

Abstract

Selon l'invention, un effet antimite est développé, tout en restreignant la quantité d'agent antimite ingéré par les personnes, ou similaire, et cet effet antimite est facilement maintenu. Une feuille antimite (1) permettant la libération d'un agent antimite possède : une couche antimite (2) qui comprend l'agent antimite, et qui est constituée d'une résine thermoplastique ; et deux couches protectrices (3) qui enserrent la couche antimite en venant en contact avec ses faces externes, et qui sont aussi constituées d'une résine thermoplastique. Le degré de cristallisation de la résine thermoplastique configurant la couche protectrice, est inférieur ou égal au degré de cristallisation de la résine thermoplastique configurant ladite couche antimite.
PCT/JP2016/057318 2015-03-09 2016-03-09 Feuille antimite WO2016143810A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019172623A (ja) * 2018-03-29 2019-10-10 平岡織染株式会社 防虫効果持続性に優れたシート
JP2020109070A (ja) * 2018-12-28 2020-07-16 広島化成株式会社 間仕切り用シート
CN116369300A (zh) * 2022-12-19 2023-07-04 佛山欧神诺陶瓷有限公司 一种可长效缓释的防蟑轻质陶瓷板及其制备方法
US11825837B2 (en) 2019-06-04 2023-11-28 S. C. Johnson & Son, Inc. Dispenser and method of use thereof

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JP2005515766A (ja) * 2002-01-31 2005-06-02 ベステルガールド フランドセン アクティーゼルスカブ 積層殺虫剤ディスペンサー
JP2011529926A (ja) * 2008-08-06 2011-12-15 ベステルガールド フランドセン ソシエテ アノニム Ｈｄｐｅおよびｌｄｐｅを含む殺虫剤ポリマーマトリックス

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JP2005515766A (ja) * 2002-01-31 2005-06-02 ベステルガールド フランドセン アクティーゼルスカブ 積層殺虫剤ディスペンサー
JP2011529926A (ja) * 2008-08-06 2011-12-15 ベステルガールド フランドセン ソシエテ アノニム Ｈｄｐｅおよびｌｄｐｅを含む殺虫剤ポリマーマトリックス

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019172623A (ja) * 2018-03-29 2019-10-10 平岡織染株式会社 防虫効果持続性に優れたシート
JP2020109070A (ja) * 2018-12-28 2020-07-16 広島化成株式会社 間仕切り用シート
JP7282369B2 (ja) 2018-12-28 2023-05-29 広島化成株式会社 害虫忌避性間仕切り用シート
US11825837B2 (en) 2019-06-04 2023-11-28 S. C. Johnson & Son, Inc. Dispenser and method of use thereof
CN116369300A (zh) * 2022-12-19 2023-07-04 佛山欧神诺陶瓷有限公司 一种可长效缓释的防蟑轻质陶瓷板及其制备方法

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