Flying insect pest repelling product and flying insect pest repelling method

Abstract

Provided is a flying insect pest repelling product capable of simultaneously enhancing the repelling effect and wearability, which are effects contradictory to each other.　A flying insect pest repelling product 100 comprises a molded body 10 containing a flying insect pest repelling component and a silicone rubber serving as a base material. The molded body 10 is a belt-like body or an annular body having a plurality of first elements E1 and a plurality of second elements E2. The first elements E1 and the second elements E2 are alternately arranged along the longitudinal direction axis R of the belt-like body or the annular body.

Description

Flying pest repellent product and flying pest repellent method

[0001] The present invention relates to a flying pest repellent product comprising a molded article containing a silicone rubber base material and a flying pest repellent component, and to a flying pest repellent method using the same.

[0002] Conventionally, as a product for repelling flying pests such as mosquitoes, moths, midges, and flies, flying pest repellent products have been proposed that comprise a silicone rubber molded body and a liquid composition containing a flying pest repellent component such as essential oil (see, for example, Patent Documents 1 and 2). These flying pest repellent products utilize the properties of silicone rubber, which are excellent in adsorption and gas permeability, as well as being physically stable, and are processed into rings, wristbands, etc., and worn on the wrist, etc. of the human body.

[0003] International Publication No. 2013 / 187463 Japanese Patent Application Laid-Open No. 2018-095697

[0004] In the flying pest repellent products of Patent Documents 1 and 2, in order to enhance the repellent effect, it is necessary to increase the amount of flying pest repellent component contained in the silicone rubber molded body, which requires increasing the mass of the silicone rubber molded body, i.e., increasing the thickness (cross-sectional area) of the silicone rubber molded body. However, as the silicone rubber molded body becomes thicker, its elasticity decreases, and there is a risk that it may become difficult to fit the product around the wrist, for example, making it difficult to fit a fist through it, and thus reducing wearability.

[0005] On the other hand, if the silicone rubber molding is made thinner in order to make it easier to wear, the amount of flying insect repellent component contained in the silicone rubber molding may decrease, as mentioned above, and the repellent effect may be reduced.

[0006] In this way, in flying pest repellent products in which a flying pest repellent component is incorporated into a silicone rubber molding, there is a trade-off between repellent effect and wearability, and it is difficult to simultaneously enhance these two opposing effects.

[0007] The present invention has been made in consideration of the above circumstances, and aims to provide a flying pest repellent product that can simultaneously enhance the mutually contradictory effects of repellency and wearability, and a flying pest repellent method using the same.

[0008] The inventors conducted extensive research to solve the above-mentioned problems and discovered the following. Specifically, in a flying pest repellent product, a silicone rubber molding is molded into a band-like or ring-shaped body to be worn on the wrist or other part of the body. For silicone rubber moldings with the same components and properties, the amount of flying pest repellent component that can be incorporated into the silicone rubber molding (i.e., the amount of flying pest repellent component that can be retained between silicone rubber molecules) (the amount that can be incorporated) depends on the mass of the silicone rubber molding. Therefore, to enhance the repellent effect, simply increase the mass of the silicone rubber molding. Furthermore, since the amount that can be incorporated is determined by the components and properties of the silicone rubber molding and the type of flying pest repellent component, increasing the mass of the silicone rubber molding for any combination of the components and properties of the silicone rubber molding and the type of flying pest repellent component allows as much flying pest repellent component as possible to be incorporated into the silicone rubber molding, depending on the amount that can be incorporated for that combination.

[0009] Here, for example, as in Patent Document 1, when a silicone rubber molding is molded to have a constant wire diameter (thickness) throughout the entire longitudinal axis of a strip or ring-shaped body, increasing the mass of the silicone rubber molding requires making the silicone rubber molding uniformly thick, which may result in reduced stretchability and wearability. Conversely, making the silicone rubber uniformly thin increases stretchability and improves wearability, but reduces the mass of the silicone rubber molding, which may reduce the repellent effect. On the other hand, for example, when forming only a portion of the longitudinal axis to be locally thick, it is necessary to increase the mass of that portion to increase the mass of the entire silicone rubber molding, so it is necessary to make the portion significantly thicker than other portions or expand the area occupied by the thick portion in the longitudinal axis direction, which may result in reduced stretchability of the silicone rubber molding as a whole.

[0010] In response to this, the present inventors discovered that by adopting the following configuration, it is possible to enhance both the repellent effect and the wearability, which are mutually contradictory effects, and thus completed the present invention.

[0011] In other words, the characteristic configuration of the flying pest repellent product of the present invention for solving the above-mentioned problems is that it is a flying pest repellent product consisting of a molded body containing a silicone rubber base material and a flying pest repellent component, wherein the molded body is a strip-shaped or ring-shaped body having a plurality of first elements E1 and a plurality of second elements E2 (the first elements E1 and the second elements E2 have different configurations), and the first elements E1 and the second elements E2 are arranged alternately along the longitudinal axis of the strip-shaped or ring-shaped body.

[0012] In a silicone rubber molded body, when first elements E1 and second elements E2 having different configurations, such as different thicknesses or different inclinations relative to the longitudinal axis (different shapes), are arranged alternately along the longitudinal axis, adjacent first elements E1 and second elements E2 have different configurations and can perform different functions depending on their configurations. In a flying pest repellent product of this configuration, if adjacent first elements E1 and second elements E2 are considered as a single unit, the unit performs two different functions attributable to each element. By arranging the units consecutively along the longitudinal axis, the first elements E1 and second elements E2 can be arranged alternately, and the flying pest repellent product as a whole performs two functions. One of the first element E1 and the second element E2 can function primarily as a volatilization section that volatilizes the flying pest repellent component held in the gaps in the molecular structure of the silicone rubber in the silicone rubber molded body, while the other can function primarily as an extension section that extends the size of the silicone rubber molded body along the longitudinal axis. Therefore, by arranging the first element E1 and the second element E2 alternately along the longitudinal axis, it is possible to simultaneously enhance the mutually contradictory effects of repellency and wearability.

[0013] In the flying pest repellent product of the present invention, it is preferable that the cross-sectional area S1 of the first element E1 in a direction perpendicular to the longitudinal axis is larger than the cross-sectional area S2 of the second element E2 in a direction perpendicular to the longitudinal axis.

[0014] In this flying pest repellent product, the cross-sectional area S1 of the first element E1 is set larger than the cross-sectional area S2 of the second element E2, so that by simply changing the shape, the relatively thick first element E1 can function as the volatilization portion described above, and the relatively thin second element E2 can function as the extension portion described above. Therefore, with a simpler configuration, it is possible to reliably enhance the mutually opposing effects of repellency and ease of wear at the same time.

[0015] In the flying pest repellent product of the present invention, it is preferable that at least one of the first element E1 and the second element E2 is configured to intersect obliquely with the longitudinal axis in a side view.

[0016] In this flying pest repellent product, at least one of the first element E1 and the second element E2 is configured to intersect obliquely with respect to the longitudinal axis, so that the boundary between the first element E1 and the second element E2 also intersects obliquely. This reduces stress concentration at the boundary when the flying pest repellent product is pulled along the longitudinal axis when worn on the wrist or the like, thereby preventing breakage of the flying pest repellent product. Furthermore, when wearing a flying pest repellent product on the wrist or the like, the flying pest repellent product is usually pulled obliquely along the wrist or the like, which makes it easier to roll around the longitudinal axis, making it easier to wear.

[0017] In the flying pest repellent product of the present invention, it is preferable that when the molded body is worn on a person's wrist or arm, the drag stress measured when the molded body is grasped and moved sideways while being pulled toward the person is 7.5 N / 5 mm or less per unit width (5 mm).

[0018] According to the flying pest repellent product of this configuration, by setting the drag stress within the above range, the flying pest repellent product can move (slide, roll, etc.) easily on the surface to which it is attached with a relatively small force, making it easy to attach.

[0019] In the flying pest repellent product of the present invention, it is preferable that the first element E1 mainly functions as a volatilization section that volatilizes the flying pest repellent component held in the gaps in the molecular structure of the silicone rubber, and the second element E2 mainly functions as an extension section that extends the longitudinal size of the molded body.

[0020] According to the flying pest repellent product of this configuration, by dividing the functions between the first element E1 and the second element E2, it is possible to more reliably simultaneously enhance the mutually contradictory effects of repellency and ease of wear.

[0021] Another characteristic feature of the flying pest repellent method of the present invention for solving the above problem is that it is a flying pest repellent method using the above flying pest repellent product, in which the flying pest repellent product is worn on the human body, causing the flying pest repellent component to volatilize around the human body, thereby repelling flying pests.

[0022] As described above, the flying pest repellent product has enhanced repellent effect and wearability, which are mutually opposing effects, at the same time, so there are few reasons to prevent wearing it, such as difficulty in wearing it or inability to obtain repellent effect. Furthermore, after wearing it, it can exhibit a higher repellent effect than conventional products. Therefore, according to the flying pest repellent method of this configuration, the high wearability and repellent effect of the flying pest repellent product can enhance the repellent effect compared to when using conventional flying pest repellent products.

[0023] Fig. 1 is a schematic perspective view showing a flying pest repellent product according to one embodiment of the present invention. Fig. 2 is a schematic perspective view showing an enlarged cut-out portion (corresponding to three units) of the flying pest repellent product of Fig. 1. Fig. 3 is a schematic diagram showing a method for measuring the drag stress of flying pest repellent products of Examples and Reference Examples. Fig. 4 is a schematic plan view showing a flying pest repellent product according to another embodiment of the present invention. Fig. 5 is a schematic plan view showing a flying pest repellent product according to another embodiment of the present invention. Fig. 6 is a schematic plan view showing a flying pest repellent product according to another embodiment of the present invention. Fig. 7 is a schematic plan view showing a flying pest repellent product according to a Reference Example.

[0024] The flying pest repellent product and flying pest repellent method of the present invention will be described below. However, the present invention is not intended to be limited to the configurations described in the embodiments described below.

[0025] [Flying Pest Repellent Product] Fig. 1 is a schematic perspective view showing a flying pest repellent product according to one embodiment of the present invention. Fig. 2 is a schematic perspective view showing an enlarged cut-out portion (corresponding to three units) of the flying pest repellent product of Fig. 1. The flying pest repellent product 100 of this embodiment is composed of a molded body 10 having a silicone rubber base material. The silicone rubber contains a flying pest repellent component. In addition to the flying pest repellent component, the molded body 10 may contain other components as described below.

[0026] (Silicone Rubber) The silicone rubber used as the base material of the molded body 10 (flying pest repellent product 100) has excellent gas permeability, is physically stable, and has the properties of being excellent at absorbing and releasing flying pest repellent components. This is thought to be because the molecular structure of the flying pest repellent component has a main chain composed of carbon, and the molecules of the flying pest repellent component can easily enter gaps in the molecular structure of the three-dimensionally cross-linked silicone rubber.

[0027] To maximize the properties of silicone rubber, the hardness (Shore A hardness, HA) of the silicone rubber molded body is preferably set to 20 to 50 degrees, and more preferably 30 to 40 degrees. The hardness of the silicone rubber molded body can be adjusted by increasing or decreasing the amount of crosslinking agent (vulcanizing agent or additive) compounded with the silicone rubber raw materials or by changing the curing temperature (crosslinking temperature). If the hardness of the silicone rubber molded body is below the above range, the elasticity may be weak and the return (rebound) of the silicone rubber molded body may be reduced. On the other hand, if the hardness of the silicone rubber molded body exceeds the above range, the durability may be reduced. In contrast, by setting the hardness of the silicone rubber molded body within the above range, it will have appropriate elongation and sufficient durability. The hardness of the silicone rubber molded body is measured using a method or device in accordance with Japanese Industrial Standards (JIS K6253). In this embodiment, the hardness of the silicone rubber molded body is measured as Shore A hardness (HA) using a durometer (Type A) conforming to the above standard.

[0028] Silicone rubber can be used regardless of type, such as room temperature curing, heat curing, condensation type, or addition type. It is usually prepared by mixing a vulcanizing agent, a reaction aid, an additive, etc., with a silicone compound or liquid silicone polymer as the raw material, and then heating and pressurizing it to vulcanize (crosslink) it and mold it. Specifically, for example, after adding a vulcanizing agent, etc., the silicone compound is poured into two molded halves to mold it into a shape such as that shown in FIG. 1, and the molded halves are joined together and then demolded to obtain a silicone molded product as an integrally molded body. The amount of volatilization of the flying insect repellent component added later can be controlled by adjusting the crosslink density of the silicone rubber or the amount of silicone oil or filler used as an additive.

[0029] The silicone rubber used in this embodiment may contain other types of rubber. For example, a rubber containing fluorine-based rubber in addition to silicone rubber is expected to improve durability.

[0030] The silicone rubber molded product is configured as a ring-shaped body with an expandable ring portion into which a human wrist or the like is inserted or worn, or as a band-shaped body that is formed into a ring-shaped body by connecting both ends. When molded product 10, which includes a silicone rubber molded product and a flying pest repellent component held in said silicone rubber molded product, is worn on the wrist or the like, the flying pest repellent component gradually volatilizes from the surface of molded product 10. For example, in the case of a flying pest repellent product 100 whose volatilization state lasts for 5 to 15 hours, in order to maintain such volatilization performance, the average volatilization amount of the flying pest repellent component per total surface area of ​​molded product 10 is 0.05 to 1.0 mg / cm. ２ By setting the average volatilization amount of the flying pest repellent component within the above range, the bleeding of the flying pest repellent component within the molded product 10 proceeds stably and smoothly for 5 to 15 hours, preferably 8 to 12 hours, while suppressing stickiness. ２ If the amount is less than 1.0 mg / cm, the flying pest repellent effect will be insufficient, and the average volatilization amount of the flying pest repellent component will be 1.0 mg / cm. ２ If the average evaporation amount exceeds 0.02 mg / cm, the duration of the repellent effect may be shortened, and the amount of the flying pest repellent component or the flying pest repellent composition containing the same retained in the molded product may become too large, which may cause stickiness on the surface. ２ The average value is calculated for the time period showing a volatilization amount of 100 h or more. Note that the shape of the silicone rubber molded body is the same as the shape of the flying pest repellent product 100 (molded body 10), and will be described later as the shape of the flying pest repellent product 100.

[0031] (Flying Pest Repellent Component) The flying pest repellent component used in the flying pest repellent product 100 does not substantially contain an insecticidal component, but instead uses a fragrance component as the flying pest repellent component. The flying pest repellent component preferably contains the following components (a) and (b):

[0032] As the component (a), a compound represented by the general formula (I); CH ３-COO-R1 (I) [R1: alcohol residue having 6 to 12 carbon atoms]. Component (b) includes a monoterpene alcohol and / or an aromatic alcohol having 10 carbon atoms.

[0033] The flying insect repellent component (a) contains, in addition to or instead of the acetate ester compound, a compound represented by the general formula (II): R2-CH ２ -COO-CH ２ -CH=CH ２ ... (II) [R2: an alkyl group, alkoxy group, cycloalkyl group, cycloalkoxy group, or phenoxy group having 4 to 7 carbon atoms] may be included as a single substance or a mixture of allyl ester compounds. That is, component (a) may be an acetate compound and / or an allyl ester compound.

[0034] The flying insect repellent component will be specifically described below.

[0035] Among the flying pest repellent components, specific examples of the acetate ester compound represented by general formula (I), which is component (a), include p-tert-butylcyclohexyl acetate, o-tert-butylcyclohexyl acetate, p-tert-pentylcyclohexyl acetate, tricyclodecenyl acetate, benzyl acetate, phenylethyl acetate, styrallyl acetate, anisyl acetate, menthyl acetate, cinnamyl acetate, terpinyl acetate, dihydroterpinyl acetate, linalyl acetate, ethyl linalyl acetate, citronellyl acetate, geranyl acetate, neryl acetate, bornyl acetate, and isobornyl acetate. These acetate ester compounds can be used alone or as a mixture of two or more.

[0036] Among the flying pest repellent components, specific examples of the allyl ester compound represented by general formula (II), which is component (a), include allyl hexanoate, allyl heptanoate, allyl octanoate, allyl isobutyloxyacetate, allyl n-amyloxyacetate, allyl cyclohexyl acetate, allyl cyclohexylpropionate, allyl cyclohexyloxyacetate, and allyl phenoxyacetate. These allyl ester compounds can be used alone or as a mixture of two or more. These allyl ester compounds can also be used in place of the acetate ester compounds described above, or in any combination with the acetate ester compounds.

[0037] Among the flying pest repellent components, specific examples of the monoterpene alcohols and / or aromatic alcohols having 10 carbon atoms, which are component (b), include terpineol, terpinen-4-ol, geraniol, dihydromyrcenol, borneol, menthol, citronellol, nerol, linalool, ethyl linalool, thymol, eugenol, and p-menthane-3,8-diol. These monoterpene alcohols and / or aromatic alcohols having 10 carbon atoms can be used alone or as a mixture of two or more.

[0038] It is preferable to use the flying pest repellent components (a) and (b) in combination in the flying pest repellent product 100. In this case, when the mass blending ratio of component (a) to component (b) is set to 0.1 to 2.0 times, particularly excellent flying pest repellent results can be obtained.

[0039] The flying pest repellent product 100 may also contain other flying pest repellent components, such as compounds such as α-pinene, β-pinene, carvone, pulegone, camphor, and damascone, monoterpene aldehydes such as citral, citronellal, neral, and perillaldehyde, other ester compounds such as benzyl benzoate, cinnamyl formate, and geranyl formate, phenylethyl alcohol, diphenyl oxide, vanillin, jasmine lactone, and indole aroma. Furthermore, various essential oils containing the flying pest repellent components, such as jasmine oil, neroli oil, peppermint oil, bergamot oil, orange oil, geranium oil, petitgrain oil, lemon oil, citronella oil, lemongrass oil, cinnamon oil, eucalyptus oil, lemon eucalyptus oil, thyme oil, and alpinia zerum oil, may also be added. In this embodiment, even if a flying pest repellent component is blended as an essential oil, if the flying pest repellent component is contained in the essential oil at 2.0 mass% or more, it is defined as being blended as an individual flying pest repellent component.

[0040] (Other Components) In addition to the flying pest repellent component, the flying pest repellent product 100 may also contain an absorption-promoting component and a repellent effect-sustaining component. Furthermore, as long as the effects of this embodiment are not impaired, the product may also contain functional components, solvents, surfactants, solubilizers, dispersants, stabilizers, pH adjusters, colorants, and the like, as needed. In these cases, the flying pest repellent component is prepared as a flying pest repellent composition together with other components and is retained in the silicone rubber molded body. Furthermore, by microencapsulating or cyclodextrinizing the flying pest repellent composition, for example, it is possible to stabilize the flying pest repellent composition or adjust the volatility of the flying pest repellent component.

[0041] <Absorption Promoting Component> The absorption promoting component is a component that promotes absorption of the flying pest repellent component into the silicone rubber molded article. Preferred absorption promoting components are d-limonene and / or 1,8-cineole. The content of the absorption promoting component in the flying pest repellent composition is preferably 2.0 to 65 mass%, more preferably 10 to 45 mass%.

[0042] <Repellent Effect Sustaining Component> The repellent effect sustaining component is a component that sustains the repellent effect of the flying pest repellent component when it volatilizes. The repellent effect sustaining component preferably further contains a glycol and / or glycol ether having a vapor pressure at 20°C of 0.2 to 20 Pa. Specific examples of glycols and / or glycol ethers (also listing their vapor pressures at 20°C) include propylene glycol (10.7 Pa), dipropylene glycol (1.3 Pa), tripropylene glycol (0.67 Pa), diethylene glycol (3 Pa), triethylene glycol (1 Pa), 1,3-butylene glycol (8 Pa), hexylene glycol (6.7 Pa), benzyl glycol (2.7 Pa), diethylene glycol monobutyl ether (3 Pa), dipropylene glycol monobutyl ether (6 Pa), and tripropylene glycol monomethyl ether (1.7 Pa), with dipropylene glycol being preferred. The repellent effect sustaining component may be used alone or in combination with two or more other components. The mass ratio of the repellent effect sustaining component to the flying pest repellent component is preferably about 0.05 to 5 times.

[0043] <Functional Ingredients> Examples of functional ingredients include deodorizing ingredients, disinfecting and antibacterial ingredients, etc. Representative deodorizing ingredients are plant extracts selected from the Poaceae, Theaceae, Ginkgoceae, Oleaceae, Moraceae, Rutaceae, Canthaceae, and Ebenaceae families. Leaf alcohol, leaf aldehyde, and the like, known as "green scent," can also be added to impart a relaxing effect. Functional ingredients can be used singly or as a mixture of two or more.

[0044] <Solvent> Examples of the solvent include water, lower alcohols such as ethanol and isopropanol, ketone solvents, ester solvents, hydrocarbon solvents such as normal paraffin and isoparaffin, etc. The solvents can be used alone or as a mixture of two or more.

[0045] <Surfactant> Examples of surfactants include nonionic surfactants such as polyoxyethylene hydrogenated castor oil, polyoxyethylene higher alkyl ethers (polyoxyethylene lauryl ether, polyoxyethylene oleyl ether, etc.), polyoxyethylene alkylphenyl ethers, polyoxyethylene higher fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene polyoxypropylene alkyl ethers, and higher alkylamine oxide surfactants such as laurylamine oxide, stearylamine oxide, and lauric acid amidopropyldimethylamine oxide. One type of surfactant can be used alone, or two or more types can be used as a mixture.

[0046] <Content of Flying Pest Repellent Component or Flying Pest Repellent Composition in Flying Pest Repellent Product> The content (retained amount) of the flying pest repellent component or flying pest repellent composition in the flying pest repellent product 100 may be set appropriately depending on the intended use and period of use of the flying pest repellent product 100, and the type and specifications of the molded product 10. For example, in the case of a flying pest repellent product 100 that is used for 8 to 12 hours per use, it is appropriate to retain 20 to 500 mg of the flying pest repellent component per molded product 10. In the case of a flying pest repellent product 100 that is used for 15 to 30 days, it is preferable to blend approximately 100 to 2000 mg of the flying pest repellent component per molded product 10.

[0047] <Retention of Flying Pest Repellent Component in Silicone Rubber Molded Body> The flying pest repellent product 100 is obtained as molded body 10 by adding a flying pest repellent component or a flying pest repellent composition containing the flying pest repellent component to a silicone rubber molded body and carrying out a predetermined treatment to incorporate (e.g., retain or impregnate) the flying pest repellent component into the silicone rubber molded body. A conventionally known method can be appropriately employed as a method for incorporating the flying pest repellent component or flying pest repellent composition into the silicone rubber molded body. For example, when the surface area of ​​the silicone rubber molded body is large, the flying pest repellent component or flying pest repellent composition is supported by a chemical dispensing method or a coating method. When the surface area of ​​the silicone rubber molded body is small, multiple silicone rubber molded bodies are placed in a sealed container, and the flying pest repellent component or flying pest repellent composition, together with a solvent if necessary, is added to the silicone rubber molded body and sprayed or dripped thereon to penetrate the silicone rubber molded body. Furthermore, it is also possible to obtain a flying pest repellent product 100, which is a molded body 10 containing a flying pest repellent component or a flying pest repellent composition, by immersing a silicone rubber molded body in a liquid of the flying pest repellent component or the flying pest repellent composition for an appropriate period of time, or by mixing a silicone rubber molded body containing a high concentration of the flying pest repellent component or the flying pest repellent composition with an untreated silicone rubber molded body in a sealed container and leaving it for an appropriate period of time to average the concentration of the flying pest repellent component or the flying pest repellent composition throughout the silicone rubber molded body.

[0048] (Shape and specifications of the flying pest repellent product) The shape and specifications of the flying pest repellent product 100 will be described. The shape of the flying pest repellent product 100 is the same as the shape of the silicone rubber molded body described above. Therefore, the shape of the flying pest repellent product 100 described below also corresponds to the description of the shape of the silicone rubber molded body.

[0049] As shown in FIGS. 1 and 2 , the flying pest repellent product 100 (molded body 10) of this embodiment is a strip-shaped or annular body having a plurality of first elements E1 and a plurality of second elements E2. The first elements E1 and the second elements E2 have different configurations. The first elements E1 and the second elements E2 are alternately arranged along the longitudinal axis R of the strip-shaped or annular body (annular body in FIG. 1 ). In the embodiment shown in FIGS. 1 and 2 , the first elements E1 and the second elements E2 have different shapes. Specifically, the first elements E1 are formed thicker than the second elements E2. Furthermore, the first elements E1 are formed as convex portions at the top and bottom, from one side to the other, obliquely in one direction of the longitudinal axis R (clockwise in FIG. 1 ) and connected (merged) at the other side. The concave portion sandwiched between two consecutive first elements E1 is formed as the second element E2.

[0050] In a silicone rubber molded body, when first elements E1 and second elements E2 having different configurations, such as different thicknesses or different inclinations relative to the longitudinal axis R (different shapes), are arranged alternately along the longitudinal axis R, adjacent first elements E1 and second elements E2 have different configurations and can perform different functions depending on their configurations. According to the flying pest repellent product 100, when adjacent first elements E1 and second elements E2 are considered as a single unit, the unit performs two different functions attributable to each element. By arranging the unit consecutively along the longitudinal axis R, the first elements E1 and second elements E2 can be arranged alternately, and the flying pest repellent product 100 as a whole performs two functions. One of the first element E1 and the second element E2 (here, the first element E1) can function primarily as a volatilization portion that volatilizes the flying pest repellent component retained in the gaps in the molecular structure of the silicone rubber in the silicone rubber molded body, while the other (here, the second element E2) can function primarily as an extension portion that extends the size of the silicone rubber molded body along the longitudinal axis R. Therefore, by alternately arranging the first element E1 and the second element E2 along the longitudinal axis R, it is possible to simultaneously enhance the mutually opposing effects of repellency and wearability. Furthermore, as shown in Figures 1 and 2, in this embodiment, the first element E1 and the second element E2 are alternately and regularly arranged along the longitudinal axis R, which allows the volatilization portions and extension portions to be more evenly arranged overall, thereby further improving the repellency and wearability.

[0051] In the flying pest repellent product 100, it is preferable that the first element E1 primarily functions as a volatilization portion that volatilizes the flying pest repellent component held in the gaps in the molecular structure of the silicone rubber, and the second element E2 primarily functions as an extension portion that extends the longitudinal size of the molded product 10. By dividing the functions between the first element E1 and the second element E2 in this way, it is possible to more reliably simultaneously enhance the mutually contradictory effects of repellency and wearability. However, the first element E1 may also function as an extension portion that secondarily extends the longitudinal size of the molded product 10, and the second element E2 may also function as a secondarily volatilization portion that volatilizes the flying pest repellent component held in the gaps in the molecular structure of the silicone rubber.

[0052] 1 and 2, the flying pest repellent product 100 is preferably configured so that the cross-sectional area S1 of the first element E1 in a direction perpendicular to the longitudinal axis R is larger than the cross-sectional area S2 of the second element E2 in a direction perpendicular to the longitudinal axis R. By setting the cross-sectional area S1 of the first element E1 larger than the cross-sectional area S2 of the second element E2, simply by changing the shape, the relatively thick first element E1 can function as the above-mentioned volatilization portion, and the relatively thin second element E2 can function as the above-mentioned extension portion. Therefore, with a simpler configuration, it is possible to reliably simultaneously enhance the mutually opposing effects of repellency and wearability.

[0053] In the flying pest repellent product 100, it is preferable that at least one of the first element E1 and the second element E2 is configured to intersect obliquely with respect to the longitudinal axis R when viewed from the side (in the direction of the white arrow in FIG. 1 , i.e., as viewed in FIG. 2 ). By configuring at least one of the first element E1 and the second element E2 to intersect obliquely with respect to the longitudinal axis R, the boundary between the first element E1 and the second element E2 also intersects obliquely. This reduces stress concentration at the boundary when the flying pest repellent product 100 is pulled along the longitudinal axis R when worn on the wrist or the like, thereby preventing breakage of the flying pest repellent product 100. Furthermore, when wearing the flying pest repellent product 100 on the wrist or the like, the flying pest repellent product 100 is typically pulled obliquely along the wrist or the like, which makes it easier for the flying pest repellent product 100 to roll around the longitudinal axis R, making it easier to wear.

[0054] In the flying pest repellent product 100, when the molded product 10 is worn on a person's wrist or arm, the drag stress measured when the molded product 10 is grasped and pulled toward the wearer while being moved sideways is preferably 7.5 N / 5 mm or less per unit width (5 mm), more preferably 6 N / 5 mm or less, and even more preferably 4 N / 5 mm or less. By setting the drag stress within the above range, the flying pest repellent product 100 can easily move (slide, roll, etc.) on the surface to which it is attached with a relatively small force, making it easy to wear. The method for measuring the drag stress will be explained in the Examples below. "Toward" refers to the direction approaching the wearer, and may be upward toward the wearer, downward toward the wearer, or horizontally toward the wearer.

[0055] The cross-sectional shape of the flying pest repellent product 100 is not particularly limited and can be set as appropriate. For example, the cross-sectional shape of the flying pest repellent product 100 can be represented by the shape of the outer edge of a projection obtained by cutting the molded body 10 perpendicular to the longitudinal axis R and projecting it along the longitudinal axis R. Examples of the shape of the outer edge of the projection include a circle, an ellipse, a polygon such as a square, and shapes with rounded corners of these polygons. Of these, a circle or an approximately circular shape including an ellipse is preferred.

[0056] The thickness (wall thickness) t of the flying pest repellent product 100 is preferably 1.5 to 8 mm, more preferably 2 to 5 mm. By setting the thickness t within the above range, it becomes easy to wear on the wrist, etc. The thickness t means the maximum thickness.

[0057] The width (wall width) w of the flying pest repellent product 100 is preferably 1.5 to 8 mm, more preferably 2 to 5 mm. By setting the width w within the above range, it becomes easy to wear on the wrist, etc. The width w means the maximum width.

[0058] The ratio (t / w) of the thickness t to the width w is preferably 0.3 to 3, more preferably 0.4 to 2, and even more preferably 0.8 to 1.2. By setting the ratio (t / w) within the above range, the flying pest repellent product 100 can easily roll over the surface of the wrist or the like when worn on the wrist or the like, making it easy to wear.

[0059] The mass of the flying pest repellent product 100 is preferably 1 to 10 g, more preferably 2 to 10 g, and even more preferably 3 to 6 g. If the mass of the flying pest repellent product 100 is less than the above range, it may not be possible to retain a sufficiently large amount of the flying pest repellent component. On the other hand, if the mass of the flying pest repellent product 100 exceeds the above range, it may be difficult to wear. In contrast, by setting the mass of the flying pest repellent product 100 within the above range, it is possible to retain a sufficiently large amount of the flying pest repellent component, and it becomes easier to wear.

[0060] The mass of the flying pest repellent product 100 is preferably set in consideration of its relationship with the width w. In this case, for example, it can be set as the mass per unit width (5 mm) of the flying pest repellent product 100. The mass per unit width (5 mm) of the flying pest repellent product 100 is preferably 2.5 g / 5 mm or more, more preferably 3.0 g / 5 mm or more, while it is preferably 5.5 g / 5 mm or less, more preferably 4.5 g / 5 mm or less, and even more preferably 3.5 g / 5 mm or less. By setting the mass per unit width (5 mm) of the flying pest repellent product 100 within the above range, the amount of flying pest repellent component retained per unit width (5 mm) can be sufficiently increased. This also allows the width w of the flying pest repellent product 100 to be relatively small, making it easier to wear.

[0061] The inner circumference (total length of the inner peripheral surface) L of the flying pest repellent product 100 is preferably 150 to 320 mm, more preferably 180 to 240 mm. If the inner circumference is less than this range, it may not be possible to wear it on the wrist or the like, and it may put too much pressure on the wrist or the like. On the other hand, if the inner circumference exceeds this range, it may become detached from the wrist or the like after being worn. In contrast, by setting the inner circumference within this range, it is possible to improve wearability and make it less likely to come off after being worn.

[0062] The diameter of the imaginary maximum inscribed circle that contacts the flying pest repellent product 100 from the inside is preferably 50 to 80 mm, and more preferably 60 to 70 mm. If the imaginary maximum inscribed circle is less than the above range, it may not be possible to wear it on the wrist, etc., and it may also put too much pressure on the wrist, etc. On the other hand, if the imaginary maximum inscribed circle exceeds the above range, it will be more likely to come off the wrist, etc. after being worn. In contrast, by setting the imaginary maximum inscribed circle within the above range, it is possible to improve wearability and make it less likely to come off after being worn.

[0063] The elongation percentage S when the flying pest repellent product 100 is pulled at 30 N is preferably 2.5 to 5.0, and more preferably 3.0 to 4.0. If the elongation percentage S is below the above range, it may not be possible to wear it on the wrist, etc. On the other hand, if the elongation percentage S exceeds the above range, it may easily come off the wrist, etc. after wearing it. The elongation percentage S is determined by using a tensile tester to measure the length G0 of the flying pest repellent product 100 before applying a load and the length G1 when the flying pest repellent product 100 is pulled at 30 N in the direction in which it is most likely to stretch (i.e., the maximum length), and then calculating the ratio of length G1 to length G0 according to the following formula (1) to obtain the elongation percentage S. Elongation percentage S = G1 / G0 (1)

[0064] The degree of stretch of the flying pest repellent product 100 may be set so as to minimize catching on the fist when worn around the wrist, etc. In this regard, it is also preferable to set the degree of stretch in consideration of the relationship with the inner circumference L (mm) of the flying pest repellent product 100. For example, if the inner circumference L of the flying pest repellent product 100 is relatively large, the elongation rate S of the flying pest repellent product 100 may be set relatively small. On the other hand, if the inner circumference L of the flying pest repellent product 100 is relatively small, the elongation rate S of the flying pest repellent product 100 must be set relatively large. Considering this point of view, by setting the product P of the inner circumference L and the elongation rate S of the flying pest repellent product 100 within a predetermined range, it is possible to more appropriately set the degree of stretch of the flying pest repellent product 100. The product P of the inner circumference L and the elongation rate S is preferably 400 to 1000, more preferably 500 to 900, and even more preferably 600 to 800. Setting the product P within the above range makes it easier to wear.

[0065] As described above, the molded body 10 itself can serve as the flying pest repellent product 100. Examples of the flying pest repellent product 100 include a wrist ring, a wristband, and an anklet. As shown in FIG. 1 , a flat portion where neither the first element E1 nor the second element E2 is disposed may be provided in part of the molded body 10.

[0066] The flying pest repellent product 100 thus obtained can be worn in spaces such as entranceways, kitchens, toilets, living rooms, and bedrooms, in warehouses and cars, in gardens, and outdoors, with one to five pieces attached to various parts of the body such as the wrists and ankles as needed, and will provide excellent flying pest repellent effects over a predetermined period of time against flying pests such as mosquitoes such as Culex pipiens molestus and Aedes albopictus, gnats, midges, flies, small gnats (such as fruit flies and phorid flies), moths, and burrowing moths. Furthermore, if the flying pest repellent product 100 does not contain any insecticidal components, it can be used without hesitation even by people who do not like using insecticides, making it extremely practical.

[0067] [Flying pest repellent method] The flying pest repellent method of this embodiment is a flying pest repellent method using the flying pest repellent product 100 of this embodiment described above, and is a method in which flying pests are repelled by wearing the flying pest repellent product 100 on the human body, causing the flying pest repellent component to volatilize around the human body.

[0068] As described above, the flying pest repellent product 100 of this embodiment has enhanced both the repellent effect and the wearability, which are mutually contradictory effects, and therefore there are few reasons to prevent wearing the product, such as difficulty in wearing it or inability to obtain the repellent effect. Therefore, according to the flying pest repellent method of this embodiment, the repellent effect can be improved compared to when a conventional flying pest repellent product is worn on the human body.

[0069] 1 shows an embodiment in which the molded product 10 of the flying pest repellent product 100 is molded into a ring-shaped body, but the molded product may also be formed into a strip-shaped body. When the molded product is a strip-shaped body, it can be made into a ring-shaped body by engaging both ends thereof.

[0070] Another example of a flying pest repellent product that may be used is the one shown in FIG. 4 . FIG. 4 is a schematic plan view of a flying pest repellent product 110 according to another embodiment of the present invention. In the flying pest repellent product 110 shown in FIG. 4 , the first element E1 is disposed obliquely in a virtual plane including the longitudinal axis (not shown) so as to intersect with the longitudinal axis, and the second element E2 is disposed obliquely facing the opposite side from the first element E1, with the overall tip formed in a gear shape (serrated, or in other words, a gear shape with the tip pointed toward the outer and inner peripheries). When worn on the wrist or the like, the flying pest repellent product 110 stands upright from the wrist or the like. In the flying pest repellent product 110, the first element E1 and the second element E2 have a longer overall length (larger mass) than conventional flying pest repellent products that have a uniform thickness and a smooth shape without any jagged edges. As a result, the flying pest repellent product 110 can contain more flying pest repellent components than conventional flying pest repellent products, thereby enhancing repellent effectiveness. Furthermore, when the flying pest repellent product 110 is pulled while worn on the wrist or the like, the boundary (bent portion) between the first element E1 and the second element E2 can deform so as to open, thereby enhancing stretchability compared to conventional flying pest repellent products. In this way, in the flying pest repellent product 110, the first element E1 and the second element E2 cooperate to function as a volatilization portion and an extension portion. Other configurations can be configured similarly to the embodiment shown in FIG. 1 above. The flying pest repellent product 110 shown in FIG. 4 also simultaneously enhances the mutually opposing effects of repellency and wearability.

[0071] Another example of a flying pest repellent product that may be used is the one shown in FIG. 5 . FIG. 5 is a schematic plan view showing a flying pest repellent product 120 according to another embodiment of the present invention. In the flying pest repellent product 120 shown in FIG. 5 , the first element E1 is a portion that protrudes outward in a spiral shape around a longitudinal axis (not shown) and functions as a volatilization portion. When viewed from a direction perpendicular to the longitudinal axis, the first element E1 is formed in a plurality of elements spaced apart along the longitudinal axis and is formed continuously as a whole. This allows the product to contain a larger amount of flying pest repellent component than conventional flying pest repellent products, thereby enhancing the repellent effect. The second element E2 is a recessed portion between adjacent first elements E1 and functions as an extension portion. When viewed from a direction perpendicular to the longitudinal axis, the second element E2 ... enhances the stretchability compared to conventional flying pest repellent products. 1 described above, at least one of the first element E1 and the second element E2 is configured to intersect obliquely with respect to the longitudinal axis when viewed from the side. Meanwhile, the cross-sectional area S1 perpendicular to the longitudinal axis of the first element E1 is configured to be the same as the cross-sectional area S2 perpendicular to the longitudinal axis of the second element E2. Other configurations may be similar to those of the embodiment shown in FIG. 1 described above. In the flying pest repellent product 120 shown in FIG. 5, both of the mutually contradictory effects of repellency and wearability are enhanced.

[0072] As another example, in a flying pest repellent product, instead of forming the first element E1 in a spiral shape, it is also possible to form it in an elliptical disk shape that intersects the longitudinal axis (not shown) at an angle, and use this as the functional part. That is, in FIG. 5, the portions of the first element E1 hidden on the back side are connected to the portions visible on the front side, and adjacent first elements E1 are not continuous, but are separated by a recess. The second element E2 is a recessed portion between adjacent first elements E1 and functions as an extension part. In this case, the cross-sectional area S1 perpendicular to the longitudinal axis of the first element E1 is configured to be larger than the cross-sectional area S2 perpendicular to the longitudinal axis of the second element E2. The other configurations may be similar to those of the embodiment shown in FIG. 1 above. In such a flying pest repellent product, both the mutually opposing effects of repellency and wearability are enhanced.

[0073] Another example of a flying pest repellent product that may be used is the one shown in FIG. 6 . FIG. 6 is a schematic plan view showing a flying pest repellent product 130 according to another embodiment of the present invention. In the flying pest repellent product 130 shown in FIG. 6( a), the first element E1 is a portion that protrudes outward in a radial direction perpendicular to the longitudinal axis (not shown) (i.e., a portion that protrudes outward on the outer periphery) and functions as a volatilization portion. When viewed from a direction perpendicular to the longitudinal axis and perpendicular to the radial direction, the first element E1 is formed in a plurality of spaces along the longitudinal axis and is formed continuously as a whole. This allows the product to contain a larger amount of flying pest repellent components than conventional flying pest repellent products, thereby enhancing the repellent effect. The second element E2 is a recessed portion between adjacent first elements E1 and functions as an extension portion. When viewed from a direction perpendicular to the longitudinal axis and perpendicular to the radial direction, the second element E2 is formed in a plurality of spaces along the longitudinal axis and is formed continuously as a whole. This provides improved flexibility compared to conventional flying pest repellent products. The flying pest repellent product 130 is formed with an overall uneven shape (a gear shape with a flat tip) in which the outer periphery (the side farther from the wrist, etc.) partially protrudes outward. The cross-sectional area S1 perpendicular to the longitudinal axis of the first element E1 is larger than the cross-sectional area S2 perpendicular to the longitudinal axis of the second element E2. The inner peripheries of the first element E1 and the second element E2 are flat along their entire circumference. Other configurations may be similar to those of the embodiment shown in FIG. 1 above. The flying pest repellent product 130 has a shape similar to that of an annular molded body 200 with a uniform cross section perpendicular to the longitudinal axis (i.e., uniform thickness and width), as shown by the dashed line in FIG. 6(b) (or as shown in FIG. 7), with the outer periphery cut out. As shown in Fig. 6(b), the molded body 200 is virtually divided into a plurality of sections (at equal intervals in Fig. 6(b)) along the longitudinal axis, and every other virtual section is cut out from the outer periphery toward the inner periphery so as to reduce the thickness, thereby obtaining the flying pest repellent product 130. Such a flying pest repellent product 130 can be formed, for example, by cutting out the dashed line portions from a circular molded body as shown in Fig. 6(b).Alternatively, for example, it can be formed using a mold hollowed out to the shape of the molded article as shown in Fig. 6(a) In the flying pest repellent product 130 shown in Fig. 6(a) , both of the mutually contradictory effects of repellency and wearability are enhanced.

[0074] EXAMPLES The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to these examples.

[0075] Example 1 After adding a vulcanizing agent and the like to a silicone compound, the mixture was poured into two halves of a mold to form the shape shown in Fig. 1, and the halves were joined together and then demolded to obtain a silicone molded article. A flying pest repellent composition (60% by mass of flying pest repellent components) was obtained by blending 12% by mass of benzyl acetate, 4% by mass of p-tert-butylcyclohexyl acetate, 7% by mass of allyl heptanoate, 14% by mass of dihydromyrcenol, and 8% by mass of geraniol as flying pest repellent components, 15% by mass of other flying pest repellent components, 24% by mass of d-limonene as an absorption promoter, and 16% by mass of dipropylene glycol as a repellent effect sustaining component. The flying pest repellent composition was impregnated into a silicone molded body so that 100 mg (60 mg of flying pest repellent component) per molded body (3.3 g) was used to obtain the flying pest repellent product of Example 1, an integrally molded string ring-shaped product having the shape shown in Figure 1 and the properties shown in Table 1. The hardness (HA), elongation S, and drag stress of the flying pest repellent product of Example 1 were measured, and the wearability and chemical impregnation properties were evaluated according to the methods described below. The results are shown in Table 1.

[0076] <Hardness> Shore A hardness (HA) was measured using a durometer (type A) in accordance with Japanese Industrial Standards (JIS K6253).

[0077] <Elongation S> Using a tensile tester, the length G0 of the flying pest repellent product (silicone rubber molding) before load application and the length G1 (i.e., maximum length) when the flying pest repellent product (silicone rubber molding) was pulled at 30 N in the direction in which it was most stretchable were measured, and the ratio of length G1 to length G0 was calculated according to the following formula (1) to obtain the elongation S: Elongation S = G1 / G0 (1)

[0078] <Drag Stress> Figure 3 is a schematic diagram showing a method for measuring the drag stress of the flying pest repellent products of the examples and comparative examples, Figure 3(a) is a diagram showing the state before moving the molded body 10 (i.e., flying pest repellent product 100) sideways (upper part of Figure 3), and Figure 3(b) is a diagram showing the state after moving the molded body 10 sideways (upper part of Figure 3). As shown in Figure 3(a), the drag stress was measured by placing a simulated arm 50 (diameter approximately 6.5 cm) wrapped in artificial skin (Bioskin Plate P001-001, manufactured by Viewlux Co., Ltd.) on a base, passing the flying pest repellent product 100 through the simulated arm 50, and hooking the hook portion 61 of the push-pull portion 60 of the push-pull tester on the flying pest repellent product 100 so that the flying pest repellent product 100 was parallel to the base and did not slide off. Then, as shown in Figure 3(b), the hook portion 61 was pulled up laterally (upward in Figure 3) (white arrow in Figure 3(b)), and the stress when pulled up 12 cm was obtained as the drag stress. The obtained drag stress was converted into stress per unit width (5 mm) to obtain the drag stress per unit width (5 mm) (N / 5 mm).

[0079] <Wearability> Seven panelists wore the flying pest repellent product of Example 1 on their wrists, and each panelist scored the wearability using the following evaluation criteria, giving it a score of 0, 1, 2, or 3. The average of the scores of the seven evaluators was calculated and then evaluated using the following criteria. (Evaluation criteria) 0 points: Almost no snagging occurred during application, making it extremely easy to apply (excellent). 1 point: It got snagged during application, but could be easily applied by applying a little force (good). 2 points: It got snagged during application, but could be applied by applying a moderate amount of force (acceptable). 3 points: It got snagged during application, making it impossible to apply without applying a strong force (poor). (Evaluation criteria) A: 0.3 points or less B: More than 0.3 points and 0.8 points or less C: More than 0.8 points and 1.5 points or less D: More than 1.5 points and 2.0 points or less E: More than 2.0 points

[0080] <Chemical impregnation> The greater the mass per unit width (5 mm) of a flying pest repellent product (silicone rubber molded product), calculated from its mass and width, the greater the amount of flying pest repellent component that can be incorporated into the product when worn on the arm or the like, while reducing the contact area with the arm or the like. This reduces friction between the flying pest repellent product and the arm or the like, improving wearability, and also reduces exposure of the chemical to the skin while increasing the repellent effect. Therefore, the mass per unit width (5 mm) of the flying pest repellent product (silicone rubber molded product) was evaluated according to the following criteria. (Evaluation criteria) A: The mass per unit width (5 mm) of the molded product is 3.0 g / 5 mm or more (excellent). B: The mass per unit width (5 mm) of the molded product is 2.5 g / 5 mm or more and less than 3.0 g / 5 mm (good). C: The mass per unit width (5 mm) of the molded article is 2.0 g / 5 mm or more and less than 2.5 g / 5 mm (normal). D: The mass per unit width (5 mm) of the molded article is less than 2.0 g / 5 mm (poor).

[0081] Example 2 As in Example 1, a vulcanizing agent was added to the silicone compound, and the mixture was poured into two mold halves separated to form the shape shown in FIG. 4. The halves were then joined together and demolded to obtain a silicone molded body. This silicone molded body (4.0 g) was impregnated with 125 mg of the same flying pest repellent composition as in Example 1 (75 mg of the flying pest repellent component), yielding a string-ring-shaped flying pest repellent product of Example 2 having the gear shape shown in FIG. 4 and the properties shown in Table 1. The hardness (HA), elongation (S), and drag stress of the flying pest repellent product of Example 2 were measured in the same manner as in Example 1, and the wearability and chemical impregnation properties were evaluated. The results are shown in Table 1.

[0082] (Reference Examples 1 to 12) Flying pest repellent products of Reference Examples 1 to 12 were prepared by impregnating a silicone rubber molded body having the shape and properties shown in Tables 2 to 4 with the same flying pest repellent composition as in Example 1, in such a way that the impregnation amount of the flying pest repellent composition was 100 mg per 3.3 g of the molded body, as in Example 1. For these flying pest repellent products of Reference Examples 1 to 12, the hardness (HA) was measured for Reference Examples 1 and 2, and the wearability and chemical impregnation properties were evaluated, as in Example 1. For Reference Examples 3 to 12, the hardness (HA), elongation S, and drag stress were measured, and the wearability and chemical impregnation properties were evaluated. The results are shown in Tables 2 to 4. Reference Examples 1 to 12 were formed to have the shape of molded body 300 shown in FIG. 7 and the properties shown in Tables 2 to 4. The molded body 300 in FIG. 7 is formed so that the cross section perpendicular to the longitudinal axis (not shown) is rectangular and the cross-sectional area is constant over the entire periphery, i.e., the thickness and width are constant over the entire periphery.

[0083]

[0084]

[0085]

[0086]

[0087] The flying pest repellent products of Examples 1 and 2, in which a plurality of first elements E1 and a plurality of second elements E2 are arranged alternately along the longitudinal axis, were rated "A" for both wearability and chemical impregnation, demonstrating excellent wearability and chemical impregnation. In Example 1, the results of evaluating the elongation S, drag stress, and wearability of the silicone rubber molded body before impregnation with the flying pest repellent composition were equivalent to the evaluation results of the elongation S, drag stress, and wearability of the flying pest repellent product of Example 1 after impregnation, as shown in Table 1.

[0088] In contrast, the flying pest repellent products of Reference Examples 1 to 12, which do not have a first element E1 and multiple second elements E2, received a rating of "C" or below for at least one of their wearability and drug impregnation ability (a rating of "C" or "D," and some received an "E" rating for wearability), indicating that at least one of their wearability and drug impregnation ability is not excellent.

[0089] Example 3 As in Example 1, a vulcanizing agent was added to the silicone compound, and the mixture was poured into two molds divided into two halves to form the shape shown in FIG. 6(a). The halves were then joined together and demolded to obtain a silicone molded body. This silicone molded body (1.6 g) was impregnated with 50 mg of the same flying pest repellent composition as in Example 1 (30 mg of flying pest repellent component), yielding a string-ring-shaped flying pest repellent product of Example 3 having the uneven shape (gear shape with a flat tip) shown in FIG. 6(a) and the properties shown in Table 5. The hardness (HA), elongation S, and drag stress of the flying pest repellent product of Example 3 were measured in the same manner as in Example 1, and the wearability and chemical impregnation properties were evaluated. The results are shown in Table 5.

[0090] (Reference Examples 13 and 14) Flying pest repellent products of Reference Examples 13 and 14 were prepared by impregnating a silicone rubber molded body having the shape shown in FIG. 7 and the properties shown in Table 5 with the same flying pest repellent composition as in Example 1 in such a way that the impregnation amount of the flying pest repellent composition was 100 mg per 3.3 g of the molded body, as in Example 1. Reference Example 14 has the same width as Reference Example 13 but is thicker. For these flying pest repellent products of Reference Examples 13 and 14, the hardness (HA), elongation S, and drag stress were measured in the same manner as in Example 1, and the wearability and chemical impregnation ability were evaluated. The results are shown in Table 5.

[0091]

[0092] The flying pest repellent product of Example 3, in which multiple first elements E1 and multiple second elements E2 are arranged alternately along the longitudinal axis, was rated "B" for wearability and "A" for chemical impregnation, demonstrating excellent wearability and chemical impregnation. In Example 3, the results of evaluating the elongation S, drag stress, and wearability of the silicone rubber molded body before impregnation with the flying pest repellent composition were equivalent to the evaluation results of the elongation S, drag stress, and wearability of the flying pest repellent product of Example 3 after impregnation, shown in Table 5.

[0093] In contrast, Reference Example 13, in which the first element E1 and a plurality of second elements E2 are not arranged (i.e., a molded body having the same cross-sectional shape around the entire circumference), has a wearability rating of "B" and a drug impregnation rating of "A", which is equivalent to Example 3, but has a smaller elongation rate S than Example 3 and a larger drag stress. Reference Example 14, which is similar to Example 13 in that the first element E1 and a plurality of second elements E2 are not arranged but is thicker than Reference Example 13, has a drug impregnation rating of "A", but has a wearability rating of "D", which indicates that the wearability is inferior to Example 3. Furthermore, Reference Example 14 is thicker than Example 3 and has a larger thickness and a larger thickness-to-width ratio, but has a smaller elongation rate S than Example 3 and a larger drag stress.

[0094] The flying pest repellent product of the present invention and the flying pest repellent method using the same are easy to wear and have a high repellent effect, so they can be easily worn not only indoors but also when going outdoors, and can reliably exhibit their repellent effect.

[0095] 100, 110, 120, 130 Flying pest repellent product 10, 11, 12, 13 Molded body E1 First element E2 Second element R Longitudinal axis

Claims

1. A flying pest repellent product comprising a molded body containing a silicone rubber base material and a flying pest repellent component, wherein the molded body is a strip-shaped or ring-shaped body having a plurality of first elements E1 and a plurality of second elements E2 (the first elements E1 and the second elements E2 have different configurations), and the first elements E1 and the second elements E2 are arranged alternately along the longitudinal axis of the strip-shaped or ring-shaped body.

2. A flying pest repellent product as described in claim 1, wherein the cross-sectional area S1 of the first element E1 in a direction perpendicular to the longitudinal axis is configured to be larger than the cross-sectional area S2 of the second element E2 in a direction perpendicular to the longitudinal axis.

3. A flying pest repellent product as described in claim 2, wherein at least one of the first element E1 and the second element E2 is configured to intersect obliquely with respect to the longitudinal axis when viewed from the side.

4. A flying pest repellent product as described in claim 1, wherein when the molded body is worn on a person's wrist or arm, the drag stress measured when the molded body is grasped and pulled toward the person while being moved sideways is 7.5 N / 5 mm or less per unit width (5 mm).

5. A flying pest repellent product as described in any one of claims 1 to 4, wherein the first element E1 mainly functions as a volatilization section that volatilizes the flying pest repellent component held in the gaps in the molecular structure of the silicone rubber, and the second element E2 mainly functions as an extension section that extends the longitudinal size of the molded body.

6. A flying pest repellent method using the flying pest repellent product according to claim 5, wherein the flying pest repellent product is attached to the human body, causing the flying pest repellent component to volatilize around the human body, thereby repelling flying pests.

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