JP2023067023A - Insect pest attracting and inhibiting material - Google Patents

Abstract

To provide an insect pest attracting and inhibiting material which, even in the case of utilizing a white LED lamp, has excellent performance for attracting and inhibiting insect pest while securing human visual recognition.SOLUTION: There are infinitesimal peaks in the range of 440-470 nm and 500-550 nm respectively. An insect pest attracting and inhibiting material has a transmission spectrum where the light transmissivity of the infinitesimal peaks is 20% or less in the range of 440-470 nm, and so in the range of 500-550 nm.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a pest attraction blocking material that reduces light in the wavelength range to which pests are sensitive and suppresses the flying pests.

It is known that phototaxis, in which insects are attracted to a light stimulus and fly around a light source, is induced by light in a specific wavelength range. As shown in FIG. 8, the wavelength of light that causes phototaxis in many insects is in the wavelength region of 200-600 nm centered at 360-380 nm.
For this reason, conventionally, various methods have been tried to block light in the wavelength range to which insects are sensitive for nighttime lighting as a countermeasure against insect pests.

An acrylic resin film that prevents insects from attracting insects that specifically blocks light in the ultraviolet region and has a transmittance of 20% or less in a wavelength of 400 nm or less and a transmittance of 55% or more in a visible light region of 420 nm or more. (Patent Document 1) and a pest attracting/blocking material in which a transparent synthetic resin contains a light shielding agent that selectively absorbs light with a wavelength of 200 to 500 nm (Patent Document 2) has been proposed.

In addition, the light with a wavelength of 380 nm or less is substantially blocked, the light transmittance of the wavelength of 400 to 480 nm is 30% or less, the light transmittance of the wavelength of 520 nm or more is 50% or more, and the light transmittance of the wavelength of 580 nm or more is 50% or more. A synthetic resin sheet that does not substantially block light has been proposed (Patent Document 3).

Further, a pest attraction blocking material having a light transmittance of 10% or less at a wavelength of 200 to 420 nm, 30% or less at a wavelength of 420 to 480 nm, and 20 to 50% at a wavelength of 480 nm or longer is disclosed (Patent Document 4).

a first layer made of a translucent film containing a yellowish colorant having a light transmittance of 5% or less in a wavelength range of 450 nm or less and a light transmittance of 80% or more in a wavelength range exceeding 550 nm; A second layer made of a light-transmitting film containing a blue-based colorant having a light transmittance of 5% or less in a wavelength range of 350 nm or less and a light transmittance of 50% or more in a wavelength range exceeding 400 nm. A pest attraction prevention sheet has been proposed (Patent Document 5).
In addition, a pest attraction/blocking material has been disclosed which has a translucent film containing a yellowish colorant and a blueish colorant having a complementary color relationship with the yellowish colorant (Patent Document 6).

JP-A-2000-169767 JP-A-63-133933 Japanese Patent Publication No. 4-65651 Japanese Patent No. 2682818 Japanese Patent No. 6282131 JP 2015-149921 A

However, the pest attraction and prevention films described in Cited Documents 1 and 2 mainly block ultraviolet rays, and the attraction and prevention effect is insufficient due to lack of control over visible light. On the other hand, the pest attraction prevention materials of Cited Documents 3 to 6 are intended to control not only the light in the ultraviolet region but also the visible light within a certain range so as to prevent the attraction of pests while considering human visibility. However, it was possible to further improve the human visibility and attraction prevention effect. In addition, none of the pest attraction prevention materials are intended to be applied to white LED light source lamps, which have been in widespread use in recent years. was there.
Here, in the present specification, “human visibility” refers to the brightness necessary for recognizing the shape of an object, and the color rendering properties (color reproducibility) that indicate how colors are seen. It is an index related to recognition such as discovery, understanding, and visibility of an object when viewed with a .

In view of the above points, the present invention provides a pest attraction blocking material that has excellent pest attraction blocking ability while exhibiting human visibility, particularly high color rendering properties, even when a white LED light source lamp is used. intended to

In view of the above object, the present inventors have studied in more detail the emission spectral distribution of a white LED light source lamp and the spectral sensitivity of insects, and localized light transmittance in two specific wavelength ranges in the visible light region. The present inventors have found that by lowering the density, it is possible to more effectively prevent insects from attracting insects while maintaining visibility for humans, particularly high color rendering, and have completed the present invention.

That is, the present invention provides the following pest attraction-blocking material.
[1] There are minimum peaks in the range of 440 to 470 nm and in the range of 500 to 550 nm, respectively, the light transmittance of the minimum peak in the range of 440 to 470 nm is 20% or less, and it exists in the range of 500 to 550 nm. A pest attracting and deterring material having a transmission spectrum in which the light transmittance at the minimum peak of the light transmission is 20% or less.
[2] The light transmittance of the minimum peak in the range of 440 to 470 nm is 5 to 20%, and the light transmittance of the minimum peak in the range of 500 to 550 nm is 10 to 20%. of pest attractants.
[3] The pest attraction-blocking material according to [1] or [2], wherein the minimal peak in the range of 440 to 470 nm is in the range of 445 to 455 nm.
[4] The pest attraction and deterrent material according to any one of [1] to [3], wherein the minimum peak in the range of 500 to 550 nm is in the range of 510 to 540 nm.
[5] The pest attraction/blocking material according to any one of [1] to [4], which has a light transmittance of 30% or less in the range of 430 to 570 nm.
[6] The pest attraction/blocking material according to [5], which has a light transmittance of 5 to 30% in the range of 430 to 570 nm.
[7] The pest attraction/blocking material according to [5], which has a light transmittance of 10 to 25% in the range of 430 to 570 nm.
[8] The pest attraction/blocking material according to any one of [1] to [7], which has a light transmittance of 20% or more in the range of 600 nm or more.
[9] The pest attraction-blocking material according to [8], which has a light transmittance of 30% or more in the range of 600 nm or more.
[10] The pest attracting/blocking material according to any one of [1] to [9], which has a light transmittance of at least 15% in a wavelength region longer than 550 nm.

As described above, the pest attraction blocking material of the present invention has a precise light transmittance in the visible light region so that the light transmittance at the minimum wavelength in two specific narrow wavelength ranges in the visible light region is 20% or less. controlled. As shown in FIG. 7, the spectral radiant intensity of the white LED light source lamp is almost zero in the region below 400 nm. On the other hand, the spectral radiant intensity of the white LED light source lamp has the largest peak (intensity ratio: about 3.5) near 450 nm, then decreases to an intensity ratio of 1 or less at 480 nm, and then increases to 570 nm. There is a second peak nearby (intensity ratio: about 2.3), from which it smoothly decreases.
On the other hand, as shown in FIG. 8, the runnability of many insects is greatest in the region of 400 nm or less, becomes less than 1/10 of the maximum peak near 420 nm, and then gradually increases to 450 nm. It becomes about 1/10 of the maximum peak at around 480 nm, and reaches about 1/5 at around 480 nm. After that, it gradually decreases but turns to increase near 500 nm, has a small peak near 520 nm, and then decreases to zero near 560 nm. In the present invention, both spectra are closely matched, and the minimum wavelength in two specific narrow wavelength ranges in the visible light region, specifically, the minimum wavelength in the range of 440 to 470 nm, preferably 445 to 455 nm and 500 to 550 nm , and preferably, the pest attractant deterrent material is designed to have a light transmission spectrum in which the light transmittance of each extremely short wavelength in the range of 520 to 530 nm is 20% or less. As demonstrated by the examples described later, the pest attraction-blocking material of the present invention exhibits a more effective pest attraction-blocking effect while ensuring good visibility for humans by such precise control of the light transmission spectrum. demonstrate.

1 shows the light transmission spectrum of the sheet of Example 1. FIG. Circles indicate minimal peaks. 2 shows the light transmission spectrum of the film of Example 2. FIG. Circles indicate minimal peaks. 4 shows the light transmission spectrum of the film of Comparative Example 1. FIG. 4 shows the light transmission spectrum of the sheet of Comparative Example 2. FIG. Circles indicate minimal peaks. 4 shows the light transmission spectrum of the film of Comparative Example 3. FIG. Circles indicate minimal peaks. The outline of the apparatus used for the test of the insect-proof attraction suppression effect is shown. 4 shows the spectral radiant intensity of a general daylight white LED light source lamp. 1 is a graph showing an example of the relationship between insect runnability and wavelength (quoted from E.D. Bickford, I.E.S. Nat-conf. Paper, 1964).

Embodiments of the present invention will be described in detail. However, the present invention should not be understood as being limited to the following embodiments.

The present invention, in its embodiment, has a light transmission spectrum having a minimum peak in two specific narrow wavelength ranges near 450 nm and near 520 nm in the visible light region, each having a light transmittance of 20% or less. To provide a pest attraction deterrent. As mentioned above, based on the spectral sensitivity of insects and the spectral radiant intensity of white LED light source lamps, by locally reducing the light transmittance in these two narrow wavelength ranges, it is possible to improve the effect while ensuring good human visibility. It is possible to exhibit a pest attracting and inhibiting effect.

Specifically, the pest attraction blocking material according to the embodiment of the present invention has minimal peaks in the range of 440 to 470 nm and in the range of 500 to 550 nm, and has a light transmittance of 20% or less, respectively. The optical transmittance spectrum of the optical region is controlled. Here, in the specification of the present application, the “minimal peak” means that the light transmittance present in a certain wavelength range (for example, the range of 440 to 470 nm) is the minimum, and the light transmittance increases at wavelengths before and after that. means the point where
The light transmittance of the minimum peak in the range of 440 to 470 nm is preferably 5 to 20%, more preferably 10 to 20%, in order to effectively exhibit the pest attracting and suppressing effect while exhibiting better color rendering properties. %, more preferably 15 to 20%. Similarly, the minimum peak light transmittance in the range of 500 to 550 nm is preferably 10 to 20%, more preferably 10 to 18%, still more preferably 10 to 15%.

Also, in order to exhibit a higher effect of suppressing insect attraction, the minimum peak in the range of 440 to 470 nm is preferably in the range of 445 to 455 nm, more preferably in the range of 447 to 453 nm. Similarly, the minimum peak in the range of 500-550 nm is preferably in the range of 510-540 nm, more preferably in the range of 520-530 nm.

In addition, since the range of 430 to 570 nm is the main wavelength range to which many insects are sensitive in the visible light region, in order to further enhance the attraction prevention effect while ensuring human visibility, light transmission in this range Preferably, the transmittance is controlled between 5 and 30%, more preferably between 10 and 25%.

On the other hand, it is preferable to increase the light transmittance in the wavelength region greater than 550 nm so that there is no minimal peak near 555 nm. Around 570 nm, there is a peak having the second emission intensity of the white LED light source lamp, but around 555 nm is the wavelength at which humans feel the brightness most strongly, and in the wavelength region greater than 550 nm, many insects have spectral sensitivities. (runnability) is very small and becomes almost zero at 600 nm. Therefore, by increasing the light transmittance in this wavelength range, it is possible to further improve the visibility for humans without adversely affecting the effect of suppressing insect attraction. Specifically, in a wavelength region longer than 550 nm, the light transmittance is preferably at least 15%, more preferably 20% or more. More specifically, the light transmittance is preferably 15% to 70%, more preferably 20% to 70%.

In particular, in the range of 600 nm or more, the spectral sensitivity (running degree) of insects is almost zero, and the emission intensity of the white LED light source lamp gradually decreases. In order to increase it, the light transmittance is preferably 20% or more, more preferably 30% or more. More specifically, the light transmittance is preferably 20% to 70%, more preferably 30% to 70%.

As mentioned above, the spectral radiant intensity of a white LED light source lamp is almost zero in the range below 400 nm. Therefore, when the pest attraction blocking material is applied to a white LED light source lamp, light absorption properties in the region of 400 nm or less are not required. However, in order to be applicable to fluorescent lamps, light absorption characteristics in the region of 400 nm or less may be imparted. In this case, the light transmittance in the range of 420 nm or less is preferably 30%, more preferably 20%.

The above-described transmission spectrum of the pest attraction/blocking material can be obtained by appropriately combining a yellow or orange colorant, a red or violet colorant, and a blue or black colorant.
More specifically, a yellow or orange colorant can absorb light mainly in the range of 440 to 470 nm, particularly around 450 nm. In addition, the red or violet colorant can absorb light mainly in the range of 500 to 550 nm, particularly around 520 nm. In addition, the blue or black colorant compensates for the absorption of low-absorbing wavelengths by the yellow or orange colorant and the red or violet colorant, so that the total light in the range of 430 to 570 nm can be obtained. can be absorbed.
Each individual coloring material has its own light transmission spectrum, and when designing a pest attraction deterrent material having a desired transmission spectrum, the colorant is selected according to the light transmission spectrum of the coloring material to be used. It is necessary to determine the combination, the content of each colorant and the thickness of the pest attractant deterrent. However, in many cases, the pest attraction prevention material is designed with a thickness of 0.01 mm to 3.0 mm, and the yellow or orange colorant is usually 0.002 to 3.0% in the pest attraction prevention material. of 0.005 to 1.5% is preferable. In many cases, the red or violet colorant may be contained at a concentration of 0.001 to 1.0% in the pest attraction and inhibition material, and is contained at a concentration of 0.002 to 0.5%. It is preferable to let In addition, the blue or black colorant may normally be contained in the pest attraction and inhibition material at a concentration of 0.001 to 1.0%, and should be contained at a concentration of 0.002 to 0.5%. is preferred.

The yellow-based or orange-based coloring material is not particularly limited, but pigments are preferable in terms of weather resistance, and azo-based, isoindolinone-based, azomethine-based, diketopyrrolopyrrole-based, or perinone-based coloring materials are preferred. Pigments may be mentioned.
Among them, diketropyrrolopyrrole-based oranges are preferable in terms of weather resistance, transparency, and wavelength absorption.

The red-based or violet-based coloring material is not particularly limited, but pigments are preferable from the viewpoint of weather resistance, and examples thereof include quinacridone-based, dioxazine-based, and perylene-based pigments. Among them, dioxazine-based violet is preferable in terms of weather resistance, transparency, and wavelength absorption.

The blue or black coloring material is not particularly limited, but pigments are preferable from the viewpoint of weather resistance. Examples of blue coloring materials include copper phthalocyanine, anthraquinone, and cobalt pigments. Among them, copper phthalocyanine is preferable in terms of weather resistance and transparency. Examples of the black type include carbon black, iron oxide, copper/chromium black, and the like. Among them, carbon black is preferable from the viewpoint of weather resistance and transparency.

When designing a pest attracting/blocking material applicable to fluorescent lamps, it is preferable to incorporate an ultraviolet absorber in order to impart light absorption properties in the region of 400 nm or less. Examples of ultraviolet absorbers include benzophenone-based, benzotriazole-based, cyanoacrylate-based, and triazine-based ultraviolet absorbers. Benzophenone UV absorbers include 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, 2,2-di-hydroxy-4-methoxybenzophenone, 2,2-di-hydroxy -4,4-di-methoxybenzophenone.

Benzotriazole-based UV absorbers include 2-(5-methyl-2-hydroxyphenyl)benzotriazole, 2-(3,5-di-t-butyl-2-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3-t-butyl-5-methyl-2-hydroxyphenyl)-5-chlorobenzotriazole and the like. Cyanoacrylate UV absorbers include 2-ethylhexyl 2-cyano-3,3-diphenyl acrylate, ethyl 2-cyano-3,3-diphenyl acrylate, hexadecyl 2-cyano-3-(4-methylphenyl) acrylate. etc. Triazine-based UV absorbers include 2,4,6-tris(2-hydroxy-4-hexyloxy-3-methylphenyl)-1,3,5-triazine and the like.

The pest attracting/blocking material can be produced, for example, by molding a solid composition containing the above-described coloring material and a transparent resin into a sheet, film, plate, or the like under pressure and/or heat, so that the coloring material is contained in the resin. It can be manufactured by forming a molded product dispersed in The obtained molded product may be further laminated on a transparent resin sheet, film, plate, or the like to serve as a pest attracting/blocking material.
The resin that disperses the coloring material and the resin that constitutes the sheets on which the coloring material-dispersed sheets are laminated is not particularly limited as long as it is transparent. Examples include vinyl chloride resin, acrylic resin, polyester resin, and polyethylene. resins and polycarbonate resins. Moreover, when imparting adhesiveness to the pest attraction-blocking material, a resin obtained by imparting adhesiveness to the above-described resin may be selected.

Examples of the method for molding the pest attraction blocking material in which the coloring material is dispersed in the resin include an extrusion method and a calendering method. In the extrusion method, various compounding agents are put into a cylinder through an inlet, and while a large screw called a screw is turned to feed the material, it is melted, kneaded, and extruded in a fixed shape from a nozzle to be molded. In the calendering method, various compounding agents are heated and kneaded to form a fluid compound. A thin film is formed along the surface of the cooled roller, wound up and molded.
The composition to be molded usually contains 50 to 99.99% by mass of resin, 0.005 to 1.5% by mass of yellow or orange colorant, and 0.002 to 0.5% by mass of red. or violet-based coloring material, 0.002-0.5% by mass of blue-based or black-based coloring material, and 0-1.0% by mass of ultraviolet absorber may be blended, 70 to 99.9% by mass of resin, 0.005 to 0.2% by mass of yellow or orange colorant, and 0.002 to 0.1% by mass of red or violet colorant , 0.002 to 0.1% by mass of a blue or black colorant and 0 to 0.1% by mass of an ultraviolet absorber.

The pest attracting and inhibiting material can also be obtained by preparing a liquid composition by dissolving the above-described colorant and transparent resin in a solvent, and using this composition as a base material (when used as a laminate, the base material is made of a transparent resin). ) and volatilize the solvent.
A solution containing a coloring material and a resin in an organic solvent usually contains 10 to 30% by weight of a resin, 0.01 to 0.6% by weight of a yellow or orange coloring material, and 0.002 to 0.002% by weight of a yellow or orange coloring material. 2% by mass of a red or violet colorant, 0.002 to 0.2% by mass of a blue or black colorant, 0 to 0.5% by mass of an ultraviolet absorber, and 70 to 90 It may be prepared by blending 15 to 25% by mass of an organic solvent, 15 to 25% by mass of a resin, 0.1 to 0.3% by mass of a yellow or orange colorant, and 0.003 to 0.003% by mass of a yellow or orange colorant. 1% by mass of a red or violet colorant, 0.003 to 0.1% by mass of a blue or black colorant, 0 to 0.3% by mass of an ultraviolet absorber, and 75 to 85 It is preferable to mix and prepare an organic solvent in an amount of % by mass. The organic solvent is not particularly limited as long as it can dissolve the resin. Examples include esters such as ethyl acetate and butyl acetate, alcohols such as isopropyl alcohol, and aromatic solvents such as toluene and xylene. can. In addition, when the pest attraction blocking material is produced as an adhesive film, it can be produced by dissolving the adhesive resin together with the coloring material described above in a solvent and applying this composition to the substrate. Examples of such adhesive resins include acrylic adhesives, urethane adhesives, silicone adhesives, and the like.
There are no particular restrictions on the method of coating the substrate, and for example, a bar coater, gravure coater, reverse coater, or the like can be used.
A composition or solution containing a colorant and a resin may optionally contain additives such as stabilizers, processing aids, plasticizers, fillers, colorants, and antibacterial agents.

Since the light transmittance also varies depending on the thickness of the pest-attraction-blocking material, the thickness of the pest-attraction-blocking material is preferably adjusted as appropriate so as to obtain a desired light transmission spectrum. Although it varies depending on the content of the coloring material, it is usually from 0.01 mm to 3.0 mm, preferably from 0.02 mm to 2.0 mm.

The pest attraction blocking material of the present invention is preferably applied mainly to white LED light source lamps. White LED light source lamps include a combination of a blue LED and a yellow phosphor, and a combination of a blue LED, a green LED and a red LED. , a combination of a near-ultraviolet LED and a blue-green-red phosphor, etc., and it is desirable to apply it to a white LED light source lamp using the most common blue LED and a yellow phosphor. However, a pest attraction blocking material imparted with ultraviolet absorption properties can also be applied to a light source that emits light in the ultraviolet region, such as a fluorescent lamp.
The pest attraction blocking material of the present invention can be used, for example, as a partition in buildings such as factories, or as a curtain after being cut into strips. In addition, by imparting adhesiveness, it can be used as an insect repellent film by attaching it to transparent window glass, acrylic plates, etc. of buildings at sites such as factories and restaurants. It is also used as a coating for straight tube lamps and as a light unit cover for insect repellent lights. It is also used as a shutter sheet or a partition sheet by laminating it on both sides of a polyester base fabric.

EXAMPLES The present invention will be described in more detail below with reference to Examples, but the present invention is not limited to these. Hereinafter, unless otherwise specified, "part" indicates parts by mass and "%" indicates mass %.

[Example 1]
A polyvinyl chloride-based coloring composition was prepared by blending the above components.

A reddish-brown sheet having a thickness of 0.3 mm was prepared from the resulting colored composition by a calendering method. This sheet can be used as an insect repellent sheet, as a partition for buildings such as factories, or as a curtain after being cut into strips.
The prepared sheet was analyzed for transmittance in the range of 300 nm to 800 nm with a spectrophotometer (V-670 manufactured by JASCO Corporation). FIG. 1 shows the obtained light transmission spectrum. As shown in FIG. 1, it has a light transmittance of 13-22% in the range of 430-570 nm, but the light transmittance is 32% or more in the range of 600 nm or more. Moreover, in the range of 440 to 470 nm, there was a minimum peak at 445 nm, and the light transmittance was 16%. Moreover, in the range of 500 to 550 nm, there was a minimum peak at 530 nm, and the light transmittance was 13%.

得られた着色組成物を、バーコーターにて、厚さ５０μｍのポリエステルフィルムに、厚さ２０μｍで塗布し、これに、離型フィルムを貼り合わせ、黄緑系の接着フィルムを作成した。これは、防虫フィルムとして、工場、レストラン等の現場で、離型フィルムを剥離し、建築物の透明な窓ガラス、アクリル板等に貼り付けて利用される。
離型フィルムを剥離後の粘着フィルムについて、３００ｎｍ～８００ｎｍの範囲の透過率を、分光光度計（日本分光社製Ｖ－６７０）により分析した。図２に、得られた光透過スペクトルを示す。図２に示す通り、４３０～５７０ｎｍの範囲では７～２７％の光透過率を有するが、６００ｎｍ以上の範囲では光透過率が２１％以上である。また、４４０～４７０ｎｍの範囲では４４５ｎｍに極小ピークがあり、その光透過率は７％であった。また、５００～５５０ｎｍの範囲では５３０ｎｍに極小ピークがあり、その光透過率は１８％であった。 [Example 2]
An acrylic colored adhesive composition was prepared by blending the above components.

The resulting colored composition was applied to a polyester film having a thickness of 50 μm with a bar coater to a thickness of 20 μm, and a release film was attached to the film to prepare a yellow-green adhesive film. This is used as an insect repellent film at sites such as factories and restaurants by peeling off the release film and attaching it to transparent window glass, acrylic plates, etc. of buildings.
The transmittance in the range of 300 nm to 800 nm of the adhesive film after peeling off the release film was analyzed with a spectrophotometer (V-670 manufactured by JASCO Corporation). FIG. 2 shows the obtained light transmission spectrum. As shown in FIG. 2, the light transmittance is 7 to 27% in the range of 430 to 570 nm, and the light transmittance is 21% or more in the range of 600 nm or more. Moreover, there was a minimum peak at 445 nm in the range of 440 to 470 nm, and the light transmittance was 7%. Also, in the range of 500 to 550 nm, there was a minimum peak at 530 nm, and the light transmittance was 18%.

得られた着色組成物を、バーコーターにて、厚さ５０μｍのポリエステルフィルムに、厚さ２０μｍで塗布し、これに、離型フィルムを貼り合わせ、灰色系の接着フィルムを作成した。
作成した粘着フィルムを、離型フィルムを剥離した状態で、３００ｎｍ～８００ｎｍの範囲の透過率を、分光光度計（日本分光社製Ｖ－６７０）により分析した。図３に、得られた光透過スペクトルを示す。図３に示す通り、４３０～５７０ｎｍの範囲では１７～２２％の光透過率を有し、６００ｎｍ以上の範囲では、光透過率が２４％以上である。４３０～８００ｎｍまで光透過率がなだらかに上昇し、４４０～４７０ｎｍの範囲および５００～５５０ｎｍの範囲に極小ピークが存在しない。 [Comparative Example 1]
An acrylic colored adhesive composition was prepared by blending the above components.

The resulting colored composition was applied to a polyester film having a thickness of 50 μm with a bar coater to a thickness of 20 μm, and a release film was attached to the film to prepare a grayish adhesive film.
The prepared pressure-sensitive adhesive film, with the release film removed, was analyzed for transmittance in the range of 300 nm to 800 nm with a spectrophotometer (V-670 manufactured by JASCO Corporation). FIG. 3 shows the obtained light transmission spectrum. As shown in FIG. 3, the light transmittance is 17-22% in the range of 430-570 nm, and the light transmittance is 24% or more in the range of 600 nm or more. There is a gradual increase in light transmission from 430 to 800 nm, with no minimum peaks in the 440-470 nm range and the 500-550 nm range.

[Comparative Example 2]
A polyvinyl chloride-based coloring composition was prepared by blending the above components.

A red-purple sheet having a thickness of 0.3 mm was prepared from the resulting colored composition by a calendering method.
The prepared sheet was analyzed for transmittance in the range of 300 nm to 800 nm with a spectrophotometer (V-670 manufactured by JASCO Corporation). FIG. 4 shows the obtained light transmission spectrum. As shown in FIG. 4, it has a light transmittance of 11 to 56% in the range of 430 to 570 nm, and a light transmittance of 40% or more in the range of 600 nm or more. No minimum peak was observed in the range of 440-470 nm, the light transmission was 52% at 440 nm and 36% at 470 nm. A minimum peak was observed at 530 nm in the range of 500 to 550 nm, and the light transmittance was 11%.

得られた着色組成物を、バーコーターにて、厚さ５０μｍのポリエステルフィルムに、厚さ２０μｍで塗布し、これに、離型フィルムを貼り合わせ、黄緑系の接着フィルムを作成した。
作成した粘着性フィルムを、離型フィルムを剥離した状態で、３００ｎｍ～８００ｎｍの範囲の透過率を、分光光度計（日本分光社製Ｖ－６７０）により分析した。図５に、得られた光透過スペクトルを示す。図５に示す通り、４３０～５７０ｎｍの範囲では８～３０％の光透過率を有し、６００ｎｍ以上の範囲では、光透過率が１７～３７％である。４４０～４７０ｎｍの範囲における極小ピークが４５０ｎｍにあり、その光透過率は８％であった。５００～５５０ｎｍの範囲においては、光透過率は、１９％から２９％に増加していき極小ピークは認められなかった。 [Comparative Example 3]
An acrylic colored adhesive composition was prepared by blending the above components.

The resulting colored composition was applied to a polyester film having a thickness of 50 μm with a bar coater to a thickness of 20 μm, and a release film was attached to the film to prepare a yellow-green adhesive film.
The produced adhesive film was analyzed for transmittance in the range of 300 nm to 800 nm with a spectrophotometer (V-670 manufactured by JASCO Corporation) in a state where the release film was peeled off. FIG. 5 shows the obtained light transmission spectrum. As shown in FIG. 5, it has a light transmittance of 8-30% in the range of 430-570 nm, and a light transmittance of 17-37% in the range of 600 nm or more. The minimum peak in the range of 440-470 nm was at 450 nm and the light transmittance was 8%. In the range of 500-550 nm, the light transmittance increased from 19% to 29% and no minimum peak was observed.

[Evaluation test]
Visible light transmittance, general color rendering index (Ra), and insect attraction prevention rate were evaluated for the insect attraction prevention materials of Examples 1 and 2 and Comparative Examples 1 to 3.

1. Visible Light Transmittance Visible light transmittance was determined according to JIS A5759 by measuring light transmittance at wavelengths from 380 to 780 nm using a spectrophotometer.

2. General color rendering index (Ra)
It is a color rendering evaluation index that indicates how faithfully each test color can be reproduced when illuminated with the target light source for each test color R1 to R8 viewed with the reference light specified in JIS Z8726. .
The light obtained from the 10-type straight tube neutral white LED lamps coated with the pest attractant deterrent materials of Examples 1 and 2 and Comparative Examples 1 to 3 was measured using a spectral irradiance meter (UPRTEK PG-200N). The average color rendering index (Ra) was obtained by calculating the average value of R1 to R8.

3. Effect of Preventing Insect Attraction The white LED lamps coated with the anti-insect attraction materials of Examples 1 and 2 and Comparative Examples 1 to 3 were compared with white LED lamps not coated with the anti-insect attraction material to evaluate the effect of preventing insect attraction.
The test was conducted using the illumination device shown in FIG. This device incorporates each of the white LED lamps 14 described above, and adhesive sheets 13 are attached to both sides of the lamps. Therefore, the insects attracted to the white LED lamp 14 are captured by the adhesive sheet 13 . In the test, the lighting device was placed on the cardboard 17 and used. As the white LED lamp, model number: LDF10ss, N/6/6, manufactured by Ohm Electric Co., Ltd. was used.
In the test, a white LED lamp coated with each pest attraction blocking material and a white LED lamp not covered with the pest attraction blocking material were placed 5 m apart, and when turned on for 20 minutes at night, they were captured by the adhesive sheet of each device. From the number of insects, the attraction inhibition rate was calculated according to the following formula.

The test results for the average color rendering index (Ra) and the insect attraction and inhibition effect of the white LED lamp coated with each insect attraction and inhibition material are shown below together with the light transmission characteristics of each insect attraction and inhibition material in the visible light region.

As described above, the visible light transmittance was the same as 21 or 22% for any of the pest attraction and deterrent materials of Examples 1 and 2 and Comparative Examples 1 to 3, but the pest attraction and deterrent materials of Examples 1 and 2 While the coated white LED lamp exhibited high color rendering properties and exhibited an excellent pest attraction prevention effect, the white LED lamps coated with the pest attraction prevention materials of Comparative Examples 1 to 3 prevented pest attraction. was less effective. In addition, the white LED lamps coated with the pest attraction-blocking materials of Comparative Examples 2 and 3 were inferior in terms of color rendering properties.

1 Lighting device 2 Adhesive sheet 3 Light source (white LED lamp coated with each pest attraction blocking material or white LED lamp not coated with pest attraction blocking material)
4 Cardboard

Claims (10)

There are minimal peaks in the range of 440 to 470 nm and in the range of 500 to 550 nm, respectively, the light transmittance of the minimal peak in the range of 440 to 470 nm is 20% or less, and the minimal peak in the range of 500 to 550 nm A pest attracting and deterring material having a transmission spectrum in which the light transmittance of is 20% or less. The pest attractant of claim 1, wherein the light transmittance of the minimal peak in the range of 440-470 nm is 5-20%, and the light transmittance of the minimal peak in the range of 500-550 nm is 10-20%. blocking material. 3. The pest attraction and deterrent material according to claim 1 or 2, wherein the minimum peak in the range of 440 to 470 nm is in the range of 445 to 455 nm. 4. The pest attraction/blocking material according to any one of claims 1 to 3, wherein the minimum peak in the range of 500 to 550 nm is in the range of 510 to 540 nm. 5. The pest attraction and deterrent material according to any one of claims 1 to 4, which has a light transmittance of 30% or less in the range of 430 to 570 nm. 6. The pest attraction and deterrent material according to claim 5, which has a light transmittance of 5 to 30% in the range of 430 to 570 nm. 6. The pest attraction and deterrent material according to claim 5, which has a light transmittance of 10 to 25% in the range of 430 to 570 nm. 8. The pest attraction/blocking material according to any one of claims 1 to 7, which has a light transmittance of 20% or more in the range of 600 nm or more. 9. The pest attraction and deterrent material according to claim 8, which has a light transmittance of 30% or more in the range of 600 nm or more. 10. The pest attract/deterrent material according to any one of claims 1 to 9, which has a light transmittance of at least 15% in a wavelength range greater than 550 nm.

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