WO2011016361A1

WO2011016361A1 - Adhesive sheet for capturing pests and method for producing same

Info

Publication number: WO2011016361A1
Application number: PCT/JP2010/062573
Authority: WO
Inventors: 康夫大山; 彦弥森口
Original assignee: 大協技研工業株式会社
Priority date: 2009-08-07
Filing date: 2010-07-27
Publication date: 2011-02-10
Also published as: JP5297936B2; JP2011036153A

Abstract

Disclosed is a low-cost adhesive sheet for capturing pests, which has excellent capability of capturing the pests (captivity) and usability (workability), and is capable of selectively capturing the pests. Specifically disclosed is an adhesive sheet for capturing pests, which is configured from a base material layer with an uneven structure, which has the thickness of 0.03 mm to 0.5 mm, and has convex sections that have the spacing of 1 mm to 7 mm, the maximum length of 1 mm to 7 mm, the height of 0.1 mm to 3.0 mm, and the convex surface area of 1.0 mm² to 36 mm², and which is capable of expressing the contrast effect by the variations of light and shade, and an adhesive layer which is formed in the thickness of 0.03 mm to 0.1 mm on the base material layer.

Description

Pest capturing adhesive sheet and method for producing the same

The present invention relates to an adhesive sheet for capturing pests and a method for producing the same. More specifically, it is necessary to capture pests (for example, southern whiteflies, white spotted whiteflies, silver leaf whiteflies etc. that cause damage to tomatoes, eggplants, cucumbers, melons, etc.) Adhesive sheet for capturing pests with excellent pest capture performance (capture) and usability (workability), which is suitable for use in home gardens, veranda gardens, etc. It relates to the manufacturing method.

As such an adhesive sheet for capturing pests, an adhesive sheet colored yellow, blue or pink, which is a pest attracting color (a color attracting pests), is widely used. Many of such adhesive sheets for capturing insects are formed by applying an adhesive to the surface of a flat substrate, but the insect capturing ability is not always satisfactory. In addition, products that change the attracting color according to the type of pest, some that use a pest attractant or pheromone in combination, and those that combine the above-mentioned adhesive sheet with an ultraviolet lamp are also popular. (For example, refer to Patent Document 1).

In addition, conventional adhesive sheets for capturing pests capture unlimited insects such as beneficial insects that are not harmful insects, small animals and birds other than insects, especially bumblebees and black bees that have an important role in pollinating plants. In addition, the adhesive comes into contact with the operator's hair and skin, plant leaves, stems, etc., reducing workability and reducing the adhesive surface of the adhesive sheet for capturing pests, etc. There was an inconvenience. In consideration of this, for example, a pest capturing sheet configured to capture only pests and prevent beneficial insects from adhering to the adhesive layer by attaching a mesh forming member to the adhesive sheet has been proposed (for example, Patent Document 2).

JP 2003-306401 A JP 2005-304462 A

However, the pest-capturing pressure-sensitive adhesive sheet described in Patent Document 1 and Patent Document 2 is not necessarily satisfactory in terms of sufficient attractability and securing of a capture area necessary for improving the capture ability of the pests. In addition, the configuration was complicated and the cost was inevitably high. The present invention has been made to solve the above-mentioned problems, and is excellent in performance (capture) and usability (workability) for capturing pests, and is capable of selectively capturing pests and is a low-cost pest. It aims at providing the adhesive sheet for capture, and its manufacturing method.

In order to achieve the above object, according to the present invention, the following pest-capturing pressure-sensitive adhesive sheet and a method for producing the same are provided.
[1] It has a thickness of 0.03 mm to 0.5 mm, a distance of 1 mm to 7 mm, a maximum length of 1 mm to 7 mm, a height of 0.1 mm to 3.0 mm, and a height of 1.0 mm ² to 36 mm ² A base material layer having a convexity of a convex surface area and having a concavo-convex structure capable of expressing a contrast effect due to light contrast, and an adhesive formed on the base material layer to a thickness of 0.03 mm to 0.1 mm An adhesive sheet for capturing pests comprising a layer.
[2] A colored layer having a thickness of 0.005 mm to 0.02 mm and an attracting color for attracting insects and having the concavo-convex structure is further provided between the base material layer and the adhesive layer. The adhesive sheet for capturing pests according to [1].
[3] The above [2] further comprising a protective layer having a thickness of 0.005 mm to 0.02 mm and water resistance and having the concavo-convex structure between the colored layer and the pressure-sensitive adhesive layer. The adhesive sheet for capturing pests as described.
[4] The above [1] to [1], wherein the pressure-sensitive adhesive layer, the colored layer and the pressure-sensitive adhesive layer, or the colored layer, the protective layer and the pressure-sensitive adhesive layer are formed on one side or both sides of the base material layer. 3] The pest-capturing pressure-sensitive adhesive sheet according to any one of 3).
[5] The pest-capturing pressure-sensitive adhesive sheet according to any one of the above [1] to [4], further comprising a release material on the surface of the pressure-sensitive adhesive layer.
[6] The adhesive sheet for capturing pests according to any one of the above [1] to [5], which has a strip shape or a roll shape.
[7] A base material layer having a thickness of 0.03 mm to 0.5 mm is formed at intervals of 1 mm to 7 mm, a maximum length of 1 mm to 7 mm, a height of 0.1 mm to 3.0 mm, and 1.0 mm ² to One or both sides of the surface of the base material layer embossed and embossed so as to have a concavo-convex structure having a convex part with a convex surface area of 36 mm ² and capable of expressing a contrast effect due to light contrast And a method for producing an adhesive sheet for capturing pests, comprising applying an adhesive to a thickness of 0.03 mm to 0.1 mm to form an adhesive layer.
[8] A colored layer having a thickness of 0.005 mm to 0.02 mm and an insect attracting color and / or 0.005 mm to 0.00 on the one or both sides of the surface of the base material layer before embossing. A protective layer having a thickness of 02 mm and water resistance is laminated to form a laminate having the base material layer and the colored layer and / or protective layer, and the laminate is spaced from 1 mm to 7 mm, 1 mm to 7 mm. becomes maximum length, with a convex portion of the height and the convex surface area of 1.0 mm ² ~ 36 mm ² of 0.1 mm ~ 3.0 mm, a shape having a concave-convex structure capable of expressing a contrast effect by light and shade [7] The embossing is performed as described above, and the pressure-sensitive adhesive is applied to one or both surfaces of the embossed laminate to a thickness of 0.03 mm to 0.1 mm to form the pressure-sensitive adhesive layer [7] Pest capture adhesive sheet as described in Manufacturing method.

According to the present invention, it is possible to provide a pest-capturing pressure-sensitive adhesive sheet and a method for manufacturing the pest that are excellent in performance (capturing ability) and usability (workability) of pests and can selectively capture pests. Can do.

It is a top view which shows typically the adhesive sheet for insect pest capture which concerns on embodiment of this invention. FIG. 1B is a sectional view taken along line AA in FIG. 1A.

DESCRIPTION OF SYMBOLS 1 Convex part 2 Concave part 10 Pest capturing adhesive sheet 11 Base material layer 12 Colored layer 13 Protective layer 14 Adhesive layer 15 Release material 20 Uneven structure 30 Suspension hole D Protrusion interval L Maximum length H Convex part Height of

[Adhesive sheet for capturing pests according to embodiments]
FIG. 1A is a plan view schematically showing an adhesive sheet for capturing pests according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line AA in FIG. 1A.

As shown in FIG. 1A and FIG. 1B, a pest-capturing pressure-sensitive adhesive sheet 10 according to an embodiment of the present invention has a strip shape and is 0.03 mm to 0.5 mm, preferably 0.07 mm to 0.4 mm. 1 mm to 7 mm, preferably 3 mm to 5 mm, 1 mm to 7 mm, preferably 3 mm to 5 mm maximum length, 0.1 mm to 3.0 mm, preferably 0.5 mm to 2.0 mm A base material layer 11 having a concavo-convex structure 20 having a height and a convex portion 1 having a convex surface area of 1.0 mm ² to 36 mm ² , preferably 4 mm ² to 25 mm ² and capable of expressing a contrast effect due to light contrast. And a pressure-sensitive adhesive layer 14 having a thickness of 0.03 mm to 0.1 mm, preferably 0.04 mm to 0.07 mm, on the base material layer 11.

Moreover, the pest-capturing adhesive sheet 10 of the present embodiment has a hanging hole 30, and a plurality of them are usually suspended at a predetermined place. The shape may be other shapes such as an L-shaped cross-section, a U-shaped cross-section, a box shape, a tubular shape, a lantern shape, a roll winding shape, and a multi-layered shape.

In FIG. 1A and FIG. 1B, in addition to the basic structure described above, a gap between the base material layer 11 and the pressure-sensitive adhesive layer 14 is further 0.005 mm to 0.02 mm, preferably 0.008 mm to A colored layer 12 having a thickness of 0.015 mm and an attracting color for attracting insects and having an uneven structure 20, a thickness of 0.005 mm to 0.02 mm, preferably 0.006 mm to 0.015 mm, and water resistance In this case, the protective layer 13 having the concavo-convex structure 20 is provided.

Moreover, in FIG. 1A and FIG. 1B, although the coloring layer 12, the protective layer 13, and the adhesive layer 14 are each provided in this order on both surfaces of the base material layer 11, it shows on the single side | surface of the base material layer 11. The colored layer 12, the protective layer 13, and the pressure-sensitive adhesive layer 14 may be provided in this order.

The base material layer 11 used in the present invention has elasticity and flexibility and is often exposed to rain dew, so it has waterproofness and weather resistance, and can be disposed of as general waste. It is preferable that the layer 14 is made of a material that can reliably hold the layer 14 and the like. For example, synthetic paper or paper is preferable because it has a small environmental load at the time of disposal. Specific examples include milk carton paper, coated cardboard, double-sided PE (polyethylene) film laminated paper, and the like. Further, it may be at least one synthetic resin selected from the group consisting of polyester, polyethylene, polystyrene, and polyurethane, a metal foil, or a nonwoven fabric.

The base material layer 11 used in the present invention has a thickness of 0.03 mm to 0.5 mm, preferably 0.07 mm to 0.4 mm. If it is less than 0.03 mm, the shape of the concavo-convex structure becomes too smooth, and the contrast effect due to light contrast may not be expressed. If it exceeds 0.5 mm, the shape of the concavo-convex structure is not molded into the set mold. , It may become a concavo-convex structure.

The base material layer 11 used in the present invention has the uneven structure 20 as described above. That is, a distance (D) of 1 mm to 7 mm, preferably 3 mm to 5 mm (D), a maximum length (L) of 1 mm to 7 mm, preferably 3 mm to 5 mm, 0.1 mm to 3.0 mm, preferably 0.5 mm to 2 mm. Convex / concave having a convex portion 1 having a height (H) of 0 mm and a convex surface area of 1.0 mm ² to 36 mm ² , preferably 4 mm ² to 25 mm ² , and a concave portion 2 that can exhibit a contrast effect due to light contrast. It has a structure 20. Therefore, as will be described later, the surface of the pressure-sensitive adhesive layer 14 that is configured to be applied substantially uniformly on the base layer 11 or the colored layer 12 or the protective layer 13 also has the same uneven structure 20. Will have. In addition, although the convex part 1 in the concavo-convex structure 20 shows the case where it is a columnar shape having a quadrangle in a top view, it may be a columnar shape having a circular shape, a rhombus, etc. in a top view. Such a shape may be used. For example, in the case of a regular quadrangular pyramid, the maximum length (L) means not the length of the narrower square side in the top view but the length of the wider square side at the bottom. The convex surface area means the area of the narrower square at the top as viewed from above. Furthermore, in the case of a rectangular truncated pyramid, the maximum length (L) means the length of the longer side of the bottom rectangle in top view.

The reason for having such a concavo-convex structure 20 is that in the natural world, attention is paid to the fact that the surfaces of the leaves and stems of the plants where the insects gather are not flat, but rugged. Is reproduced. That is, by utilizing the fact that insects are attracted more and more to places with light contrast of light, the above-described concavo-convex structure 20 is configured so as to express the contrast effect due to light contrast, and Capturing property is improved.

Specifically, when light is irradiated, the adhesive surface layer 14 has the concavo-convex structure 20, so that the inside of the concave portion 2 becomes dark and the convex portion 1 becomes bright due to light reflection, and light is applied to the adhesive surface layer 14. The contrast of light and dark occurs. It has recently been reported that insects are strongly attracted to such light contrasts. For example, Dr. Natalie Hempel de Lbarra of the University of Sussex, UK, reports: In other words, honeybees perform visual localization effectively using color information and brightness contrast information in terms of visual physiology, but when approaching from a distance, they are rather light and dark. It reports that it uses contrast information. When using such light contrast of light, as will be described later, the range of attracting insect pests is extended. Compared to the case where it does not, the attracting effect can be exhibited 2 to 3 times, it is possible to improve the capture property, and it is possible to reduce the number of installed sheets to 1/2 to 1/3. A significant cost reduction is possible.

Moreover, by adjusting the shape of the concavo-convex structure 20 of the base material layer 11 and the adhesive surface layer 14 within the above-mentioned range of dimensions, the contact area between the worker and the leaves and stems of the worker and the plant changes. Therefore, it is possible to easily remove the film again and to install it in a dense part of the plant, thereby improving usability (workability). Further, in practice, a product is often stored and transported by laminating a release material on the surface of the pressure-sensitive adhesive layer 14 as a product. In this case, since light release is possible, an inexpensive product such as a general-purpose release is available. Paper can be used, and cost can be reduced.

Moreover, when using as a laminated product which laminated | stacked such an adhesive sheet, the peeling force at the time of peeling can be reduced without weakening the adhesive force of the adhesive layer 14, and usability (workability | operativity) is improved. Can be made. If the adhesive strength of the adhesive is weakened, sagging may occur due to the flow of the adhesive, which may contaminate the crop.

In addition, since it can reduce the contact area with the legs of beneficial insects such as bumblebees that have relatively large and long legs compared to the pests, it is possible to reliably capture only pests with a short body length and select pests. Capture is possible.

Furthermore, since the concavo-convex structure 20 is provided, the rigidity of the adhesive sheet for capturing pests is increased, and curling is effectively prevented. When curling is prevented, the effective area of the pressure-sensitive adhesive layer can be maintained, and the appearance of the appearance as design can be maintained.

The pressure-sensitive adhesive used for the pressure-sensitive adhesive layer 14 having the above-described concavo-convex structure 20 can surely capture pests, prevent sagging due to flow at high temperatures, and reduce the peeling force in a laminated product. There is no particular limitation, but for example, it is preferable that the adhesive strength is restored when dried with water resistance and is transparent so as not to block the attractive color. The cohesive force is preferably from 10 ² Pa · s to 2 × 10 ⁶ Pa · s, for example, from the viewpoint of surely capturing pests, preventing sagging, and reducing the peel force. Specifically, at least one transparent adhesive selected from the group consisting of acrylic, rubber and silicon can be mentioned as a suitable example. It may be a hot-melt type pressure-sensitive adhesive suitable for fiber coating described later. Note that the pressure-sensitive adhesive layer may cover the entire base material layer 11 or may cover at least a part thereof.

Although there is no restriction | limiting in particular as a formation method of the adhesive layer 14, For example, methods, such as printing, painting, affixing, can be used. Moreover, what is called fiber coating using the fine convection pattern formation phenomenon by volatilization of a volatile solvent may be used. By this fiber coating, it is possible to reduce the amount of the adhesive used per unit area, and to form the adhesive layer 14 having a uniform thickness that conforms to the shape of the concavo-convex structure. The thickness of the pressure-sensitive adhesive layer 14 is usually 0.03 mm to 0.1 mm, preferably 0.04 mm to 0.07 mm.

As described above, in the present embodiment, in addition to the basic configuration, as shown in FIGS. 1A and 1B, a gap of 0.005 mm to 0 is further provided between the base material layer 11 and the adhesive layer 14. 0.02 mm, preferably 0.008 mm to 0.015 mm in thickness and an attracting color that attracts insects, and has a colored layer 12 having a concavo-convex structure 20, and 0.005 mm to 0.02 mm, preferably 0.8 mm. A protective layer 13 having a concavo-convex structure 20 as well as having a thickness of 006 mm to 0.015 mm and water resistance is provided.

In the present embodiment, as described above, it is preferable that at least a part of the base material layer 11 is covered with the colored layer 12 from the viewpoint of improving the capturing ability. The colored layer 12 used in the present embodiment is preferably one that is colored in an attractive color unique to pests. As an attractive color, yellow, blue, or pink can be mentioned as a suitable example, for example. Yellow, blue or pink attracting colors are reflection colors using Munsell color values, yellow is hue: 4Y, brightness: 7, saturation: 14, and blue is hue: 3.0PB, brightness: 5.4, saturation: 10.6, and pink is particularly preferably in the range of hue: 5R, lightness: 6.5, saturation: 8. In this case, the attracting color may be formed by printing a yellow, blue or pink pigment on the substrate layer 11 as a coating layer, or by kneading the yellow, blue or pink pigment into the substrate layer 11. May be.

In order to enhance the attractiveness of pests, an ultraviolet reflecting layer and / or an ultraviolet absorbing layer may be further disposed on the attracting color. Suitable examples of the ultraviolet reflecting layer include those containing at least one selected from the group consisting of zinc oxide, calcium oxide, titanium oxide, lead oxide, fluorescent pigment, and aluminum powder. In addition, as the ultraviolet absorbing layer, for example, a layer containing at least one ultraviolet absorber selected from the group consisting of salicylic acid type, benzophenone type and benzotriazole type can be given as a suitable example.

The colored layer 12 used in the present embodiment has a thickness of 0.005 mm to 0.02 mm, preferably 0.008 mm to 0.015 mm. If it is less than 0.005 mm, yellow fading may increase due to sunlight, and if it exceeds 0.02 mm, fine cracks may be generated in the colored layer and the attraction effect may be reduced.

In the present embodiment, as described above, it is preferable that the base material layer 11 and the colored layer 12 are covered with the protective layer 13 from the viewpoint of improving weather resistance and preventing deformation of the concavo-convex structure. . That is, the protective layer 13 used in the present embodiment needs to cover inferior water resistance, etc., when the thin paper is used as the base material layer 11 from the viewpoint of reducing the environmental load at the time of disposal. It is effective because it exists. In particular, in the case of thin paper, the concavo-convex structure 20 formed by embossing may break the mold due to the pressure applied to the concavo-convex structure 20, and therefore, the protective layer 13 can be used to prevent the deformation. preferable. Specifically, both surfaces of the base material layer 11 made of thin paper (usually, since the colored layer 12 is formed on both surfaces of the base material layer 11, in this case, the respective surfaces of the colored layer 12) are protective layers. 13. For example, it is preferable to laminate with, for example, a polyethylene film, and to apply heat at 50 ° C. to 200 ° C. during embossing to form the concavo-convex structure 20 so that it does not lose its shape even at room temperature.

The protective layer 13 used in the present invention has a thickness of 0.005 mm to 0.02 mm, preferably 0.006 mm to 0.015 mm. When the pressure-sensitive adhesive sheet is roll-rolled when it is less than 0.005 mm, the shape of the concavo-convex structure may be collapsed by the winding pressure, and when it exceeds 0.02 mm, the pressure when forming the concavo-convex structure increases. May cause wrinkles on the substrate.

[Method for producing adhesive sheet for capturing pests]
In the method for producing an adhesive sheet for capturing pests according to the present embodiment, the base material layer 11 having a thickness of 0.03 mm to 0.5 mm is separated by a distance of 1 mm to 7 mm, a maximum length of 1 mm to 7 mm, and 0.1 mm. Embossed so as to have a shape having a concavo-convex structure 20 having a convex portion 1 having a height of ˜3.0 mm and a convex surface area of 1.0 mm ² to 36 mm ² and capable of producing a contrast effect due to light contrast. The basic structure includes applying the adhesive to a thickness of 0.03 mm to 0.1 mm on one or both surfaces of the embossed substrate layer 11 to form the adhesive layer 14.

Instead of forming the pressure-sensitive adhesive layer 14 after embossing the base material layer 11, a thickness of 0.005 mm to 0.02 mm is provided on one or both surfaces of the surface of the base material layer 11 before embossing. And a coloring layer 12 having an insect attracting color and / or a protective layer 13 having a thickness and water resistance of 0.005 mm to 0.02 mm are laminated to form the base material layer 11 and the coloring layer 12 and / or protection. A laminate having a layer 13 is formed, and this laminate is spaced from 1 mm to 7 mm, 1 mm to 7 mm in maximum length, 0.1 mm to 3.0 mm in height, and 1.0 mm ² to 36 mm ² in convex area. The embossing is carried out so as to have a concavo-convex structure 20 having the convex portion 1 and capable of expressing a contrast effect due to light contrast, and an adhesive is applied on one or both surfaces of the embossed laminate. 0.03m Was applied to a thickness of ~ 0.1 mm to form an adhesive layer 14, may be obtained pest trapping adhesive sheet 10 by bonding a release material 15 on the adhesive of the adhesive layer 14. In the pest-capturing pressure-sensitive adhesive sheet 10 thus obtained, in addition to the one shown in FIG. 1B, a release material 15 is formed on the pressure-sensitive adhesive layer 14 to protect the pressure-sensitive adhesive surface.

In the present embodiment, as the base material layer 11, the colored layer 12, the protective layer 13, and the pressure-sensitive adhesive layer 14, those described above can be used, and general lamination methods are used for the respective lamination and formation methods. be able to. Also, as the release material 15, a widely used material such as release paper can be used.

The embossing used in the present embodiment is not particularly limited, and examples thereof include a method using an embossing roll with a heating device. Specifically, two metal embossing rolls, for example, two steel uneven embossing rolls, that is, a convex embossing roll in which the projections of a regular quadrangular pyramid are arranged uniformly, and a concave portion of the regular quadrangular pyramid are provided. Using an embossing roll with a heating device provided with the formed concave embossing roll and an electric heater built in each roll, the heating temperature (roll surface temperature) is set to 100 ° C. to 150 ° C., for example. The embossing is performed by passing the base material layer 11 before forming the pressure-sensitive adhesive layer 14 or the laminate comprising the base material layer 11, the coloring layer 12 and the protective layer 13 between the two embossing rolls described above. Can be mentioned.

Hereinafter, the adhesive sheet for capturing pests according to the present invention will be described in more detail using examples. Note that the present invention is not limited in any way by the following examples.

(Examples 1 to 4)
First, four types of pressure-sensitive adhesive sheets were produced as follows. That is, an attractive yellow paint (Dai Nippon Ink Co., Ltd .: XOS-1200) on the front and back surfaces of thick paper (Oji Paper Co., Ltd .: New Pigeon) having a thickness of 0.32 mm as the base material layer. Was printed and formed to a thickness of 10 μm, and then the substrate layer on which this colored layer was formed was used at 120 to 130 ° C. using an embossing roll with a heating device (Emboster 450 manufactured by Saito Engineering Co., Ltd.). Embossing was performed at a speed of 8 m / min at a temperature, and four types of pressure-sensitive adhesive sheets having different dimensions (intervals, maximum lengths, heights) of the convex portions of the regular quadrangular prism-shaped uneven structure were produced. Next, an adhesive (hot melt adhesive: Shin Nippon Oil Co., Ltd .: Evertac SA-400E) was applied to a thickness of 50 μm with a hot melt coating machine (Dynatech Co., Ltd .: hot melt coating machine). In this case, the adhesive was applied to the base material layer in advance at a viscosity of around 140 ° C. to 500 mpas to 600 mPas, and while adjusting the coating amount, it was directly applied in a fiber shape to form an adhesive layer. . Then, release paper was stuck on the surface of the adhesive layer. Four types (Examples 1 to 4) of pest-capturing pressure-sensitive adhesive sheets were produced by making the size of the pressure-sensitive adhesive sheet into a strip of 100 mm × 250 mm. These pest-capturing adhesive sheets were installed for 10 days in a tomato house in Ebina City with the release paper peeled off, and a test was conducted to confirm the number of whiteflies captured. The results are shown in Table 1. In addition, the number of insect pests indicates the number of whitefly and tobacco whitefly.

(Comparative Examples 1 to 3)
Further, as Comparative Examples 1 and 2, a pest-capturing pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that the dimensions (interval, maximum length, height) of the convex portions of the concavo-convex structure were changed. Furthermore, a pest-capturing pressure-sensitive adhesive sheet of Comparative Example 3 was produced in the same manner as in Example 1 except that the same thick paper flat plate printed in the same yellow color was used as the base material layer. These pest-capturing adhesive sheets were installed for 10 days in a tomato house in Ebina City with the release paper peeled off, and a test was conducted to confirm the number of whiteflies captured. The results are shown in Table 1. The number of pests captured indicates the number of whitefly and tobacco whitefly.

From Table 1, the pest trapping adhesive sheets of Examples 1 to 4 have a good balance of light contrast of light on the adhesive surface of the adhesive layer, and thus have a large number of captures and are excellent in capturing ability. I understand. On the contrary, the Pest Capture Adhesive Sheets of Comparative Examples 1 and 2 are out of balance in the contrast of light contrast on the adhesive surface of the adhesive layer, and the Pest Capture Adhesive Sheet of Comparative Example 3 is an adhesive. It can be seen that the number of captures is small because the contrast of light on the adhesive surface of the agent layer is not formed.

(Examples 5 to 9 and Comparative Examples 4 to 6)
Of the adhesive sheets for capturing pests of Examples 1 to 4, the distance between the convex portions × the maximum length is 4 mm × 4 mm (the area of the convex surface is 16 mm ² ). Since it showed, the space | interval x convex length of a convex part was fixed to 4 mm x 4 mm, and the influence of the height of a convex part was examined. Specifically, Example 3 except that the height of the convex shape is adjusted by applying a soldering agent to the surface of the convex roll of the above-described embossing machine to obtain a convex portion having a predetermined height. In the same manner, adhesive sheet for capturing pests of Examples 5 to 9 and Comparative Examples 4 to 5 were prepared. Furthermore, the pest-capturing pressure-sensitive adhesive sheet of Comparative Example 6 was produced in the same manner as in Example 3 except that the same thick paper flat plate printed in the same yellow color was used as the base material layer. Comparative Example 6 is the same as Comparative Example 3. These pest-capturing adhesive sheets were installed for 10 days in a tomato house in Ebina City with the release paper peeled off, and a test was conducted to confirm the number of whiteflies captured. The results are shown in Table 2. In addition, the number of insect pests indicates the number of whitefly and tobacco whitefly.

From Table 2, it was found that there was a maximum number of captures when the height of the convex portion was around 1.2 mm. When the dimension of the convex part (interval × maximum length) is 4 mm × 4 mm and the height of the convex part is lower than 0.3 mm as in Comparative Example 5, light irradiation illuminates the concave part brightly. It becomes clear that the contrast of light and darkness of light becomes unclear, and the contrast is not much different from the case of a flat plate, and the attractiveness of pests is reduced. Further, when the height of the convex portion exceeds 1.8 mm as in Comparative Example 4, the dull darkness of the concave portion disappears, the number of considerably dark portions increases, and the mosaic pattern of the bright and dark portions of the light contrast Becomes too clear, and the attractiveness of pests is reduced. When the height of the convex part where the capture of the pest is maximum is around 1.2 mm, the light entering the concave part is in a dim light, and the contrast of light contrast between the surface of the convex part and the valley of the concave part It turns out that it is in the optimal state to attract. Furthermore, if the height of the convex portion exceeds 2.2 mm, the size of the insects of the whitefly is about 1 mm, so the chance that the rear leg of the pest contacts the adhesive surface of the concave portion is extremely reduced, and the adhesive surface of the concave portion is reduced. It was also found that the number of insect pests fell because they were not captured.

(Evaluation of selective capture of pests)
In order to evaluate the pest selective capture property (property capable of selectively capturing only pests without capturing beneficial insects) for the adhesive sheets for capturing pests of Examples 1 to 10 and Comparative Examples 1 to 6 The above-mentioned adhesive sheet for capturing pests was left to stand for 2 weeks in a 300-tsubo tomato house where 80 beneficial insects (bumblebees) were removed. Table 3 shows the number of bumblebees captured.

From Table 3, it can be seen that by reducing the area (interval x maximum length) where the rear legs of the bumblebee contact the adhesive surface, the bumblebee can easily escape from the adhesive surface and reduce the number of captures. . That is, the size of the rear leg of the bee ranges from 7 mm to 15 mm from a small honey bee to a large bumblebee, and the dimension of the convex part of the adhesive sheet for capturing pests of Examples 1 to 4 shown in Table 3 (Same for the dimensions of the recesses) The distance and the maximum length are 3 mm to 4 mm, so that the contact area is 1/2 to 1/3 of the length of the rear leg (adhesion applied to the rear leg). The force also becomes 1/2 to 1/3), and it can be seen that it is easy to escape from the adhesive surface.

Claims

It has a thickness of 0.03 mm to 0.5 mm and has an interval of 1 mm to 7 mm, a maximum length of 1 mm to 7 mm, a height of 0.1 mm to 3.0 mm and a convex surface area of 1.0 mm 2 to 36 mm 2 . A base material layer having a concavo-convex structure having a convex portion and capable of expressing a contrast effect due to light contrast, and an adhesive layer formed on the base material layer to a thickness of 0.03 mm to 0.1 mm. Equipped with an adhesive sheet for capturing pests.
2. A colored layer having a thickness of 0.005 mm to 0.02 mm and an attracting color for attracting insects and having the concavo-convex structure between the base material layer and the pressure-sensitive adhesive layer. An adhesive sheet for capturing pests as described in 1.
The pest trap according to claim 2, further comprising a protective layer having a thickness of 0.005 mm to 0.02 mm and water resistance and having the concavo-convex structure between the colored layer and the pressure-sensitive adhesive layer. Adhesive sheet.
The pressure-sensitive adhesive layer, the colored layer and the pressure-sensitive adhesive layer, or the colored layer, the protective layer and the pressure-sensitive adhesive layer are formed on one surface or both surfaces of the base material layer. An adhesive sheet for capturing pests as described in 1.
The pest-capturing pressure-sensitive adhesive sheet according to any one of claims 1 to 4, further comprising a release material on the surface of the pressure-sensitive adhesive layer.
The pressure-sensitive adhesive sheet for capturing pests according to any one of claims 1 to 5, which has a strip shape or a roll shape.
A base material layer having a thickness of 0.03 mm to 0.5 mm is provided with an interval of 1 mm to 7 mm, a maximum length of 1 mm to 7 mm, a height of 0.1 mm to 3.0 mm, and a height of 1.0 mm 2 to 36 mm 2 . Embossing to have a shape with a concavo-convex structure that can produce a contrast effect due to light contrast, with a convex part of the convex surface area,
Production of pressure-sensitive adhesive sheet for trapping pests, comprising forming a pressure-sensitive adhesive layer by applying a pressure-sensitive adhesive to a thickness of 0.03 mm to 0.1 mm on one or both surfaces of the embossed substrate layer Method.
A colored layer having a thickness of 0.005 mm to 0.02 mm and an insect attracting color and / or a thickness of 0.005 mm to 0.02 mm on one or both surfaces of the surface of the base material layer before embossing A protective layer having thickness and water resistance is laminated to form a laminate having the base material layer and the colored layer and / or protective layer, and the laminate has a maximum length of 1 mm to 7 mm, an interval of 1 mm to 7 mm. It is, having a convex portion of the convex area of the high and 1.0 mm 2 ~ 36 mm 2 of 0.1 mm ~ 3.0 mm, embossed as a shape having an uneven structure capable of expressing a contrast effect by light and shade The pest according to claim 7, wherein the pressure-sensitive adhesive layer is formed by applying a pressure-sensitive adhesive to a thickness of 0.03 mm to 0.1 mm on one surface or both surfaces of the processed and embossed laminate. Production method of capture adhesive sheet .