Adhesive tape for trapping pests

Abstract

To provide an adhesive tape for capturing insect pest which includes an adhesive layer for capturing insect on one surface of a base material, and can capture all insect pests that intrude from the outside of a manufacturing environment and manufacturing apparatus and have the body length of 1 mm to several tens mm.SOLUTION: There is provided an adhesive tape for capturing insect pest in which an adhesive layer for capturing insect is formed on one surface of a base material, an adhesive layer for sticking and fixing to a floor, wall or the like is formed on the other surface, a portion in which the adhesive layer for capturing insect does not exist continuously along at least one edge in the longitudinal direction is provided with the width of 3-20 mm, and the total thickness of the edge where the adhesive layer for capturing insect does not exist, namely the total thickness of the adhesive layer for fixing and the base material is equal to or less than 85 μm.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an adhesive tape for capturing pests, which has an adhesive layer for capturing insects formed on one side of a base material and an adhesive layer for attaching and fixing to floors, walls, etc. on the other side. Despite its extremely simple structure, it is able to capture all pests of various sizes, from just under 1 mm to several tens of mm in body length, that attempt to invade manufacturing environments or manufacturing equipment from the outside. [Background technology]

[0002] In recent years, insect contamination incidents have become an increasing problem in the manufacturing and food industries. Once an incident occurs, the information spreads quickly on television, radio, and social media, resulting in a significant loss of reputation for the company and potentially jeopardizing its business operations. To prevent insect contamination, companies have implemented various measures at factories and manufacturing sites, the most common of which are spraying insecticides and installing insect traps. Insecticides are highly effective, but they have problems such as short-lasting effects and environmental pollution. Therefore, particularly near manufacturing facilities, insect traps that combine adhesive sheets with light attractants or leaf-type insect traps are often used (see Patent Documents 1 and 2, etc.).

[0003] The single-leaf insect-trapping adhesive sheet comprises a sheet-shaped substrate and an adhesive layer made of an adhesive composition formed on the substrate, and traps insects using the adhesive layer formed on the substrate. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-84957 [Patent Document 2] Patent No. 5854362 [Patent Document 3] Japanese Patent Application Laid-Open No. 2008-271932 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventional insect trapping adhesive sheets and insect traps such as those described in Patent Documents 1 and 2 are limited to localized installation, and as a result, although they are effective for monitoring to investigate the occurrence of pests, they cannot be installed without exception along the entry routes from the outside into the manufacturing environment or manufacturing equipment, and as a result, they are insufficient to prevent pests from entering from the outside. Furthermore, as in Patent Document 3, some adhesive insect trapping tapes are available in roll form, but because they are only about 10 m long and the tape is narrow, jumping pests such as springtails can jump over the trapping sheet, and fast-moving pests such as cockroaches can pass over the trapping sheet, thereby invading the manufacturing environment or manufacturing equipment. Furthermore, for ease of handling, typical adhesive insect trapping sheets have a thickness of 100 μm or more at the edges, and many do not have an adhesive layer on the back for fastening to floors or walls. However, it has been confirmed that tiny walking pests, such as booklice with a body length of around 1 mm, often do not crawl onto the sheet if the edge thickness of the sheet is greater than a certain amount relative to their body length. It has also been confirmed that if the sheet is not fastened to a floor or wall, tiny walking pests can sometimes enter through the gap between the sheet and the floor or wall. In other words, conventional adhesive insect trapping sheets were not always able to adequately capture pests.

[0006] Therefore, the object of the present invention is to provide an adhesive tape for capturing pests that solves the various problems of the prior art described above, has an extremely simple structure, and is capable of capturing all pests of various sizes, ranging from just under 1 mm to several tens of mm in body length, that attempt to invade a manufacturing environment or manufacturing equipment from the outside. [Means for solving the problem]

[0007] The above object is achieved by the present invention, which provides an adhesive tape for capturing pests, characterized in that an insect-trapping adhesive layer is formed on one surface of a substrate, and an adhesive layer for attaching and fixing to a floor, wall, etc. is formed on the other surface, and a continuous area free of the insect-trapping adhesive layer is provided along at least one longitudinal edge with a width of 3 to 20 mm, and the total thickness of the edge free of the insect-trapping adhesive layer, i.e., the combined thickness of the fixing adhesive layer and the substrate, is 85 μm or less. [size]

[0008] The adhesive tape of the present invention is not in sheets, but has a longitudinal length of 1 m to 200 m, is wound in roll form on a plastic core, and is used by unwinding the required length according to the installation location and cutting it in the width direction of the substrate. For example, by applying the adhesive tape for capturing pests of the present invention all around the floor and walls, such as surrounding a manufacturing facility, it is possible to completely block the entry routes of pests.

[0009] As a result of installation verification, it was confirmed that springtails, which have a habit of jumping, could jump up to 70 mm from the edge of the tape. It was also confirmed that cockroaches, which are insects commonly found in the environment and have a fast walking speed, could pass over the tape if the tape width was 40 mm. Based on these results, the width of the tape of the present invention is set to 80 mm or more, and, taking into consideration the ease of attaching and fixing to floors and walls, and the weight when carrying it, it is set to 200 mm or less. [Base material]

[0010] The substrate constituting the adhesive tape of the present invention can be a conventionally known plastic film. For example, films made of polyvinyl chloride resin, polyester resin, polypropylene resin, polyethylene resin, polyamide resin (Nylon: registered trademark), etc. are preferred. However, from the viewpoint of dust generation, the use of a paper substrate is avoided.

[0011] The thickness of the substrate is generally 20 μm or more for ease of production and installation of the pressure-sensitive adhesive tape of the present invention, and the total thickness including the adhesive layer on the side fixed to the floor or wall does not exceed 85 μm, more preferably 25 to 70 μm. [Insect trapping adhesive layer]

[0012] The adhesive used to form the insect-trapping adhesive layer is not particularly limited, and any adhesive such as acrylic, rubber, hot melt, emulsion, or silicone adhesive can be used. Any adhesive that maintains a viscous state and makes it easy to capture pests that land on the adhesive layer, such as those used to form insect-trapping adhesive layers in the conventional technologies mentioned above, can be used as appropriate.

[0013] The adhesive layer for trapping insects must not contain any insect repellents, insecticides, repellents or attractants, in order to prevent them from adversely affecting the safety of products made in manufacturing environments for foods and pharmaceuticals that require strict hygiene control, or from contaminating the products by attracting insects. In order to prevent deterioration of insect trapping performance over time and odor, it is preferable to minimize residual moisture and solvents during the tape manufacturing process. The adhesive may be dissolved in a solvent when applied, but it is preferable to thoroughly dry the adhesive layer after application to minimize residual solvent.

[0014] The insect trapping adhesive layer must be designed to achieve a cleanliness level of at least US Federal Standard Class 10,000 when used alone in a clean room. It must not contain any dust-generating components, such as powder.

[0015] In order to stably capture pests of various sizes, shapes, and movement speeds, the insect trapping adhesive layer must have a ball number of 8 or more when measured using the inclined ball tack test method (at a 30° inclination angle) in accordance with JIS Z0237. This ball tack test number is a value that serves as an indicator of the instantaneous adhesiveness of the adhesive layer, and if this number is low, pests will often escape without being captured even if they come into contact with the layer for a moment.

[0016] The method for applying the adhesive to the substrate to form the insect trapping adhesive layer is not particularly limited, and any conventionally known application device can be used, including, for example, a method using an application device such as a knife coater, roll coater, roll knife coater, air knife coater, bar coater, die coater, curtain coater, gravure coater, etc. Alternatively, a method can be used in which the application device is used to apply the adhesive to the release-treated surface of the insect trapping adhesive-side release paper described below to form an adhesive layer, and then the substrate is laminated onto this adhesive layer. The thickness of the adhesive layer is preferably 15 to 50 μm to prevent adhesion of glue to the lower part of the device when it is installed on a wall or the like due to glue flow over time while maintaining insect trapping performance.

[0017] When forming the insect-trapping adhesive layer, a continuous area of ​​3 to 20 mm wide is left uncoated along at least one edge in the longitudinal direction to provide a portion where no adhesive layer is formed. This edge does not have an insect-trapping adhesive layer, so it only has a fixing adhesive layer and a base material. By making the combined thickness of the base material and fixing adhesive layer 85 μm or less, it becomes easier for tiny crawling pests to crawl up, dramatically improving insect trapping performance. The adhesive tape for trapping pests of the present invention is installed so that the edge on the side without the adhesive layer for trapping insects faces the outside of the manufacturing environment or manufacturing equipment. Furthermore, it is preferable to leave both longitudinal edges uncoated, as this prevents glue from seeping out from the end of the tape and sticking to hands or the surrounding area, and eliminates the need to pay attention to the direction in which the tape is fixed. [Release paper on adhesive side for insect trapping]

[0018] The insect trapping adhesive layer used in the present invention is configured to have a release paper laminated thereon, and the release paper is peeled off to expose the insect trapping adhesive layer during use. This configuration effectively prevents the insect trapping adhesive layer from sticking to hands when the pest trapping adhesive tape of the present invention is attached to a floor or wall.

[0019] The release paper for the insect trapping adhesive layer side used in the present invention can be a plastic film with at least one surface treated for release properties. Examples of plastic films include those made of vinyl chloride resin, polyester resin, polypropylene resin, polyethylene resin, and polyamide resin (Nylon: registered trademark). Considering ease of peeling, the thickness of the release paper is preferably about 20 μm to 200 μm. Note that the use of paper release paper that generates dust should be avoided.

[0020] The surface of the release paper that comes into contact with the insect-trapping adhesive layer must be smooth, specifically with a surface roughness Ra of 0.1 μm or less. If the surface is uneven, the shape of the release paper will be transferred to the insect-trapping adhesive layer when the release paper is peeled off, causing the surface to become rough, making it very difficult to see the tiny pests that have been captured.

[0021] When peeling the release paper from the insect trapping adhesive layer, if the peeling force is too strong, the fixing adhesive layer may lift or peel off from the floor, wall, etc. Therefore, specifically, the peeling force of the release paper from the insect trapping adhesive layer is set to 0.05 N / cm or less. [Adhesive layer for fixing]

[0022] The adhesive tape for trapping pests of the present invention has an adhesive layer formed over the entire surface of the substrate, i.e., the entire width and length, on the other side of the tape opposite the side on which the adhesive layer for trapping insects is formed, for attaching and fixing the tape to a floor, wall, etc. It has been confirmed that when the tape is not fixed to a floor or wall, or when only a portion of the tape is fixed, there are cases where minute walking pests enter the tape through gaps between the tape and the floor or wall.

[0023] The adhesive layer for fixing uses a urethane adhesive, which has excellent air release properties when fixing to floors, walls, etc., is removably removable, and prevents adhesive residue when removing from floors, walls, etc. The insect trapping tape made by another manufacturer used an acrylic adhesive for the adhesive layer for fixing, but when the tape was removed from the epoxy resin floor one month after installation, adhesive residue was left behind.

[0024] As with the insect trapping adhesive, the adhesive layer for fixing does not contain any insect repellents, insecticides, repellents or attractants, in order to prevent them from adversely affecting the safety of the product or attracting insects and thereby contaminating the product. In order to prevent deterioration of insect trapping performance over time and odor, it is preferable to minimize residual moisture and solvents during the tape manufacturing process. The adhesive may be dissolved in a solvent when applied, but it is preferable to thoroughly dry the adhesive layer after application to minimize residual solvents in the adhesive layer.

[0025] Like the insect trapping adhesive layer, the fixing adhesive layer must be designed to achieve a cleanliness level of at least US Federal Standard Class 10,000 when used alone in a clean room. For example, it must not contain any dust-generating components such as powder.

[0026] In order to be able to attach to floors and walls of various shapes and materials, and to prevent the adhesive tape itself from peeling off when the release paper laminated to the insect-trapping adhesive layer is peeled off, the 180° peel adhesive strength of the adhesive layer against SUS (in accordance with JIS Z0237) must be 0.2 N / cm or more. Most common removable adhesives have an adhesive strength of 0.1 N / cm or less, which means that while they can be attached to epoxy resin floors, for example, they can easily fall off when attached to rough-coated walls.

[0027] The method for applying the adhesive to the substrate to form the fixing adhesive layer is not particularly limited, and a conventionally known application device can be used, for example, a method using an application device such as a knife coater, a roll coater, a roll knife coater, an air knife coater, a bar coater, a die coater, a curtain coater, a gravure coater, etc. Alternatively, a method can be used in which the above-mentioned application device is used to apply the adhesive to the release-treated surface of the fixing adhesive layer release paper described below to form an adhesive layer, and then the substrate is laminated onto this adhesive layer. The thickness of the adhesive layer for fixing is not particularly limited, but the thickness including the base material must not exceed 85 μm. In order to ensure adhesive strength with the fixing surface, the thickness is preferably 15 to 60 μm. [Fixing adhesive layer side release paper]

[0028] It is preferable that the adhesive layer for fixing is laminated with a release paper, and the release paper is peeled off to expose the adhesive layer for fixing when in use. This configuration makes it easier to apply the adhesive tape for trapping insects of the present invention.

[0029] The release paper on the fixing adhesive layer side used in the present invention can be a plastic film with at least one surface treated for release properties. Examples of plastic films include those made of vinyl chloride resin, polyester resin, polypropylene resin, polyethylene resin, and polyamide resin (Nylon: registered trademark). Considering ease of peeling, the thickness of the release paper is preferably about 20 μm to 200 μm. Note that the use of paper release paper that generates dust should be avoided. Furthermore, by subjecting both sides of the release paper on the insect trapping adhesive layer side to a release treatment, the release paper on the fixing adhesive side may be wound over the release paper on the insect trapping adhesive layer side without being laminated. [Tape core]

[0030] The core around which the long product is wound can be made of plastic, such as polyvinyl chloride resin, polyester resin, polystyrene resin, ABS resin, polycarbonate resin, polypropylene resin, polyethylene resin, polyamide resin (Nylon: registered trademark), etc. Dust-generating cores, such as those made of paper, should not be used. The size of the core to be used may be determined in terms of length and diameter depending on the width of the adhesive tape. [Brief explanation of the drawings]

[0031] [Figure 1] FIG. 2 is a side view of the adhesive tape for trapping pests. [Figure 2] FIG. 1 is a plan view of an adhesive tape for trapping pests. [Figure 3] FIG. 1 is a perspective view of an adhesive tape for trapping pests. [Figure 4] 1 shows the results of insect trapping performance evaluation in the examples. [Example]

[0032] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. The performance of the pressure-sensitive adhesive tapes obtained in each example was evaluated according to the methods described below. (1) Inclined ball tuck The adhesive strength of the insect trapping adhesive layer was evaluated by a ball tack test (inclination angle 30°) in accordance with JIS Z 0237. More specifically, a test piece was cut to a width of 15 mm and a length of 300 mm, and then the test piece was fixed to an inclined table with an inclination angle of 30° in an environment of 23°C by peeling off the release paper on the fixing adhesive layer side, and then peeling off the release paper on the insect trapping adhesive layer side. Next, a stainless steel ball was rolled on the insect-trapping adhesive layer according to the method described in JIS Z 0237. The number of the largest ball among the balls that stopped on the adhesive layer was recorded as the ball number. (2) Insect trapping performance The test pieces were cut to a width of 100 mm and a length of 200 mm, and then Examples 1 to 4 and Comparative Examples 1 to 6 were placed at three locations in a clean room. The release paper on the adhesive layer side for fixing was peeled off, and the pieces were lined up in a straight line on the floor and fixed in place. The release paper on the adhesive layer side for trapping the insects was then peeled off, and the number of psocids caught over a 26-day period was counted visually.

[0033] Example 1 A 38 μm-thick polyethylene terephthalate (PET) film was used as the substrate. One side was laminated with a 33 μm thick layer of polyisobutylene (A) adhesive as the insect trapping adhesive layer, and a 25 μm thick PET film with release properties was attached on top of that as the release liner for the insect trapping adhesive layer. When laminating the insect trapping adhesive layer, a 5 mm width of the longitudinal edge of the tape was left uncoated. A 20 μm thick layer of urethane adhesive was laminated on the other side of the substrate as the fixing adhesive layer, and a 25 μm thick PET film with release properties was attached on top of that as the release liner for the fixing adhesive layer. The adhesive tape was then fabricated and its insect trapping performance was evaluated. The results are shown in Figure 4. Example 2 An adhesive tape was produced in the same manner as in Example 1, except that a PET film with a thickness of 50 μm was used, and the insect trapping performance was evaluated. The results are shown in FIG. Example 3 An adhesive tape was produced in the same manner as in Example 1, except that a polyisobutylene (B) adhesive was used for the insect-trapping adhesive layer, and the insect-trapping performance was evaluated. The results are shown in Figure 4. Example 4 An adhesive tape was produced in the same manner as in Example 1, except that a 50 μm-thick PET film and a polyisobutylene (B) adhesive were used for the insect-trapping adhesive layer, and the insect-trapping performance was evaluated. The results are shown in Figure 4.

[0034] Comparative Example 1 An adhesive tape was produced in the same manner as in Example 1, except that no uncoated portion was formed on the longitudinal edge portion, and the insect trapping performance was evaluated. The results are shown in Figure 4. Comparative Example 2 An adhesive tape was produced in the same manner as in Example 1, except that a 50 μm thick PET film was used and no uncoated areas were formed on the longitudinal edges, and the insect trapping performance was evaluated. The results are shown in Figure 4. Comparative Example 3 An adhesive tape was produced in the same manner as in Example 1, except that a polyisobutylene (B) adhesive was used for the insect-trapping adhesive layer and no uncoated areas were formed on the longitudinal edges, and the insect-trapping performance was evaluated. The results are shown in Figure 4. Comparative Example 4 An adhesive tape was produced in the same manner as in Example 1, except that a 50 μm-thick PET film and a polyisobutylene (B) adhesive were used for the insect-trapping adhesive layer and no uncoated areas were formed on the longitudinal edges, and the insect-trapping performance was evaluated. The results are shown in Figure 4. Comparative Example 5 An adhesive tape was produced in the same manner as in Example 1, except that a 150 μm thick PET film and a polyisobutylene (C) adhesive were used for the insect-trapping adhesive layer, and the insect-trapping performance was evaluated. The results are shown in Figure 4. Comparative Example 6 An adhesive tape was produced in the same manner as in Example 1, except that a strong acrylic adhesive was used for the insect-trapping adhesive layer, and the insect-trapping performance was evaluated. The results are shown in Figure 4.

[0035] As is clear from Figure 4, the adhesive tapes for capturing pests of the present invention (Examples 1 to 4), which have a total edge thickness of 85 μm or less, have high psocid catching performance, whereas the adhesive tapes of Comparative Examples 1 to 6, which have a total edge thickness of more than 85 μm, have insufficient psocid catching performance. [Industrial Applicability]

[0036] The adhesive tape for capturing pests of the present invention can capture all pests of a wide range of sizes, from just under 1 mm to several tens of mm in body length, and does not contain any insect repellents, insecticides, repellents, or attractants, and does not generate dust.Therefore, it can be used favorably as an adhesive tape for capturing and exterminating pests that invade from outside in manufacturing sites for food, pharmaceuticals, etc., where strict hygiene control is required.

Claims

1. This adhesive tape for capturing pests is characterized in that an adhesive layer for capturing insects is formed on one surface of a substrate, an adhesive layer for attaching and fixing to a floor, wall, etc. is formed on the other surface, a portion free of the adhesive layer for capturing insects is continuously provided along at least one edge in the longitudinal direction with a width of 3 to 20 mm, and the total thickness of the edge free of the adhesive layer for capturing insects, i.e., the combined thickness of the adhesive layer for attaching and fixing and the substrate, is 85 μm or less.

2. 2. The adhesive tape for trapping pests according to claim 1, which is wound into a roll having a width of 80 mm to 200 mm and a longitudinal length of 1 m to 200 m.

3. 3. The adhesive tape for trapping insects according to claim 1, wherein the adhesive layer for attachment and fixing is formed over the entire surface of the substrate, i.e., over the entire width and length, and has an adhesive strength of 0.2 N / cm or more.

4. 3. The adhesive tape for trapping insects according to claim 1, wherein the adhesive layer for attachment uses a urethane-based adhesive.

5. 3. The adhesive tape for trapping insects according to claim 1, wherein the adhesive layer for trapping insects has a ball number of 8 or more as measured by an inclined ball tack test method (inclination angle 30°) in accordance with JIS Z0237.

6. 3. The adhesive tape for trapping insects according to claim 1 or 2, wherein a release paper is laminated on the adhesive layer for trapping insects, the surface in contact with the adhesive layer for trapping insects has a surface roughness Ra of 0.1 μm or less, and the peel strength from the adhesive layer for trapping insects is 0.05 N / cm or less.

7. 3. The adhesive tape for trapping insects according to claim 1, wherein the adhesive layer for trapping insects and the adhesive layer for attaching and fixing the insects do not contain any insect repellent, insecticide, repellent or attractant.

8. 3. The adhesive tape for trapping pests according to claim 1 or 2, which can achieve a cleanliness level of Federal Standard Class 10,000 or higher when used alone in a clean room.

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