Anti-pest and insect sheet

Abstract

To make it possible to prevent the intrusion of pests and insects by simple means.SOLUTION: Nonwoven fabric 1 is impregnated with microcapsules 2 encapsulating capsaicinoids 21, which are mixed into acrylic resin 3. It is preferable that the average particle size of the microcapsules 2 is 15 μm or more and 25 μm or less, and the impregnation is performed such that the content ratio of capsaicinoids 21 becomes 3.0 mass% or more and 6.0 mass% or less. It is also preferable that the nonwoven fabric 1 is a spunbond nonwoven fabric containing polyester fibers and is of A4 size.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an animal and insect repellent sheet. [Background technology]

[0002] For example, if a cable for communication, power supply, etc. is bitten by a rat or other vermin or insect, the cable may break, causing a disruption to communication, power supply, etc. In order to prevent bites by such vermin or insects, for example, a cable is known that has a protective layer in its coating to protect the cable from bites by vermin or insects (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-174552 A Summary of the Invention [Problem to be solved by the invention]

[0004] Although the use of a cable with such a protective layer can prevent damage from pests and insects in the area where the cable is used, this requires replacement of the cable, and replacing cables in existing facilities requires large-scale construction, which is often undesirable in terms of cost, construction time, etc. Therefore, in order to prevent bites by vermin and pests without replacing cables, it is possible to make it more difficult for vermin and pests to enter specific areas where it is desired to prevent the intrusion of vermin and pests, such as areas where cables are laid where bites by vermin and pests are likely to occur.However, doing so would require construction to fill in the gaps through which vermin and pests can enter, which, like replacing cables, requires large-scale construction work and is often undesirable in terms of cost, construction time, etc.

[0005] An object of the present invention is to make it possible to suppress the invasion of vermin and insects by simple means. [Means for solving the problem]

[0006] In order to solve the above problems, the invention described in claim 1 is an animal and insect repellent sheet, The nonwoven fabric is characterized by being impregnated with capsaicinoid.

[0007] The invention described in claim 2 is the animal and insect repellent sheet described in claim 1, The capsaicinoid is characterized in that it is encapsulated in microcapsules and impregnated into the nonwoven fabric.

[0008] The invention described in claim 3 is the animal and insect repellent sheet described in claim 2, The microcapsules are mixed with an acrylic resin and impregnated into the nonwoven fabric.

[0009] The invention described in claim 4 is the animal and insect repellent sheet described in claim 2, The microcapsules are characterized in that their average particle size is 15 μm or more and 25 μm or less.

[0010] The invention described in claim 5 is the animal and insect repellent sheet described in any one of claims 1 to 4, The composition is characterized in that it contains 3.0% by mass or more and 6.0% by mass or less of the capsaicinoid.

[0011] The invention described in claim 6 is the animal and insect repellent sheet described in any one of claims 1 to 4, The nonwoven fabric is characterized by containing polyester fibers.

[0012] The invention described in claim 7 is the animal and insect repellent sheet described in any one of claims 1 to 4, The nonwoven fabric is characterized in that it is a spunbond nonwoven fabric.

[0013] The invention described in claim 8 is the animal and insect repellent sheet according to any one of claims 1 to 4, The nonwoven fabric is characterized in that it has a rectangular shape with short sides of 150 mm or more and 250 mm or less and long sides of 250 mm or more and 350 mm or less.

[0014] The invention described in claim 9 is the animal and insect repellent sheet described in claim 8, The nonwoven fabric is characterized by being A4 size.

[0015] The invention described in claim 10 is the animal and insect repellent sheet according to any one of claims 2 to 4, The capsaicinoid is characterized in that the capsaicinoid is encapsulated in microcapsules of a plurality of strengths and impregnated into the nonwoven fabric.

[0016] The invention described in claim 11 is the animal and insect repellent sheet according to any one of claims 1 to 4, The nonwoven fabric is characterized in that the content of the capsaicinoid varies depending on the portion of the nonwoven fabric.

[0017] The invention described in claim 12 is the animal and insect repellent sheet described in claim 11, The composition is characterized by comprising a first portion containing the capsaicinoid at a first concentration and a second portion containing the capsaicinoid at a second concentration higher than the first concentration. Effect of the Invention

[0018] According to the present invention, it is possible to suppress the invasion of vermin and insects using simple means. [Brief description of the drawings]

[0019] [Figure 1] 1 is a perspective view showing an animal- and insect-repellent sheet according to an embodiment, in which the thickness of the sheet is exaggerated compared to the actual thickness. [Diagram 2] 1 is a cross-sectional view showing an animal- and insect-repellent sheet according to an embodiment. [Diagram 3] FIG. 2 is a cross-sectional view of microcapsules impregnated in an animal- and insect-repellent sheet according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an animal- and insect-repellent sheet 100 according to an embodiment of the present invention will be described with reference to the drawings. However, the technical scope of the present invention is not limited to the illustrated examples. In this specification, any numerical range stated using "to" is intended to include the numerical values ​​before and after it as the lower limit and upper limit.

[0021] [1 Configuration Description] First, the configuration of the animal- and insect-repellent sheet 100 will be described.

[0022] 1 and 2, the animal / insect repellent sheet 100 is formed by impregnating a rectangular nonwoven fabric 1 with microcapsules 2 mixed in an acrylic resin 3. Regardless of the method, as long as the microcapsules 2 are embedded between the fibers of the nonwoven fabric 1, the microcapsules 2, and by extension the capsaicinoid 21 encapsulated in the microcapsules 2, are considered to be impregnated into the nonwoven fabric 1.

[0023] [(1) Nonwoven fabric] The nonwoven fabric 1 is a nonwoven fabric produced by bonding predetermined fibers together by well-known techniques such as spunlace, air-through, airlaid, point bond, spunbond, needle punch, etc. In this case, it is preferable to use a spunbond nonwoven fabric in which polyester fibers made of polyester such as polyethylene terephthalate (PET) are spun into a sheet shape by spunbonding.

[0024] The size of each sheet of nonwoven fabric 1 is preferably a rectangle with short sides of 150 to 250 mm and long sides of 250 to 350 mm, and is particularly preferably A4 size (a rectangle with short sides of 210 mm and long sides of 297 mm).

[0025] The weight of the nonwoven fabric 1 is 30 g / m2 ~50g / m 2 It is preferable that the thickness is 40 g / m 2 It is particularly preferable that the basis weight is the basis weight measured in accordance with JIS P8124:2011.

[0026] Furthermore, the nonwoven fabric 1 may be individually formed to the above size, or a long nonwoven fabric may be perforated and rolled so that the size when cut along the perforations is the above size. In the former case, many vertically stacked animal and insect repellent sheets 100 are pulled out one by one from the top and used, and in the latter case, animal and insect repellent sheets 100 pulled out from the outer or central end of the roll are cut along the perforations to the above size per sheet for use. In the latter case, the size of the nonwoven fabric 1 when cut along the perforations is the size of the nonwoven fabric 1.

[0027] [(2) Microcapsules] As shown in Fig. 3, the microcapsules 2 are minute capsule-like members formed by encapsulating capsaicinoid 21 by coating with a membrane 22 made of a membrane material such as ethyl cellulose, polyvinyl alcohol, gelatin, alginic acid, etc. The average particle size of the microcapsules 2 is preferably 15 to 25 µm. In addition, it is particularly preferable that the membrane material is a melamine resin.

[0028] The capsaicinoid 21 encapsulated in the microcapsule 2 is capsaicin, the spicy component of chili peppers, or a homologue thereof, and in addition to capsaicin, for example, dihydrocapsaicin, nordihydrocapsaicin, homocapsaicin, homodihydrocapsaicin, etc. may be used, and a mixture of two or more of these may also be used. Furthermore, the capsaicinoid 21 encapsulated in the microcapsules 2 may be a natural substance extracted from chili peppers, or may be a chemically synthesized substance such as nonanoic acid vanillylamide (N-vanillylnonanamide).

[0029] Moreover, the microcapsules 2 are preferably impregnated into the nonwoven fabric 1 so that the content of the capsaicinoid 21 in the animal- and insect-repellent sheet 100 is 3.0 to 6.0 mass % relative to the mass of the animal- and insect-repellent sheet 100 .

[0030] [(3) Acrylic resin] The acrylic resin 3 is a polymer of an acrylic acid ester or a methacrylic acid ester.

[0031] In the animal / insect-repellent sheet 100, the microcapsules 2 are impregnated in a state where they are mixed with the acrylic resin 3. That is, as shown in Fig. 2, in the animal / insect-repellent sheet 100, the acrylic resin 3 is present around the microcapsules 2 located between the fibers of the nonwoven fabric 1, and the spaces between the fibers of the nonwoven fabric 1 are filled in part or in whole with the acrylic resin 3.

[0032] [2 Instructions for use] The animal and insect repellent sheet 100 of this embodiment is used by the user by rolling up each sheet and stuffing it into gaps leading to areas where it is desired to prevent the intrusion of vermin and pests, thereby filling the gaps. Depending on the size of the gap, roll up and stuff the animal and insect repellent sheets 100 one by one until the gap is completely filled.

[0033] [3 Explanation of effects] According to the animal / insect-repellent sheet 100 of this embodiment, the nonwoven fabric 1 is impregnated with the capsaicinoid 21. The nonwoven fabric 1 can be flexibly changed in shape by rolling it up, and when in a rolled state, a force acts on it to return it to its original shape, so that by rolling it up and stuffing it in, it is possible to easily fill gaps of various sizes as described above, and the capsaicinoid 21 has a repellent effect against many harmful animals and insects. Therefore, without requiring large-scale construction, etc., by simply rolling the material up and stuffing it into the gaps, it becomes difficult for vermin and insects to enter through the gaps. This makes it possible to use simple means to prevent the intrusion of vermin and insects into specific areas where it is desired to prevent the intrusion of vermin and insects, such as areas where cables are installed where there is a possibility of bites by vermin and insects.

[0034] In particular, when piping is provided for laying cables, gaps are likely to occur around the cables of the piping, which can easily become passageways for harmful animals and insects. Since many such gaps exist and the shapes and sizes of the gaps vary depending on the location, sealing them up has traditionally been very time-consuming, but the animal and insect repellent sheet 100 according to this embodiment can be used to accommodate gaps of any shape and size simply by rolling up and stuffing each sheet into place, making it possible to easily fill even gaps around the cables of such piping.

[0035] Furthermore, if capsaicinoid 21 is simply impregnated into nonwoven fabric 1, capsaicinoid 21 is likely to leak out when the sheet is exposed to wind and rain, but according to animal and insect repellent sheet 100 of this embodiment, capsaicinoid 21 is encapsulated in microcapsules 2 and impregnated into nonwoven fabric 1, so that capsaicinoid 21 is released only when a vermin or pest bites animal and insect repellent sheet 100. Therefore, capsaicinoid 21 is less likely to leak out before a vermin or pest bites, and the repellent effect of animal and insect repellent sheet 100 against vermin and pests can be maintained for a long period of time. In addition, since the capsaicinoid 21 is less likely to leak out when the user rolls up and packs the animal and insect repellent sheet 100, adverse effects such as skin inflammation caused by the capsaicinoid 21, which is an irritant, coming into contact with the user's hands are less likely to occur.

[0036] Furthermore, by impregnating the nonwoven fabric 1 with the microcapsules 2 mixed with the acrylic resin 3, the microcapsules 2 can be impregnated into the interior of the nonwoven fabric 1, and since the microcapsules 2 are fixed to the fibers of the nonwoven fabric 1 by the acrylic resin 3, the microcapsules 2 are less likely to leak out of the nonwoven fabric 1, and since the microcapsules 2 are protected by the acrylic resin and less likely to burst, the repellent effect of the animal and insect repellent sheet 100 against pests and vermin can be maintained for an even longer period of time. Furthermore, since the acrylic resin 3 has excellent weather resistance, the animal / insect-repellent sheet 100 is less likely to deteriorate or discolor even if it is left exposed to wind and rain for a long period of time.

[0037] Furthermore, when the average particle size of the microcapsules 2 is 15 to 25 μm, the microcapsules 2 can be easily impregnated between the fibers of the nonwoven fabric 1 .

[0038] Furthermore, by having the content of capsaicinoid 21 be 3.0 to 6.0 mass % relative to the mass of the animal / insect-repellent sheet 100, a sufficient repellent effect against pests and harmful insects can be obtained, and unnecessary increases in costs due to impregnation with excessive capsaicinoid 21 can be prevented.

[0039] Furthermore, since the nonwoven fabric 1 contains polyester fibers, the fibers constituting the nonwoven fabric 1 are less likely to deteriorate, and the animal / insect-repellent sheet 100 stuffed into the gaps is less likely to come off even after a long period of time.

[0040] Furthermore, since the nonwoven fabric 1 is a spunbond nonwoven fabric, the nonwoven fabric 1 has appropriate flexibility, which makes it easy to roll it up and stuff it into gaps.

[0041] Furthermore, if the nonwoven fabric 1 is too large, it becomes difficult to roll up the animal / insect-proofing sheet 100, particularly when done with one hand. If the nonwoven fabric 1 is too small, the volume of one sheet when rolled up is small, and a large number of animal / insect-proofing sheets 100 are required to fill in the gaps, increasing the amount of work required. In this regard, according to the animal / insect-proofing sheet 100 of this embodiment, the nonwoven fabric 1 is rectangular with short sides of 150 to 250 mm and long sides of 250 to 350 mm, and is particularly preferably A4 size, so that an appropriate balance can be maintained between the ease of rolling up the animal / insect-proofing sheet 100 and the large volume of one sheet when rolled up.

[0042] [4 Variations] Below, a modification of the above embodiment will be described.

[0043] [(1) Modification 1: Impregnation of multiple types of microcapsules] In the above description of the configuration, only one type of microcapsules 2 is impregnated into the nonwoven fabric 1. However, by changing the type of membrane material forming the membrane 22, the thickness of the membrane 22, etc., the microcapsules 2 containing capsaicinoid 21 may be impregnated with multiple types of microcapsules having different strengths.

[0044] In this case, for example, by rupturing the microcapsules in multiple stages, the situations in which the animal and insect repellent sheet 100 exerts its repellent effect against pests and vermin can be expanded, not just when a pest or vermin bites the animal and insect repellent sheet 100 after it has been stuffed into a gap. For example, by impregnating a material with both microcapsules of a strength such that they burst only when a vermin or pest bites into it, and microcapsules of a strength such that they burst sequentially after a specified period of time has passed, it is possible to obtain both the repellent effect of the former microcapsules when a vermin or pest bites into it, and the repellent effect of the latter microcapsules that makes it difficult for vermin or pests to approach.

[0045] [(2) Modification 2: Non-uniformity of the capsaicinoid content ratio] In the above description of the configuration, the microcapsules 2 are uniformly impregnated throughout the nonwoven fabric 1, but the content of the microcapsules 2, and therefore the content of the capsaicinoid 21 encapsulated in and impregnated in the microcapsules 2, may differ depending on the part of the nonwoven fabric 1.

[0046] For example, one of the central portions in the long side direction of the rectangular nonwoven fabric 1 is made to have a higher content of microcapsules 2, and therefore a higher content of capsaicinoid 21 encapsulated and impregnated in the microcapsules 2, compared to the other portion. By rolling up the animal and insect repellent sheet 100 and stuffing it into the gaps so that the portion with a higher content of capsaicinoid 21 is on the outside, it is possible to reduce the amount of capsaicinoid 21 impregnated into the nonwoven fabric 1 and keep costs down, compared to the case of uniform impregnation, while making it easier to obtain a sufficient repellent effect against harmful animals and insects due to the capsaicinoid 21.

[0047] Also, for example, the content ratio of capsaicinoid 21 may be changed gradually instead of stepwise as described above. For example, the content ratio of capsaicinoid 21 may be highest at one end in the long side direction of rectangular nonwoven fabric 1 and lowest at the other end, and the content ratio may be gradually decreased from one end to the other end between these ends. EXAMPLES

[0048] Next, the results of two types of tests verifying the effectiveness of the sheets according to the examples and comparative examples in preventing the passage of rats, which are an example of pests and insects, will be described. The present invention will be specifically described below using examples, but the present invention is not limited to these.

[0049] [1 Test 1: Mouse-blocking effect test 1] The results of a first test verifying the mouse-blocking effect of the sheets according to the examples and comparative examples will be described.

[0050] [(1) Sample Creation] The following sheets of examples and comparative examples were produced.

[0051] [a Working Example] A4 size nonwoven fabric (spunbond nonwoven fabric made of polyester fiber (PET fiber), basis weight 40g / m 2 The microcapsules (membrane material: melanin resin, average particle size: 15-20 μm) containing capsaicinoid (nonanoic acid vanillylamide) are mixed with acrylic resin and then impregnated into the acrylic resin. 2 The weight was 1 g per 1000 g.

[0052] [b Comparative example] A4 size nonwoven fabric (spunbond nonwoven fabric made of polyester fiber (PET fiber), basis weight 40g / m 2 ) and in the examples, the microcapsules and acrylic resin were not impregnated.

[0053] [(2) Test Content] The following tests were carried out. Note that tests b and c were carried out individually on five test animals (rats (Jcl: Wistar strain)) (the tests on each individual are numbered No. 1-1 to No. 1-5 in the order in which the tests were carried out).

[0054] [a Preparation of test equipment] A test device was prepared in which the inside of a transparent plastic box measuring 35 cm length x 30 cm width x 19.5 cm height was partitioned by a transparent plastic shielding plate with two penetrations. The penetrations were formed by inserting a pipe-shaped member into a circular opening formed in the plate-shaped shielding plate, and it was possible to move from one side of the shielding plate to the other by passing through such a pipe-shaped member. Such penetrations are hereinafter referred to as "pipes".

[0055] [b. Preliminary Testing] On the day before the actual test, without placing anything inside the pipes, we placed solid rodent food on one side of the shielding plate of the test device, and water bottles and test animals on the other side, and waited until the test animals ate the solid food. This allowed the test animals to learn that they could reach the solid food by passing through the pipes. During the test, the light and dark cycle was switched every 12 hours, the temperature was kept at 25 degrees, and water was provided sufficiently. This point was the same for all the tests described below.

[0056] [c. Implementation of the Test] Three cables were passed through one of the two pipes, and the remaining gap was filled with 10 rolled sheets of the Example. Furthermore, three cables were passed through the other of the two pipes, and the remaining gap was filled with 10 rolled sheets of the Comparative Example. Then, the solid food, water bottles, and test animals (the same individuals as in the preliminary test) were placed in the same manner as in the preliminary test, and the consumption of the solid food was observed. The test was terminated when consumption was confirmed, and if consumption was not confirmed, the test was terminated after 3 days had passed.

[0057] [(3) Test results] In tests No. 1-2 and No. 1-3, the test animals broke through the pipes filled with the comparative example and ate the solid food on the day after the test began, and the test ended. In tests No. 1-1 and No. 1-4, the test animals broke through the pipes filled with the comparative example and ate the solid food two days after the test began. In test No. 1-5, the test animals broke through the pipes filled with the comparative example and ate the solid food three days after the test began.

[0058] (4) Evaluation In all of the tests No. 1-1 to 1-5, the test animals reached the solid food by breaking through the pipes buried in the comparative example rather than the pipes buried in the example, which shows that the animal and insect repellent sheets of the examples have a higher effect of preventing rats from passing through than the comparative example.

[0059] [2 Test 2: Mouse-blocking effect test 2] The results of the second test verifying the mouse-blocking effect of the sheets according to the example and comparative example will be described.

[0060] [(1) Sample Creation] Sheets of the examples and comparative examples similar to those in Test 1 were prepared.

[0061] [(2) Test Content] The following tests were carried out. Note that tests b and c were carried out individually on five test animals (rats (Jcl: Wistar strain)) (the tests on each individual rat are designated No. 2-1 to 2-5 in the order in which the tests were carried out).

[0062] [a Preparation of test equipment] A test apparatus was prepared in which the inside of a transparent plastic box measuring 35 cm in length × 30 cm in width × 19.5 cm in height was partitioned with a transparent plastic shielding plate having one piping.

[0063] [b. Testing of Comparative Example] After passing three cables through the pipe, the remaining gap was filled with 10 rolled sheets of the comparative example. Then, solid food for raising mice was placed on one side of the shielding plate, and water bottles and test animals were placed on the other side, and the consumption of the solid food was observed. The test was terminated when consumption was confirmed.

[0064] [c. Conducting tests related to the embodiment] After passing three cables through the pipe, the remaining gap was filled with 10 rolled sheets of the Example. Then, solid food for raising mice was placed on one side of the shielding plate, and a water bottle and test animals (the same individuals as in the test related to the Comparative Example) were placed on the other side, and the consumption of the solid food was observed. The test was terminated when consumption was confirmed, and if not, the test was suspended after 3 days had elapsed and resumed after an interval of 4 days. The test was terminated when consumption was not confirmed even after 3 days had elapsed. During the interval period, the test animals were kept in a state where they could freely consume food and water.

[0065] [(3) Test results] In the tests relating to the comparative examples, for all of No. 2-1 to 2-5, the test animals pulled out the comparative example sheet, broke through the piping, and ate the solid food on the day after the test began, and the test was completed. In contrast, in the tests relating to the Examples, for all of No. 2-1 to 2-5, even after a total of six days had elapsed, including an interval period, the test animals did not break through the pipes buried in the Examples, and did not eat the solid food.

[0066] (4) Evaluation In all of the tests No. 2-1 to 2-5, the test animals broke through the pipes buried in the comparative example to reach the solid food, whereas they did not break through the pipes buried in the examples. This shows that the animal and insect repellent sheets of the examples have a higher effect of preventing rats from passing through than the comparative examples. [Explanation of symbols]

[0067] 100 Animal and insect repellent sheet 1. Nonwoven fabric 2. Microcapsules 21 Capsaicinoids 22 Membrane 3. Acrylic resin

Claims

1. This animal and insect repellent sheet is characterized in that the nonwoven fabric is impregnated with capsaicinoid.

2. 2. The animal and insect repellent sheet according to claim 1, wherein the capsaicinoid is encapsulated in microcapsules and impregnated into the nonwoven fabric.

3. 3. The animal and insect repellent sheet according to claim 2, wherein the microcapsules are mixed with an acrylic resin and impregnated into the nonwoven fabric.

4. 3. The animal and insect repellent sheet according to claim 2, wherein the average particle diameter of the microcapsules is 15 μm or more and 25 μm or less.

5. 5. The animal and insect repellent sheet according to claim 1, characterized in that it contains 3.0 mass % or more and 6.0 mass % or less of the capsaicinoid.

6. The animal and insect repellent sheet according to any one of claims 1 to 4, wherein the nonwoven fabric contains polyester fibers.

7. 5. The animal and insect repellent sheet according to claim 1, wherein the nonwoven fabric is a spunbond nonwoven fabric.

8. 5. The animal and insect repellent sheet according to claim 1, wherein the nonwoven fabric is rectangular in shape with short sides of 150 mm or more and 250 mm or less and long sides of 250 mm or more and 350 mm or less.

9. 9. The animal and insect repellent sheet according to claim 8, characterized in that the nonwoven fabric is A4 size.

10. 5. The animal and insect repellent sheet according to claim 2, wherein the capsaicinoid is encapsulated in microcapsules of a plurality of different strengths and is impregnated into the nonwoven fabric.

11. 5. The animal and insect repellent sheet according to claim 1, wherein the content of the capsaicinoid varies depending on the part of the nonwoven fabric.

12. The animal and insect repellent sheet according to claim 11, characterized in that it comprises a first portion containing the capsaicinoid at a first concentration and a second portion containing the capsaicinoid at a second concentration higher than the first concentration.

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