JPS60126202A - Insecticidal sheet - Google Patents

Abstract

PURPOSE:An insecticidal sheet easily usable and producible, exhibiting sufficient insecticidal effect from the initial stage, effective for a long period, obtained by bringing a material impregnated with a liquid insecticide, having a small volatilization area into contact with Japanese paper, or packing the material with it. CONSTITUTION:The impregnated material 1 (preferably paper) keeping a vermicide (including insecticide and repellent), having 1-10mm. thickness is packed with the thin bag 2 made of a material such as Japanese paper, nonwoven fabric, cloth, paper, etc.) having improved absorption ability in such a way that a ratio of the surface area of the impregnated material is 5-60% based on the whole surface area of the bag, to give an insecticidal sheet. EFFECT:An amount of liquid insecticide used is very small. Since the impregnated material is packed with the bag, the insecticidal sheet can be folded and made small during circulation, and it is not bulky and is convenient.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an insect-proof sheet that can be used in all kinds of AA places such as wardrobes and closets.

Conventional technology Conventionally, as insect repellents (including insecticides and repellents) for pests, especially clothing pests, solid nokradichlorobenzene,
Sublimable insect repellents such as naphthalene and comb brain, liquid organic phosphorous compounds (e.g. 1) Wnohesmithione, etc.), synthetic pyrethroid C9IJj (1-ethynyl-2-methyl-
2-pentenyl-2,2-dimethyl-3-+ 2',
2'-Dichlorovinyl)-cyclopropane-1-carboxylate, 1-ethynyl-2-methyl-2-pentenyl-2,2-dimethyl-3-(2'-methyl-1'-
7'lovenyl)-cyclopropane-1-carboxylate, l-ethynyl-2-methyl-2-pentenyl-2
, 2,3,3-tetramethylcyclopropanecarboxylate, etc.] are known.

The former solid insect repellent is used by being stored in a plastic container or wrapped in Japanese paper or non-densified cloth. This packaging with Japanese paper or the like is done to prevent the solid insect repellent from disappearing due to sublimation within a short period of time, which is a disadvantage of the insect repellent itself, or to prevent clothing from being contaminated by contact with the insect repellent.

That is, packaging with Japanese paper or the like greatly suppresses the sublimation of the insect repellent, increasing the sustainability of the insect repellent effect, and preventing direct contact with clothing, thereby reducing contamination.

On the other hand, the latter liquid insect repellent uses paper, plastic, porous material, etc. as an impregnating body and impregnates it.
(i-7 is used as is or stored in a plastic container, but there has been no detailed study on packaging with Japanese paper, non-woven fabric, etc.) This is for the reasons described below. .

Usually, the liquid insect repellent described above has higher insect repellent power than the solid insect repellent described above, and exhibits an insect repellent effect even in a small amount. However, the vapor pressure of 7 is lower than that of solid insect repellents;
In addition, because there is little volatilization (11), the insect repellent effect is low in the initial stage.For this reason, there is no need to suppress volatilization by wrapping it with Japanese paper, non-woven fabric, etc. as with solid insect repellents, but rather to suppress volatilization. It is necessary to devise ways to increase it.

Therefore, in order to solve all of the above-mentioned drawbacks of conventional methods, we have to increase the volatilization area by increasing the volatilization area by making the mothball impregnated body more complicated, and by increasing the thickness of the impregnated body. Efforts have been made from the beginning to make the insect repellent sound more effective, such as by making it thinner and increasing its volatilization.

However, if the volatilization area is widened by the method described above and the volatilization rate is increased by making the total thickness of the impregnated body < L, a high insect repellent effect can be expected from the initial stage, but on the other hand, the insect repellent is already within the set point after use. The drug concentration has reached the effective concentration and
After that, although the amount of volatilization is enough to completely replenish the chemical through the disappearance valve (by decomposition or leakage from the W hole),
Conventional insect repellents that only have a wider volatilization area and a thinner impregnated body are not designed to deal with such situations over time, so they are always continuously (7) and cause a large amount of the agent to volatilize, causing the amount of water in the impregnated body to deteriorate. The disadvantage is that the chemical disappears in a short period of time, shortening its effective period.It also has the disadvantage that the amount of volatilization varies depending on the environmental conditions during use (e.g. temperature, humidity, wind, etc.). However, while the above problem has not been solved, if the size of the impregnated body is completely limited for the purpose of extending the effective period, the volatilization area is insufficient, so the volatilization rate and amount of the chemical are slow and small, and the initial use is delayed. The insect repellent effect becomes extremely low in the process, and the amount of volatilization is kept low even after that, so VC has not been able to achieve a satisfactory effect.

The above-mentioned problems arise from the wood-related problem that the impregnated body acts as a retainer and a supply body for the insect repellent, and at the same time, it also acts as a volatilizer. In other words, in order to obtain a sufficient effect both initially and over time, the impregnated body must be thin and porous so that it can easily volatilize, and the area must be large. If such conditions are selected, the drug retention capacity will be low and the supply will be excessive, and the insect repellent will disappear in a short period of time.If you try to maintain the insect repellent effect over a long period of time, ,
The impregnated particle also needs to have a dense composition that has a strong drug-retaining ability and makes it difficult to supply the drug, and the volatilization area of the impregnated particle also needs to be small.

As mentioned above, in order to ensure a sufficient amount of chemical volatilization from the beginning and to maintain the complete volatilization over a long period of time, a contradiction arises in that impregnated bodies of contradictory materials, thicknesses, and shapes must be used. was. Therefore, conventionally, in the case of liquid insect repellents, impregnated bodies with materials, sizes, and shapes that compromise the above-mentioned conflicting effects have been used. Currently, they are used either as they are or stored in plastic containers.

OBJECTS OF THE INVENTION Accordingly, an object of the present invention is to provide a complete insect repellent sheet using a liquid insect repellent that exhibits a sufficient insect repellent effect from the initial stage, is effective for a long period of time, and is easy to use and manufacture.

BACKGROUND OF THE INVENTION For the reasons mentioned above, the present inventors used the same impregnated body to exhibit a sufficient amount of chemical volatilization from the beginning, and to maintain an appropriately controlled volatilization state thereafter. Since it is fundamentally difficult to do so, we divide the functions of the impregnated body into the insect repellent holding and supply body and the volatilization body, and first, the necessary amount is stored in the volatilization body, and when it is used, it can be quickly released. The necessary f&f of the insect repellent is evaporated and the initial insect repellent effect is fully exerted. Then, I thought that the above-mentioned problem could be solved by replenishing the volatilized material with the insect repellent at an appropriate distance from the insect repellent holder.

As a result of conducting a trial of the gods according to this idea, we found that when a small impregnated object of a liquid insect repellent is brought into contact with or wrapped in Japanese paper, etc., the VJ1 agent is released from the volatilization area of the impregnated object itself. It was discovered that the amount of evaporation is greater than 1+t. In addition, when the size t of Japanese paper etc. was increased, its volatilization 14 increased in force.

Such a phenomenon is not observed when conventional sublimable solid insect repellents such as Balajichlorobenzene are packaged with Japanese paper, and is thought to be a phenomenon unique to ant and liquid insect repellents.

Conversely, in the case of solid insect repellents, Japanese paper is used to suppress their volatilization, and the use of Japanese paper has a total effect that is completely contrary to the above phenomenon.

Further detailed research based on the above interesting findings revealed that when an impregnated body impregnated with a liquid insect repellent is wrapped in a larger piece of Japanese paper, etc., the insect repellent in the impregnated body is first absorbed into the washi paper, etc. The insect repellent transfers to the designated area and then volatilizes from Japanese paper, etc.[2.
Furthermore, it was discovered that such a function is particularly effectively exhibited within the range of the ratio between the surface area of the impregnated body and the total surface area of a packaging bag made of Japanese paper, etc., which led to the completion of the present invention. .

In other words, the insect repellent sheet according to the present invention comprises an impregnated body holding an insect repellent (including insecticides and repellents) with a thickness of 1 to 10 mm, and the surface area of the impregnated body is 5 to 10 mm thick of the entire surface area of the packaging bag. Is it stored in a packaging bag made of Japanese paper, nonwoven fabric, cloth, paper, etc. so that the ratio is 60%? The purpose of the present invention is to provide an insect repellent sheeter that exhibits a sufficient insect repellent effect from the initial stage and also exhibits an effective insect repellent effect over a long period of time.

Aspects of the Invention To explain each glaze type of the insect repellent sheet according to the present invention, first, the materials of the body impregnated with the liquid insect repellent include paper, semi-synthetic paper, synthetic paper, natural fiber, synthetic fiber, inorganic fiber, silica gel, All combinations of 174I or higher such as inorganic porous materials such as alumina, plastics, packaging compounds, gelling agents, microcapsules, etc. can be used, but paper is preferred. Such an impregnated body may contain other insect repellents, insecticides, fragrances, anti-bacterial agents, synergists, bactericides, desiccants, etc., or it may be impregnated in a separate paper. They may coexist (store) in the same packaging bag.

- The impregnated body stored in the packaging bag is not particularly limited, and is preferably 60% or less of the total surface area of the packaging bag, preferably 5% of the total surface area of the packaging bag.
It is also possible to store the impregnated body in a plurality of pieces so as to have a surface area in the range of ~40°. In this case, it goes without saying that the total surface area of the plurality of impregnated bodies is set within the above range, but the surface area of each individual impregnated body is not set within the above range.

Moreover, it goes without saying that the entire surface area of the packaging bag means the entire area of both the front and back surfaces of the packaging bag, and does not include the area of the inner surface. This applies regardless of whether there is a sealed part or a non-sealed part, and if there is no sealed part on the side part, the inner surface of the side part will come into contact with the outside air. The inner surface fJ¥ is 7J for the surface area of the packaging bag.
[I is not counted. The technical significance of limiting the surface area of the impregnated body and the packaging bag to the entire specified range will be explained in the Examples described later.

Next, regarding the material of the packaging bag, any material that can be fully impregnated with the drug and quickly volatilize may be used, such as general paper such as Japanese paper, nonwoven fabric, cloth, and kraft paper as mentioned above. are listed as suitable materials. It also includes those that have been processed with all of these resins to give them thermal adhesive properties.

Among these, heat-sealable Japanese paper,
It is a non-woven fabric.

Next, each aspect of the present invention will be described with reference to the attached drawings.

FIG. 1 shows an embodiment of the insect repellent sheet according to the present invention. First, a small-sized mat impregnated with liquid insect repellent etc. 1 (
impregnated body). The entire impregnated mat 1 is housed in a wrapping paper 2 coated with resin so that it can be heat-sealed to breathable Japanese paper, non-woven fabric, etc., and the periphery of the wrapping paper 20 and the peripheral side of the impregnated mat 1 are ? This is an insect repellent sheet that is partially heat-sealed (the sealed portion is indicated by numeral 3). In addition, in the drawing, the wrapping paper 2 (packaging bag) on the impregnated mat 1 is partially broken so that it is easy to understand. However, it is actually a continuous page.

In this packaging insect repellent sheet, the insect repellent contained in the impregnated mat 1, which is an impregnated body with a small surface area, is transferred to the wrapping paper 2 when the impregnated mat 1 and the wrapping paper 2 come into contact with each other. That is, the wrapping paper 2 serves as a packaging bag for the impregnated mat 1 and at the same time serves as a second impregnated body. However, the wrapping paper 2 made of Japanese paper, non-woven fabric, etc. is thin and has a limited ability to retain the chemical solution, and the amount of drug in the drug solution supply body (impregnated mat) is also affected. Once a certain predetermined concentration is reached, migration is stopped or suppressed. The insect repellent transferred to the wrapping paper 2 is volatilized from the surface of the wrapping paper 2 using the wrapping paper 2 as a volatilization medium for the insect repellent. Along with the volatilization, the reduced amount is replenished from the impregnated mat 1, and the volatilization continues completely.

The state of migration of the above insect repellent is shown in Figure 2. That is, the second
The figure shows (R,S)-1-ethynyl-2-methylpen)-2-enyl(IR)-cis, transchrysanthemate (hereinafter referred to as vapor sulin) contained in an impregnated mat.
What is the degree of migration of B1' into Japanese paper or nonwoven fabric? It is expressed as +00%. As is clear from FIG. 2, the chemical content of the Japanese paper or nonwoven fabric that came into contact with the impregnated mat almost reached the saturation amount within one week6, and the chemical transfer was smooth.

Next, various shapes of the impregnated body are shown in Fig. 3 (/D to (G). The shape of the impregnated body is shown in Fig. 3 (A and Alternatively, as shown in Fig. 3 (C'1~C), hollowing, notching, drilling, etc. may be performed.Furthermore, as shown in Fig. 3 (C) and As such, the impregnated body does not need to have a uniform thickness throughout.

Next, examples of how the impregnated body is packaged in a packaging bag or how the packaging bag is sealed are shown in FIGS. 4 to 12, but the present invention is not limited thereto. As shown in FIG. 1, the impregnated body 1 may be placed in the center of the packaging bag 2, or as shown in FIG. 4, it may be localized near one side of the packaging bag 2. good. Also, as shown in Figure 5,
- A plurality of impregnated bodies 1a in a packaging bag 2a.

la, ......all stored, and all the surrounding side seals 3a
Yes, you can. As for the sealing mode, as shown in Figs. 1, 4, 5, and 6, the peripheral side of the impregnated body is sealed with a seal L.
, or, as shown in FIG. 7, only the peripheral part of the packaging bag 2c is completely sealed 3. ? L2, a plurality of impregnated bodies jc, lc may move freely within the packaging bag 2C,
Further, as shown in FIG. 8, a non-sealed portion 4 may exist in the sealed portion 3d. t, as the packaging mode 7, the 9th
As shown in the figure, impregnated bodies +e and 1f with different thicknesses may coexist in the same packaging bag 2e, or impregnated bodies 1q with different thicknesses as shown in FIG.

14 may coexist in the same packaging bag 2f.

Furthermore, as shown in FIG. 111 and FIG.
1] one or more holes 5a in the packaging location).

5h may be drilled.

EXAMPLES Next, the present invention will be explained in detail with reference to Examples and Comparative Examples5, and the technical significance of the numerical limitations mentioned above will be explained.

Examples 1 to 5 and comparison f! l I~4 Mats of various sizes shown in Table 1 below (made of pulp, each mat has a thickness of 2 mm) impregnated with the specified amount of vapor sulin. Gold, non-woven fabric sealed on all three sides. Stored in a packaging bag ('33t: m x 8 tyn), sealed the remaining insect repellent sheets, and hung two sheets of each of the prepared insect repellent sheets in a Western dance (capacity: approximately 750 tl). 10 burr larvae and wool muslin cloth (2
A wire mesh bowl containing a muslin cloth (cm x 2 m) was placed and the damage to the muslin cloth was observed.

The size of the mat is indicated by the ratio of the surface area of the mat to the surface area of the packaging bag (Table 'JA) (area ratio).

Table 1 #2 10% I 3 20 1 4, 1Q 5 55
1 In addition, the insect repellent effect of each insect repellent sheet was determined by the eT value based on the feeding damage 511 prevention rate determined by the following formula.

The results are shown in FIGS. 13 to 15. As is clear from Fig. 13, the surface area of the impregnated body is 2% of the packaging bag,
In the case of a small area (Comparative Example 1), the amount of migration is small and the insect repellent effect is not sufficient. “Also, as is clear from Figure 14, even if an impregnated body with a size corresponding to an area ratio of 20% is used without packaging (Comparative Example 2
) The insect repellent effect is low. -47j In the case of thick awn mats with a % surface precision of 80 cm (Comparative Examples 3 and 4), as is clear from Fig. 15, when wrapped, the dispersion is controlled by drug transfer, so the mat without packaging is Although the effective period is extended compared to Case 1 and Comparative Example 4), the sustained effect is still inferior. From the above results, it can be seen that the ratio of the surface area of the impregnated body to the area of the packaging bag is 5 to 60%, and in particular, the case of 5 to 40 inches is most effective.

Examples 6 to 9 and Comparative Example 5.6 Mats of various thicknesses (made of pulp, 8 cnT x 7 cm
) impregnated with a predetermined amount of vapor surin.An insect repellent sheet (33 cr
Two pieces of each (n x 8cIn) were hung inside a Western dance (length approx. 75'07). Place 10 burr larvae and wool muslin cloth (2 cm x 2 an
) was placed in a wire mesh bowl and the damage to the muslin cloth was observed.

The correspondence between each Example and each Comparative Example and the thickness of the mat is shown in Table 2 below.

Table 2 Example 61 1 7 2.5 18 5 # 9 10 Comparative Example 5 o.5 # 6 15 In addition, the insect repellent effect of each insect repellent sheet is calculated by the above formula as follows: It was evaluated based on the percentage. The results are shown in FIGS. 16 and 17.

As is clear from Fig. 16, the impregnated mat is 0.5 r
When the thickness is as thin as ys (Comparative Example 5), the drug transfers quickly to the nonwoven fabric and the duration is shortened.
In the case of thick awns (Comparative Example 6), the chemical solution retention capacity of the impregnated mat was too high, so the transfer was not sufficiently carried out, and the insect repellent effect was low. From the above results, it can be seen that the thickness of the impregnated body is preferably 1 to 10 mm, particularly 2 to 10 mm.

Example 10 Pulp mat (5 m x 4 cm, thickness 2.5 mm)
1 was completely coated and impregnated with a predetermined amount of vapor surin, and one, three, and five sheets were wrapped in nonwoven fabrics measuring 33 crn x 8 m, and hung in a Western dance room. The amount of chemical solution remaining in the mat was analyzed over time, and the results shown in FIG. 18 were obtained. The amount of drug per pine was the same. From Figure 18, the amount of volatilization (i.e., the amount of transfer) can be determined by changing the number of mats.
It can be seen that it can be adjusted.

Functions and Effects of the Invention As described above, the insect repellent sheet according to the present invention has an impregnated body of a predetermined thickness that retains all of the liquid insect repellent (including insecticides, repellents, etc.) so as to have a specific area ratio. Since it is stored in a packaging bag, the insect repellent contained in the impregnated body smoothly transfers to the packaging bag that comes into contact with the impregnated body, and the packaging bag becomes the second impregnated body. The insect repellent transferred to the packaging bag is volatilized from the surface using the packaging bag as a volatilization medium at -'tL':N, and the amount lost due to this is replenished from the impregnated body and volatilized?
continue. Does it work like this? When using the insect repellent sheet of the present invention, the packaging bag, which is the volatilization medium, has a wider surface MkH, so the relatively large amount of chemicals transferred and retained in the packaging bag volatilizes within a short time. Therefore, even at the initial stage of use, the volatilization amount of the insect repellent is sufficient, and if the diffusion distribution is assisted, a high insect repellent effect is exhibited. In addition, even during volatilization, the supply of medicine to the packaging bag can be maintained at a constant level without being affected by environmental conditions, and the supply (transition) is extremely fast in the process of supplying and volatilizing the medicine. So, drug supply J? By appropriately adjusting the amount, excessive volatilization can be suppressed and a stable insect repellent effect can be maintained over a long period of time. At this time, the amount of drug supplied can be easily adjusted by adjusting the number of impregnated bodies and the amount of drug per impregnated body. Of course, in the present invention, the packaging bag is not only used as a volatilization medium, but also fulfills its original role of protecting the impregnated body.
It plays the role of preventing contamination by preventing direct contact between clothing and the impregnated body (in the case of the present invention, the packaging bag is impregnated with a drug, but it is not as bad as contamination), and also makes the appearance beautiful. It also has the effect of increasing product value.

Also, from a manufacturing point of view, the amount of repellent used is usually very small, and therefore, in the case of large or complex-shaped impregnated bodies with a large surface area, such as those previously devised, the amount of repellent used is usually very small. One coating and uniform distribution over the entire surface of the impregnated body can be achieved with simple coating methods, but techniques such as multi-point coating, solvent infiltration, printing coating, etc. are required, and the materials of the impregnated body are also limited. However, in the case of the insect repellent sheet of the present invention, the production technology, production scale, and manufacturing handling are difficult.
Since the impregnated body does not need to be smaller than conventional large-sized ones, it is possible to simply use the impregnated body v regardless of the amount of insect repellent used.
It is enough to apply only a few points, and the applied drug spreads sufficiently evenly to every corner of the impregnated body, with a thick awn of the impregnated body and a small area of 6 lζ. Furthermore, since the IJ method itself is simple, it is easy to apply in a fixed position. Furthermore, regarding the shape of the product during distribution and use, if it is a large impregnated body, its component shape will naturally be large and its handling will be inconvenient. Since it is stored in a container, it can be folded up and made small during distribution, and there are economic and sales advantages such as the cost required for packaging is low. In addition, when in use, it is convenient to open the folded bag completely and use it, and since it is an appropriate size, it is convenient to take it apart.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the insect repellent sheet according to the present invention, and FIG. 2 is a graph showing the state of drug transfer to the packaging bag, where the drug content fff in the packaging bag is plotted against the elapsed time W1
Figures L1 to 3 are perspective views showing each complementary shape of the impregnated body, and Figures 4m to 121aVi show various packaging bag forms and sealing forms of the insect repellent sheet according to the present invention.
Figure B, Figures 13 to 171 are graphs showing changes over time in the feeding damage prevention rate of various insect repellent sheets, and Figure 18 shows the influence of the number of impregnated sheets in the package on changes over time in the residual rate of drug solution in the food body. This is a graph showing the amount of money. 1.1a~1]... Impregnated body, 2,2a~2h・
...Packaging bag, 3.3a to 3h...Sealed part, A...Non-sealed part Applicant Fumakira Co., Ltd. Agent Ben Sochishi Masaaki Yonehara Patent attorney Hamamoto Tadashi 151 Eye 1 2nd i'-", '1 Figure 13 Figure 15 Man 4 Tengetsukyo □ Figure 14 Hee Agetsuto → Figure 16 Ura';=s Mesai August Age-1 Chapter 17 Figure "" Heart "-Mranship card (spontaneous) Showa -value] (Showa Moon]) Japan Patent Agency's Secretary Wakasugi Wakasugi 1, Display of the Incident 58-231450, Name of the Invention. Sheet 3, Relationship with the case of the person making the amendment Patent applicant address: 11, Kanda Mikura-cho, Chiyoda-ku, Tokyo Name: Fumakira Co., Ltd. Representative: Takashi Oshita 5, Date of amendment order Voluntary amendment 6, Subject and details of amendment Books and drawings〃Contents of amendment (1) The specification shall be amended as per the revised specification attached. (2) Figure 18 of the drawings will be amended as attached. Details ■ 1. Name of the invention Insect repellent γ-to 2. Claims Thickness for holding liquid insect repellent (including insecticides and repellents) 1
1. An insect repellent sheet comprising an impregnated body of 10 to 10 shades in a bag in which the surface area of the impregnated body accounts for 5 to 60% of the total surface area of the inner bag. 3. Detailed Description of the Invention Field of Industrial Application The present invention relates to an insect repellent sheet that can be used in all places such as wardrobes and closets. Prior Art Conventionally, as insect repellents (including insecticides and repellents) for pests, especially clothing pests, solid forms (radichlorobenzene,
Sublimable insect repellents such as naphthalene and camphor, liquid organic phosphorus compounds (e.g. DDVP, Sumithion, etc.), synthetic pyrethroids [e.g. 1-ethynyl-2-methyl-2-
Pentenyl-2,2-dimethyl-3-(2',2'-
dichlorvinyl)-cyclopropane-1-carboxylate, 1-ethynyl-2-methyl-2-peytenyl-2
, 2-dimethyl-3-(2'-methyl-1'-propenyl)-cyclopropane-1-carboxylate, 1-ethynyl-2-methyl-2-pentenyl-2,2,3,5
-tetramethylcyclopropane carboxylate, etc.] are known. The former solid insect repellent is used by being stored in a plastic container or wrapped in Japanese paper or non-woven fabric. This packaging with Japanese paper or the like is done to prevent the solid insect repellent from disappearing due to sublimation within a short period of time, which is a disadvantage of the insect repellent itself, or to prevent clothing from being contaminated by contact with the insect repellent. That is, by wrapping the insecticide in Japanese paper or the like, sublimation of the insect repellent is greatly suppressed, the sustainability of the insect repellent effect is increased, and direct contact with clothing is prevented, thereby reducing contamination. On the other hand, the latter liquid insect repellent uses paper, plastic, porous material, etc. as an impregnated body and is used as it is or stored in a plastic container. There is no detailed study on packaging using nonwoven fabrics, etc. This is for the reasons described below. Usually, the liquid insect repellent described above has higher insect repellent power than the solid insect repellent described above, and exhibits an insect repellent effect even in a small amount. However, its vapor pressure is lower than that of solid insect repellents;
Furthermore, because the amount of volatilization is small, the insect repellent effect is low in the early stages. For this reason, unlike solid insect repellents, it is not necessary to suppress volatilization by wrapping it in Japanese paper, nonwoven fabric, etc., but rather it is necessary to devise ways to increase volatilization. Therefore, in order to solve the above-mentioned drawbacks of conventional insect repellents, we have made the shape of the insect repellent impregnated body more complex to increase the volatilization area. Efforts have been made to increase the insect repellent effect from the beginning by increasing the volatilization rate by widening the volatilization area and making the impregnated material thinner using the methods described above. On the other hand, once a certain period of time has passed after the start of use, the concentration of the drug in the installation location has already reached the effective concentration, and after that, the amount of volatilization is sufficient to replenish the lost amount of the drug (due to decomposition or leakage from the installation location). However, conventional insect repellents that only have a wider volatilization area and a thinner impregnated body are not designed to deal with this situation after a period of time, so a large amount of the agent is constantly applied. Due to volatilization, the drug in the impregnated body disappears in a short period of time, resulting in a shortened effective period.
It also has the disadvantage that the amount of volatilization varies due to the influence of environmental conditions (eg, temperature, 70 degrees Celsius, wind, etc.) during use, and the above-mentioned problem has not yet been solved. On the other hand, if the size of the impregnated body is restricted for the purpose of extending the effective period, the volatilization area will be insufficient, so the amount of chemical volatilization will be reduced, and the insect repellent effect will be extremely low in the initial stage of use, and later on. However, since the amount of volatilization is suppressed to a low level, it has not yet achieved a satisfactory effect. The above-mentioned problems arise from the essential problem that the emissive body is a holder and a supply body for the insect repellent, and at the same time, it is also a volatile body. That is, in order to obtain sufficient effects both initially and after aging, the material of the impregnated body must be thin and porous so as to be easily volatilized5, and the area must be large. However, if such a thread is selected, the drug retention capacity will be low and the supply will be excessive, resulting in the insect repellent disappearing in a short period of time17. On the other hand, in order to maintain the insect repellent effect over a long period of time, the material of the impregnated body must have a strong drug retention ability and a dense composition that prevents excessive supply of chemicals, and the volatilization area of the impregnated body must be also needs to be made smaller. As mentioned above, in order to ensure a sufficient amount of chemical volatilization from the beginning and to maintain volatilization over a long period of time, it is necessary to combine (mix) impregnated bodies with contradictory materials, sizes, and shapes. There was a sense of misalignment. Therefore, conventionally, in the case of liquid insect repellents, an impregnated body with a material, size, and shape that compromises the above-mentioned conflicting effects is used, and such an impregnated body impregnated with a liquid insect repellent is used as it is. Currently, they are used either in their original form or stored in plastic containers. OBJECTS OF THE INVENTION Accordingly, an object of the present invention is to provide an insect repellent sheet using a liquid insect repellent that exhibits a sufficient insect repellent effect from the initial stage, is effective for a long period of time, and is easy to use and manufacture. BACKGROUND OF THE INVENTION For the reasons mentioned above, the inventors of the present invention have attempted to show a sufficient amount of chemical volatilization from the beginning using the same impregnated body, and maintain an appropriately controlled volatilization state thereafter. Since it is fundamentally difficult to do so, the functions of the impregnated body are divided into the insect repellent holding and supply body and the volatile body, and the required amount is first retained in the volatile body, and when it is used, the insect repellent can be quickly released. volatilizes the required amount of water and exerts its initial insect repellent effect. It was also thought that the above-mentioned problem could be solved by replenishing the volatilized material with the insect repellent at an appropriate speed from the insect repellent holder. ``As a result of conducting various tests based on this idea, we found that if an impregnated object with a small volatilization area impregnated with a liquid insect repellent is brought into contact with Japanese paper or wrapped in paper, etc., and after a period of time (about one week) has passed (approximately one week), the impregnated object itself will absorb the liquid insect repellent. It was discovered that the amount of evaporation from the evaporation area is greater than the amount of evaporation from the evaporation area. Furthermore, as the size of Japanese paper etc. increased, the amount of volatilization increased. Such a phenomenon is not observed when a conventional sublimable solid insect repellent such as Balajichlorobenzene is wrapped in Japanese paper or the like, and is considered to be a phenomenon unique to liquid insect repellents. Conversely, in the case of solid insect repellents, Japanese paper is used to suppress their volatilization, and the use of Japanese paper is aimed at an effect that is completely contradictory to the above phenomenon. Based on the above interesting findings, further detailed research revealed that when an impregnated body impregnated with a liquid insect repellent is wrapped in a larger piece of Japanese paper, etc., the insect repellent in the impregnated body is first absorbed into the Japanese paper. The insect repellent transferred in a predetermined amount and then volatilized from the Japanese paper etc. exhibits the function of being supplied from the impregnated body, and this function is based on the ratio of the surface area of the impregnated body to the overall surface condition of the inner bag made of Japanese paper etc. The present invention has been completed based on the discovery that the present invention is particularly effective within the scope of the present invention. In other words, the insect repellent sheet according to the present invention comprises an impregnated body with a thickness of 1 to 10+ ma that holds an insect repellent (including insecticides and repellents), and the surface area of the impregnated body is 5 to 60 mm of the entire surface area of the inner bag. %
It is characterized by being housed in an inner bag made of Japanese paper, non-woven fabric, cloth, paper, etc. so that the ratio of The purpose is to provide an insect repellent sheet with effective insect repellent properties. Aspects of the Invention To explain various aspects of the insect repellent sheet according to the present invention, first, the materials for the liquid insect repellent impregnated body include paper, synthetic paper mixed with natural fibers, synthetic paper, natural fibers, synthetic fibers, inorganic fibers, silica gel, One or more of inorganic porous materials such as alumina, plastics, clathrates, gelling agents, microcapsules, etc. are used in combination, and paper is preferred. Other insect repellents, insecticides,
Fragrances, antifungal agents, synergists, bactericidal agents, desiccants, etc. may be contained together, or they may be contained in separate impregnated bodies and coexisted (stored) in the same inner bag. . - The number of impregnated bodies to be stored in the inner bag is not particularly limited, and is preferably 60% or less of the entire surface area of the inner bag, preferably 5
It is also possible to store the impregnated body in multiple pieces so that the surface area is in the range of ~40%. In this case, ′Iy
It goes without saying that the total surface area of several impregnated bodies is set within the above range, and the surface area of each individual impregnated body is not set within the above range. Furthermore, it goes without saying that the entire surface area of the inner bag means the area of both the front and back surfaces of the inner bag, and does not include the area of the inner surface. This means that regardless of whether it is a sealed part or a non-sealed part, if there is no sealed part on the mata-tsukuda side part, the inner surface of the side part will come into contact with the outside air, but in this case also. The area of the inner surface is not added to the surface area of the inner bag. The technical significance of limiting the surface area ratio of the impregnated body and inner bag to a specific range will be explained in the examples described later. Next, regarding the material of the inner bag, any material that can be impregnated with the chemical and quickly volatilized may be used, such as general paper such as Japanese paper, nonwoven fabric, cloth, and kraft paper as mentioned above. It is mentioned as a suitable material. It also includes those processed with resin or the like to impart heat-fusibility. Among these, heat-sealable Japanese paper and nonwoven fabric are preferred. Next, various aspects of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an embodiment of the insect repellent sheet according to the present invention. First, a small impregnated mat 1 (
impregnated body). This impregnated mat 1 is housed in a wrapping paper 2 treated with resin so that it can be heat-sealed to breathable Japanese paper, non-woven fabric, etc. This is an insect repellent sheet whose surrounding area is heat-sealed (the sealed area is indicated by numeral 3). Although the wrapping paper 2 (inner bag) on the impregnated mat 1 is partially broken in the drawing for ease of understanding, it is actually a continuous paper surface. In this packaging insect repellent sheet, the insect repellent contained in the impregnated mat 1, which is an impregnated body with a small surface area, is transferred to the wrapping paper 2 when the impregnated mat 1 and the wrapping paper 2 come into contact with each other. That is, the wrapping paper 2 serves as an inner bag for the impregnated mat 1 and at the same time serves as a second impregnated body. However, since the wrapping paper 2 made of Japanese paper or non-woven fabric is thin, there is a limit to its ability to retain the chemical solution, and it also depends on the chemical stitching in the drug solution supply body (impregnated mat). Once the agent reaches a certain equilibrium state, migration is stopped or inhibited. The insect repellent transferred to the wrapping paper 2 is volatilized from the surface of the wrapping paper 2 using the wrapping paper 2 as a volatilization medium for the insect repellent. Along with its deterioration,
The lost amount is replenished from the impregnated mat 1, and volatilization continues. FIG. 2 shows the state of migration of the above insect repellent. That is, the second
The figure shows (R. 5)-1-ethynyl-2-methylbent-2-enyl (
The degree of transfer of IR)-cis, transchrysanthemate (hereinafter referred to as Paper Surin) to Japanese paper or nonwoven fabric is expressed with the final equilibrium state of drug distribution in Japanese paper or nonwoven fabric being 100%. As is clear from FIG. 2, the chemical content of the Japanese paper or nonwoven fabric in contact with the impregnated mat almost reaches equilibrium within one week, and the chemical transfer is smooth. Next, various shapes of the impregnated body are shown in FIGS. 3(A) to 3(G). The shape of the impregnated body may be not only rectangular or circular as shown in FIG. 3 (A) and middle), but also any shape.
As shown in FIG. 3 (0) to @), processing such as hollowing, notching, and drilling may be performed. Furthermore, as shown in FIGS. 3(F) and 3(G), the impregnated body does not need to have a uniform thickness throughout. By applying them, it is possible to adjust the amount of volatilization, that is, the effective period. Next, each ridge side of the packaging mode of the impregnated body in the inner bag or the sealing mode of bag making in the mine is shown in FIGS. 4 to 12, but it is needless to say that the present invention is not limited to these. As shown in FIG. 1, the impregnated body 1 may be placed in the center of the inner bag 2, or as shown in FIG. 4, it may be localized near one side of the inner bag 2. . Also, as shown in Figure 5,
- A plurality of impregnated bodies 1a, 1a, . . . may be housed in the inner bag 2a, and the peripheral side portion thereof may be sealed 3a. As a sealing mode, the peripheral side of the impregnated body may be sealed as shown in FIGS. 1, 4, 5, and 6, or the peripheral side of the inner bag 2c may be sealed as shown in FIG. A plurality of impregnated bodies 10 and 1c are freely #m/I in the inner bag 2c.
Alternatively, as shown in FIG. 8, a non-sealed portion 4 may exist in the sealed portion 3d. Also,
As a packaging mode, impregnated bodies 1e and 1f with different thicknesses may coexist in the same inner bag 2e as shown in FIG. 9, or impregnated bodies 1g with different sizes as shown in FIG. 1h may coexist in the same inner bag 2f. Furthermore, as shown in FIGS. 11 and 12 1, one or more holes 58° 5b may be bored at predetermined locations in the inner bags 2g and 2b (usually at the packaging location of the impregnated body 11° 1j). good. Examples Next, % Examples and Comparative Examples will be shown to specifically demonstrate the present invention.
In addition, the technical meaning of the above-mentioned bush value limitation will be explained. ￥ Examples 1 to 5 and Comparative Examples 1 to 4 God-sized mats shown in Table 1 below (made of pulp, the thickness of each mat is 2 mm thick) were impregnated with 600 capes of vapor sulin. Then, seal the three sides and store them in a non-woven inner bag (33cm x 8cm), seal the remaining sides, and hang two sheets of each AlJJ insect repellent sheet in a Western-style dresser (volume approx. y5ot). I lowered it. Inside the dance, there were 10 burr larvae and wool muslin cloth (2
Set up a wire mesh ball containing 1 cm x 2 cm)
．． The damage to the muslin cloth was observed. The size of the mat is indicated by the ratio of the surface area (area ratio) of the mat to the surface area (front and back) of the inner bag. Table 1 2 1ochi 3 20% 4 4o% 5 Comparative example 1 for section 55 2% tt 2 20% size without packaging *tt5 80
% In addition, the insect repellent effect of each insect repellent sheet was evaluated by the feeding damage inhibition rate calculated by the following formula. The results are shown in FIGS. 13 to 15. As is clear from FIG. 15, when the surface area of the impregnated body is as small as 2 inches relative to the inner bag (Comparative Example 1), the transfer amount of K is small and the insect repellent effect is not sufficient. Moreover, as is clear from FIG. 14, even if an impregnated body with a size corresponding to an area ratio of 20% is used, the insect repellent effect is low when used without packaging (Comparative Example 2). In addition, in the case of mats with a size of 80% area ratio (Comparative Examples 3 and 4), as is clear from Fig. 15, when wrapped, volatilization due to drug transfer is controlled; Although the effective period is extended compared to Example 4), a sufficient sustained effect cannot be expected due to the basic condition that the mat area is large, that is, the volatilization rate is high. From the above results, it can be seen that the ratio of the surface area of the impregnated body to the surface area of the inner bag is 5 to 60%, particularly an area ratio of 5 to 40% is most effective. Examples 6 to 9 and Comparative Example 5.6 Mats of various thicknesses (manufactured by Valve, 8an x 7cm)
An insect repellent sheet (53c
m x 8 cm), two pieces of each were hung in a Western dance (750 t in volume). Place 10 burr larvae and wool muslin cloth (2cm x 2cm) inside the western dancer.
A wire mesh ball containing muslin cloth was placed and the damage to the muslin cloth was observed and observed. The correspondence between each Example and each Comparative Example and the thickness of the mat is shown in Table 2 below. Table 2 Example 61 # 7 2.5 〃85 〃910 Comparative Example 50.5 〃 6 15 In addition, the insect repellent effect of each insect repellent sheet is determined by the feeding damage prevention rate according to the above formula, as in the case of each of the above examples. I rated it well. The results are shown in FIGS. 16 and 17. As is clear from FIG. 16, when one impregnated mat is as thin as 0.5 m (Comparative Example 5), the drug transfers to the nonwoven fabric too quickly and the duration is shortened. In the case of (Comparative Example 6), the ability of the impregnated mat to retain the chemical solution was too high and the transfer was insufficient, resulting in a low insect repellent effect. From the above results, the thickness of the impregnated body is 1 to 10 mm, especially 2 to 1 mm.
It can be seen that o115+ is preferable. Example 1゜Pulp mat (5cm x 4cm, thickness 2.5s)
n) 1, 3 and 5 sheets coated and impregnated with K60mm vapor sulin were wrapped in non-woven fabric with a size of 33 cm x 8 crn and hung in a Western dance room. The amount of chemical solution remaining in the mat was analyzed over time, and the results shown in FIG. 18 were obtained. Each test insect repellent sheet was considered as one unit, and the total amount of insect repellent in each base was the same. From FIG. 18, it can be seen that by changing the number of mats, the amount of yellowing (that is, the amount of yellowing transferred) can be adjusted. Effects and Effects of the Invention As described above, the insect repellent sheet according to the present invention has an impregnated body of a predetermined thickness that holds a liquid insect repellent (including insecticides, repellents, etc.) so as to have a specific area ratio. It's stored inside an inner bag, so I'm not sure what to do now lol
J-1z a7 +++ tll,,! ? Eight J4
ty + w, A, Ly The inner bag becomes the second impregnated body. The insect repellent transferred to the inner bag is volatilized from the surface of the inner bag using the inner bag as a volatilization medium over a certain period of time, and the amount lost due to this is replenished from the impregnated body to intermittent volatilization. When using the insect repellent sheet of the present invention that exerts such an effect, the inner bag, which is the volatilization medium, has a large surface area, so a relatively large amount of the chemical transferred and retained in the inner bag is Since it volatilizes within a short period of time, volatilization of the insect repellent is sufficient even at the initial stage of use, and since the insect repellent has a large surface area, it exhibits a high insect repellent effect by facilitating diffusion and distribution over a wide area at the place of use. In addition, even during volatilization, the supply of the drug to the inner bag is maintained at a constant level, almost unaffected by environmental conditions, and in the process of drug supply and volatilization, the supply (transfer) is the rate-limiting step. Therefore, by appropriately adjusting the chemical supplier, unnecessary volatilization can be suppressed, and a stable insect repellent effect can be maintained over a long period of time. At this time, we will investigate the supply amount of mulberry fields. ! S type 77+
1 rib - Imagata - 4! This can be easily done by changing the rm and h items 8111. It should be noted that in the present invention, the inner bag is not only used as a volatilization medium, but also fulfills its original role of protecting the impregnated body and preventing direct contact between clothing and the impregnated body to prevent contamination. (In the case of the present invention, the inner bag is impregnated with a drug, but the needle is not enough to cause contamination), and it also has the effect of making the appearance beautiful and increasing the product value. In addition, from a manufacturing perspective, the amount of liquid insect repellent used is usually very small. Therefore, if the impregnated body is large or has a complicated shape and has a large surface area, as has been devised in the past, the amount of liquid insect repellent used is very small. It is difficult to achieve constant coating and uniform distribution over the entire surface of the impregnated body with a simple coating method, so multi-point coating,
The insect repellent sheet of the present invention requires techniques such as solvent dipping and printing coating, and the number of impregnated materials is limited, making the production technology, production scale, and manufacturing handling difficult. Since the impregnated body is smaller than a large one, regardless of the amount of insect repellent used, it is enough to simply apply one to several spots on the impregnated body, and the applied agent also depends on the size of the impregnated body. Because the surface area, r, and t are small, it spreads sufficiently evenly to every corner of the impregnated body.In addition, the application method itself is simple and easy to apply. Regarding the form, if it is a large impregnated body, the product form will be large and there will be many inconveniences in handling it, but in the insect repellent sheet of the present invention, the impregnated body is stored in the inner bag. During distribution, it can be folded to make it smaller, which has economic and sales advantages such as reducing the cost of outer packaging, etc. Also, when using it, it is possible to open the folded bag and use it. Moreover, since it has an appropriate size, it has the advantage of not being bulky and convenient. 4. Brief description of the drawings FIG. 1 is a perspective view showing one embodiment of the insect repellent sheet according to the present invention, and FIG. is a graph showing the state of drug transfer to the inner bag, showing the drug-containing dark blue of the inner bag as a relation to the elapsed time by υ4, and No. 121 (A) to (G) show various shapes of the container body. Perspective views, Figures 4 to 12 are perspective views showing various inner bag aspects and sealing aspects of the insect repellent sheet according to the present invention, 11
Figures 3 to 17 are graphs showing changes over time in the feeding damage prevention rate of famous insect repellent sheets, and Figure 18 is a graph showing the effect of packaging @ number of soaked sheets on changes over time in the residual rate of drug solution in impregnated bodies. be. 1, 1 a ~ 1 j = impregnated body, 2.2a ~ 2h・
...Inner tli bag, 3. 5 a ~ l b-... part on the sea, 4... non-sealed part "Person" Fumaki 2- Co., Ltd. agent Patent attorney Masaaki Yonehara Patent attorney Tadashi Hamamoto Figure 18 jk tiger R number □

Claims (1)

[Claims] Atsushi 1 that holds liquid insect repellent (including insecticides and repellents)
An insect repellent sheet characterized in that the insect repellent sheet has an impregnated body sound of ~10- and is housed in a packaging bag such that the surface area of the impregnated body is a ratio of 5 to 601 of the total surface area of the packaging bag.