JP2021159036A - Incense stick and method for evaporating chemical using the same - Google Patents

Abstract

To allow effect of chemical to be obtained for a long time without incorporating large amount of chemical into an incense stick even in an environment where air changes a lot.SOLUTION: In a method, a first step of evaporating chemical such that the volume of chemical evaporation is two times or more of a reference volume of chemical evaporation, which is a volume of chemical evaporation in the case of uniformly kneading a predetermined volume of chemical into an incense stick 1 and a second step of evaporating chemical such that the volume of chemical evaporation is equal to or less than the volume of chemical evaporation in the first step, or not evaporating chemical are repeated a plurality of times.SELECTED DRAWING: Figure 1

Description

The present invention relates to incense sticks used for exterminating pests and the like, and a method for transpiring chemicals using incense sticks.

Conventionally, mosquito coils have been known as this type of incense stick. Patent Document 1 discloses that in a spiral mosquito coil, a portion that generates anthelmintic gas and a portion that simply continues combustion but does not generate anthelmintic gas or a portion that reduces anthelmintic drug are alternately provided in one roll of mosquito coil. ing. By alternately combining the part that generates anthelmintic gas and the part that does not generate anthelmintic gas or the part that reduces anthelmintic drug at intervals that seem appropriate in terms of time, the gas concentration in the indoor air is automatically adjusted even if continuous combustion is performed. It is also disclosed that it will be adjusted.

Jitsukaisho 53-17680

By the way, when burning incense sticks in a room, the ventilation frequency of the room is high, and there are cases where it is close to the outdoors. Under such circumstances, the concentration of chemicals in the air tends to decrease, and the chances of pests invading increase, so that the effect of exterminating pests decreases with general incense sticks. There is also a demand for the efficacy of the drug.

Therefore, it is conceivable to increase the concentration of the drug kneaded into the incense stick to increase the amount of the drug evaporated per unit time, thereby increasing the efficacy of the drug. However, there is a problem that many chemicals are required to increase the concentration of the chemicals to be kneaded into the incense stick, and the cost of the incense stick rises.

On the other hand, as a result of research by the inventors of the present application, it has been found that it is not always necessary to keep the drug concentration in the air high in order to obtain the efficacy of the drug. For example, an environment in which pests continuously invade a room is generally unlikely, and once the invading pests are exterminated, even if the concentration of chemicals in the air is low until the next pests invade. A good case is expected. It has also become clear that there is virtually no problem even if the cycle is lengthened to some extent.

On the other hand, the incense stick of Patent Document 1 is configured by alternately combining the insect-repellent gas generating portion and the other portion, and the purpose is to automatically adjust the gas concentration in the indoor air even if the incense stick is continuously burned. Since it is intended to be adjusted to the above, a closed room is assumed, and no consideration is given to the efficacy of the drug in an environment where air is frequently replaced. In this way, the general usage environment of incense sticks is a closed room, and it is only configured so that the effect of the drug is exhibited in that room. The efficacy may be significantly reduced.

The present invention has been made in view of this point, and an object of the present invention is to maintain the effect of the drug for a long period of time even in an environment where a large amount of air is replaced without containing a large amount of the drug in the incense stick. To be able to get it.

In order to achieve the above object, the amount of the chemical evaporation is periodically increased by a predetermined value or more during the combustion of the incense stick, so that the effect of the chemical can be obtained even in an environment where air is frequently replaced.

The first invention is a method of transpiring chemicals using incense, which is more than twice the amount of chemical evaporation, which is the amount of chemical evaporation when a predetermined amount of the chemical is uniformly kneaded into the incense substrate. The first step of evaporating the drug so as to be, and the second step of evaporating the drug or not evaporating the drug so that the amount of the drug transpired is lower than that of the first step are repeated a plurality of times to obtain the incense. It is characterized in that the maximum drug concentration in the air during burning is 1.5 times or more the minimum drug concentration.

That is, when the reference chemical evaporation amount is, for example, the chemical evaporation amount when the incense stick used in a conventional closed room is burned, the chemical evaporation amount is used as the reference chemical evaporation amount in an environment where air is frequently replaced. Then, the efficacy of the drug may be significantly reduced. In the present invention, since the drug is transpired so that the amount of the drug transpired is twice or more the reference drug evaporation amount in the first step, the drug concentration in the air rapidly increases even in an environment where the air is frequently replaced. Therefore, the efficacy of the drug can be fully obtained. After that, in the second step, the chemicals are evaporated so that the chemical evaporation amount is less than the reference chemical evaporation amount, or the chemicals are not evaporated, so that the total amount of the chemicals applied to the incense stick is reduced. Further, since the first step and the second step are repeated a plurality of times, even if a large amount of chemicals are discharged from the room due to the replacement of air, the chemical evaporation is more than twice the standard chemical evaporation amount in the subsequent first step. The drug evaporates in an amount so that the efficacy of the drug can be sufficiently obtained. This will continue during the burning of the incense stick, for example for several hours or more. Further, in the first step, the chemical may be transpired so that the chemical evaporation amount is 2.5 times or more the standard chemical evaporation amount, or the chemical evaporation amount may be 3 times or more the standard chemical evaporation amount. The drug may be transpired.

The second invention is characterized in that the first step and the second step are repeated twice or more per hour.

According to this configuration, the drug is transpired so that the amount of drug transpired is at least twice the standard drug evaporation amount, and the drug is transpired so that the drug evaporation amount is less than the standard drug evaporation amount, or the drug is transpired. Since the process of not evaporating is repeated twice or more per hour, the efficacy of the drug can be sufficiently obtained in a short time of less than one hour even if the air is replaced frequently. The first step and the second step may be repeated 2.5 times or more per hour, or may be repeated 3 times or more per hour.

The third invention is characterized in that the first step and the second step are repeated in a room where the ventilation rate is 8 times or more per hour.

According to this configuration, by evaporating the drug so that the amount of the drug is transpired more than twice the standard amount of the drug evaporated, the drug concentration in the air can be rapidly increased even in a room ventilated 8 times or more per hour. Therefore, the efficacy of the drug can be fully obtained. The first step and the second step may be repeated in a room where the ventilation rate is 9 times or 10 times per hour.

A fourth invention is characterized in that the agent is a pest control agent.

According to this configuration, when a pest invades the room when the air is replaced, the pest control agent can exterminate the pest. In addition, during the burning of the incense stick, there is a time to evaporate the chemical so that the amount of the chemical evaporates is less than the standard chemical evaporation amount, or a time to not evaporate the chemical, so that the concentration of the pest control agent in the air in the room is unnecessarily increased. There is no such thing.

A fifth invention is characterized in that the pest control agent contains at least one of dimefurthrin, mepafluthrin, prarethrin, d-allethrin and d-trans-allethrin.

According to this configuration, a higher pest control effect can be obtained by containing at least one of dimefurthrin, mepafurthrin, prarethrin, d-allethrin and d-trans-allethrin.

A sixth invention is characterized in that an incense stick obtained by applying the drug to the incense stick base material is used.

According to this configuration, a so-called coated incense stick can be used. Then, the first step is performed by burning the portion coated with the chemical, and the second step is performed by burning the portion not coated with the chemical. Can be easily repeated.

According to the seventh invention, in an incense containing a transpirational agent, the amount of transpiration of the agent is more than twice the amount of transpiration of the reference agent, which is the amount of transpiration of the agent when a predetermined amount of the agent is uniformly kneaded into the incense base material. It is possible to repeat the first step of evaporating the drug so as to evaporate the drug and the second step of evaporating the drug or not evaporating the drug so that the amount of the drug transpired is lower than that of the first step. It is characterized by being configured.

The eighth invention is characterized in that it has a portion where the drug is applied to the incense base material and a portion where the drug is not applied to the incense base material.

The ninth invention is characterized in that the drug is applied only to one surface of the incense base material.

According to this configuration, it is possible to easily produce an incense stick having a portion in which the chemical is applied to the incense base material and a portion in which the chemical is not applied to the incense base material.

According to the present invention, after the chemicals are evaporated so that the chemical evaporation amount is at least twice the standard chemical evaporation amount, which is the chemical evaporation amount when a predetermined amount of the chemical is uniformly kneaded into the incense, the reference chemical is used. Since the drug is transpired or the drug is not transpired so that the amount of the drug is less than the amount of evaporation, the effect of the drug is prolonged even in an environment where air is frequently replaced without containing a large amount of the drug in the incense. Can be obtained over time.

It is a top view of the incense stick which concerns on embodiment of this invention. It is a figure corresponding to FIG. 1 which concerns on modification 1 of embodiment. FIG. 1 is a view corresponding to FIG. 1 showing an example in which a drug is applied in a state where two incense sticks are integrated. It is a graph which shows the change of the chemical transpiration amount when the incense stick coated with dimefluthrin is burned. It is a graph which shows the change of the chemical transpiration amount when the incense stick coated with mepafluthrin is burned. It is a graph which shows the change of the chemical transpiration amount when the incense stick coated with plaretrin is burned. It is a graph which shows the change of the chemical transpiration amount when the incense stick coated with allethrin is burned. It is a side view of a test room. It is a top view of a test room. A graph showing the change in air concentration when the coated part of dimefluthrin is burned for 10 minutes and the uncoated part is burned for 10 minutes, and when the coated part is burned for 10 minutes and the uncoated part is burned for 20 minutes. be. A graph showing the change in air concentration when the coated part of dimefluthrin is burned for 5 minutes and the uncoated part is burned for 5 minutes, and when the coated part is burned for 5 minutes and the uncoated part is burned for 10 minutes. be. A graph showing the change in air concentration when the coated part of mepafluthrin is burned for 10 minutes and the uncoated part is burned for 10 minutes, and when the coated part is burned for 10 minutes and the uncoated part is burned for 20 minutes. be. A graph showing the change in air concentration when the coated part of mepafluthrin is burned for 5 minutes and the uncoated part is burned for 5 minutes, and when the coated part is burned for 5 minutes and the uncoated part is burned for 10 minutes. be. A graph showing the change in air concentration when the coated part of Praletrin is burned for 10 minutes and the uncoated part is burned for 10 minutes, and when the coated part is burned for 10 minutes and the uncoated part is burned for 20 minutes. be. A graph showing the change in air concentration when the coated part of Praletrin is burned for 5 minutes and the uncoated part is burned for 5 minutes, and when the coated part is burned for 5 minutes and the uncoated part is burned for 10 minutes. be. Air when the coated part of d-allethrin (0.3 wt%) is burned for 10 minutes and the uncoated part is burned for 10 minutes, and when the coated part is burned for 10 minutes and the uncoated part is burned for 20 minutes. It is a graph which shows the change of medium concentration. Air when the coated part of d-allethrin (0.3 wt%) is burned for 5 minutes and the uncoated part is burned for 5 minutes, and when the coated part is burned for 5 minutes and the uncoated part is burned for 10 minutes. It is a graph which shows the change of medium concentration. Air when the coated part of d-allethrin (0.9 wt%) is burned for 10 minutes and the uncoated part is burned for 10 minutes, and when the coated part is burned for 10 minutes and the uncoated part is burned for 20 minutes. It is a graph which shows the change of medium concentration. Air when the coated part of d-allethrin (0.9 wt%) is burned for 5 minutes and the uncoated part is burned for 5 minutes, and when the coated part is burned for 5 minutes and the uncoated part is burned for 10 minutes. It is a graph which shows the change of medium concentration. Changes in air concentration when the coated part of d-trans-allethrin is burned for 10 minutes and the uncoated part is burned for 10 minutes, and when the coated part is burned for 10 minutes and the uncoated part is burned for 20 minutes. It is a graph which shows. Changes in air concentration when the coated part of d-trans-allethrin is burned for 5 minutes and the uncoated part is burned for 5 minutes, and when the coated part is burned for 5 minutes and the uncoated part is burned for 10 minutes. It is a graph which shows.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.

FIG. 1 is a plan view of an incense stick 1 according to an embodiment of the present invention. The incense stick 1 contains a transpiring chemical, and is configured so that the method of transpiring the chemical using the incense stick according to the present invention can be carried out only by burning. That is, the incense 1 is the first step of evaporating the chemical so that the chemical evaporation amount is twice or more the standard chemical evaporation amount, which is the chemical evaporation amount when a predetermined amount of the chemical is uniformly kneaded into the incense base material. It is possible to repeat the second step of evaporating the chemicals or not evaporating the chemicals so that the amount of the chemicals transpired is lower than that of the first step.

Specifically, the incense stick 1 is a spiral incense stick, and has a plurality of portions 1a containing a drug and a plurality of portions 1b not containing a drug, respectively, and a portion 1a containing a drug and a portion 1b not containing a drug. And are provided alternately in the circumferential direction. As a result, when the incense stick 1 is burned, the time during which the chemical evaporates and the time during which the chemical does not evaporate can be alternated. The time for the drug to evaporate can be determined by the length of the portion 1a containing the drug, and can be set to, for example, 5 minutes or more and 20 minutes or less. The time during which the drug does not evaporate can be determined by the length of the portion 1b containing no drug, and can be set to, for example, 5 minutes or more and 20 minutes or less. The length of the drug-containing portion 1a and the length of the drug-free portion 1b may be the same, or one may be longer than the other. The burning time of the incense stick 1 is not particularly limited, but can be set to, for example, about 4 hours to 8 hours.

The portion 1a containing the drug is a portion formed by applying a liquid drug to the incense base material. Since the incense base material has a property of absorbing a liquid drug, the drug is present not only on the surface of the incense base material but also on the surface layer portion of the incense base material. On the other hand, the portion 1b containing no drug is a portion formed only of the incense base material. The incense base material contains at least a flammable combustion material such as wood powder, paper, and pulp, and a binder composed of cornstarch or the like for solidifying the combustion material. The incense base material may contain a coloring agent or the like. The incense stick 1 may have a shape extending linearly or a rectangular shape, for example.

If the incense stick 1 has a shape extending linearly, the portion 1a containing the drug and the portion 1b not containing the drug are alternately provided in the longitudinal direction. Further, the cross-sectional shape of the incense stick 1 can be various shapes such as a rectangular cross section, a circular cross section, and an elliptical cross section. The portion 1a containing the drug may be formed by kneading the drug into the incense base material.

In this embodiment, the drug-free portion 1b is provided, but the drug may be included in this portion. In this case, the portion indicated by reference numeral 1b can contain an amount of a drug smaller than the amount of the drug contained in the portion indicated by reference numeral 1a. The amount of chemicals is small and the time for evaporation can be alternated.

In the modified example of the embodiment shown in FIG. 2, the interval at which the portion 1a containing the drug is provided is set wider than in the case shown in FIG. The interval at which the portion 1a containing the drug is provided can be arbitrarily set, and may be an equal interval or an unequal interval. Similarly, the interval at which the drug-free portion 1b is provided can be arbitrarily set. In addition, the interval at which the portion containing a smaller amount of the drug than the portion indicated by reference numeral 1a is provided can be arbitrarily set. Further, the number of the portion 1a containing the drug in one incense stick 1 can be arbitrarily set. Similarly, the number of the drug-free portion 1b in one incense stick 1 can be arbitrarily set. Further, the number of portions containing a smaller amount of the drug than the portions indicated by reference numeral 1a can be arbitrarily set.

FIG. 3 shows an example in which the drug is applied in a state where the two incense sticks 1, 1 are integrated. By integrating the two incense sticks 1 and 1, there is almost no gap between the incense sticks 1 and 1, and in this state, the incense sticks 1 and 1 are linearly formed on the upper surface (also referred to as the front surface) or the lower surface (also referred to as the back surface). By applying the drug, the drug can be applied to two incense sticks 1, 1 at a time. The chemicals may be applied to the incense stick 1 one by one. The posture of the incense stick 1 when used is not particularly limited, and the incense stick 1 can be used in a posture in which the upper surface and the lower surface extend in the vertical direction.

The method of applying the drug to the incense stick 1 may be any method, and examples thereof include a method of dropping or dropping the drug from the incense stick 1, a method of spraying, a method of applying with a brush or the like. .. When the chemical is applied, it may be applied to the upper surface or the lower surface of the incense stick 1 in any pattern, and may be applied in a dot-like or corrugated pattern in addition to the linear pattern shown in FIG. The chemical may be applied only to the upper surface of the incense stick 1, only to the lower surface, or may be applied to both sides. Further, the application range of the chemical may be set longer for the combustion start portion of the incense stick 1. As a result, the chemicals can be continuously transpired for a predetermined time from the start of combustion of the incense stick 1, and the initial efficacy can be improved.

The drug can be, for example, a pest control agent, various fragrances, or the like. Examples of pest control agents include dimefluthrin, transfluthrin, allethrin, dl, d-T80-allethrin, dl, dT-allethrin, d, dT-allethrin, prarethrin, metoflutrin, mepafluthrin, lenofluthrin, empentrin, pyrethrin, profluthrin, Examples thereof include heptafluthrin and tetraflumethrin, and among these, a pest control agent containing at least one of them can be used. In addition, the agents described in Examples described later can also be used.

When applying the chemical to the incense stick 1, a liquefied one can be used. The liquid chemical contains the above-mentioned pest control agent and a solvent. Examples of the solvent include normal paraffin such as Parasol 134, isoparaffin such as Isopar L, hexane, ethanol, water and the like, and any one or a plurality of these can be used in combination. The solvent may be changed depending on the drug.

(Chemical transpiration amount)
The amount of chemicals transpired when the incense stick 1 is burned can be the amount (weight) at which the chemicals transpire into the air per unit time. The amount of chemical evaporation can be arbitrarily set according to the amount of the chemical contained in the incense stick 1. Basically, the larger the amount of the chemical contained in the incense stick 1, the larger the amount of chemical evaporation. The incense base material is the same in all the comparative examples and examples shown below, and includes, for example, wood powder, paper, pulp and the like, and cornstarch and the like. In the example of applying the chemical, as described above, the chemical dissolved in the solvent is applied with a brush or the like, but the amount of the chemical evaporation hardly changes depending on the coating method.

FIG. 4 is a graph showing the amount of chemical evaporation of Comparative Examples 1 and 2 and Examples 1 and 2. Comparative Example 1 is an incense stick formed by uniformly kneading dimefluthrin as a pest control agent into an incense base material, and is a so-called kneaded incense stick. In the kneaded incense stick of Comparative Example 1, dimefluthrin is uniformly present throughout. The amount of dimefluthrin contained in the incense stick of Comparative Example 1 is 0.03 wt%.

Comparative Example 2 is an incense stick in which dimefluthrin is uniformly applied to the entire upper surface of the incense stick base material, and is a so-called incense stick. In the applied incense stick of Comparative Example 2, dimefluthrin is uniformly present on the entire upper surface. The amount of dimefluthrin contained in the incense stick of Comparative Example 2 is 0.03 wt%.

Example 1 is an incense stick 1 in which a portion 1a containing a drug and a portion 1b not containing a drug are alternately provided, as shown in FIGS. 1 and 2. Dimefluthrin is applied to the upper surface of the drug-containing portion 1a, but dimefluthrin is not applied to the drug-free portion 1b. In the incense stick 1 of Example 1, dimefluthrin is present only on the upper surface of the portion 1a containing the drug. The length of the drug-containing portion 1a and the length of the drug-free portion 1b are the same, and the burning time is 10 minutes. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are also the same. 0.06 wt% of dimefluthrin is present in the drug-containing portion 1a. Therefore, the total amount of dimefluthrin in Example 1 is the same as that in Comparative Examples 1 and 2.

The second embodiment is the coated incense stick 1 in which the portion 1a containing the drug and the portion 1b not containing the drug are alternately provided as in the first embodiment, but the length of the portion 1a containing the drug is the burning time. The length of the chemical-free portion 1b is 20 minutes in terms of burning time. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are the same. 0.09 wt% of dimefluthrin is present in the drug-containing portion 1a. Therefore, the total amount of dimefluthrin in Example 2 is the same as in Comparative Examples 1 and 2 and Example 1. That is, all the incense sticks of Comparative Examples 1 and 2 and Examples 1 and 2 contain the same amount of dimefluthrin. Comparative Example 1 is an example in which a predetermined amount of chemicals is uniformly kneaded into an incense base material, and the chemical evaporation amount of Comparative Example 1 is used as a reference chemical evaporation amount. The method for measuring the amount of chemical evaporation is a well-known method.

As can be seen from FIG. 4, in Comparative Examples 1 and 2, since dimefluthrin is present in the entire incense stick 1, the amount of chemical evaporation is substantially constant from the start of combustion to the end of combustion. On the other hand, in Examples 1 and 2, the amount of chemical evaporation is more than twice the standard amount of chemical evaporation of Comparative Example 1. Further, as compared with Comparative Example 2, Examples 1 and 2 have more than twice the amount of chemical evaporation. This is because a high concentration of dimeflutrin is present in the portion 1a containing the drug, and a large amount of dimeflutrin is transpired by burning the portion 1a containing the drug. This is the first step of the present invention.

When the chemical-containing portion 1a finishes burning, the chemical-free portion 1b begins to burn. This is the second step of the present invention, which is a chemical evaporation step. Since dimefluthrin does not exist in the drug-free portion 1b, the process is such that the drug is not transpired. A small amount of dimefluthrin may be present in the portion of reference numeral 1b. In this case, the chemicals are transpired so that the amount of the chemicals transpired is lower than that in the first step.

FIG. 5 is a graph showing the amount of chemical evaporation of Comparative Examples 3 and 4 and Examples 3 and 4. Comparative Example 3 is a kneaded incense stick formed by uniformly kneading mepafluthrin as a pest control agent into an incense stick base material. In the kneaded incense stick of Comparative Example 3, mepafluthrin is uniformly present throughout. The amount of mepafluthrin contained in the incense stick of Comparative Example 3 is 0.03 wt%.

Comparative Example 4 is a coated incense stick in which mepafluthrin is uniformly applied to the entire upper surface of the incense stick base material. In the applied incense stick of Comparative Example 4, mepafluthrin is uniformly present on the entire upper surface. The amount of mepafluthrin contained in the incense stick of Comparative Example 4 is 0.03 wt%.

Example 3 is a coated incense stick 1 in which a portion 1a containing a drug and a portion 1b not containing a drug are alternately provided. Mepafluthrin is applied to the upper surface of the drug-containing portion 1a, but mepafluthrin is not applied to the drug-free portion 1b. In the incense stick 1 of Example 3, mepafluthrin is present only on the upper surface of the portion 1a containing the drug. The length of the drug-containing portion 1a and the length of the drug-free portion 1b are the same, and the burning time is 10 minutes. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are also the same. 0.06 wt% mepafluthrin is present in the drug-containing portion 1a. Therefore, the total amount of mepafluthrin in Example 3 is the same as in Comparative Examples 3 and 4.

Example 4 is a coated incense stick 1 in which a portion 1a containing a drug and a portion 1b not containing a drug are provided alternately as in the case of Example 3, but the length of the portion 1a containing a drug is the burning time. The length of the portion 1b containing no chemical is 20 minutes in terms of burning time. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are the same. 0.09 wt% mepafluthrin is present in the drug-containing portion 1a. Therefore, the total amount of mepafluthrin in Example 4 is the same as in Comparative Examples 3, 4 and 3. That is, all the incense sticks of Comparative Examples 3 and 4 and Examples 3 and 4 contain the same amount of mepafluthrin. Comparative Example 3 is an example in which a predetermined amount of chemicals is uniformly kneaded into the incense base material, and the chemical evaporation amount of Comparative Example 3 is used as the reference chemical evaporation amount.

As can be seen from FIG. 5, in Comparative Examples 3 and 4, since mepafluthrin is present in the entire incense stick 1, the amount of chemical evaporation is substantially constant from the start of combustion to the end of combustion. On the other hand, in Examples 3 and 4, the amount of chemical evaporation is more than twice the standard amount of chemical evaporation of Comparative Example 3. Further, as compared with Comparative Example 4, Examples 3 and 4 have more than twice the amount of chemical evaporation. This is because a high concentration of mepafluthrin is present in the portion 1a containing the drug, and a large amount of mepafluthrin evaporates when the portion 1a containing the drug is burned.

When the chemical-containing portion 1a finishes burning, the chemical-free portion 1b begins to burn. Since mepafluthrin does not exist in the drug-free portion 1b, the process is such that the drug is not transpired. A small amount of mepafluthrin may be present in the portion of reference numeral 1b.

FIG. 6 is a graph showing the amount of chemical evaporation of Comparative Examples 5 and 6 and Examples 5 and 6. Comparative Example 5 is a kneaded incense stick formed by uniformly kneading plaretrin as a pest control agent into an incense stick base material. In the kneaded incense stick of Comparative Example 5, Praletrin is uniformly present throughout. The amount of praletrin contained in the incense stick of Comparative Example 5 is 0.1 wt%.

Comparative Example 6 is a coated incense stick in which Praletrin is uniformly applied to the entire upper surface of the incense stick base material. In the applied incense stick of Comparative Example 6, plaretrin is uniformly present on the entire upper surface. The amount of praletrin contained in the incense stick of Comparative Example 6 is 0.1 wt%.

Example 5 is a coated incense stick 1 in which a portion 1a containing a drug and a portion 1b not containing a drug are alternately provided. Praletrin is applied to the upper surface of the drug-containing portion 1a, but not to the drug-free portion 1b. In the incense stick 1 of Example 5, plaretrin is present only on the upper surface of the portion 1a containing the drug. The length of the drug-containing portion 1a and the length of the drug-free portion 1b are the same, and the burning time is 10 minutes. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are also the same. 0.2 wt% of Praletrin is present in the drug-containing portion 1a. Therefore, the total amount of Praletrin in Example 5 is the same as in Comparative Examples 5 and 6.

Example 6 is a coated incense stick 1 in which a portion 1a containing a drug and a portion 1b not containing a drug are alternately provided as in Example 5, but the length of the portion 1a containing a drug is the burning time. The length of the portion 1b containing no chemical is 20 minutes in terms of burning time. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are the same. 0.3 wt% of praretrin is present in the drug-containing portion 1a. Therefore, the total amount of Praletrin in Example 6 is the same as in Comparative Examples 5 and 6 and Example 5. That is, all the incense sticks of Comparative Examples 5 and 6 and Examples 5 and 6 contain the same amount of praretrin. Comparative Example 5 is an example in which a predetermined amount of chemicals is uniformly kneaded into the incense base material, and the chemical evaporation amount of Comparative Example 5 is used as the reference chemical evaporation amount.

As can be seen from FIG. 6, in Comparative Examples 5 and 6, since praletrin is present in the entire incense stick 1, the amount of chemical evaporation is substantially constant from the start of combustion to the end of combustion. On the other hand, in Examples 5 and 6, the amount of chemical evaporation is more than twice the amount of standard chemical evaporation of Comparative Example 5. Further, as compared with Comparative Example 6, Examples 5 and 6 have more than twice the amount of chemical evaporation. This is because a high concentration of praletrin is present in the portion 1a containing the drug, and a large amount of praletrin is transpired by burning the portion 1a containing the drug.

When the chemical-containing portion 1a finishes burning, the chemical-free portion 1b begins to burn. Since there is no praletrin in the drug-free portion 1b, the step is to prevent the drug from evaporating. A small amount of praretrin may be present in the portion of reference numeral 1b.

FIG. 7 is a graph showing the amount of chemical evaporation of Comparative Examples 7 and 8 and Examples 7 and 8. Comparative Example 7 is a kneaded incense stick formed by uniformly kneading allethrin as a pest control agent into an incense stick base material. Allethrin is uniformly present in the kneaded incense stick of Comparative Example 7. The amount of allethrin contained in the incense stick of Comparative Example 7 is 0.3 wt%.

Comparative Example 8 is a coated incense stick in which allethrin is uniformly applied to the entire upper surface of the incense stick base material. In the applied incense stick of Comparative Example 8, allethrin is uniformly present on the entire upper surface. The amount of allethrin contained in the incense stick of Comparative Example 8 is 0.3 wt%.

Example 7 is a coated incense stick 1 in which a portion 1a containing a drug and a portion 1b not containing a drug are alternately provided. Allethrin is applied to the upper surface of the drug-containing portion 1a, but allethrin is not applied to the drug-free portion 1b. In the incense stick of Example 7, allethrin is present only on the upper surface of the portion 1a containing the drug. The length of the drug-containing portion 1a and the length of the drug-free portion 1b are the same, and the burning time is 10 minutes. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are also the same. 0.6 wt% allethrin is present in the drug-containing portion 1a. Therefore, the total amount of allethrin in Example 7 is the same as in Comparative Examples 7 and 8.

Example 8 is a coated incense stick 1 in which a portion 1a containing a drug and a portion 1b not containing a drug are alternately provided as in Example 7, but the length of the portion 1a containing a drug is the burning time. The length of the portion 1b containing no chemical is 20 minutes in terms of burning time. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are the same. 0.9 wt% allethrin is present in the drug-containing portion 1a. Therefore, the total amount of allethrin in Example 8 is the same as in Comparative Examples 7, 8 and 7. That is, all the incense sticks of Comparative Examples 7 and 8 and Examples 7 and 8 contain the same amount of allethrin. Comparative Example 7 is an example in which a predetermined amount of chemicals is uniformly kneaded into the incense base material, and the chemical evaporation amount of Comparative Example 7 is used as the reference chemical evaporation amount.

As can be seen from FIG. 7, in Comparative Examples 7 and 8, since allethrin is present in the entire incense stick 1, the amount of chemical evaporation is substantially constant from the start of combustion to the end of combustion. On the other hand, in Examples 7 and 8, the amount of chemical evaporation is more than twice the amount of standard chemical evaporation of Comparative Example 7. Further, even as compared with Comparative Example 8, Examples 7 and 8 have more than twice the amount of chemical evaporation. This is because a high concentration of allethrin is present in the portion 1a containing the drug, and a large amount of allethrin is transpired by burning the portion 1a containing the drug.

When the chemical-containing portion 1a finishes burning, the chemical-free portion 1b begins to burn. Since allethrin does not exist in the portion 1b that does not contain the drug, the process is such that the drug is not evaporated. A small amount of allethrin may be present in the portion of reference numeral 1b.

(Drug concentration in air)
Next, the drug concentration in the air when the incense stick 1 is burned will be described. The drug concentration in the air was measured inside the test chamber 100 shown in FIGS. 8 and 9. The height of the test chamber 100 is 2.5 m, and the width and depth are both 3.6 m. As shown in FIG. 8, the ceiling 100a is provided with two exhaust fans 101 and 101. The exhaust fans 101 and 101 are operated so as to constantly discharge a predetermined amount of air in the test chamber 100. As shown in FIG. 9, windows 102 and 102 are provided on the wall 100b. The windows 102 and 102 are opened so as to have a predetermined opening degree. The ventilation frequency of the test chamber 100 can be changed depending on the opening degree of the exhaust fans 101, 101 and the windows 102, 102. In the test shown below, the exhaust fans 101 and 101 are operated and the openings of the windows 102 and 102 are set so that the ventilation frequency of the test chamber 100 is 10 times per hour. The ventilation rate of 10 times per hour is close to the outdoors. It should be noted that the replacement of the same amount of air as the volume of the test room 100 once per hour is referred to as one ventilation frequency.

The incense stick 1 as a test agent is installed near the floor surface of the test room 100 so as to be in the center of the test room 100 in a plan view. The drug concentration in the air was measured using an atmospheric sampling pump 103 and a solid phase extraction column 104. As shown in FIG. 8, the height of the upper solid-phase extraction column 104 from the floor surface was 1.5 m, and the height of the lower solid-phase extraction column 104 from the floor surface was 0.6 m. In a plan view, the distance between the solid-phase extraction column 104 and the test agent was 0.9 m. The atmospheric sampling pump 103 is SP208-1000 Dual manufactured by GL Sciences. The solid-phase extraction column 104 is InertSep, 50 mg / 1 ml manufactured by GL Sciences. The room temperature of the test room 100 was set to 25 ° C.

FIG. 10 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 1 and 2 and Examples 1 and 2. The line with a repellent rate of 90% indicated by the alternate long and short dash line is the drug concentration at which the probability of repelling mosquitoes is 90%, and if the concentration is higher than this concentration, most mosquitoes can be repelled.

The drug concentration in the air when the incense stick 1 is burning changes as shown in FIG. 10 and the like. The maximum drug concentration in the air when the incense stick 1 is burning is 1.5 times or more the minimum drug concentration, preferably 2.0 times or more. The maximum drug concentration in the air when the incense stick 1 is burning is 8.0 times or less, preferably 6.0 times or less the minimum drug concentration.

The time during which the drug concentration in the air reaches the repellent rate of 90% or more is 40% or more, preferably 45% or more of the total burning time of the incense stick 1. The time during which the drug concentration in the air reaches the repellent rate of 90% or more is 60% or less of the total burning time of the incense stick 1, preferably 55% or less.

The repellent rate is a rate indicating how much the blood-sucking rate when the drug is treated is reduced with respect to the blood-sucking rate when no treatment is performed, and is calculated by, for example, the following equation.

Repellent rate (%) = (CT) / C × 100
C: Blood sucking rate (%) in untreated area
T: Blood sucking rate (%) in the treatment area

The method of calculating the repellent rate will be specifically described. The test insect is a mosquito. It is carried out in a windless constant room of 8 tatami mats under the condition of ventilation rate of 10 times / hr, and the room temperature is set to 28 ° C. Place the test agent (incense stick) in one corner of the constant temperature room, the test agent in the center, and the attraction source (human) on the opposite side of the diagonal line where the test agent is installed. At the same time as the incense stick is ignited, the lid of the container containing 50 test insects is gently opened. The number of blood-sucking insects to humans will be investigated over time for up to 30 minutes after the test insects are released. The untreated group is also investigated in the same manner, and the repellent rate (blood sucking inhibition rate) is calculated by the above formula.

Since the test room 100 is in an environment where air is frequently replaced, the drug concentration in the air did not reach the concentration of 90% of the repellent rate in Comparative Examples 1 and 2. On the other hand, in Examples 1 and 2, the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 90% at the time of evaporation of the drug in the first step. Therefore, the efficacy of the drug can be sufficiently obtained. Since the drug does not evaporate in the second step, the concentration of the repellent rate of 90% is greatly reduced, but in the subsequent first step, the drug evaporates so that the amount of the drug evaporates is more than twice the standard amount of the drug evaporated. Since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 90%, even if a new mosquito invades, most of it can be repelled.

FIG. 11 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 1 and 2 and Examples 9 and 10. Example 9 is the same coated incense stick as in Example 1, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 5 in terms of burning time. Minutes. Example 10 is the same coated incense stick as in Example 2, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 10 in terms of burning time. Minutes. Also in Examples 9 and 10, since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 90% at the time of evaporation of the drug in the first step, the efficacy of the drug can be sufficiently obtained. Since the drug does not evaporate in the second step, the concentration of the repellent rate of 90% is greatly reduced, but in the subsequent first step, the drug evaporates so that the amount of the drug evaporates is more than twice the standard amount of the drug evaporated. Since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 90%, even if a new mosquito invades, most of it can be repelled.

FIG. 12 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 3 and 4 and Examples 3 and 4. Also in Examples 3 and 4, since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 90% at the time of evaporation of the drug in the first step, the efficacy of the drug can be sufficiently obtained. Since the drug does not evaporate in the second step, the concentration of the repellent rate of 90% is greatly reduced, but in the subsequent first step, the drug evaporates so that the amount of the drug evaporates is more than twice the standard amount of the drug evaporated. Since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 90%, even if a new mosquito invades, most of it can be repelled.

FIG. 13 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 3 and 4 and Examples 11 and 12. Example 11 is the same coated incense stick as in Example 3, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 5 in terms of burning time. Minutes. Example 12 is the same coated incense stick as in Example 4, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 10 in terms of burning time. Minutes. Also in Examples 11 and 12, since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 90% at the time of evaporation of the drug in the first step, the efficacy of the drug can be sufficiently obtained. Since the drug does not evaporate in the second step, the concentration of the repellent rate of 90% is greatly reduced, but in the subsequent first step, the drug evaporates so that the amount of the drug evaporates is more than twice the standard amount of the drug evaporated. Since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 90%, even if a new mosquito invades, most of it can be repelled.

FIG. 14 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 5 and 6 and Examples 5 and 6. In Example 5, the drug concentration in the air greatly exceeded the repellent rate of 80% during the chemical evaporation in the first step, and in Example 6, the drug concentration in the air during the chemical evaporation in the first step greatly exceeded the repellent rate. Since the concentration greatly exceeds 90%, the efficacy of the drug is sufficiently obtained. Since the drug does not evaporate in the second step, the concentration of the repellent rate of 80% is greatly reduced, but in the subsequent first step, the drug evaporates so that the amount of the drug evaporates is more than twice the standard amount of the drug evaporated. In Example 5, the concentration of the drug in the air greatly exceeds the repellent rate of 80%, and in Example 6, the concentration of the repellent rate greatly exceeds 90%. Therefore, even if a new mosquito invades, most of them are repelled. can do.

FIG. 15 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 5 and 6 and Examples 13 and 14. Example 13 is the same coated incense stick as in Example 5, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 5 in terms of burning time. Minutes. Example 14 is the same coated incense stick as in Example 6, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 10 in terms of burning time. Minutes. Even in Examples 13 and 14, since the concentration of the repellent rate of 80% is greatly exceeded, the efficacy of the drug can be sufficiently obtained. Since the drug does not evaporate in the second step, the concentration of the repellent rate of 80% is greatly reduced, but in the subsequent first step, the drug evaporates so that the amount of the drug evaporates is more than twice the standard amount of the drug evaporated. Since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 80%, even if a new mosquito invades, most of it can be repelled.

FIG. 16 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 7 and 8 and Examples 7 and 8. In Examples 7 and 8, since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 80% at the time of evaporation of the drug in the first step, the efficacy of the drug can be sufficiently obtained. Since the drug does not evaporate in the second step, the concentration of the repellent rate of 80% is greatly reduced, but in the subsequent first step, the drug evaporates so that the amount of the drug evaporates is more than twice the standard amount of the drug evaporated. As a result, in Examples 7 and 8, the drug concentration in the air greatly exceeds the repellent rate of 80%, so that even if a new mosquito invades, most of them can be repelled.

FIG. 17 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 7 and 8 and Examples 15 and 16. Example 15 is the same coated incense stick as in Example 7, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 5 in terms of burning time. Minutes. Example 16 is the same coated incense stick as in Example 8, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 10 in terms of burning time. Minutes. Even in Examples 15 and 16, since the concentration of the repellent rate of 80% is greatly exceeded, the efficacy of the drug can be sufficiently obtained. Since the drug does not evaporate in the second step, the concentration of the repellent rate of 80% is greatly reduced, but in the subsequent first step, the drug evaporates so that the amount of the drug evaporates is more than twice the standard amount of the drug evaporated. Since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 80%, even if a new mosquito invades, most of it can be repelled.

FIG. 18 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 9, 10 and Examples 17 and 18. Comparative Example 9 is a kneaded incense stick formed by uniformly kneading d-allethrin as a pest control agent into an incense stick base material. The amount of d-allethrin contained in the incense stick of Comparative Example 9 is 0.9 wt%. Comparative Example 10 is a coated incense stick in which d-allethrin is uniformly applied to the entire upper surface of the incense stick base material. The amount of d-allethrin contained in the incense stick of Comparative Example 10 is 0.9 wt%.

Example 17 is an allethrin 1 in which a portion 1a containing a drug and a portion 1b not containing a drug are alternately provided as shown in FIGS. 1 and 2, and the upper surface of the portion 1a containing the drug is covered with the incense stick 1. , D-allethrin is applied, but d-allethrin is not applied to the portion 1b that does not contain the drug. The length of the drug-containing portion 1a and the length of the drug-free portion 1b are the same, and the burning time is 10 minutes. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are also the same. 0.6 wt% d-allethrin is present in the drug-containing portion 1a. Therefore, the total amount of d-allethrin in Example 17 is the same as in Comparative Examples 1 and 2.

Example 18 is a coated incense stick 1 in which a portion 1a containing a drug and a portion 1b not containing a drug are alternately provided as in the case of Example 17, but the length of the portion 1a containing a drug is the burning time. The length of the chemical-free portion 1b is 20 minutes in terms of burning time. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are the same. 0.9 wt% d-allethrin is present in the drug-containing portion 1a. Therefore, the total amount of d-allethrin in Example 18 is the same as in Comparative Examples 1 and 2 and Example 1.

In Examples 17 and 18, since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 90% at the time of evaporation of the drug in the first step, the efficacy of the drug can be sufficiently obtained. Since the drug does not evaporate in the second step, the concentration of the repellent rate of 90% is greatly reduced, but in the subsequent first step, the drug evaporates so that the amount of the drug evaporates is more than twice the standard amount of the drug evaporated. As a result, in Examples 17 and 18, the drug concentration in the air greatly exceeds the repellent rate of 90%, so that even if a new mosquito invades, most of them can be repelled.

FIG. 19 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 9, 10 and Examples 19 and 20. Example 19 is the same coated incense stick as in Example 17, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 5 in terms of burning time. Minutes. Example 20 is the same coated incense stick as in Example 18, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 10 in terms of burning time. Minutes. In Examples 19 and 20, when about 20 minutes have passed from the start of combustion, the concentration of the repellent rate of 90% is greatly exceeded, so that the efficacy of the drug can be sufficiently obtained. Since the drug does not evaporate in the second step, the concentration of the repellent rate of 90% is greatly reduced, but in the subsequent first step, the drug evaporates so that the amount of the drug evaporates is more than twice the standard amount of the drug evaporated. Since the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 90%, even if a new mosquito invades, most of it can be repelled.

FIG. 20 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 11 and 12 and Examples 21 and 22. Comparative Example 11 is a kneaded incense stick formed by uniformly kneading d-trans-allethrin (EBT) as a pest control agent into an incense base material. The amount of d-trans-allethrin contained in the incense stick of Comparative Example 11 is 0.3 wt%. Comparative Example 12 is a coated incense stick in which d-trans-allethrin is uniformly applied to the entire upper surface of the incense stick base material. The amount of d-trans-allethrin contained in the incense stick of Comparative Example 11 is 0.3 wt%.

Example 21 is an allethrin 1 in which a portion 1a containing a drug and a portion 1b not containing a drug are alternately provided as shown in FIGS. 1 and 2, and the upper surface of the portion 1a containing the drug is covered with the incense stick 1. , D-trans-allethrin is applied, but d-trans-allethrin is not applied to the drug-free portion 1b. The length of the drug-containing portion 1a and the length of the drug-free portion 1b are the same, and the burning time is 10 minutes. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are also the same. 0.6 wt% d-trans-allethrin is present in the drug-containing portion 1a. Therefore, the total amount of d-trans-allethrin in Example 21 is the same as in Comparative Examples 1 and 2.

Example 22 is a coated incense stick 1 in which a portion 1a containing a drug and a portion 1b not containing a drug are alternately provided, as in the case of Example 21, but the length of the portion 1a containing a drug is the burning time. The length of the chemical-free portion 1b is 20 minutes in terms of burning time. Further, the number of the drug-containing portion 1a and the number of the drug-free portion 1b are the same. 0.9 wt% d-trans-allethrin is present in the drug-containing portion 1a. Therefore, the total amount of d-trans-allethrin in Example 22 is the same as in Comparative Examples 1 and 2 and Example 1.

In Examples 21 and 22, the drug concentration in the air greatly exceeds the concentration of the repellent rate of 90% at the time of the drug evaporation in the first step from the time when 30 minutes have passed from the start of combustion, so that the drug's efficacy can be sufficiently obtained. .. Since the drug does not evaporate in the second step, the concentration of the repellent rate of 90% is greatly reduced, but in the subsequent first step, the drug evaporates so that the amount of the drug evaporates is more than twice the standard amount of the drug evaporated. As a result, in Examples 21 and 22, the drug concentration in the air greatly exceeds the repellent rate of 90%, so that even if a new mosquito invades, most of them can be repelled.

FIG. 21 is a graph showing the measurement results of the drug concentration in the air for each of Comparative Examples 11 and 12 and Examples 23 and 24. Example 23 is the same coated incense stick as in Example 21, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 5 in terms of burning time. Minutes. Example 22 is the same coated incense stick as in Example 22, but the length of the portion 1a containing the drug is 5 minutes in terms of burning time, and the length of the portion 1b not containing the drug is 10 in terms of burning time. Minutes. In Examples 23 and 24, since the concentration of the repellent rate of 80% is greatly exceeded from the time when 10 minutes have passed from the start of combustion, the efficacy of the drug can be sufficiently obtained. Since the chemicals do not evaporate in the second step, the concentration of the chemicals in the air is lower than that in the first step, but in the subsequent first step, the amount of chemicals evaporated is more than twice the standard amount of chemicals evaporated. Since the drug evaporates and the concentration of the drug in the air greatly exceeds the concentration of the repellent rate of 80%, even if a new mosquito invades, most of it can be repelled.

The above-mentioned test result of the drug concentration in the air is a result under the condition that the ventilation frequency is 10 times, but the same tendency is obtained even if the ventilation frequency is 8 times or 9 times.

(Action effect)
As described above, according to the incense stick 1 and the drug evaporation method using the incense stick 1 according to the present embodiment, the chemicals are transpired so that the chemical evaporation amount is twice or more the reference chemical evaporation amount in the first step. Therefore, the concentration of the drug in the air is rapidly increased even in an environment where the air is frequently replaced, so that the efficacy of the drug can be sufficiently obtained. After that, in the second step, the chemicals are evaporated so that the chemical evaporation amount is less than the reference chemical evaporation amount, or the chemicals are not evaporated, so that the total amount of the chemicals applied to the incense stick 1 is reduced. Further, since the first step and the second step are repeated a plurality of times, even if a large amount of chemicals are discharged from the room due to the replacement of air, the chemical evaporation is more than twice the standard chemical evaporation amount in the subsequent first step. The drug evaporates in an amount so that the efficacy of the drug can be sufficiently obtained. Since this is continued during the burning of the incense stick, for example, for several hours or more, the effect of the chemical agent can be obtained for a long time even in an environment where the air is frequently replaced without containing a large amount of the chemical agent in the incense stick 1. Can be done.

The above embodiments are merely exemplary in all respects and should not be construed in a limited way. Furthermore, all modifications and modifications that fall within the equivalent scope of the claims are within the scope of the present invention.

As described above, the incense stick and the method of transpiring the drug using the incense stick according to the present invention can be used, for example, in a room with a large number of ventilations or in an environment close to the outdoors.

1 Incense stick

Claims (9)

In the method of transpiring chemicals using incense sticks,
The first step of evaporating the drug so as to be at least twice the reference drug evaporation amount, which is the drug evaporation amount when a predetermined amount of the drug is uniformly kneaded into the incense substrate, and the first step. The second step of evaporating the drug or not evaporating the drug is repeated a plurality of times so that the amount of the drug evaporated is lower than that of the first step.
A method for evaporating a drug, which comprises setting the maximum drug concentration in the air when the incense stick is burning to 1.5 times or more the minimum drug concentration. In the method for transpiring the drug according to claim 1,
A method for evaporating a drug, which comprises repeating the first step and the second step twice or more per hour. In the method for transpiring the drug according to claim 1 or 2.
A method for evaporating a drug, which comprises repeating the first step and the second step in a room where the ventilation rate is 8 times or more per hour. In the method for transpiring a drug according to any one of claims 1 to 3.
A method for transpiring a drug, wherein the drug is a pest control agent. In the method for transpiring the drug according to claim 4.
A method for transpiring an agent, wherein the pest control agent contains at least one of dimefluthrin, mepafluthrin, prarethrin, d-allethrin and d-trans-allethrin. In the method for transpiring a drug according to any one of claims 1 to 5.
A method for evaporating a drug, which comprises using an incense stick obtained by applying the drug to the incense base material. In incense sticks containing transpirational agents
The first step of evaporating the drug so as to be at least twice the reference drug evaporation amount, which is the drug evaporation amount when a predetermined amount of the drug is uniformly kneaded into the incense substrate, and the first step. The incense is characterized in that the second step of evaporating the drug or not evaporating the drug can be repeated a plurality of times so that the amount of the drug evaporated is lower than that of one step. In the incense stick according to claim 7.
An incense stick having a portion in which the drug is applied to the incense base material and a portion in which the drug is not applied to the incense base material. In the incense stick according to claim 8.
The incense stick is characterized in that the drug is applied only to one surface of the incense stick base material.

Images