JP2019034888A - Incense stick and manufacturing method therefor - Google Patents

Abstract

To enhance an effect by an agent contained in an incense stick.SOLUTION: In an incense stick 1 containing an agent in an incense stick substrate 2, 40% or more of the agent contained in whole incense stick substrate 2 is contained in a substrate outer layer part 2a having thickness of 1/16 of total thickness of the incense stick substrate 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an incense stick containing a volatile chemical and a method for producing the incense stick.

  Generally, what is called a mosquito-repelling incense stick is known as an incense stick for controlling a pest (see, for example, Patent Documents 1 to 5).

  In Patent Document 1, an inorganic layer obtained by blending an inorganic substance such as clay with an insecticide such as pyrethroid is formed to a thickness of 1/3 or less of the thickness of the base layer, and the inorganic layer is formed on the base layer. It is disclosed that it is provided on a part or all of the lower side or the side surface.

  Patent Documents 2 to 4 disclose that a mixture of an ester compound represented by a predetermined chemical formula and a chain saturated hydrocarbon solvent or an alicyclic saturated hydrocarbon solvent is applied to an incense stick substrate. .

  In Patent Document 5, a liquid in which an insecticide containing an insecticide is mixed with a room-temperature hardly volatile component is produced, and the liquid containing the room-temperature hardly volatile component is treated on the treated surface of the incense stick substrate. It is disclosed.

Japanese Examined Patent Publication No. 46-28119 JP 2005-200403 A JP 2005-298477 A JP 2006-256991 A Japanese Patent No. 4183790

  In Patent Document 1, the insecticide is provided in layers on the base layer or the like, but in the case of an incense stick, the insecticide is easily affected by the heat of burning the incense stick base material, It is considered that heat has an effect on the insecticidal efficacy, and even if an insecticide is provided in layers as in Patent Document 1, the extent of the insecticidal efficacy is not described in Patent Document 1 and is unknown. is there.

  Moreover, when applying the insecticide to the incense base material as in Patent Documents 2 to 4, the distribution of the insecticide in the incense base material depth direction will be determined, and when the incense base material burns There is a risk that the insecticidal efficacy will be affected by the effects of heat.

  Moreover, some incense sticks contain a fragrance in addition to the insecticide, and even in such an incense stick, there is a demand for obtaining a sufficient effect while reducing the contained fragrance as much as possible.

  This invention is made | formed in view of this point, The place made into the objective is to raise the effect by the chemical | medical agent contained in an incense stick.

  In order to achieve the above object, in the present invention, 40% or more of the drug is unevenly distributed in the outer layer portion of the base material.

  1st invention WHEREIN: In the incense in which the chemical | medical agent was contained in the incense stick base material, the said chemical | medical agent contained in the whole said incense stick base material in the base-material outer layer part which has thickness of 1/16 of the total thickness of the said incense stick base material. 40% or more is included.

  According to this configuration, 40% or more of the drug is unevenly distributed in the base material outer layer portion. The thickness of the base material outer layer portion is 1/16 of the total thickness of the incense stick base material, and is sufficiently thin with respect to the total thickness. The fact that 40% or more of the drug is unevenly distributed in the base material outer layer part of 1/16 of the total thickness makes it easy for the drug to evaporate from the base material outer layer part during combustion, and the heat during combustion adversely affects the drug. It becomes difficult to give. Therefore, the efficacy by the drug is increased.

  According to a second invention, in the first invention, the base material outer layer portion contains 60% or more of the medicine contained in the whole incense stick base material.

  According to this structure, since more chemical | medical agent is more easily volatilized from the base-material outer layer part at the time of combustion, the efficacy by a chemical | medical agent further increases.

  According to a third aspect of the present invention, in the incense in which an incense stick is contained in the incense base material, the base material outer layer portion having a thickness of 1/8 of the total thickness of the incense stick base material includes It is characterized by containing 60% or more.

  According to this configuration, 60% or more of the drug is unevenly distributed in the base material outer layer portion. The thickness of the base material outer layer portion is 1/8 of the total thickness of the incense stick base material, and is sufficiently thin with respect to the total thickness. By having 60% or more of the drug unevenly distributed in the base material outer layer portion of 1/8 of the total thickness, the drug is likely to volatilize from the base material outer layer portion during combustion, and the heat during combustion adversely affects the drug. It becomes difficult to give. Therefore, the efficacy by the drug is increased.

  A fourth invention is characterized in that, in any one of the first to third inventions, the drug is impregnated on one of a front surface side and a back surface side of the incense stick base material.

  According to this structure, since the chemical | medical agent should just impregnate one side of the incense stick base material in the surface side and back side in the incense stick manufacturing process, manufacturing equipment becomes simple.

  According to a fifth aspect of the present invention, there is provided a method for producing an incense stick comprising an incense base material, wherein the liquid form of the incense base material is applied to the incense base material and has a thickness of 1/16 of the total thickness of the incense stick base material. 40% or more of the said chemical | medical agent contained in the whole said incense stick base material is included in a material outer layer part, It is characterized by the above-mentioned.

  According to a sixth aspect of the present invention, there is provided a method for manufacturing an incense stick comprising an incense base material, wherein the liquid form medicine is applied to the incense base material, and the base has a thickness of 1/8 of the total thickness of the incense base material. 60% or more of the said chemical | medical agent contained in the whole said incense stick base material is included in a material outer layer part, It is characterized by the above-mentioned.

  According to the first invention, since 40% or more of the drug is contained in the base material outer layer portion having a thickness of 1/16 of the total thickness of the incense stick base material, the adverse effect of heat during combustion on the drug is present. And can increase the efficacy of the drug.

  According to the second aspect, since the outer layer portion of the base material contains 60% or more of the drug, the potency of the drug can be further increased.

  According to the third invention, since 60% or more of the medicine is contained in the base material outer layer portion having a thickness of 1/8 of the total thickness of the incense stick base material, the adverse effect of heat upon combustion is exerted on the medicine. And can increase the efficacy of the drug.

  According to the fourth invention, in the incense stick manufacturing process, the medicine may be impregnated on one of the front side and the back side of the incense stick base, so that the manufacturing equipment can be simplified and the cost can be reduced. be able to.

It is sectional drawing of the incense stick which concerns on embodiment.

  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 merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 shows a cross section of an incense stick 1 according to an embodiment of the present invention. The cross section shown in FIG. 1 is a cross section in a direction orthogonal to the direction in which the incense stick 1 extends. The incense stick 1 may have, for example, a linearly extending shape or a spirally extending shape, and the shape is not particularly limited. Moreover, about the cross-sectional shape of the incense stick 1, it can be set as various shapes, such as a rectangular cross section, a circular cross section, and an elliptical cross section. In this embodiment, the incense stick 1 has a shape extending in a spiral shape, and its cross-sectional shape is a shape close to a rectangle as shown in FIG. 1, and four corners are shapes close to an arc. In addition, the broken lines shown by reference numerals L1 and L2 in FIG. 1 are only described for convenience of explanation when explaining the distribution of medicines to be described later, and are lines that the actual incense stick 1 does not have. .

  The incense stick 1 is one in which a volatile chemical is contained in the incense stick base material 2, and examples of the volatile chemical include an insecticide and various fragrances. Pesticides include, Thrin, tetraflumethrin and the like can be mentioned.

  The incense stick base material 2 includes at least a combustible combustion material such as wood powder, paper, and pulp, and a binder made of corn starch or the like for hardening the combustion material. The incense stick substrate 2 may contain a coloring agent or the like.

  The incense stick 1 is manufactured such that the concentration distribution of the volatile chemical is nonuniform in the depth direction of the incense stick base material 2. That is, 40% or more of the volatile chemical contained in the entire incense stick base material 2 is contained in the base outer layer portion 2a having a thickness T2 that is 1/16 of the total thickness T1 of the incense stick base material 2. The base material outer layer portion 2a is a portion between the outer surface of the incense stick base material 2 and the broken line L1, and the entire surface (upper face in FIG. 1), side face, and rear face (lower face in FIG. 1) of the incense stick base material 2. Are provided. The broken line L1 is shown in order to specify the range of the thickness of 1/16 of the total thickness T1 of the incense stick base material 2, and is a frame-like line similar to the cross-sectional shape of the incense stick base material 2. It is preferable that 50% or more of the volatile drug contained in the entire incense base material 2 is contained in the base material outer layer portion 2a, and 60% or more of the volatile drug contained in the entire incense base material 2 is contained. More preferably, it is contained in the base material outer layer part 2a. For example, when the total thickness T1 of the incense stick base material 2 is 4 mm, the thickness T2 that is 1/16 of the total thickness T1 is 0.25 mm, so the thickness of the base outer layer portion 2a is 0.25 mm. In this case, the portion excluding the base material outer layer portion 2a of the incense stick base material 2 becomes an inner layer portion, and the inner layer portion contains the remainder of the volatile drug. T2 is preferably 0.3 mm or less, and more preferably 0.25 mm or less.

  Moreover, it is the structure by which 60% or more of the volatile chemical | medical agent contained in the whole incense base material 2 is contained in the base-material outer-layer part 2b which has thickness T3 of 1/8 of the total thickness T1 of the incense base material 2. May be. In this case, the base material outer layer portion 2b is a portion between the outer surface of the incense stick base material 2 and the broken line L2, and is provided over the entire surface, side surface, and back face of the incense stick base material 2. The broken line L2 is shown in order to specify the range of the thickness of 1/8 of the total thickness T1 of the incense stick base material 2, and is a frame-like line similar to the cross-sectional shape of the incense stick base material 2, and is inside the broken line L1. Is located. For example, when the total thickness T1 of the incense stick substrate 2 is 4 mm, the thickness T3 that is 1/8 of the total thickness T1 is 0.5 mm, and thus the thickness of the base outer layer portion 2b is 0.5 mm. In this case, the portion excluding the base material outer layer portion 2b of the incense stick base material 2 becomes an inner layer portion, and the inner layer portion contains the remainder of the volatile drug.

  A volatile chemical | medical agent may be made to impregnate only one of the surface side and back surface side of the incense stick base material 2, and may be made to impregnate both the surface side and back surface side of the incense stick base material 2. Moreover, you may make it impregnate a volatile chemical | medical agent in the surface side, a back surface side, and a side surface.

(Manufacturing method of incense stick 1)
Next, the manufacturing method of the incense stick 1 comprised as mentioned above is demonstrated. First, the incense stick base material 2 and a liquid medicine are prepared. The liquid drug contains the volatile drug and a solvent. Examples of the solvent include normal paraffin such as parasol 134, hexane, ethanol, water, and the like, and any one or more of them can be used in combination. The amount of the volatilizing agent can be set to about 3.75 mg per incense stick, for example, but is not limited thereto, and can be arbitrarily set in consideration of the efficacy.

  And a liquid chemical | medical agent is apply | coated to the incense stick base material 2 prepared beforehand, and it is contained in the whole incense stick base material 2 in the base-material outer-layer part 2a which has the thickness of 1/16 of the total thickness of the incense stick base material 2. Contain at least 40% of the drug. This can be achieved by the type of solvent, the degree of drug dilution depending on the amount of solvent, and the like.

  Moreover, a liquid chemical | medical agent is apply | coated to the incense stick base material 2 prepared beforehand, and it is contained in the whole incense stick base material 2 in the base-material outer-layer part 2b which has the thickness of 1/8 of the total thickness of the incense stick base material 2. You may make it contain 60% or more of a chemical | medical agent. This can also be realized by the type of solvent, the degree of drug dilution depending on the amount of solvent, and the like.

  Table 1 shows that 40% or more of the medicine contained in the entire incense stick base material 2 is included in the base material outer layer part 2a, or 60% or more of the medicine contained in the whole incense stick base material 2 in the base material outer layer part 2b. It shows about the concrete method of including, and the result. The “kneading production method” in Table 1 is a production method for obtaining an incense stick by kneading 3.75 mg of dimefluthrin as a volatilizing agent into a wood powder or a binder constituting the incense stick base material and then hardening it. The amount of wood flour kneaded with 3.75 mg of dimethylfluthrin is the amount of one common spiral incense stick. In the case of an incense stick obtained by this kneading method, the concentration of dimethylfluthrin becomes substantially uniform in the depth direction. In the inner layer portion, there is an amount obtained by subtracting the amount of the base layer outer layer portion 2b from the total dose (3.75 mg). The dose can be expressed in wt%.

  In the case where the solvent is n paraffin (normal paraffin), specifically, parasol 134, 40% or more of dimefluthrin contained in the entire incense base material 2 is included in the base material outer layer portion 2a. Similarly, when the solvent is water, ethanol, or hexane, the base material outer layer portion 2a contains 40% or more of dimethylfluthrin contained in the entire incense stick base material 2. When the solvent is water, ethanol, or hexane, the base material outer layer portion 2b contains 60% or more of dimethylfurin contained in the entire incense stick base material 2. Moreover, the density | concentration of a volatile chemical | medical agent is so deep that it is close to the outer surface of the incense stick base material 2 regardless of which solvent.

  In addition, when calculating | requiring the quantity of the volatile chemical | medical agent contained in base-material outer-layer part 2a, 2b, it corresponds to the thickness of base-material outer-layer part 2a, 2b first, measuring the thickness of a base material with a caliper. The amount is scraped off and the amount of drug contained in the scraped portion is measured using gas chromatography. The amount of the drug contained in the portion (inner layer portion) other than the base material outer layer portions 2a and 2b is also measured.

(Effect of embodiment)
“Effective transpiration rate (%)” in Table 1 is a value indicating how much dimefluthrin contained in the incense stick 1 was volatilized in a state where the incense stick 1 was effective when the incense stick 1 was burned. is there. If the effective transpiration rate is 100%, all of the dimefluthrin contained in the incense stick 1 has been volatilized in a state where it is effective, and if it is 0%, the dimefluthrin contained in the incense stick 1 All were ineffective. As a measuring method, for example, all the gas discharged by burning the incense stick 1 is collected, and the amount of dimethylfluthrin is measured using a measuring instrument such as gas chromatography. And the ratio of the quantity of the collect | recovered dimefluthrins with respect to the dimefluthrin contained in the burned part of the incense stick 1 can be calculated | required, and it can be made into an effective transpiration rate.

  As is apparent from Table 1, the kneading method had an effective transpiration rate of 70%, whereas the coating method and the base material outer layer part 2a or the base material outer layer part 2b had a predetermined or higher volatilizing agent. When present, the effective transpiration rate is 79% or more. Therefore, by making the base material outer layer portion 2a or the base material outer layer portion 2b largely unevenly distributed, the chemical is easily volatilized from the base material outer layer portions 2a and 2b at the time of combustion, and the heat at the time of combustion with respect to the volatile chemical. It becomes difficult to have an adverse effect. Therefore, the efficacy by a volatile chemical | medical agent increases.

  Moreover, although the said embodiment demonstrated the case where a volatile chemical | medical agent is a dimefluthrin, even if a volatile chemical | medical agent is a transfluthrin, an allethrin, etc., it will become the same result. Moreover, when a volatile chemical | medical agent is a fragrance | flavor, the efficacy of a fragrance | flavor can be improved.

  The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the present invention can be used for, for example, insecticidal incense sticks and aromatic incense sticks.

DESCRIPTION OF SYMBOLS 1 Incense stick 2 Incense stick base material 2a Base material outer layer part 2b Base material outer layer part

Claims (6)

In an incense stick that contains a volatile drug in the incense stick base material,
An incense stick characterized in that 40% or more of the drug contained in the entire incense stick base material is contained in a base material outer layer portion having a thickness of 1/16 of the total thickness of the incense stick base material. The incense stick according to claim 1,
An incense stick characterized in that 60% or more of the drug contained in the entire incense stick base material is contained in the base material outer layer portion. Incense incense in which an incense stick contains a drug,
The incense stick characterized by 60% or more of the said chemical | medical agent contained in the whole said incense stick base material being contained in the base-material outer-layer part which has the thickness of 1/8 of the total thickness of the said incense stick base material. The incense stick according to any one of claims 1 to 3,
An incense stick, wherein the medicine is impregnated on one of the front side and the back side of the incense base material. In the method for producing an incense stick in which an agent is contained in an incense stick base material,
Applying the liquid medicine to the incense stick base material, and adding 40% or more of the medicine contained in the whole of the incense stick base material to the base material outer layer part having a thickness of 1/16 of the total thickness of the incense stick base material. A method for producing an incense stick, comprising: In the method for producing an incense stick in which an agent is contained in an incense stick base material,
Applying the liquid medicine to the incense base material, and adding 60% or more of the medicine contained in the whole incense base material to the base material outer layer portion having a thickness of 1/8 of the total thickness of the incense base material. A method for producing an incense stick, comprising:

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