JP2012144502A - Insect repellent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insect repellent for clothing, which has good usability in real use scenes and exhibits a stable effect as the insect repellent, and further, can be widely used without being limited to one application location.SOLUTION: The insect repellent for clothing is obtained by packaging a medicine holding body made of a solid carrier with an air-permeable material. The medicine holding body is packaged with the air-permeable material at an apparent volume ratio of 18 to 60%. The air-permeable material is made of a nonwoven fabric whose bending resistance upon measurement by a 45 degree cantilever method is 50 to 100 mm, and, as the solid carrier, beads made of cellulose with the average particle diameter of 2 to 6 mm are used.

Description

The present invention relates to an insect repellent used for clothing pests.

Conventionally, various insect repellents have been put to practical use in clothing storage boxes and closets, such as drawers and closets, to protect textile products from garment pests such as moths, cutworms, and stains. Yes. For western chests and closets, gels and liquids are resembling insect repellents and fragrances that are hung on a hanger with a medicine holder that absorbs liquid insect repellents in a plastic container. There are insect repellents of the formula. On the other hand, for clothing storage boxes such as drawers and closets for Japanese chests, a chemical holder that absorbs a sublimable solid insect repellent or liquid insect repellent is stored in a plastic container, or Japanese paper or Use a non-woven fabric or other packaged item in the vicinity of clothing. In this case, various shapes such as a sheet shape, a plate shape, and a granular shape can be considered as the shape of the drug holding body, but among these, a larger surface area can be expected from the granular shape, which is advantageous from the viewpoint of volatilization. It is thought that there is. As an example of the form of the insect repellent of such a granular medicine holder, utility model No. 2597878 (Patent Document 1) discloses a flexible packaging having air permeability by impregnating a granular liquid-absorbing material with a medicine. A clothing insect repellent pack in the form of a bag of wood is disclosed. Here, it is characterized in that it is flexible so that the shape of the pack itself can be freely deformed by adjusting the size and number of granular liquid-absorbing liquids (beads) packed in the pack.

In addition, JP 2009-51832 A (Patent Document 2) discloses an insect repellent in which a granular pulp impregnated with a vegetable essential oil as an active ingredient is enclosed in a packaging material that does not substantially permeate the active ingredient. Yes.
Each of these is a product in which a granular carrier holding a drug is packed in a bag. In such a form, it is always effective in a practical situation as long as the granular drug holder is in a flexible state. We realized that wasn't the case. In other words, due to the degree of flexibility, depending on the installation situation of the insect repellent, the packaging material is too soft and the touch and workability are poor, or the granular drug carrier as the content is biased, resulting in the volatilization of a uniform active ingredient. There was a problem of affecting. In addition, since the shape is lacking in stability, there is a problem that it is difficult to install depending on the use situation, for example, the granular drug holder as a content is biased in a standing state.

Utility Model No. 2597878 JP 2009-51832 A

An object of the present invention is an insect repellent for clothing, in which a drug holder in which an active ingredient is absorbed is packaged with a breathable material, is easy to use in actual use and exhibits a stable insect repellent effect. It is to provide an insect repellent that can be widely used without being limited to the application site.

The present invention can be realized by adjusting the filling amount of the drug carrier, which is a solid carrier holding the drug, into the nonwoven fabric bag, the material properties of the nonwoven bag, and the size of the solid carrier that is the drug carrier. It started with the realization that an insect repellent with good workability and a stable effect could be produced in the use situation of.
That is, the present inventors have found that the following configuration has an excellent effect for achieving the above object.
(1) An insect repellent for clothing in which a drug holder in which an active ingredient is held on a solid carrier is packaged with a breathable material, wherein the drug holder has an apparent volume ratio of 18 to 60% in the breathable material. Insect repellent for clothing (2) characterized in that the breathable material is a non-woven fabric, and the bending resistance when measured by a 45 degree cantilever method is 50 to 100 mm ( 1) The insect repellent for clothing as described.
(3) The insect repellent for clothing according to (1) or (2), wherein the material of the breathable material is a nonwoven fabric of polyester, polyethylene or polypropylene on which paper may be laminated.
(4) As the solid carrier, cellulose beads having an average particle diameter of 2 to 6 mm, an apparent specific gravity of 0.10 to 0.35, and charcoal may be blended, and p-menthane-3 as an active ingredient The insect repellent for clothing according to any one of (1) to (3), wherein at least one of 1,8-diol and terpineol is contained.

In the insect repellent for clothing according to the present invention, a drug holder in which an active ingredient is held in a solid carrier having a specific particle size is packaged with a breathable material having a specific bending resistance at a specific apparent volume ratio. Regardless of where it is installed, it can exhibit a reasonably stable shape and sustained volatilization. In addition, the insect repellent for clothing of the present invention is not only as an insect repellent for drawers, but also in a clothes case, etc. A stable insect repellent effect can be exhibited even when placed vertically.

Hereinafter, the insect repellent of the present invention will be described in detail.
The insect repellent for clothing of the present invention encloses a solid carrier having a specific particle size containing an active ingredient in a breathable material having a specific bending resistance when measured by a 45-degree cantilever method. By filling with a specific apparent volume ratio, the drug holding body has an appropriate mobility without being biased in the bag-like body even after encapsulation, and exhibits a stable volatility.

The insect repellent for clothing of the present invention is manufactured by packaging a drug holding body in which an active ingredient is held on a solid carrier by various methods with a breathable material. Such an insect repellent may be installed in any direction in the upper or lower part of the clothes in the chest drawer, in the vicinity thereof, or in the clothes case, and the insect repellent component may be volatilized from the medicine holder.
Examples of the solid carrier include fibrous carriers such as pulp, linter and rayon, cellulose (regenerated cellulose) beads or foams, inorganic carriers such as silicate, silica and zeolite, and sublimable solids such as trioxane and adamantane. Among them, cellulose beads having an average particle diameter of 2 to 6 mm and an apparent specific gravity of about 0.10 to 0.35 are preferable, and a deodorizing effect can be imparted by using a bead blended with charcoal. In addition, what is necessary is just to determine the quantity of the charcoal mix | blended suitably in the range of 5-70 mass% with respect to the bead made from a cellulose.

The drug carrier in which the drug is held on the solid carrier is preferably filled in an apparent volume ratio of 18 to 60%, more preferably 25 to 25%, relative to the package of the air-permeable material described later. The ratio is 40%.
The apparent volume ratio referred to in the present invention is the weight of the drug holder actually filled when the total weight of the drug holder is 100% when the drug holder is fully filled in the package of the air-permeable material. The ratio. If the apparent volume ratio is less than 18%, the contents in the bag are biased, and there may be a difference in the insect-proof effect depending on the installation state. In addition, when the bag stands up, the situation can be remarkable. When the apparent volume ratio exceeds 60%, the flexibility of the bag of breathable material is insufficient. For example, the bag does not deform according to the shape of the clothing when installed in the gap of the clothing, and the adhesion to the clothing is improved. Decrease, leading to a decrease in insect repellent effect. Moreover, there is a possibility that the bag may burst due to an unintended load, and there is a risk of the contents popping out and contaminating the clothing.

Examples of the package using a breathable material include a non-woven bag, a cotton bag, a net case, and a perforated plastic container. Among these, a non-woven bag is easy to use. The material of the nonwoven fabric is not particularly limited, and examples thereof include polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polyamide, polylactic acid, rayon, and the like as polyester. Alternatively, a laminated product such as polyester or polypropylene / rayon laminated with paper or a blended product may be used. Among them, polyester, polyethylene, and polypropylene on which paper is laminated, which can partially adsorb the active ingredients and secondarily adjust the volatilization amount, are preferable.
The shape and configuration of the nonwoven fabric can also be determined as appropriate. For example, both surfaces may be composed of the breathable nonwoven fabric of the material, or one surface is a breathable nonwoven fabric of the material and the other surface has small holes. It may be a laminate of plastic films that may have many.

The breathable material used in the present invention preferably has a bending resistance measured by a 45 degree cantilever method of 50 to 100 mm, and more preferably 60 to 80 mm. The bending resistance measured by the 45-degree cantilever method means that a 2 x 15 cm test piece is placed on a horizontal platform with a 45 ° bevel at one end and the short side aligned with the baseline of the scale. After that, the test piece is slid toward the slope, and the length of the test piece extruded when one end of the test piece comes into contact with the slope is measured according to JIS L-1085.

If the bending resistance measured by the 45 degree cantilever method is less than 50 mm, the rigidity of the non-woven bag is reduced and the shape retention is insufficient, so that the filled particles are biased depending on the installed state. In particular, when a non-woven bag is placed upright, the filled grains are localized on the bottom surface, and a large space is created at the top of the bag. On the other hand, when the bending resistance measured by the 45-degree cantilever method exceeds 100 mm, the rigidity of the non-woven bag increases, so the flexibility of the non-woven bag is insufficient. The bag is not deformed according to the shape of the clothing, the adhesion to the clothing is reduced, and the insect repellent effect is reduced.

Insect repellents used for ordinary drawers are installed in the form of being placed between or directly above the clothes to be stored. However, in the insect repellent of the present invention, since the solid carrier has a specific volume and is encapsulated with a non-woven material having a specific bending resistance, the particles filled even in an upright state as described above are extremely There is no bias. From this, it is possible not only to arrange horizontally like a conventional insect repellent for drawers, but also to install in a state perpendicular to the gap between clothes. Furthermore, it is possible to suspend and use it in a Western dance or a closet, and it is also possible to use a plurality of connected ones depending on the size of the space to be used.

The volatile drug used in the present invention is not particularly limited as long as the active ingredient is volatilized at room temperature, and insect repellents, fragrances, deodorants, antifungal agents, antibacterial agents, and the like are used. be able to.

Here, when an insect repellent is used as a drug, p-menthane-3,8-diol has insect repellent activity because it has sufficient efficacy in a small amount, has no odor, and is highly safe for the human body. It is preferable to use various fragrance ingredients and pyrethroid insect repellents.
Examples of various perfume ingredients having insect repellent activity include terpineol, dihydromyrsenol, allyl octanoate, allyl hexanoate, allyl heptanoate, allyl cyclopropionate, allyl isoamyloxyacetate, allyl cyclohexyloxyacetate, and the like.
Examples of the pyrethroid insect repellent include compounds such as empentrin, transfluthrin, profluthrin, terrareslin, and metfurthrin as volatile insect repellents. These volatile pyrethroid insecticides have various optical isomers or geometric isomers, and any isomers can be used, and various additives must be used. You can also.

Air fresheners include citronella oil, orange oil, lemon oil, lime oil, yuzu oil, lavender oil, peppermint oil, eucalyptus oil, jasmine oil, coconut oil, green tea essential oil, limonene, α-pinene, linalool, geraniol, phenylethyl Examples include alcohol, amylcinnamic aldehyde, and benzyl acetate.

Deodorants include plant tea extracts such as green tea extract and persimmon extract, as well as hiba oil, cypress oil, bamboo extract, mugwort extract, drill oil, pyruvate such as ethyl pyruvate and phenylethyl pyruvate, etc. However, deodorizers made of porous materials such as activated carbon and zeolite, metal ions such as silver, copper, and zinc, or deodorizers having a titanium oxide photocatalyst, such as plates, granules, sheets, etc. You can also use the state.

Examples of the antifungal agent include 2-n-octyl-4-isothiazolin-3-one, isopropylmethylphenol, and orthophenylphenol.
Antibacterial agents include hinokitiol, tetrahydrolinalol, eugenol, citronellal, allyl isothiocyanate and the like.

Next, the insect repellent for clothing of the present invention will be described in more detail based on specific examples.

About 4 g of charcoal-blended cellulose beads having an average particle size of 3 mm (charcoal content: 50 mass%), p-menthane-3,8-diol as an insect repellent component, 200 mg, other components as a green tea extract, 5 mg, And 50 mg of propylene glycol, and the beads are housed in a bag (7.5 × 7.5 cm) made of a paper-laminated polyester nonwoven fabric (bending softness: 71 mm) that is breathable on both sides. An insect repellent was prepared. The apparent volume ratio of the cellulose beads holding the drug at this time was about 30%.
Two insect repellents were installed horizontally in the clothes gap in a drawer (about 50 liters) containing about 80% of the clothes. Over a period of about 6 months, iga, koiga, himekatsuobushimushi, Without being damaged by clothing pests, such as Hime Marukatsu Shimushi, it was also practical because it was given a deodorizing effect.

Put a wool blanket up to about 8 minutes in a costume case measuring 50 cm long x 40 cm wide x 25 cm high (about 50 liters) and lean the two insect repellents adjusted in Example 1 against the inside of the costume case. Installed and left at room temperature. This insect repellent was practical for about 3 months without being damaging to clothing pests.

(Test Example 1: Effect of apparent volume ratio of drug holder)
The insect repellent component in Example 1 was replaced with terpineol, and various insect repellents for clothing were prepared in accordance with Example 1 unless otherwise specified except for the bending resistance of the breathable material and the apparent volume ratio of the cellulose beads.
The following performance tests were conducted on each clothing insect repellent.
(Volatilization of insect repellent components)
A wool blanket was placed in a costume case measuring 50 cm long x 40 cm wide x 25 cm high (about 50 liters) until about 8 minutes, and an insect repellent for clothing was placed on top of the blanket and allowed to stand at room temperature. After 5 days, the insect repellent components remaining in the insect repellent for clothing were analyzed to determine the amount of volatilization per day. (The amount of volatilization thereafter is not shown as data, but the amount of volatilization per day was almost the same until the volatilization of the insect repellent component was completed.)
(Insect repellent effect test)
A wool blanket was placed in a costume case measuring 50 cm long × 40 cm wide × 25 cm high (about 50 liters) until about the eighth minute, and an insect repellent for clothing was placed on the top of the blanket. Similarly, a clothes case of the same size in which only a wool blanket was placed and no insect repellent was installed was designated as an untreated section.
Four net cages containing 10 moth larvae and a 5 cm × 5 cm wool cloth were placed in the costume case, and the degree of damage of the wool cloth was determined according to the following after one week.
−: No damage to the food +: Damage caused by shaving of the woolen fabric is observed but not penetrated ++: Damage to the food is found and there is a through hole +++: Excessive food damage is recognized, or multiple or There are large through holes (scent intensity test)
After measuring the volatilization amount of the insect repellent component (after 5 days), a sensory test was conducted with 10 monitors on the scent in the costume case. Evaluation was performed as follows, and the average value of the scores was shown as fragrance intensity.
1 point: There is no or almost no scent.
2 points: fragrance is weak.
3 points: The fragrance is just right.
4 points: Strong aroma.
5 points: The fragrance is too strong and uncomfortable.
If the calculated value is 4 or more, the fragrance is too strong and is not suitable for actual use.
(Mobility of drug holder in non-woven bag)
The mobility of the drug holder in the non-woven bag, which is a breathable material, was tested by the following method.
The flat surface of the insect repellent for clothing is placed on a flat table, and the thickness (A) of the bag is measured in advance with a caliper.
Next, while keeping the plane of the insect repellent for clothes perpendicular to the flat table, it is dropped from a height of 5 cm onto the flat table, and the thickness (B) of the bag after dropping is measured with a caliper.
The change in thickness (B / A value) after dropping was calculated. The indication of the state indicated by the numerical values is shown below.
B / A = 1 to 1.3: The nonwoven fabric bag is not deformed, and the drug holder hardly moves.
B / A = 1.3 to 1.8: The nonwoven fabric bag is appropriately deformed, and the drug holding body can also be appropriately moved.
B / A = 1.8-: The nonwoven fabric bag is greatly deformed, and the drug holder is localized on the bottom surface.
The results are shown in Table 1.

When the apparent volume ratio was as low as 14%, the effectiveness of the effective insect repellent was not exerted due to the lack of volatilization of the active ingredient, and it was damaged by moth larvae. In addition, when the apparent volume ratio is too high, such as 71% or 100%, the inner volume is too large, so that the nonwoven fabric bag is not deformed and the drug holder hardly moves, so that the usability is poor. Further, there is a problem that the scent is too strong, and there is a risk that the nonwoven fabric bag is torn and the contents are scattered when subjected to a sudden impact during production or actual use.
From this test result, the insect repellent with an apparent volume ratio in the range of 18 to 60% according to the present invention gives appropriate volatilization and mobility to the drug holder in the breathable nonwoven fabric bag, and as a result, it is effective. It was found that the insect repellent effect was exhibited.

(Test Example 2: Influence of bending resistance of breathable material)
As in Test Example 1, the insect repellent component in Example 1 was replaced with terpineol, and everything except the apparent softness of the breathable material and the apparent volume ratio of the cellulose beads held by the drug was the same as in Example 1. Various insect repellents for clothing were prepared. About each insect repellent for clothing, the performance test similar to Test Example 1 was implemented.
The results are shown in Table 2.

Since the non-woven fabric, which is a breathable material, has a bending resistance of 40 mm and 132 mm, the uniformity of the bead state is different with respect to the mobility of the drug holder compared to the bending resistance of 71 mm and 90 mm. The volatilization amount tended to drop slightly. From this, by using a rigid and soft breathable nonwoven fabric in the range of 50 to 100 mm, it is possible to provide an appropriate flexibility to the nonwoven fabric bag without reducing the volatilization amount, and to be an easy-to-use insect repellent for clothing. I understood it.

(Test Example 3: Effect of particle size of drug carrier)
About 4 g of charcoal-blended cellulose beads of various average particle sizes (charcoal content: 30% by mass) contain 200 mg of terpineol as an insect repellent component, 5 mg of green tea extract and 50 mg of propylene glycol as other components. The insect repellent for clothing of the present invention is accommodated in a bag (7.5 × 7.5 cm) made of a paper laminated polyester nonwoven fabric (bending softness: 71 mm) with an apparent volume ratio of about 30% and air permeability on both sides. An agent was prepared.
For each insect repellent for clothing, an insect repellent effect test and a test for confirming the mobility of the drug carrier were conducted in the same manner as in Test Examples 1 and 2.
The results are shown in Table 3.

In any of the particle sizes, the insect repellent effect was exhibited, but there was a difference in the mobility of the beads in the nonwoven fabric bag. When the diameter is 0.7 mm, the beads are light and fine, so that moderate mobility is not exhibited. Conversely, when the particle diameter is 10 mm, the movement itself is restricted and remarkable unevenness appears on the surface of the non-woven bag. It lacked the nature, and it did not look good in actual use.

From the above test, the place where the drug holder, in which the active ingredient is held in the solid carrier having a specific particle diameter, is packaged with a breathable nonwoven fabric having a specific bending resistance at a specific apparent volume ratio. Regardless, it was found to be an insect repellent for clothing showing a reasonably stable shape and sustained volatilization.

The present invention is widely applicable not only to insect repellents for clothing but also to aroma deodorants in addition to the field of repelling pests such as flying pests.

Claims (4)

An insect repellent for clothing in which a drug holder in which an active ingredient is held on a solid carrier is packaged with a breathable material, and the drug holder is packaged in the breathable material at an apparent volume ratio of 18 to 60%. An insect repellent for clothing. The insect repellent for clothing according to claim 1, wherein the breathable material is a non-woven fabric, and the bending resistance when measured by a 45-degree cantilever method is 50 to 100 mm. The insect repellent for clothing according to claim 1 or 2, wherein the material of the breathable material is a nonwoven fabric of polyester, polyethylene or polypropylene on which paper may be laminated. As the solid carrier, cellulose beads having an average particle diameter of 2 to 6 mm, an apparent specific gravity of 0.10 to 0.35, and charcoal may be blended, and p-menthane-3,8- The insect repellent for clothing according to any one of claims 1 to 3, wherein at least one of diol and terpineol is contained.