JP2005297987A - Standing pouch with spout for storing pyrethroid insecticide spray solution and spray device for spraying pyrethroid insecticide - Google Patents

Abstract

【Task】
Filling a spray solution containing a low concentration of pyrethroid insecticide does not reduce the drug concentration, or even if it drops, it can only be reduced to a slight level that does not interfere with practical use, and it has basic performance as a standing pouch. Develop a standing pouch with a foldable flexibility for storing a pyrethroid insecticide spray solution
It consists of a multilayer structure of an innermost layer, an intermediate layer, and an outermost layer, the innermost layer is a low-density polyethylene layer, the outermost layer is a polyethylene terephthalate layer, and an intermediate layer is an inorganic layered compound having an aspect ratio of 200 to 3000 and a high hydrogen bonding resin And containing at least one inorganic layered compound-containing resin layer having an inorganic layered compound / high hydrogen bonding resin = 5/95 to 50/50 (volume ratio) Providing a standing pouch with a spout for liquid storage.
[Selection figure] None

Description

The present invention relates to a standing pouch with a spout for storing a pyrethroid insecticide spray solution and a spray device for spraying a pyrethroid insecticide in which the standing pouch and a trigger type spray gun are connected by a communication pipe.

Agricultural chemicals such as insecticides used in home gardening are generally sold in the form of high-concentration emulsions (stock solutions) of about 20% to 60% by weight. It was used as a spray solution after diluting with water to achieve the prescribed drug concentration. However, as the number of people who enjoy gardening increases, the problem of adhesion of the undiluted solution to the hands, etc. at the time of dilution, and the annoyance of dilution work Since the amount of spray liquid used at one time is relatively small, there is a need for products in the form of spray liquid diluted with water to the drug concentration that can be easily used as spray liquid. It has been.

As such a product, a bottle-shaped resin container made of a resin such as polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, which has been diluted with water in advance to the above concentration and filled with a spray liquid that can be sprayed as it is, is already known, It is commercially available.

However, such a bottle-type container prevents the permeation of the spray liquid, and the resin layer constituting the container is as thick as about 0.5 to 1.5 mm in order to maintain the drug concentration in the spray liquid. In order to maintain the shape of the container as the bottom, it has a very high rigidity and a very bulky shape, so that there is a problem that it is difficult to dispose of the container after use.

For this reason, instead of the shape of the bottle-type container, it can be easily folded after use to change to a standing pouch that is not bulky and easy to dispose of. The shape material is required to have flexibility as a basic performance, and naturally the thickness is required to be thinner than that of the bottle-type container.

However, when the thickness of the sheet-like material is reduced, the drug in the spray liquid filled in the standing pouch permeates the container in a relatively short period of time together with the water, so the concentration of the drug in the spray liquid is significantly reduced. However, there is a problem that the desired effect cannot be obtained, and in particular, since such a spray liquid has a very thin concentration of 50 to 500 ppm, a decrease in the concentration of the drug due to permeation of the drug out of the container This problem was extremely significant, and this problem was particularly pronounced when the applied drug was a pyrethroid insecticide that is a general-purpose insecticide.

For this reason, the present inventors have made various studies to develop a standing pouch suitable for containing a spray liquid containing a pyrethroid insecticide as an essential active ingredient. When the well-known polyethylene terephthalate is used as a container material, if the thickness is thick like a bottle-type container, the problem due to the permeation of the drug outside the container does not occur so much, but it is too hard The standing pouch cannot be formed on the other hand, but on the other hand, if it is thin enough to have a suitable flexibility for constructing the standing pouch, for example, about 5 to 50 μm, the standing pouch can be formed but accommodated in the container. The concentration of the pyrethroid insecticide in the sprayed solution significantly decreases over time due to the permeation of the sprayed solution out of the container , A problem that practically not be used occurs, satisfactory results were not obtained.

The present invention has been made in view of such a situation, and even when a spray liquid containing a low concentration of pyrethroid insecticide is filled as a drug, does the drug concentration of the pyrethroid insecticide not decrease? To provide a standing pouch for storing a pyrethroid insecticide spray solution with foldable flexibility, which is a basic performance as a standing pouch, even if it is lowered. Objective.

The present invention is a standing pouch with a spout for containing a pyrethroid insecticide spray solution comprising a multilayer structure of an innermost layer, an intermediate layer and an outermost layer, wherein the innermost layer is a low density polyethylene layer and the outermost layer is a polyethylene terephthalate layer An inorganic layered compound containing an inorganic layered compound having an aspect ratio of 200 to 3000 and a high hydrogen bonding resin as an intermediate layer, and having an inorganic layered compound / high hydrogen bonding resin = 5/95 to 50/50 (volume ratio) It is intended to provide a standing pouch with a spout for storing a pyrethroid insecticide spray solution characterized by having at least one resin layer.

Further, the present invention is such that a standing pouch with a spout for storing a pyrethroid insecticide spray solution and a trigger type spray gun are connected by a communication pipe, and one end of the communication pipe is a liquid suction part of the trigger type spray gun. A spray device for spraying a pyrethroid insecticide, characterized in that the other end passes through a lid part detachable to the spout part of the standing pouch and is located at the bottom part of the standing pouch. It is.

The standing pouch with a spout for storing the pyrethroid insecticide spray solution of the present invention does not decrease the drug concentration even when filled with a spray solution diluted with water to such a low concentration that the pyrethroid insecticide can be sprayed on plants as it is. Or, even if it is lowered, it is only slightly lowered to the extent that it can be practically used, and it has the flexibility of folding like a general standing pouch, and as a pouch with a spout for storing a pyrethroid insecticide spray Very useful.

The standing pouch with a spout for storing a pyrethroid insecticide spray solution of the present invention is for storing a spray solution obtained by diluting a pyrethroid insecticide with water to a low concentration that can be sprayed on a plant as it is. The concentration of the pyrethroid insecticide in the spray liquid is usually in the range of about 50 to 400 ppm, preferably about 60 to 300 ppm as the concentration of the pyrethroid compound.

Examples of such pyrethroid insecticides include fenpropatoline, permethrin, sifluthrin, bifenthrin, etofenprox, and the like.

The drugs contained in the spray liquid are not only such pyrethroid insecticides, but also agricultural insecticides such as acephate, imidacloprid, cloanidin, dinotefuran, DBEDC, tetraconazole, hexaconazole, microbutanyl, triadimephone, depending on the purpose, Fungicides and any other agricultural chemicals commonly used in combination with pyrethroid insecticides may be mixed, and the concentration of these agricultural chemicals in the spray solution depends on the type of compound and the purpose of the application. For example, in the case of a disinfectant, it is usually in the range of about 30 to 200 ppm.

In addition, the spray liquid may appropriately contain an organic solvent, a surfactant, and the like that are usually used for adjusting a pyrethroid insecticide as the spray liquid.

The sheet material constituting the standing pouch with a spout of the present invention for storing such a pyrethroid insecticide spray solution (hereinafter sometimes simply referred to as a standing pouch) is the innermost of the standing pouch in contact with the spray solution. The inner layer, the outermost layer outside the tunding pouch, and an intermediate layer interposed between these two layers are formed.

Since such a standing pouch is usually formed into a bag shape by overlapping the ends of the material resin sheet and heat-sealing, the innermost layer of the standing pouch corresponding to this heat-sealing surface is excellent in heat sealing properties and flexible. It is composed of a low-density polyethylene layer having properties, more preferably a linear low-density polyethylene.

Even if it is too thin, the adhesive layer after heat sealing becomes thin and the adhesive strength is poor, and if it is too thick, the rigidity becomes high and the flexibility becomes poor, so it can be used as a standing pouch. Therefore, the thickness is preferably in the range of 50 to 250 μm, particularly 80 to 200 μm.

On the other hand, as the outermost layer, polyethylene terephthalate is preferably used from the viewpoint of functions such as appropriate flexibility and shape retention as a standing pouch.
When the polyethylene terephthalate layer is too thin, it is inferior in shape retaining property as a standing pouch, and when it is too thick, the rigidity becomes high and the flexibility becomes poor, and in order to maintain the function as a standing pouch, Is usually in the range of 5 to 50 μm, particularly 8 to 30 μm.

The standing pouch of the present invention is composed of a polyethylene terephthalate layer as the outermost layer. When the polyethylene terephthalate layer has a relatively thin thickness suitable for maintaining a function as a standing pouch, a pyrethroid insecticide is used. Is transmitted through the polyethylene terephthalate layer together with the spray liquid, and the concentration of the pyrethroid insecticide in the standing pouch is lowered. Therefore, in the standing pouch of the present invention, the innermost layer is used for the purpose of preventing the permeation of such spray liquid. As an intermediate layer between the outermost layer and the outermost layer, an inorganic layered compound having an aspect ratio of 200 to 3000 and a high hydrogen bonding resin are included, and the inorganic layered compound / high hydrogen bonding resin = 5/95 to 50/50 (volume ratio). It is necessary to have at least one inorganic layered compound-containing resin layer

In the inorganic layered compound-containing resin layer, the inorganic layered compound is an inorganic compound having a layered structure in which unit crystal layers are stacked on each other. Specifically, graphite, a phosphate-based derivative compound (phosphoric acid) Zirconium-type compounds and the like) and clay minerals. The particle diameter is preferably 5 μm or less, and more preferably 3 μm or less from the viewpoint of transparency.
Here, the particle size is the particle size (L) of the raw inorganic layered compound used to form the inorganic layered compound-containing resin layer, and is measured by a dynamic light scattering method at 25 ° C. in a medium such as water. This means the center diameter obtained from the photon correlation method.

In such an inorganic layered compound, in the present invention, the aspect ratio is preferably 200 or more from the viewpoint of preventing permeability of the spray liquid, and is preferably 3000 or less from the viewpoint of technical and economic efficiency.

Here, the aspect ratio (Z) is simply defined as Z = L / a.
[L is the particle size, and a is the unit thickness of the inorganic layered compound determined by measurement of the inorganic layered compound alone by powder X-ray diffraction or the like. ]

In such an inorganic layered compound, from the viewpoint of easily giving the aspect ratio as described above, an inorganic layered compound having a property of swelling and cleaving in a solvent is preferable. Clay minerals having are preferred.

Specific examples of such clay minerals include kaolinite, dickite, nacrite, halloysite, antigolite, chrysotile, montmorillonite, hectorite, tetrasillymic mica, talc, vermiculite, synthetic mica, xanthophyllite, Chlorite and the like.

Inorganic layered compounds are usually used after being swollen and cleaved in a solvent. Examples of such solvents include water, alcohols such as methanol, ethanol, propanol, isopropanol, ethylene glycol, and diethylene glycol, dimethylformamide, dimethyl sulfoxide, and acetone. Of these, water and alcohols are preferably used.

Examples of the high hydrogen bonding resin include polyvinyl alcohol, ethylene-vinyl alcohol copolymer having a vinyl alcohol fraction of 41 mol or more, hydroxymethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, amylose, amylopectin, pullulan, curdlan, chitin, chitosan. And polysaccharides such as cellulose, polyacrylic acid, sodium polyacrylate, polyethyleneimine, polyallylamine and the like. Polyvinyl alcohol, polysaccharides, especially polyvinyl alcohol are preferably used.

The polyvinyl alcohol is a polymer having a vinyl alcohol monomer unit as a main component, for example, a polymer obtained by hydrolysis or transesterification (saponification) of an acetate portion of a vinyl acetate polymer (ie, saponification). And a polymer obtained by saponifying a vinyl trifluoroacetate polymer, a vinyl formate polymer, a vinyl pivalate polymer, and the like.

The degree of “saponification” in polyvinyl alcohol is preferably 70% or more, more preferably 85% or more, and most preferably a so-called fully saponified product of 98% or more, in terms of mole percentage.
The degree of polymerization is more preferably from 100 to 5,000, particularly preferably from 200 to 3,000.

When using a high hydrogen bonding resin, a cross-linking agent for hydrogen bonding group, for example, zirconium compound titanium coupling agent such as zirconium oxychloride, zirconium sulfate, zirconium propionate, silane coupling, for the purpose of enhancing water resistance. Various coupling agents such as an agent, a melamine coupling agent, and an isocyanate coupling agent may be used.

In the inorganic layered compound-containing resin layer in the present invention, the composition ratio (volume ratio) between the inorganic layered compound and the high hydrogen bonding resin is in the range of inorganic layered compound / high hydrogen bonding resin = 5/95 to 50/50. If the volume ratio of the inorganic stratiform compound is less than this, it is inferior in preventing the permeability of the spray liquid.

The blending method of the inorganic layered compound and the high hydrogen bonding resin is not particularly limited. For example, a resin liquid in which the high hydrogen bonding resin is dissolved and a dispersion obtained by previously swelling and cleaving the inorganic layered compound in a solvent are mixed. Examples thereof include a method of removing the post-solvent, a method of adding a dispersion obtained by previously swelling and cleaving the inorganic stratiform compound in a solvent, and removing the solvent.

Such an inorganic layered compound-containing resin layer is known as a gas barrier resin layer described in, for example, JP-A-7-251871, JP-A-2002-2013367, JP-A-9-157406, and the like. In the standing pouch of the present invention, the gas barrier resin layer is used as a material for storing the spray liquid which is an aqueous solution completely unrelated to the gas barrier property, and the gas barrier resin layer is used in the spray liquid storage container containing the pyrethroid insecticide. It is not known to be used to prevent permeation of spray liquid.

The present invention has such an inorganic layered compound-containing resin layer as an intermediate layer. However, since the resin layer is not self-supporting as a single resin layer, the resin layer is usually provided on a film-like support. It is formed and used as a laminate.

As the support at this time, an appropriate resin such as polyethylene, polypropylene, ethylene-propylene copolymer, nylon, etc. is applied, but these supports themselves also become a constituent resin layer of the standing pouch and affect the function as a pouch. Therefore, in the standing pouch of the present invention, it is preferable to use a polyethylene terephthalate film which is the outermost layer as a support, and laminate an inorganic layered compound-containing resin layer thereon.

The method of laminating the inorganic layered compound-containing resin layer on the support is arbitrary, but the dispersion containing the inorganic layered compound and the high hydrogen bonding resin obtained by the above method is used as a coating solution, and this is used as the support. A coating method is generally used in which coating, drying, and heat treatment are performed on the surface.
As coating method, direct gravure method, reverse gravure method, micro gravure method, two roll beat coating method, bottom feed three roll coating method such as reverse coating method, doctor knife method, dip coating method or a combination of them is optional. The method is adopted.

The coating thickness varies depending on the type of substrate, the permeability of the target spraying liquid, and the like, and is not particularly limited. However, the dry thickness is generally 10 μm or less, and particularly preferably 1 μm or less.

Thus, the standing pouch of the present invention has an innermost layer of a low-density polyethylene layer and an outermost layer of a polyethylene terephthalate layer. As the other intermediate layer, nylon, polyethylene, etc. are appropriately used as long as the performance and function as a standing pouch are not impaired, and other printing layers and adhesive layers are used. You may intervene suitably.

The standing pouch of the present invention has a spout (injection port) whose lid can be attached and detached with a screw or the like, and a conventional bottom type except that the standing pouch of the present invention is used instead of the conventional bottom type container. As in the case where the container is used, the standing pouch of the present invention and the trigger type spray gun are connected by a communication pipe, one end of the communication pipe is connected to the liquid suction part of the trigger type spray gun, and the other end is the above-mentioned By disposing the lid part detachably attached to the spout part of the standing pouch so as to be positioned at the bottom part of the standing pouch, it can be effectively used as a spray device for spraying a pyrethroid insecticide.

The trigger type spray gun applied to such a pyrethroid insecticide spraying device is not particularly limited, and a conventionally known trigger type spray gun can be applied as it is.

Such a spray device for spraying a pyrethroid insecticide of the present invention can be used repeatedly by replacing and changing the standing pouch filled with the spray liquid, and the spray liquid filling container is more than the conventional bottom type container. Since it is lightweight, it is easy to handle, and since the standing pouch after use is foldable, it is not bulky and can be easily disposed of, so that it can be easily disposed of.
In addition, by adjusting the length of the communication pipe to the length of wear, it is possible to spray the standing pouch on the ground etc. without moving it one by one. The spraying work can be done easily and easily.

EXAMPLES Hereinafter, although an Example demonstrates this invention, it cannot be overemphasized that this invention is not what is limited to this.

Example 1
(Adjustment of spray liquid)
Organic solvent (Hysol SAS-296, Nippon Petrochemical Co., Ltd.) 0.3495g, Fenpropatoline TG (Pyrethroid insecticide, Sumitomo Chemical Co., Ltd.) 0.1815g and Tetraconazole TG (Fungicide, Arista Life Sciences Co., Ltd.) ) 0.069 g was mixed and dissolved to obtain an active ingredient premix, to which Solpol SM-100PW (surfactant, manufactured by Toho Chemical Co., Ltd.) 2.01 g, Solpol IT (surfactant, manufactured by Toho Chemical Co., Ltd.) 0 9.9 g and High Soluble MP (organic solvent, manufactured by Toho Chemical Co., Ltd.) 30 g were added and the mixture was heated and stirred at 40 ° C. to obtain 33.6 g of an intermediate solution.
To this intermediate liquid, 1466.4 g of ion-exchanged water was added little by little and mixed to obtain 1500 g of spray liquid.
Exactly the same operation was repeated, and 1500 g of spray liquid was obtained in the number necessary for the evaluation test.

(Formation of standing pouch)
Synthetic mica (tetrasilica mica NA-TS, manufactured by Topy Industries, Ltd., particle size: 977 nm, aspect ratio: 1043) was dispersed in ion-exchanged water so as to be 0.65% by weight, and a dispersion liquid (liquid A) was obtained. Polyvinyl alcohol (PVA117H, manufactured by Kuraray Co., Ltd., degree of saponification: 99.6%, degree of polymerization: 1700) was dissolved in ion-exchanged water so as to be 0.325% by weight to obtain a resin solution (liquid B). Obtained.
This A liquid and B liquid were mixed so that solid component ratio (volume ratio) might become inorganic layered compound / resin = 3/7, and this was made into the coating liquid.
This coating solution is coated on 12 μm thick biaxially stretched polyethylene terephthalate (OPET) and dried to obtain a laminated film, printed on the inorganic layered compound-containing resin layer side, and an adhesive on the printed layer A multi-layer sheet in which a 12 μm thick nylon (NY) layer was laminated via a layer and a 160 μm thick low density polyethylene (LLDPE) layer was further laminated thereon via an adhesive layer was obtained.
The multilayer sheet was laminated so that the LLDPE layer side was inside, and the ends were heat-sealed by a known method to produce a standing pouch with 2 L spout.
The spout with a screw was made of polyethylene terephthalate.

(Evaluation)
The obtained standing pouch was filled with 1500 g of the spray liquid obtained previously, the spray liquid was analyzed under the storage conditions shown in each table, and the concentration change of the spray liquid was examined. The results are shown in Tables 1 to 3.
The analysis was performed by gas chromatography using a calibration curve method according to the following method.

(Create a calibration curve)
About 110 mg of fenpropatoline of known purity is precisely weighed into a 50 ml flask and dissolved in acetone to a constant volume. Aliquot 5 ml of this solution into a 50 ml flask with a whole pipette and make up to a constant volume with acetone. The acetone solutions 3, 4, 5 and 6 ml are aliquoted into separate 100 ml eggplant type flasks using a whole pipette.
On the other hand, about 60 mg of tetraconazole of known purity is precisely weighed into a 50 ml flask and dissolved with acetone to obtain a constant volume. Aliquot 5 ml of this solution into a 50 ml flask with a whole pipette and make up to a constant volume with acetone. The acetone solutions 2, 3, 4 and 5 ml are accurately dispensed into a 100 ml eggplant type flask to which fenpropatoline is added using a whole pipette.
Acetone in the 100 ml eggplant type flask was removed using a rotary evaporator, and each internal standard solution (about 50 mg of benzyl n-butyl phthalate was precisely weighed into a 200 ml volumetric flask, dissolved by adding chloroform, Using a whole pipette, add exactly 2 ml (using a constant volume as an internal standard solution) and dissolve to obtain a calibration curve solution.
1 μl of each calibration curve solution is injected into the gas chromatograph under the operating conditions shown below, and a gas chromatogram is recorded.
Using an automatic accumulator, the peak area ratio of phenpropatoline and tetraconazole to benzyl n-butyl phthalate is determined, and a calibration curve is prepared with the weight ratio on the horizontal axis and the peak area on the vertical axis.

(Gas chromatograph operating conditions)
Column: 2% DEGS / chromosolve W (AW-DMCS) 60/80 mesh Column temperature: 190 ° C
Inlet temperature: 250 ° C
Carrier gas: Nitrogen, 30 ml / min Hydrogen gas pressure: 0.6 kg / cm ³
Air pressure: 0.6 kg / cm ³
Detector sensitivity: 10 ² × 4
Recording paper feed speed: 5 mm / min

(Analysis operation)
About 10 g of the spray solution is weighed into a 50 ml eggplant type flask, and the water in the flask is removed using a rotary evaporator. Add 3 ml of acetone to the residue, dissolve it, add silica gel for chromatography to a simple column packed in a Pasteur pipette to 2.5 cm, wash the eggplant flask with 10 ml of chloroform, and let it flow out as the eluent. The active agent is removed.
Thereafter, the chloroform in the eggplant-shaped flask is removed using a rotary evaporator, and 2 ml of the internal standard solution is added to dissolve the residue to obtain a sample solution.
Thereafter, the peak areas of fenpropatoline and tetraconazole with respect to benzyl n-butyl phthalate (internal standard substance) were obtained in the same manner as the preparation of the calibration curve, and phenpropatoline and tetraconazole were obtained using the calibration curve. Converted to weight, the content (% by weight) of fenpropatoline and tetraconazole in the sample is calculated according to the following formula.
Fenpropatrin content = Fenpropatrin weight (mg) / Sampling fee (mg)
Tetraconazole content = tetraconazole weight (mg) / sample collection fee (mg)

Comparative Example 1
The change in the concentration of the spray liquid filled in the standing pouch was examined in the same manner as in Example 1 except that a standing pouch made of only high-density polyethylene having a sheet thickness of 200 μm was used. The results are shown in Tables 1 to 3.

注：評価試験前の散布液中のフェンプロパトリン濃度の初期分析値は０.０１２３重量％であった。





Table 1

Note: The initial analysis value of the fenpropatoline concentration in the spray solution before the evaluation test was 0.0123 wt%.

注：評価試験前の散布液中のフェンプロパトリン濃度およびテトラコナゾールの初期分析値はそれぞれ０.０１３３重量％、０.００５３重量％であった。 Table 2

Note: The concentration of fenpropatoline in the spray solution before the evaluation test and the initial analysis value of tetraconazole were 0.0133 wt% and 0.0053 wt%, respectively.

注：評価試験前の散布液中のフェンプロパトリン濃度の初期分析値は０.０１３３重量％であった。 Table 3

Note: The initial analysis value of the fenpropatoline concentration in the spray solution before the evaluation test was 0.0133% by weight.

From the above evaluation results, in the standing pouch having the inorganic layered compound-containing resin layer of the present invention as an intermediate layer, the decrease in the concentration of fenpropatoline in the spray solution stopped in about 2 weeks regardless of the storage conditions, and the change thereafter was almost Although it is not seen, it becomes a stable state, but when stored in a standing pouch consisting only of high-density polyethylene, the concentration of fenpropatoline decreases over time, and after storage at 60 ° C for 1 month, it is about 4 minutes of the original concentration. It became 1.

Claims (8)

It is a standing pouch with a spout for storing a spray solution of a pyrethroid insecticide spray solution consisting of a multilayer structure of an innermost layer, an intermediate layer and an outermost layer, the innermost layer being a low density polyethylene layer, the outermost layer being a polyethylene terephthalate layer, An inorganic layered compound-containing resin layer containing an inorganic layered compound having an aspect ratio of 200 to 3000 and a high hydrogen bonding resin, and having an inorganic layer compound / high hydrogen bonding resin = 5/95 to 50/50 (volume ratio) A standing pouch with a spout for storing a spray solution of a pyrethroid insecticide, characterized by comprising one layer. The standing pouch with a spout for storing a pyrethroid insecticide spray solution according to claim 1, wherein the inorganic layered compound is an inorganic layered compound swollen and cleaved by a solvent. The standing pouch with a spout for storing a pyrethroid insecticide spray solution according to claim 1, wherein the high hydrogen bonding resin is polyvinyl alcohol. The standing pouch with a spout for storing a pyrethroid insecticide spray solution according to claim 1, wherein the low density polyethylene is a linear low density polyethylene. The standing pouch with a spout for storing a pyrethroid insecticide spray solution according to claim 1, wherein the polyethylene terephthalate layer has a thickness of 5 to 50 µm. The standing pouch with a spout for storing a pyrethroid insecticide spray solution according to claim 1, wherein the thickness of the low density polyethylene layer is in the range of 50 to 250 µm and the thickness of the polyethylene terephthalate layer is in the range of 5 to 50 µm. The standing pouch with a spout for storing a pyrethroid insecticide spray according to claim 1, wherein the concentration of the pyrethroid insecticide in the spray is in the range of 50 to 400 ppm. A standing pouch with a spout for storing a pyrethroid insecticide spray solution according to claim 1 and a trigger type spray gun are connected by a communication pipe, and one end of the communication pipe is connected to a liquid suction part of the trigger type spray gun, 4. A spray device for spraying a pyrethroid insecticide, characterized in that the other end passes through a lid part detachable from the spout part of the standing pouch and is located at the bottom part of the standing pouch.