JPS59216803A - Manufacture of fumigation tube for repelling vermin - Google Patents

Abstract

PURPOSE:To manufacture the titled fumigation tube capable of repelling vermins safely and easily, by providing a pair of flat hot-melt plate with protrusions, sealing a normally liquid repellent for vermin in the protrusion, placing the plates at the center of a tube, and disposing powdery combustible substance around the plate. CONSTITUTION:The protrusions 2 for sealing a repellent which is liquid at normal temperature (e.g. 2,2-dichlorovinyl phosphate) are attached to a pair of flat hot-melt plates 1 (e.g. made of nylon) at the center of both plates. The plates are put into a bottom-closed hot-melt twice-folded bag 3 having a folded width of 1.2-1.5 times the width of the flat plate 1, and a powdery combustible composition 6 is filled in the bag from its top opening. The protrusions 2 containing the repellent are automatically placed at the center of the bag by this process to obtain the titled fumigation tube. EFFECT:It is a time-saving and low-cost fumigant. Since the contact of the repellent to the body can be avoided, it can be safely handled.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a pest-killing smoking gun that can be turned into smoke by heating.

Smoking cylinders for the purpose of exterminating pests and diseases are extremely effective in controlling sanitary pests, agricultural and horticultural crop pests, and disease-causing bacteria that live in closed or semi-closed spaces such as indoors or forests, and are easy to exterminate. It is widely used not only because it saves time and effort, but also because it is safe and does not come into contact with the human body.

In general, fumigants for pest-controlling substances use a method of vaporizing the pest-controlling substance using heat generated by a combustion reaction using an oxidizing agent or other exothermic reactions, and then releasing it into the atmosphere and turning it into atomized smoke. However, it has a practical defect in that the repellent substance is inactivated by the thermal decomposition reaction that occurs when the repellent substance is vaporized. As a solution to this problem, the present applicant proposed a pest exterminating smoke cylinder described in Japanese Utility Model Publication No. 35279/1983. The outline of the structure of this device is as follows: ``A smoke agent composition consisting of ammonium perchlorate or a heating smoke agent mainly containing ammonium perchlorate, and a pest control substance that becomes atomized by heating is heated to soften and melt a non-metallic smoke agent. A container made of a combination of one or more materials belonging to the group of sexual coatings and the group of Western paper and Japanese paper is filled and sealed. 21. This known pest-controlling smoke tube allows the gas generated during smoking to pass through the shortest distance without passing through the combustion residue layer and to be immediately released into the atmosphere. It has the advantage of being able to suppress the thermal decomposition-based inactivation of pesticidal substances1, and can be provided at low cost. 51 When using a repellent substance, it is necessary to use a satisfactory smoking agent because not only the repellent substance but also the exothermic composition deteriorates due to aging reactions in a short period of time, and the exothermic composition becomes wet and its combustibility is significantly reduced. can't get it. Herein, the present inventors have devised a chemically unstable and liquid pest-killing substance at room temperature (10C to 50C) that can be obtained at low cost by an easy-to-implement method without impairing its effectiveness. As a result of various studies regarding ruka and ruka, we have developed the following method for manufacturing a pest-controlling smoke cylinder.

When developing this invention, the following three items were selected as items to be provided.

(a) The liquid (including jelly-like) pesticidal substance is completely separated from the combustible composition.

(5) A liquid repellent substance or combustible composition is placed at the center of the liquid to prevent uneven combustion or extinction.

(c) To prevent the smoke of isolated stones, saliva, and repellent substances from passing through the high-temperature combustion residue (!:0 In order to satisfy the above item y), this invention Configured.

A convex part sealed with a pest-controlling substance that is liquid at room temperature is provided in the center part of both sides of a heat-fusible flat plate having a pair of parallel sides,
The first part is inserted into a thermofusible half-folded bag having a half-folded width 1.2 to 15 times the width of the flat plate and whose bottom is sealed, and the opening at the two ends of the bag is inserted. By filling the bag with a more powdery combustible composition, the flat protrusion was automatically positioned at the center of the bag.

With the Kokichi configured as described above, the liquid repellent substance is sealed in the convex portions at the center of both sides of the heat-fusible flat plate.21. 9. Completely isolated from combustible compositions to prevent Ru. Therefore, even if a chemically unstable liquid pesticide is used, no chemical deterioration occurs over time. (3) Positioning the convex part sealed with the repellent substance in the center of the bag means that when the convex part melts due to the heat generated by the combustible composition and the repellent substance flows out, It is necessary to prevent phenomena such as uneven combustion or extinction, but in reality
However, it is not easy to locate the convex portion in the center of the bag body, and the inventors of the present invention paid particular attention to this point and conducted intensive studies to find a method that is easy to implement.As a result, the present invention was developed. The manufacturing method described in 2010 has made it possible to produce Kokichi accurately and easily. In addition, as the combustible composition burns, the heat-melting bag enclosing the combustible composition gradually melts and falls off, so the smoke of the repellent substance that is generated covers the part of the bag that has fallen off. Since it is immediately released into the atmosphere, it does not pass through high-temperature combustion residue.
Therefore, deterioration of the repellent substance due to thermal alteration can be significantly suppressed.

A Kokichi that satisfies the requirements of this invention can be made.

The thermofusible flat plate described in this invention is one that easily melts due to the heat generated by the combustible composition.
．． However, synthetic resins with a melting point of 100C to 400tT are generally used for practical purposes.
．． It is desirable to use within the range of 0.02 to 0.5 mm.

Also, the heat-melting bag is made of a material that melts with the combustion heat of the combustion composition! 1. Ruga, generally Jikko 46-3527
The softening point or melting point stated in Publication No. 9 is 50C~
One type for each group belongs to the group of non-metallic coatings such as synthetic resins that are easily softened and melted by heating at 200 C, and the group of Western and Japanese papers that are easily burnt out by heating at a thickness of 001 to 01 nm. A bag made by combining the above is used practically.

Hereinafter, the manufacturing method of the present invention will be explained with reference to the attached drawings.

FIG. 1 is a partially cut-away explanatory diagram showing the method of manufacturing a smoker cylinder of the present invention, and figures A to 2 of FIG. 2 are explanatory diagrams showing the manufacturing process. A convex portion 2 sealed with a liquid pest control substance is provided at the center of both sides of the flat plate l.
Thus, a sealed container for the pest-controlling substance represented by the symbol A2 is constructed.9. Ru. This container A has a width of 12 to 1
It is inserted into a thermofusible flat folded bag 3 which has a half-fold width of 5 times and has a sealed bottom and is placed on a vibration filling mounting table 4-1. − Substituted in! '1 Condition 0) By vibrating the loading stage while supplying the powdered combustible composition 6 from the supply device 5, the container A inserted into the bag is automatically positioned at the center of the bag. It has a built-in stone.

As shown in Figure 2A, inside the half-folded bag 3, I-
] By inserting the container A sealed with the liquid pest control substance shown in the figure and supplying the powdered combustible composition from the opening at the end of the bag, the container A can be made into the form shown in Figure C. As shown in the figure, a smoking tube is created with container A automatically positioned in the center.

The width of the flat plate 1θ) constituting the container A is an important part that determines where in the combustible composition the convex portion 2 containing the liquid pest control substance is positioned within the bag, and the width was determined by the experiments conducted by the present inventors. According to the results, it was confirmed that by making the half-folded width of the bag 12 to 15 times the width of the flat plate of the container, the convex portion 2 was automatically located at the center of the combustible composition.

This plays an important role in implementing this invention.

In the above explanation, an example is shown in which three convex portions are sealed with a liquid pest control substance, but there is no limitation to this in any way, and it is preferable to provide from - to several convex portions. are provided at intervals of . The number of sealing convex portions of the exterminating substance is appropriately determined in consideration of the pest exterminating effect of the smoke cylinder.

Further, the amount of the liquid exterminating substance sealed in the convex portion 31 is determined according to the selection of the number of the convex portions, etc.

Furthermore, the amount of filling of the combustion composition is determined in relation to the amount of sealed repellent substance.

In the present invention, the manufacturing method of the present invention can be applied not only to pesticides that are liquid at room temperature (10C to 50C), but also to pesticides that are chemically unstable to combustible compositions.

Fig. 3 is a partially cutaway perspective view showing an example of a smoking cylinder made by the manufacturing method of the present invention (7), and Fig. 4 is a view taken along the line x-x' in Fig. 3. The liquid pest control substance sealed container A is located at the center 211 of the powdery combustible composition 6 filled in the heat-melting bag 3, and the bag is opened [11 parts are welded]. 7sa7'7. The smoking cylinder is made of stone. The illustration shows an example in which synthetic resin film lx 31) is attached to both the front and back sides of Japanese paper 3a as a bag body.

When using the smoking tube made according to this invention, when the combustible composition is ignited and burned, the heat of combustion melts the container in which the liquid substance with a repellent property is sealed in the convex part, causing the repellent substance to melt. Substances are leached into the combustible composition. In this case, if the amount of repellent substance enclosed in the convex part is small, even one convex part will not affect the combustibility, but if the amount is large, there will be only one convex part. The entire amount leaches out from some locations, significantly moistening a portion of the combustible composition and significantly reducing its combustibility. In addition, if a repellent substance is placed close to the inner surface of a container or bag whose convex part is sealed, there will be almost no combustible substance between the container and the bag.
(8) The formation of smoke from exterminating substances is significantly inhibited by stone. As a result, serious deterioration in combustibility such as extinguishing and suffocation will occur. (!: The roller has an appropriate number of repellent substance sealing protrusions, and the above-mentioned sealed container is located in the center of the bag,
The repellent substance is uniformly leached into the combustible composition, and phenomena such as combustion, snuffing, and suffocation are observed, making it extremely effective in practice. Furthermore, as the combustion surface moves, the bag body is gradually burned away, so that the smoke of the repellent substance is released into the atmosphere without passing through the combustion residue layer. As a result, thermal decomposition is suppressed, the extermination effect is improved, and the generation of thermal decomposition products is reduced, resulting in the effect of significantly reducing the risk of chemical damage by 2 tons.

Next, examples of the present invention will be given to clarify the effects.

Example 1 A piece of nylon (registered trademark) laminated paper with a thickness of 0.1 mm, a length of 90 mm, and a width of 30 mm was placed in the center.
Two protrusions with a width of 24 mm and a height of 4 mm are provided.
2, 2-, which are liquid pest control substances at 71°, respectively.
Dichlorvinyl phosphate (DDVP) 3.5
! The contents were filled and sealed to form a DDVP sealed container. This was inserted into a laminate bag made of low-density polyethylene-glassine paper with a thickness of 01 mm and a half-fold width of 39.5 mm, and a powder combustion composition of 30 parts ammonium perchlorate, 30 parts sugar, and 40 parts Turku was added to the bag. 3 according to the method shown in Figure 1.
When the container was vibrated and filled for a minute, the sealed container was definitely located at the center of the bag. When the upper opening of the bag was heat-sealed and the resulting smoke tubes (2 pieces) were used to emit smoke in the center of a greenhouse where cucumbers were grown at 300 mB, the insecticidal effect against adult larvae of the red-spotted spider mite was 94%. there were. In addition, no drug damage to Gyukuri was observed.

Example 2 After leaving a smoking cylinder made in the same manner as in Example 1 in the atmosphere for one year, the change in DDVP over time was measured by gas chromatograph method, and the decomposition rate of DDVP was 1.1. There were no practical problems.

Incidentally, when DDVP and the combustion composition shown in Example 1 were mixed and filled in the bag 1 of Example 1, the decomposition rate of DDVP was 48% after being left at room temperature for 6 months.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway explanatory diagram showing the manufacturing method of the present invention, and FIG.
Figures A to 2 are explanatory diagrams showing the manufacturing process, Figure 3 is a partially cutaway perspective view of a smoking tube made by the manufacturing method of the present invention, and Figure 4 is x - x of Figure 3. It is a view taken along the line '. Explanation of symbols 1: Pair of thermofusible flat plates, 2: Repellent substance sealing convex portion, 3: thermofusible bag, 4: Vibration filling stand, 5:
- Supply device, 6... combustible composition. Figure 4-17-

Claims (1)

[Claims] A convex portion sealed with a pest-controlling substance that is liquid at room temperature is provided at the center of both sides of a heat-melting flat plate having a pair of parallel sides. is inserted into a thermofusible half-folded bag with a half-folded width 1.2 to 1.5 times the width of the flat plate and sealed at the bottom, and the powder is extracted from the opening at the top of the bag. 1. A method for producing a pest-controlling smoke cylinder, characterized in that the flat convex portion is automatically positioned at the center of the bag by filling it with a combustible composition.