JPS5967201A - Fumigating string and its making - Google Patents

Abstract

PURPOSE:A fumigating string that is made by covering a cellulosic core string integrally with a mixture of agricultural chemicals and buring agents thus permitting the product to be set at any places in any forms and showing good duration of burning, especially being suitable for use in green houses. CONSTITUTION:100pts.wt. of cellulosic core string of spun yarn and/or woven fabrics are impregnated with 20-100pts.wt. of burning agent such as potassium nitrate, barium nitrate or nitrocellulose and the resultant string is integrally formed along with a mixture layer containing agricultural chemicals, burning agents such as nitrates or perchlorates and, when needed, binders. When the fumigating string is used in a green house, its one end is extended to the safety place inside or outside the house and fired. Thus, the string burns from the top through the tail to distribute the agricultural chemicals every nook and corner, moreover, the applier can safely handle it without coming into direct contact with the chemicals and being suffocated by the smoke.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a layer of a mixture containing an agrochemical, a combustion agent, or a pesticide, a combustion agent, and a binder around the outer circumference of a cellulose core string or a cellulose core string containing at least one type of combustion agent. The present invention relates to a smoke wire characterized in that it is integrally molded with a mixture layer, and a method for manufacturing the same.

Fumigants are pesticides that have insecticidal and sterilizing effects (hereinafter simply referred to as pesticides), and combustible agents 1fC consists of pesticides, combustible agents, and additives, and the pesticides are volatilized into the ash surrounding air by burning the combustible agents. It is used to control substances that inhibit the growth of agricultural crops.

In particular, greenhouse gardening has become popular in recent years, and greenhouse gardening has become noticeably larger. In the Haunu 1 Rui 1 Art, agricultural products ゛・
Due to poor ventilation in the greenhouse, the spraying of pesticides on the greenhouse creates an environment in which users are likely to be exposed to Kari, and due to safety concerns for the human body, there is concern that users may come into direct contact with the JK drug or be exposed to smoke. In addition, various attempts have been made to develop a black smoke agent that can effectively spray an economical amount of pesticides on horticultural crops, but no final decision has been made yet. As shown in Figure 1, smoke molded products are made by covering a powdered, granular, or granular smoke composition with a heat-shrinkable plastic film to form a cord, and then attaching a metal wire to the inside or the outer periphery of the cord. be. This molded smoke product is made by covering the smoke composition with a heat-shrinkable film, so it is in the form of a string.It can be installed at any location in the house, and one end of it can be connected to the inside of the house 1, 9+, Since it can be pulled out and ignited at one point, safety for several tens of hours is ensured.However, since it is filled with powdered or granular smoke, it may cause uneven filling density during filling and molding. No.1 for uneven distribution of agricultural chemicals and combustion agents?・
There are disadvantages in that the smoke tends to disappear easily and the smoke effect within the greenhouse is not sufficiently ensured.

Furthermore, as illustrated in Japanese Patent Application Laid-Open No. 50-70530, a base material such as an agricultural chemical or a heating agent is filled into a container, and the base material is lit once in the evening with a lantern from inside. It has become a VC. In Y-no-gamma, a wick is used to sustain the ignition and combustion of the base material, and the wick is made of silk containing a combustion agent such as potassium nitrate or nitrocellulose.

However, this notification only includes the combustion agent, and because the agricultural and combustion agents are not integrally formed and are housed in a container, it cannot be installed continuously in a string at any arbitrary location within the greenhouse. Another drawback is that it is not possible to ignite it in any sanitary and safe place.

This book), ', su)] shi1, ko'i1 and other problems were punished and resolved.

That is, in the present invention, the outer periphery of the cellulose core string or at least the cellulose core string containing a combustion agent is coated with a mixture containing agricultural chemicals and a burning agent of 4#, +J<+-A or 1 (3pepi, combustion A smoke wire integrally formed from a mixture Xi containing an agent and a binder, and a method for manufacturing the same.

Kibatsu 1:! The smoke line of "j" is + IIl construction as above and 4
＝ Therefore, when one end of the string is lit, it will not go out and will be transmitted through the flames) and the flame will be heated and the L side will be heated and dispersed. Another feature d is that you can install smoke lines anywhere in the house.
Place one end of it in any safe place such as the entrance of the house, etc.
Since it can be ignited with a single mouth, there is no need for the user to touch the M-layer or be exposed to smoke, providing a very safe smoking line. It is something to do.

The cellulose core string used in the present invention may be a twisted yarn of cellulose fibers or a string-like material of woven fabric.
Typical examples include thread-like or string-like materials such as cotton, human silk, hemp, and ramie, paper-like materials, and straw-like materials.

These cellulose core strings have a strong ability to hold their shape by themselves and are resistant to cod seizing.

The core string impregnated with at least one combustion agent used in the present invention is one in which at least one of the combustion agents described later is coated with a gold wire on the core string, the content of which is equal to or greater than that of the core string. string 10
Preferably 120 parts of IO to 0 parts, especially 20 to 0 parts
100 parts is preferred. Nitrous j&? as a combustion agent? potassium,
Using either barium nitrate and nitrocellulose or a mixture of the two or more, the smoke ray burns sustainably and the pesticide volatilizes very well.

The agricultural chemicals used in the present invention are not particularly limited, but representative ones include MEP, diazinon, M
TMC, BPMiC, Kelsen, Procymidone, Florfuedin Chloric acid, Cartap, Merimyl, Inthioate, Ethylthiometone, Oxin QL IVI A F
, diop, ferrite, IBP, IDDP, captafor, phenazine oxide, polyoxin, DCIP and O' D B CP, and mixtures of two or more thereof.

The fuel used in the present invention! Lg+j agent is potassium nitrate,
Nitric acid such as sodium nitrate, barium nitrate, nitric acid (Class 4, 1), ammonium perchloride, etc. A mixture of more than one species can be mentioned.

The binder used in the present invention is Okina solvent solution 7Tj,
l, water/shochu jHIt 2:'! and aqueous dispersion criminal 1 (
emulsion), and both can be used. Seventy-year-old clothes include cloth solvent-soluble binder G; 1, cellulose derivatives such as nitrocellulose, cellulose acetate, cellulose acetate butyrate, and ethyl cellulose, natural 4ir1' fats used as film-forming agents in the paint field, and synthetic Examples include solutions of resins in nucleated solvents.

Typical water-soluble binders include cellulose derivatives such as carboxymethyl cellulose, methyl cellulose, and hydroxyethyl cellulose, water-soluble polymers such as glue, casein, sodium alginate, pectin, gum arabic, and starch, sodium polyacrylate, and polyvinyl alcohol. An aqueous solution of 7M molecules can be mentioned.

Particularly good binders are solutions of nitrocellulose in nucleated solvents, water-soluble cellulose derivatives, and water bath solutions of polyvinyl alcohol. When these binders are used for 'i and f, the adhesion between the cellulose and the mixture layer is good, resulting in defects such as peeling - still burning continues.

Since the integrally molded smoke wire produced by the present invention (a) is uniformly and strongly contaminated with pesticides, combustion agents, etc., the wire is filled with conventional powder or granular smoke material in the form of (a)1. There are no drawbacks such as uneven packing density or uneven distribution of pesticides and combustion agents that occur in smoked products.

In addition, additives such as diatomaceous earth, Tal 7, wood flour, and melamine, and plasticizers for nitrocellulose such as phthalate esters and oils and fats are also used in the present invention.

Although these are not necessarily essential requirements, the addition of these additives can adjust the combustion temperature and speed, and is effective as a uniform dispersion medium for pesticides and concentration adjustment, and the addition of plasticizers can improve the nitrocellulose coating. This has the effect of imparting flexibility, and both further enhance the usefulness of the present invention. Typical methods for integrally molding the cellulose core string and the mixture layer include using a disintegrating solvent alone that dissolves nitrocellulose, or a combination of an organic solvent that dissolves nitrocellulose and an organic solvent that does not dissolve nitrocellulose. Nitrocellulose was added to one of the mixed solvents to form an organic solvent solution of nitrocellulose (hereinafter simply referred to as N CWi solution), and a pesticide or a combustion agent other than the pesticide and NC was added to this NC solution and dispersed by stirring. A mixed solution is prepared, a cellulose core string is immersed in this mixed solution, passed through it, ironed to remove excess mixed solution, and then dried to remove the organic solvent to form a smoke line.

Another method is to immerse a cellulose core string in an aqueous solution of potassium nitrate, take it out, and dry it to produce a potassium nitrate-containing cellulose core string. This core string is immersed in and passed through a mixed solution of a separately prepared NC solution containing a pesticide or a combustion agent other than the pesticide and N/C, and is coated once or twice to remove excess mixed solution. , dry to remove the organic solvent and use it as a smoke wire.

Another method is to first add nidrose (NC) to the NC solution.
) Add a combustion agent other than ) to make a dispersed mixture, pass the cellulose core string through this mixture while immersing it, iron it, remove excess mixture, dry it, and remove the organic solvent. A cellulose core string containing a burning agent is made. This core string is dipped and passed through a mixed solution prepared by adding pesticides, combustion agents, etc. to a separately prepared aqueous binder solution, and then rubbed with iron to remove excess mixed solution. Exclude the smoke line.

Yet another method is to first add a combustion agent other than NC to the NC solution, create a dispersed mixture, pass the cellulose core string through this mixture while immersing it, and apply it with iron to remove the excess mixture. After removing.

It is dried to remove the organic solvent and produce a cellulose core string containing a combustion agent. Add this core string to a separately prepared NC solution and add NC.
It is passed through while being immersed in a mixed solution in which other combustion agents, etc. are added and dispersed, and after ironing and painting to remove excess mixed solution, it is dried to form a nucleated solvent solution smoke line. Although the manufacturing method of smoke wire has been described as a typical example, the method is not limited to these methods, and various known coating methods such as ironing coating and dipping coating can be used.

Since the smoke wire obtained by the present invention uses a cellulose core string as a base, it is string-like and can be installed in any desired location and shape. Because it uses a cellulose core string containing 20% carbon, the combustion is long-lasting after one ignition and no problems such as burning out occur. Another feature is that one end of the smoke wire is placed at a safe location inside and outside the greenhouse, and when one end is lit, it burns continuously over the entire length along the wick, allowing pesticides to reach every corner of the greenhouse. It is a smoke wire that has many of these characteristics and can be handled very safely from a sanitary standpoint, since there is no need to worry about the user coming into direct contact with pesticides or being exposed to smoke.

The present invention will be further explained using examples. Actual h (in one example, parts and h are shown as suboxylic acid proportions.

Example 1 Methyl ethyl ketone 3002 was added to H/4 nitrocellulose 143f containing 30 units of isopropyl alcohol and dissolved under stirring to form a nitrocellulose solution (hereinafter simply referred to as NC).
(referred to as a solution) and add 100% potassium nitrate to this NC solution.
f, silica ±507, melamine 33f1, diazinon 501 gold were added and stirred well to prepare a mixed solution. A stone set with a diameter of 5% was immersed in this mixed solution and pulled out through a rubber die hole with a diameter of 5.1%, and then dried. This string was again passed through the lower part of the rod 71 placed in the mixed solution and pulled out through the hole of a 5.1% φ rubber die, and then dried to form a smoke wire. The Iwagumi used is 7.
It was 17 nt, and Iku-no-tri was made into a smoke line.
If rj: It was 15t7m. Using 2m of this black smoke gland, I ignited it from one end and burned it, and it continued to smoke without producing any flame.It took about 8 minutes to finish burning.

Example: Dissolve 100v of potassium nitrate in 300f of warm water at 50°C.
L, immerse 5 m of stonework with a diameter of 5% in this and take it out, 6
It was dried in a dryer at 0°C for 5 hours. The number of Iwagumi used in 1 history is 81.
/m and weight of core string i4+potassium impregnation V
iK was 92/m. This core cord was made into a smoked powder by the following method. .

Add 300 g of methyl alcohol to 143 v of F11/2 nitrocellulose containing 30 g of isopropyl alcohol, stir, and dissolve to obtain an NC solution.To this NC solution/IK, procymidone 100 f%, 10 tons of castor oil, and 507 g of diatomaceous earth. Add 20 t of melamine and 301 t of potassium nitrate and stir to make a mixed solution. Place the rod into this mixed solution.
Then, the core string was passed through the lower part of the rod and pulled out from the die hole of 5.1%φ, and then dried to produce smoked sand.

Its weight was 1797m. This °, Hikimori 1 Mourning 2
Using a tn, I ignited it on one end and let it burn, then I turned the lift to the left and it smoked 5'f5 without producing any flame. It took 10 minutes for the combustion to end.

Example 3 Isopropyl alcohol r57ao@Kataru III/
.

Methyl alcohol 300 was added to nitrocellulose 1437 and dissolved in bt to yI·t to obtain an NC solution, and nitric potassium 30S' was added to this NC solution and stirred well to prepare a mixed solution. While immersing 3 m of straw string with a diameter of 4.5% in this 11-b mixture, it was pulled out from a die hole with a diameter of 4.6%, and then dried. The straw string used was 3m long and 1O
However, the core string containing a combustion agent weighed 15 tons.

This core string was made into a smoke wire using the following method.

Add 400 f of water to 20 r of methylcellulose and dissolve in a stirring bath to obtain an aqueous solution. To this aqueous solution, dry nitrocellulose r-i //1ioot, diatomaceous earth ioo r, potassium nitrate 202. Diazinon 40fi was added and stirred id to prepare a mixed solution. Place the rod in this mixed solution,
The core string was passed through the lower part of the rod and pulled out through a die hole with a diameter of 4.6%, and then dried to form a smoke wire. Using 2m of this smoker, I lit it at one end and let it burn, and it continued to smoke without emitting any flame. It took nine minutes for the combustion to stop.

Example 4 Methyl ethyl ketone 3001 to H1//l nitrocellulose 1431 containing 30 units of isopropyl alcohol
Add and stir to dissolve to make an NC solution.1. In this NCW4 solution, procymidone 12Of, phthal llI tadiptyl 107
, diatomaceous earth 601, melamine 601. potassium nitrate 12
Of was added and stirred to prepare a mixed solution. A straw string with a diameter of 4.5'X was immersed in this mixed solution, pulled out through a die hole with a diameter of 4.5X, and dried under Hg to obtain a smoke wire. Using 2 m of this smoke wire, it was ignited from one end and burned, producing sustained smoke without emitting any flame. It took eight minutes for the first round to end.

14- Example 5 ml of methylcellulose was dissolved in 3007 ml of water, and then 100 ml of nitric acid and 100 ml of potassium were added, humidified, stirred and dissolved, and a 5% straw string was completely immersed in the solution. It was then taken out and dried in a dry oven at 60'C for 5 hours. Although the strawing rate used was 5 r/m, the weight of the core string after dipping was f) 97 m. The steps after the impregnated core string are the same as in Example 2. 1, 1□:! '4k, ).

The weight of this j, the smoke gland, was 1497 m. This 1.
Using μij 2nl, ignite it from −(1,”^) and let it burn, and it will continue to emit smoke without producing a flame.
Burning [,ta.

Ratio softness 1 (11 ■ Isopropyl alcohol Y (containing 30% ■ I//4
Nitrocellulose 1439 K Methyl Ethyl Ketone 40
0' ”k Kani 4ij:'M'?＜+ )'I
'l' L TeNC solution, add 100 f of potassium nitric acid, diatomaceous earth 502°, melamine 332, and diazinon 50 tsk to this NC7δ19y.

Continued heating, flooding, and stirring in a water bath to remove the solvent and obtain a mixture in the form of small clumps. This mixture was pulverized to obtain a 16-mesh 1a product, which was further dried in a dryer at 80° C. for 2 hours to obtain a dry powder product of the mixture.

A dry powder product of this mixture was made into a string by the following method.

Heart, using the flame ray manufacturing machine (Imperial fire mulberry ■! Ri, medicine f3
While feeding f/mf quantitatively, it was wrapped around two paper tapes (23% width x 0.1% thickness), and wrapped around the outside with four hemp threads (1 (1)) and four Reikotsu threads (20#). A smoke wire with a diameter of 4% was obtained.Using 2 m2 of this smoke wire, I lit it from one end and let it burn out.It started burning with smoke without producing any flames, but it went out after burning for 35 meters. , combustion i
i l11M &fζ and fc. This disappeared
Looking at the small smoke group, there was a problem with the filling of smoke medicine, and the amount of smoke medicine was low.

EXAMPLES Using the methods of Examples 1 to 5 and Comparative Example 1, 50 smoke wires each having a length of 2 m were made, each of which was ignited from one end, and the combustion extinction after one ignition was tested. The results are shown in the table below.

Margins below The above trace The present invention can be said to be a smoke line that does not go out after ignition and can be used safely and with confidence in greenhouse gardening.

Add 400 f i of water to 20 r of cellulose, stir to make an aqueous solution, and add 30 g of water to this aqueous solution.
- Containing 11/2) Rocellulose 143 r, diatomaceous earth ioo y, potassium nitrate 50y1 diazinon 50V were added and stirred to prepare a mixed solution. This mixture 1
7- A rod was placed in the solution, and 3 m of 4.5% diameter straw was immersed in the lower part of the rod, pulled out through a die hole with a diameter of 4.6X, and then dried. Pass this string through the rod once again while dipping the lower part of the rod in the mixed solution.
Pulled out from the 6% die hole.

It was then dried and smoked to form parallel lines.

The straw used was 3m and 1 (1'), but the weight after making it into a smoking wire was 10W7m.This 2m smoking wire
When ignited from one end and burned using f, it continued to emit smoke without emitting any flame.

It took 11 minutes to complete the combustion.

Patent applicant: Asahi Kasei Industries, Ltd.

Claims (1)

[Claims] 1. The cellulose core string or cellulose containing at least one kind of combustion agent is formed by integrally molding the outer periphery of the core string with a mixture layer containing an agricultural chemical and at least one kind of combustion agent. Smoking wire 2 A smoking wire characterized in that the outer periphery of a cellulose core string or a cellulose core string containing at least one twisted part of six agents is integrally formed with a layer of a mixture containing an agricultural chemical combustion agent and a binder. Smoke wire & cellulose wick cord or cellulose wick impregnated with at least one combustible agent and coated by passing it through a solution containing a pesticide and a combustible agent or a solution containing a pesticide, a combustible agent and a binder. A method for manufacturing smoke wire characterized by