JPS60212265A - Spray method - Google Patents

Abstract

PURPOSE:To homogeneously spray a large amount of useful components over a wide range, by receiving a propellant and useful components in an aerosol container while receiving a diluent in other container and mixing the useful components and the diluent directly before spraying. CONSTITUTION:An aerosol container 9a is filled with content consisting of a propellant and useful components, and a diluent is received in a tank 1. When a button 14 is pushed, the useful components and the propellant gas are injected into a hollow part 21 and the resulting gas pressure is transmitted to the interior of the diluent tank 1 through a gas passing pipe 9 to raise the pressure in the tank 1 and the diluent 20 passes through a liquid passing pipe 15 to reach the hollow part 21 where the useful component-containing gas and the diluent are mixed to be injected from a jet orifice 13 in a mist form.

Description

[Detailed description of the invention] The present invention relates to an aerosol spray method.

More specifically, the present invention relates to a novel spraying method in which an active ingredient and a diluent, which are separately contained, are mixed immediately before spraying to emulsify or disperse them.

[Prior Art] Various aerosol products have been used to spray insecticides, paints, fire extinguishing fluids, deodorants, and the like. In such aerosol products, in order to uniformly spray the active ingredient over a wide range, the active ingredient is usually sprayed after being emulsified or dispersed in a diluent such as water or alcohol. Therefore, the active ingredient and the diluent are mixed and filled together with the propellant in the aerosol product.

On the other hand, since aerosol products use high-pressure gas, the capacity of one bottle is legally limited to 5 liters in order to ensure safety.
It is limited to 00d or less.

Therefore, the amount of active ingredients contained in one aerosol product is small, and there is a problem that it is more expensive than other spraying methods, such as using a compressor, especially when spraying a large amount. .

In order to deal with such problems, recently only the propellant is sealed in a pressure vessel, and a stock solution consisting of the active ingredient and diluent is stored under normal pressure in a separate container and then injected from the pressure vessel. An undiluted liquid isolation type spraying method has been proposed in which, when gas is ejected, the undiluted liquid is sucked up by a nozzle, such as a venturi set, and the undiluted liquid is thereby atomized.

However, since the active ingredient and diluent are in contact with each other for a long period of time, reactions such as decomposition may occur. Therefore, depending on the type of active ingredient, there is a problem in that inexpensive water or alcohol cannot be used as a diluent.

[Objective of the Invention 1] The present invention has been made to solve the above-mentioned problems, and it is possible to uniformly spray a large amount of the active ingredient over a wide area with one aerosol container, and The purpose of this invention is to provide a spraying method that allows a wide range of diluent types to be selected for the active ingredient.

[Structure of the Invention] In the spraying method of the present invention, an aerosol container is filled with a content consisting of a propellant and an active ingredient, a diluent is stored in another container, and the content is blown into a valve by the pressure of the propellant gas. By injecting the diluent from the valve and guiding the diluent into the passage from the valve to the nozzle, the contents and the diluent mix to emulsify or disperse the active ingredient in the diluent, and then the emulsified or dispersed liquid The structural feature is that the gas is sprayed from the nozzle using the pressure of the propellant gas.

[Embodiments] Next, the spraying method of the present invention will be explained with reference to the drawings.

FIG. 1 is a schematic cross-sectional view showing one embodiment of the sprayer according to the present invention, and FIG. 2 is a schematic cross-sectional view showing another embodiment of the sprayer according to the present invention.

In FIG. 1, (1) is a diluent tank that is airtight and can withstand internal pressure. The diluent tank (1) has an opening (2) at the top.
It consists of a container (3) having a container (3) and an openable/closable M (4) which is airtightly covered with an opening (2). A holding part (101) is formed on the top surface of the lid (4) to allow the aerosol container (9) to be attached and detached. Also, the diluent tank (1) and the aerosol container (9) are integrally formed. It is of course possible to do so.

The aerosol container (9) contains +! such as liquefied gas or compressed gas. It is filled with contents consisting of fi 124 agent and active ingredients. In addition, a container (3) as shown in Figure 1
and a lid (4) covering the upper end of the container.Instead, a container whose upper end is sealed and a lid that can be opened and closed over a mouth formed in a part of the container may be used.

In that case, there is an advantage that airtightness is improved.

At the top of the aerosol container (9), there is a
) has an outlet hole (11) that can communicate with the inside of the stem (
12) is provided. The stem (12) has a lead-out hole (1
1) constitutes an operating member for the opening/closing valve (not shown). There is a spout (13) at the top of the stem (12).
A button (14) having a button (14) is provided. Button (1
4) is a liquid pipe (it may be a hose; the same applies hereafter)
(15) is connected to one end (16). The other end (17) of the liquid pipe (15) passes through the lid (4) and is placed near the bottom (18) of the diluent tank (1) to supply the diluent (
20) Open inside.

The outlet hole (11) of the stem (12) and the diluent tank
-(1) may be a ventilation pipe (or hose).

Same as F) (19) communicates. That is, one end of the ventilation pipe (19) is connected to the stem (12),
The other end opens into the diluent tank (1) through the lid (4).

The spraying method of the present invention is carried out in the following steps using the spray i1N configured as described above.

The user of the sprayer presses the button (14) with the nozzle (13) pointing in the direction in which spraying is desired.

As a result, the opening/closing valve is opened and the aerosol container (
9), ie, the active ingredient and propellant gas (hereinafter simply referred to as gas) are ejected into the outlet hole (11) and the hollow part (21) of the button (14).

On the other hand, the gas pressure inside the aerosol container (9) is increased through the ventilation pipe (
19) into the diluent tank (1). Therefore, the pressure inside the diluent tank (1) increases, and the diluent (
20) is sucked up in the direction of arrow (B) through the liquid pipe (15) and reaches the hollow part (21).

The gas carrying the active ingredient and the diluent are then mixed in the hollow part (21) of the button (14), and the active ingredient is instantaneously emulsified or dispersed in the diluent.

A liquid in which the active ingredient is emulsified or dispersed in the diluted liquid is ejected from the spray nozzle (13) in the form of a mist, and the spraying method of the present invention is completed.

When using the sprayer shown in FIG. 1, there is the advantage that personnel can be sprayed with a mixture of active ingredient and diluent in a short period of time.

In the spraying method described above, the diluent (20) is pushed up by the gas pressure nozzle conveyed into the diluent tank (1) and sent to the hollow part (21) of the button (14), but in this case The spraying method of the invention is not limited to such cases, but can also be carried out using a sprayer as shown in FIG. 2, for example.

In the sprayer shown in Figure 2, a venturi set of suction mechanism (for example, a nozzle) is incorporated in the hollow part (21) of the button (14), and a ventilation pipe ((19) in Figure 1) is installed. I haven't been told. In other respects it is the same as the atomizer of FIG. Note that it is preferable to provide the diluent tank (1) of this product with a slot (23) communicating with the outside air because the suction action becomes smooth.

When the button (14) is pressed down, the contents are ejected from the aerosol container (9) in the direction of the arrow (A), and the resulting negative pressure in the hollow part (21) of the button (14) causes the diluted liquid to flow out. (20) is sucked up in the direction of arrow (B) through the liquid pipe (15).

Note that the active ingredient and the diluent are mixed in the hollow part (21), the active ingredient is emulsified or dispersed in the diluent, and the active ingredient is emulsified or dispersed in the diluent.
The spray from 3) is the same as in the case of FIG.

When using the sprayer shown in Figure 2, the active ingredient and diluent do not come into contact at all until just before spraying, so it can be used even when the active ingredient and diluent are extremely likely to cause a -C reaction. It has the advantage of being possible.

That is, in the present invention, the method by which the diluent is introduced into the passage between the valve and the nozzle of the aerosol container is not particularly limited, and various methods may be employed.

As the azole container in the present invention, in addition to conventionally known aerosol containers, for example, gas cylinders containing compressed gas can also be used.

The gas pressure is usually 1.0 to 74 bags/g at 20°C.
cL is preferably 2,0-5,0 Kg,/c
A grade A grade is used.

Gases include LPG, dimethyl ether (hereinafter referred to as D
ME), liquefied gas such as CFC, N2. N20,
Examples include compressed gas such as CO2.

Active ingredients include insecticides, repellents, herbicides, fungicides,
Examples include active ingredients for antifungal agents, detergents, deodorants, fragrances, paints, etc., and 1. J'f: Substances containing these active ingredients.

Although the mixing ratio of the gas and the active ingredient is arbitrary, it is preferable that the weight of the gas is about 10 to 1000 times the weight of the active ingredient.

Further, as the diluting liquid in the present invention, any liquid can be used as long as it is liquid at normal temperature and normal pressure, but inexpensive water, alcohol, etc. are preferable.

Further, it is preferable that the liquid is easily available so that it can be replenished as needed.

If necessary, a dissolution aid, a dispersion aid,
Emulsification aids, ultraviolet light inhibitors, etc. may be added.

[Example 1] Next, an example will be given to explain the effects of the spraying method of the present invention.

Examples 1- I got 5 sprayers. For Examples 1 to 4, the sprayer shown in FIG. 1 was used, and for Example 5, the sprayer shown in FIG. 2 was used.

The aerosol containers used in Examples 1 to 5 had a capacity of 1200 Id.

The active ingredient, dissolution/dispersion aid, gas, and diluent used in the sprayers of Examples 1 to 5 constructed as described above were added to the first
Shown in the table.

＼ Table 1 (Note) Pinamine forte is 3-allyl-2-methylcyclopenta-2-Icy4-on-
Trade name of 1-yl d-cis/trans-chrysanthemate.

Karasen is a generic name manufactured by Rohm and Haas, P
, C (dinocap), a trade name of a 2,6-dinitro-4-octylphenyl crotonic acid reactive isomer mixture.

Irgasan DP-300 is a 2.4.
Trade name of 4'-t-lichloro-2'-hydroxyphenyl ether.

DDVPha0.0-shimethi/L10-(2,2-shi')
u) Trade name of hinyl phosphate.

Neopinamine is N-(3゜4,.5
．． Trade name of 6-titrahy1-lonotalimid)-methyldfJ-cis/trans-chrysanthemate.

Niracol 5o-io is the trade name of Sorbitan Monoole 1, a nonionic surfactant manufactured by Nikko Kumicalus (11).

Next, we will show the measurement results when using the sprayers of Examples 1 to 5 configured as described above, that is, the spray amount when spraying for 30 seconds with the sprayers of Examples 1 to 5, and the total amount of the contents of the aerosol container sprayed. Table 2 shows the injection amount, the state of the sprayed mist, and the emulsification and dispersion state of the sprayed liquid in each case.

＼ ＼ ＼ The rOJ in the fog condition column of Table 2 shows that it is a normal mist at temperatures above 15°C, and that it is evenly dispersed when sprayed on a glass surface or paper. Indicates that it has been confirmed.

In addition, rOJ in the column of the emulsified dispersion state in the second s is 30
When the liquid sprayed for seconds is collected and visually observed in a glass container, no separation is observed and it is uniformly dispersed and emulsified. When the sprayed surface is cut into certain areas and the amount of active ingredient on each subdivided surface is measured,
This indicates that the active ingredient was found to be evenly distributed.

As is clear from the results in Table 2, according to the spraying method of the present invention, the volume (200 d
) It is possible to spray a large amount of liquid (a diluted liquid in which the active ingredient is emulsified or dispersed) that is 2 to 30 times as large as that of the active ingredient.

In addition, in the case of Examples 1 to 4, the amount of injection for 30 seconds (including the diluent) was the same as that of a conventional aerosol product (the active ingredient was emulsified and dispersed in the diluted liquid in advance and filled with the spray agent into an aerosol container). The amount of water is significantly increased compared to the amount of water (approximately 15 g in 30 seconds).

[Effects of the Invention] As described above, the method of the present invention has the advantage of increasing the degree of freedom in selecting the diluent because the diluent and the active ingredient are stored separately.

Furthermore, the spraying method of the present invention has the remarkable effect that a large number of active ingredients can be sprayed over a wide range with one aerosol product.

Additionally, since aerosol products can be filled with active ingredients and residue, aerosol containers with limited capacity can be used extremely efficiently, and the miniaturization of aerosol products makes transportation and storage easier. Qin has the excellent effect of making it easier and safer.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view showing one embodiment of the sprayer according to the present invention, and FIG. 2 is a schematic cross-sectional view showing another embodiment of the sprayer according to the present invention. (Main symbols in the drawing) (1): Diluent tank (9): Aerosol container (11): Outlet (13): Spout (+411 button (151: Liquid passage pipe (19): Ventilation pipe (20)/dilution Liquid (21): Figure 2 in the hollow part 21

Claims (1)

[Claims] '1 Fill an aerosol container with contents consisting of a propellant and an active ingredient, store a diluent in another container, inject the contents from a valve with the pressure of the propellant gas, and at the same time expel the diluent from the valve. By introducing the liquid into the passageway leading to the nozzle, the contents and the diluent mix, emulsifying or dispersing the active ingredient in the diluent, and then spraying the emulsified or dispersed liquid from the nozzle under the pressure of propellant gas. A spraying method characterized by: