JPH09255059A - Aerosol spray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aerosol spray having a delay spraying device to start the spraying when the prescribed time is elapsed after a valve is opened. SOLUTION: A water soluble disintegrating agent 40 is fitted to an upper part of an orifice part 33 of a cap 30 which is also used as a push button fitted to a valve stem 3 of an aerosol can 1. A holder 41 holds the disintegrating agent. The left side of the center chain line in the figure indicates the non- operating condition, and the right side indicates the condition where the button 30 is depressed. When the button 30 is depressed, a tip part 22 of a shoulder cover 20 is engaged with a button locking part 35 to hold the button in the depressed condition (the condition where the valve stem 3 is depressed and the valve is opened). When water or water solution is poured in a water pouring part 37, the disintegrating agent successively solved or disintegrates through solution, and the spraying is started from the orifice part 33 after the prescribed time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a delayed injection type aerosol injector for injecting a chemical solution after a predetermined time has elapsed after injection setting.

[0002]

2. Description of the Related Art An aerosol ejector normally ejects a chemical liquid directly by pressing down a push button with a finger. But for a specific purpose,
For example, in the case of exterminating unpleasant pests, deodorizing inside the vehicle, sterilizing, deodorizing inside the toilet or room, sterilizing, mold removal in the bathroom, set the aerosol injector to the injection state and hold it, and remove a large amount of chemical liquid. I want to spray. However, with conventional aerosol injectors, the injection starts immediately after the push button is pressed, so it is necessary to evacuate immediately after the injection is set without avoiding problems such as the chemical getting on the body or sucking the chemical. It was also inconvenient to use. Therefore, it is necessary to provide a delayed injection means for reliably injecting the fuel when a predetermined time has elapsed after the injection is set.

[0003]

In order to solve the above-mentioned problems, the present invention comprises dissolving or dissolving a water-soluble disintegrating agent above or below an orifice in water or an aqueous solution or disintegrating while dissolving. The present invention provides an aerosol injector configured such that the injection path is opened when a predetermined time has elapsed after the injection is set.

[0004]

1 is a sectional view showing an embodiment of the present invention, in which 1 is an aerosol can, 2 is a mount, 3 is a valve stem protruding from the upper part of the can, and 20 is attached to the mount. The shoulder covers are shown respectively. Shoulder cover 20
Is locked to the mount by the locking portion 21. 30
1 is a push button combined cap, the left side of the center dashed line XX in FIG. 1 is the position when the push button 30 is not pressed down, and the right side is the position when the push button 30 is pressed down. Each one is shown.

The push button 30 is fitted to the valve stem 3 at the valve stem fitting portion 31. Reference numeral 32 is a liquid passage above the valve stem, 33 is an orifice portion for ejecting a chemical liquid, 34 is a cylindrical portion, and 35 is a protrusion-like locking portion. When the push button 30 is pushed down as shown on the right side of the drawing. The engaging portion 35 engages with the tip portion 22 of the shoulder cover 20 and holds the push button 30 in a depressed state. Reference numeral 36 denotes a push-down portion which is pushed down by pushing a finger on the push button 30. 40
Is a water-soluble disintegrant, and in the example shown in the drawing, the orifice portion 33
, But may be fitted in the liquid passage below the orifice 33. 41 is a presser for holding the disintegrating agent so that it does not come out, and 42 is a packing made of an elastic body such as rubber inserted in consideration that the water-soluble disintegrating agent described later may not always be a completely airtight body. Is. This packing is ejected by the injection pressure due to the dissolution of the disintegrant 40, and the liquid medicine is ejected from the orifice portion 33.

As the water-soluble disintegrant, natural polymer compounds (sugars) such as starch, cellulose, sucrose and lactose,
Alternatively, a water-soluble synthetic polymer compound such as polyvinyl alcohol, a water-soluble inorganic substance such as sodium bicarbonate, or a mixture thereof is solidified into tablets so as to be disintegrated in about 5 to 10 seconds by various blending. As a liquid for disintegration, in addition to water, a small amount of surfactants (anionic, cationic, nonionic, zwitterionic surfactants), water-soluble low-boiling point solvents (ethanol, acetone, etc.) are dissolved in water. The aqueous solution with reduced surface tension is used.

[0007]

In the aerosol injector for delayed injection according to the present invention, even if the push button 30 is pushed down and the valve stem 3 is pushed down (right side of FIG. 1), the chemical liquid ejected from the valve is water-soluble. It is blocked by the agent 40 and does not spray from the orifice portion 33. (In consideration of the case where the disintegrating agent is not completely airtight, it is possible to insert the packing 42 as shown in the drawing.) Therefore, if water or an aqueous solution as described above is poured into the water injection portion 37, the disintegrating agent 40 Melts or disintegrates while melting in sequence for a predetermined time, and delayed injection starts after a predetermined time, so there is no fear of human being touching or inhaling the drug solution. As described above, after the push button is pushed down, the button locking portion 35 is engaged with the tip end portion 22 of the shoulder cover, and the push button is locked.

When the disintegrant is fitted in the liquid passage below the orifice, the aerosol composition composed of the undiluted solution for aerosol and the propellant for aerosol acts from below to dissolve or dissolve the disintegrator in sequence and disintegrate it. In the case where the disintegrant is fitted under the orifice, it is difficult to dissolve the disintegrant due to the air phase of the space and the vapor phase of the propellant even after the valve is opened. It is desirable to replace the gas phase of the agent with the solution before injection. FIG. 2 shows an example of components of the water-soluble disintegrant and an example of dissolution in water or disintegration time due to dissolution.

[0009]

As described above, the present invention provides an aerosol injector having the above-mentioned structure and performing a reliable delay operation with a relatively simple structure.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a table showing examples of water-soluble disintegrants.

[Explanation of symbols]

 1 Aerosol can 2 Mount 3 Valve stem 20 Shoulder cover 21 Locking part 22 Tip part 30 Push button combined cap 31 Valve stem fitting part 32 Liquid passage 33 Orifice part 34 Cylindrical part 35 Locking part 36 Pushing part 37 Water injection part 40 Water-soluble disintegrant 41 Pressing 42 Packing

Claims (5)

[Claims] 1. An aerosol injector configured to fit a push button to a nozzle stem projecting from the upper end of an aerosol can and to hold the jet state set by pushing down the push button. Insert a water-soluble disintegrating agent that disintegrates or dissolves in water or an aqueous solution into or above the part, and dissolves or dissolves the water-soluble disintegrating agent with water or an aqueous solution poured to the outside of the disintegrating agent, and after injection setting An aerosol injector, characterized in that the injection path is opened after a predetermined time, and delayed injection is performed. 2. An aerosol injector which is configured such that a push button is fitted to a nozzle stem protruding from the upper end of an aerosol can and the push button is pushed down to maintain the set injection state as it is. A water-soluble disintegrant is fitted into the liquid passage below or below, and the water-soluble disintegrant is dissolved or dissolved while being dissolved or dissolved from the inside of the liquid passage by an aerosol composition consisting of a water-containing stock solution for aerosol and a propellant for aerosol, and then jetted. An aerosol injector characterized in that a liquid passage is opened and a delayed injection is performed after a predetermined time has elapsed after the setting. 3. A natural polymer compound such as starch, cellulose, sucrose, lactose or the like, or polyvinyl alcohol, which dissolves or dissolves in water or an aqueous solution or an aerosol composition as the water-soluble disintegrating agent in a predetermined time. 3. A water-soluble synthetic polymer compound such as or the like, or a water-soluble inorganic substance such as sodium bicarbonate or a mixture thereof, which is solidified into a tablet by various blending.
The aerosol injector according to. 4. The aqueous solution is prepared by dissolving a small amount of a surfactant, a water-soluble low-boiling solvent, etc. in water to reduce the surface tension of the aqueous solution, or by adding a small amount of acid to water to carry out a chemical reaction. The aerosol ejector according to claim 1, which dissolves a disintegrant. 5. The aerosol injector according to claim 1, wherein the disintegrant is held in the push button by a pressing body.