JPS61245861A - Aerosol apparatus - Google Patents

Abstract

PURPOSE:To make it possible to keep the extrusion pressure in a container constant by a simple structure, by providing a replenishment container sealed with liquefied gas in an aerosol container and always enabling liquefied gas vapor to transmit through a part of the replenishment container. CONSTITUTION:A replenishment container 2 is made of a synthetic resin mate rial such as polyamide or polyethylene capable of permitting the transmission of liquefied gas vapor and sealed with liquefied gas such as flon 12 or flon 114. In the aerosol apparatus A having this replenishment container arranged therein, aerosol content 5 is injected to the outside during use and, when the pressure in the liquefied gas vapor in an aerosol container 1 is lowered, the pressure in the replenishment container 2 becomes relatively high and the vapor of the sealed liquefied gas G transmits through the wall of the container main body 21 or a lid 23 to fill the container 1. Because the replenishment of this gas is succeeded until pressure is well-balanced, the content 5 is injected to the last.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an aerosol device. More specifically, the present invention relates to an aerosol device having a replenishment container filled with liquefied gas for replenishing the extrusion pressure inside the container.

[Conventional technology]

Some aerosol devices include an aerosol container filled with a foam product, such as shaving foam, cleaner, or deodorant, with liquefied gas dissolved or dispersed therein. There are also aerosol devices filled with compressed gas. In these aerosol devices, when the aerosol contents are injected to the outside, the extrusion pressure inside the aerosol container decreases by an amount commensurate with the reduced volume of the aerosol contents. The dispersed liquefied gas evaporates and tries to maintain pressure equilibrium.

However, when much of the aerosol content is injected, the amount of gas in the aerosol device that uses liquefied gas or compressed gas in foam products is not large to begin with, so the gas that is the pressure source becomes insufficient, and the aerosol content is injected. May cause injection failure.

In order to solve such problems, for example, for foam products, as shown in Japanese Patent Publication No. 51-31966,
A method has been adopted in which a replenishment container separately filled with liquefied gas is provided inside the aerosol container. This aerosol device has an aerosol container (1) as shown in FIGS.
A replenishment container (2) containing liquefied gas is placed inside, and the replenishment container ('2J) is an aerosol container (1).
) The valve (2a), which opens in response to a decrease in pressure within the valve (2a), is mechanically constructed of a spring, a valve body, etc. The replenishment container ('2I) having such a mechanical valve (2a) has a complicated structure, so there is a problem that the manufacturing cost is high and failures are likely to occur.Also, the valve (2a) has to be operated by compressing a spring. Since the aerosol container (1) does not open, the reaction sensitivity is slow, and it will not open unless there is a relatively large pressure drop.Therefore, it is difficult to maintain the internal pressure inside the aerosol container (1) within a narrow fluctuation range.Furthermore, the aerosol container (1) is turned upside down. If the replenishment container (21) is turned upside down, the valve (2a) will come into contact with the liquefied gas, and the liquefied gas will not be vaporized but will be ejected as a liquid.

In view of these circumstances, the present invention has an extremely simple structure, is reliable, can maintain the internal pressure inside the aerosol container constant within an extremely narrow fluctuation range, and operates normally even if misused.

The object of the present invention is to provide an aerosol device that can hold several times the amount of liquefied gas that is an extrusion pressure source.

[Means for solving problems]

The aerosol device of the present invention includes a replenishment container in which liquefied gas is sealed inside an aerosol container filled with aerosol contents, and at least a portion of the wall of the replenishment container is made of a synthetic resin material that is permeable to liquefied gas vapor. The created configuration has been adopted and used.

[For production]

Since the replenishment container allows the liquefied gas vapor sealed inside to permeate through the wall surface, a valve mechanism is not required and the replenishment container can be constructed as a simple-shaped sealed container. Therefore, the structure is simple and the reliability is high. In addition, the permeation of liquefied gas vapor is carried out in such a way as to restore the equilibrium with the internal pressure inside the aerosol container, so replenishment of liquefied gas vapor from the replenishment container is done sensitively, and the internal pressure inside the aerosol container is can be kept constant within a very narrow range.

(Example) Next, the present invention will be explained in detail.

FIG. 1 is a longitudinal sectional view of the aerosol device (A) according to the first embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the supply container ('2J) shown in FIG. FIG. 4, a longitudinal sectional view of the aerosol device (B) of the embodiment, is an explanatory view when filling the supply container (20) with liquefied gas in the aerosol device I (B) shown in FIG. 3.

The aerosol device (A) will be explained based on FIGS. 1 and 2.

In the figure, (1) is an aerosol container, (2) is a supply container, and (3) is an aerosol valve.The aerosol valve (3) is attached to the top end of the aerosol container (1) with a mounting cap (4). A supply container (2J) is placed inside the aerosol container (1).This supply container (2) is floating in the aerosol contents (5) filled in the aerosol container (1). The aerosol valve (3) includes a valve housing (6) which is crimped onto the mounting cap (4), and a valve stem whose lower end is housed in the internal cavity of the valve housing (6). ) and a valve stem (consisting of a spring (8) interposed between the valve stem), which receives the aerosol content through a dip tube (9) connected to the lower end of the valve housing (6). ``Injection 001 is attached to the upper end of the valve stem (7) and communicates with the injection passage (11) in the valve housing (6). (12) is perforated, whereby the injection passage (11
) and the inside of the valve housing (6). In other words, when the valve stem (sword) is pushed down against the spring (8), the oris (12) will release the rubber gasket (
13) and opens into the valve housing (6) to inject the aerosol contents to the outside from the injection button η.

Now, the supply container (2), which is important in the present invention, will be explained next. This supply container (2) is made into a small sealed container, for example, as shown in FIG.

The illustrated supply container (2) is composed of a bottomed cylindrical container body (21) and a lid (23) having an annular lip (22),
A lid (23) is tightly fitted to the container body (21) to form a sealed container. ' and the supply container (2
) is filled with liquefied gas (G) in liquid form.

This supply container (2) is characterized by being made of a synthetic resin material through which liquefied gas vapor can pass, such as polyamide (for example, nylon 6, nylon 66, etc.),
Made from polyethylene, polypropylene, etc. The above-mentioned polyamide and polyethylene are particularly preferable because they have high permeability to liquefied gas vapor. Note that the part made of the above-mentioned 8 synthetic resin material may be the entire supply container (a) or a part of it. The gap can be formed only in the lid (23) or only in the container body (21), and in the container body (21), it can also be formed in a part of the bottom wall or the outer peripheral wall.

The liquefied gas sealed in the supply container (2) is selected from a gas that is incompatible with the stock solution of the aerosol contents, such as dichlorodifluoromethane (hereinafter referred to as Freon 12), Yajik-O lotetrafluoro-ethane (hereinafter referred to as Freon 1), etc.
14), liquefied petroleum gas, etc. The Freon 12 and the Freon 114 may be used alone, or may be used in combination. The blending ratio thereof is preferably 50 to 100% by weight, particularly 80% by weight or more based on the total amount of liquefied gas.

The amount of permeation of the liquefied gas vapor sealed in the supply container (2) varies depending on the type of liquefied gas, the type of synthetic resin material, and the pressure difference between the inside and outside of the supply container + 2, but the part of the wall made of the synthetic resin material The larger the surface area and the thinner the thickness, the better the penetration, and the smaller the surface and the thicker the thickness, the poorer the penetration. When designing the replenishment container ('2J), these considerations are taken into consideration, and the dimensions are determined according to the internal volume of the aerosol container (1) to be used. If the supply container (2) is made entirely of polyamide and the liquefied gas to be sealed is Freon 12, the length is 220-
50a+, diameter 5-15IIllI.

A supply container having a thickness of 1 to 3 am+ is preferably used.

In the ridged aerosol device (A), the aerosol contents (5) are sprayed outside during use, and the aerosol container (
1) When the pressure of the liquefied gas vapor in the tank decreases, the supply container [2
) becomes relatively high, and the vapor of the sealed liquefied gas (G) passes through the walls of the container body (21) and lid (23) and fills the aerosol container (1). Ru. Replenishment with liquefied gas vapor continues in this manner until the pressure is balanced, and the pressure in the aerosol container (1) remains approximately constant until most of the aerosol content (5) has been ejected.

In addition, in the case of the type in which the replenishment container (2J) is placed separately from the aerosol container (1) as in this example, the replenishment container (z When there is a large amount of liquefied gas (G) in the aerosol, it sinks into the aerosol contents (5), and a small amount of gas (G) may float as shown in the figure.

Next, the aerosol device (B) of the second embodiment will be explained based on FIGS. 3 and 4.

This aerosol mounting @ (B) has a mounting cap (
4) is characterized by a configuration in which a replenishment container (20) is integrally fixed to an aerosol valve (3) attached to the aerosol valve (3). This supply container (20) is the supply container (20) of the first embodiment (
It is made using the same synthetic resin material as a, but is constructed as follows. The whole is made of a double cylindrical member, and the outer cylinder (24) has a large diameter part (25) formed at the upper end, and a bottom plate (26) and a dip tube fitting part (27) at the bottom. It is formed. Inside! ! 1 (28) is shorter than the outer cylinder (24) and extends from the bottom plate (26) toward the upper end.

The upper part of the outer cylinder (24) is fitted onto the outer periphery of the valve housing (6), and the mounting cap (4) is caulked around the large diameter part (25). When installed in this way, the upper end of the inner cylinder (28) is in contact with the bottom surface of the valve housing (6), and the sealed liquefied gas (G) is prevented from leaking to the outside while it is in a liquid state. There is. Note that the aerosol valve (3) has substantially the same configuration as the aerosol device (A) of the first embodiment.

and the valve housing (6) of the aerosol valve (3).
) A passageway (29) for sealing liquefied gas (G) into the supply container (20) is formed between the outer circumferential wall of the outer cylinder (24) and the inner circumferential wall of the outer cylinder (24). In addition, supply ￥ V container (20
) A dip tube (9) is attached to the dip tube fitting part (21) at the lower end.

The supply container (20) in this embodiment is also filled with liquefied gas such as Freon 12 and Freon 114, as in the first embodiment. When the aerosol contents are injected and the pressure inside the aerosol container (1) decreases, the supply container (2)
The liquefied gas vapor is supplied to the supply container (20) until the pressure in the aerosol container (1) and the pressure in the liquefied gas vapor in the aerosol container (1) are balanced.
It permeates through the walls of the aerosol container (1), for example, the walls of the outer cylinder (24) and the inner cylinder (28), so as to keep the pressure inside the aerosol container (1) constant.

When filling the supply container (20) with liquefied gas (G), as shown in Fig. 4, the liquefied gas under pressure is passed through the valve stem (force-passing opening (4a)) of the mounting cap (4). The rubber gasket (13) can be bent and supplied into the replenishment container (20) through the passageway (29).As in this embodiment, the replenishment container (20) is fixed to an aerosol valve (3), etc., and the rubber gasket (13) is bent. 13) with a sealable passageway (29), etc.,
It is possible to replenish the liquefied gas (G) to the replenishment container (2o) any number of times, which is preferable for making the jet t14 function safer.

Two embodiments have been described above, but in both embodiments, the liquefied gas vapor replenished from the replenishment containers (2) and (20) serves as an auxiliary pressure source. When used in an aerosol device, the liquefied gas vapor acts like compressed gas and there is no pressure drop during use, and even if you accidentally use it upside down and only inject vaporized gas, it will be vaporized again. Since the gas is replenished, there is an advantage that even if there is misuse, the aerosol device can be replaced so that it is working properly.

(Effects of the Invention) In the aerosol device of the present invention, since the replenishment container does not use a mechanical valve mechanism, the structure is simple and the aerosol device can be highly reliable. Furthermore, since permeation of liquefied gas vapor occurs even with a slight pressure difference, the extrusion pressure within the aerosol container can be kept constant. Further, the amount of gas serving as an extrusion pressure source can be held in the aerosol container in an amount several times that of the compressed gas.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of the aerosol device (A) according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view of the supply container [2] shown in FIG. 1, and FIG. FIG. 4 is a longitudinal cross-sectional view of the example aerosol device (B), and FIG. FIG. 6 is an explanatory diagram of a conventional aerosol device. (Main symbols in the drawing) (1): Aerosol container (z: Supply container (3): Aerosol valve (G): Liquefied gas; t73 diagram

Claims (1)

[Scope of Claims] 1. A replenishment container containing liquefied gas is provided in an aerosol container filled with aerosol contents, and at least a portion of the wall of the replenishment container is made of a synthetic resin material that is permeable to liquefied gas vapor. An aerosol device characterized by being made. 2. The aerosol device according to claim 1, wherein the supply container is integrally attached to an aerosol valve. 3. The aerosol device according to claim 1 or 2, wherein the synthetic resin material constituting the supply container is polyamide or polyethylene. 4. The liquefied gas sealed in the supply container is a liquefied gas containing 80% by weight or more of dichlorodifluoromethane and/or dichlorotetrafluoroethane in the total amount. Aerosol device.