KR20220044240A - Reverse metering injection mechanism for an aerosol container and aerosol type product having the reverse metering mechanism - Google Patents

Abstract

In the reverse metering mechanism for discharging the contents of the contained metering chamber at the release stage of the spraying operation, the retention of foam components in the metering chamber is prevented.
When the outlet valve C is closed and the inlet valve B is opened based on the injection operation, the propellant such as liquefied gas from the container body side into the metering chamber A between the inlet valve B and the outlet valve C Reverse metering in which contents containing In the injection mechanism, an annular moving wall (6) is provided in the metering chamber (A), and a longitudinal outer coil spring (6a) for biasing the annular moving wall (6) in a direction in which the volume of the metering chamber (A) decreases. did. The metering chamber (A) is expanded by the pressure action of the contents flowing in from the container body side, and when the contents in which the foam component is generated are sprayed to the outside, the metering chamber (A) is contracted to prevent storage.

Description

Reverse metering injection mechanism for an aerosol container and aerosol type product having the reverse metering mechanism

According to the present invention, the container contents are accommodated in the quantification chamber of the inlet valve open state (outlet valve closed state) by the injection operation of the aerosol container, and the quantification of the outlet valve open state (inlet valve closed state) in the release step of this injection operation It relates to a reverse-quantitative spraying mechanism of a type in which the contained content of a seal is sprayed into an external space area.

In a content ejection operation such as a pressing operation, the metering chamber content is ejected by the operation of returning to the initial state of the operation unit after the completion of the reverse dosage injection mechanism.

That is, based on the injection operation, first, the outlet valve for content injection is closed and the inlet valve corresponding to the stem is opened, so that the container contents flow into the metering chamber between these valves. It relates to a reverse-quantitative spraying mechanism in which the contents are sprayed.

In the present invention, an annular moving wall provided as a component of the metering chamber is shifted to the injection mode of "opening the outlet valve", which increases the internal pressure of the metering chamber in the stage of releasing the injection operation by an elastic action. is biased by

With this moving wall shift, the foam component, which is generated in the metering chamber and will be described later, is also so-called pushed out to the external space area via the outlet valve, so that the foam component generated from the inflow propellant at every injection operation accumulates in the metering chamber. nothing happens

The reason why the foam component inside the metering chamber is generated is because the contents containing the propellant such as liquefied gas are vaporized in the metering chamber, and it can be said that this is a remarkable phenomenon when the liquid gas propellant is used.

When a foam component is produced|generated by the vaporization of the propellant in such a metering chamber, "content" is an undiluted|stock solution and a liquefied gas propelling agent. In addition, this foaming phenomenon may occur even when a compressed gas propellant soluble in the undiluted solution is used.

On the other hand, when a compressed gas propellant that is insoluble in the stock solution is used, the actual foaming phenomenon in the metering chamber does not occur.

In addition, in the present invention, the moving wall, which is a component of the metering chamber, is biased downward by an elastic member as shown. For this reason, unlike liquefied gas, the propellant in the aerosol container is compressed gas that is not contained in the metering chamber (which does not substantially dissolve in the stock solution). can be set.

The subject of the present invention is an aerosol-type product for various uses described below, such as "quantitative spout for enema foam".

The terms "upper" and "lower" in this specification respectively indicate the up-and-down positional relationship of the aerosol-type product in the illustrated inverted state described later. However, in the description of the following background art, the vertical positional relationship in the upright state is shown.

The present applicant fills the container contents into the metering chamber of "opening the inlet valve, closing the outlet valve" by a content injection operation (for example, pushing down (pressing down) operation), A reverse metering injection mechanism for spraying the contents of the metering chamber as a 'close, open the outlet valve' has been proposed (refer to Patent Document 1).

This metering injection mechanism is provided with the convenience of being injected into the external space area after being once accommodated in the metering chamber for each press-down operation and each subsequent return of the operation unit.

Japanese Laid-Open Patent No. 2007-204138

As described above, in the conventional reverse metering device, the contents of the container body are once housed in the metering chamber in a state of "opening the inlet valve, closing the outlet valve" according to the contents injection operation, and the contents of the metering chamber are received by releasing the injection operation. It is configured to be sprayed into this outer space region.

In addition, the foam component generated by vaporizing the contents including the propellant (eg, liquefied gas propellant) in the metering chamber may accumulate inside the metering chamber every time the aerosol container is sprayed.

Incidentally, the reason why the content of the metering chamber is injected into the external space region is that liquefied gas is used as a propellant of the container body stock solution.

According to the present invention, the foam component generated by vaporization of the propellant flowing into the metering chamber is vaporized in the inflow stock solution, by a shifting operation of the metering chamber moving wall in the direction of reducing the capacity of the metering chamber every time the injection operation is released, to the external space area, The purpose of this is to prevent the accumulation of foam components in the metering chamber.

In addition, even when using not only a liquefied gas that dissolves with a stock solution as a propellant, but also a compressed gas that is difficult to liquefy, a spraying mechanism is provided in which the contents contained in the metering chamber by the spraying operation are sprayed into the external space area by releasing the operation, It aims at enriching the reverse quantitative injection technique.

To this end, the present invention provides a so-called injection driving source when the contained contents are injected into the external space area by the internal pressure of the metering chamber, and the moving wall of a part of the metering chamber is subjected to an elastic force in the decreasing direction of the metering chamber space area. It is provided in such a way that it is biased by

That is, the moving walls constituting the metering chamber are set in a biased state in the direction of decreasing the capacity of the metering chamber by an elastic action, and counteract this elastic biasing force in response to the inflow of the contents into the metering chamber accompanying the injection operation. while moving in the direction of increasing the volume of the dosing chamber.

As the contents (undiluted solution, propellant) flow into the metering chamber, as described above, the liquefied gas propellant is vaporized in the stock solution and becomes a foam component inside the metering chamber.

After the user releases the injection operation, the moving wall of the metering chamber moves to the stop mode position by the action of the elastic biasing force, , the content of the metering chamber containing the foam component is sprayed into the outer space area.

MEANS TO SOLVE THE PROBLEM This invention solves the above subject as follows.

(1) Based on the injection operation to the aerosol container, the outlet valve for dispensing the contents (for example, the outlet valve C of the outward annular tapered surface 4f and the annular upper edge portion 5k described later) is closed, and this Inlet valve (for example, the inlet valve (B) of the transverse hole part 4c and annular gasket 4d mentioned later) which consists of a stem (for example, the stem 4 mentioned later) of the content passage mode in the outlet valve closed state) is opened, and the contents flow in from the container body side into the metering chamber (for example, the metering chamber (A) to be described later) between the inlet valve and the outlet valve, and the inlet valve is closed in the releasing step of the injection operation In the reverse quantitative injection mechanism of the aerosol container, the contents that have been introduced into the metering chamber are sprayed to the outside by opening the outlet valve,

a first elastic member for biasing the stem to the closed state of the inlet valve (for example, a longitudinal inner coil spring 4h to be described later);

a moving wall (for example, an annular moving wall 6 to be described later) which is a component of the metering chamber and for changing the volume of the metering chamber;

a second elastic member (for example, a longitudinal outer coil spring 6a to be described later) for biasing the moving wall in the direction of decreasing the volume of the metering chamber;

The moving wall is

In accordance with the injection operation, while opposing the elastic force of the second elastic member by the pressure action of the contents flowing into the metering chamber from the inlet valve in an open state, the metering chamber moves in the increasing direction;

with release of the injection operation, moving in the direction of decreasing the total volume by the elastic action of the second elastic member to change the outlet valve from the closed state until then to the open state;

The thing of the constitutional aspect is used.

(2) in (1) above,

The contents are

It is a stock solution and liquefied gas propellant,

The moving wall is

moving in the decreasing direction of the volume of the metering chamber to discharge the foam component generated by the vaporization of the liquefied gas propellant of the metering chamber in the undiluted solution from the outlet valve in an open state;

The thing of the constitutional aspect is used.

(3) in (1), (2) above,

The outlet valve is

set to each opposing part of the annular shape of the stem and the cover head covering the outside (for example, the lower cover head 5b to be described later),

The moving wall is

In the annular space region between the inside and outside cylindrical portions constituting the cover head (for example, between the inner and outer cylindrical portions 5d and 5e to be described later) in close contact with the respective cylindrical portions. acknowledgment,

The thing of the constitutional aspect is used.

An object of the present invention is a reverse dose injection mechanism for an aerosol container having such a configuration and an aerosol type product using the same.

According to the present invention, by adopting the above configuration, the foam component generated by the vaporization of the propellant flowing into the metering chamber in the inflow undiluted solution is removed from the external space by shifting the metering chamber moving wall in the direction of reducing the capacity of the metering chamber each time the injection operation is released. By sending it to the area, it is possible to prevent the accumulation of foam components in the metering chamber.

In addition, in the case of using not only the contents (undiluted solution) and liquefied gas that dissolves but also compressed gas that is difficult to liquefy as the propellant, the contents of the metering chamber are reliably injected into the external space area by releasing the operation with the injection operation. It is possible to enrich the quantitative injection technique.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the stop mode (inflow valve: closed, outflow valve: open) of this invention.
2 : is explanatory drawing which shows the fixed-quantity chamber setting mode (cover head: micromovement upward as shown, inflow valve: closing, outflow valve: closing) in the initial stage of injection operation.
Fig. 3 is an explanatory diagram showing the contents inflow mode (cover head and stem: integral movement upward as shown, inflow valve: open, outflow valve: closed) in the injection operation following Fig. 2 .
Fig. 4 shows the stem bottom dead center mode (cover head and stem: integrally moved downward as shown, internal pressure of the metering chamber: increased, inlet valve: closed, outlet valve: closed) in the initial stage of releasing the injection operation. is an explanatory diagram.
Fig. 5 is an explanatory view showing the injection mode (cover head: micro-moving downward as shown, inflow valve: closed, outflow valve: open) of the contents of the metering chamber at the time of releasing the injection operation following Fig. 4;

The form for implementing this invention is demonstrated using FIG.1 - FIG.5.

Here, in Fig. 3, the foam component is generated in the metering chamber (A), in Fig. 4, the generated foam component is stored in the metering chamber (A), and in Fig. 5, the foam component is stored in the metering chamber (A). The component is shown moving via the outlet valve (C) to the outer space region.

When a liquefied gas propellant or a compressed gas propellant that is soluble in a undiluted solution is used, accumulation of the above-described foam component in the metering chamber accompanying vaporization in the undiluted solution becomes a problem.

As described above, the terms "upper" and "lower" respectively indicate the positional relationship in the illustrated inverted use state of the aerosol-type product. For example, we will state that the stem is biased downward (rather than upward) by a coil spring.

1 to 5,

A is a space area continuously set between the inlet valve and the outlet valve, and a metering chamber in which the content to be sprayed into the outer space area is accommodated in accordance with the content ejection operation;

B is an inflow valve of the metering chamber A, which is composed of a horizontal hole 4c to be described later and an annular gasket 4d to open and close the same to be described later;

C is the outflow valve of the metering chamber A comprising an outward annular tapered surface 4f to be described later and an annular upper edge portion 5k described later to be in contact with and separate therefrom.

are respectively shown.

also,

1 is an aerosol container containing contents as an injection target and liquefied gas as a propellant;

2 is a mounting cup mounted on the lower opening of the aerosol container,

3 is a housing for passing the contents fitted and fixed in the mounting cup (2);

3a is an opening for inflow of contents formed on the circumferential surface of the housing 3

are respectively shown.

also,

4 is a stem whose upper portion is disposed inside the housing 3 to exhibit a known inlet valve action and an outlet valve action between an annular upper edge portion 5k of the lower cover head 5b to be described later;

4a is the upper part of the stem showing the inlet valve action;

4b is a stem lower portion fitted with the stem upper portion 4a to exhibit an outlet valve action;

4c is a total of two transverse holes formed in the stem upper portion (4a) to constitute the inlet valve,

4d is a well-known annular gasket constituting the inlet valve between the horizontal hole portion 4c and the external opening side;

4e is a total of four vertical holes for passing the contents formed in the stem lower portion (4b),

4f is an outwardly narrowing outwardly annular taper surface formed on the lower end side of the stem lower portion 4b and narrowing downward constituting the outlet valve between the annular upper edge portion 5k to be described later,

4g is an upward annular step portion formed on the upper side of the outer circumferential surface of the stem lower portion 4b and held in engagement with the inner circumferential surface of the inner cylindrical portion 5d to be described later;

4h is a longitudinal inner coil spring for stem biasing which is disposed inside the housing 3 and biases the stem 4 to the closed state of its inlet valve B.

are respectively shown.

also,

5 is a cover head (upper cover head 5a + lower cover head 5b) held in engagement with the stem lower portion 4b;

5a is an upper cover head made of an annular concave part with an open bottom, engaged with the outer circumferential surface of the stem lower part 4b and provided with an annular moving wall 6 to be described later in the annular inner space region thereof;

5b is a lower cover head that is integrally fitted with the upper cover head 5a and constitutes an outlet valve between the outward annular tapered surface 4f of the stem 4;

5c is a part of the upper cover head 5a, and is a downward annular surface that supports the upper end side of a vertical outer coil spring 6a to be described later at all times;

5d is a part of the upper cover head 5a, is formed in a manner continuous downward from the inner end side of the downward annular surface 5c, and includes the outer peripheral surface of the stem lower part 4b (upward annular stepped portion 4g, etc.) The inner cylindrical part that can move relative to the up and down direction between

5e is a part of the upper cover head 5a, and the outer cylindrical portion continues downward from the outer end side of the downward annular surface 5c;

5f is a vertical rib-shaped portion (refer to Fig. 3) formed in the vertical direction of the illustrated upper inner peripheral surface of the outer cylindrical portion 5e and setting the top position of the annular moving wall 6 to be described later;

5g is an outer peripheral concave portion formed on the upper outer peripheral end side of the lower cover head 5b and fitted with the lower annular portion of the outer cylindrical portion 5e;

5h is a part of the lower cover head 5b, and an upward annular surface supporting the annular moving wall 6 to be described later when in the stationary mode of FIG. 1;

5j is the central vertical cylindrical part for dispensing the contents formed in the center of the bottom part of the metering chamber (A),

5k is an annular upper edge portion showing the upper opening side of the central longitudinal tubular portion 5j and showing the outflow valve action between the outward annular tapered surface 4f of the stem 4,

5m is fitted to the outer circumferential surface of the central vertical cylindrical portion 5j of the lower cover head 5b to form a content passage portion in the horizontal direction shown, and a head operation portion used for pressing operation for dispensing the contents;

5n is for dispensing the contents formed inside the head manipulation unit 5m, and is an approximately L-shaped passage

are respectively shown.

also,

6 is held on the upward annular surface 5h of the lower cover head 5b in the stop mode of FIG. 1 and is a propellant action accompanying the inflow of the contents into the metering chamber A by the contents injection operation, which will be described later. An annular moving wall that moves upward while opposing the elastic force of the outer coil spring 6a;

6a is a longitudinal outer coil spring disposed between the downward annular face 5c of the upper cover head 5a and the upper face portion of the annular moving wall 6, showing the annular moving wall 6, for biasing downward;

6b is an inner skirt-shaped portion that is formed on the inner peripheral end of the annular moving wall 6 and is in close contact with the outer peripheral surface of the inner cylindrical portion 5d of the upper cover head 5a, thereby exhibiting a sealing (sealing) action to the metering chamber A. ,

6c is an outer skirt-shaped portion formed on the outer peripheral end side of the annular moving wall 6 and in close contact with the inner peripheral surface of the outer cylindrical portion 5e of the upper cover head 5a to exhibit a sealing action to the metering chamber A;

6d is an annular concave portion formed on the upper surface portion of the annular moving wall 6 and supporting the illustrated lower end side of the longitudinal outer coil spring 6a;

6e is a total of six longitudinal ribs formed on the outer inner circumferential surface of the annular concave portion 6d to maintain the so-called radial position of the longitudinal outer coil spring 6a;

6f is formed in the inner and outer radial direction of the lower surface of the annular moving wall 6, and the contents into the metering chamber space area outside the annular moving wall (between the outer cylindrical portion 5e of the upper cover head 5a) A total of four groove-shaped portions for setting a so-called initial passage area for inflow;

6g is an outer annular upper surface formed on the upper side of the outer skirt-shaped portion 6c, and abutting with the lower end surface of the longitudinal rib-shaped portion 5f of the upper cover head 5a, thereby defining the top position of the annular moving wall 6

are respectively shown.

Here, the housing 3, the stem 4, the cover head 5, the head operation part 5m and the annular moving wall 6 are, for example, polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate, etc. It is made of plastic made of

In addition, the aerosol container 1, the longitudinal inner coil spring 4h, and the longitudinal outer coil spring 6a are made of plastics and a metal thing, for example. The mounting cup 2 is made of metal, for example.

The metering chamber A is approximately a stem inner space area downstream from the inlet valve B and an annular moving wall 6 and a stem inner space area upstream from the outlet valve C and shown in the inner cylindrical portion 5d. ) shown in the lower annular space area and the like.

The main characteristic of the illustrated reverse metering mechanism is that the annular moving wall 6, which is a so-called component of the metering chamber A, is shown downward by the vertical outer coil spring 6a, that is, the metering chamber A which is the object of content accommodation. ) is elastically biased in the direction of reducing the volume of

By the illustrated downward elastic action on the annular moving wall 6, the propellant (liquefied gas propellant) flowing into the metering chamber A is vaporized and the foam component generated is discharged to the outside space area, and the metering chamber A It is blocking|preventing that a foam component is stored in (A).

In addition, the contents contained in the metering chamber A are reliably delivered to the external space area not only when using a liquefied gas propellant that dissolves with the contents (undiluted solution), but also when a compressed gas propellant that can be said to be insoluble in the stock solution is used. is sprayed

When in the stop mode of Figure 1,

(11) The stem 4 is biased downward by the elastic force of the longitudinal inner coil spring 4h, so that the transverse hole 4c of the inlet valve B is an annular gasket 4d in the form of an annular horizontal plane. closed with

(12) The annular moving wall 6 is biased downward by the elastic force of the longitudinal outer coil spring 6a, and the portion on its lower surface where the groove-shaped portion 6f is not formed is the lower cover head 5b Abuts against the upward annular face (5h) of

(13) In the upper cover head 5a and the lower cover head 5b, the inner peripheral surface of the inner cylindrical portion 5d and the outer peripheral surface of the stem lower portion 4b are partially engaged, and at this time, the outlet valve C is closed. The constituting outward annular tapered surface 4f and the annular upper edge portion 5k are spaced apart,

(14) In the metering chamber A, the inlet valve B (the transverse hole portion 4c and the annular gasket 4d) is closed, and the outlet valve C to the passage portion 5n (outward annular tapered surface 4f) is closed. ) and the annular upper edge part (5k)) open

state is set.

That is, the inlet valve (B) is closed, the outlet valve (C) is in an open state, and the contents of the aerosol container (1) do not flow into the metering chamber (A).

FIG. 2 shows a state in which the outlet valve C is closed immediately after the start of the content injection operation, and the space region for inflow of the contents of the metering chamber A is set.

In addition, in the content injection operation, the user presses the head operation unit 5m with a finger while holding the aerosol container 1, for example, and the cover head 5 integral therewith and the stem 4 interlocking with it. It is to move the city upwards.

At this time, the integral body of the cover head 5 and the head operating portion 5m moves slightly upward with respect to the stem 4 and the aerosol container 1 so that its annular upper edge portion 5k has an outwardly annular tapered surface 4f. In the so-called close to , the outlet valve C is set to the closed state.

The stem 4 is biased downward as shown by the longitudinal inner coil spring 4h, and remains in the substantially stationary mode position.

FIG. 3 is a state in which the inlet valve B is opened by the stem 4 moving upward with respect to the aerosol container 1 and the housing 3 in accordance with the upward injection operation shown in FIG. 2 , that is, the aerosol container. It shows the state in which the contents of (1) flow into the metering chamber (A) of "close the outlet valve" and are stored there.

The contents of the metering chamber become the object of injection into the external space area at the time of releasing the injection operation.

In addition, in the metering chamber, the liquefied gas propellant introduced thereto is vaporized in the inflow undiluted solution, and a foam component is generated.

3, with the annular upper edge portion 5k of the cover head 5 abutting the outward annular tapered surface 4f of the stem 4, the stem 4, the cover head 5 and The whole head operation part 5m is moving upward while opposing the elastic force of the longitudinal inner coil spring 4h.

By the upward movement of the stem 4 shown, the inner portion of the annular gasket 4d is displaced upward as shown, and the inlet valve B into the metering chamber A shifts from the closed state until then to the open state. .

With this shift in the opening state of the inlet valve B, the contents of the aerosol container 1 are changed by the arrows "opening 3a of housing 3 - inner peripheral surface of housing 3 and stem upper part 4a)" In the annular shape between the outer peripheral surfaces of the dosing chamber ( A) flows into

Further, since the lower end portion of the inner cylindrical portion 5d of the upper cover head 5a is spaced apart from the upward annular surface 5h it is opposed to, the contents passing through the vertical hole portion 4e are transferred to the annular moving wall 6 It also flows into the lower spatial region shown in

The internal pressure of the metering chamber increases due to the inflow of the contents into the metering chamber A in the illustrated lower space region of the annular moving wall 6, and the annular moving wall 6 moves downward of the vertical outer coil spring 6a. It is driven upward as shown while opposing the elastic force.

The illustrated moving upwardly moving annular moving wall 6 stops in a state in which its outer annular upper surface 6g is in contact with the lower end surface portion of the longitudinal rib portion 5f of the outer cylindrical portion 5e.

Fig. 4 shows the inlet valve in which the stem 4 immediately after releasing the injection operation following the release of Fig. 3 is returned to the lower initial position (the stop mode position in Fig. 1) shown by the elastic action of the longitudinal inner coil spring 4h. Closed” state is shown.

In this stem bottom dead center mode, the cover head 5 cooperates with the downwardly returning stem 4 shown relative to the aerosol container 1 and the housing 3, and the outwardly annular taper surface of the outlet valve C (4f) and the annular upper edge portion 5k abut.

That is, both the inflow valve B and the outflow valve C are in the "closed" state in the so-called instantaneous state of FIG. In the metering chamber (A), the contents of the aerosol container (1) are in a state of being accommodated according to the route of FIG. At this time, the foam component of FIG. 3 is also accommodated in the metering chamber (A).

And when a compressed gas propellant soluble in a liquefied gas propellant or a undiluted solution is used, the pressure at the time of being accommodated is maintained, and the internal pressure of the metering chamber A is maintained high.

Also, even when a compressed gas propellant that does not dissolve in the undiluted solution is used, the annular moving wall 6 constituting the metering chamber A is driven downward by the elastic action of the vertical outer coil spring 6a. , since the contents containing the foam component are compressed, the internal pressure of the metering chamber (A) is high.

By this internal pressure, the stem 4 and the cover head 5, which are set in the mode in which the relative movement is possible, move so as to shift the outlet valve C to an open state. For example, as illustrated, the cover head 5 moves downward relative to the stem 4 . At this time, the stem 4 remains in its initial position (stop mode position) with respect to the housing 3 as shown in FIGS. 4 and 5 .

With the movement of the cover head 5, the content containing the foam component of the metering chamber A passes through the outlet valve C shifted to the open state in the path of the black arrow in FIG. 5, and the head operation unit 5m ) from the passage portion 5n to the external space area.

And even if the internal pressure of the metering chamber A decreases with the injection, the annular moving wall 6 driven by the vertical outer coil spring 6a moves, so that the content containing the foam component is removed as much as possible into the metering chamber ( It is pushed out from A), and the retention of the foam component is prevented.

In addition, since the lower end of the inner cylindrical portion 5d is spaced apart from the upward annular surface 5h as described above, the contents of the illustrated lower space region of the annular moving wall 6 at the substantially bottom dead center are also separated from this spaced portion. through the outlet valve (C).

Although the illustrated reverse dose injection mechanism is intended for upright use, the present invention is not limited thereto, and it is needless to say that it can be applied to upright use in which the cover head 5 is set upward. In this case, the positional relationship of the upper and lower is reversed from that described in this specification.

Examples of aerosol products to which the present invention is applied include detergents, cleaning agents, coolants, muscle anti-inflammatory agents, hair growth agents, hair dyes, hair styling agents, hair treatment agents, sunscreen agents, lotions, cleansing agents, anti-inflammatory agents, Cosmetics, shaving foam, food, drops (vitamins, etc.), pharmaceuticals, quasi-drugs, horticultural agents, insecticides, insect repellents, animal repellents, deodorants, laundry paste, fire extinguishers, paints, adhesives, lubricants, urethane foams, etc. There are those of various uses of

As the contents accommodated in the aerosol container, various types such as liquid, cream, and gel are used. Components to be blended with the contents are, for example, powdery substances, oil components, alcohols, surfactants, high molecular weight compounds, active ingredients for each use, water, and the like.

As a powdery substance, metal salt powder, inorganic substance powder, resin powder, etc. are used. For example, talc, kaolin, aluminum hydroxychloride (aluminum salt), calcium alginate, gold powder, silver powder, mica, carbonate, magnesium chloride, silica, zinc oxide, titanium oxide, zeolite, nylon powder, barium sulfate, cellulose, these use a mixture of

Examples of the oil component include silicone oil such as dimethylpolysiloxane, ester oil such as isopropyl myristate, palm oil, eucalyptus oil (eucalyptus oil), camellia oil, olive oil, jojoba oil, etc., hydrocarbon oil such as liquid paraffin, myristic Fatty acids, such as acid, palmitic acid, stearic acid, linoleic acid, and linolenic acid, etc. are used.

As alcohols, monohydric lower alcohols, such as ethanol, monohydric higher alcohols, such as lauryl alcohol and cetanol, polyhydric alcohols, such as ethylene glycol, 1, 3- butylene glycol, and glycerol, etc. are used.

Examples of the surfactant include anionic surfactants such as sodium lauryl sulfate, nonionic surfactants such as polyoxyethylene alkyl ether and polyglycerol fatty acid ester, amphoteric surfactants such as lauryl dimethylamino acetate betaine, and alkyl chloride Cationic surfactants, such as trimethylammonium, etc. are used.

As a high molecular compound, hydroxyethyl cellulose, methyl cellulose, gelatin, starch, casein, xanthan gum, a carboxyl vinyl polymer, etc. are used.

As active ingredients for each application, dyes such as paraphenylenediamine and aminophenol, oxidizing agents such as hydrogen peroxide, setting agents such as acrylic resins and waxes, ultraviolet absorbers such as 2-ethylhexyl paramethoxycinnamate, retinol, Vitamins such as dl-α-tocopherol, moisturizing agents such as hyaluronic acid, anti-inflammatory analgesics such as methyl salicylate and indomethacin, disinfectants such as sodium benzoate and cresol, pest repellents such as pyrethroids and diethyltoluamide, paraphenol Restrictive agents such as zinc sulfonate, cooling agents such as camphor (camphor) and menthol, anti-asthma drugs such as ephedrine and adrenaline, sweeteners such as sucralose and aspartame, adhesives and paints such as epoxy resin and urethane, paraphenylene Dyes such as diamine and aminophenol, oxidizing agents such as aqueous hydrogen peroxide, and fire extinguishing agents such as ammonium dihydrogen phosphate and sodium and potassium bicarbonate are used.

In addition to the above contents, suspending agents, emulsifying agents, antioxidants, sequestering agents, etc. can also be used.

As gas for injection, liquefied gas, such as liquefied petroleum gas, dimethyl ether, hydrofluoroolefin, and compressed gas, such as carbon dioxide gas, nitrogen gas, compressed air, nitrous oxide, oxygen gas, rare gas, these mixed gas, use it

A: Weighing room
B: Inlet valve (horizontal hole (4c) + annular gasket (4d))
C: Outflow valve (outward annular tapered surface (4f) + annular upper edge part (5k))
1: aerosol container
2: Mounting cup
3: housing
3a: opening
4: Stem
4a： Upper part of the stem
4b: lower part of the stem
4c: Horizontal hole
4d: annular gasket
4e: vertical hole
4f: Outward annular tapered surface
4g: upward annular step
4h: Vertical inner coil spring
5: cover head
5a: upper cover head
5b: lower cover head
5c: downward annular face
5d: Inner cylindrical part
5e: Outer cylindrical part
5f: Vertical rib portion (refer to Fig. 3)
5 g: Outer circumference concave
5h: upward annular face
5j: Central vertical tubular part
5k: Annular upper edge portion
5m: Head control panel
5n: Approximate L-shaped passage
6: annular moving wall
6a: Vertical outer coil spring
6b: Inner skirt-shaped part
6c: Outer skirt-shaped part
6d: Annular concave part
6e: Vertical rib section
6f: Groove

Claims (4)

Based on the injection operation to the aerosol container, the outlet valve for dispensing the contents is closed, and in the closed state of the outlet valve, the inlet valve comprising the stem of the contents passage is opened, so that the metering chamber between the inlet valve and the outlet valve is on the container body side In the reverse quantitative injection mechanism of an aerosol container, in which contents are introduced from the air, and the contents that have flowed into the metering chamber are discharged to the outside by closing the inlet valve and opening the outlet valve in the releasing step of the injection operation,
a first elastic member for biasing the stem to a closed state of the inlet valve;
a moving wall that is a component of the metering room and is for changing the volume of the metering room;
a second elastic member for biasing the moving wall in a direction of decreasing the volume of the metering chamber;
The moving wall is
In accordance with the injection operation, moving in the direction of increasing the volume of the metering chamber while opposing the elastic force of the second elastic member by the pressure action of the contents flowing into the metering chamber from the inlet valve in an open state;
with release of the injection operation, moving in the direction of decreasing the volume of the metering chamber by an elastic action of the second elastic member to change the outlet valve from the previously closed state to the open state;
Reverse quantitative injection mechanism of the aerosol container, characterized in that. According to claim 1,
The contents are
It is a stock solution and liquefied gas propellant,
The moving wall is
moving in the direction of decreasing the volume of the metering chamber to discharge the foam component generated by the vaporization of the liquefied gas propellant of the metering chamber in the undiluted solution from the outlet valve in an open state;
Reverse quantitative injection mechanism of the aerosol container, characterized in that. 3. The method of claim 1 or 2,
The outlet valve is
and each opposing part of the annular shape of the cover head around the stem and its outer periphery;
The moving wall is
disposed in an annular space region between each of the inner and outer cylindrical portions constituting the cover head in close contact with the respective cylindrical portions;
Reverse quantitative injection mechanism of the aerosol container, characterized in that. The aerosol container according to any one of claims 1 to 3 is provided with the reverse fixed-quantitation injection mechanism, and the propellant and the contents of the stock solution are accommodated therein.
An aerosol-type product, characterized in that.

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