JP2009286469A - Valve for aerosol container, aerosol container equipped with the same, aerosol product whose aerosol container is filled with content - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve for an aerosol container which is capable of preventing the clogging of an inflow pore due to the precipitation of sludge and impurities present within a housing, an aerosol container equipped with the valve, and an aerosol product including the aerosol container which is filled with content. <P>SOLUTION: The valve for the aerosol container comprises the housing to be provided on the top part of an aerosol container body, from which the content filling the aerosol container body inflows through an inflow pore, and a stem protrusively provided on the top part of the housing while upwardly-biased by a biasing means. The valve for the aerosol container is such that at the bottom of the interior of the housing, the opening of the inflow pore is characteristically located at a position higher than the lowest part of the bottom, while the aerosol container is equipped with the foregoing valve and the aerosol product has the foregoing aerosol container with content filling it. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a valve for an aerosol container for preventing clogging inside the housing (particularly, clogging of an inflow hole (under tap hole) of the housing), an aerosol container provided with the valve, and the contents filled in the aerosol container. Related aerosol products.

  Aerosol products filled with the contents of a stock solution and a propellant in an aerosol container can easily discharge the contents simply by pressing the pressing part, so products in various fields, for example, Used in cosmetics, insecticides, fragrances, deodorants and the like.

Aerosol products are composed of a container body containing a stock solution and a propellant for injecting the stock solution, and a valve attached to the top of the container body.
FIG. 9 is a view for explaining a conventional aerosol product and shows the periphery of a valve.
The valve (5) shown in FIG. 9 has a housing (6) provided at the top of the container body and a stem (7) which is accommodated in the housing (6) and protrudes upward. And a stem (7) is pushed down by pressing the press part (8) attached to the stem (7). Thereby, the valve (5) is opened, and the contents sucked up from the dip tube (9) are introduced into the inflow hole (under tap hole) (61), the stem hole (71), and the internal flow path (72) of the stem (7). ) In order, it becomes a mist, a viscous liquid, or a foam, and is discharged to the outside from the discharge hole (81) of the pressing portion (8).

The housing (6) is provided with a vapor tap hole (62). The vapor tap hole (62) is a hole for introducing a propellant such as a liquefied gas in a gas phase inside the container body into the housing (6).
By providing the vapor tap hole (62), the ratio of the gas phase in the discharged contents can be increased, and the contents can be finely atomized and discharged uniformly.

On the other hand, for example, in the case of hair cosmetics, if a large amount of a set resin or oil component is blended in the stock solution, a sticky feeling due to these components tends to occur. In order to reduce the stickiness, a method of lowering the stock solution ratio can be adopted. However, when the stock solution ratio is lowered, if a vapor tap hole (62) is provided, the ratio of the gas phase in the discharged contents Becomes too much, and the scattering at the time of discharge becomes excessive.
Therefore, in the case of hair cosmetics or the like, the vapor tap hole (62) may not be provided in order to suppress scattering during discharge.

  However, when the vapor tap hole (62) is not provided, the housing (6) is filled with the propellant by filling the propellant. In order to attach the pressing portion (8) to the stem (7) in this state, when the stem (7) is pushed down, the contents enter the housing (6). In that case, a specific component contained in the sucked undiluted solution (mainly set resin in the case of hair cosmetics) precipitates and enters the inflow hole (61), which may cause clogging. is there.

When the vapor tap hole (62) is provided, the inside of the housing (6) is rarely filled with the propellant before use, and therefore the clogging of the inflow hole (61) due to the above reason is difficult to occur, but the following (a) For the reason of (c), the problem that the inflow hole (61) is clogged arises.
(A) After discharging the contents, certain components (mainly set resin in the case of hair cosmetics) in the undiluted solution remaining in the housing (6) are deposited and deposited when the contents are discharged again. The specific component thus peeled off, settles and enters the inflow hole (61), resulting in clogging.
(B) The precipitate deposited in the container over time enters the housing (6) when the contents are discharged, and the precipitate that has entered the housing (6) settles after discharging the contents. Then, clogging occurs by entering the inflow hole (61).
(C) Impurities mixed in the container during manufacture of the aerosol product enter the housing (6) when the contents are discharged, and after the discharge of the contents is finished, the impurities settle and enter the inflow hole (61). Intrusion causes clogging.

  When the clogging of the inflow hole (61) occurs, there arises a problem of ejection failure such that a certain amount cannot be ejected when the contents are ejected, the ejection amount decreases with time, or it becomes impossible to eject at all.

Conventionally, various techniques for eliminating clogging have been disclosed. As a technique for eliminating clogging, for example, disclosed techniques of Patent Documents 1 to 4 below can be cited. However, the disclosed technologies of Patent Documents 1, 2, and 3 prevent inflow of precipitates and the like into the housing at the time of discharge, and the disclosed technology of Patent Document 4 discloses the deposits and the like into the stem port at the time of discharge. It prevents inflow.
In other words, the disclosure techniques of Patent Documents 1 to 4 are for preventing clogging at the time of discharge, and the deposits and impurities already present in the housing (6) are settled after discharge or during storage. It is impossible to prevent clogging of the generated inflow hole (61).

Japanese Patent No. 3409240 Japanese Patent No. 3409241 JP 2003-81371 A JP 2003-72869 A

  The present invention has been made in view of the above-described situation, and includes an aerosol container valve that can prevent clogging of an inflow hole due to sedimentation and precipitation of impurities present in a housing, and the valve. An object of the present invention is to provide an aerosol container and an aerosol product in which the aerosol container is filled with contents.

  According to the first aspect of the present invention, there is provided a housing provided at the top of the aerosol container body and filled with the contents filled in the aerosol container body, and is provided so as to protrude from the upper part of the housing and is lifted by a biasing means. An aerosol container valve having a stem biased in a direction, wherein an opening portion of the inflow hole is located at a position higher than a lowermost portion of the bottom portion in the bottom portion of the housing. For valves.

  The invention according to claim 2 relates to the aerosol container valve according to claim 1, wherein the valve is inclined downward from the opening toward the lowermost part.

  The invention according to claim 3 relates to the valve for an aerosol container according to claim 1, wherein a raised portion is provided on the bottom portion, and the inflow hole penetrates the raised portion.

  The invention according to claim 4 relates to the valve for an aerosol container according to claim 3, wherein the raised portion has a truncated cone shape, and the inflow hole passes through a center line of the raised portion.

  The invention according to claim 5 relates to the aerosol container valve according to any one of claims 1 to 3, wherein a central axis of the inflow hole does not coincide with a central axis of the stem.

  The invention according to claim 6 relates to the aerosol container valve according to any one of claims 1 to 5, wherein a vapor tap hole is not provided in the housing.

  A seventh aspect of the present invention relates to an aerosol container comprising the aerosol container valve according to any one of the first to sixth aspects.

  The invention according to claim 8 relates to an aerosol product in which the aerosol container according to claim 7 is filled with the contents.

  According to the first aspect of the present invention, the housing provided at the top of the aerosol container body and filled with the contents filled in the aerosol container body flows from the inflow hole, and is provided so as to protrude from the upper part of the housing and biasing means. A valve for an aerosol container having a stem urged upward by an opening of the inflow hole at a position higher than a lowermost portion of the bottom at the bottom of the housing. Even if the precipitates and impurities present in the sediments settle, the precipitates and impurities (hereinafter referred to as sediments) accumulate at the bottom. Therefore, the clogging of the inflow hole due to the sediment can be prevented.

  According to the second aspect of the invention, since the sediment moves along the inclined surface by inclining downward from the opening toward the lowermost portion, the eyes of the inflow holes caused by the sediment Clogging can be prevented more reliably.

  According to the third aspect of the present invention, the raised portion is provided on the bottom portion, and the inflow hole passes through the raised portion, so that the opening portion exists at a position higher than the lowest portion. The sediment can be accumulated at the bottom. Therefore, the clogging of the inflow hole due to the sediment can be prevented.

  According to the invention which concerns on Claim 4, when the said protruding part is frustoconical shape and the said inflow hole has penetrated on the centerline of the said protruding part, it inclines below toward the lowest part from an inflow port. It will be. Therefore, the clogging of the inflow hole due to the sediment can be more reliably prevented.

  According to the fifth aspect of the present invention, since the central axis of the inflow hole does not coincide with the central axis of the stem, the opening can be positioned away from the lowermost portion, and the opening and the lowermost The height difference can be increased. As a result, the volume of the lowermost part from the opening can be increased and more sediment can be accumulated in the lowermost part, so that the clogging of the inflow hole can be prevented more reliably.

  According to the invention which concerns on Claim 6, when the vapor tap hole is not provided in the said housing, when attaching a press part to a stem, the sediment resulting from the component contained in the undiluted | stock solution suck | inhaled by the housing arises However, clogging of the inflow hole due to the sediment can also be prevented. In addition, when using hair cosmetics containing a set resin or oil component in the stock solution, the stock solution ratio may be lowered to prevent stickiness, but even in such a case, no vapor tap hole should be provided. Therefore, scattering at the time of discharge can be suppressed.

  According to the invention which concerns on Claim 7, it becomes an aerosol container which can suppress generation | occurrence | production of clogging by being an aerosol container provided with the valve | bulb for aerosol containers in any one of Claim 1 thru | or 6.

  According to the eighth aspect of the present invention, even if an aerosol product in which the contents are filled in the aerosol container according to the seventh aspect is used, even if a component such as a set resin that is easily clogged is used. The occurrence of clogging can be suppressed.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an aerosol container valve according to the present invention, an aerosol container including the valve, and an aerosol product in which the contents of the aerosol container are filled will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment at all.
FIG. 1 is a diagram showing an entire aerosol container (aerosol product) according to an embodiment of the present invention filled with contents.
Drawing 2 is a figure showing the circumference of the valve for aerosol containers concerning the embodiment of the present invention, and shows the figure at the time of nonuse (when not discharging).
Drawing 3 is a figure showing the circumference of the valve for aerosol containers concerning the embodiment of the present invention, and shows the figure at the time of use (at the time of discharge).
FIG. 4 is an explanatory view for explaining an inflow hole (undertap hole) of the aerosol container valve according to the embodiment of the present invention, and shows the shape of the housing. Moreover, FIG.4 (b) is an enlarged view which shows the part of (X) of (a). In FIG. 4, the stem and the like are omitted for convenience of explanation.
In addition, the vertical direction in the specification refers to the vertical direction in FIGS.

As shown in FIG. 1, the aerosol container according to the present embodiment includes a container body (A) and a discharge device (B).
In the container main body (A), the stock solution (C) and the propellant (D) are accommodated. In the present specification, the stock solution (C) and the propellant (D) are collectively referred to as contents. FIG. 1 shows an example in which the stock solution (C) and the propellant (D) are accommodated in the container. However, a part of the propellant (D) is dissolved in the stock solution (C) and completely complied with it. In some cases, it is dissolved and uniform, and in other cases, the propellant (D) does not dissolve in the stock solution (C) and both are separated non-uniformly.
The propellant (D) is for injecting the stock solution (C), and is composed of compressed gas such as air and nitrogen and liquefied gas such as dimethyl ether (DME) and liquefied petroleum gas (LPG). A mixture etc. can be mentioned.

As shown in FIGS. 2 and 3, the discharge device (B) is composed of a pressing portion (1), an aerosol container valve (2) (hereinafter sometimes simply referred to as a valve (2)), and the like. ) Includes a mountain cup (4), a housing (21), a dip tube (3), and the like.
Specifically, the housing (21) of the valve (2) is fitted to the boss (41) of the mountain cup (4) provided at the top of the container body (A), and the upper end of the valve (2) A pressing part (1) is mounted on the. A dip tube (3) extends downward from the lower end of the valve (2), and the lower part of the dip tube (3) is immersed in the stock solution (C) of the container body (A).

The valve (2) includes a housing (21) provided at the top of the aerosol container body, and a stem (22) protruding from the upper part of the housing (21) and urged upward by the urging means (23). ). The internal space of the housing (21) includes an upper space (2121) into which the stem base end (22a) is inserted and a lower space (2122) communicating with the internal space of the dip tube (3). The upper space (2121) and the lower space (2122) communicate with each other through the inflow hole (211). Further, the upper space (2121) has a large diameter portion (2121a) on the upper side and a small diameter portion (2121b) on the lower side, and the inflow hole (211) has a bottom portion (216) (that is, a housing ( 21) at the bottom (216)). The stock solution (C) sucked up from the dip tube (3) is sucked into the housing (21) through the inflow hole (211) together with the propellant (D) dissolved in the stock solution (C). It is configured.
A coil spring or the like can be used as the urging means (23).

The valve (2) will be described in more detail by explaining the discharge operation of the contents in the aerosol container (mainly see FIGS. 2 and 3).
When not in use (when not discharging), the stem (22) is urged upward by the urging means (23) (see FIG. 2). Thus, the lower portion of the stem (22) and the upper portion of the housing (21) are in close contact with each other via the gasket (24), that is, the valve (2) is closed.
When discharging the contents, the valve (2) is opened by lowering the stem (22) against the upward biasing force of the biasing means (23) (see FIG. 3). Specifically, the stem (22) is pushed down by pressing the pressing portion (1) provided on the stem (22). When the stem (22) is pushed down, the gasket (24) is bent downward and the stem hole (221) is opened. And the interface of the stock solution (C) filled in the container body (A) is pushed downward by the propellant (D), and the contents (the propellant dissolved in the stock solution (C) and the stock solution (C) (D)) is sucked up from the dip tube (3). The contents sucked up from the dip tube (3) are the inside of the lower space (2122), the inflow hole (211), the small diameter part (2121b), the large diameter part (2121a), the stem hole (221), and the stem (22). It passes through the flow path (222) in order and is discharged from the discharge hole (11) of the pressing part (1).

Here, in the bottom part (216) in the housing (21), the opening part (211a) of the inflow hole (211) is higher than the lowermost part (213) as shown in FIG. 4 (particularly FIG. 4 (b)). In position.
Specifically, a frustoconical ridge (214) is provided on the bottom (216) of the housing (21), and the inflow hole (211) passes through the center line of the ridge (214). . Thereby, the opening part (211a) is made higher than the lowest part (213). Moreover, in the bottom part (216), the place where the raised part (214) does not exist becomes the lowest part (213). By having the raised portion (214), the position of the opening (211a) is higher than the lowermost portion (213).

Since the opening (211a) is located at a position higher than the lowermost part (213), even if precipitates and impurities in the housing (21) have settled, the sediments and impurities (sediment) that have settled are shown in FIG. b) Sedimentation as indicated by the arrow and accumulation at the bottom (213). Therefore, it is possible to prevent sediment from entering the inflow hole (211) from the opening (211a) and causing clogging.
In the present embodiment, the bottom (216) is inclined downward from the opening (211a) toward the lowermost part (213). Thereby, since a sediment moves toward the lowest part (213) along an inclined surface, the penetration | invasion to the inflow hole (211) of a sediment can be suppressed more reliably.

Moreover, in this embodiment, the vapor tap hole is not provided in the housing (21).
In the case where no vapor tap hole is provided, since the vapor phase does not flow from the vapor tap hole, the ratio of the vapor phase does not increase excessively, and an increase in the scattering of discharge can be suppressed.
When the vapor tap hole is not provided, the housing (21) is easily filled with the propellant (D) (particularly liquefied gas). Therefore, when attaching the pressing part (1) to the stem (22), the stem (22) is pushed down, and the contents are sucked into the housing (21). As a result, specific components contained in the undiluted solution (C) in the sucked contents are precipitated, condensed and settled.
However, in this embodiment, since the opening (211a) is located higher than the lowermost part (213), the sediment is accumulated not in the opening (211a) but in the lowermost part (213). Thereby, clogging of the inflow hole (211) by sediment can be prevented.

In addition, the valve | bulb which provided the vapor tap hole in the housing (21) is also contained in this invention. By providing the vapor tap holes, the ratio of the gas phase can be increased in the contents to be discharged, and the contents can be finely atomized and discharged uniformly.
Even when a vapor tap hole is provided in the housing (21), sediments are generated in the housing due to the reasons (a) to (c) described in the “Technical field”. Even in that case, since the sediment is accumulated in the lowermost part (213) because the opening (211a) is higher than the lowermost part (213), the clogging of the inflow hole (211) due to the sediment is blocked. Can be prevented.

  In the above embodiment, the opening (211a) is positioned higher than the lowermost part (213) by providing the frustoconical ridge (214). However, the present invention is not limited to the above embodiment. Any valve in which the opening (211a) is higher than the lowermost part (213) at the bottom (216) of (21) is included in the present invention.

  5-8 is a figure which shows other embodiment of valve | bulb (2), and has shown the shape of the housing similarly to Fig.4 (a). In FIG. 7, (b) shows a cross-sectional view taken along line YY of (a). In FIG. 8, (b) shows a schematic three-dimensional view of the housing (21). Moreover, the same code | symbol is attached | subjected to the same structure in FIGS.

In the embodiment shown in FIGS. 1 to 4, a small diameter portion (2121b) is provided in the upper space (2121) of the housing (21), and an opening (211a) and a raised portion (214) are provided in the small diameter portion (2121b). However, it is good also as a structure which does not provide a small diameter part (2121b) in upper space (2121) like FIG.
Moreover, as shown in FIG. 6, you may make the protruding part (214) which the inflow hole (211) penetrated into a column shape or a rectangular parallelepiped shape.
In the embodiment shown in FIGS. 1 to 4, the raised portion (214) has a truncated cone shape. However, as shown in FIG. 7 (a), the raised portion (214) has a rectangular shape at the bottom (213). You may comprise from the some protruding board (2141) which is the trapezoid shape (the trapezoid shape which has the surface which inclined below toward the lowest part (213)) which cut off the side. In this case, as shown in FIG. 7 (b), the raised plate (2141) is radially arranged to form the upper end portion of the inflow hole (211), and the position of the opening (211a) is set to the lowermost portion (213). Higher. By arranging the raised plates (2141) in a radial pattern, sediment is accumulated between the raised plates (2141), so that the clogging of the inflow holes (211) can be more reliably prevented.
The shape of the raised plate is not limited to a trapezoidal shape, and may be a square shape or the like.

  1 to 4, the center axis of the inflow hole (211) is provided on the same line as the center line of the housing (21), that is, on the same line as the center axis of the stem (22). As shown, the inflow hole (211) may be provided at a position where the central axis does not coincide with the central axis of the stem (22). In FIG. 8, the inflow hole (211) is provided so that the opening (211a) is located in the vicinity of the inner peripheral wall of the housing (21), and the lowermost part (213) is placed across the center of the bottom (216) ( 211a). Then, the bottom part (216) is inclined from the opening part (211a) toward the lowermost part (213), and the shape of the part from the opening part (211a) to the lowermost part (213) (shaded part in FIG. 8B) The shape is a truncated cone. Thereby, an opening part (211a) can be made into the position away from the lowest part (213). Further, the difference in height between the opening (211a) and the lowermost part (213) can be increased. As a result, the volume from the opening (211a) to the lowermost part (213) (the hatched part in FIG. 8 (b)) increases, and more sediment can accumulate in the lowermost part (213). Therefore, clogging of the inflow hole (211) can be prevented more reliably.

Further, the present invention includes not only the above-mentioned aerosol container valve (2) but also an aerosol container constituted by attaching the aerosol container valve (2) to the container body (A).
Further, an aerosol product in which the container body (A) of the aerosol container according to the present invention is filled with contents composed of a stock solution (C) and a filler (D) such as cosmetics, pharmaceuticals, quasi-drugs, and fragrances. It is included in the present invention.
The form of the contents discharged from the specific aerosol product is not particularly limited as long as it is discharged in the form of a mist, a foam, or a viscous liquid. Aerosol products include, for example, hair cosmetics such as hair styling agents, hair dyes and hair restorers; skin cosmetics such as skin care agents, shaving agents, deodorant agents, and fragrance agents; pharmaceuticals such as analgesic anti-inflammatory agents and insecticides Quasi-drugs such as bactericides and disinfectants can be exemplified. In particular, the stock solution (C) containing a component that is likely to be clogged such as a set resin is suitable for filling the aerosol container according to the present invention.

Hereinafter, the effect of the present invention will be made clearer by showing examples of the present invention.
(Clogging test)
The aerosol container according to the present invention having no vapor tap hole (see FIGS. 1 to 4) and the conventional aerosol container without the vapor tap hole (see FIG. 9, provided that the vapor tap hole is provided in FIG. In this example, no vapor tap hole was provided) and the contents were filled to produce an aerosol product.
As the contents, a mixture of the stock solution shown in Formulation Examples 1 to 6 in Table 1 and liquefied petroleum gas as a propellant at 6: 4 was used.
And after leaving the produced aerosol product to stand for one week, the discharge state when the contents were discharged was evaluated according to the following evaluation criteria, and shown in Table 1.
(Evaluation criteria)
○: No abnormality is found in the discharge state ×: The discharge amount is small or not discharged at all (clogging occurs)

  As shown in Table 1, the conventional aerosol products were confirmed to be clogged in all the formulation examples, whereas the aerosol products of the present invention showed no abnormality in the discharge state in all the formulation examples. In other words, it can be seen that the aerosol product of the present invention is prevented from clogging the contents.

  INDUSTRIAL APPLICATION This invention can be utilized suitably for the aerosol product of the form which connects a valve | bulb and discharges the contents in the form of a mist, foam, or a viscous liquid.

It is a figure which shows the whole aerosol container (aerosol product) which concerns on embodiment of this invention with which the content was filled. It is a figure which shows the periphery of the valve | bulb for aerosol containers which concerns on embodiment of this invention, and shows a non-use figure. It is a figure which shows the periphery of the valve | bulb for aerosol containers which concerns on embodiment of this invention, and shows the figure at the time of discharge. It is explanatory drawing for demonstrating the inflow hole of the valve | bulb for aerosol containers which concerns on embodiment of this invention. It is a figure which shows other embodiment of the valve | bulb of this invention. It is a figure which shows other embodiment of the valve | bulb of this invention. It is a figure which shows other embodiment of the valve | bulb of this invention. It is a figure which shows other embodiment of the valve | bulb of this invention. It is explanatory drawing for demonstrating the conventional aerosol product.

Explanation of symbols

2 Valve for aerosol container 21 Housing 211 Inflow hole 211a Opening 213 Lowermost part 214 Raised part 216 Bottom part 23 Energizing means 22 Stem A Container body

Claims (8)

A housing provided at the top of the aerosol container main body and filled with the contents filled in the aerosol container main body, and a stem that protrudes from the upper portion of the housing and is urged upward by the urging means. An aerosol container valve comprising:
The valve for an aerosol container, wherein an opening portion of the inflow hole is located at a position higher than a lowermost portion of the bottom portion at a bottom portion in the housing.   The aerosol container valve according to claim 1, wherein the valve is inclined downward from the opening toward the lowermost part. A raised portion is provided on the bottom,
The aerosol container valve according to claim 1, wherein the inflow hole passes through the raised portion.   The valve for an aerosol container according to claim 3, wherein the raised portion has a truncated cone shape, and the inflow hole passes through a center line of the raised portion.   The aerosol container valve according to any one of claims 1 to 3, wherein a central axis of the inflow hole does not coincide with a central axis of the stem.   The aerosol container valve according to any one of claims 1 to 5, wherein a vapor tap hole is not provided in the housing.   An aerosol container comprising the aerosol container valve according to claim 1.   An aerosol product in which the contents are filled in the aerosol container according to claim 7.

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