JP5960223B2 - Aerosol product and injection member used therefor - Google Patents

Description

  The present invention relates to an aerosol product and an injection member used therefor. In particular, the present invention relates to an aerosol product having high airtightness until the start of use and an injection member used therefor.

  The aerosol product is composed of an aerosol container having an aerosol valve fixed to the container body, and an aerosol composition containing a stock solution filled in the aerosol container and a propellant for injecting the stock solution. The aerosol container is excellent in air tightness, but if the aerosol product is stored, the propellant gradually leaks over time, and when the amount of leakage increases, the spraying state changes and the concentration of the active ingredient is high. The problem of becoming. In particular, in the case of an aerosol product filled with an aerosol composition containing a large amount of a propellant, the amount of leakage increases and the concentration of the active ingredient tends to change, making it unusable for pharmaceuticals and quasi drugs.

  Patent Document 1 discloses an aerosol product in which a stem is provided in an injection member without providing a stem in an aerosol valve. In addition, in this aerosol product, a film having excellent contents and air blocking properties is attached to the opening of the valve. And it uses by peeling a film and mounting | wearing an injection member. Therefore, it is sealed with a double structure consisting of a valve and a film until initial use, thereby preventing changes in the injection state due to permeation of the propellant.

  Patent Document 2 discloses an aerosol product that includes a container body and a lid material, and injects the entire amount of the aerosol composition in the container body by breaking the lid material. This lid material is composed of a mounting cup formed integrally with a metal such as aluminum and is suitable for long-term storage.

  Patent Document 3 discloses an aerosol product in which a gas-impermeable film is provided on the lower surface of the stem rubber, and Patent Document 4 discloses an aerosol product in which a gas-impermeable film is provided on both sides of the stem rubber. It is disclosed. Thereby, permeation of the propellant of the aerosol composition from the stem rubber is prevented.

JP-A-9-118379 Japanese Patent Publication No. 1-27789 Japanese Utility Model Publication No. 6-32850 JP 2000-128261 A

However, in Patent Document 1, the film is simply pasted to the opening of the container with an adhesive or the like, and the high pressure content is insufficient to prevent the propellant from permeating. In addition, it is conceivable that the adhesive is not sufficiently applied, or that an unexpected external force is applied due to transportation or the like, so that the sticking becomes sweet.
Although patent document 2 can prevent permeation | transmission of the content, the manufacture is difficult and it is not practical. In addition, if the lid member has a hardness that changes depending on the pressure of the aerosol composition, the lid member may break at the cutting blade portion when not in use. On the other hand, if the lid is made hard enough not to be deformed by the aerosol composition pressure, it is difficult to break.
Patent Documents 3 and 4 prevent the transmission of the stem rubber, but cannot insert the propellant from the stem because the stem is inserted in the stem rubber.

  It is an object of the present invention to provide a stable aerosol product that is easy to manufacture, has high air tightness, has little leakage of propellant, and has no increase in oxygen and moisture concentration due to permeation from the outside, and an injection member used therefor. It is aimed.

The aerosol product of the present invention comprises a container body having pressure resistance and an aerosol container provided with a lid for closing the opening, and an aerosol composition filled in the aerosol container, and the lid has an upper end. a stem rubber you have a center hole that is blocked by the upper surface, the upper surface of the stem rubber, a gas impermeable closure film which is fixed so as to cover the entire upper surface, a stem rubber so as to cover the stem rubber And a cover for adhering the closing membrane to the opening of the container body, the opening hole is formed at a position overlapping the central hole of the cover, and the portion covering the central hole of the closing membrane is made of the aerosol composition. It is characterized by the excitement under pressure.

  In such an aerosol product, it is preferable that the stem rubber is fixed between a cover and a stem rubber holding portion formed at the upper end of the container body. The lid portion further includes a housing having a stem rubber holding portion formed at an upper end, and the stem rubber is fixed between the stem rubber holding portion of the housing inserted into the container body and the cover. Are preferred.

  The aerosol composition of the aerosol product of the present invention is preferably composed of a stock solution and a liquefied gas, and the liquefied gas is 30% by weight or more. Moreover, as an aerosol composition, what consists of a undiluted | stock solution and compressed gas and an internal pressure becomes 0.4-0.8 Mpa is preferable.

The injection member of the present invention is an injection member for opening the closing film of the aerosol product of the present invention and injecting the aerosol composition, the main body having an injection hole, and extending downward from the center of the main body, with the closing film at the lower end It is characterized by comprising a stem having a breakage portion for opening the opening, and the injection hole and the breakage portion communicate with each other through a passage.
A such ejector member, the center hole of the stem rubber is circular, the stem is cylindrical, a breaking portion for the outer surface of the bottom of the stem exhibits a concave, further said passage to an outer surface of the bottom of the stem The thing in which the communicating hole connected with was formed is preferable. In particular, it is preferable that the outer surface of the bottom surface of the stem is a rupture portion exhibiting a V shape or a rupture portion exhibiting a U shape. Furthermore, a stem hole may be formed in the lower side surface of the stem. And it is preferable that the injection member of this invention can be engaged with a container main body or a cover part, and is provided with the engaging part for maintaining an aerosol product in an open state.

  The injection member according to the present invention is preferably configured such that the stem is movable between an opened state in which the stem breaks the closing membrane and a sealed state in which the stem is separated from the closing membrane. Moreover, what was provided with the guide part which guides the movement of the stem to an up-down direction is preferable.

The spray member having a stem that can move between the opened state and the sealed state as described above, and includes a cover member that is attached to the aerosol container and a push button that is inserted into the cover member so as to be movable up and down. Preferably, the cover member includes a cylindrical guide portion, the push button includes a cylindrical portion that moves up and down in the guide portion, and a stem is provided in the cylindrical portion.
Further, in such an injection member, the guide portion includes a convex portion that protrudes inward, the cylindrical portion includes an engaging portion that protrudes outward, and the push button moves to form a cylinder. It is preferable that the encapsulated engaging part goes over the convex part to change from the sealed state to the opened state.

The aerosol product of the present invention comprises an aerosol container having a container body having pressure resistance and a lid portion that closes the opening thereof, and an aerosol composition filled in the aerosol container, and the lid portion has an upper end. stem but a stem rubber you have a center hole that is blocked by the upper surface, the upper surface of the stem rubber, as a fixed gas impermeable closure film so as to cover the entire top surface, covering the stem rubber And a cover for fixing the rubber and the closure membrane to the opening of the container body, and the opening hole is formed at a position overlapping the central hole of the cover, so that the propellant is a stem rubber as long as the closure membrane is not broken. It does not open to the outside through. In addition, entry of oxygen, moisture, and the like from the outside can be prevented, and unstable contents such as vitamins can be stably maintained for a long period of time. Moreover, since the structure is simple, it is easy to manufacture. Furthermore, since the closing membrane is provided on the upper surface and the portion that closes the central hole of the closing membrane is raised by the pressure of the aerosol composition, the broken portion is easy to understand. Furthermore, since the stem rubber which received the pressure of the aerosol composition becomes a foundation, it is easy to break. Since the upper end of the center hole of the stem rubber is closed by the upper surface, and the closing membrane is fixed to the entire upper surface, the upper surface is easy to be in close contact with the outer surface of the stem when the closing membrane is broken. It is easy to seal between the center hole of the stem rubber. In addition, the aerosol composition can be prevented from entering the adhesive portion between the stem rubber and the closure membrane from the central hole of the stem rubber, and the aerosol composition is less likely to enter between the stem rubber and the closure membrane. The sealing film is prevented from peeling off due to the dissolution of the adhesive, and a stable sealing property is obtained.

  In such an aerosol product, the stem rubber is fixed between a stem rubber holding portion formed at the upper end of the container body and the cover, or the lid portion is formed at the upper end. A housing having a rubber holding portion, and when the stem rubber is fixed between the stem rubber holding portion of the housing inserted into the container body and the cover, an apparatus similar to a conventional aerosol product is provided. Can be used.

  When the aerosol composition is composed of a stock solution and a liquefied gas and the liquefied gas is 30% by weight or more, and when the aerosol composition is composed of a stock solution and a compressed gas and the internal pressure is 0.4 to 0.8 MPa. In the conventional aerosol products, the deterioration of the aerosol composition due to the leakage of the propellant has deteriorated the product function. However, the aerosol product of the present invention has a remarkable effect of preventing leakage of the propellant.

An injection member according to the present invention includes a main body having an injection hole and a stem that extends downward from the center of the main body and has a break portion for opening a closing film at a lower end. The injection hole and the break portion communicate with each other. Therefore, the aerosol product can be easily used by breaking the sealing film of the aerosol product with the stem. In this injection member, the center hole of the stem rubber is circular, the stem is cylindrical, the outer surface of the bottom of the stem is a broken portion that is recessed at the center , and the outer surface of the bottom of the stem When the communication hole communicating with the passage is formed at the center of the sealing film, the closing membrane is easily and accurately broken without gaps, and the leakage between the central hole of the stem rubber and the stem is suppressed as much as possible. In addition, the fragments of the closure membrane broken by the fracture portion stick to the outer surface of the bottom surface due to the pressure of the aerosol composition, and the fragments of the closure membrane do not obstruct the injection. In addition, even if the fragments are held at the fracture portion, the aerosol composition cannot be sealed enough to seal the pressure of the product, so that the possibility that the aerosol composition is completely clogged is small. In particular, when the outer surface of the bottom surface of the stem is V-shaped or U-shaped, the closure membrane is continuously connected to the V-shaped acute angle portion or U-shaped recess portion of the fracture portion while the closure membrane is plastically deformed. It is easy to be held so as not to seal the passage.

Further, when a stem hole is formed on the lower side surface of the stem, a predetermined injection amount per unit time can be ensured even if a fragment of the closing film blocks the communication hole of the fracture portion.
Furthermore, when the injection member has an engaging part for engaging the container body or the lid and maintaining the aerosol product in an open state, the aerosol product is opened by extending the operation of opening the closing membrane. Therefore, it can be suitably used as a full-injection aerosol product that injects the entire amount of the aerosol composition at one time.

  When the stem is configured to be movable between an opened state in which the closure membrane is broken and a sealed state in which the stem is separated from the closure membrane, the injection member may be circulated in a state attached to the aerosol product. it can.

When the guide portion for guiding the movement of the stem in the vertical direction is provided, the stem can be moved perpendicularly to the closing membrane, and the closing membrane can be broken accurately. By accurately breaking, the sealing property between the stem and the stem rubber can be maintained even after the aerosol product is opened.
A cover member mounted to the aerosol products, consists of a push button which is interpolated to be movable up and down on the cover member, the cover member includes a cylindrical guide portion, wherein the push button, the guide portion Manufacture is easy when the cylinder part which moves up and down is provided and the stem is provided in the cylinder part.

  In the injection member according to the present invention, the guide portion includes a convex portion that protrudes inward, the cylindrical portion includes an engaging portion that protrudes outward, and the push button moves to form a cylindrical engagement member. When the joint part goes over the convex part, the opened state and the sealed state can be maintained when the sealed state is changed to the opened state.

It is side surface sectional drawing which shows the form of the aerosol product outside the scope of the present invention. 2a and 2b are a side sectional view and a perspective view, respectively, of the stem rubber of the aerosol product of FIG. 1, and FIG. 2c is a side sectional view showing an embodiment of the stem rubber used in the aerosol product of the present invention. 3a and 3b are side views in which the spray member of the present invention that can be used in the aerosol product of the present invention is attached to the aerosol product of FIG. 4a is a partially enlarged side sectional view of FIG. 1, and FIG. 4b is a partially enlarged side sectional view of FIG. 3a. 1 is a side cross-sectional view showing an embodiment of an aerosol product outside the scope of the present invention. FIG. Fig. 6a is a side sectional view showing an embodiment of the aerosol product of the present invention, Fig. 6b is a side sectional view showing a lid portion thereof, and Fig. 6c is a side sectional view showing an injection member thereof. FIG. 7 is a side sectional view showing the form of an aerosol product outside the scope of the present invention. Fig. 8a is a side sectional view showing the form of an aerosol product outside the scope of the present invention, and Fig. 8b is a side sectional view showing the opened state. 9a, b, c are side cross-sectional views, top views, and front views of the injection member of the present invention that can be used in the aerosol product of the present invention, which is the injection member of FIG. 8a. 10a, b, and c are side cross-sectional views of the cover member of the spray member of the present invention that can be used in the aerosol product of the present invention, which is the spray member of FIG. 8a. 11a is a side sectional view of a push button of the injection member of the present invention that can be used in the aerosol product of the present invention, and FIG. 11b is a side sectional view of the operation member. 11c and 11d are a side sectional view and a top view of the stopper member. Fig. 12a is a side sectional view showing the form of an aerosol product outside the scope of the present invention, and Fig. 12b is a side sectional view showing the opened state. Fig. 13a is a side sectional view showing the form of an aerosol product outside the scope of the present invention, and Fig. 13b is a side sectional view showing the opened state. 14a to 14e are side views showing still other embodiments of the stem of the injection member of the present invention. Figures 15a to 15c are top and side views of the stem rubber and closure membrane broken according to Figures 14a to 14e.

The aerosol product and the injection member of the present invention will be described with reference to the drawings.
The aerosol product 10 in FIG. 1 includes a container body 11 having pressure resistance, a lid part 12 that closes the opening, and an aerosol composition A that is filled in the container body. 23 is configured to be breakable by a needle or the like.
In addition, the aerosol product of this invention is provided with the stem rubber 21 of FIG. 2c.

  The container body 11 includes a cylindrical body portion 13, a bottom portion 14 that closes the lower end thereof, a step portion 15 that is formed at the upper end of the body portion and expands outwardly, and a mouth portion 16 that is formed at the upper end of the step portion. It consists of. The upper part of this mouth part 16 becomes an opening part of a container main body. The mouth portion 16 is formed with a stem rubber holding portion 17 for holding a stem rubber described later. The stem rubber holding portion 17 includes a step portion 17a formed on the inner surface of the mouth portion 16, and a protruding portion 17b protruding upward from the bottom surface of the step portion. Although this container main body 11 is shape | molded by a synthetic resin, considering the permeation | transmission of an aerosol composition, it is made to become thickness 0.3-7 mm, especially 0.5-5 mm. However, other materials having gas impermeability and pressure resistance such as metals such as aluminum and tin and pressure-resistant glass may be used.

  The lid portion 12 includes a stem rubber 21 engaged with the upper end of the container body, a cover 22 for fixing the stem rubber to the container body 11, and a closing film 23 provided on the upper surface of the stem rubber 21. .

  As shown in FIGS. 2A and 2B, the stem rubber 21 has a ring-shaped center hole 21 a and seals between the cover 22 and the container body 11. Or you may provide the thin film of the same magnitude | size as the center hole 21a in the center of the upper surface. In the aerosol product of the present invention, the upper end of the center hole 21a is closed by the upper surface 21c, as in the stem rubber 21b of FIG. 2c. The stem rubber 21 is formed of synthetic rubber such as acrylonitrile rubber, nitrile rubber, butyl rubber, or fluorine rubber, or an elastomer.

  The cover 22 includes a side wall 26 and an upper surface 27 that closes the upper end thereof, and an opening hole 28 is formed at the center of the upper surface 27. The opening hole 28 and the center hole 21a of the stem rubber are arranged coaxially. In this embodiment, the opening hole 28 protrudes upward, so that it becomes easy to insert an injection member, which will be described later, straight down, and to easily break the closing membrane. The opening hole may not protrude. The cover 22 is formed from a metal plate such as aluminum. Note that a synthetic resin such as polypropylene may be laminated on the inner surface of the upper surface 27 in order to increase airtightness with a closing film described later.

  The closing film 23 closes the center hole 21a of the stem rubber, and is fixed to the entire upper surface of the stem rubber with an adhesive or the like. Since the closing film 23 is provided on the entire upper surface of the stem rubber, it is held between the cover upper surface 27 and the stem rubber holding portion 17 and is not peeled off from the stem rubber 21. As the closing film 23, a ductile metal foil such as aluminum is used. The closing film 23 also functions to seal the gas that has passed through the stem rubber 21. Note that the closing film 23 may be provided on the lower surface of the stem rubber as indicated by an imaginary line, or may be provided on both. When the closing film 23 is provided on the upper surface of the stem rubber, a synthetic resin such as polypropylene may be laminated on the upper surface of the closing film in order to increase the airtightness with the inner surface of the cover upper surface.

The aerosol composition A is composed of a stock solution and a propellant, and sprays the stock solution in the form of a mist, foams, creams, or droplets. The aerosol product of the present invention can reduce the amount of leakage even if liquefied gas is used as a propellant or blended as much as a fumigant, so that the liquefied gas is 30 to 95% by weight. Further, it is stable even with respect to an aerosol composition containing preferably 40 to 90%, particularly preferably 50 to 85% by weight. Further, a compressed gas or a mixed gas of compressed gas and liquefied gas is used as a propellant, and the internal pressure thereof is 0.4 to 0.8 MPa, preferably 0.5 to 0.75 MPa, particularly preferably 0.6 to 0. Even at 7 MPa, the amount of leakage is very small and stable.

Examples of such a liquefied gas include dimethyl ether, liquefied petroleum gas, and a mixture thereof, and dimethyl ether or a liquefied gas containing dimethyl ether is particularly preferable. Examples of the compressed gas include nitrogen gas, carbon dioxide gas, and compressed air.
Examples of the stock solution include a stock solution for spraying mainly containing alcohol or a hydrocarbon solvent, a stock solution for foaming containing water as a main component, and a stock solution for gel, and a stock solution for spraying is particularly preferable.

  Such an aerosol product 10 is manufactured as follows. The container body 11 is filled with the stock solution, and then the liquefied gas is filled with an undercup or cooled. Next, the stem rubber 21 provided with the closing film 23 is placed on the stem rubber holding portion 17 and the cover 22 is covered. The stem rubber 21 and the cover 22 can be handled as a unit in advance. Then, while pressing the cover 22, the lower end of the side wall 26 is caulked to the upper end of the step portion 15 or the trunk portion 13 of the container body 11. Moreover, when using compressed gas as a propellant, it can be filled by the above-mentioned under cup filling.

This aerosol product 10 can be used, for example, using the injection members 30a and 30b shown in FIGS.
The injection member 30a of FIG. 3a includes a main body 31 having an injection hole, an attaching / detaching portion 32 extending downward from the periphery of the main body, and a stem 33 having a stem hole extending downward from the center of the main body.

The main body 31 has a columnar shape, and includes an injection hole 36 formed on a side surface, and a main body passage 37 that connects the later-described stem passage and the injection hole 36.
The detachable portion 32 includes a cylindrical side wall 38 and an engaging portion 39 that protrudes inward and is formed at the lower end of the side wall.

  As shown in FIG. 4 b, the stem 33 includes a cylindrical connecting portion 41 that extends downward from the center of the main body and a cylindrical stem main body 42 that has a diameter smaller than that of the connecting portion 41. The stem main body 42 has a bottom portion 43 at the lower end, and has a stem hole 44 on a side surface slightly above the bottom portion 43. The shape of the connecting portion 41 is configured to be larger than the opening hole 28 of the cover 22. The bottom part 43 is a broken part in the present invention, and has a dish shape with a recessed center. Further, the cylindrical connecting portion 41 and the central hole of the stem body 42 constitute an in-stem passage 45 communicating with the in-body passage 37. Therefore, the injection hole 36 and the stem hole 44 communicate with each other through the main body passage 37 and the stem passage 45. Further, the bottom portion 43 of the stem is formed with a communication hole 43 a communicating with the stem passage 45.

  Returning to FIG. 3 a, the method of attaching the injection member 30 a to the aerosol product 10 is to insert the stem 33 of the injection member 30 a from the opening hole 28 of the cover 22 and use the engagement member 32 of the injection member 30 a. It pushes in so that the joint part 39 may engage with the lower step part 15a of the side wall of the cover. Here, since the connecting portion 41 of the stem has a shape that cannot be inserted into the opening hole 28 of the cover 22, the connecting portion 41 and the opening hole 28 come into contact with each other, and the injection member 30 a is not pushed too much (see FIG. 4b). As a result, the stem 44 breaks the closing membrane 23, the aerosol product 10 is opened, and the aerosol composition A is discharged from the injection hole 36 of the injection member 30a.

  Before using the aerosol product, as shown in FIG. 4a, the aerosol composition 10 is filled with the aerosol composition A, and the internal pressure is higher than the atmospheric pressure. The central portion 23a of the closing membrane 23 located at 21a has a mountain shape so as to protrude upward under internal pressure. On the other hand, as shown in FIG. 4b, the bottom of the stem 33 has a concave shape. Therefore, the shape of the central portion 23a of the closing membrane 23 matches the shape of the bottom portion 43 of the stem 33, and the central portion 23a of the closing membrane 23 can be reliably broken into a circle without a gap. Therefore, the aerosol composition A does not leak from the cover opening hole 28 without leaking from the portion where the stem 33 is inserted into the center hole 21a of the stem rubber.

  Further, when the closing film 23 is broken, a pressure difference is generated between the in-stem passage 45 and the inside of the container body, and the aerosol composition A moves in the direction of the stem hole 44 and the communication hole 43a. Thereby, the central part 23a of the torn closure membrane is firmly held on the bottom 43 of the stem 23 without falling into the container body due to a pressure difference between the passage 45 in the stem and the inside of the container body. Thereby, the central part 23a of the torn closure membrane is prevented from floating and blocking the stem hole 44 and the like. Therefore, the discharge of the aerosol composition is not disturbed.

  In the injection member 30b of FIG. 3b, the main body 46 has an elongated cylindrical body, the injection hole 47 faces upward, the connecting portion is removed, and the stem is shortened because it is used upside down. . The other structure is substantially the same as the injection member 30a of FIG. 3a. And it can be made to discharge by the usage method similar to the injection member 30a of FIG. 3a except using an aerosol product in an inverted state. In the aerosol product of the present invention, since the closing membrane is inside the opening hole of the cover, when the diameter of the opening hole 28 is as small as 3 to 7 mm, the cap covering the opening hole 28 can be omitted.

  In the aerosol product 50 of FIG. 5, the lid portion 12 a has a housing 52 inserted into the mouth of the container body 51, a stem rubber 21 disposed at the upper end of the housing, and a closure provided on the upper surface of the stem rubber. The membrane 23 includes a housing 52 and a cover 22 for fixing the stem rubber 21 to the container body 51. The stem rubber 21 and the closing membrane 23 are substantially the same as in FIG. 2a or 2b. Further, the cover 22 is substantially the same as FIG.

  The container main body 51 includes a cylindrical body portion 53, a bottom portion 54 that closes the lower end thereof, a neck portion 55 that is formed at the upper end of the body portion and has a reduced diameter, and an enlarged mouth portion 56 that is formed at the upper end of the neck portion. Consists of. A first step portion 55a and a second step portion 55b are formed between the trunk portion 53 and the neck portion 55 and between the neck portion 55 and the mouth portion 56, respectively. The container body 51 is formed of a metal such as aluminum or tinplate. However, other materials having pressure resistance such as synthetic resin and pressure-resistant glass may be used.

  The housing 52 includes a cylindrical base 57 and a cylindrical dip tube engaging portion 58 formed at the center of the lower end of the base and having a reduced diameter. The base 57 and the center of the dip tube engaging portion 58 communicate with each other. ing. At the upper end of the base portion 57, a stem rubber holding portion 59 is formed which includes a step portion 59a and a protruding portion 59b protruding upward on the bottom surface of the step portion. Further, a first engagement step portion 60 that engages with the mouth portion 56 of the container main body is formed on the upper side surface of the base portion, and a first step of the container main body is provided on the lower side surface of the base portion via a seal material 61. A second engagement step portion 62 that engages with the portion 55a is formed.

In order to manufacture the aerosol product 50, the container body 51 is filled with the stock solution, and the liquefied gas is filled with the undercup or cooled. Next, a cover part integrally assembled with the housing 52, the stem rubber 21 provided with the closing film 23, and the cover 22 is inserted into the container main body 51, and the lower end of the cover is pressed against the container main body 11 while pressing the cover part. The second step portion 55b or the neck portion 55 is crimped. Moreover, when using compressed gas as a propellant, it can be filled by the above-mentioned under cup filling.
Such an aerosol product 50 uses the injection members 30a and 30b shown in FIGS. 3a and 3b as in the aerosol product 10 shown in FIG.

  The aerosol product 70 of FIG. 6 includes a container main body 71 and a lid member 72 having a mounting cup.

  The container main body 71 includes a cylindrical body 73, a bottom 74 that closes the lower end thereof, a shoulder 75 that is formed at the upper end of the body and is reduced in diameter while being curved outward, and a bead formed at the upper end of the shoulder. 76. The container main body 71 is formed by forming a body 73 and a shoulder by drawing or impacting a metal plate such as aluminum or tin, and curling the upper end of the shoulder to form a bead 76. The bottom is attached to the lower end of the base by double winding or the like. The bottom 74 is formed in a mountain shape that rises in a tapered shape toward the center. Thereby, the pressure resistance of the container with respect to the internal pressure is increased and is not easily deformed. In addition, you may use the thing of other materials which have pressure | voltage resistance, such as a synthetic resin and pressure | voltage resistant glass. The bottom 74 may be formed integrally with the body 73 by impact molding or the like.

  As shown in FIG. 6b, the lid 72 is connected to a mounting cup 78 fixed to the bead portion 76 of the container body 71, a cylindrical housing 80 held at the center of the lower surface of the mounting cup, and a lower end of the housing. The dip tube 81, the stem rubber 21 held between the upper end of the housing 80 and the mounting cup 78, and the closing membrane 23 provided on the upper surface of the stem rubber. The stem rubber 21 and the closure membrane 23 are substantially the same as those used in FIG.

  The mounting cup 78 acts as a cover, a curved flange 84 that is crimped to the bead portion 76 via the gasket 79, a bottomed cylindrical housing holding portion 85 that holds the housing 80, a curved flange 84, and the housing holding portion 85. Are provided with an annular recess 86 that connects the two and the opening hole 87 through which the stem passes. The mounting cup 78 is formed from a metal plate such as aluminum or tinplate.

  The gasket 79 seals between the bead portion 76 and the curved flange 84, and is made of synthetic rubber such as acrylonitrile rubber, nitrile rubber, butyl rubber, or fluorine rubber, or an elastomer.

  The housing 80 has an outer flange portion 89 and has a cylindrical shape having a dip tube engaging portion 90 at the lower end, and a stem rubber holding portion 91 is formed at the upper surface opening. The housing 80 is held by caulking the housing holding portion 85 so as to cover the outer flange 89. The housing 80 is molded from a synthetic resin such as polyacetal or polyamide.

  The dip tube 81 sucks up the contents from the lower part of the container body, and is made of a synthetic resin such as polyolefin such as polypropylene.

Such an aerosol product 70 is manufactured as follows. First, the container body 71 is filled with the stock solution. Next, the lid 72 having the gasket 79, the housing 80, the dip tube 81, and the stem rubber 21 attached to the mounting cup 78 is placed on the mouth of the container body 71. Then, the propellant is filled from between the curved flange 84 of the mounting cup and the bead portion 76 of the container body 71 (undercup filling). Finally, while pressing the mounting cup 78 downward against the container body 71, the side wall 86a of the annular recess 86 of the mounting cup 78 is squeezed outward to project from the bead portion of the container body 71 to the inner surface of the shoulder portion 75. Fix it.

  This can also be discharged using the injection member 92 of FIG. The injection member 92 is substantially the same as the injection member 30b of FIG. 3b, and has a cylindrical main body 93 that serves as a nozzle and a stem, and a cover for fixing the main body over the outer periphery of the housing holding portion 85 of the mounting cup 78. And a bottom cylindrical fixing portion 94. At the lower end of the fixing portion 94, an engaging portion 95 that engages with a reduced diameter portion of the base of the housing holding portion 85 is provided. The nozzle protruding upward is substantially the same as the case of FIG. 3b and the lower portion of the main body 93 is the same as the stem main body 42 of FIG.

  The aerosol product 96 of FIG. 7 can be used repeatedly even after the closure membrane 23 is broken, and is disposed in the housing 52 so as to be movable up and down, and holds a stem 97 that holds the stem that has broken the closure membrane 23. A spring 98 that constantly biases the valve plate against the stem rubber is provided. The container body 51, the stem rubber 21, the cover 22, the closure film 23, the lid portion 12 a including the housing 52, and the sealing material 61 are substantially the same as the aerosol product 50 in FIG. 5.

The valve plate 97 has a cylindrical shape having a bottom portion 97a, and a convex portion 97b that engages with the bottom portion 43 of the stem body is formed at the center of the bottom portion 97a. An engaging portion 99 that engages with the spring 98 is formed on the lower surface side edge of the bottom portion 97a.
The spring 98 is disposed at the bottom of the housing 52 and pushes up the valve plate 97 upward.

  The aerosol product 96 is opened by using, for example, a member having a short stem body and not having the engaging portion 39, such as the injection member 30b in FIG. 3b or the injection member 92 in FIG. 6c. That is, the closing membrane 23 is broken by inserting the stem body 42 into the housing 52. At this time, the bottom portion 43 of the stem body and the convex portion 97b of the valve plate are engaged with each other while the fracture portion of the closing film 23 is held by the bottom portion 43 of the stem body 42. As a result, the stem body 42 is supported by the valve plate 97. At this time, the stem hole 44 formed in the side surface of the stem main body 42 of the injection member is covered with the stem rubber 21, and the aerosol composition is not injected. Then, by pushing down the stem body 42 together with the valve plate 97 against the spring 98, a gap is formed between the upper end of the valve plate 97 and the lower surface of the stem rubber 21, and the aerosol composition is injected from the injection hole of the injection member. Is done. When the pressing force on the stem body is weakened, the spring 98 returns the valve plate to its original position, and the upper end of the valve plate 97 comes into contact with the lower surface of the stem rubber 21 and is sealed. The injection member may be removed after use or may be attached. As described above, the aerosol product 96 can be injected each time the stem body 42 is pushed down.

  An injection product 100 shown in FIG. 8 includes an aerosol product 70 as shown in FIG. 6 and an injection member 102 attached to the outer periphery of the lid 72, and is operated with the injection member 102 attached to the aerosol product. Thus, the sealing film of the aerosol product is opened.

  The injection member 102 of FIG. 9 is disposed so as to be movable up and down at the center of the cover member 106 to be attached to the aerosol product, and push button 107 for injecting the contents forward, and push button 107 downward. And an operation member 108 for performing an ejection operation to be moved.

The cover member 106 shown in FIG. 10 is provided in an annular shape with an annular attachment portion 111 attached to the outer periphery of the curved flange 84 (see FIG. 8) of the mounting cup 78, a pair of side wall portions 112 extending upward from the attachment portion. A guide part 113, a connecting part 114 that connects the mounting part 111 and the guide part 113, and a protective part 115 that covers the entire shoulder of the container body 71 of the aerosol product on the outer periphery of the mounting part 111.

  The mounting portion 111 is provided so as to be fitted to the outer periphery of the curved flange 84, and is detachably fixed to the aerosol container. The protection part 115 protects the mounting part 111 from an external force or the like, and prevents the mounting part 111 from being detached from the curved flange 84.

  The side wall 112 is provided so as to cover both side surfaces of the push button in order to prevent erroneous operation of the push button due to external force or the like. Further, a bearing portion 112 a for rotatably connecting the operation member 108 is provided at the upper end of the front portion of the side wall portion 112. A front wall 116 is provided in the front part above the mounting part 111, and a notch 116a is formed in the center part. However, the front wall may or may not be provided that it is open so that the aerosol composition can be injected. Further, the rear part on the mounting part 111 is also opened to operate the operation member 108. However, the rear wall on the mounting portion 111 may also be provided with a rear wall that does not interfere with the operation of the operation member 108. The front wall or the rear wall can strengthen the cover member 106 and can prevent an erroneous operation of the push button from an external force or the like.

  The guide portion 113 is composed of a plurality of members arranged in an annular shape and extending in the vertical axis direction, and a convex portion 117 protruding inward is formed at the lower end. This guides the movement of the push button 107 in the vertical direction. In this embodiment, it consists of a plurality of members, but it may consist of a single cylindrical member.

  The push button 107 shown in FIG. 11a includes a cylindrical button main body 121, a twisting member 122 having a breaking portion attached to the lower end thereof, and a nozzle member 123 attached to the front portion of the main body.

  The button main body 121 includes a lower cylindrical portion 124 and a cylindrical injection portion 125 provided at the upper end thereof, and the inside of the lower cylindrical portion 124 communicates with the inside of the injection portion 125. Further, a tail coupling portion 126 is formed inside the upper end of the lower cylindrical portion 124, and an engaging portion 127 protruding outward is formed in an annular shape on the outer periphery of the lower end. Further, locking projections 127 a and 127 b are also formed on the inner surface of the lower cylindrical portion so as to be locked with the housing holding portion 85. Further, a nozzle connecting portion 128 is formed at the tip of the injection portion 125.

  The handle member 122 is housed in the lower cylindrical portion 124 and fixed to the handle connecting portion 126, and has a cylindrical stem 129 that breaks the closing membrane, and a cylindrical engaging portion provided at the upper end thereof. 130, and the inside of the stem 129 and the inside of the engaging portion 130 communicate with each other. The stem 129 is configured such that the outer surface of the bottom surface has a V-shaped concave shape, and the closing membrane can be broken at the edge thereof. The engaging portion 130 includes an insertion portion 130a that is inserted into the twist coupling portion 126 and a flange portion 130b that comes into contact with the twist coupling portion 126, and an engagement protrusion 130c is formed on the outer periphery of the insertion portion 130a. .

  The nozzle member 123 includes an injection hole 131 that restricts the passage diameter of the aerosol composition that has passed through the button main body 121 to make a desired injection state, and a cylindrical engagement portion 132 that engages with the nozzle connection portion 128. The injection hole 131 and the inside of the engaging portion 132 communicate with each other. The engaging portion 132 includes an insertion portion 132a inserted into the nozzle connecting portion 128 and a flange portion 132b that contacts the nozzle connecting portion 128, and an engaging protrusion 132c is formed on the outer periphery of the inserting portion 132a. .

The push button 107 communicates with the finger member 122 and the nozzle member 123 by connecting them to the button body 121. Since it is configured in this manner, the inside of the aerosol container and the push button communicate with each other by breaking the closing membrane with the stem 129 of the twisting member 122, and the aerosol composition is injected from the injection hole 131.

  The operation member 108 shown in FIG. 11b is composed of a flat operation unit main body 136 that rotates about the front part, and a shaft part 137 provided at the front part. The upper surface of the operation portion main body 136 is slightly tapered downward from the middle portion to the rear portion.

  The injection member 101 configured as described above is provided such that the lower cylindrical portion 124 of the push button is inserted into the guide portion 113 of the cover member, and the shaft 137 of the operation member 108 is engaged with the bearing portion 112a of the cover member. Connected to match. And the injection member 101 is operated as follows. Returning to FIG. 8, the operation member 108 rotates around the front upper end of the cover member by pushing down the rear upper surface of the operation member 108 downward. As a result, the lower surface of the operation portion main body 136 of the operation member comes into contact with the upper end of the push button 107, and the push button 107 is pushed down. At this time, the lower cylindrical portion 124 of the push button is guided by the guide portion 113 of the cover member and moves straight down. At this time, the engaging portion 127 of the lower cylindrical portion moves over the convex portion 117 of the guide portion.

As shown in FIG. 8 b, the stem 129 of the twisting member 122 is inserted straight into the opening hole 87 of the mounting cup by the movement of the push button in this way, breaks the closing portion 23, and the center hole 21 a of the stem rubber 21. Communicate with. On the other hand, the engaging portion 127 of the lower cylindrical portion of the push button is locked to the convex portion 117 of the guide portion of the cover member and is maintained in the opened state.
Thus, the injection member 101 opens the aerosol product 100 only when it is operated when it is used. The injection member 101 includes the operation member 108 so that the closing membrane can be broken with a light force using a lever, but the operation member need not be provided. In this case, the operator depresses the push button 107 directly.

  The injection member 101 is provided with means for locking the operation member 108 in order to prevent the aerosol product 100 from being unsealed due to an erroneous operation from an external force. In this embodiment, as shown in FIG. 9, a stopper member 109 that locks the rotation of the operation member 108 is provided between the operation member 108 and the cover member 106. As shown in FIGS. 11c and 11d, the stopper member 109 has a U-shape including a handle portion 141, a leg portion 142 extending forward from both ends thereof, and a lock portion 143 connected to the center of the handle portion. . The lock portion 143 is disposed substantially without a gap between a part of the cover member 106 and a part of the operation member 108, thereby preventing the operation member 108 from moving downward. An engaging protrusion 142 a is formed at the tip of the leg 142, and the stopper member 109 is held by the cover member 106 by engaging with a locking portion 142 b (see FIG. 10 b) provided on the cover member.

The injection product 150 of FIG. 12 includes an injection member that can open the aerosol product by breaking the closure film by directly pressing the top of the push button with a finger, and operating the aerosol product 150a. And an injection member 151. The container body 150b of the aerosol product is a conventionally known three-piece can, and is provided with a metal part 150c constituting a shoulder part and a bead part at the upper end of the trunk part. The upper end of the trunk part and the lower end of the metal part 150c are connected by double winding. The injection member 151 has a push button with an injection hole facing obliquely upward, and includes a cover member 152 and a push button 153.
The cover member 152 includes a mounting part 111, a guide part 113, and a connecting part 114.

The push button 153 includes a cylindrical button main body 157, a twisting member 122 attached to the lower end thereof, and a nozzle member 123 attached to the front portion of the button main body. The twisting member 122 and the nozzle member 123 are substantially the same as those in FIG.
The button main body 157 includes a cylindrical portion 124a, and a nozzle connecting portion 128 is formed at the upper end thereof. As with the lower cylindrical portion 124 in FIG. 8, the cylindrical portion is formed with a twist coupling portion, an engaging portion, and a locking projection.

  The injection member 151 configured as described above also pushes the top surface of the push button 153 downward, so that the cylindrical portion 124a of the push button is guided by the guide portion 113 of the cover member and moves straight down, and the stem 129 is moved. The closing part 23 is broken and the central hole of the stem rubber 21 is opened.

An injection product 160 shown in FIG. 13 includes the aerosol product 10 shown in FIG. 1 and an injection member 161.
The injection member 161 includes a cylindrical button main body 163 having an upper bottom 162, an injection portion 164 extending upward from the center of the upper bottom 162, and a stem 165 extending downward from the center of the upper bottom 162.
A first engagement protrusion 166 that protrudes inward is formed on the inner surface of the button body 163, and a second engagement protrusion 167 that protrudes inward is formed on the inner surface of the lower end.

The aerosol product 10 and the injection member 161 are assembled by inserting the aerosol product 10 into the button body 163 of the injection member 161. That is, before use, the cover 22 of the aerosol product 10 is held between the first engagement protrusion 166 and the second engagement protrusion 167 of the injection member. Then, by pushing the aerosol product 10 toward the injection member 161 so that the cover 22 gets over the first engagement protrusion 166, the stem 165 breaks the closing membrane and opens the aerosol product 10.
The spray product 160 may also be provided with a means for locking to prevent erroneous operation due to external force. For example, a hole may be formed on the side surface of the button main body 163 and in the vicinity of the first engagement protrusion so that the locking member 169 can be removably inserted as shown by an imaginary line in FIG.

Stems 171a, b, c, d, and e in FIGS. 14a, b, c, d, and e show stems used in the injection member of the present invention.
The bottom surface of the stem 171a is V-shaped. The stem 171b has a V-shaped concave shape on the lower surface, and has a sharper V shape than the stem 171a. The lower surface of the stem 171c has a dish-like concave shape. The stem 171d has a conical shape whose diameter is reduced downward. The stem 171e has a sloped lower surface.
A breakage test of the stem rubber 21c and the closure membrane 23 of FIG. 2c was performed by attaching the twisting member provided with these stems to the injection member of FIG. At this time, an aluminum foil was used as the closing film.

Both stems easily broke the closure membrane and stem rubber. On the other hand, the shape of the fractured closure membrane was different.
The stems 171a, b, c were neatly punched through the stem rubber and the closure membrane as shown in FIG. 15a. The punched rubber 172 was deformed into a “he” and held on the bottom surface of the stem.
Stem 171d ruptured the stem rubber and the closure membrane, as shown in FIG. 15b, but the ruptured portion 173 remained around the punched hole and the punched hole did not form a clean circle.
The stem 171e broke the stem rubber and the closure membrane, but the broken portions 174 remained in the stem rubber and the closure membrane, respectively.

By this test, the stems 171a, b, and c were able to cleanly punch the closing membrane, and the punched rubber 172 was held at the bottom of the stem. Moreover, the passage in the stem was not clogged by the held rubber. The stems 171d and e easily broke the closure membrane, but the fracture shape did not become a circle. In this case, the sealing property is lowered between the stem and the stem rubber, leaving a possibility of leakage Ki aerosol composition I.

A Aerosol composition 10 Aerosol product 11 Container body 12, 12a Lid portion 13 Body portion 14 Bottom portion 15 Step portion 16 Mouth portion 17 Stem rubber holding portion 17a Step portion 17b Protruding portion 21 Stem rubber 21a Center hole 21b Stem rubber 21c Upper surface 22 Cover 23 Closing membrane 23a Central part 26 Side wall 27 Upper surface 28 Opening hole 30a, 30b Injection member 31 Main body 32 Detachable part 33 Stem 36 Injection hole 37 Body passage 38 Side wall 39 Engaging part 41 Connection part 42 Stem main body 43 Bottom part 43a Communication hole 44 Stem hole 45 Stem passage 46 Main body 47 Injection hole 50 Aerosol product 51 Container body 52 Housing 53 Body portion 54 Bottom portion 55 Neck portion 55a First step portion 55b Second step portion 56 Mouth portion 57 Base portion 58 Dip tube engagement portion 59 Stem rubber Holding part 5 a step portion 59b projecting portion 60 first engagement step portion 61 seal material 62 second engagement step portion 70 aerosol product 71 container body 72 lid member 73 trunk portion 74 bottom portion 75 shoulder portion 76 bead portion 78 mounting cup 79 gasket 80 housing 81 Dip tube 84 Curved flange 85 Housing holding part 86 Annular recess 86a Side wall 87 Open hole 89 Outer flange part 90 Dip tube engaging part 91 Stem rubber holding part 92 Injection member 93 Main body 94 Fixing part 95 Engaging part 96 Aerosol product 97 Valve Plate 97a Bottom portion 97b Projection portion 98 Spring 99 Engagement portion 100 Injection product 102 Injection member 106 Cover member 107 Push button
108 Operation member 109 Stopper member 111 Mounting part 112 Side wall part 112a Bearing part 113 Guide part 114 Connection part 115 Protection part 116 Front wall 116a Notch 117 Convex part 121 Button body 122 Twist member 123 Nozzle member 124 Lower cylindrical part 124a Cylindrical part 125 Injecting part 126 Fiddle connecting part 127 Engaging part 127a, b Locking protrusion 128 Nozzle connecting part 129 Stem 130 Engaging part 130a Inserting part 130b Flange part 130c Engaging protrusion 131 Injection hole 132 Engaging part 132a Inserting part 132b Flange part 132c Engagement protrusion 136 Operation part main body 137 Shaft part 141 Handle part 142 Leg part 142a Engagement protrusion 142b Locking part 143 Lock part 150 Injection product 150a Aerosol product 150b Container main body 150c Eye metal part 151 Injection member 152 Cover member 1 3 Push button 157 Button body 160 Injection product 161 Injection member 162 Upper bottom 163 Button body 164 Injection part 165 Stem 166 First engagement protrusion 167 Second engagement protrusion 169 Locking members 171a, b, c, d, e Stem 172 Rubber 173 Broken part 174 Broken part

Claims (15)

A container body having pressure resistance and an aerosol container provided with a lid for closing the opening, and an aerosol composition filled in the aerosol container, wherein the lid has a central hole whose upper end is closed by an upper surface a stem rubber you have a, on the upper surface of the stem rubber, a gas impermeable closure film which is fixed so as to cover the entire top surface, a stem rubber and closure membrane of the container body so as to cover the stem rubber A cover fixed to the opening, and an opening is formed at a position overlapping the central hole of the cover, and a portion covering the central hole of the closing membrane is raised by the pressure of the aerosol composition , Aerosol products. The aerosol product according to claim 1, wherein the stem rubber is fixed between a stem rubber holding portion formed at an upper end of the container body and the cover. The aerosol product according to claim 1, wherein the lid portion further includes a housing having a stem rubber holding portion at an upper end, and the stem rubber is fixed between the stem rubber holding portion and the cover. The aerosol product according to claim 1, wherein the aerosol composition comprises a stock solution and a liquefied gas, and the liquefied gas is 30 wt% or more. The aerosol product according to claim 1, wherein the aerosol composition comprises a stock solution and a compressed gas, and the internal pressure is 0.4 to 0.8 MPa. An injection member for opening the sealing film of the aerosol product according to claim 1 and injecting an aerosol composition, the main body having an injection hole, and extending downward from the center of the main body, for opening the closing film at the lower end An injection member comprising a stem having a breaking portion, wherein the injection hole and the breaking portion communicate with each other through a passage. The central hole of the stem rubber is circular, the stem is cylindrical, the outer surface of the bottom of the stem is broken portion exhibiting a concave communication hole through said passage and communicating on the outer surface thereof is formed, claims 6. The injection member according to 6. The injection member according to claim 7, wherein the outer surface of the bottom surface of the stem is a broken portion having a V shape. The injection member according to claim 7, wherein the outer surface of the bottom surface of the stem is a broken portion having a U shape. The injection member according to claim 7, wherein a stem hole is formed in a lower side surface of the stem. The injection member according to claim 6, wherein the injection member includes an engagement portion that engages with the container body or the lid portion and maintains the aerosol product in an open state. The injection member according to claim 6, wherein the stem is configured to be movable between an opened state in which the closing membrane is broken and a sealed state in which the stem is separated from the closing membrane. The injection member according to claim 12, further comprising a guide portion that guides the movement of the stem in a vertical direction. A cover member mounted on the aerosol container and a push button inserted into the cover member so as to freely move up and down. The cover member includes a cylindrical guide portion, and the push button moves up and down in the guide portion. The injection member according to claim 13, further comprising a cylindrical portion that moves to the cylindrical portion, wherein the cylindrical portion is provided with a stem. The guide part includes a convex part protruding inward, the cylindrical part includes an engaging part protruding outward, and the push button moves so that the cylindrical engaging part gets over the convex part. The injection member according to claim 14, wherein the sealing state is changed from the sealed state to the opened state.