JP2019163074A - Spray type product and manufacturing method of spray type product - Google Patents

Abstract

To provide a spray type product which can freely select between a continuous injection by a pressure of a propellant and a pump injection by pressurizing by a piston member even though it has a simple structure, and which can be continuously used even in the case where the propellant in a gas phase portion leaks by a wrong operation, and to provide a manufacturing method of the spray type product.SOLUTION: A spray type product includes a container body 2 in which the content including a stock solution and a propellant is filled; and a pressurizing mechanism 3 mounted on the container body. The propellant contains first compression gas in which an Ostwald coefficient with respect to water at 25°C is 0.05-1.0. The pressurizing mechanism includes a housing 5 for storing the content, and a stem mechanism 8 for pressurizing the stock solution in the housing. In the housing, an air introduction hole for introducing air is not formed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a spray product and a method for manufacturing a spray product. More specifically, according to the present invention, continuous injection (aerosol injection) by the pressure of the propellant and pump injection by pressurization by a piston member can be freely selected. The present invention relates to a spray product that can continue to be used even when leaked, and a method of manufacturing the spray product.

  Conventionally, spray products for performing pump injection and aerosol injection are known. In Patent Document 1, a valve body having a stem, a piston, and a housing for housing these is attached to a container body filled with a stock solution and a pressurizing agent. A discharge device is disclosed in which a stock solution is discharged by pressure and a stock solution is discharged by the applied pressure of the piston by a second operation of operating the piston.

JP 2014-91527 A

  In the discharge device described in Patent Document 1, when the second operation for operating the piston is performed, the pressurizing agent is discharged to the outside from the air introduction hole. For this reason, once the second operation is performed, the discharge device cannot perform discharge (aerosol injection) by the first operation thereafter. In addition, for such a situation, the discharge device is provided with a switching mechanism for switching from the first operation to the second operation in order to prevent an erroneous operation in which the second operation is unintentionally performed.

  Further, in the discharge device described in Patent Document 1, for example, when an injection operation is performed in an inverted state, the pressure agent in the gas phase portion leaks out. In this case, when the injection operation is performed again in the upright state, it is not possible to perform aerosol injection using the pressure of the pressurizing agent.

  The present invention has been made in view of such a conventional problem, and is capable of freely selecting continuous injection by the pressure of the propellant and pump injection by pressurizing with a piston member while having a simple structure. An object of the present invention is to provide a spray-type product that can be used continuously even if the propellant in the gas phase leaks due to misoperation, and a method for producing the spray-type product.

  The present invention for solving the above-described problems mainly includes the following configurations.

  (1) A container body filled with contents including a stock solution and a propellant, and a pressurizing mechanism attached to the container body, the propellant having an Ostwald coefficient of 0.05 with respect to water at 25 ° C. The compressed mechanism includes a housing that stores the stock solution, and a stem mechanism that pressurizes the stock solution in the housing, and the housing introduces air. A spray-type product that does not have an air inlet hole.

  According to such a configuration, the spray-type product can continuously inject the stock solution by the pressure of the propellant when the stem is slid for a predetermined distance. Further, the spray-type product can be pumped by pressurizing the stock solution in the housing with the piston member by further sliding the stem. Further, the spray-type product has no air introduction hole formed in the housing. Therefore, the spray-type product does not communicate with the outside when the contents in the container main body are introduced into the housing after pump injection. As a result, the propellant is not discharged to the outside when pump injection is performed. Therefore, the spray-type product can freely select continuous injection and pump injection by a simple operation of adjusting the operating amount of the stem. Further, the spray-type product does not require a separate member when switching between continuous injection and pump injection. Therefore, the structure of the spray-type product is simple. In addition, for example, where it should originally be used in an upright state, if an injection operation is performed in an inverted state due to an erroneous operation, there is a risk that the propellant in the gas phase portion will leak out. However, the container body is sealed by a pressurizing mechanism, and contains a first compressed gas having an Ostwald coefficient of 0.05 to 1.0 with respect to water at 25 ° C. According to such a configuration, even when the propellant is leaked due to an erroneous operation and the pressure in the container body is reduced, the first compressed gas dissolved in the stock solution is vaporized to reconstruct the gas phase portion. To do. Therefore, even if the pressure in the container body is reduced, the spray-type product is replenished with gas in the gas phase portion by the first compressed gas and can be used continuously. Even when pump injection is performed, the spray-type product is unlikely to become negative pressure inside the container body and is not deformed, so that it can be stably discharged to the end.

  (2) The spray-type product according to (1), wherein the propellant further includes a second compressed gas having an Ostwald coefficient with respect to water at 25 ° C. of 0.01 to 0.03.

  According to such a configuration, the second compressed gas is less dissolved in the stock solution than the first compressed gas. Therefore, the second compressed gas is present more in the gas phase portion of the container body than the first compressed gas. As a result, in the spray-type product, when the propellant leaks to the outside due to misuse, a large amount of the second compressed gas is leaked, and leakage of the first compressed gas is suppressed. Therefore, even if the spray-type product is misused, the gas phase portion is replenished with the first compressed gas and can be used continuously. Even when pump injection is performed, the spray-type product is unlikely to become negative pressure inside the container body and is not deformed, so that it can be stably discharged to the end.

  (3) The spray-type product according to (2), wherein the first compressed gas is carbon dioxide gas, and the second compressed gas is nitrogen gas or air.

  According to such a configuration, in the spray-type product, a large amount of nitrogen or air is present in the gas phase portion, and a large amount of carbon dioxide gas is dissolved in the stock solution. High replenishment effect. Moreover, even if synthetic resin is used as the container body, the amount of carbon dioxide leakage due to permeation is reduced.

  (4) Filling the container body with a stock solution in a pressure vessel, cooling to 5 ° C. or less, a step of dissolving the propellant in the stock solution, and the stock solution in which the propellant is saturated and dissolved. Then, by attaching a pressure mechanism and sealing, and returning to room temperature, a part of the propellant is vaporized from the stock solution in which the propellant is saturated and dissolved, and the pressure in the container body is reduced. Adjusting to 0.05 MPa (25 ° C., gauge pressure) or more, and the propellant includes a first compressed gas having an Ostwald coefficient of 0.05 to 1.0 at 25 ° C. for water, The pressurizing mechanism includes a housing that stores the stock solution and a stem mechanism that pressurizes the stock solution in the housing, and the housing is a spray type in which an air introduction hole for introducing air is not formed. Product manufacturing .

  According to such a configuration, the resulting spray-type product does not have an air introduction hole formed in the housing, and the inside of the container body can be sealed by attaching a pressurizing mechanism. Therefore, the spray-type product does not leak the propellant from the air introduction hole, vaporizes a part of the propellant from the stock solution in which the propellant is saturated and dissolved, and the pressure in the container body is 0.05 MPa or more. Can be adjusted. As a result, according to the manufacturing method of the present invention, the spray-type product does not have to be filled with the amount of propellant assuming the pressure after saturation dissolution in the container body, and the propellant must be saturated and dissolved in the stock solution in the container body Therefore, the inside of the container main body does not become a high pressure, and for example, the material of the container main body can be reduced by reducing the thickness of the trunk portion. Moreover, the spray type product obtained can inject | pour stock solution continuously with the pressure of a propellant, when a stem is slid a predetermined distance. Further, the spray-type product can be pumped by pressurizing the stock solution in the housing with the piston member by further sliding the stem. Further, the spray-type product has no air introduction hole formed in the housing. Therefore, the spray-type product does not communicate with the outside when the contents in the container main body are introduced into the housing after pump injection. As a result, the propellant is not discharged to the outside when pump injection is performed. Therefore, the spray-type product can freely select continuous injection and pump injection by a simple operation of adjusting the operating amount of the stem. Further, the spray-type product does not require a separate member when switching between continuous injection and pump injection. Therefore, the structure of the spray-type product is simple. In addition, for example, where it should originally be used in an upright state, if an injection operation is performed in an inverted state due to an erroneous operation, there is a risk that the propellant in the gas phase portion will leak out. However, the container body is sealed by a pressurizing mechanism, and contains a first compressed gas having an Ostwald coefficient of 0.05 to 1.0 with respect to water at 25 ° C. According to such a configuration, even when the propellant is leaked due to an erroneous operation and the pressure in the container body is reduced, the first compressed gas dissolved in the stock solution is vaporized to reconstruct the gas phase portion. To do. Therefore, even if the pressure in the container body is reduced, the spray-type product is replenished with gas in the gas phase portion by the first compressed gas and can be used continuously. Even when pump injection is performed, the spray-type product is unlikely to become negative pressure inside the container body and is not deformed, so that it can be stably discharged to the end.

  (5) The said propellant is a manufacturing method of the spray type product as described in (4) which further contains the 2nd compressed gas whose Ostwald coefficient with respect to the water in 25 degreeC is 0.01-0.03.

  According to such a configuration, the second compressed gas is less dissolved in the stock solution than the first compressed gas. Therefore, the second compressed gas is present more in the gas phase portion of the container body than the first compressed gas. As a result, when the propellant leaks to the outside due to misuse, a large amount of the second compressed gas is leaked, and leakage of the first compressed gas is suppressed. Therefore, even if the spray-type product is misused, the gas phase portion is replenished with the first compressed gas and can be used continuously. Even when pump injection is performed, the spray-type product is unlikely to become negative pressure inside the container body and is not deformed, so that it can be stably discharged to the end.

  According to the present invention, it is possible to freely select continuous injection by the pressure of the propellant and pump injection by pressurizing with a piston member, and the propellant in the gas phase portion by an erroneous operation. Even in the case of leakage, a spray product that can continue to be used can be provided.

FIG. 1 is a schematic cross-sectional view of a spray product according to an embodiment of the present invention. FIG. 2 is a sectional view of a pressurizing mechanism for a spray-type product according to an embodiment of the present invention. FIG. 3 is a schematic cross-sectional view of a pressurizing mechanism that is displaced to a continuous injection state in which continuous injection is performed in the spray-type product of one embodiment of the present invention. FIG. 4 is a schematic cross-sectional view of a spray-type product according to an embodiment of the present invention including a pressurizing mechanism that is displaced to a pump injection state in which pump injection is performed. FIG. 5 is a cross-sectional view of a pressurizing mechanism that is displaced to a pump injection state in which pump injection is performed in the spray-type product of one embodiment of the present invention. FIG. 6 is a schematic cross-sectional view of a spray product for explaining a state in which contents are introduced into a housing after pump injection in the spray product of one embodiment of the present invention. FIG. 7 is a schematic cross-sectional view of a spray product according to another embodiment of the present invention. FIG. 8 is an external view photograph of the spray-type product of Example 1. FIG. 9 is a photograph of the appearance of the spray product of Example 1 after repeated pump injection. FIG. 10 is an external view photograph (enlarged view of the lower part of the container main body) of the spray-type product of Example 1, showing a state in which the pressurizing agent dissolved in the stock solution after the pump injection is vaporized. FIG. 11 is a photograph of the appearance of the spray-type product of Comparative Example 1 after repeating the pump injection.

[Spray type products]
A spray product according to an embodiment of the present invention will be described in detail with reference to the drawings. Drawing 1 is a typical sectional view of spray type product 1 of this embodiment. FIG. 2 is a cross-sectional view of the pressurizing mechanism of the spray-type product 1 of the present embodiment shown in FIG. The spray-type product 1 shown in FIG. 1 and FIG. 2 is in a state where the injection operation is not performed (non-injection state). The spray-type product 1 of the present embodiment includes a container body 2 filled with contents including a stock solution and a propellant, a pressurizing mechanism 3 attached to the container main body 2, and an injection member attached to the pressurizing mechanism 3. 4 is mainly provided. The propellant includes a first compressed gas having an Ostwald coefficient with respect to water at 25 ° C. of 0.05 to 1.0, and preferably has an Ostwald coefficient with respect to water at 25 ° C. of 0.01 to 0.03. 2 compressed gas. The pressurizing mechanism 3 mainly includes a housing 5 that stores the stock solution and a stem mechanism 8 that pressurizes the stock solution in the housing 5. The housing 5 is not formed with an air introduction hole for introducing air. The stem mechanism 8 includes a stem body 81 and a piston member 82. The spray-type product 1 makes the outside communicate with the inside of the container body 2 when a first operation is performed in which the stem body 81 is slid a predetermined distance. Moreover, the spray type product 1 will pressurize the undiluted | stock solution in the housing 5 with the piston member 82, if the 2nd operation | movement by which the stem main body 81 is further slid by predetermined distance is performed. Hereinafter, the contents and apparatus configuration of the spray product 1 of the present embodiment will be described.

<Contents>
The contents are filled in the container body 2 and include a stock solution and a propellant. The stock solution is supplied from the container body 2 to the pressurizing mechanism 3 by operating the injection member 4, and is injected by being pressurized by the pressure of the propellant or the pressurizing mechanism 3. Specifically, the stock solution is taken in from the lower end of the tube 52 and passes through the space S1 of the housing 5 or temporarily stored in the space S1, and then the external stem passage 85a of the external stem 85 and the nozzle of the injection nozzle 41. It is supplied to the inner passage 41b and injected from the injection hole 43a.

Stock solution The stock solution is a liquid component filled in the container body 2. The stock solution contains conventionally known components. For example, the stock solution is water, alcohol, oil, surfactant, thickener, powder, and other active ingredients (humectants, vitamins, UV absorbers, cooling agents, styling agents, deodorant ingredients, bactericides. Disinfectants, pest repellents, insecticide ingredients, fragrances, pigments, etc.).

  The method for preparing the stock solution is not particularly limited. For example, the stock solution can be prepared by dissolving or emulsifying / dispersing the above-described components (active ingredient, surfactant, oil, powder, etc.) in a solvent such as water or alcohol.

  The filling amount of the stock solution is not particularly limited. As an example, the filling rate of the stock solution is preferably 70 to 90% by volume when the full volume in a state where the pressurizing mechanism is attached to the container body is 100% by volume. It is preferably 75 to 85% by volume. In this case, the propellant is filled in a space that occupies the remaining 10 to 30% by volume of the container body 2, and is preferably filled in a space that occupies 15 to 25% by volume.

-Propellant A propellant is mix | blended in order to pressurize a stock solution and to inject continuously. Further, as will be described later, when the spray-type product is pump-injected, the stock solution to be injected next is supplied (supplemented) into the housing from the container body each time. The propellant is blended in order to reduce the pressure drop in the container body and thereby prevent deformation of the container body even when the stock solution is supplied from the container body into the housing. That is, since the spray-type product 1 includes the propellant, the stock solution can be continuously sprayed or pumped.

  A propellant contains the 1st compressed gas whose Ostwald coefficient with respect to the water in 25 degreeC is 0.05-1.0. The first compressed gas is carbon dioxide (Ostwald coefficient: 0.759), nitrous oxide (Ostwald coefficient: 0.059), or the like. Among these, the first compressed gas is vaporized in the container body to form the gas phase portion even when the propellant in the gas phase portion is leaked due to an erroneous operation such as inverted injection. Carbon dioxide is preferable because it is easy to use and the pressure drop of the spray-type product 1 when it is continuously used is easily suppressed.

  It is preferable that the propellant further includes a second compressed gas having an Ostwald coefficient with respect to water at 25 ° C. of 0.01 to 0.03. The second compressed gas is nitrogen gas (Ostwald coefficient: 0.014), air (Ostwald coefficient: 0.017), oxygen gas (Ostwald coefficient: 0.028), or the like. Among these, the second compressed gas has a small amount dissolved in water and tends to exist in the gas phase portion of the container body. When the propellant leaks to the outside due to misuse, the first compressed gas is used. In view of the fact that the first compressed gas is more likely to leak out and remain in the stock solution, nitrogen gas and air are preferable, and nitrogen gas is more preferable.

  In the case where the second compressed gas is used in combination, the blending ratio of the first compressed gas and the second compressed gas is not particularly limited. For example, the blending ratio of the first compressed gas and the second compressed gas is preferably 95: 5 to 20:80, more preferably 90:10 to 30:70 in terms of mass ratio. preferable. When the blending ratio is within the above range, the obtained spray product 1 has a high gas replenishing effect even if the propellant leaks due to misuse, and can be used continuously.

  The internal pressure at 25 ° C. of the container body 2 in the state where the stock solution and the propellant are filled in the spray-type product 1 of the present embodiment is not particularly limited. As an example, the internal pressure is preferably 0.05 MPa (gauge pressure) or more, and more preferably 0.1 MPa (gauge pressure) or more. The internal pressure is preferably 0.6 MPa (gauge pressure) or less, and more preferably 0.5 MPa (gauge pressure) or less. When the internal pressure of the container body 2 is less than 0.05 MPa (gauge pressure), the spray-type product 1 tends to decrease the amount of stock solution that can be continuously sprayed because the internal pressure is excessively lowered due to continued use. The container body 2 is likely to be deformed after the pump injection when the amount is reduced. On the other hand, when the internal pressure of the container main body 2 exceeds 0.6 MPa (gauge pressure), the spray type product 1 becomes difficult to push down the stem mechanism 8 and the operability is deteriorated. In addition, a strong container body is required.

<Device configuration>
Next, the apparatus structure of the spray type product 1 for injecting the content will be described. In addition, the apparatus structure of the spray type product 1 shown below is an example. That is, the apparatus configuration of the spray-type product 1 according to the present embodiment includes a container body 2 and a pressurizing mechanism 3, and the pressurizing mechanism 3 includes a housing 5 in which no air introduction hole is formed and a stem mechanism 8. Accordingly, any configuration may be used as long as the stock solution can be pressurized and injected.

(Container body 2)
The container main body 2 is a container for filling contents, and has a bottomed cylindrical main body portion 21 and a cylindrical neck portion that is smaller in diameter than the main body portion 21 and is integrally provided on the upper portion of the main body portion 21. 22. The main body portion 21 has a bottom portion 21a whose central portion bulges toward the inside of the container main body 21, a cylindrical body portion 21b that forms the side periphery of the main body portion 21, and a diameter reduced from the upper end of the body portion 21b. 22 includes a shoulder portion 21c continuous with the lower end of 22. An opening is formed in the upper portion of the neck portion 22, and a screw portion for attaching the screw cap 9 is formed on the outer peripheral surface. The opening is a filling port when the stock solution is filled, and is sealed by the pressurizing mechanism 3 after the stock solution is filled.

  The container main body 2 is composed of a liquid phase portion composed of a stock solution in which some of the propellant is dissolved and a gas phase portion composed of the propellant and the outside air in a state where the contents are filled. In the stock solution, the first compressed gas in the propellant is dissolved somewhat more than the second compressed gas. The first compressed gas in the dissolved liquid phase portion is the first compressed gas even when the propellant in the gas phase portion is leaked due to an erroneous operation such as inverted injection. Since it is dissolved in the stock solution, it is difficult to be leaked and vaporizes in the container body to form the gas phase portion again. Therefore, the spray-type product 1 can be continuously used even when the gas in the gas phase portion leaks due to an erroneous operation.

  The material which comprises the container main body 2 is not specifically limited. Examples of the material constituting the container body 2 include synthetic resins such as polyethylene terephthalate, polyethylene, and polypropylene, glass, and metals such as aluminum and tinplate. In the case of using a synthetic resin, for example, an ultraviolet absorber may be contained to prevent deterioration of the stock solution due to sunlight, and carbon or silica is used on the outer surface or inner surface of the container body to prevent the propellant from permeating. May be deposited. Of these materials, the container body of the present embodiment may have a material and thickness that can be deformed when the inside of the container body becomes negative pressure. That is, in general, when the container body is made of metal or synthetic resin and the body is thin, spray type (pump type) products will continue to be used and the pressure inside the container body will decrease. However, a dent etc. may be produced and it may change. In this case, the spray-type product may not be able to spray the contents, or may be difficult to spray with a uniform composition. However, in the spray-type product of the present embodiment, even when such a container body with a thin body portion is used, after the pump injection is performed, the stock solution is transferred from the container body 2 into the housing 5. Even if supplied, the first compressed gas dissolved in the undiluted solution remaining in the container body 2 is vaporized to reconstruct the gas phase portion in the container body 2. For this reason, the pressure in the container main body is unlikely to be a negative pressure, and the container main body is not easily deformed. Specifically, when the container body of the present embodiment is made of synthetic resin, the thickness of the body portion may be 0.1 to 0.7 mm, or 0.2 to 0.6 mm. Good. Moreover, when it is metal, 0.1-0.3 mm may be sufficient as the thickness of a trunk | drum, and 0.1-0.2 mm may be sufficient as it.

(Pressure mechanism 3)
The pressurizing mechanism 3 is a member that seals the inside of the container body 2 by being attached to the container body 2 to confine the propellant, and takes in the stock solution from the container body 2 and injects it. The pressurizing mechanism 3 mainly includes a cylindrical housing 5, a valve main body 6 accommodated in the housing 5, a contact member 7 that controls an upward displacement of a piston member described later, and a screw cap 9. Prepare for. The valve body 6 includes a stem mechanism 8 that is accommodated in the housing 5 so as to be slidable in the vertical direction. The stem mechanism 8 includes a stem body 81, a piston member 82 that slides in the vertical direction in the housing 5 in cooperation with the stem body 81, and a spring member 83 that biases the stem body 81 upward. The internal stem 84 of the stem body 81 and the piston member 82 are in contact with each other in a non-injecting state, and form a seal portion. As will be described later, this seal portion is opened when a first operation is performed in which the stem body 81 is slid downward by a predetermined distance. Thereby, the outside and the inside of the housing 5 communicate with each other, and the stock solution is continuously injected by the pressure in the container body (continuous injection state). On the other hand, when the second operation in which the stem body 81 is further slid downward by a predetermined distance is performed, the piston member pressurizes and injects the stock solution in the housing 5 (pump injection state). Thus, the pressurizing mechanism 3 can be displaced from the non-injection state to the continuous injection state in which the stock solution is continuously injected by the first operation of the stem body 81, and further in the housing 5 by the second operation of the stem body 81. It is possible to shift to a pump injection state in which the stock solution is pressurized and injected.

・ Housing 5
The housing 5 includes a cylindrical housing body 51.

  The housing body 51 is a cylindrical member in which a space S1 in which a stock solution taken from the container body 2 passes or is temporarily stored is formed. The housing body 51 has an upper end formed with an opening through which an outer stem 85 described later appears and a lower end to which a tube 52 for taking in the stock solution stored in the container body 2 is connected.

  At the upper end of the housing main body 51, a flange portion 51a that projects outward in the radial direction is provided. The flange portion 51 a is placed on the upper surface of the opening of the container body 2 and is a part for positioning the housing body 51. The size (outer diameter) of the flange portion 51 a is the outer diameter of the neck portion 22 of the container body 2. Is approximately the same. A gasket 53 is attached to the lower surface of the flange portion 51a, and the inside of the container can be hermetically sealed by sandwiching the gasket 53 between the lower surface of the flange portion 51a and the upper surface of the opening of the neck portion 22. . In the state where the housing main body 51 is positioned by the flange portion 51a, the outer peripheral wall of the housing main body 51 and the inner peripheral wall of the neck portion 22 of the container main body 2 are separated from each other and become a space for filling the propellant.

  Near the lower end of the housing body 51, a small diameter portion 51 b having a smaller diameter than the housing body 51 is formed. A tube 52 is inserted into the small diameter part 51b. The tube 52 is a relatively long cylindrical member extending to the vicinity of the inner bottom of the container body 2, and is immersed in the stock solution stored in the container body 2 by one end inserted into the small-diameter portion 51 b and takes in the stock solution. And the other end on which the opening is formed.

  In the center of the small diameter portion 51b, a stock solution intake hole 51c for introducing a stock solution taken from the container body 2 through the tube 52 into the space S1 of the housing body 51 is formed. A check valve mechanism 54 is provided at a connection point between the stock solution intake hole 51c and the space S1.

  The check valve mechanism 54 is a valve mechanism for taking in the stock solution in one direction from the container body 2 to the space S1, and appropriately opens and closes the stock solution intake hole 51c. The check valve mechanism 54 includes a mortar-shaped recess 54a formed by the inner peripheral wall of the housing body 51 bulging inward in the radial direction in the vicinity of the lower end of the housing body 51, and a ball dropped into the recess 54a. 54b. When the injection member 4 is not operated, the ball 54b closes the communication point between the stock solution intake hole 51c and the space S1 by its own weight. In addition, when pump injection is performed, the stock solution intake hole 51c is closed, and the stock solution in the space S1 is pressurized by the piston member and sprayed to the outside. On the other hand, the ball 54b is lifted by the liquid flow generated when the stock solution is continuously jetted by the pressure of the propellant or when the stock solution in the container body 2 is taken into the space S1 after the pump jet is performed. The communication location between the stock solution intake hole 51c and the space S1 is opened.

  The screw cap 9 is a member for pressing the upper surface of the contact member 7 and improving the airtightness in the container body 2. The screw cap 9 is provided in a disc-shaped top plate 9a having an opening in the center, a side peripheral portion 9b provided downward from the outer peripheral edge of the top plate 9a, and provided upward from the inner peripheral edge of the top plate 9a. And a cylindrical mounting portion 9c. A screw portion is formed on the inner surface of the side peripheral portion 9 b and is screwed to the screw portion of the neck portion of the container body 2. The mounting portion 9c includes a cover portion 9d that is provided radially inward on the inner peripheral wall, and an engaging portion 9e that is provided so as to protrude radially outward on the outer peripheral wall. The cover portion 9d is a part for positioning a contact member 7 described later with respect to the housing body 51. The engaging part 9 e is a part for attaching the injection member 4 to the screw cap 9.

・ Valve body 6
The valve body 6 is a member for sending the stock solution taken in from the container body 2 to the injection member 4, and includes a stem mechanism 8 that is accommodated in the housing body 51 so as to be slidable in the vertical direction. The stem mechanism 8 includes a stem body 81, a piston member 82 that slides in the vertical direction in the housing 5 in cooperation with the stem body 81, and a spring member 83 that biases the stem body 81 upward.

  The stem body 81 is attached to the piston member 82 in a non-injection state, thereby forming a seal portion for preventing the undiluted solution from being injected from the space S1 to the outside, and an upper portion of the internal stem 84. And an outer stem 85 that protrudes and protrudes from an opening formed in the upper end of the housing body 51. The inner stem 84 and the outer stem 85 are provided on the same axis, and slide integrally in the housing body 51 in the vertical direction.

  The inner stem 84 has a substantially bowl-like shape that faces downward, and has a relatively large-diameter hook-like portion 84a whose upper surface is connected to the upper end of the spring member 83, and a smaller diameter than the hook-like portion 84a. And a cylindrical cylindrical portion 84b extending upward from the center of the upper surface.

  An annular contact groove 84c with which the lower end of the inner sliding portion 86 of the piston member 82 comes into contact is formed at a connection location between the upper surface of the bowl-shaped portion 84a and the cylindrical portion 84b. The upper end of the spring member 83 is inserted into the lower surface of the bowl-shaped portion 84a. A cutout groove 84d extending in the vertical direction of the hook-shaped portion 84a is formed on the outer peripheral edge of the hook-shaped portion 84a. In addition, in the lower surface of the bowl-shaped portion 84a, the vicinity of the outer peripheral edge comes into contact with the contact step 51d bulging radially inward from the inner peripheral surface of the housing body 51 in the pump injection state described later. The stem body 81 is prevented from sliding downward by contacting the contact step 51d in the pump injection state.

  The outer stem 85 is formed with an outer stem passage 85a through which the stock solution taken into the housing 5 further passes. The outer stem 85 has a truncated cone-shaped skirt portion 85b and a cylinder whose diameter is reduced from the upper end to the upper side of the skirt portion 85b. A shape portion 85c. The upper end of the cylindrical part 85c protrudes from the container main body 2, and the injection member 4 is attached.

  An abutting step 85d that is pressed against the piston member 82 when the pressurizing mechanism 3 is displaced from a non-injection state to be described later to a pump injection state is formed on the inner peripheral surface of the skirt portion 85b. The inner diameter of the skirt portion 85b is larger than the outer diameter of the cylindrical portion 84b. Therefore, the inner peripheral wall of the skirt portion 85b is separated from the outer peripheral wall of the cylindrical portion 84b. An upper inner sliding portion 86a of a piston member 82, which will be described later, is inserted into the space formed as described above.

  The inner diameter of the cylindrical portion 85c is approximately the same as the outer diameter of the cylindrical portion 84b. Therefore, the outer stem 85 is attached to the inner stem 84 by inserting the upper portion of the cylindrical portion 84b from the lower end side of the cylindrical portion 85c.

  The piston member 82 is a member for partitioning the space S <b> 1 inside the housing body 51, and slides in the housing body 51 in the vertical direction in cooperation with the internal stem 84 and the external stem 85 as appropriate. The piston member 82 includes an inner sliding portion 86 that slides along the outer peripheral wall of the inner stem 84, an outer sliding portion 87 that slides along the inner peripheral wall of the housing body 51, and the inner sliding portion 86 and the outer side. And a connecting ring 88 that connects the sliding portion 87. The connecting ring 88 connects the vicinity of the center between the inner sliding portion 86 and the outer sliding portion 87.

  The inner sliding portion 86 includes an upper inner sliding portion 86 a corresponding to the upper portion of the connection portion with the connection ring 88 and a lower inner sliding portion 86 b corresponding to the lower portion of the connection portion with the connection ring 88.

  The upper end of the upper inner sliding portion 86a is inserted into a space formed between the outer peripheral wall of the inner stem 84 and the inner peripheral wall of the skirt portion 85b of the outer stem 85, and the pressurizing mechanism 3 is continuously injected from the non-injecting state. When the outer stem 85 and the inner stem 84 are slid downward when displacing to the state or the pump injection state, they are inserted deeply into the space formed by the outer peripheral wall of the inner stem 84 and the inner peripheral wall of the outer stem 85. Is done. When the piston member 82 is displaced from the non-injection state to the pump injection state, the piston member 82 slides downward integrally with the stem body 81 after the upper inner sliding portion 86a contacts the contact step portion 85d. To do.

  When the inner stem 84 is urged upward by the spring member 83, the lower inner sliding portion 86b forms a seal portion by contacting the vicinity of the contact groove 84c and the lower end of the flange-shaped portion 84a to form a seal portion. Be energized by.

  The outer sliding portion 87 is a cylindrical member and slides along the inner peripheral wall of the housing body 51. The outer sliding portion 87 includes an upper outer sliding portion 87 a corresponding to the upper portion of the connection portion with the connecting ring 88 and a lower outer sliding portion 87 b corresponding to the lower portion of the connecting portion with the connecting ring 88. .

  In the non-injection state, the upper end of the upper outer sliding portion 87a is urged upward by the spring member 83 via the inner stem 84 and comes into contact with the lower end of the contact member 7 described later.

  Examples of the material constituting the piston member 82 include materials having elasticity such as synthetic resin, silicone rubber, and synthetic rubber.

  The spring member 83 is a member for urging the stem body 81 upward, and has an upper end connected to the lower surface of the bowl-shaped portion 84a and a lower end attached around the recess 54a. The spring member 83 is disposed in a compressed state in the housing body 51 and biases the internal stem 84 upward. Further, the lower end of the spring member 83 is reduced in diameter toward the inside in the radial direction so as to be smaller than the diameter of the ball 54b. Thus, even when the ball 54b is pushed upward by the liquid flow when the raw liquid is taken in from the container body 2 in a continuous injection state or a pump injection state, which will be described later, the ball 54b remains at the lower end of the spring member 83. Be stopped by.

  The valve body 6 configured as described above is fixed to the container body 2 by screwing the screw cap 9 into the container body 2.

・ Abutting member 7
The abutting member 7 is fitted into the opening of the housing main body 51 and contacts the step formed between the skirt portion 85b and the cylindrical portion 85c of the outer stem 85 to position the stem main body 81, and further, the piston It is a member that contacts the upper end of the upper outer sliding portion 87a of the member 82 to position the piston member 82.

  The contact member 7 includes a top surface portion 71 that contacts the back surface of the cover portion 9 d of the screw cap 9, and a cylindrical contact leg portion 72 that is fitted into the opening of the housing body 51. The top surface portion 71 is sandwiched between the back surface of the screw cap 9 and the flange portion 51 a of the housing body 51. Thereby, the contact member 7 is positioned. The lower end of the contact leg 72 is in contact with the upper end of the upper outer sliding portion 87a and defines the position of the piston member 82 in the non-injection state.

(Injection member 4)
The injection member 4 includes an injection nozzle 41 attached to the external stem 85 and an operation unit 42 attached to the screw cap 9.

  The injection nozzle 41 is an L-shaped cylindrical body, and includes one end connected to the upper end of the cylindrical portion 85c and the other end connected to the tip nozzle 43. On the outer peripheral wall of the injection nozzle 41, there is provided a rotating shaft 41a that is pivotally supported by a bearing formed on a side wall of a lever 42b described later.

  The tip nozzle 43 is a jig for adjusting the injection direction, injection shape, and the like of the raw liquid, and includes one end connected to the injection nozzle 41 and the other end formed with an injection hole 43a through which the raw liquid is injected. . In the spray-type product 1 of the present embodiment, a nozzle tip 43 b having a mechanical breakup mechanism is attached to the tip nozzle 43. The mechanical breakup mechanism is a mechanism for spraying the stock solution uniformly over a wide range, and has a groove (channel) for applying a turning force to the stock solution to make it fine to an appropriate size.

  The operation part 42 is a part for sliding the stem body 81 in order to inject the stock solution stored in the space S1, and is supported by the lever support part 42a attached to the attachment part 9c and the lever support part 42a. Lever 42b.

  The lever support part 42a includes a cylindrical main body part 42c and a support arm 42d protruding from the side wall of the main body part 42c. The main body portion 42c is formed with an annular groove 42e into which the mounting portion 9c is inserted. The lever support portion 42a is attached to the screw cap 9 by inserting the attachment portion 9c into the annular groove 42e. In the vicinity of the upper end of the support arm 42d, a rotating shaft 42f that is pivotally supported by a bearing (not shown) provided on a lever 42b described later is formed.

  The lever 42b is a part operated by the user at the time of ejection, and includes a trigger part 42g operated by the user at the time of ejection. The injection member 4 pushes down the injection nozzle 41 downward by the user pulling the trigger portion 42g.

<Example of displacement of pressurizing mechanism 3>
Next, the displacement of the pressurizing mechanism 3 in the case of injecting the stock solution using the spray-type product 1 having the above configuration will be described with reference to FIGS. 3 to 6 in addition to FIGS. 1 and 2. FIG. 3 is a schematic cross-sectional view of the pressurizing mechanism 3 that is displaced to a continuous injection state in which continuous injection is performed. FIG. 4 is a schematic cross-sectional view of the spray-type product 1 in which the pressurizing mechanism 3 is displaced into a pump injection state in which pump injection is performed. FIG. 5 is a schematic cross-sectional view of the pressurizing mechanism 3 that is displaced to a pump injection state in which pump injection is performed. FIG. 6 is a schematic cross-sectional view of the spray-type product 1 for explaining a state in which the stock solution is introduced into the housing after pump injection. The pressurizing mechanism 3 may be displaced from the non-injection state to the continuous injection state, or may be displaced from the non-injection state to the pump injection state. Note that the pressurizing mechanism 3 of the present embodiment is not substantially displaced in the continuous injection state (or for a short time), for example, when the injection member 4 is largely operated on the trigger part 42g in a short time by the user. Is displaced from the non-injection state to the pump injection state.

(Non-injection state)
First, in a non-injection state where the stock solution is not injected (a state before injection), as shown in FIG. 1, the internal stem 84, the external stem 85 and the piston member 82 are biased upward by the spring member 83. Is done. In this case, the piston member 82 forms a seal portion by bringing the lower inner sliding portion 86b into contact with the contact groove 84c. For this reason, the stock solution is not injected because the passage to the injection member 4 is blocked.

(Continuous injection state)
On the other hand, the pressurizing mechanism 3 can be easily displaced from a non-injection state to a continuous injection state in which continuous injection is performed. Specifically, when the user operates the trigger portion 42g and the injection nozzle 41 is pushed down somewhat downward, the internal stem 84 and the external stem 85 are integrated downward somewhat (for example, 1-2 mm). ) Sliding (first operation). At this time, the piston member 82 does not contact the external stem 85 and therefore does not move. As a result, as shown in FIG. 3, due to this displacement, the lower end of the lower inner sliding portion 86b is separated from the contact groove 84c. As a result, the passage from the space S1 to the injection member 4 is opened, that is, the seal portion formed by the lower inner sliding portion 86b of the piston member 82 and the contact groove 84c of the inner stem 84 is opened by the first operation. The inside of the main body 2 communicates with the outside. At this time, in the spray-type product 1 of the present embodiment, the stock solution lifts the balls 54b upward and is supplied to the space S1 according to the pressure difference with the outside. Further, the stock solution passes through the gap between the lower inner sliding portion 86b and the contact groove 84c, the outer stem passage 85a, and is continuously injected from the injection hole 43a (see FIG. 1). In FIG. 3, an arrow A <b> 1 indicates the flow of the stock solution taken from the container body 2.

  In the continuous injection state, the spray-type product 1 can continuously inject the required amount as long as the trigger portion 42g is maintained in an operated state without repeatedly operating the trigger portion 42g. When the trigger operation is stopped after the continuous injection, the internal stem and the external stem are returned to their original positions by the spring member, and the seal portion is sealed. When the stock solution in the container body 2 decreases due to the injection, the pressure in the container body 2 decreases, but the first compressed gas dissolved in the stock solution is vaporized and the gas in the gas phase portion is replenished.

(Pump injection state)
The pressurizing mechanism 3 can be easily displaced from the non-injection state or the continuous injection state to the pump injection state. Specifically, as shown in FIG. 4, when the user further operates the trigger portion 42g, the injection nozzle 41 is further pushed down. At this time, as shown in FIG. 5, the inner stem 84 and the outer stem 85 are integrated until the contact step 85d of the skirt portion 85b contacts the upper end of the upper inner sliding portion 86a of the piston member 82. Then, the inner stem 84, the outer stem 85, and the piston member 82 are integrally slid downward (for example, 3 to 10 mm) (second operation). As a result, in the spray-type product 1, the volume of the space S1 is reduced. At this time, the ball 54b sinks due to downward urging due to a decrease in the volume of the space S1, and closes the stock solution intake hole 51c. The stock solution (not shown) stored in the space S1 is pressurized and passes through the gap between the lower inner sliding portion 86b and the contact groove 84c, the outer stem passage 85a, and the injection hole 43a (see FIG. 1).

  Thereafter, when the operation of the trigger part 42g by the user is stopped, the returning operation and the operation of taking the stock solution into the space S1 are started. That is, by the biasing force of the spring member 83, the inner stem 84, the outer stem 85, and the piston member 82 are pushed upward to return to their original positions, and the space S1 and the outside are shut off again. The upward sliding of the inner stem 84, the piston member 82, and the outer stem 85 is restrained by the upper end of the upper outer sliding portion 87a coming into contact with the lower end of the contact leg portion 72 of the contact member 7. .

  Thus, when the internal stem 84, the external stem 85, and the piston member 82 are pushed up together by the spring member 83, the communication between the space S1 and the outside is blocked. Further, the ball 54b is moved upward by the flow of the stock solution to which the pressure of the propellant and the suction force when the stem mechanism is pushed up, and the place where the stock solution intake hole 51c and the space S1 are communicated with each other opens the space S1. A new amount of stock solution is newly taken from the container body 2. Also at this time, since the stock solution in the container body 2 is reduced and the pressure in the container body 2 is reduced, the first compressed gas dissolved in the stock solution is vaporized and replenished with the gas in the gas phase portion. The deformation of the main body 2 can be prevented.

  By the way, as shown in FIG. 4, the spray-type product 1 of the present embodiment has the lower end of the tube 52 (see FIG. 1) immersed in the liquid phase portion of the undiluted solution in an upright use state. Thereby, the undiluted solution is appropriately taken into the space S1 from the tube 52 at the time of injection. However, for example, it is conceivable that the user erroneously performs an injection operation in an inverted state where it should be used in an upright state. In this case, the lower end of the tube 52 is located in the gas phase portion of the contents, and the gas in the gas phase portion (a mixture of the propellant and the outside air) leaks to the outside.

  However, in the spray-type product 1 of the present embodiment, the container body 2 is sealed by the pressurizing mechanism 3 and the propellant even when the gas in the gas phase portion leaks due to such an erroneous operation. Contains the first compressed gas having an Ostwald coefficient of 0.05 to 1.0 with respect to water at 25 ° C., the first compressed gas dissolved in the stock solution is vaporized and the gas phase portion is regenerated. Constitute. Therefore, even if the gas in the gas phase portion leaks due to an erroneous operation, the spray type product 1 is replenished with the propellant in the gas phase portion by the first compressed gas and can be used continuously. In particular, when pump injection is performed, the spray-type product 1 takes in the housing 5 from the container body 2 into the housing 5 after the pump injection. Here, since the conventional pump product is provided with an air introduction hole, a pressure drop in the container body is prevented by introducing the stock solution from the container body and simultaneously introducing outside air. However, in the spray-type product 1 of the present embodiment, no air introduction hole is formed. Therefore, as described above, the spray-type product 1 of the present embodiment appropriately revaporizes the first compressed gas dissolved in the stock solution to reconfigure the gas phase portion in the container body 2. As a result, the spray-type product 1 prevents the pressure drop in the container body 2 when the undiluted solution is supplied from the container body 2 to the housing 5 even though no air introduction hole is formed. The deformation of the main body 2 is prevented. As a result, the spray product 1 can be stably discharged to the end.

  As described above, the spray-type product 1 of the present embodiment is not provided with an air introduction hole in the housing 5. Therefore, when the undiluted solution in the container main body 2 is taken into the housing 5, the inside of the container main body 2 is in an airtight state. As a result, even when pump injection is performed, the propellant is not discharged to the outside. Thereby, the user can freely select continuous injection and pump injection by a simple operation of adjusting the operation amount of the trigger portion 42g (stem body 81). Moreover, the spray type product 1 does not require a separate member when switching between continuous injection and pump injection. Therefore, the spray-type product 1 has a simple configuration. Furthermore, the spray-type product 1 of the present embodiment is supposed to be used in an upright state, for example. However, when an injection operation is performed in an inverted state due to an erroneous operation, gas in a gas phase portion leaks to the outside. Alternatively, the gas phase portion can be reconstructed by vaporizing the first compressed gas dissolved in the stock solution. Therefore, the spray-type product 1 is replenished with the gas in the gas phase portion by the first compressed gas and can be used continuously. Further, the spray-type product 1 is not easily deformed by the negative pressure inside the container body 2 when pump injection is performed, and is not deformed. Therefore, the spray product 1 can be stably discharged to the end.

  In the spray type product 1 of the present embodiment, the check valve for preventing the flow from the stem into the container body is provided in the housing, and on the other hand, since the air introduction hole is not formed, the propellant is removed from the stem. Can not be filled. As an example of the manufacturing method of the spray-type product 1, the spray-type product 1 is prepared by filling a container body 2 with a stock solution and temporarily attaching a pressurizing mechanism 3 to the container body 2 to pressurize the container body 2. It can be manufactured by filling the propellant with a gap from the mechanism 3, attaching the pressurizing mechanism 3 to the container body 2, sealing it, and attaching it to the injection member 4. In addition, spray type product 1 replaces with the above-mentioned method, for example, mixes the 1st compressed gas or the 1st compressed gas, and the 2nd compressed gas with the stock solution of low temperature (for example, 5 ° C) in another pressure vessel. The mixed gas is saturated and dissolved, the stock solution in which the compressed gas is saturated and dissolved is filled into the container body 2, the pressurizing mechanism 3 is attached to the container body 2 and sealed, and then returned to room temperature (for example, 25 ° C.). Alternatively, a method may be employed in which part of the compressed gas that has been dissolved is vaporized to adjust the pressure in the container body. In this case, since it is not necessary to saturate and dissolve the compressed gas in the stock solution in the container body after sealing, it is not necessary to fill in the high pressure in anticipation of the compressed gas dissolved in the stock solution, and a container body having high pressure strength is used. You don't have to. Alternatively, the container body may be filled with the stock solution in which the compressed gas is saturated and dissolved, and then filled with the second compressed gas, and then the pressurizing mechanism may be attached to the container body and sealed to return to normal temperature.

[Production method of spray-type products]
A method for producing a spray-type product according to an embodiment of the present invention is a method for producing the above-described spray-type product, and a step of placing a stock solution in a pressure-resistant container and cooling to 5 ° C. or less, and spraying the stock solution The step of dissolving the agent in saturation, the step of filling the container with the stock solution in which the propellant is saturated and dissolving, attaching the pressure mechanism and sealing it, and returning to room temperature, the propellant is saturated and dissolved. Vaporizing part of the propellant from the stock solution and adjusting the pressure in the container body to 0.05 MPa (25 ° C., gauge pressure) or higher. A propellant contains the 1st compressed gas whose Ostwald coefficient with respect to the water in 25 degreeC is 0.05-1.0. The pressurizing mechanism includes a housing that stores the stock solution and a stem mechanism that pressurizes the stock solution in the housing. The housing is not formed with an air introduction hole for introducing air.

  Thus, according to the manufacturing method of the spray-type product of this embodiment, it has the process of preparing the pressure-resistant container different from a container main body, and cooling stock solution to 5 degrees C or less. After that, the first compressed gas is saturated and dissolved in the stock solution cooled to 5 ° C. or lower. Therefore, when such a stock solution is transferred to another container (container body) and then returned to room temperature, only a part of the first compressed gas that has been saturated and dissolved is vaporized, and the inside of the container body Pressurize to become pressure. In this state, a part of the first compressed gas remains dissolved in the stock solution.

  As a result, the conventional spray type product should be used in an upright state, for example. However, if an injection operation is performed in an inverted state due to an erroneous operation, there is a risk that the propellant in the gas phase portion may leak out. is there. However, the spray-type product produced by the manufacturing method of the present embodiment is dissolved in the stock solution even when the propellant (first compressed gas) is leaked due to an erroneous operation and the pressure in the container body is reduced. The first compressed gas is vaporized to reconstruct the gas phase portion. Therefore, even if the pressure in the container body is reduced, the spray-type product is replenished with gas in the gas phase portion by the first compressed gas and can be used continuously. Further, the spray-type product 1 is not easily deformed by the negative pressure inside the container body 2 when pump injection is performed, and is not deformed. Therefore, the spray product 1 can be stably discharged to the end.

  Further, as described above in the embodiment of the spray-type product, the spray-type product can continuously inject the stock solution by the pressure of the propellant when the stem is slid by a predetermined distance. Further, the spray-type product can be pumped by pressurizing the stock solution in the housing with the piston member by further sliding the stem. Further, the spray-type product has no air introduction hole formed in the housing. Therefore, the spray-type product does not communicate with the outside when the contents in the container main body are introduced into the housing after pump injection. As a result, the propellant is not discharged to the outside when pump injection is performed. Therefore, the spray-type product can freely select continuous injection and pump injection by a simple operation of adjusting the operating amount of the stem. Further, the spray-type product does not require a separate member when switching between continuous injection and pump injection. Therefore, the structure of the spray-type product is simple.

  Furthermore, the spray-type product obtained by the manufacturing method of this embodiment does not have an air introduction hole formed in the housing, and the inside of the container body can be sealed by attaching a pressurizing mechanism. Therefore, the spray-type product does not leak the propellant from the air introduction hole, vaporizes a part of the propellant from the stock solution in which the propellant is saturated and dissolved, and the pressure in the container body is 0.05 MPa or more. Can be adjusted. As a result, according to the manufacturing method of the present invention, the spray-type product does not have to be filled with the amount of propellant assuming the pressure after saturation dissolution in the container body, and the propellant must be saturated and dissolved in the stock solution in the container body. Therefore, the inside of the container main body does not become a high pressure, and for example, the material of the container main body can be reduced by reducing the thickness of the trunk portion.

  Moreover, in the manufacturing method of the spray type product of this embodiment, the propellant is not only the first compressed gas but also the second compressed gas having an Ostwald coefficient of 0.01 to 0.03 with respect to water at 25 ° C. Further, it may be included. In such a case, as described above in the embodiment of the spray-type product, the second compressed gas is less dissolved in the stock solution than the first compressed gas. Therefore, the second compressed gas is present more in the gas phase portion of the container body than the first compressed gas. As a result, when the propellant leaks to the outside due to misuse, a large amount of the second compressed gas is leaked, and leakage of the first compressed gas is suppressed. Therefore, even if the spray-type product is misused, the gas phase portion is replenished with the first compressed gas and can be used continuously. Further, the spray-type product 1 is not easily deformed by the negative pressure inside the container body 2 when pump injection is performed, and is not deformed. Therefore, the spray product 1 can be stably discharged to the end.

  The embodiment of the present invention has been described above with reference to the drawings. For example, the following modified embodiments may be employed for the spray product and the method for manufacturing the spray product of the present invention.

  (1) In the said embodiment, what was called a direct pressure type spray type product which pressurizes and injects the content in a housing with the stem mechanism provided with a piston member was illustrated. Instead of this, the so-called pressure accumulation type spray product may be used. FIG. 7 is a schematic cross-sectional view of a spray product 1a according to another embodiment of the present invention.

  The spray-type product 1a always urges the tubular housing 10a, an external stem 10b that moves up and down in the housing 10a, an internal stem 10c that is drivably housed in the external stem 10b, and the internal stem 10c upward. A spring member 10d is mainly provided.

  The housing 10a includes a cylindrical housing body 10e, a flange portion 10f provided at the upper end of the housing body 10e, and a small diameter portion 10g provided at the lower end of the housing body 10e. The interior of the housing body 10e includes a first cylindrical portion 10h that accommodates the outer stem 10b in a slidable manner, and a second cylindrical portion 10i that is smaller in diameter than the first cylindrical portion 10h and accommodates the spring member 10d. It is divided into and. On the lower surface of the flange portion 10f, a ring-shaped gasket 10j that provides a sealing action with the upper end of the container body 2a is provided. Further, a seal ring 101 is provided between the flange portion 10f and the lid 10k to seal between the two. A tube 10m is connected to the small diameter portion 10g. This housing 10a is also not formed with an air introduction hole for introducing air.

  The outer stem 10b has a cylindrical portion 10n to which the injection member 4a is attached at the upper end, and a first piston portion 10o that slides in the first cylindrical portion 10h of the housing body 10e at the lower portion of the cylindrical portion 10n. Yes.

  The internal stem 10c includes a rod-shaped portion 10q having a tapered surface 10p formed at the upper end and a cylindrical portion 10r provided at the lower portion of the rod-shaped portion 10q. A stock solution intake hole 10s is formed at the upper portion of the cylindrical portion 10r. A second piston portion 10t that slides in the second cylindrical portion 10i is formed at the lower portion. The outer surface of the stock solution intake hole 10s is closed by a cylindrical seal 10u, which is sealed when the stock solution in the housing 10a is pressurized, and communicated when the stock solution is introduced into the housing 10a. Acts as a stop valve.

  The space between the inner surface of the outer stem 10b and the inner stem 10c is not sealed, and serves as a path for the stock solution. When the injection member 4a is not operated, the internal stem 10c is pressed against the external stem 10b by the spring member 10d, and the tapered surface 10p of the internal stem 10c engages with the step portion 10v of the external stem 10b to provide a sealing action. The injection member 4a includes a mechanical breakup mechanism.

  In the spray-type product 1a of this modification, when the injection member 4a is pushed down, the outer stem 10b and the inner stem 10c are lowered. At this time, the volume of the cylindrical space between the housing main body 10e and the first piston portion 10o and the second piston portion 10t is reduced, and the stock solution intake hole 10s is sealed by the cylindrical seal 10u. , The internal pressure of the space rises. When the force that lowers the internal stem 10c due to the internal pressure of the space exceeds the urging force of the spring member 10d, the internal stem 10c descends relative to the external stem 10b. As a result, the seal portion of the tapered surface 10p is opened, and the stock solution in the space is sprayed from the injection hole 43a of the injection member 4a through the gap between the external stem 10b and the internal stem 10c and the open seal portion. Next, when the push-down of the injection member 4a is stopped, the inner stem 10c and the outer stem 10b are raised by the spring member 10d. At this time, a gap is formed between the cylindrical seal 10u and the stock solution intake hole 10s by the stock solution to which the suction force and the propellant pressure are applied to return the space to the original volume, and the stock solution is introduced into the housing 10a through the tube 10m. It is captured.

  In this pressure accumulation type pressurizing mechanism, when the pressure (opening pressure) when the internal stem 10c is separated from the external stem 10b and the space communicates with the outside is lower than the pressure in the container body 2a, the external stem The internal stem 10c is easily separated by the applied pressure of the first operation of 10b and the check valve (cylindrical seal 10u) is opened by the pressure of the propellant so that continuous injection can be performed, and the opening pressure is the pressure in the container body 2a. If the pressure is higher than the open pressure, the stock solution in the space is pump-injected when the pressure is increased by the first piston portion 10o by the second operation of the external stem 10b.

  Also in this modification, the lower end of the tube 10m is immersed in the stock solution. Therefore, when an injection operation is performed in an inverted state where a place to be used in an upright state is accidentally inverted, gas in a gas phase portion (a mixture of propellant and outside air) can be leaked to the outside from the lower end of the tube 10m. However, in the spray-type product 1a of this modification, even when the gas in the gas phase part leaks due to such an erroneous operation, the first compressed gas dissolved in the stock solution is vaporized and the gas phase part is removed. Reconfigure. Therefore, even if the gas in the gas phase portion leaks due to an erroneous operation, the spray-type product 1a is replenished with the propellant in the gas phase portion by the first compressed gas and can be used continuously. In addition, the spray-type product is unlikely to become a negative pressure in the container body when pump injection is performed, and is not deformed. Therefore, the spray-type product can be stably discharged to the end.

  Hereinafter, the present invention will be described more specifically with reference to examples. The present invention is not limited to these examples.

(Example 1)
Purified water cooled to 5 ° C. was filled in a pressure-resistant vessel that could be hermetically sealed, and then carbon dioxide gas was filled to make the inside of the pressure-resistant vessel airtight, so that the carbon dioxide gas was saturated and dissolved. Fill the container body (PET bottle, full volume 200 mL, barrel thickness 0.5 mm) with 150 mL of purified water in which carbon dioxide is saturated and dissolve, and screw the screw part of the pressurizing mechanism into the screw part of the container body. Combined and sealed. This was left still in a thermostatic chamber at 25 ° C. for one day, and the pressure in the container body (equilibrium pressure) was measured and found to be 0.26 MPa (gauge pressure).

(Comparative Example 1)
Fill the container body (PET bottle, full volume 200 mL, barrel thickness 0.5 mm) with 150 mL of purified water, screw the screw part of the pressurization mechanism into the screw part of the container body, and fill the gap with nitrogen gas And completely screwed to seal. This was left still for one day in a thermostatic chamber at 25 ° C., and the pressure (equilibrium pressure) in the container body was measured, and it was 0.45 MPa (gauge pressure).

(Example 2)
Purified water cooled to 5 ° C. was filled in a pressure-resistant vessel that could be hermetically sealed, and then carbon dioxide gas was filled to make the inside of the pressure-resistant vessel airtight, so that the carbon dioxide gas was saturated and dissolved. Fill the container body (PET bottle, full volume 200 mL, barrel thickness 0.5 mm) with 150 mL of purified water in which carbon dioxide is saturated and dissolve, and screw the screw part of the pressurizing mechanism into the screw part of the container body. The mixture was filled with nitrogen gas from the gap, and completely screwed to seal. This was left still for one day in a thermostatic chamber at 25 ° C., and the pressure (equilibrium pressure) in the container body was measured, and it was 0.45 MPa (gauge pressure).

(Example 3)
The pressure-resistant container that can be hermetically sealed is filled with purified water cooled to 5 ° C., then filled with a mixed gas of carbon dioxide and nitrogen gas (mass ratio: 42:58), and the inside of the pressure-resistant container is hermetically sealed. The mixed gas was dissolved in saturation. Fill the container body (PET bottle, full volume 200 mL, barrel thickness 0.5 mm) with 150 mL of purified water in which the mixed gas is saturated and dissolve, and screw the screw part of the pressurizing mechanism into the screw part of the container body. Combined and sealed. This was left still in a thermostatic chamber at 25 ° C. for one day, and the pressure (equilibrium pressure) in the container body was measured, and it was 0.33 MPa (gauge pressure).

  Using the spray-type products produced in Examples 1 to 3 and Comparative Example 1, the state of the container body when the pump injection was repeated was evaluated by the following method.

(Evaluation method of the state of the container body)
The spray type product was erected, and the spray member was pushed down and continuously sprayed for 5 seconds to confirm that aerosol spraying can be normally performed. The inside of the housing was filled with purified water (stock solution) and was in use. Subsequently, the container main body was inverted, the injection member was pushed down once and pump injection was performed, and the gas in the gas phase portion was discharged. Then, the container main body was returned to the upright state, the injection member was operated repeatedly, and the state of the container main body when the pump injection was repeated was evaluated.

  FIG. 8 is an external view photograph of the spray-type product of Example 1. FIG. 9 is a photograph of the appearance of the spray product of Example 1 after repeated pump injection. FIG. 10 is an external view photograph (enlarged view of the lower part of the container main body) of the spray-type product of Example 1 after repeated pump injection. As shown in FIGS. 8 to 10, the spray-type product of Example 1 shows no difference in the appearance of the container body even when the pump injection is repeated after the gas in the gas phase is discharged. And no deformation occurred. As shown in FIG. 10, when pump injection was repeated, the carbon dioxide dissolved in the stock solution (purified water) was dissolved, and bubbles were released. Thereby, the spray type product of Example 1, even when the gas in the gas phase part leaks by performing the pump injection in an inverted state, the carbon dioxide gas dissolved in the liquid phase part is dissolved, By constructing the gas phase portion again, the internal pressure of the container body did not drop too much and no deformation occurred despite the use of a thin container body. Similarly, in the spray type products of Example 2 and Example 3, even when the gas in the gas phase part leaks due to the pump injection in the inverted state, the carbonic acid dissolved in the liquid part Since the gas melted and the gas phase portion was formed again, the internal pressure of the container body did not drop too much, and the container body did not deform. Further, in these spray products of Example 2 and Example 3, nitrogen gas is used in combination as the second compressed gas. Nitrogen gas is easier to form a gas phase than carbon dioxide, which is the first compressed gas, and hardly dissolves in the stock solution. Therefore, in the spray products of Example 2 and Example 3, the amount of carbon dioxide constituting the gas phase portion is smaller than the amount of carbon dioxide gas constituting the gas phase portion in the spray product of Example 1 (gas (The phase part is composed not only of carbon dioxide gas but also nitrogen gas). Thereby, in the spray type products of Example 2 and Example 3, more carbon dioxide gas is dissolved in the liquid phase portion. As a result, even if the above-described erroneous operation is performed, the spray-type products of Example 2 and Example 3 are easily reconstituted in the gas phase part by the carbon dioxide gas dissolved in the liquid phase part, It was found that even though a thin container body was used, deformation was less likely to occur.

  On the other hand, FIG. 11 is an appearance photograph of the spray-type product of Comparative Example 1 after the pump injection is repeated after the gas in the gas phase portion is discharged. As shown in FIG. 11, the spray-type product of Comparative Example 1 filled with nitrogen gas as a propellant was deformed when the pump injection was repeated and the internal pressure of the container body decreased to a negative pressure. .

DESCRIPTION OF SYMBOLS 1, 1a Spray type product 10a Housing 10b External stem 10c Internal stem 10d Spring member 10e Housing main body 10f Flange part 10g Small diameter part 10h 1st cylindrical part 10i 2nd cylindrical part 10j Gasket 10k Cover 10l Seal ring 10m Tube 10n Cylindrical form Part 10o Piston part 10p Tapered surface 10q Rod-like part 10r Tubular part 10s Stock solution intake hole 10t Piston part 10u Cylindrical seal 10v Step part 2, 2a Container body 21 Body part 21a Bottom part 21b Body part 21c Shoulder part 22 Neck part 3 Pressure mechanism 4, 4a Injection member 41 Injection nozzle 41a Rotating shaft 41b Nozzle passage 42 Operation portion 42a Lever support portion 42b Lever 42c Main body portion 42d Support arm 42e Annular groove 42f Rotating shaft 42g Trigger portion 43, 43a Tip nozzle 43a injection hole 43b nozzle tip 5 housing 51 housing body 51a flange portion 51b small diameter portion 51c stock solution intake hole 51d contact step portion 52 tube 53 gasket 54 check valve mechanism 54a recess portion 54b ball 6 valve body 7 contact member 71 top surface portion 72 Abutting leg portion 8 Stem mechanism 81 Stem body 82 Piston member 83 Spring member 84 Internal stem 84a Hook-shaped portion 84b Cylindrical portion 84c Abutting groove 84d Notch groove 85 External stem 85a External stem passage 85b Skirt portion 85c Cylindrical portion 85d Abutting step part 86 Inner sliding part 86a Upper inner sliding part 86b Lower inner sliding part 87 Outer sliding part 87a Upper outer sliding part 87b Lower outer sliding part 88 Connecting ring 9 Screw cap 9a Top plate 9b side Peripheral part 9c Mounting part 9d Cover part 9e Engaging part A1 Flow S1 space of liquid

Claims (5)

A container body filled with contents containing a stock solution and a propellant, and a pressurizing mechanism attached to the container body,
The propellant includes a first compressed gas having an Ostwald coefficient with respect to water at 25 ° C. of 0.05 to 1.0,
The pressurizing mechanism includes a housing that stores the stock solution, and a stem mechanism that pressurizes the stock solution in the housing,
The housing is a spray-type product in which air introduction holes for introducing air are not formed.   The spray-type product according to claim 1, wherein the propellant further comprises a second compressed gas having an Ostwald coefficient of 0.01 to 0.03 with respect to water at 25C. The first compressed gas is carbon dioxide;
The spray product according to claim 2, wherein the second compressed gas is nitrogen gas or air. Placing the stock solution in a pressure vessel and cooling to 5 ° C. or lower;
A step of saturating and dissolving the propellant in the stock solution;
Filling the container body with the stock solution in which the propellant is saturated and dissolved, and attaching and sealing a pressurizing mechanism;
By returning to normal temperature, a part of the propellant is vaporized from the stock solution in which the propellant is saturated and dissolved, and the pressure in the container body is adjusted to 0.05 MPa (25 ° C., gauge pressure) or more. Including the steps of:
The propellant includes a first compressed gas having an Ostwald coefficient with respect to water at 25 ° C. of 0.05 to 1.0,
The pressurizing mechanism includes a housing that stores the stock solution, and a stem mechanism that pressurizes the stock solution in the housing,
The said housing is a manufacturing method of a spray type product in which the air introduction hole for introducing air is not formed.   The said propellant is a manufacturing method of the spray type product of Claim 4 which further contains the 2nd compressed gas whose Ostwald coefficient with respect to the water in 25 degreeC is 0.01-0.03.