JP6927769B2 - Spray products - Google Patents

Description

The present invention relates to a spray type product. More specifically, the present invention relates to a spray-type product capable of obtaining a stable injection state without deforming the container even after continued use.

Conventionally, there are known pump products that pressurize the contents by injection operation and then inject. In such a pump product, air is generally introduced from the outside every time the injection is finished, and the inside of the container is returned to the atmospheric pressure. Therefore, since no pressure is applied to the container body, a thin-walled synthetic resin container body is used.

Further, Patent Document 1 discloses a pressurized product in which a liquid composition containing a hydrocarbon having 4 to 5 carbon atoms and a compressed gas are filled in a resin container. The vapor pressure of this hydrocarbon at 35 ° C. is 0.03 to 0.18 MPa.

JP-A-2002-37362

The above-mentioned general pump product has, for example, an air introduction hole for introducing air from the outside. Therefore, since a general pump product communicates with the outside through an air introduction hole, the contents are easily oxidized and the storage stability is apt to be inferior. Further, when the air introduction hole is not formed in such a general pump product, the pressure in the container drops when the stock solution to be injected next time after injection is introduced into the housing, and the container body is deformed. Since the pump product uses a thin-walled container body, its deformation becomes irregular and the injection state is not stable.

Further, the pressurized product described in Patent Document 1 includes an aerosol valve that injects the contents by utilizing the pressure of the compressed gas. Since such a valve does not pressurize the liquid composition itself, when the amount of the liquid composition decreases due to use, the pressure decreases and the injection state tends to change.

Therefore, although it is in the form of injecting by pressurizing the contents like a pump product, the air introduction hole is not formed and the container is not deformed even if it is used continuously, and a stable injection state is obtained. There are no known spray-type products that can be used.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a spray-type product capable of obtaining a stable injection state without deforming the container even if it is continuously used. And.

The present invention that solves the above problems mainly includes the following configurations.

(1) A container body filled with contents containing a stock solution and a propellant and a pressurizing mechanism attached to the container body are provided, and the propellant has a pressure of 0.05 to 0 at 35 ° C. It is a liquefied gas having a pressure of 2 MPa (gauge pressure), and the pressurizing mechanism includes a housing for storing the contents and a stem mechanism for pressurizing the contents in the housing, and the housing introduces air. A spray-type product that does not have an air introduction hole for it.

According to such a configuration, the spray type product can pressurize the contents by the pressurizing mechanism and inject. At this time, in the spray-type product, since the contents are filled in an airtight container in which the housing does not have an air introduction hole, for example, after injection, the propellant vaporizes in the container body according to the vapor pressure, and the container body. The internal pressure inside can be maintained within a specific range. Therefore, the spray-type product tends to keep the container internal pressure constant and does not deform even if it is used continuously. Further, in the spray type product, even when the amount of contents is reduced due to use, a part of the propellant is vaporized in the jet container according to the vapor pressure, so that a stable jet state can be easily obtained until the final stage. .. Further, since the contents are filled in the airtight container, the spray-type product has excellent storage stability and the propellant is less likely to leak. In addition, the content containing a specific amount of propellant is pressurized by a pressurizing mechanism and jetted. According to such an injection form, the contents can be ejected over a wide range in the form of mist. In addition, since the conventional pump product does not contain a propellant, it is not possible to obtain a cooling sensation due to the vaporization of the contents. However, since the spray-type product of the present invention contains the propellant, it is cooled by the heat of vaporization. It is easy to get a feeling.

(2) The spray-type product according to (1), wherein the propellant is contained in the contents in an amount of 5 to 40% by mass.

According to such a configuration, the spray-type product tends to have the effect of keeping the container internal pressure constant, and even if the amount of contents is reduced by use, the container internal pressure does not become a negative pressure lower than the atmospheric pressure. , Deformation does not occur even if a thin container body is used.

(3) The spray-type product according to (1) or (2), wherein the content further contains a pressurizing agent, and the internal pressure of the injection container at 35 ° C. is 0.1 to 0.5 MPa.

According to such a configuration, the spray-type product can also continuously inject the contents.

(4) The stem mechanism includes a stem and a piston member, and when the first operation of sliding a predetermined distance is performed, the stem communicates with the outside and the inside of the container body, and the piston member The spray-type product according to (3), wherein when a second operation is performed in which the stem is further slid by a predetermined distance, the contents in the housing are pressurized.

According to such a configuration, the spray type product can continuously inject the contents by the pressure of the propellant when the first operation is performed, and when the second operation is performed, the contents are continuously injected by the pressurization by the piston member. The contents can be sprayed under pressure. Further, since the contents are filled in an airtight container, the propellant is not discharged to the outside. Therefore, the spray-type product can arbitrarily switch between continuous injection and pressurized injection.

According to the present invention, it is possible to provide a spray-type product in which the container does not deform even if it is continuously used and a stable injection state can be obtained.

FIG. 1 is a schematic cross-sectional view of a spray-type product according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the pressurizing mechanism of the spray-type product according to the embodiment of the present invention. FIG. 3 is a cross-sectional view of a pressurizing mechanism in which the spray-type product according to the embodiment of the present invention is first operated and 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 according to the embodiment of the present invention, in which the spray-type product is displaced to the pump injection state in which the pump injection is performed by the second operation. FIG. 5 is a cross-sectional view of a pressurizing mechanism in which the spray-type product according to the embodiment of the present invention is secondly operated to perform pump injection and is displaced to a pump injection state.

[Spray product]
A spray product according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic cross-sectional view of the spray-type product 1 of the present embodiment. FIG. 2 is a cross-sectional view of the pressurizing mechanism 3 of the spray-type product 1 of the present embodiment shown in FIG. The spray-type product 1 shown in FIGS. 1 and 2 is in a state in which 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 containing an undiluted solution and a propellant, a pressurizing mechanism 3 attached to the container body 2, and an injection member attached to the pressurizing mechanism 3. Mainly equipped with 4. The propellant is a liquefied gas having a pressure of 0.03 to 0.2 MPa (gauge pressure) at 35 ° C. The pressurizing mechanism 3 mainly includes a housing 5 for storing the contents and a stem mechanism 8 for pressurizing the contents in the housing 5. The housing 5 is not formed with an air introduction hole for introducing air. Hereinafter, the contents and the apparatus configuration of the spray-type product 1 of the present embodiment will be described.

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

-Undiluted solution The undiluted solution is a liquid component filled in the container body 2. The undiluted solution contains conventionally known components. For example, the undiluted solution contains water, alcohol, oil, surfactants, powders, and other active ingredients (moisturizers, vitamins, UV absorbers, refreshing agents, styling agents, deodorant ingredients, disinfectants, pests). Contains repellents, pesticides, fragrances, pigments, etc.).

The method for preparing the undiluted solution is not particularly limited. As an example, the undiluted solution can be prepared by dissolving, emulsifying and dispersing each of the above-mentioned components (active ingredient, surfactant, oil, powder, etc.) in a solvent such as water or alcohol.

-Injector The propellant is filled in the container body 2 to which the pressurizing mechanism 3 having no air introduction hole is formed. The propellant is blended in the container body 2 to pressurize the contents and introduce them into the pressurizing mechanism 3, and at the time of jetting, the propellant is made finer by vaporization and the foamability is improved. At this time, in the spray-type product 1, even when the amount of the contents is reduced by use, a part of the propellant is vaporized in the container body 2 and the contents can be appropriately pressurized. Further, since the spraying agent is contained, the spray type product 1 does not easily decrease the internal pressure of the injection container 2 even when the use is continued, and the container body 2 is not deformed. As a result, the spray-type product 1 tends to obtain a stable injection state until the final stage. Further, since the conventional pump product does not contain a propellant, it is not possible to obtain a cooling sensation due to the vaporization of the contents. It is easy to get a feeling of cooling.

As the propellant, a liquefied gas having a pressure at 35 ° C. of 0.05 to 0.2 MPa (gauge pressure) is used. The liquefied gas is not particularly limited. As an example, the liquefied gas is normal pentane, isopentane, normal butane, isobutane, and a mixture thereof, an aliphatic hydrocarbon having 4 to 5 carbon atoms, 1-chloro-3,3,3-trifluoro. Hydrofluoroolefins such as propene, and mixtures thereof. The pressure of the liquefied gas at 35 ° C. may be 0.05 MPa (gauge pressure) or more, and preferably 0.07 MPa (gauge pressure) or more. The pressure of the liquefied gas at 35 ° C. may be 0.2 MPa (gauge pressure) or less, and preferably 0.18 MPa (gauge pressure) or less. When the pressure of the liquefied gas at 35 ° C. is less than 0.05 MPa (gauge pressure), the spray-type product becomes difficult to stabilize the injection state when pump injection is performed. On the other hand, when the pressure of the liquefied gas at 35 ° C. exceeds 0.2 MPa (gauge pressure), the spray-type product tends to require a strong container body because the pressure tends to increase at a high temperature.

The content of the propellant is not particularly limited. As an example, the propellant is preferably 5% by mass or more, and more preferably 7% by mass or more in the contents. Further, the propellant is preferably 40% by mass or less, and more preferably 35% by mass or less in the contents. When the content of the propellant is less than 5% by mass, it becomes difficult to introduce the contents into the housing when the amount of the contents becomes small, and the container body tends to be easily deformed. On the other hand, when the content of the propellant exceeds 40% by mass, the pressure tends to increase when the container is placed at a high temperature, and the thin-walled container body tends to be easily deformed.

The contents of the spray-type product 1 of the present embodiment preferably further contain a pressurizing agent. By containing the pressurizing agent, the spray-type product 1 can easily continuously inject the contents by operating the trigger portion 42g, which will be described later, to first operate the stem mechanism 8. The pressurizing agent is filled in the container body 2 together with the contents, and most of the pressurizing agent is present in the gas phase in the container body 2 in the container body 2 to pressurize the contents. The pressurizing agent is not particularly limited. As an example, the pressurizing agent is nitrogen gas, carbon dioxide gas, nitrous oxide gas, compressed air and the like.

The filling amount of the pressurizing agent is not particularly limited. As an example, the filling amount of the pressurizing agent is preferably an amount such that the internal pressure of the container body 2 at 35 ° C. is 0.1 MPa or more, and more preferably 0.2 MPa or more. The filling amount of the pressurizing agent is preferably an amount such that the internal pressure of the injection container 2 at 35 ° C. is 0.5 MPa or less, and more preferably 0.4 MPa or less. When the filling amount is less than the amount at which the internal pressure of the container body 2 becomes 0.1 MPa, it is difficult for the spray-type product 1 to continuously inject the contents. On the other hand, when the filling amount is such that the internal pressure of the container body 2 exceeds 0.5 MPa, the spray-type product 1 tends to be easily deformed and the operability tends to be deteriorated.

<Device configuration>
Next, the apparatus configuration of the spray type product 1 for injecting the above contents will be described. The device configuration of the spray-type product 1 shown below is an example. That is, the apparatus configuration of the spray-type product 1 of the present embodiment includes a container body 2 and a pressurizing mechanism 3, and the pressurizing mechanism 3 includes a housing 5 in which an air introduction hole is not formed and a stem mechanism 8. As a result, the structure may be such that the contents can be pressurized and sprayed.

(Container body 2)
The container main body 2 is a container for filling the contents, and has a bottomed tubular main body 21 and a tubular neck portion having a diameter smaller than that of the main body 21 and integrally provided on the upper part of the main body 21. 22 and is included. An opening is formed in the upper part of the neck portion 22, and a screw portion for attaching the cap 9 is formed on the outer peripheral surface. The opening is a filling port when the undiluted solution is filled, and is closed by the pressurizing mechanism 3 after the undiluted solution is filled.

The material constituting the container body 2 is not particularly limited. Examples of the material constituting the container body 2 include polyethylene terephthalate, synthetic resins such as polyethylene and polypropylene, glass, and metals such as aluminum and tinplate. When a synthetic resin is used, for example, an ultraviolet absorber may be contained in order to prevent deterioration of the undiluted solution due to sunlight, and when the content contains the above-mentioned pressurizing agent, the permeation of the pressurizing agent is prevented. Therefore, carbon, silica, or the like may be vapor-deposited on the outer surface or the inner surface of the injection container 2. When a synthetic resin is used, the wall thickness of the body portion is preferably 0.1 to 0.5 mm, more preferably 0.15 to 0.4 mm. When the wall thickness of the body portion is less than 0.1 mm, the container body 2 tends to be easily deformed by the pressure or heat of the contents. On the other hand, when the wall thickness of the body portion exceeds 0.5 mm, the container body 2 tends to require a large amount of synthetic resin.

(Pressure mechanism 3)
The pressurizing mechanism 3 is a member for sealing the inside of the container body 2 and taking in the contents from the container body 2 to pressurize the contents. The pressurizing mechanism 3 mainly includes a tubular housing 5, a valve body 6 housed in the housing 5, a contact member 7 for controlling the upward displacement of the piston member described later, and a screw cap 9. Prepare for. The valve body 6 includes a stem mechanism 8 that is slidably housed in the housing 5 in the vertical direction. The pressurizing mechanism 3 can be displaced from the non-injection state to the pump injection state in which pump injection is performed. Further, the pressurizing mechanism 3 can be displaced from the non-injection state to the continuous injection state in which the contents are continuously injected.

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

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

A flange portion 51a protruding outward in the radial direction is provided around the upper end of the housing body 51. The flange portion 51a is placed on the upper surface of the opening of the container body 2 and is a portion for positioning the housing body 51. The size (outer diameter) of the flange portion 51a is the outer diameter of the neck portion 22 of the container body 2. Approximately matches. A gasket 53 is attached to the lower surface of the flange portion 51a, and the inside of the container can be airtightly 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. When the housing body 51 is positioned by the flange portion 51a, the outer peripheral wall of the housing body 51 and the inner peripheral wall of the neck portion 22 of the container body 2 are separated from each other.

A small diameter portion 51b having a diameter smaller than that of the housing body 51 is formed near the lower end of the housing body 51. The tube 52 is inserted into the small diameter portion 51b. The tube 52 is a relatively long cylindrical member extending to the vicinity of the inner bottom of the injection container 2, and is immersed in one end inserted into the small diameter portion 51b and the contents in the container body 2 to take in the contents. Has an other end in which an opening is formed.

At the center of the small diameter portion 51b, a content intake hole 51c for introducing the content to be taken in from the container main body 2 via the tube 52 into the space S1 of the housing main body 51 is formed. A check valve mechanism 54 is provided at a connection point between the content intake hole 51c and the space S1.

The check valve mechanism 54 is a valve mechanism for taking in the contents from the container body 2 to the space S1 in one direction, and opens and closes the contents taking-in hole 51c as appropriate. The check valve mechanism 54 has 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. Includes 54b and. When the injection member 4 is not operated, the ball 54b closes the communication point between the content intake hole 51c and the space S1 by its own weight. On the other hand, when the pressurizing mechanism 3 is in the pump injection state in which the pump injection described later is performed, the ball 54b is lifted by the liquid flow generated when the contents in the container body 2 are taken into the space S1 and the contents are lifted. The communication point between the object 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 inside the container body 2. The screw cap 9 is provided with a disk-shaped top plate 9a having an opening formed in the center, a side peripheral portion 9b provided downward from the outer peripheral edge of the top plate 9a, and an upward portion from the inner peripheral edge of the top plate 9a. It has a cylindrical mounting portion 9c. A screw portion is formed on the inner surface of the side peripheral portion 9b, and is screwed to the screw portion of the neck portion of the container body. The mounting portion 9c includes a cover portion 9d that is radially inwardly provided on the inner peripheral wall, and an engaging portion 9e that is provided so as to project radially outward on the outer peripheral wall. The cover portion 9d is a portion for positioning the contact member 7 described later with respect to the housing main body 51. The engaging portion 9e is a portion for attaching the injection member 4 to the screw cap 9.

・ Valve body 6
The valve body 6 is a member for sending the contents taken in from the container body 2 to the injection member 4, and includes a stem mechanism 8 slidably housed in the housing body 51 in the vertical direction. The stem mechanism 8 includes a stem main body 81, a piston member 82 that slides in the housing 5 in the vertical direction in cooperation with the stem main body 81, and a spring member 83 that biases the stem main body 81 upward.

The stem body 81 is provided on the inner stem 84, which forms a seal portion for preventing the contents from being jetted to the outside from the space S1 by abutting on the piston member 82 in the non-injection state, and on the upper portion of the inner stem 84. It is composed of an external stem 85 that is mounted and that appears and disappears from an opening formed at the upper end of the housing body 51. The inner stem 84 and the outer stem 85 are provided coaxially, and integrally slide in the housing body 51 in the vertical direction.

The internal stem 84 has a substantially bowl-shaped downward shape, and has a bowl-shaped portion 84a having a relatively large diameter to which the upper end of the spring member 83 is connected to the lower surface, and a bowl-shaped portion 84a having a diameter smaller than that of the bowl-shaped portion 84a. Includes a cylindrical cylindrical portion 84b extending upward from the center of the upper surface.

An annular contact groove 84c is formed at the connection point between the upper surface of the bowl-shaped portion 84a and the cylindrical portion 84b so that the lower end of the inner sliding portion 86 of the piston member 82 abuts. The upper end of the spring member 83 is inserted into the lower surface of the bowl-shaped portion 84a. A notch groove 84d extending in the vertical direction of the bowl-shaped portion 84a is formed on the outer peripheral edge of the bowl-shaped portion 84a. Further, of the lower surface of the bowl-shaped portion 84a, the vicinity of the outer peripheral edge abuts on the contact step portion 51d that bulges inward in the radial direction from the inner peripheral surface of the housing body 51 in the pump injection state described later. The stem body 81 comes into contact with the contact step portion 51d in the pump injection state to prevent downward sliding.

The outer stem 85 is formed with an outer stem inner passage 85a through which the contents taken into the housing 5 further pass, and the diameter of the outer stem 85b is reduced from the upper end of the truncated cone-shaped skirt portion 85b to the upper side. Includes a tubular portion 85c. The upper end of the tubular portion 85c protrudes from the container body 2, and the injection member 4 is attached.

On the inner peripheral surface of the skirt portion 85b, a contact step portion 85d that is pressed against the piston member 82 when the pressurizing mechanism 3 is displaced from the non-injection state described later to the pump injection state is formed. 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 and the outer peripheral wall of the cylindrical portion 84b are separated from each other. The upper inner sliding portion 86a of the piston member 82, which will be described later, is inserted into the space formed so separated.

The inner diameter of the tubular portion 85c is about 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 tubular portion 85c.

The piston member 82 is a member for partitioning the space S1 inside the housing main body 51, and slides in the housing main body 51 in the vertical direction in cooperation with the inner stem 84 and the outer 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 an inner sliding portion 86 and an outer side. Includes a connecting ring 88 that connects the sliding portion 87. The connecting ring 88 connects the inner sliding portion 86 and the outer sliding portion 87 near the center.

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

The upper end of the upper inner sliding portion 86a is inserted into the 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 pumps from the non-injection state. When the outer stem 85 and the inner stem 84 are slid downward when displaced to the state, they are inserted deeper into the space formed by the outer peripheral wall of the inner stem 84 and the inner peripheral wall of the outer stem 85. When the piston member 82 is displaced from the non-injection state to the pump injection state, the upper inner sliding portion 86a comes into contact with the contact step portion 85d, and then slides downward integrally with the stem body 81. do.

In the lower inner sliding portion 86b, when the inner stem 84 is urged upward by the spring member 83, the vicinity of the contact groove 84c of the bowl-shaped portion 84a and the lower end abut each other to form a seal portion, and the lower inner sliding portion 86b forms a seal portion in the upward direction. Be urged to.

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

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

Examples of the material constituting the piston member 82 include elastic materials 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 arranged in the housing body 51 in a compressed state, and urges 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. As a result, even when the ball 54b is pushed upward by the liquid flow when the contents are taken in from the container body 2 in the pump injection state described later, the ball 54b is stopped by the lower end of the spring member 83. NS.

The valve body 6 configured in this way is fixed to the container body 2 by screwing the screw cap 9 into the container body 2.

・ Contact member 7
The contact member 7 is fitted into the opening of the housing body 51 and comes into contact with a step portion formed between the skirt portion 85b and the tubular portion 85c of the outer stem 85 to position the stem body 81 and further position the piston. It is a member that positions the piston member 82 in contact with the upper end of the upper outer sliding portion 87a of the member 82.

The contact member 7 includes a top surface portion 71 that comes into contact with the back surface of the cover portion 9d of the screw cap 9, and a tubular 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 51a of the housing body 51. As a result, the contact member 7 is positioned. The lower end of the contact leg portion 72 abuts on 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 tubular body, and includes one end connected to the upper end of the tubular portion 85c and the other end connected to the tip nozzle 43. The outer peripheral wall of the injection nozzle 41 is provided with a rotation shaft 41a that is pivotally supported by a bearing formed on the side wall of the lever 42b, which will be described later.

The tip nozzle 43 is a jig for adjusting the injection direction, injection shape, etc. of the contents, and has one end connected to the injection nozzle 41 and the other end formed with an injection hole 43a into which the contents are injected. To be equipped with. In the spray-type product 1 of the present embodiment, the tip nozzle 43 is equipped with a nozzle tip 43b provided with a mechanical break-up mechanism. The mechanical break-up mechanism is a mechanism for uniformly spraying the contents over a wide range, and has grooves (channels) for applying a turning force to the contents to make them finer to an appropriate size.

The operation unit 42 is a portion for sliding the stem main body 81 to inject the contents stored in the space S1, and is a shaft on the lever support portion 42a mounted on the mounting portion 9c and the lever support portion 42a. Includes the supported lever 42b.

The lever support portion 42a includes a cylindrical main body portion 42c and a support arm 42d protruding from the side wall of the main body portion 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 mounted on the screw cap 9 by inserting the mounting portion 9c into the annular groove 42e. A rotation shaft 42f pivotally supported by a bearing (not shown) provided on a lever 42b, which will be described later, is formed in the vicinity of the upper end of the support arm 42d.

The lever 42b is a portion operated by the user at the time of injection, and includes a trigger portion 42g operated by the user at the time of injection. The injection member 4 pushes down the injection nozzle 41 downward when the user pulls 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 contents using the spray-type product 1 having the above configuration will be described with reference to FIGS. 3 to 5 in addition to FIGS. 1 and 2. FIG. 3 is a schematic enlarged view of the pressurizing mechanism 3 displaced to the 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 to the pump injection state in which the pump is injected. FIG. 5 is a schematic enlarged view of the pressurizing mechanism 3 displaced to the pump injection state in which pump injection is performed. The pressurizing mechanism 3 may be displaced from the non-injection state to the pump injection state after passing through the continuous injection state described above. However, the spray-type product 1 of the present embodiment only needs to be able to perform pump injection, and displacement to the continuous injection state is not essential. Therefore, the pressurizing mechanism 3 of the present embodiment is substantially not displaced to the continuous injection state (or to the continuous injection state for a short time) by operating the injection member 4 in a short time by, for example, the user. After the displacement of), it may be displaced from the non-injection state to the pump injection state.

(Non-injection state)
First, in the non-injection state (state before injection) in which the contents are not injected, the inner stem 84, the outer stem 85, and the piston member 82 are urged upward by the spring member 83, as shown in FIG. Be maintained. 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 of the inner stem 84. Therefore, the contents are 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 the non-injection state to the continuous injection state in which continuous injection is performed. Specifically, when the injection nozzle 41 is pushed down somewhat downward by the user operating the trigger portion 42 g, the internal stem 84 and the external stem 85 are integrated and somewhat downward (for example, 1 to 2 mm). ) Sliding (first operation). At this time, the piston member 82 does not move because it does not come into contact with the external stem 85. 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 container body 2 and the outside are communicated with each other. Since the spray-type product 1 of the present embodiment contains a propellant (liquefied gas having a specific pressure) in the content, the content lifts the ball 54b upward according to the pressure difference from the outside. , Supply to space S1. Further, the contents pass through the gap between the lower inner sliding portion 86b and the contact groove 84c and the passage 85a in the outer stem, and are continuously injected from the injection hole 43a (see FIG. 1). In FIG. 3, the arrow A1 indicates the flow of the contents taken in from the container body 2. The continuous injection state is particularly stable when the content contains a pressurizing agent and the internal pressure of the container body 2 is adjusted to 0.1 to 0.5 MPa.

In the continuous injection state, the contents are sprayed over a wide range in the form of a mist due to the influence of the pressure-filled propellant and the preferably blended pressurizer. Further, in the spray type product 1, the required amount can be continuously injected by maintaining the operated state without repeatedly operating the trigger portion 42 g.

(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, the user further operates the trigger portion 42g, so that 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 portion 85d of the skirt portion 85b comes into contact with the upper end of the upper inner sliding portion 86a of the piston member 82. Then, the internal stem 84, the external stem 85, and the piston member 82 are integrally slid downward (for example, 3 to 10 mm, second operation). As a result, the volume of the space S1 of the spray-type product 1 is reduced. At this time, the ball 54b sinks due to the downward urging due to the decrease in the volume of the space S1 and closes the content intake hole 51c. Further, the contents (not shown) stored in the space S1 are pressurized, pass through the gap between the lower inner sliding portion 86b and the contact groove 84c, and the passage inside the outer stem 85a, and pass through the injection hole 43a (not shown). (See FIG. 1).

After that, when the operation of the trigger portion 42g by the user is stopped, the return operation and the operation of incorporating the contents into the space S1 are started. That is, the urging force of the spring member 83 pushes the inner stem 84, the outer stem 85, and the piston member 82 upward to return to their original positions, and the space S1 and the outside are cut off again. The upward sliding of the inner stem 84, the piston member 82, and the outer stem 85 is stopped by the upper end of the upper outer sliding portion 87a coming into contact with the lower end of the abutting leg portion 72 of the abutting member 7. ..

In this way, when the inner stem 84, the outer stem 85, and the piston member 82 are pushed up integrally by the spring member 83, the communication between the space S1 and the outside is cut off. Therefore, the ball 54b also moves upward to open the communication point between the content intake hole 51c and the space S1, and a certain amount of the content is newly taken into the space S1 from the container body 2. Since the spray-type product 1 of the present embodiment includes the check valve mechanism 54, the captured contents are unlikely to flow back. As a result, the spray-type product 1 can easily inject an appropriate amount of the contents, and a stable effect can be easily obtained. Further, as the contents are taken in from the container body 2, the internal pressure inside the container body 2 decreases. However, such a decrease in internal pressure is compensated for by vaporizing the propellant according to the vapor pressure. As a result, in the spray-type product 1, the internal pressure of the container body 2 can be maintained within a certain range, and the deformation of the container body 2 can be prevented.

As described above, in the spray-type product 1 of the present embodiment, since the internal pressure of the injection container 2 is adjusted to a specific range, the internal pressure of the container is easily kept constant even if the use is continued, and the internal pressure of the container is not deformed. Further, since the air introduction hole is not formed, the spray type product 1 has high airtightness, excellent storage stability, and the propellant is less likely to leak. Further, the content containing a specific amount of the propellant is pressurized and jetted by the pressurizing mechanism 3. According to such an injection form, the contents can be ejected over a wide range in the form of mist. In addition, since the conventional pump product does not contain the propellant, it is not possible to obtain a cooling sensation due to the vaporization of the contents, but the spray-type product 1 of the present embodiment contains the propellant and therefore vaporizes. It is easy to get a feeling of cooling by heat. Further, in the spray type product 1, even when the amount of the contents is reduced due to use, a part of the propellant is vaporized in the container body 2 and the contents are appropriately pressurized and sprayed. can. As a result, the spray-type product 1 tends to obtain a stable injection state until the final stage.

The manufacturing method of the spray-type product 1 of the present embodiment is not particularly limited. As an example, in the spray-type product 1, the undiluted solution is filled in the container body 2, the pressure mechanism 3 is attached to the container body 2 to seal the product, and the injection agent is filled from the pressure mechanism 3 to form the injection member 4. Can be manufactured by mounting. The pressurizing agent can be filled by the pressurizing mechanism after the propellant is filled.

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

<Example 1>
The container body (made of polyethylene terephthalate, body thickness: 0.3 mm) shown in FIG. 1 is filled with 80 g (80% by mass) of an aqueous stock solution 1 prepared according to the following formulation, and then a propellant having the following formulation. 1 was filled with 20 g (20% by mass), and a pressurizing mechanism shown in FIG. 1 was attached to the mouth of the container body to seal the container. Further, the injection member shown in FIG. 1 was attached to manufacture a spray type product.

(Aqueous undiluted solution 1)
Polyoxyethylene alkyl ether (* 1) 1.0
Ethanol 20.0
Isopropyl myristate 0.1
Phenoxyethanol 0.5
Purified water 78.4
Total 100.0 (mass%)
* 1: NIKKOL BT-7 (trade name), manufactured by Nikko Chemicals Co., Ltd.

(Injection agent 1)
Isopentane 75.0
Isobutane 25.0
Total 100.0 (mass%)
Vapor pressure at 35 ° C: 0.12 MPa

<Example 2>
A spray-type product was produced in the same manner as in Example 1 except that 90 g (90% by mass) of the aqueous stock solution 1 was filled and then 10 g (10% by mass) of the propellant 1 was filled.

<Example 3>
A spray-type product was produced in the same manner as in Example 1 except that 70 g (70% by mass) of the aqueous stock solution 1 was filled and then 30 g (30% by mass) of the propellant 1 was filled.

<Example 4>
A spray-type product was produced in the same manner as in Example 1 except that the propellant 2 having the following formulation was used.

(Injection agent 2)
Isopentane 75.0
Normal Butane 25.0
Total 100.0 (mass%)
Vapor pressure at 35 ° C: 0.09 MPa

<Example 5>
A spray-type product was produced in the same manner as in Example 1 except that the pressure inside the container was adjusted to 0.3 MPa by further filling with nitrogen gas.

<Example 6>
A spray-type product was produced in the same manner as in Example 1 except that the pressure inside the container was adjusted to 0.4 MPa by further filling with nitrogen gas.

<Comparative example 1>
A spray-type product was produced in the same manner as in Example 1 except that 100 g of the aqueous stock solution 1 was filled and no propellant was filled.

<Comparative example 2>
A spray-type product was produced in the same manner as in Example 1 except that a liquefied gas (normal butane) having a vapor pressure of 0.23 MPa at 35 ° C. was used as the propellant.

<Comparative example 3>
A spray-type product was manufactured in the same manner as in Example 1 except that the housing of the injection member shown in FIG. 1 was provided with an air introduction hole.

With respect to the spray-type products obtained in Examples 1 to 6 and Comparative Examples 1 to 3, the stability of the injected material at the time of pump injection, the stability of the container at the time of injection, the possibility of continuous injection, and the storage The stability of the container was evaluated. The results are shown in Table 1.

1. 1. Stability of the injected material Using a spray-type product stored in a constant temperature room at 25 ° C for one day, the trigger part is operated to pump the stem so that the stem is lowered by 7 mm, and the injected material adheres to the injection target (glass). The condition was evaluated according to the following evaluation criteria.
(Evaluation criteria)
⊚: The spray-type product was able to spray the contents from the beginning to the end, and the sprayed contents were finely foamed and adhered to the object to be sprayed.
◯: The spray-type product was able to spray the contents from the beginning to the end, and the sprayed contents foamed and adhered to the object to be sprayed, although the foaming was slightly weak.
X: In the spray-type product, the foaming of the injected contents became worse during the injection, and the spray-type product dripped from the injection target. Further, in the spray type product, since the contents in the housing are discharged into the container body after the injection, the injection operation is required 3 to 5 times until the next injection can be performed.
XX: The spray-type product had poor foaming from the beginning to the end and immediately dripping from the injection target.

2. Container stability during injection When the above "1. Stability test of injected material" was performed, the shape change of the container body was evaluated according to the following evaluation criteria.
(Evaluation criteria)
⊚: In the spray type product, the container body was hardly deformed from the beginning to the end.
◯: In the spray type product, when the content was reduced to 20 to 30% by weight of the filling amount, the body of the container body temporarily contracted due to the introduction of the content into the housing immediately after spraying. , Returned to the original.
X: In the spray-type product, the body of the container body began to shrink when the content was reduced to 70 to 80% by weight of the filling amount, and the body was deformed to bend at about 30% by weight.

3. 3. Whether or not continuous injection is possible Using a spray-type product stored in a constant temperature room at 25 ° C for one day, the trigger part is operated so that the stem is lowered by 2 mm, and continuous injection is performed. Was evaluated according to the following evaluation criteria.
(Evaluation criteria)
⊚: In the spray type product, the contents of 80% by weight or more of the filling amount could be continuously sprayed.
◯: In the spray type product, the contents of 50 to 80% by weight of the filling amount could be continuously injected.
X: In the spray type product, the amount of the contents that could be continuously injected was 30% by weight or less of the filling amount.
XX: The spray-type product could not continuously inject the contents from the beginning.

4. Container stability during storage The change in container shape when the spray-type product was stored in a constant temperature room at 40 ° C. for 1 month was evaluated according to the following evaluation criteria.
(Evaluation criteria)
⊚: The shape of the container hardly changed and did not affect the injection.
◯: The body of the container body expanded slightly, but did not affect the injection.
X: Not only the body of the container but also the bottom of the container expanded, making it easier to tip over.

As shown in Table 1, in the spray-type products of Examples 1 to 6, the contents can be sprayed from the beginning to the end, and the sprayed contents are foamed and the objects to be sprayed. Adhered to. Further, in the spray-type products of Examples 1 to 6, the container body hardly contracted immediately after injection, or returned to its original state even if it contracted temporarily, and did not affect the injection. In addition, the spray-type products of Examples 1 to 6 were able to continuously inject the contents of 50% by weight or more of the filling amount. Further, in the spray-type products of Examples 1 to 6, the shape of the container hardly changed even when stored at a high temperature for a long period of time, or the body portion was slightly expanded, and the spraying was not affected. On the other hand, in the spray-type product of Comparative Example 1 which was not filled with the propellant, the sprayed contents did not foam well, and when the contents became small, the container body contracted and bent, and the sprayed state was not stable. In addition, the contents could not be continuously injected. Further, in the spray-type product of Comparative Example 2 using a liquefied gas having a large vapor pressure, the shape of the container was easily expanded by storage at a high temperature. Further, in the spray-type product of Comparative Example 3 provided with the air introduction hole, the propellant is discharged along with the injection, the foaming becomes worse from the middle of the injection, and the contents are injected at the next injection after the injection is stopped. It took 2-3 injection operations to complete the process. Further, in the spray-type product of Comparative Example 3, the amount of contents that could be continuously injected was small.

1 Spray type product 2 Container body 21 Main body 22 Neck 3 Pressurizing mechanism 4 Injection member 41 Injection nozzle 41a Rotating shaft 41b In-nozzle passage 42 Operation part 42a Lever support part 42b Lever 42c Main body part 42d Support arm 42e Circular groove 42f times Drive shaft 42g Trigger part 43 Tip nozzle 43a Injection hole 43b Nozzle tip 5 Housing 51 Housing body 51a Flange part 51b Small diameter part 51c Contents intake hole 51d Contact step 52 Tube 53 Gasket 54 Check valve mechanism 54a Recess 54b Ball 6 Valve body 7 Contact member 71 Top surface part 72 Contact leg part 8 Stem mechanism 81 Stem body 82 Piston member 83 Spring member 84 Internal stem 84a Bowl-shaped part 84b Cylindrical part 84c Contact groove 84d Notch groove 85 External stem 85a External stem Inner passage 85b Skirt part 85c Cylindrical part 85d Contact 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 Connection Ring 9 Screw cap 9a Top plate 9b Side circumference 9c Mounting part 9d Cover part 9e Engaging part A1 Contents flow S1 First space

Claims (3)

It is provided with a container body filled with contents containing an undiluted solution and a propellant, and a pressurizing mechanism attached to the container body.
The propellant is a liquefied gas having a pressure of 0.05 to 0.2 MPa (gauge pressure) at 35 ° C.
The pressurizing mechanism includes a housing for storing the contents and a stem mechanism for pressurizing the contents in the housing.
The stem mechanism includes a stem and a piston member.
When the first operation of sliding the stem by a predetermined distance is performed, the stem communicates with the outside and the inside of the container body.
The piston member pressurizes the contents in the housing when a second operation is performed in which the stem is further slid by a predetermined distance.
The housing is a spray-type product in which no air introduction hole for introducing air is formed. The spray-type product according to claim 1, wherein the propellant is contained in the contents in an amount of 5 to 40% by mass. The contents further contain a pressurizing agent.
The spray-type product according to claim 1 or 2, wherein the internal pressure of the injection container at 35 ° C. is 0.1 to 0.5 MPa.

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