JP2018052601A - Discharge container and foam agent contained in discharge container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge container capable of forming high quality foam and foam agent contained in a discharge container.SOLUTION: A discharge container 1 contains a container body 2 for storing foam agent 200, a cylinder 41 forming air chambers 45 and 46 and a liquid chamber 47, a pump section 17 having a piston 42 formed so as to reciprocate in the cylinder 41, a nozzle 16 having a discharge flow path 34, a mixing chamber 48 for mixing the foam agent 200 discharged by the pump section 17 with air, a first porous body 18 provided in the discharge flow path 34 and having a cylindrical first holder 18a, a first mesh 18b provided on the primary side of the first holder 18a and a second mesh 18c provided on the secondary side of the first holder 18a, and a second porous body 19 provided on the secondary side of the first porous body 18 in the discharge flow path 34 and having a cylindrical second holder 19a, a third mesh 19b provided on the primary side of the second holder 19a and a fourth mesh 19c provided on the secondary side of the second holder 19a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a discharge container for discharging a foam-like foam agent and a foam agent in a discharge container.

  Foaming agents as foaming preparations are easy to spread because they are foamy and can be applied in a wide range, so they are applied not only to cosmetics and pharmaceuticals but also to sundries such as detergents. As the gas used for foaming such a foaming agent, a liquefied gas such as LPG or fluoroalkane is mainly used. However, these gases are restricted in use due to problems such as the generation of ozone holes, and problems such as the gas dissolved in the foam causing irritation to the user also occur.

  Therefore, in recent years, attention has been paid to a technique for making a non-gas type preparation that does not use a liquefied gas into a foam in a discharge container, and a foam agent using gas is being replaced by a non-gas type foam agent.

  Non-gas type foam agents are good for foaming, and are mainly anionic surfactants and amphoteric surfactants, combined with nonionic surfactants in preparations, and discharged from a discharge container that can discharge liquid in the form of foam. Can be obtained.

  However, foaming agents containing anionic surfactants and amphoteric surfactants, including fatty acid soaps with high surfactant activity, cause irritation to mucous membranes and skin. It tends to be foamy and has poor foam retention when attached to the skin. On the other hand, a foam agent containing a nonionic surfactant with low skin irritation cannot obtain sufficient foaming, foam retention and foam quality because of its low foaming property.

  In addition, the foaming agent that clogs the discharge container or crushes bubbles and remains in the discharge container to cause liquid dripping can not only cause discomfort to the user, but it can also stain clothes and the like by dripping. Therefore, there is a demand for a technology capable of providing a high-quality foam-like foaming agent having good foaming and foam retention.

  In recent years, the technology of the discharge container has been advanced to improve the pump for producing a high quality foam quality. In particular, in a discharge container that forms and supplies bubbles from a liquid, a pump that can adjust the quality of the bubbles according to the properties of the liquid has been proposed (see, for example, Patent Document 1).

Japanese Patent No. 36552426

  However, even if the foam quality can be adjusted only by the configuration of the discharge container that can adjust the foam quality according to the properties of the liquid, there is a risk that good quality foam will not be produced, or clogging or dripping may occur. Further, depending on the composition of the foam agent, it may be difficult to produce high-quality foam, and a technology that can provide higher-quality foam than conventional discharge containers is desired.

  Then, an object of this invention is to provide the discharge container which can form a quality foam, and the foam agent containing a discharge container.

  In order to solve the above-described problems and achieve the object, the discharge container and the foamed container containing the discharge container of the present invention are configured as follows.

  As one aspect of the present invention, a discharge container includes a container body that stores a foam agent, a cylinder that forms an air chamber and a liquid chamber, and a cylinder that is reciprocally movable in the cylinder. A pump unit having a piston to be compressed, and driving the piston by reciprocating, a nozzle having a discharge flow path of the foam agent supplied from the pump unit, and provided on the secondary side of the pump unit; A mixing chamber for mixing the foam agent discharged from the pump unit with the air in the air chamber, a cylindrical first holder, a first mesh provided in an opening on the primary side of the first holder, and the A first porous body provided in the discharge flow path, a second cylindrical holder, and a primary side opening of the second holder, the second mesh provided in the secondary side opening of the first holder; 3rd mesh provided in And, a fourth mesh provided in an opening of the secondary side of the second holder, and a second porous member provided on the secondary side of the first porous body of the discharge flow channel.

  As one aspect of the present invention, a foam container containing a discharge container includes the above discharge container and a foam agent containing a nonionic surfactant and a polyhydric alcohol.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the discharge container which can form a quality foam, and the foam agent containing a discharge container.

Sectional drawing which shows the structure of the discharge container which concerns on one Embodiment of this invention. Explanatory drawing which shows an example of the result of the evaluation test 1 of an Example. Explanatory drawing which shows an example of the result of the evaluation test 1 of an Example. Explanatory drawing which shows an example of the result of the evaluation test 1 of an Example. Explanatory drawing which shows an example of the result of the evaluation test 1 of an Example. Explanatory drawing which shows an example of the result of the evaluation test 2 of an Example.

Hereinafter, the structure of the discharge container 1 which concerns on one Embodiment of this invention is demonstrated using FIG.
FIG. 1 is a cross-sectional view showing a configuration of a discharge container 1 according to the first embodiment of the present invention. In the present embodiment, the vertical direction will be described below with the container body 2 side of the discharge container 1 as the lower side and the nozzle 16 side of the pump body 3 as the upper side, as shown in FIG.

  As shown in FIG. 1, the discharge container 1 includes a container body 2, a pump body 3, and a tube body 4. The discharge container 1 is a so-called hand pump that discharges the foam agent 200 stored in the container body 2 in the form of foam by the pump body 3.

  The foam agent 200 is a content stored in the container body 2. For example, the foam 200 is a liquid medical drug suitable for the treatment of skin diseases such as atopic dermatitis and psoriasis.

  The foam agent 200 used in the present embodiment is a solubilized external composition and contains a nonionic surfactant and a polyhydric alcohol. In the present embodiment, the nonionic surfactant can be used alone, or a plurality of nonionic surfactants can be used in combination.

  Nonionic surfactants, for example, polyoxyethylene may be added, fatty acid monoglyceride and fatty acid ester of polyglycerin, polyoxyethylene fatty acid ester, sorbitan fatty acid ester to which polyoxyethylene may be added 1 or 2 or more types selected from polyoxyethylene alkyl or alkenyl ether, polyoxyethylene polyoxypropylene alkyl ether, fatty acid diethanolamide, and optionally hydrogenated polyoxyethylene castor oil It can be contained in the composition for external use which is the agent 200.

  Here, the average added mole number of polyoxyethylene or polyoxypropylene is preferably 2 to 90. Moreover, 6-24 are preferable on average for the carbon number of the fatty acid which comprises fatty acid ester, More preferably, it is 6-22. As for the average carbon number of an alkyl group and an alkenyl group, 10-22 are preferable. As the fatty acid constituting the fatty acid diethanolamide, those having 10 to 18 carbon atoms are preferred, and those having 10 to 14 are particularly preferred.

  Moreover, as a nonionic surfactant, polyoxyethylene alkyl ether or the combination of 2 or more types of nonionic surfactant containing this is preferable. The polyoxyethylene alkyl ether is more preferably polyoxyethylene oleyl ether or lauromacrogol, particularly preferably lauromacrogol. Nonionic surfactants to be combined with the polyoxyethylene alkyl ether include polyoxyethylene (average added mole number 5 to 70) fatty acid ester and polyoxyethylene (average added mole number 30 to 90) castor oil. The above is particularly preferable. Examples of polyoxyethylene (average added mole number: 5-70) fatty acid ester include polyethylene glycol monostearate (MYS-40MV). Examples of polyoxyethylene (average added mole number: 30 to 90) castor oil include POE hydrogenated castor oil 60 (HCO-60).

  The preferable content of the nonionic surfactant is 0.5 to 10% by mass, and more preferably 1 to 8% by mass with respect to the total amount of the foam agent 200.

  The polyhydric alcohol can be used alone, or a plurality of polyhydric alcohols can be used in combination. Examples of the polyhydric alcohol include 1,3-butylene glycol, propylene glycol, 1,2-pentanediol, and glycerin. In particular, 1,3-butylene glycol, glycerin, or 1,3-butylene glycol and glycerin. The combination of is preferable. The blending ratio of the polyhydric alcohol with respect to the total amount of the foam agent 200 is not particularly limited, but is preferably 10% by mass or more, and more preferably 10% by mass to 50% by mass.

  The container body 2 has a bottomed cylindrical shape, for example, a bottomed cylindrical shape. The container body 2 is formed so that the foam agent 200 can be stored therein. The container body 2 is formed of glass, earthenware, a resin material, or the like. The container body 2 includes a first fixing portion 11 having an opening portion in which a part of the upper end protrudes and opens. The 1st fixing | fixed part 11 has the external thread part 12 integrally molded by the outer peripheral surface.

  The pump body 3 includes a support portion 15, a nozzle 16, a pump portion 17, a first porous body 18, and a second porous body 19. The pump body 3 is fixed to the container body 2 by the support portion 15.

  The support portion 15 includes a first fixed portion 21 fixed to the first fixing portion 11 of the container body 2, a first guide portion 22 for inserting and guiding the nozzle 16, and a part of the pump portion 17 being fixed. Second fixing portion 23. As for the support part 15, the 1st to-be-fixed part 21, the 1st guide part 22, and the 2nd fixing part 23 are integrally shape | molded by the resin material.

  The first fixed portion 21 is formed in a cylindrical shape having different outer diameters and different inner diameters. Specifically, the first fixed portion 21 is configured such that the inner diameter on the lower end side is larger than the outer diameter of the first fixed portion 11. The first fixed portion 21 is configured in a cylindrical shape in which the inner diameter of the inner peripheral surface facing the first fixed portion 11 is the same, and the inner diameter above the portion is gradually reduced. The first fixed portion 21 has a female screw portion 25 that is integrally formed on the inner peripheral surface facing the first fixing portion 11 and that is screwed with the male screw portion 12 of the first fixing portion 11. The 1st to-be-fixed part 21 is provided with the 1st guide part 22 in the upper end side. Further, the first fixed portion 21 is integrally provided with the second fixing portion 23 on the inner surface on the upper end side.

  The first guide portion 22 is a circular opening formed at the upper end portion of the first fixed portion 21. The 2nd fixing | fixed part 23 is formed in a cylindrical shape, and is comprised so that a part of pump part 17 can be fixed. Specifically, the outer peripheral surface of the second fixing portion 23 is formed so as to be fitted to a cylinder 41 described later of the pump portion 17.

  The nozzle 16 includes an outer cylinder part 31 that can be inserted into the first guide part 22, an inner cylinder part 32 having a smaller diameter than the outer cylinder part 31, and a top surface part 33 that closes one end of the outer cylinder part 31 and the inner cylinder part 32. And a nozzle portion 36 that is continuous with the inside of the inner cylinder portion 32. In the nozzle 16, the outer cylinder portion 31, the inner cylinder portion 32, the top surface portion 33, and the nozzle portion 36 are integrally formed of a resin material. In addition, the nozzle 16 includes a discharge flow path 34 through which the foam agent 200 passes in the inner cylinder portion 32 and the nozzle portion 36.

  The outer diameter of the outer cylinder part 31 is formed smaller than the inner diameter of the first guide part 22. The outer cylinder portion 31 is closed at one end side by the top surface portion 33.

  The diameter of the inner cylinder part 32 is configured to be smaller than the inner diameter of the first guide part 22 and the inner diameter of the outer cylinder part 31. One end side of the inner cylinder part 32 is closed together with the outer cylinder part 31 by the top surface part 33. That is, the outer peripheral surface of the inner cylinder part 32 faces the inner peripheral surface of the outer cylinder part 31, and the upper end is closed together with the outer cylinder part 31 by the top surface part 33.

  The inner cylinder part 32 is configured such that the first porous body 18 can be disposed and a part of the pump part 17 can be fixed to one end side. Specifically, the inner cylinder portion 32 has an inner diameter that is larger than the outer diameter of the first porous body 18 and substantially the same diameter as an outer diameter of a first fitting portion 65 described later of the pump portion 17. Configured. The inner cylinder portion 32 includes a cylindrical first flow path portion 35 constituting a part of the discharge flow path 34 therein.

  The top surface portion 33 covers one end of the outer cylinder portion 31 and the inner cylinder portion 32 and constitutes a part of the nozzle portion 36.

  The nozzle portion 36 is configured to protrude in a cylindrical shape, for example, a cylindrical shape, from a part on the upper end side of the outer cylindrical portion 31 obliquely upward. The nozzle part 36 includes a second flow path part 39 that communicates with the first flow path part 35 of the inner cylinder part 32. The nozzle portion 36 is configured so that the second porous body 19 can be fitted inside the tip. Specifically, the nozzle portion 36 is configured such that the inner diameter of the tip is the same as or slightly smaller than the outer diameter of the second porous body 19.

  The pump unit 17 includes a cylinder 41, a piston 42, a valve unit 43, and an urging member 44. The pump unit 17 includes a first air chamber 45, a second air chamber 46, a liquid chamber 47, and a mixing chamber 48.

  The cylinder 41 includes a first cylinder part 51, a second cylinder part 52 formed integrally with the first cylinder part 51, a second fixed part 53 fitted to the second fixing part 23, and a second cylinder And a first valve seat 55 that is a part of the valve portion 43 provided between the second cylinder portion 52 and the attachment portion 54.

  In the cylinder 41, a first cylinder portion 51, a second cylinder portion 52, a second fixed portion 53, an attachment portion 54, and a first valve seat 55 are integrally formed of a resin material. In the cylinder 41, the first cylinder part 51 and the second cylinder part 52 are coaxially arranged.

  The first cylinder portion 51 is formed in a cylindrical shape. The first cylinder portion 51 has a second cylinder portion 52 formed on one end side and a second fixed portion 53 formed on the other end portion. The first cylinder portion 51 is configured such that a part of the piston 42 can slide on the inner peripheral surface. The inner diameter of the first cylinder part 51 is configured to be slightly larger than the inner diameter of the second fixed part 23.

  In the first cylinder portion 51, a hole 51a that communicates the inside of the first cylinder portion 51 and the inside of the container body 2 is formed in a part of the peripheral surface on the second fixed portion 53 side. The hole 51 a is located inside the container body 2 when the pump section 17 is fixed to the container body 2 via the support section 15. The hole 51 a is disposed on a part of the peripheral surface of the first cylinder portion 51 that is higher than the liquid level of the foam agent 200 stored in the container body 2. The hole 51 a is formed so that the space in the first cylinder 51 and the internal space of the container body 2 can be blocked by a part of the piston 42 that slides in the first cylinder 51.

  The second cylinder part 52 is integrally provided at the lower end of the first cylinder part 51, and has a smaller diameter than the first cylinder part 51. The second cylinder portion 52 is configured such that a part of the piston 42 is slidable. Further, the second cylinder portion 52 is provided with a seating surface 52a, a mounting portion 54, and a first valve seat 55 at the end thereof. The seating surface 52a is an annular surface, and the center is recessed.

  The second fixed portion 53 is integrally provided at the end portion of the first cylinder portion 51. The second fixed portion 53 has a cylindrical shape, and an inner diameter thereof is slightly larger than an inner diameter of the first cylinder portion 51 and is configured to have substantially the same diameter as the outer diameter of the second fixed portion 23. The The second fixed portion 53 is configured to be fitted to the outer peripheral surface of the second fixed portion 23. The 2nd to-be-fixed part 53 equips the outer peripheral surface with the flange part 53b supported via the sealing member 53a at the end surface of the 1st fixing | fixed part 11 of the container body 2. As shown in FIG.

  The attachment portion 54 is provided continuously to the second cylinder portion 52 via the first valve seat 55. The inner diameter of the attachment portion 54 is formed to be substantially the same diameter as the outer diameter of the tube body 4 or slightly smaller, and is configured so that the tube body 4 can be fitted.

  The first valve seat 55 is configured by a depression of the seat surface 52a of the second cylinder part 52. The first valve seat 55 is configured by a tapered inclined surface that gradually decreases in diameter from the second cylinder portion 52 side toward the mounting portion 54 side.

  The piston 42 includes a rod portion 61 fixed to the inner cylinder portion 32, a first piston portion 62 provided on the rod portion 61, and a second piston portion 63 fixed to the rod portion 61. The piston 42 is configured such that the rod portion 61 and the first piston portion 62 are integrally formed of a resin material, and the second piston portion 63 formed separately is fixed. The piston 42 reciprocates following the reciprocating motion of the nozzle 16 by fixing the rod portion 61 to the inner cylindrical portion 32.

  The rod portion 61 is formed in a cylindrical shape, and includes a first fitting portion 65 provided at one end portion, a mixing portion 66 provided at a midway portion, and a second fitting portion provided at the other end portion. Part 67.

  The first fitting portion 65 has an outer diameter that is the same as or slightly larger than the inner diameter of the inner cylinder portion 32, and the inner cylinder portion 32 is fitted therein. The first fitting portion 65 is configured to have the same diameter as the outer diameter of the first porous body 18 or a slightly smaller diameter, and the first porous body 18 is fitted therein. The first fitting portion 65 has a protruding portion 65 a that abuts the end surface of the inner cylinder portion 32 of the nozzle 16 in the axial direction of the rod portion 61 on the outer surface spaced apart from the end portion by a predetermined distance.

  The mixing portion 66 is a cylindrical protrusion provided inside the rod portion 61 on the second fitting portion 67 side. The mixing portion 66 constitutes a mixing chamber 48 that mixes air and the foam agent 200 in the rod portion 61. The mixing portion 66 forms a space that constitutes the mixing chamber 48 on the second fitting portion 67 side, and has a hole 66a that continues from the mixing chamber 48 to the first fitting portion 65 side. It is a bottomed cylindrical projection provided. The inner diameter of the hole 66 a is configured to be smaller than the inner diameter of the portion constituting the mixing chamber 48. Moreover, the mixing part 66 has the some protrusion part 66b comprised in the inside so that the movement of the 2nd valve body 92 which contact | abuts with the 2nd valve body 92 of the valve part 43 mentioned later can be controlled.

  The 2nd fitting part 67 is comprised so that the 2nd piston part 63 can be fixed because the 2nd piston part 63 fits. Moreover, the 2nd fitting part 67 has the groove part which continues to the mixing part 66 from the edge part, and comprises the flow path of air.

  The first piston part 62 includes a first sliding part 71 slidable with the inner peripheral surface of the first cylinder part 51, a connecting part 72 that integrally connects the first sliding part 71 to the rod part 61, and a connection And a hole 73 provided in the portion 72.

  The first sliding portion 71 is formed in a cylindrical shape whose both ends are slidable with the inner peripheral surface of the first cylinder portion 51. Specifically, the first sliding portion 71 is provided at both ends of the barrel portion 71a and a barrel portion 71a that forms a minute gap between the inner circumferential surface of the first cylinder portion 51 and the outer circumferential surface thereof. The inner peripheral surface of the 1st cylinder part 51 and the edge part 71b which can slide are provided.

  The body portion 71 a is configured in a cylindrical shape whose outer diameter is slightly smaller than the inner diameter of the first cylinder portion 51. The outer diameter of the end portion 71 b is configured to be slightly larger than the inner diameters of the second fixed portion 23 and the first cylinder portion 51.

  The connecting part 72 integrally connects the rod part 61 and the body part 71a. The connecting portion 72 includes a cylindrical groove 74 provided adjacent to the hole 73. A plurality of hole portions 73 are provided adjacent to the outer peripheral side of the groove portion 74 of the connecting portion 72.

  The second piston part 63 is formed in a cylindrical shape. The second piston part 63 is fixed to the rod part 61, and the outer peripheral surface thereof is formed to be slidable with the inner peripheral surface of the second cylinder part 52. More specifically, the second piston portion 63 slides on the second fitted portion 81 fixed to the second fitting portion 67 of the rod portion 61 and the inner peripheral surface of the second cylinder portion 52. 2 sliding portions 82. The second piston portion 63 includes a second valve seat 83 provided on an inner peripheral surface of an end portion where the second fitted portion 81 is provided, and an inner peripheral surface of the second valve seat 83 from the second valve seat 83. Is also provided with a first seat surface portion 84 provided on the other end portion side, and a third valve seat 85 provided between the second fitted portion 81 and the second sliding portion 82.

  The second fitted portion 81 is formed so as to be fitted to the inner peripheral surface of the second fitting portion 67 of the rod portion 61. The second sliding portion 82 is configured in a cylindrical shape. The second sliding portion 82 has an outer diameter that is substantially the same as or slightly larger than the inner diameter of the second cylinder portion 52, and is configured to be slidable with the inner peripheral surface of the second cylinder portion 52.

  The second valve seat 83 is formed on the inner peripheral surface of the second fitted portion 81 side end portion of the second piston portion 63 and has a tapered surface shape that gradually decreases in diameter toward the second sliding portion 82 side. Consists of slopes. The first seat surface portion 84 is configured such that the inner diameter of the second piston portion 63 on the second sliding portion 82 side is larger than the inner diameter on the second fitted portion 81 side. The first seat surface portion 84 supports one end portion of the biasing member 44.

  The third valve seat 85 is an end surface on the second fitted portion 81 side of the annular projecting portion provided on the outer peripheral surface of the end portion on the second fitted portion 81 side of the second sliding portion 82. Consists of.

  The valve portion 43 includes a first valve seat 55, a second valve seat 83, a third valve seat 85, a first valve body 91, a second valve body 92, a third valve body 93, and a second valve. And a second guide part 94 for guiding the movement of the body 92. The valve portion 43 is formed such that the first valve body 91, the second valve body 92, and the third valve body 93 can be opened and closed by the reciprocating motion of the piston 42.

  The first valve body 91 is a sphere formed of a metal material or a resin material. The first valve body 91 is disposed on the inclined surface of the first valve seat 55 and is pressed by the foam agent 200 on the secondary side of the first valve body 91 by its own weight or in addition to its own weight. A part of the surface contacts in an annular shape. Further, the first valve body 91 is separated from the inclined surface of the first valve seat 55 by the flow of the foam agent 200 from the mounting portion 54.

  The second valve body 92 is a so-called poppet valve made of a resin material. The 2nd valve body 92 is provided with the valve body part 92a in which the outer peripheral surface contact | abuts to the 2nd valve seat 83, and the shaft body 92b provided in the edge part of the valve body part 92a. The second valve element 92 and the second valve seat 83 form a discharge part that discharges the foam agent 200 from the liquid chamber 47.

  The valve body portion 92 a is formed by a tapered inclined surface whose outer peripheral surface is gradually reduced in diameter, and forms a contact surface that contacts the second valve seat 83. The inclination angle of the valve body portion 92a is formed at the same angle as the inclination angle of the second valve seat 83, for example. Further, the valve body portion 92 a is opposed to the internal space of the second piston portion 63 with a part of the outer surface on the distal end side not contacting the second valve seat 83.

  The shaft body 92b is configured integrally with the tip of the valve body portion 92a. The shaft body 92b is provided at a tip portion thereof, that is, an end portion opposite to the end portion provided with the valve body portion 92a, and a projection 92c protruding in a radial direction from the outer diameter of the shaft body 92b It is formed at the tip.

  Before the nozzle 16 is operated, the second valve body 92 is always closed because the valve body portion 92a is in contact with the second valve seat 83, and follows the nozzle 16 when the nozzle 16 is operated. Thus, the second valve seat 83 is separated from the valve body portion 92a by the movement of the second piston portion 63.

  The third valve body 93 includes a fixed body 93a fixed to the connecting portion 72, a first on-off valve 93b provided on the outer peripheral side of the end of the fixed body 93a, and an inner peripheral side of the end of the fixed body 93a. And a provided second on-off valve 93c.

  As for the 3rd valve body 93, the fixed body 93a, the 1st on-off valve 93b, and the 2nd on-off valve 93c are integrally formed by the resin material which can be elastically deformed, such as a rubber material. The fixed body 93a is formed in a cylindrical shape, for example. The third valve body 93 is fixed to the first piston portion 62 by fitting the fixed body 93 a into the groove portion 74 provided in the connecting portion 72.

  The first on-off valve 93 b closes the hole 73 by contacting the connecting portion 72. The second on-off valve 93 c closes the groove portion of the second fitting portion 67 by coming into contact with the third valve seat 85 of the second piston portion 63.

  The second guide portion 94 is made of a resin material and is disposed on the seating surface 52 a of the second cylinder portion 52. The second guide portion 94 is formed in a cylindrical shape. The second guide portion 94 is formed to project in an annular shape from the outer peripheral portion of one end portion, and is provided on a second seat surface portion 94a formed on the one end portion side with a substantially same diameter as the seat surface 52a. A plurality of groove portions 94b provided along the axial center direction of the second guide portion 94 and the other end portion are provided in contact with the protruding portion 92c of the second valve body 92, so that the second valve body 92 And a protrusion 94c that restricts movement.

  The urging member 44 is a coil spring made of a metal material. The urging member 44 is supported by a first seat surface portion 84 provided on the inner peripheral surface of the second piston portion 63 and a second seat surface portion 94 a of the second guide portion 94. The urging member 44 urges the second piston portion 63 and the second guide portion 94 in directions away from each other via the first seat surface portion 84 and the second seat surface portion 94a.

  The first air chamber 45 includes a first cylinder part 51, a first piston part 62, and a second piston part 63, and its volume changes as the first piston part 62 reciprocates. The first air chamber 45 is continuous with the second air chamber 46 through the hole 73, and is continued with the mixing chamber 48 through the groove portion of the second fitting portion 67 of the rod portion 61.

  The second air chamber 46 includes the first fixed portion 21, the second fixing portion 23, the first cylinder portion 51, the rod portion 61, and the first piston portion 62, and the reciprocating motion of the first piston portion 62. Its volume changes. The second air chamber 46 communicates with the outside air through a gap between the first guide portion 22 and the outer cylinder portion 31.

  Further, the second air chamber 46 has an end portion 71 b of the first piston portion 62 located in the second air chamber 46 located below the hole portion 51 a of the first cylinder portion 51. Communicate with space. The first air chamber 45 and the second air chamber 46 are formed by dividing the inside of the first cylinder portion 51 by the first piston portion 62.

  The liquid chamber 47 is formed by the second cylinder portion 52, the second piston portion 63, the first valve body 91 and the second valve body 92, and the volume thereof changes as the second piston portion 63 reciprocates. The liquid chamber 47 communicates with the inside of the container body 2 through the attachment portion 54 and the tube body 4 when the first valve body 91 is separated from the first valve seat 55. Further, the liquid chamber 47 communicates with the mixing chamber 48 by separating the valve body portion 92 a of the second valve body 92 from the second valve seat 83 of the second piston portion 63.

  The mixing chamber 48 includes a mixing portion 66 of the rod portion 61, a second piston portion 63, and a second valve body 92. The mixing chamber 48 communicates with the discharge channel 34 on the secondary side through the hole 66 a of the mixing unit 66. The mixing chamber 48 mixes air and the foam agent 200, and discharges the foam agent 200 mixed with air to the secondary side through the hole 66 a of the mixing portion 66.

  The first porous body 18 includes a cylindrical first holder 18a that is fitted to the first fitting portion 65, a first mesh 18b that is provided in an opening at an end portion on the primary side of the first holder 18a, 2nd mesh 18c provided in the opening of the edge part of the secondary side of 1 holder 18a.

  The first holder 18a is configured such that the outer diameter on the primary side is smaller than the outer diameter on the secondary side, in other words, the outer diameter on the lower end side is smaller than the outer diameter on the upper end side. The first holder 18 a is configured such that the primary outer diameter is a diameter that can be fitted to the first fitting portion 65.

  In the first holder 18a, the inner diameter d1 of the primary side opening and the inner diameter d2 of the secondary side opening are configured to have the same diameter. In addition, the first holder 18a has a constant inner diameter between the end portions, and by expanding the diameters at both end portions, the inner diameter of each opening at both end portions is larger than the inner diameter between the end portions. Composed. For example, the inner diameters d1 and d2 of the openings at both ends of the first holder 18a are configured to be 6.35 mm. A distance L1 between openings at both ends of the first holder 18a is configured to be 14.4 mm, for example.

The first mesh 18b is a porous sheet. The first mesh 18b is configured with coarser eyes than the second mesh 18c. The first mesh 18b has a mesh number of 100 (aperture ratio 52%) and a wire diameter of 71 μm. The opening area on the primary side of the first holder 18a provided with the first mesh 18b is configured to be 16.5 mm ² .

The second mesh 18c is a porous sheet. The second mesh 18c has a mesh number of 200 (aperture ratio 42%) and a linear shape of 45 μm. The opening area on the secondary side of the first holder 18a provided with the second mesh 18c is configured to 13.3 mm ² .

  The second porous body 19 includes a cylindrical second holder 19a fitted to the nozzle portion 36, a third mesh 19b provided at an opening on the primary side of the second holder 19a, and a second holder 19a. 4th mesh 19c provided in opening of the edge part of the secondary side of this.

  The 2nd holder 19a is comprised by the diameter which can be fitted in the nozzle part 36. FIG. The second holder 19a is configured such that the outer diameter on the primary side is smaller than the outer diameter on the secondary side.

  The second holder 19a is configured such that the inner diameter d3 of the primary side opening is slightly smaller than the inner diameter d4 of the secondary side opening. The second holder 19a has a shape in which the inner diameter between the end portions gradually increases from the primary side to the secondary side and expands on the both end sides, and the inner diameter of each opening at both end portions is the end. It is comprised larger than the internal diameter between parts.

  Further, the expansion ratio W = (d4−d3) / d3 × 100 [%] of the inner diameter d4 of the secondary side opening with respect to the inner diameter d3 of the primary side opening of the second holder 19a is preferably 8% ≦ W ≦. Consists of 25%.

  For example, the inner diameter d3 of the primary side opening of the second holder 19a is configured to be 4.45 mm, and the inner diameter d4 of the secondary side opening is configured to be 4.9 mm. The diameter expansion rate W of the second holder 19a is configured to be 10%. The distance L2 between the openings at both ends of the second holder 19a is configured to be, for example, 5 mm or more and less than 10 mm. In the present embodiment, the second holder 19a is configured such that the distance L2 is 6.5 mm.

The third mesh 19b is configured with coarser eyes than the fourth mesh 19c. The third mesh 19b has a mesh number of 100 (opening ratio 52%). That is, the same mesh as the first mesh 18b is used for the third mesh 19b. The opening area of the primary side of the second holder 19a of the third mesh 19b is provided is configured 8.1 mm ^2.

The fourth mesh 19c is configured with 200 meshes (aperture ratio 42%). That is, the same mesh as the second mesh 18c is used for the fourth mesh 19c. The opening area on the secondary side of the second holder 19a provided with the fourth mesh 19c is configured to be 7.9 mm ² .

  The first porous body 18 and the second porous body 19 have a change rate C = (d3-d2) of the inner diameter d3 of the primary side opening of the second porous body 19 with respect to the inner diameter d2 of the secondary side opening of the first porous body 18. ) / D2 × 100 [%] is configured such that −30% ≦ C ≦ 50%.

  The pump body 3 including the first porous body 18 and the second porous body 19 has a hole 66a, an internal space of the first holder 18a, a first flow path section 35, a second flow path on the secondary side of the mixing chamber 48. A discharge channel 34 constituted by the channel 39 and the internal space of the second holder 19a is provided.

  The discharge flow path 34 forms a flow path of the foam agent 200 from the mixing chamber 48 to the opening at the tip of the nozzle portion 36. In addition, the discharge flow path 34 includes four meshes 18b, 19b, 18c, and 19c in which meshes having a coarse mesh and fine meshes are alternately arranged from the primary side to the secondary side. The discharge flow path 34 is formed by the first porous body 18 and the second porous body 19, and the foam of the foam agent 200 mixed with air in the mixing chamber 48 is refined through openings 18 and meshes 18 b, 19 b, 18 c, and 19 c. It becomes possible to miniaturize.

  The tubular body 4 is a flexible tube. The tube body 4 is fitted to the attachment portion 54 and extends to the bottom of the container body 2.

Next, the discharge of the foam agent 200 using the discharge container 1 configured as described above will be described.
The discharge container 1 is always urged by the urging member 44 in a direction in which the second piston portion 63 is separated from the second guide portion 94 provided in the second cylinder portion 52, so that the nozzle 16 and the piston 42 are urged. Is maintained at top dead center.

  When the nozzle 16 and the piston 42 are located at the top dead center, the volumes of the first air chamber 45 and the liquid chamber 47 are maximized. When the nozzle 16 and the piston 42 are located at the top dead center, the first valve body 91, the second valve body 92, and the third valve body 93 are kept closed, and the first air chamber 45 and the second air chamber 46 are maintained. The first air chamber 45 and the liquid chamber 47, the first air chamber 45 and the mixing chamber 48, and the liquid chamber 47 and the mixing chamber 48 are shut off.

  Next, when the nozzle 16 presses the nozzle 16 in a direction approaching the container body 2, the piston 42 moves from the top dead center toward the bottom dead center. Specifically, the first piston portion 62 and the second piston portion 63 move toward the bottom dead center, and the volumes of the first air chamber 45 and the liquid chamber 47 gradually decrease. Further, when the first piston part 62 and the second piston part 63 move toward the bottom dead center, the volume of the second air chamber 46 gradually increases.

  At this time, when the air in the first air chamber 45 is compressed by the first piston portion 62 and becomes higher than the atmospheric pressure, the third valve body 93 has the second on-off valve 93c in the first air chamber 45. It is pressed by the air and moves in a direction away from the third valve seat 85 to be in an open state. At the same time, the first on-off valve 93b is closed. Accordingly, the first air chamber 45 communicates with the mixing chamber 48 via the groove portion of the second fitting portion 67, and the air in the first air chamber 45 moves to the mixing chamber 48.

  When the foam agent 200 in the liquid chamber 47 is compressed by the second piston portion 63 and becomes higher than the atmospheric pressure, the first valve body 91 is moved toward the first valve seat 55 by the foam agent 200 in the liquid chamber 47. Pressed. Further, the second valve body 92 is pressed by the foam agent 200 in the liquid chamber 47 in a direction opposite to the moving direction of the second piston portion 63, in other words, in a direction away from the second valve seat 83. The valve body 92a is separated from the valve seat 83 and is opened. Thereby, the liquid chamber 47 communicates with the mixing chamber 48, and the foam agent 200 in the liquid chamber 47 moves to the mixing chamber 48. By the movement of the air in the first air chamber 45 and the foam agent 200 in the liquid chamber 47, air is mixed in the foam agent 200 in the mixing chamber 48.

  Thereafter, when the first piston portion 62 and the second piston portion 63 reach the bottom dead center, the volumes of the first air chamber 45 and the liquid chamber 47 are minimized, and the volumes of the second air chamber 46 are maximized. Further, the urging member 44 is pressed and compressed by the first seat surface portion 84 of the second piston portion 63.

  When the pressure of the nozzle 16 is released after the nozzle 16 and the piston 42 are moved to the bottom dead center, the compressed urging member 44 is expanded by the restoring force, and the second piston portion 63 is urged through the first seat surface portion 84. To do. Thereby, the nozzle 16 and the piston 42 move toward the top dead center.

  Specifically, the first piston portion 62 and the second piston portion 63 move toward the top dead center, and the volumes of the first air chamber 45 and the liquid chamber 47 gradually increase. Further, when the first piston part 62 and the second piston part 63 move toward the top dead center, the volume of the second air chamber 46 gradually decreases.

  At this time, the inside of the first air chamber 45 becomes negative pressure by the movement of the first piston portion 62. When the pressure in the first air chamber 45 becomes lower than the pressure in the second air chamber 46, the first on-off valve 93 b of the third valve body 93 is pressed by the air in the second air chamber 46 and the connecting portion 72. It moves to the direction which leaves | separates from, and it will be in an open state. At the same time, the second on-off valve 93c is closed. As a result, the first air chamber 45 and the second air chamber 46 communicate with each other, and the air in the second air chamber 46 moves into the first air chamber 45.

  Further, when the second piston part 63 moves, the second valve body 92 comes into contact with the second valve seat 83 and is closed, and the volume of the liquid chamber 47 increases, the pressure in the liquid chamber 47 is changed to the container body 2. The first valve body 91 is separated from the first valve seat 55 and opened by the pressure of the foam agent 200 in the tube body 4. Thereby, the foam agent 200 in the container body 2 moves into the liquid chamber 47.

  Thereafter, when the first piston portion 62 and the second piston portion 63 reach the top dead center, the volumes of the first air chamber 45 and the liquid chamber 47 are maximized, and the volumes of the second air chamber 46 are minimized.

  By such reciprocation of the piston 42 between the top dead center and the bottom dead center, the foam agent 200 and the air in the container body 2 are supplied to the mixing chamber 48. In addition, the foam agent 200 mixed with air in the mixing chamber 48 passes through the first porous body 18 in the discharge flow path 34, and the foam formed by the foam agent 200 and air is refined to be uniform. Bubbles are formed. Thereby, the foam agent 200 becomes foamy and is discharged from the fourth mesh 19c.

  According to the discharge container 1 configured in this way, air is mixed by providing four meshes 18b, 19b, 18c, and 19c in the discharge flow path 34 on the secondary side of the mixing chamber 48 of the pump body 3. The foam of the formed foam agent 200 can be made fine, and the foam quality of the discharged foam can be improved.

  Further, the discharge container 1 has a distance L1 between the openings provided with the first mesh 18b and the second mesh 18c of the first porous body 18, and the third mesh 19b and the fourth mesh 19c of the second porous body 19 It is configured to be longer than the distance L2 between the provided openings. In addition, the first mesh 18b of the first porous body 18 has a coarser mesh than the second mesh 18c.

  With this configuration, the distance L1 between the primary mesh 18b on the primary side and the second mesh 18c on the secondary side is relatively long, thereby increasing the resistance and decreasing the flow velocity, thereby reducing the secondary mesh 2c on the secondary side. It is possible to reduce the resistance applied to as much as possible. Further, since the foam-like foam agent 200 that passes through the first porous body 18 is the foam agent 200 supplied from the mixing chamber 48, the diameter of the foam is large. For this reason, by increasing L1, It is possible to reduce the diameter of the bubbles by breaking the large bubbles while passing through the porous body 18. This also reduces the resistance when passing through the second mesh 18c on the secondary side.

  In addition, since the foam agent 200 that has passed through the first porous body 18 is in a state in which the diameter of the bubbles is reduced to some extent, the liquid flows in with the diameter of the bubbles being reduced to some extent. By shortening L2 of this, the distance which passes may be short and it can prevent that the foam agent 200 remains in the 2nd porous body 19. FIG. As a result, it is possible to prevent dripping from occurring due to the remaining foam agent 200 and to prevent clogging caused by drying of the remaining foam agent 200.

  Moreover, it becomes possible to make the texture of a bubble fine by making L2 of the 2nd porous body 19 into 5 mm or more and less than 10 mm. In this embodiment, the distance L1 between the upstream porous body and the downstream porous body of the first foam member is 14.4 mm, and the distance L2 between the upstream porous body and the downstream porous body of the second foam member is 6.5 mm. Yes.

  The second porous body 19 has a configuration in which the inner diameter gradually expands from the primary side to the secondary side at a diameter expansion rate W of 8% to 25%, so that the secondary porous body 19 is more secondary than the inner diameter d3 of the opening on the primary side. The inner diameter d4 on the side is configured to be large. With this configuration, it is possible to prevent dripping and clogging in the second porous body 19 and improve the foam quality.

  In particular, the configuration in which the distance L2 from the upstream inlet of the second foaming member to the downstream porous body and the diameter expansion rate W are set in the above ranges is a foam containing a nonionic surfactant having a relatively low foaming property. Even if it is the agent 200, it is preferable and advantageous for discharge | emission of the foam of quality foam quality, preventing clogging and dripping.

  Further, the discharge container 1 is configured such that the rate of change C of the primary-side inner diameter d3 of the second porous body 19 with respect to the secondary-side inner diameter d2 of the first porous body 18 is in the range of −30% to 50%. Here, when C is less than −30%, the inner diameter d3 on the primary side of the second porous body 19 becomes too small with respect to the inner diameter d2 on the secondary side of the first porous body 18. For this reason, the pressure received from the foam-like foam agent 200 on the secondary side is increased due to the resistance received from the flow path, the foam may be broken, or the foam may be fused to generate coarse foam. There is a risk that the foam quality may deteriorate. If C exceeds 50%, the inner diameter d3 on the primary side of the second porous body 19 becomes too large with respect to the inner diameter d2 on the secondary side of the first porous body 18, so that the foam agent 200 from the nozzle portion 36 is increased. The amount of foamed material of the foam agent 200 remaining in the second porous body 19 after discharging is increased.

  For this reason, there is a possibility that dripping occurs or the remaining foam agent 200 is dried and the third mesh 19b and the fourth mesh 19c are clogged. However, in the discharge container 1 used for the foam agent 200 of the present embodiment, the foam agent containing the nonionic surfactant having a relatively low foaming property by setting the change rate C in the above range. Even so, it is possible to discharge high quality foam while preventing clogging and dripping.

Furthermore, the first porous body 18 and the second porous body 19 are configured to have the change rate C and the diameter expansion rate W, d1 and d2 are 6.35 mm, d3 is 4.45 mm, and d4 is It is configured to be 4.9 mm. The opening ratio of the first mesh 18b is set to 52%, the opening ratio of the second mesh 18c is set to 42%, the opening ratio of the third mesh 19b is set to 52%, and the opening ratio of the fourth mesh 19b is set to 52%. Is done. Thus, each mesh 18b, 18c, 19b, the opening area from the primary side of the 19c secondary side, in ^{order, 16.5mm 2, 13.3mm 2, 8.1mm} 2, with decreases and 7.9 mm ^2, The meshes 18b, 18c, 19b, and 19c are alternately arranged with coarse and fine eyes. As a result, the flow path resistance gradually increases, and the foam of the foam agent 200 is alternately refined with a coarse mesh and a fine mesh so that the foam breaks or the bubbles are fused and coarse. Bubbles can be prevented from being generated.

  Further, by using a solubilized external composition characterized by containing a nonionic surfactant and a polyhydric alcohol as the foam agent 200 used in the discharge container 1, a foam with a better foam quality is used. And foam retention is improved.

  Thereby, it is preferable that the foam agent 200 is a medical drug suitable for the treatment of skin diseases such as atopic dermatitis and psoriasis as the composition for external use. Since it becomes a composition for external use, when the composition is applied to the affected area, foam retention is improved, and flow from the applied affected area can be prevented as much as possible.

  As described above, according to the discharge container 1 that discharges the foam agent 200 according to an embodiment of the present invention, foam retention is good and high-quality foam can be formed.

  Next, an evaluation test of the discharge container 1 and the foam agent 200 configured as described above will be described.

[Method for preparing foam agent]
According to the prescription shown in Table 1 and Table 2, as an example of foam agent 200, while preparing the composition for external use which concerns on Example 1 thru | or Example 5, it compares with comparative example 1 thru | or comparative example 3 compared with an example of foam agent 200. Such an external composition is prepared. As a specific preparation method, each formulation component was weighed, mixed, heated, stirred at 80 ° C., dissolved, and cooled to room temperature with stirring to obtain each composition.

  In addition, the prescription component in Table 1 is shown in mass%. Moreover, the nonionic surfactant and the ionic surfactant used the thing of Nikko Chemicals Corporation.

[Discharge container]
In this evaluation test, the discharge container 1 as an example and the discharge container as a comparative example were used.

  As for the discharge container 1 of an Example, the 1st porous body 18 and the 2nd porous body 19 have the following structures. Inner diameters d1 and d2 of both openings of the first holder 18a are configured to be 6.35 mm. The inner diameter d3 of the primary side opening of the second holder 19a is 4.45 mm, and the inner diameter d4 of the secondary side opening is 4.9 mm. The first mesh 18b and the third mesh 19b are provided with a mesh having a mesh number of 100, and the second mesh 18c and the fourth mesh 19c are provided with a mesh having a mesh number of 200. That is, the discharge container 1 according to the embodiment has a configuration including four meshes in which meshes having a coarse mesh and fine meshes are alternately arranged from the primary side to the secondary side.

  The discharge container of the comparative example uses the same first porous body 18 as the discharge container 1 of the embodiment, and has only the second holder 19a without the third mesh 19b and the fourth mesh 19c. That is, the discharge container of the comparative example has a configuration having two meshes in which a mesh having a coarse mesh and a fine mesh are sequentially arranged from the primary side.

  Subsequently, each prepared composition was filled in the discharge container 1 of these Examples and the discharge container of the comparative example, respectively, and the external composition containing a discharge container was comprised.

[Evaluation Test 1]
As the evaluation test 1, the compositions for external use of Examples 1, 2, 4 and Comparative Example 3 were respectively discharged from the discharge container 1 of the example and the discharge container of the comparative example, and the foaming of the discharged external composition was evaluated.

[Results of Evaluation Test 1]
The external composition of Example 1 discharged from the discharge container 1 of the example and the discharge container of the comparative example in FIG. 2 was discharged from the discharge container 1 of the example and the discharge container of the comparative example, respectively, in FIG. The external composition of Example 4 in which the external composition of Example 2 was discharged from the discharge container 1 of the example and the discharge container of the comparative example in FIG. 4, respectively, and the discharge container 1 of the example and the comparative example of FIG. The external composition of the comparative example 3 each discharged from the discharge container is shown.

  As shown in FIG. 2 to FIG. 5, the foams obtained by discharging the compositions for external use of Examples 1, 2, 4 and Comparative Example 3 from the discharge container 1 of the Examples are the Examples 1, 2, 4 and Comparative. Compared to the foamed material discharged from the discharge container of the comparative example, the external composition of Example 1 had better foaming. From this, it was found that the discharge container 1 using four meshes had better foaming than the discharge container using two meshes.

  Further, as shown in FIG. 2 to FIG. 5, the nonionic surfactants of Examples 1, 2, and 4 discharged from the discharge container 1 of the examples and the composition for external use containing polyhydric alcohol. The foam was higher in height and held in a narrower range than the foam made of the composition for external use of Comparative Example 3 discharged from the discharge container 1. As is clear from this, the compositions for external use of Examples 1, 2, and 4 had better foaming properties than the composition for external use of Comparative Example 3.

  On the other hand, the composition for external use of Comparative Example 3 other than polyoxyethylene alkyl ether as the nonionic surfactant was poor in foaming and was unsuitable as the composition for external use used in the discharge container 1 of the present invention.

  From these things, as a composition for external use which is the foam agent 200, the composition (formulation example) containing a nonionic surfactant and a polyhydric alcohol is used, and it discharges using the discharge container 1, It is favorable. It was found to have foaming properties.

[Evaluation Test 2]
As an evaluation test 2, the foams obtained by discharging the compositions for external use of Examples 1 to 5 and Comparative Examples 1 and 2 from the discharge container 1 of the Example and the discharge container of the Comparative Example were each placed on a glass plate inclined by 20 °. .3 g, the time taken for the foam to move 10 cm was measured, and the flow rate of the foam was determined.

[Results of Evaluation Test 2]
FIG. 6 shows the relationship of the speed at which the foams of the compositions for external use of Examples 1 to 5 and Comparative Examples 1 and 2 discharged from each discharge container move 10 cm on a glass plate inclined by 20 °. In FIG. 6, the composition for external use of Example 1 is shown as Formulation Example 1, and similarly, the composition for external use of each Example is shown as Formulation Example 2 to Formulation Example 5. As shown in FIG. 6, the foams of the external compositions of Examples 1 to 5 move 10 cm on the glass plate inclined by 20 ° compared to the foams of the external compositions of Comparative Examples 1 and 2. The speed was slow. In addition, it shows that foam | bubble is difficult to flow and foam retention is so favorable that the speed | rate of movement of foam is slow.

  The nonionic surfactants of Examples 1 to 5, in particular, two or three nonionic surfactants including lauromacrogol (BL-9EX), which is a polyoxyethylene alkyl ether, and a polyhydric alcohol. The foamed material comprising the external composition contained therein had good foam retention.

  On the other hand, the composition for external use of the comparative example 1 which does not contain a polyhydric alcohol but contains only a nonionic surfactant and water, and contains an ionic surfactant and a polyhydric alcohol without a nonionic surfactant. The composition for external use of Comparative Example 2 was unsuitable as the foam of the present invention because the formed foam moved at a speed higher than 2.0 mm / sec in any of the discharge containers.

  Moreover, in any composition for external use, the discharge container of the comparative example using two meshes 18b and 18c is used by using four meshes 18b, 18c, 19b and 19c like the discharge container 1 of the example. There was a tendency for the moving speed to become slower. Particularly in the composition for external use of Example 5, in the discharge container of the comparative example, the moving speed of the foam was faster than 2.0 mm / sec and the foam retention was poor, whereas in the discharge container 1 of the example, Also in all the external compositions of Examples 1 to 5, it was found that the moving speed was slower than 2.0 mm / sec and the foam retention was good.

[Evaluation Test 3]
As the evaluation test 3, the discharge container 1 having four meshes 18b, 18c, 19b, and 19c is used, and the inner diameter d2 of the secondary side opening of the first holder 18a and the inner diameter of the secondary side opening of the second holder 19a. The discharge containers 1 of Examples 6 to 11 and the discharge containers 1 of Comparative Examples 4 and 5 having d3 as the inner diameter shown in Table 3 were used.

  The foams of the external composition of Example 1 were discharged from the discharge containers 1 of Examples 6 to 11 and the discharge containers 1 of Comparative Examples 4 and 5, and the foam quality of the foams was evaluated. In addition, the discharge container 1 that discharged the foam was left for 30 minutes, and the presence or absence of liquid dripping from the nozzle portion 36 and the presence or absence of clogging of the fourth mesh 19c were evaluated.

  In the first holder 18a, the inner diameters d1 and d2 of the openings on both the primary side and the secondary side are the same, and the diameter expansion rate W of the second holder 19a is all set to 10%. Moreover, the discharge container 1 of Example 6 has the same structure as the discharge container 1 of the Example of the evaluation tests 1 and 2 mentioned above.

[Results of Evaluation Test 3]
As shown in Table 3, in the discharge containers 1 of Examples 6 to 11, the foam quality of the discharged external composition was good, and neither dripping nor clogging occurred.

  In the discharge container 1 of Comparative Example 4, there was no occurrence of dripping or clogging, but the discharged foam was coarse foam and the foam quality was poor. In the discharge container 1 of Comparative Example 5, although the foam quality of the discharged foam was good, dripping occurred and clogging occurred in part of the mesh at the nozzle tip.

  From these things, it has favorable foamability by discharging the composition containing a nonionic surfactant and a polyhydric alcohol to the composition for external use which is the foam agent 200 using the discharge container 1. It was found.

  As described above, as shown in the results of Evaluation Test 1 and Evaluation Test 2, the first porous body 18 is provided with two meshes 18b and 18c, and the second porous body 19 is provided with two meshes 19b and 19c. It was shown that a combination of the container 1 and a solubilized external composition containing a nonionic surfactant and a polyhydric alcohol as the foam agent 200 can discharge good-quality foam.

  Further, as shown in the result of the evaluation test 3, the rate of change of the inner diameter d3 of the primary side opening of the second porous body 19 with respect to the inner diameter d2 of the secondary side opening of the first porous body 18 of the discharge container 1 is − It was shown that the composition of 30% ≦ C ≦ 50% makes it possible to improve the foam quality of the discharged foamed external composition and to prevent dripping and clogging.

  In addition, this invention is not limited to embodiment mentioned above. In addition, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Discharge container, 2 ... Container body, 3 ... Pump body, 4 ... Tube, 11 ... 1st fixing | fixed part, 12 ... Male screw part, 15 ... Support part, 16 ... Nozzle, 17 ... Pump part, 18 ... 1st 1 porous body, 18a ... 1st holder, 18b ... 1st mesh, 18c ... 2nd mesh, 19 ... 2nd porous body, 19a ... 2nd holder, 19b ... 4th mesh, 19b ... 3rd mesh, 19c ... 1st 4 meshes, 21 ... first fixed part, 22 ... first guide part, 23 ... second fixing part, 25 ... female screw part, 31 ... outer cylinder part, 32 ... inner cylinder part, 33 ... top surface part, 34 ... Discharge flow path 35 ... first flow path section 36 ... nozzle section 39 ... second flow path section 41 ... cylinder 42 ... piston 43 ... valve section 44 ... biasing member 45 ... first air chamber 46 ... second air chamber, 47 ... liquid chamber, 48 ... mixing chamber, 51 ... first cylinder, 51a ... hole, 52 ... second , 52a ... seat surface, 53 ... second fixed part, 53a ... seal member, 53b ... flange part, 54 ... mounting part, 55 ... first valve seat, 61 ... rod part, 62 ... first piston part, 63 ... 2nd piston part, 65 ... 1st fitting part, 65a ... Projection part, 66 ... Mixing part, 66a ... Hole part, 66b ... Projection part, 67 ... 2nd fitting part, 71 ... 1st sliding part 71a ... trunk part, 71b ... end part, 72 ... coupling part, 73 ... hole part, 74 ... groove part, 81 ... second fitted part, 82 ... second sliding part, 83 ... second valve seat, 84 ... 1st seat surface part, 85 ... 3rd valve seat, 91 ... 1st valve body, 92 ... 2nd valve body, 92a ... Valve body part, 92b ... Shaft body, 92c ... Projection part, 93 ... 3rd valve body, 93a ... fixed body, 93b ... first on-off valve, 93c ... second on-off valve, 94 ... second guide part, 94a ... second seat surface part, 94b ... groove part, 94c ... projection part, 200 Foams.

Claims (10)

A container body for storing the foam agent;
A cylinder that forms an air chamber and a liquid chamber, and a pump unit that is formed so as to reciprocate within the cylinder and includes a piston that compresses the air chamber and the liquid chamber;
A nozzle that drives the piston by reciprocating and has a discharge passage for the foam agent supplied from the pump unit;
A mixing chamber that is provided on the secondary side of the pump unit and mixes the foam agent discharged from the pump unit with the air in the air chamber;
A cylindrical first holder, a first mesh provided in an opening on a primary side of the first holder, and a second mesh provided in an opening on a secondary side of the first holder; A first porous body provided in the path;
A cylindrical second holder, a third mesh provided in an opening on the primary side of the second holder, and a fourth mesh provided in an opening on the secondary side of the second holder; A second porous body provided on the secondary side of the first porous body of the path;
A discharge container comprising:   The change rate C of the inner diameter of the primary side opening of the second holder with respect to the inner diameter of the secondary side opening of the first holder is configured to be -30% to 50%. Discharge container. The first mesh is configured to be coarser than the second mesh,
The discharge container according to claim 2, wherein the third mesh has a coarser mesh than the fourth mesh.   The opening area on the primary side of the first porous body, the opening area on the secondary side of the first porous body, and the opening area on the secondary side of the second porous body on the primary side of the second porous body are sequentially reduced. The discharge container according to claim 3.   The discharge container according to claim 1, wherein the first holder is configured to be longer than the second holder.   2. The discharge container according to claim 1, wherein the diameter of the second holder gradually increases from the opening on the primary side toward the opening on the secondary side. A discharge container according to any one of claims 1 to 6,
The foam agent containing a nonionic surfactant and a polyhydric alcohol;
A foaming agent containing a discharge container, comprising:   The foaming agent in a discharge container according to claim 7, wherein the nonionic surfactant is at least one nonionic surfactant containing polyoxyethylene alkyl ether.   The foam agent in a discharge container according to claim 7, wherein the foam agent contains the polyhydric alcohol in a total amount of 10% by mass or more.   The foam agent in a discharge container according to claim 7, wherein the foam agent is a composition for external use which is an ethical drug.