WO2020218156A1

WO2020218156A1 - Foam ejecting dispenser and foam ejecting container

Info

Publication number: WO2020218156A1
Application number: PCT/JP2020/016735
Authority: WO
Inventors: 愛理小山; 佐々木　剛; 征一袴田
Original assignee: 株式会社資生堂
Priority date: 2019-04-22
Filing date: 2020-04-16
Publication date: 2020-10-29
Also published as: JP2020175940A

Abstract

The present invention relates to a foam ejecting dispenser (100) having a foaming member (40) that foams a mixed liquid chemical in which a liquid chemical and air are mixed together, wherein the foaming member is a mesh having a contact angle of 115° to 179° with water. The foam ejecting dispenser of the present invention can suppress occurrence of clogging in the foaming member even if left for a long time.

Description

Foam discharge dispenser and foam discharge container

The present invention relates to a foam discharge dispenser having a foaming member for foaming a mixed liquid agent in which a liquid agent and a gas are mixed, and a foam discharge container having a foam discharge dispenser.

In a foam discharge container, generally, a liquid supplied from the inside of a liquid cylinder and an air supplied from the inside of an air cylinder are mixed, and the mixed fluid is foamed by passing through a foaming means. , It is known that the foaming means is formed of a mesh (for example, Patent Document 1).

Further, Patent Document 2 in which the foamed member is composed of a single porous foam such as urethane foam and Patent Document 3 in which the foamed member is composed of a non-woven fabric are known.

Japanese Patent Application Laid-Open No. 2012-157822 Japanese Patent No. 4729569 Japanese Patent Application Laid-Open No. 2015-227183

However, regardless of which of the mesh, urethane foam, non-woven fabric, etc. shown in Patent Documents 1 to 3 is used for the foam member, if the foam discharge container is left in a high temperature and high humidity environment for a long time, the liquid agent solidifies on the foam member. As a result, the foamed member was clogged, and the pump could not be pushed and the contents did not come out.

Therefore, in view of the above circumstances, an object of the present invention is to provide a foam discharge dispenser capable of suppressing the occurrence of clogging in the foam member even if it is left for a long time.

In order to solve the above problems, in one aspect of the present invention,
A foam discharge dispenser having a foaming member that foams a mixed liquid agent in which a liquid agent and a gas are mixed.
The foam member provides a foam discharge dispenser, which is a mesh having a contact angle with water of 115 ° to 179 °.

According to one aspect, the foam discharge dispenser can suppress the occurrence of clogging in the foam member even if it is left for a long time.

The whole sectional view of the foam discharge container which concerns on one Embodiment of this invention. Explanatory drawing of the contact angle of a droplet with respect to a solid surface which is hard to get wet. Explanatory drawing of the contact angle of a droplet with respect to a solid surface which is easily wet. The figure which shows the state of the water drop at the time of measuring the contact angle of the mesh on the upstream side of the comparative example. The figure which shows the state of the water droplet when the contact angle of the mesh on the downstream side of the comparative example was measured. The figure which shows the state of the water droplet when the contact angle on the mesh on the upstream side of the water-repellent resin of this invention was measured. The figure which shows the state of the water droplet when the contact angle on the mesh on the downstream side of the water-repellent resin of this invention was measured. The figure which shows the state of the water drop at the time of measuring the contact angle on the mesh on the upstream side of the metal of this invention. The figure which shows the state of the water drop at the time of measuring the contact angle on the mesh on the downstream side made of metal of this invention. The figure which shows the foam discharged from the foam discharge container using the nylon mesh of the comparative example. The figure which shows the foam discharged from the foam discharge container using the mesh of the water-repellent resin of this invention. The figure which shows the foam discharged from the foam discharge container using the metal mesh of this invention. Experimental results of pressing sensation when the comparative example and the foam discharge container of the present invention were left unattended. A table showing each size and contact angle of a mesh suitable for application to a foam discharge container according to the present invention.

Hereinafter, a mode for carrying out the present invention will be described with reference to the drawings. In all drawings, similar components are designated by the same reference numerals, and duplicate description will be omitted as appropriate.

<Structure of foam discharge container>
First, the overall configuration of the foam discharge container of the present invention will be described with reference to FIG. FIG. 1 is an overall view of a foam discharge container 1 according to an embodiment of the present invention.

As shown in FIG. 1, the foam discharge container 1 includes a container body 900 that stores the liquid agent L at normal pressure, and a foam discharge dispenser 100 that is a cap portion that is detachably attached to the container body 900. It is composed of.

The container body (bottle part) 900 stores the liquid liquid agent L. The container body 900 has a body portion 91, a shoulder portion 92, a mouth portion 93, and a bottom portion 94. The bottom portion 94 closes the lower end with the body portion 91, and the body portion 91 and the bottom portion 94 serve as a liquid storage portion. The shoulder portion 92 is connected to the upper end of the body portion 91. The mouth portion 93 is connected to the inner end of the shoulder portion 92 and has a cylindrical shape having a diameter smaller than that of the body portion 91, and the upper surface of the mouth portion 93 is open.

The body shape of the container body 900 shown in FIG. 1 shows an example in which the body 91 is cylindrical, but the shape of the body 91 is such that if the mouth 93 is substantially cylindrical, the body 91 is cylindrical. May have any shape such as a square cylinder, a cone, a gourd, and an egg.

The foam discharge dispenser 100 is used by being attached to a container body 900 for storing the liquid agent L. When the foam discharge dispenser 100 having a pump function is attached to the container body 900, the foam discharge container 1 functions as a push-type pump container.

Specifically, the foam discharge dispenser 100 includes a delivery mechanism 10 having a pump function, a gas-liquid mixing unit 20, an injection member 30 which is a foam flow path, a foam member 40 having

meshes

41 and 42, and a discharge port. It includes a head portion 50 including 51 and a screw cap portion 60.

In the foam discharge dispenser 100, the liquid agent L is sent out from the container body 900 toward the discharge port 51 by the delivery mechanism 10, and the liquid agent L and the gas are mixed in the gas-liquid mixing unit 20 to form a coarsely foamed mixed liquid agent. It becomes M. Then, due to the delivery force of the delivery mechanism 10, the mixed liquid agent M mixed with the gas in the gas-liquid mixing unit 20 is passed through the injection member 30 and flows toward the discharge port 51 of the head unit 50. At this time, the foaming member 40 foams the mixed liquid M finely and uniformly inside the injection member 30. Further, the foaming liquid agent F is made to flow inside the head portion 50 by the delivery force of the delivery mechanism 10, and the foamed liquid agent F is discharged from the discharge port 51.

The delivery mechanism 10 includes a pump function for a liquid agent and a gas, and when the head portion 50 is pressed, the liquid agent L is sucked from the container body 900 toward the discharge port 51 (flow passage). Send out. During this delivery period, the foam discharge dispenser 100 foams the liquid agent and discharges the foamed liquid agent.

In the present specification, the non-foam-like liquid liquid agent stored in the container body 900 is referred to as L, the liquid agent after gas-liquid mixing is referred to as M, and the foam-like liquid agent F (foam) after the foam flow path is referred to. However, each will be described separately.

The head portion 50 provided above the foam discharge dispenser 100 has a discharge nozzle 52 in which a discharge port 51 is formed, an operation receiving portion 53, a flow pipe 54, and an outer cylinder 55. The operation receiving unit 53 is the upper surface of the head unit 50, and when the user discharges bubbles, the operation receiving unit 53 comes into contact with the operation receiving unit 53 to receive the pressing operation. The flow pipe 54 and the outer cylinder 55 are cylindrical (circular tubular) members that hang down from the operation receiving portion 53 and extend in the vertical direction. In this configuration example, the flow pipe 54, which is an inner cylinder, extends downward longer than the outer cylinder 55.

Further, an injection member 30 which is a tubular bubble flow path is provided on the inner peripheral surface of the flow pipe 54. The injection member 30 has a tubular shape having different shapes in the vertical direction, with the axial direction extending in the vertical direction. The injection member 30 is connected to a diameter-expanding ring 32 whose diameter gradually increases from the upstream side (lower side) to the outflow side (upper side) and the downstream end of the diameter-expanding ring 32, and has a diameter larger than that of the downstream end. It is composed of a large diameter ring 31 having a large diameter. The outer circumference of the large-diameter ring 31 of the injection member 30 is fitted on the inner peripheral surface of the flow pipe 54 of the head portion 50.

Further, inside the injection member 30, a foam member 40 having an upstream mesh 41, a downstream mesh 42 and a flow cylinder 43 is fitted. The

meshes

41 and 42 are stretched so as to be orthogonal to the axial direction of the flow cylinder 43.

Meshes

41 and 42 are adhered to the flow cylinder 43. For example, even if the flow cylinder 43 is divided into two upper and lower bodies so as to be adhered to the

mesh

41 and 42, respectively, and attached to the injection member 30. Good.

Further, the screw cap portion 60 is attached to the mouth portion 93 of the container body 90 in the foam discharge dispenser 100. Specifically, the screw cap portion 60 includes a mounting portion 61, a cap shoulder portion 62, and an upright cylinder portion 63. The mounting portion 61 has a cylindrical shape and is detachably mounted on the mouth portion 93 of the container body 900 by screwing or the like.

Further, when assembling the foam discharge dispenser 100, the head portion 50 has a screw cap portion so that the flow pipe 54 of the head portion 50 and the outer cylinder 55 sandwich the standing cylinder portion 63 of the screw cap portion 60 from the inside and the outside. Engage with respect to 60.

Further, when the foam discharge dispenser 100 is attached to the container body 900, the mounting portion 61 of the screw cap portion 60 is mounted on the mouth portion 93 of the container body 900, so that the entire foam discharge dispenser 100 is attached to the mouth portion 93. Once mounted, the foam discharge dispenser 100 closes the opening of the container body 900.

The foam discharge dispenser 100 has a liquid agent pump function by a delivery mechanism 10 that operates in conjunction with a pressing operation of the head portion 50, and a gas pump function by moving the position of the head portion 50 with respect to the screw cap portion 60.

Next, the detailed configuration of the transmission mechanism 10 will be described. In the foam discharge dispenser 100, the delivery mechanism 10 includes a cylinder portion 110, a piston guide 120, a liquid piston 130, a poppet 140, a gas piston 150, and a ball valve 160.

The cylinder portion 110 is fixed to the screw cap portion 60, and a lower part is immersed in the liquid to inject the liquid into the inside, and the gas is temporarily stored in the other upper part. Specifically, the cylinder portion 110 integrally comprises an air cylinder portion 111, an annular connecting portion 113, and a liquid cylinder portion 114.

The upper end of the air cylinder portion 111 is fixed to the lower surface side of the cap shoulder portion 62 of the screw cap portion 60, and extends in the vertical direction. The internal space of the container body 900 is sealed except for the portion of the air valve 170 so that the foam discharge dispenser 100 keeps the container body 900 in a closed state. Further, a horizontal hole 112 is formed in the side wall-shaped air cylinder portion 111.

The liquid cylinder portion 114 is a tubular suction nozzle that sucks the liquid liquid agent L of the container body 900, and extends in the vertical direction. The liquid cylinder portion 114 is composed of a small diameter portion at the tip, a large diameter portion on the upper side, and a diameter reduction portion 115 that connects the small diameter portion and the large diameter portion. The inflow / stop of the liquid is controlled by contacting / separating the inner tapered surface of the diameter-reduced portion 115 and the valve 141 of the poppet 140.

The annular connecting portion 113 is an inner bottom portion (middle plate) of the cylinder portion 110, and is a portion that connects the lower end portion of the air cylinder portion 111 and the upper end portion of the liquid cylinder portion 114. The liquid cylinder portion 114 hangs down from the inner peripheral edge of the annular connecting portion 113.

The piston guide 120 is a tubular member extending in the vertical direction at the center, and a tubular standing portion 121 and an annular standing portion 122 are integrally provided at the upper end thereof. The annular upright portion 122 stands upward from the inner end of the inner peripheral annular projection protruding inward from the inner peripheral surface of the cylinder. Further, the lower end of the piston guide 120 is located on the inner circumference near the upper end of the liquid cylinder portion 114. Further, a guide protrusion 123 is provided on the outer periphery of the piston guide 120 so that the lower end and the upper surface of the inner peripheral wall 152 of the gas piston 150 come into contact with each other during standing. Further, an inner rib 124 having a step at which the lower end contacts the upper end of the poppet 140 is provided on the upper part of the inner circumference below the inner peripheral annular projection of the piston guide 120.

The vertical position of the tubular upright portion 121 at the upper end of the piston guide 120 is fixed with respect to the flow pipe 54 in a state of being internally fitted around the lower end of the flow pipe 54 of the head portion 50.

The liquid piston 130 is inserted into the inner peripheral side of the piston guide 120, and is fixedly provided at the lower end of the piston guide 120 so as to project downward from the piston guide 120. Therefore, the head portion 50, the piston guide 120, and the liquid piston 130 move up and down integrally with the liquid cylinder portion 114. The lower end portion of the liquid piston 130 and the liquid cylinder portion 114 are in close contact with each other to ensure airtightness at all times.

The poppet 140 is a rod-shaped member that extends vertically, and is inserted from the inside of the piston guide 120 to the inside of the liquid cylinder portion 114 in a state of penetrating the liquid piston 130. The poppet 140 can move up and down relatively with respect to the liquid piston 130 and the piston guide 120, and can also move up and down relatively with respect to the liquid cylinder portion 114. One end (lower end) of the poppet 140 is a valve 141 whose diameter is larger than that of the central shaft portion, and the other end (upper end) is a enlarged diameter portion whose diameter is expanded toward the outer peripheral side of the cylinder or a protrusion protruding toward the outer peripheral side. Is provided.

Further, a spring 180, which is a coryl spring that adjusts the force in the vertical direction, is provided so as to surround substantially the lower half of the shaft portion other than the valve 141 of the poppet 140.

Here, the gas piston 150 is arranged between the outer circumference of the piston guide 120 and the inner wall around the upper end of the air cylinder portion 111. The outer peripheral end of the gas piston 150 is a widened slide outer end wall 151, which is in close contact with the air cylinder portion 111, and the inner peripheral wall 152 on the inner peripheral side is relative to the piston guide 120. It is spread out and fitted in a loosely inserted state that can move up and down. In the stationary state, the slide outer end wall 151 closes the lateral hole 112 of the air cylinder portion 111 in the stationary state. Further, an upper hole 153 is formed in the vicinity of the inner peripheral wall 152 of the gas piston 150.

Further, an air valve 170 is provided on the outside of the inner peripheral wall 152 of the gas piston 150. When left standing, gas is stored in the space surrounded by the lower surface of the air valve 170, the lower surface of the gas piston 150, the air cylinder portion 111, and the annular connecting portion 113.

A ball valve 160 is provided on the inner circumference of the tubular standing portion 121 at the upper end of the piston guide 120 and above the annular standing portion 122. The ball valve 160 opens and closes the upper end of the annular standing portion 122. In the foam discharge dispenser 100, the outer peripheral surface of the diameter expansion ring 32 on the lower side of the injection member 30 mounted on the head portion 50 is fitted inside the tubular upright portion 121 at the upper end of the piston guide 120.

Here, the gas-liquid mixing portion 20 is, for example, an inner space around the ball valve 160 and surrounded by the tubular standing portion 121.

Then, the liquid agent M mixed with the gas in the gas-liquid mixing unit 20 passes through the injection member 30 and the

meshes

41 and 42 mounted on the head unit 50, and is further finely foamed.

Specifically, in the foaming member 40 in which the two

meshes

41 and 42 are provided inside, the upstream mesh (first mesh) 41 foams the mixed liquid M, and the downstream mesh (second mesh). ) 42 makes the bubbles finer and produces bubbles F to be discharged. Therefore, it is preferable that the opening of the downstream mesh 42 is finer than that of the upstream mesh 41.

As described above, when the liquid agent L flows inside the flow pipe 54 of the head portion 50 through the piston guide 120, the liquid agent F foamed by the

meshes

41 and 42 housed in the injection member 30 is headed. After flowing upward in the inner circumference of the upper part of the flow pipe 54 of the part 50, it flows along the discharge nozzle 52 extending in the lateral direction and is discharged from the discharge port 51.

(Flow of liquid / gas)
Here, the outline of the flow of liquid and gas will be described.

(Standing state)
In the stationary state in which the head portion 50 stands by without being pressed, the sucked liquid is sealed and held by the ball valve 160 at the upper end of the annular standing portion 122 of the piston guide 120. Further, the air valve 170 and the gas piston 150 are in contact with each other, and the airtight state is maintained. On the other hand, the lower end surface of the valve 141 at the lower end of the poppet 140 opens the inner tapered surface of the diameter-reduced portion 115 of the liquid cylinder portion 114.

(Push down)
During the period when the head portion 50 is pushed down, the piston guide 120 is pushed down in conjunction with the downward operation of the head portion 50, and the poppet is provided by the inner rib 124 provided on the upper inner peripheral side of the piston guide 120. By pushing down the protrusion around the upper end of the 140, the valve 141 at the lower end of the poppet 140 seals the inner tapered surface of the diameter-reduced portion 115 at the lower end of the liquid cylinder portion 114.

Further, by pushing down the head portion 50, the upper hole 153 remains closed by the air valve 170, and the upper surface of the guide protrusion 123 is separated from the lower end of the inner peripheral wall 152 of the gas piston 150, so that the upper hole 153 is stored in the air cylinder portion 111. The gas that has been generated is pushed out between the outer circumference of the piston guide 120 and the inner circumference of the inner peripheral wall 152.

The extruded air mixes with the liquid at the gas-liquid mixing section 20 near the ball valve 160 to form a mixed liquid M, which is foamed. Immediately after that, a mixture of liquid and air passes through the small diameter of the injection member 30 which is a bubble flow path, and by jet injection, it hits the

meshes

41 and 42 to be conditioned and discharged as bubbles F.

(Push back)
Then, after pushing down, the head portion 50 is automatically returned upward by the restoring force of the spring 180 surrounding the poppet 140. At this time, the ball seal by the upper ball valve 160 is closed, and the poppet seal by the poppet 140 at the lower end is opened, so that the liquid is sucked up.

At the time of this push-back, the air valve 170 opens apart from the gas piston 150 as the pressure of the air cylinder portion 111 drops, so that air is supplied into the air cylinder portion 111 through the upper hole 153.

Further, during the period in which the head portion 50 is moved by a predetermined height (for example, several mm) or more from the stationary state during pushing down and pushing back, the slide outer end wall 151 opens the lateral hole 112 of the air cylinder portion 111. Air is supplied to the container body 900 from the side hole 112.

In the above description, an example in which the liquid agent and the gas are sucked up, mixed and extruded by the manual pump type delivery mechanism 10 has been described, but the foam discharge container of the present invention is not limited to this example, and the liquid agent L is not limited to this example. It may be an electric dispenser that pumps and gas, respectively, mixes them, foams them, and discharges them. Alternatively, the foam discharge container may be a squeeze bottle configured to discharge foam by squeezing the container body.

Here, in FIG. 1, in the description of the configuration of the container body 900 and the foam discharge dispenser 100, the downward direction is the upstream side and the upward direction is the downstream side, but these directions are the container body 900 and the foam discharge dispenser 100. The foam discharge container 1 may be arranged downward or sideways for use without limiting the direction during production and use.

Here, if a general foam discharge container is left in a hot and humid environment for a long time, the contents will solidify, the mesh will be clogged, and the contents will not come out even if the head part is pushed. It could occur.

<Selection of foaming means>
Therefore, various materials have been proposed for the foaming means as the foam discharging container provided with the foaming means, and the invention of the present application is described as a method for preventing solidification of the foamed member without making a significant design change. They focused on the contact angle on the surface of the mesh that makes up the foam member.

Here, the contact angle (θ: Contact Angle) is a quantification of the degree of wetting, and is "the angle between the liquid surface and the solid surface at the place where the free surface of the static liquid contacts the solid wall (θ: Contact Angle). Take the corner inside the liquid) ".

When a liquid is dropped on a solid surface, the liquid is rounded by its own surface tension, and the angle θ between the tangent of the droplet and the solid surface shown in FIGS. 2A and 2B becomes the “contact angle”.

As shown in FIG. 2A, the closer the liquid in contact with the solid surface is to a sphere (circle), the larger the contact angle is and the more difficult it is to get wet, and as shown in FIG. 2B, the liquid in contact with the solid surface is crushed from the sphere. The flatter it is, the smaller the contact angle and the easier it is to get wet.

Here, as a comparative example, the contact angle in a configuration using a general nylon mesh, which is known to cause clogging when left for a long time, was measured.

FIGS. 3A and 3B show the state of water droplets measured at the contact angle of the mesh of the comparative example. FIG. 3A shows the mesh on the upstream side, and FIG. 3B shows the mesh on the downstream side and the state of water droplets on the upper side.

Table 1 shows the mesh configuration and contact angle measurement results used in the comparative example. As for the contact angle values in Table 1, as a contact angle measurement test, 2 μl of water droplets were dropped, and 1 second after the droplets were deposited, an image was acquired using DropMaster 501 manufactured by Kyowa Interface Science Co., Ltd., and the analysis software of the company was used. "FAMAS (interFAce Measurement & Analysis System) is used to calculate the contact angle, which is the average value of the results of five shootings and calculations.

Here, as a comparative example, as an example of the mesh having the dimensions shown in Table 1 above, a nylon mesh used in a general commercial product was used for the upstream mesh 41 and the downstream mesh 42.

Then, in order to increase the contact angle of the mesh, (1) use a water-repellent resin mesh (water-repellent resin mesh).
(2) Use a metal mesh,
It was investigated.

The same or similar openings were used so that the fineness of the foam would not deteriorate. Then, the contact angles of (1) the water-repellent resin mesh and (2) the metal mesh examined were measured.

FIGS. 4A to 4D show the state of water droplets measured at the contact angle of the mesh of the present invention. FIG. 4A is an upstream mesh made of water-repellent resin, FIG. 4B is a mesh downstream made of water-repellent resin, FIG. 4C is an upstream mesh made of metal, and FIG. 4D is a downstream mesh made of metal. Shows the state of water droplets on the side mesh.

Table 2 shows a comparative example and the measurement results of the mesh configuration and contact angle used in the present invention. As for the contact angle values in Table 2, as a contact angle measurement test, 2 μl of water droplets were dropped, and 1 second after the droplets were applied, an image was acquired using DropMaster 501 manufactured by Kyowa Interface Science Co., Ltd., and the analysis software of the company was used. It is the average value of the results of five shootings and calculations for which the contact angle was calculated using FAMAS.

As an example of the water-repellent resin mesh at the time of measurement, a water-repellent mesh is used for the polyester mesh, and the dimensions of the upstream mesh 41 and the downstream mesh 42 are as shown in the table. Further, as an example of the metal mesh at the time of measurement, SUS (stainless steel) is used, and the dimensions of the upstream mesh 41 and the downstream mesh 42 are as shown in the table.

It can be seen that the water-repellent resin mesh and the metal mesh examined this time have a larger contact angle than the existing mesh nylon mesh according to the comparative example with reference to Table 2.

In the above example, the "water-repellent mesh" is a wet method in which a spray coating or dipping method is applied to a general material (for example, a resin such as nylon or polyester), or a vacuum film forming apparatus. By applying an organic material (silicone) or an inorganic material (fluorine) by a dry method using a method such as, or by applying a water-repellent treatment by using a shrinkable plastic with fine wrinkles on the surface of a fluorine-processed resin. It was realized.

However, when a material with high water repellency is used as a single resin, it becomes a "water repellent resin mesh" even if it is not water repellent. A material having high water repellency as a single resin is, for example, a fluororesin such as Teflon (registered trademark). Examples of the fluororesin having high water repellency may be, for example, polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), ethylene tetrafluoride copolymer resin (ETFE), or the like. ..

<Foam quality of foam using the foaming means of the present invention>
5A to 5C show photographs of bubbles discharged from the foam discharge container. FIG. 5A shows the result of foam discharge from the foam discharge container using the nylon mesh of the comparative example, and FIG. 5B shows the result of foam discharge discharged from the foam discharge container using the water-repellent resin mesh. Yes, FIG. 5C shows the result of foam ejection discharged from the foam ejection container using the metal mesh.

Comparing FIGS. 5A, 5B and 5C, it can be seen that there is almost no difference in the quality of foam, and all of them are sufficiently foamed.

<Composition of liquid>
In the present embodiment, the liquid agent L has a higher viscosity than water. The viscosity of the liquid agent L before being mixed with air and foaming is not particularly limited, but can be, for example, 1 mPa · s or more and 200 mPa · s or less at 20 ° C. as measured by a B-type viscometer, and 2 mPa. -It is more preferable that it is s or more and 100 mPa · s or less.

In the present embodiment, the liquid agent 101 includes hand soap, washing pigment, cleansing agent, body soap, dishwashing liquid, hair styling product, shaving cream, skin cosmetics such as foundation and beauty essence, hair dye, and disinfectant. Various things used in the form of foam can be exemplified.

Here, in the liquid discharge container of the present invention, when the liquid agent used is a skin cleansing agent such as hand soap, face wash, cleansing agent, body soap, etc.
The composition of the skin cleanser is
It is known to contain (A) water (B) surfactant and (C) foam quality improver.

Here, the (B) surfactant comprises one or more selected from nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

The nonionic surfactant can be appropriately selected from compounds generally used as a nonionic surfactant, and for example, a polyoxyalkylene-added nonionic surfactant, a mono- or diethanolamide-based nonionic surfactant. Examples thereof include agents, sugar-based nonionic surfactants, and glycerin-based nonionic surfactants.

The anionic surfactant can be appropriately selected from compounds generally used as an anionic surfactant, and is a carboxylic acid salt type such as fatty acid soap, N-acylglutamate, alkyl ether acetic acid, α. -Examples include sulfonic acid types such as olefin sulfonates, alkane sulfonates and alkylbenzene sulfonic acids, sulfate ester salt types such as higher alcohol sulfates, and phosphoric acid ester salt types.

The cationic surfactant can be appropriately selected from compounds generally used as a cationic surfactant, and is an aliphatic amine salt, an alkyl quaternary ammonium salt, an aromatic quaternary ammonium salt, and a pyridinium salt. , Imidazolinium salt and the like.

The amphoteric surfactant can be appropriately selected from compounds generally used as amphoteric surfactants, but carbobetaine-type amphoteric surfactants such as alkylbetaine and alkylamide betaine, alkylsulfobetaines and alkylhydroxys. Examples thereof include sulfobetaine-type amphoteric surfactants such as sulfobetaine, phosphobetaine-type amphoteric surfactants, imidazoline-type amphoteric surfactants, and amide amino acid salts.

Examples of the alkyl betaine include betaine lauryldimethylaminoacetate. Examples of the alkylamide betaine include coconut oil fatty acid amide propyl betaine. Examples of the alkylsulfobetaine include coconut oil fatty acid dimethylsulfopropyl betaine. Examples of the alkylhydroxysulfobetaine include lauryldimethylaminohydroxysulfobetaine. Examples of the phosphobetaine-type amphoteric surfactant include lauryl hydroxyphosphobetaine. Examples of the imidazoline-type amphoteric surfactant include coconut oil alkyl-N-hydroxyethyl imidazolinium betaine and the like.

Further, the foam quality improving agent (C) can be appropriately selected from compounds generally used for foaming having excellent durability or elasticity, and for example, dimethyldialylammonium chloride / acrylamide copolymer weight. Coalescence, polyoxyethylene methyl glucoside, polyethylene glycol, etc. can be mentioned.

Commercially available products can be used as the dimethyldiallylammonium chloride / acrylamide copolymer, and specific examples thereof include Marcourt 550PR (dimethyldiallylammonium chloride: acrylamide = 30:70 (molar ratio), weight average molecular weight 1.6 million, rubri. (Zol), Marcourt 3330PR (acrylic acid: dimethyldialylammonium chloride: acrylamide = 34:31:35 (molar ratio), weight average molecular weight 1.5 million, manufactured by Lubrizol), Marcourt 740 (dimethyldialylammonium chloride: acrylamide = 24:76 (molar ratio), weight average molecular weight 120,000, manufactured by Lubrizol), Marcourt 2003PR (acrylic acid: dimethyldialylammonium chloride: acrylamide = 10:40:50 (molar ratio), weight average molecular weight 1.2 million, rubri Zol Co., Ltd.), Marcourt 280 (acrylic acid: dimethyldialylammonium chloride = 35:65 (molar ratio), weight average molecular weight 450,000, manufactured by Lubrizol), Marcourt 295 (acrylic acid: dimethyldialylammonium chloride = 5:95) (Mole ratio), weight average molecular weight 190,000, manufactured by Lubrizol) and the like.

Alkoxylated methyl glucosides are, for example, methylgluces-10, methylgluces-20, PPG-10 methylglucose ether, and PPG-20 methylglucose ether (from Lubrizol Advanced Materials, Inc., trade names Glucam® E10, Glucam, respectively. (Available under Registered Trademarks) E20, Glucam® P10, and Glucam® P20), including hydrophobically modified alkoxylated methyl glucosides such as PEG120 methyl glucose dioleate, PEG- 120 Methyl Glucose Trioleate and PEG-20 Methyl Glucose Sesquistearate (from Lubrizol Advanced Materials, Inc., trade names, Glucamate® DOE-120, Glucamate® LT, and Glucamate® SSE, respectively. (Available at -20), as well as mixtures thereof and the like.

Examples of polyethylene glycol include PEG-20000 (weight average molecular weight 20,000, manufactured by NOF CORPORATION).

Since these foam quality improving agents strengthen the film viscosity of individual bubbles when the film of the liquid agent swells on the mesh, the head portion 50 is pushed and the mixed liquid agent in which the liquid agent and the gas are mixed is a mesh. If it remains on the

mesh

41, 42 after passing through 41, 42, it causes solidification of the liquid agent. However, since it is for improving the foam quality at the time of foaming, it is necessary to mix a small amount.

The skin cleanser may also contain a moisturizer and other ingredients.
The moisturizing agent can be selected from those usually blended in cosmetics and the like, and is not particularly limited, but for example, a large amount of glycerin, propylene glycol, dipropylene glycol, 1,3-butylene glycol, ethylene glycol, sorbitol and the like. Propylene alcohol can be mentioned.
The other components are not particularly limited as long as the effects of the present invention are not impaired, and can be appropriately selected depending on the intended purpose. For example, viscosity regulators, solvents, pH regulators, vitamins, amino acids, etc. Anti-inflammatory agents, UV absorbers, cold sensation agents, antioxidants, colorants, fragrances, antiperspirants, bactericides, deodorants, preservatives, inclusion compounds, water-insoluble powders (inorganic powders, organics) Powder, etc.), etc.

<Observation of changes over time>
Here, an experiment was conducted in which the skin cleansing agent shown in Table 3 was used as the liquid agent L, and the change over time in the pressing sensation when different types of meshes were used was observed.

As a change over time, the same skin cleaning solution was put into all the containers as a liquid agent, and a foam discharge container using the nylon mesh of the comparative example shown in Table 1, the water-repellent resin mesh shown in Table 2, and the metal mesh (metal mesh) was used. , 10 each (N = 10) were prepared, left in an environment of 50 ° C., taken out at room temperature every other week, and the head portion 50 was pressed 5 times, and the pressing sensation at that time was measured.

FIG. 6 shows a comparative example and an experimental result of a pressing sensation when the foam discharge container of the present invention was left unattended. In the table of FIG. 6, ◯ indicates that it is within the allowable range, and × indicates that it is “abnormal”. The "abnormality" in this experiment indicates that the pressure on the head portion 50 became heavy (hard). At this time, if the pressure of the head portion 50 becomes heavy, a phenomenon occurs in which the discharged bubbles become watery or a large amount of coarse bubbles are mixed.

From FIG. 6, the foam discharge container using the water-repellent resin mesh and the metal mesh of the present invention causes a change in the pressing sensation when left for a long time, as compared with the foam discharge container using the mesh of the comparative example. It turns out that it is difficult to do.

FIG. 7 shows each dimension and contact angle of the mesh suitable for application to the foam discharge container according to the present invention.

In the above experiment, the contact angles of the mesh of the present invention were 129.27 ° for the upstream mesh and 131.45 ° for the downstream mesh, 119.43 ° for the upstream mesh and 119.795 ° for the downstream mesh for the metal mesh. However, as shown in FIG. 7, the mesh applied in the foam discharge container of the present invention preferably has a contact angle with water of 115 ° to 179 °. More preferably, the contact angle is larger than the contact angle of a general mesh by 5 ° or more, and is more preferably 118 ° to 175 °, which is highly feasible.

In the above experiment, meshes having a mesh size of 96 μm (water repellency) and 77 μm (metal) were used as an example of the upstream mesh, but in the present invention, the mesh size of the upstream mesh may be 70 μm to 300 μm. ..

Further, as an example of the downstream mesh, those having a mesh size of 48 μm (water repellency) and 45 μm (metal) were used, but in the present invention, the mesh size of the downstream mesh may be 30 μm to 80 μm.

The wire diameter and opening area are as shown in the table shown in FIG. Then, as the foaming member, an example in which different types of meshes are applied to the upstream side and the downstream side in the flow direction of the mixed liquid as two meshes has been described, but the types of meshes are the same on the upstream side and the downstream side. It may be.

Further, the number of meshes as the foaming member may be one, or may be three or more. When the number of meshes is one, the mesh opening is preferably 30 μm to 300 μm.

By using a mesh having such dimensions and contact angles, it is possible to suppress the occurrence of clogging in the foam member even if the foam discharge container is left for a long time.

In FIG. 7, as an example of the water-repellent resin mesh, a mesh in which water-repellent treatment such as silicone processing or fluorine processing is performed to increase the water repellency to 115 ° or more is shown as an example, but the material itself is repellent. Any fluororesin having water-based properties can be included in the target of the mesh of the present invention without processing the surface.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the above-mentioned specific embodiments, and various aspects are within the scope of the gist of the present invention described in the claims. It can be transformed and changed.

This application claims priority based on Japanese Patent Application No. 2019-081300 filed with the Japan Patent Office on April 22, 2019, and the entire contents of Japanese Patent Application No. 2019-081300 are incorporated in this application. To do.

1 Foam discharge container 10 Delivery mechanism 20 Gas-liquid mixing part 30 Injection member 40 Foam member 41 Upstream mesh (first mesh)
42 Downstream mesh (second mesh)
50 Head part 51 Discharge port 52 Discharge nozzle 53 Operation receiving part 54 Flow pipe 55 Outer cylinder 60 Screw cap part 100 Foam discharge dispenser 110 Cylinder part 111 Air cylinder part 112 Opening 114 Liquid cylinder part 115 Reduced diameter part 120 Piston guide 130 Liquid Piston 140 Poppet 150 Gas piston 160 Ball valve 170 Air valve 900 Container body F Foamed liquid L Liquid liquid M Mixed liquid

Claims

A foam discharge dispenser having a foaming member that foams a mixed liquid agent in which a liquid agent and a gas are mixed.
The foam member is a foam discharge dispenser having a contact angle with water of 115 ° to 179 °.
The foam discharge dispenser according to claim 1, wherein the foam member is a water-repellent mesh.
The foam discharge dispenser according to claim 2, wherein the surface of the water-repellent mesh is treated with silicone or fluorine.
The foam discharge dispenser according to claim 2 or 3, wherein the material of the mesh to be water-repellent is a resin.
The foam discharge dispenser according to claim 4, wherein the resin of the mesh to be water-repellent is nylon or polyester.
The foam discharge dispenser according to claim 1, wherein the foam member is a fluororesin mesh.
The foam according to claim 6, wherein the fluororesin mesh is polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), or tetrafluoroethylene / ethylene copolymer resin (ETFE). Discharge dispenser.
The foam discharge dispenser according to any one of claims 1 to 3, wherein the foam member is a metal mesh.
The foam discharge dispenser according to claim 8, wherein the metal mesh is stainless steel.
The foam discharge dispenser according to any one of claims 1 to 9, wherein the mesh opening is 30 μm to 300 μm.
The foam discharge dispenser according to any one of claims 1 to 10, wherein the foam member includes one or a plurality of meshes.
The foam discharge dispenser according to claim 11, wherein the foam member includes a second mesh of a different type or the same type on the upstream side and / or the downstream side of the mixed liquid agent in the flow direction with respect to the mesh.
The foam discharge dispenser
A gas-liquid mixing section where the liquid agent and gas are mixed,
A flow tube in which the mixed liquid agent mixed with the gas in the gas-liquid mixing section flows downstream from the gas-liquid mixing section.
A discharge nozzle that is connected to the outlet of the flow pipe and discharges the foamed liquid agent,
It is further provided with a delivery mechanism for delivering the liquid agent from the container body for storing the liquid agent toward the inlet of the discharge nozzle.
The foam discharge dispenser according to any one of claims 1 to 12, wherein the foam member is provided in the flow pipe.
The foam discharge dispenser according to any one of claims 1 to 13.
A foam discharge container including a container body for storing the liquid agent.
The foam discharge container according to claim 14, wherein the liquid agent contains a surfactant.
The foam discharge container according to claim 15, wherein the surfactant contains a foam improving agent.
The foam discharge container according to claim 16, wherein the foam quality improving agent is a dimethyldiallyl ammonium chloride / acrylamide copolymer, polyoxyethylene methyl glucoside, or polyethylene glycol.