JP2934145B2 - Foam discharge container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foam discharge container capable of discharging a liquid detergent or the like into a foam.

[0002]

2. Description of the Related Art Conventionally, there is a foam discharge container as described in JP-A-61-118164. This prior art includes a cap which is attached to an opening of the container body of the pressurizing chamber, the cap includes a liquid introduction passage extending into the container body, and an air introduction passage communicating with an upper space in the container body. A gas-liquid mixing chamber communicating with the liquid introduction passage and the downstream side of the air introduction passage, and a bubble discharge passage communicating with the downstream side of the gas-liquid mixing chamber, and a foam homogenizing net is provided in the bubble discharge passage. ".

In this prior art, by pressurizing a container body, a liquid content and an upper air in the container body are introduced into a gas-liquid mixing chamber and foamed, and the foam is homogenized by a net and externally supplied from a foam discharge passage. Can be discharged.

Here, the air introduction passage provided in the cap is (a) a hole (air introduction passage) is formed by abutment of a male mold and a female mold when the gas-liquid mixing chamber forming portion of the cap is formed by resin molding. Method (pin push-off, core push-off), (b) a method of drilling a hole (air introduction passage) in the gas-liquid mixing chamber forming part of the cap by post-processing, (c) a dip tube constituting the liquid introduction passage There is a method of providing a gap (air introduction passage) between an inner wall of a dip tube insertion portion of the cap and an outer wall of the dip tube at a portion to be inserted into the cap.

[0005]

However, the above-described conventional methods (a) to (c) for forming the air introduction passage provided in the cap in the foam discharge container have the following problems, respectively.

In the above (a), the hole serving as the air introduction passage is provided by abutment between the male mold and the female mold, so that the accuracy of the mold is required and the molding conditions and the use condition of the mold (wear, etc.) The size of the contact surface (air introduction passage portion) of both molds may change due to burrs (small holes), shorts (poor resin flow and large holes), pin breaks (clogging of holes), etc. Because of this, it is difficult to stabilize the area of the air introduction passage, and thus it is difficult to stably produce a foam discharge container having a constant foam quality. The minimum area (per air introduction passage) of the contact surface (air introduction passage) of both dies is about φ0.5mm for pin pressing and 0.4mm x 0.3mm for core pressing based on mold strength. And the foam quality adjustment range in the foam discharge container is narrow.

[0007] When the air introduction passage area is large and the air introduction amount is excessive, the foam quality becomes a crab foam, and when the air introduction passage area is small and the air introduction amount is too small, only bubbles and liquid close to the liquid are formed.

In the above (b), since the hole serving as the air introduction passage is formed by post-processing, it takes time and effort.
There is a difficulty in mixing machining waste and improving machining accuracy.

In the above (c), since the dip tube is generally an extruded product and the dimensional accuracy of the outer diameter is poor, the outer diameter of the dip tube is smaller than the gap formed between the dip tube and the inner wall of the dip tube insertion portion of the cap. It is difficult to make the dimensions (air introduction passage area) highly accurate. If the outer diameter of the dip tube is too small, the dip tube becomes loose during transportation, the area of the air introduction passage varies, and the foam quality tends to change.

Incidentally, in the foam discharge container, the liquid introduction passage is generally constituted by a dip tube. In view of the appropriate gas-liquid mixing ratio for generating bubbles in the gas-liquid mixing chamber, the area of the air introduction passage is small with respect to the dip tube diameter. Opening a large number of air introduction passages around the gas-liquid mixing chamber improves air-liquid mixing efficiency by introducing air from the other surface into the gas-liquid mixing chamber. Since the flow velocity of the air introduced into the air is high and the gas-liquid mixing efficiency is good, the area of each air introduction passage is further reduced. As described above, the area of the air introduction passage tends to be reduced, and it is more difficult to form such a minute air introduction passage with high accuracy.

SUMMARY OF THE INVENTION It is an object of the present invention to stably manufacture a foam discharge container capable of easily and accurately forming an air introduction passage provided in a cap in a foam discharge container and ensuring a constant foam quality.

[0012]

According to a first aspect of the present invention, there is provided a cap having a cap attached to an opening of a container body serving as a pressurizing chamber, wherein the cap extends into the container body. An air introduction passage communicating with the upper space in the container body, a gas-liquid mixing chamber communicating with the liquid introduction passage and the air introduction passage, and a bubble discharge passage communicating with the downstream side of the gas-liquid mixing chamber. In the foam discharge container, the gas-liquid mixing chamber is formed by a mixer integrally connected to a cap and a net holder fitted to the mixer, and the mixer connects the liquid introduction passage to the inner surface of the mixer. A liquid intake, an air intake opening to the upper space in the container body, and an air intake groove communicating the air intake with the inner surface of the mixer, the net holder has a cylindrical shape, Foam homogenization net welded to at least the upper end face The gas-liquid mixing chamber is formed by the inner surface of the mixer and the inner surface of the net holder so that the lower end face faces the air intake groove of the mixer in a press-fitted state. The above-mentioned air introduction passage is formed by an air intake and an air intake groove.

According to a second aspect of the present invention, in the first aspect of the present invention, the foam homogenizing net is welded only to the upper end face of the net holder. .

[0014]

According to the first aspect of the present invention, the following operations are provided. Since the air introduction passage is formed by forming the groove provided in the mixer (the groove is a concave shape of the outer shape of the mixer and can be formed with high precision) and by fitting the net holder to the mixer, burrs and shorts In addition, hole clogging does not occur, and the area of the air introduction passage can be easily made constant. Therefore, it is possible to stably produce a foam discharge container having a constant foam quality. Also, 0.2mm x 0.
It is easy to form an air introduction passage of about 2mm,
The range of foam quality adjustment is broadened, and the range of foam quality that can be adapted to the application is also widened.

Since the net holder is fitted into the mixer in a press-fitted state, there is no danger that the net holder will be loosened during transportation, and the looseness of the net holder will cause the area of the air introduction passage to vary, thereby changing the foam quality. Not even.

The mixer and the net holder can be made of resin molded by injection molding which can be molded with high precision.

According to the second aspect of the present invention, the following operations are provided. By welding the foam homogenizing net only to the upper end face of the net holder, the lower end face of the net holder does not undergo thermal deformation due to welding of the foam homogenizing net. Perfectly adheres to the groove forming surface of the mixer,
The air introduction passage area can be stably increased in accuracy.

[0018]

FIG. 1 is a schematic diagram showing a state of a foam discharge container before foam discharge, FIG. 2 is a schematic diagram showing a bubble discharge state of the bubble discharge container, and FIG.
FIG. 4 is a schematic diagram showing a state immediately after the bubble discharge container discharges the foam, FIG. 4 is a schematic diagram showing a state in which the bubble discharge container is tilted, FIG. 5 is an enlarged view of a main part of FIG. 1, and FIG. 7, FIG. 7 is an enlarged view of a main part of FIG. 3, FIG. 8 is an exploded view showing components of a foam discharge container, FIG. 9 is a schematic view showing a mixer, and FIG. 10 is a schematic view showing a net holder.

As shown in FIGS. 1 to 7, the foam discharge container 10 has a base cap 12 attached to an opening 11A of a flexible container main body 11, and a vertically open position with respect to the base cap 12. And an overcap 13 fitted slidably between the closed position.

As shown in FIG. 8, a mixer 14, a net holder 15 to which a foam homogenizing net 16 is welded, a dip tube 17, and a check valve 1 are mounted on the base cap 12.
8 is assembled and integrated by press fitting or the like. The base cap 12 is polypropylene (PP), the mixer 14 is high-density polyethylene (HDPE), the net holder 15 is chain low-density polyethylene (LLDPE), the net 16 is polyethylene terephthalate (PET), and the dip tube 17 is polypropylene ( PP).

As shown in FIG. 8, a nozzle 2 having a foam homogenizing net 22 welded to the overcap 13 is provided.
1 is assembled and integrated by press fitting or the like. In addition, the overcap 13 is a chain low-density polyethylene (LLDPE),
The nozzle 21 was formed of polypropylene (PP), and the net 22 was formed of polyethylene terephthalate (PET).

The base cap 12 has a female threaded tube portion 12 extending downward and annularly at intervals from the outside.
A, includes a container seal tube portion 12B and a mounting tube portion 12C, and also includes an outer tube portion 12D, a rising tube portion 12E, a stopper tube portion 12F, and a plug 12G extending upward and annularly at an interval from the outside.

The female threaded cylinder 12A of the base cap 12 is screwed to the outer surface of a male threaded cylinder 11B surrounding the opening 11A of the container body 11, and the container seal cylinder 12B
Seals the opening 11A in close contact with the inner surface of the male screw cylinder 11B.

A non-return valve 18 is fitted in the base cap 12 at an intermediate portion of the outer periphery of the mounting cylinder portion 12C in a press-fitted state, and the annular tongue-shaped check valve 1 of the non-return valve 18 is fitted.
8A is a container seal tube portion 12 of the base cap 12.
A valve seat 12H formed on the inner side of B is separated from the valve seat 12H, and an air return passage 51 described later can be opened only in the air return direction.

A mixer 14 is fitted into the base cap 12 at the lower end of the outer periphery of the mounting cylinder portion 12C in a press-fitted state. At this time, the net holder 1 in which the net 16 is welded to the upper end of the large diameter portion in the mixer 14 is attached to the upper end.
5 is fitted in a press-fit state, and the upper end of the dip tube 17 is fitted in the lower small-diameter portion in a press-fit close state.

When the net holder 15 is fitted to the mixer 14, the upper and lower two ribs 15A and 15B provided on the outer periphery of the net holder 15 are in close contact with the inner periphery of the mixer 14. One rib 14A provided on the inner peripheral portion of the mixer 14 is in close contact with the outer peripheral portion of the net holder 15, and the ribs 15A, 15B and the ribs 15A, 15B sandwich the rib 14A from above and below. 14A
To be engaged. When the mixer 14 to which the net holder 15 is assembled is fitted to the mounting cylinder 12C, the net 1
6 is in contact with the lower end surface of the mounting cylinder 12C,
And the net 16 are pressed between the mixer 14 and the mounting cylinder 12C.

That is, the base cap 12 forms a liquid introduction passage 31 extending to the bottom inside the container body 11 by the dip tube 17, and the container body 1 is formed by the mixer 14.
1 to form an air introduction passage 32 communicating with the upper space,
The liquid introduction passage 31 is formed by the mixer 14 and the net holder 15.
-Liquid mixing chamber 33 that communicates with the downstream side of
And a bubble outflow passage 3 communicating with the downstream side of the gas-liquid mixing chamber 33 via the net 16 by the inner diameter of the mounting cylinder portion 12C.
4 is formed. The base cap 12 is provided with a foam outflow passage 34.
Is closed by a plug 12G, and a bubble outflow passage 34 is opened on the side of the plug 12G.

Here, the mixer 14 is, as shown in FIG.
The liquid introduction passage 31 of the dip tube 17 is connected to the mixer 14
Liquid inlet 14B communicating with the inner surface of the container body 11
An air inlet 14C formed by penetrating the lower end wall of the upper large-diameter portion so as to open to the upper space inside, and an inner-diameter step portion of the upper large-diameter portion so that the air inlet 14C communicates with the inner surface of the mixer 14. 14E is provided with an air intake groove 14D formed in a concave shape. The air inlet 14C and the air inlet groove 14D are equally arranged at a plurality of circumferential positions of the mixer 14 (three positions in this embodiment). As a result, the air uniformly mixes with the liquid from the liquid inlet 14B in the circumferential direction, and promotes the generation of uniform bubbles. Further, the number of the air inlet 14C and the air inlet groove 14D may be one.

As shown in FIG. 10, the net holder 15 has a cylindrical shape, and a net 16 is welded to at least the upper end face (only the upper end face in this embodiment). The lower end surface of the net holder 15 is in contact with the inner diameter step portion 14E of the upper large diameter portion of the mixer 14,
The mixer 14 is fitted into the mixer 14 by press-fitting so as to face the air intake groove 14D of the mixer 14.

Then, the mixer 14 and the net holder 15
The gas-liquid mixing chamber 33 is formed by the inner surface of the mixer 14 and the inner surface of the net holder 15, and the air inlet passage 32 is formed by the air inlet 14C and the air inlet groove 14D. The upper opening of the air intake groove 14D forming the air intake passage 32 is closed by the lower end surface of the net holder 15, and a minute passage is formed.

Accordingly, in the foam discharge container 10, when the inside of the container main body 11 is pressurized and deformed at the time of discharging the foam, the liquid in the container passes through the liquid introduction passage 31 of the dip tube 17, and becomes gas-liquid. Sent to the mixing chamber 33,
The air in the container is sent into the gas-liquid mixing chamber 33 through the air intake passage 32 of the mixer 14. And the gas-liquid mixing chamber 33
In this case, the liquid introduced from the liquid introduction passage 31 and the air sent from the air introduction passage 32 are mixed and foamed, and the foam is homogenized by the net 16 and flows out to the foam outflow passage 34.

The overcap 13 has a skirt portion 13A extending downward and annularly at intervals from the outside.
Falling cylinder 13B, air seal cylinder 13C, engagement cylinder 1
3D, a cylindrical sealing portion 13E is provided. Over cap 1
3 is slid between the upper and lower open positions and the closed position with respect to the base cap 12 as described above,
The skirt portion 13A is an outer cylindrical portion 12D of the base cap 12.
, The falling cylindrical portion 13B is outside the rising cylindrical portion 12E of the base cap 12, the air sealing cylindrical portion 13C is inside the rising cylindrical portion 12E of the base cap 12, and the engaging cylindrical portion 13D is The outer surface of the stopper tube portion 12F and the outer surface of the cylindrical sealing portion 13E
While maintaining the contact state with the inner surface of the second stopper cylinder portion 12F, the outer surface side of the plug 12G is moved up and down, respectively.

At this time, the overcap 13 is in the closed position where the overcap 13 is pushed down with respect to the base cap 12 (FIG. 5).
Then, the lower end surface of the skirt portion 13A abuts against the stepped portion 121 on the outer side of the outer cylindrical portion 12D of the base cap 12, and the engaging projection provided at the lower portion on the inner surface side of the engaging cylindrical portion 13D is used as a stopper of the base cap 12. Lower stopper 41A of cylindrical portion 12F
And set to the closed position. When the overcap 13 is in the open position (FIG. 6) pulled up from the base cap 12, the outer surface locking portion 42 provided at the lower portion on the outer surface side of the falling cylindrical portion 13 </ b> B is engaged with the outer cylindrical portion 12 of the base cap 12.
D, and abuts a locking portion 43 provided at a substantially central portion on the inner surface side of the base cap D.
The second stopper cylinder portion 12F is engaged with the upper stopper 41B and is set to the open position.

When the overcap 13 is in the closed position, the sealing portion 13E is closely fitted in the gap between the inner surface of the stopper tube portion 12F of the base cap 12 and the outer surface of the plug 12G, and the bubble outflow passage 34 of the base cap 12 is formed. Is closed (FIG. 5), and in the open position, the sealing portion 13E is
The foam outlet passage 34 of the base cap 12 is opened at a distance from the plug 12G (FIG. 6).

The overcap 13 is provided in the sealing portion 1.
A foam discharge passage 44 is provided which communicates with the foam outflow passage 34 of the base cap 12 opened by 3E and opens to the outside. The overcap 13 has a nozzle 21 in which a foam homogenizing net 22 is welded to a tip opening of a foam discharge passage 44.
Are fitted in a press fit state.

Therefore, in the foam discharge container 10, when the foam is discharged, the foam generated in the base cap 12 as described above is transferred to the foam outlet passage of the base cap 12 with the overcap 13 set at the open position. It flows into the foam discharge passage 44 from 34, and is further homogenized by the net 22 and discharged to the outside.

Further, in the foam discharging container 10, the outside air is taken in immediately after the foam is discharged into the container main body 11 in which the container main body 11 is pressed to discharge the foam at the time of discharging the foam and the air in the container is discharged. An air return passage 51 as described below is provided for releasing and restoring the deformation.

That is, the foam discharge container 10 includes a vertically extending slit 52 in the outer cylindrical portion 12D of the base cap 12, and a vertically extending elongated groove 53 in the inner surface of the falling cylindrical portion 13B of the overcap 13. A hole 5 communicating with the inner space of the rising cylindrical portion 12E and the outer space of the mounting cylindrical portion 12C is formed in a part of the lateral wall connecting the rising cylindrical portion 12E of the cap 12 and the base of the stopper cylindrical portion 12F.
4, and a passage passing through the slit 52, the long groove 53, and the hole 54 is defined as an air return passage 51.

Then, with the overcap 13 still set at the open position immediately after the discharge of the foam, the air seal cylinder 13C of the overcap 13 is attached to the base cap 1
2, the upper cylindrical portion 12E is separated upward from the inner surface of the rising cylindrical portion 12E. 13B, the upper end portion of the rising cylindrical portion 12E is U-turned in an inverted U-shape, and the stopper cylindrical portion 1 is formed inside the rising cylindrical portion 12E.
An air return passage 51 that passes through the hole 54 from the space outside the 2F and goes down the outside of the mounting cylinder portion 12C is communicated (FIG. 7). At this time, the container body 11 accompanying the end of one foam ejection
Is released, the container internal pressure is reduced to a negative pressure in order to restore the container body 11 to the original state, and as a result the check valve 18A opens, so that the outside air flows from the air return passage 51 through the check valve 18A. It flows into the container body 11 (FIG. 7).

On the other hand, when the overcap 13 is set to the closed position, the air seal cylinder 1 of the overcap 13 is set.
3C is in close contact with the inner surface of the rising cylindrical portion 12E of the base cap 12, and prevents communication of the air return passage 51.

In the foam discharge container 10, the dip tube 17 is bent so that the dip tube 1
The liquid inlet 17A of No. 7 is arranged to face the bottom corner 11C of the container body 11 on the nozzle 21 side. The bottom corner 11C of the container body 11 is formed in a concave shape, and when the remaining amount of the content liquid becomes small, the remaining liquid is collected in the concave bottom corner 11C, and suction by the dip tube 17 is facilitated.

In the foam discharge container 10, since the dip tube 17 is bent, the container body 1
The container body 11 is not limited to when the container body 1 is used in an upright state.
When used in an inclined state, the liquid suction port 17A is reliably immersed in the content liquid at the bottom corner 11C side of the container body 11, thereby ensuring the suction by the dip tube 17 (FIG. 4).

Hereinafter, the usage state of the foam discharge container 10 will be described. (1) Before foam discharge (FIGS. 1 and 5) The overcap 13 is set to the closed position where it is pushed down from the open position. Thereby, the cylindrical sealing portion 13E of the overcap 13 is connected to the plug 12G of the base cap 12.
And the stopper tube portion 12 </ b> F is closely fitted, and the bubble outflow passage 34 of the base cap 12 is closed.

Further, the air seal cylinder 13C of the overcap 13 is in close contact with the rising cylinder 12E of the base cap 12 to prevent communication of the air return passage 51.

(2) At the time of foam ejection (FIGS. 2 and 6) The overcap 13 is set to the open position which is pulled up from the closed position. Thereby, the cylindrical sealing portion 13E of the overcap 13 is connected to the plug 12G of the base cap 12.
The foam outlet passage 34 of the base cap 12 is opened apart from the base cap 12. Therefore, when the container body 11 is pressed, the liquid in the container is sent to the gas-liquid mixing chamber 33 through the liquid introduction passage 31 of the dip tube 17, and the air in the container passes through the air introduction passage 32 of the mixer 14 to Sent to the mixing chamber 33,
These liquid and air are mixed and foamed in the gas-liquid mixing chamber 33. The foam is homogenized by the net 16 and flows into the foam outlet passage 34, further flows through the foam discharge passage 34, is further homogenized by the net 22, and is discharged from the nozzle 21 of the foam discharge passage 44.

At this time, the air seal cylinder 13C of the overcap 13 is connected to the rising cylinder 12 of the base cap 12.
The air return passage 51 communicates with the air return passage 51 at a distance from E. The air return passage 51 has an inverted U-shape due to the presence of the rising cylindrical portion 12E, and it is difficult for external water droplets and the like to pass upward through the air return passage 51. The water droplets and the like do not enter the container body 11 and dilute the liquid in the container.

(3) Immediately after discharging the foam (FIGS. 3 and 7) As described in (2) above, the overcap 13 is still in the open position, and the air return passage 51 is in a communicating state. Therefore, when the pressing of the container body 11 is released, the outside air flows into the container body 11 from the air return passage 51 via the check valve 18A, and restores the container body 11 to the original shape.

At this time, since the air return passage 51 is separate from the bubble outflow passage 34 of the base cap 12 and the bubble discharge passage 44 of the overcap 13, the return air passes through the bubble outflow passage 34 and the bubble discharge passage 44. Remaining foam is removed from the container body 11
There is no accompanying inside. Therefore, the upper space of the container body 11 is not filled with bubbles, and as a result, when the bubbles are discharged again, the gas-liquid mixing ratio in the gas-liquid mixing chamber 33 is not disturbed. Will not be discharged.

The operation of this embodiment will be described below. The air inlet passage 32 is formed in the mixer 14 with a groove formed therein (the air intake groove 14D is a concave shape of the outer shape of the mixer 14 and can be formed with high precision), and the net holder 15 is fitted to the mixer 14. Therefore, burrs, short circuits, and clogging of holes do not occur, and the area of the air introduction passage can be easily made constant. For this reason, the foam discharge container 10 having a constant foam quality is used.
Can be produced stably. Further, it is easy to form the air introduction passage 32 of about 0.2 mm × 0.2 mm, so that the range of adjusting the foam quality is widened, and the range in which the foam quality suitable for use can be generated is also widened.

Since the net holder 15 is fitted in the mixer 14 in a press-fitted state, there is no possibility that the net holder 15 will loosen during transportation. There is no change in quality.

It is to be noted that the mixer 14 and the net holder 15 can be formed by resin molding by injection molding which can perform high precision molding.

Since the foam homogenizing net 16 is welded only to the upper end face of the net holder 15, thermal deformation occurs when the foam homogenizing net 16 is welded to the lower end face of the net holder 15. No, the net holder 15
Can be completely adhered to the groove forming surface of the mixer 14 (the inner step portion 14E of the upper large-diameter portion of the mixer 14),
The air introduction passage area can be stably increased in accuracy.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration of the present invention is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. Even if present, it is included in the present invention. For example, the pressurized container main body of the present invention is not limited to a container whose entire body is flexible, and may include an air bellows or a pressure pump in a part of the container main body.

In the embodiment of the present invention, the cap is not necessarily divided into the base cap 12 and the overcap 13, but may be a single body.

[0055]

As described above, according to the present invention, in the foam discharge container, the air introduction passage provided in the cap can be easily formed.
A foam discharge container that can be formed with high precision and can maintain a certain foam quality can be stably manufactured.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a state before foam discharge of a foam discharge container.

FIG. 2 is a schematic diagram illustrating a foam discharge state of a foam discharge container.

FIG. 3 is a schematic diagram showing a state immediately after a bubble is discharged from a bubble discharge container.

FIG. 4 is a schematic view showing a state in which the foam discharge container is used in a tilted state.

FIG. 5 is an enlarged view of a main part of FIG. 1;

FIG. 6 is an enlarged view of a main part of FIG. 2;

FIG. 7 is an enlarged view of a main part of FIG. 3;

FIG. 8 is an exploded view showing components of the foam discharge container.

FIG. 9 is a schematic view showing a mixer.

FIG. 10 is a schematic view showing a net holder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Foam discharge container 11 Container main body 11A Opening 12, 13 Cap 14 Mixer 14B Liquid intake 14C Air intake 14D Air intake groove 15 Net holder 16 Foam homogenization net 31 Liquid introduction passage 32 Air introduction passage 33 Gas-liquid Mixing chamber 34 Bubble outflow passage (foam discharge passage) 44 Bubble discharge passage

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Osamu Sakamoto 2-4-8 Sakaemachi, Takatsuki-shi, Osaka (56) References Japanese Utility Model No. 5-68852 (JP, U) (58) Field surveyed (Int.Cl) . ^6, DB name) B65D 39/00 - 55/16

Claims (2)

(57) [Claims] 1. A cap which is attached to an opening of a container main body serving as a pressurizing chamber, wherein the cap has a liquid introduction passage extending into the container main body and an air introduction passage communicating with an upper space in the container main body. A gas-liquid mixing chamber communicating with the liquid introduction passage and the air introduction passage, and a foam discharge passage communicating with the downstream side of the gas-liquid mixing chamber. And a net holder fitted to the mixer to form the gas-liquid mixing chamber, wherein the mixer has a liquid inlet for communicating the liquid introduction passage with the inner surface of the mixer, and an upper space in the container body. The air holder has an air intake opening, and an air intake groove communicating the air intake with the inner surface of the mixer. The net holder has a cylindrical shape, and a foam homogenization net is welded to at least an upper end surface. And the lower end face is The gas-liquid mixing chamber is formed by the inner surface of the mixer and the inner surface of the net holder so as to be fitted into the mixer in a press-fitted state so as to face the inlet groove, and the air is introduced by the air inlet and the air inlet groove. A foam discharge container characterized by forming a passage. 2. The foam discharge container according to claim 1, wherein a foam homogenizing net is welded only to an upper end face of the net holder.