JPH10397A - Froth discharging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with bringing a froth discharging container of a squeezing type into proximity to an object to be washed at the time of washing the object to be washed by stabilizing the froth quality of the froth to be discharged and assuring several tens cm as the discharging distance of the froth regardless of the amt. of the liquid housed in the container. SOLUTION: This container consists of a container body 2 which is deformable by pressing and houses the liquid, a nozzle 6 and a cap 3 which has a liquid introducing path for introducing the liquid in the container body 2 to this nozzle 6, an air introducing path for introducing the air in the container body 2 to the nozzle 6 and a porous screen disposed just before the nozzle. The container is constituted to discharge the liquid in the container body in the form of the froth from the nozzle 6 when the container body 2 is pushed. In such a case, the ratio SA/SB of the min. sectional area SA of the liquid introducing path at the time of discharge and the min. sectional area SB of the air introducing path is specified to 10/1 to 0.1/1 and the min. sectional area SB of the air introducing path is specified to <=4mm<2> . A net-like screen 8 and a screen having radially arranged plural holes are formable as the porous screen.

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 easily and stably discharging a liquid contained in a container body into a foam by pressing a container body.

[0002]

2. Description of the Related Art Liquid detergents for cleaning glass windows, bathrooms, toilets, cars, and the like can prevent dripping and splashing when the liquid detergent is applied to a target object and can easily recognize the application site. In order to perform the cleaning operation efficiently, the liquid detergent is discharged in a foamed state.

[0003] Conventionally, as one of the foam discharge containers for discharging a liquid in a foam form, a liquid container is provided which includes a container body which can be deformed by being pressed by hand and a cap provided with a mesh screen. There is known a squeeze-type foam discharge container in which liquid and air are sent to a mesh screen of a cap by pressing a container body so that bubbles are discharged from a nozzle of the cap. Such a foam discharge container has an advantage that the foam can be easily discharged without using a propellant, and is widely used as a container for household liquid detergent.

In addition, this squeeze-type foam discharge container has a double mesh screen in order to make the formed foam fine and creamy, or releases the negative pressure of the container after discharging the foam. It has been proposed to separately form a flow path for discharging bubbles and a flow path for releasing a negative pressure so that air is quickly sucked in (see Japanese Utility Model Laid-Open No. 5-54304). Gazette).

[0005]

However, in the conventional foam discharge container, the gas-liquid mixing ratio of the foam discharged in accordance with the amount of the liquid stored in the container body (foam ratio per unit weight of the foam) Volume) and the foam quality is not constant. In particular, the opening area is 0.05 to 10 mm ²
Those tended to be remarkable. Therefore, in a product in which the liquid detergent is contained in such a container, there is a problem that the foam quality is largely different between the beginning and the end of use, and the apparent foam amount required for washing also changes.

Further, it has been a development task to make the discharged foam more creamy. For this purpose, various measures have been taken to discharge the foam having a high gas-liquid mixing ratio. In a foam discharge container that mixes and discharges liquid and air by squeezing the foam, the discharge distance of the foam becomes short when the gas-liquid mixing ratio of the foam increases, and the discharge container must be considerably close to the cleaning object ( Usually, within about 3 cm), the discharged foam did not reach the object to be cleaned, and the efficiency of the cleaning operation was rather reduced.

SUMMARY OF THE INVENTION The present invention is to solve such a problem of the prior art. In a squeeze-type foam discharge container, a predetermined foam quality can be obtained regardless of the amount of liquid contained in the container. To be able to discharge foam stably, and to ensure that the foam discharge distance is several tens of cm, so that foam can be applied to the cleaning object without bringing the foam discharge container close to the cleaning object. The purpose is to.

[0008]

SUMMARY OF THE INVENTION In the squeeze type bubble discharge container, the present inventor has proposed a minimum cross-sectional area S _A of a liquid introduction path for introducing a liquid into a mesh screen at the time of discharge, and a minimum cross-sectional area S of introducing a air. It has been found that the above object can be achieved by setting the ratio with _B to a specific range, and the present invention has been completed.

That is, the present invention provides a container body which is deformable by pressing and stores a liquid, a nozzle, a liquid introduction passage for introducing the liquid in the container body to the nozzle, and air for introducing air in the container body to the nozzle. A bubble discharge container which has an introduction path and a porous screen provided in front of the nozzle, and discharges the liquid in the container body from the nozzle in a foamy state by pressing the container body, wherein the minimum cross-sectional area S of the liquid introduction path is _A and the minimum cross-sectional area S _B of the air introduction path
And a ratio S _A / S _B of 10/1 to 0.1 / 1, and a minimum cross-sectional area S _B of the air introduction passage is 4 mm ² or less.

[0010] According to the foam discharge container of the present invention, the ratio S _A / S _B of the smallest cross-sectional area S _A and the minimum cross-sectional area S _B of the air introduction passage of the liquid introducing path at the time of discharge, 10/1 and 0.1 / 1, and since the 4 mm ² or less the minimum cross-sectional area S _B of the air inlet passage at the time of ejection, to eject the foam in a stable foam quality from the first use of a liquid contained in a container until use end It becomes possible. In addition, the foam formed thereby has a gas-liquid mixing ratio of usually about 1.1 to 20 and generally has a finer texture than foam used for face washing or shaving, but several tens of cm is discharged from the discharge container. It is possible to do. Therefore, the convenience in cleaning the glass window, the bathroom and the like is greatly improved.

Further, in the foam discharging container of the present invention, when the porous screen is formed from a screen having a plurality of holes arranged radially, the return of air for releasing the negative pressure in the container body after discharging the bubbles. , Through this screen. For this reason, it is also possible to omit the formation of a check valve generally provided in the container body in order to secure a ventilation hole for returning air.
In addition, by using a screen having holes arranged radially, it is possible to reduce the pressing force of the container body required for discharging the foam, and it is possible to easily extend the discharge distance of the foam. It becomes possible.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. In each of the drawings, the same reference numerals represent the same or equivalent components.

FIG. 1 is an overall sectional view (FIG. 1 (a)) and an xx sectional view (FIG. 1 (b)) of a foam discharge container 1a of one embodiment.
It is. The foam discharge container 1a shown in FIG. 1 includes a container body 2 and a cap 3 that can be deformed by pressing.

Such a container body 2 can be formed in the same manner as a container body of a known squeeze-type foam discharge container. For example, by appropriately setting the thickness and the like using a plastic material such as polypropylene, polyethylene, polyethylene terephthalate, polyvinyl chloride, etc., it is deformed by applying a pressing force by hand, and the deformation is reduced by weakening the pressing force. It can be formed to return to its original state by elasticity.

On the other hand, the cap 3 comprises an inner cap 4 attached to the container body 2 and an outer cap 5 attached to the inner cap 4. A nozzle 6 is formed at the upper end of the outer cap 5.
Is connected to a cap cover 7 via a hinge.

Inside the inner cap 4 (on the container body side),
A mesh screen 8 is provided as a perforated screen, and a tubular pipe joint 9 is further provided inside the screen. The screen 8 and the pipe joint 9
May be constituted by a separate member, or may be constituted by integral molding.

One end of the pipe joint 9 on the side of the mesh screen 8 is closed by an open end face of a small hole 10, and a dip tube 11 is inserted from the other end. The dip tube 11 extends in the direction of the bottom surface of the container main body 2, and an end member 12 having an extremely small hole 12 a is fitted to an end of the dip tube 11.

The foam discharge container 1a has an area of a liquid introduction passage for introducing liquid to the injection port 6 and an air introduction passage for introducing air so that the container can be suitably used when the container is inverted to discharge bubbles. Is adjusted. That is, when the foam discharge container 1a is used by being inverted, the foam discharge container 1a is first inverted, and then the body of the container main body 2 is pressed, and the liquid and air contained in the container main body are respectively screened by a mesh screen. 8 and mix them in front of the reticulated screen 8
In this case, a liquid introduction path for discharging the liquid contained in the container body 2 from the injection port 6 is formed by the dip tube 11 and the pipe joint 9 as shown by an arrow L in the drawing. The narrowest cross-sectional area (minimum cross-sectional area) S _A of the liquid introduction path is the cross-sectional area of the portion _A in the figure. Further, when the bubble discharge container 1a is inverted, the air introduction path for discharging the air in the container main body 2 from the injection port 6 becomes the internal space of the dip tube 11, as shown by G in the figure. small hole 12a of the cross-sectional area of the narrowest (minimum sectional area) S _B is the end of the dip tube 11 of the road
Opening area.

[0019] Therefore, in the discharge vessel 1a, the ratio S _A / S _B of the smallest cross-sectional area S _B of the smallest cross-sectional area S _A and the air introduction path of the liquid introducing path, 10/1 to 0.1 / 1, Preferably 5 /
The outer diameter of the dip tube 11, the inner diameter of the pipe joint 9,
The size of the small hole 12a at the end of is set as appropriate. By thus adjusting the ratio S _A / S _B of the smallest cross-sectional area S _B of the liquid introduction passage minimum cross-sectional area S _A and the air introduction path, the amount of liquid contained in the container main body 2 Independently, it is possible to discharge the liquid in the form of bubbles at a stable gas-liquid mixing ratio, and to secure the discharge distance of bubbles of about several tens of cm.

Further, the discharge in the container 1a, 4 mm ² the opening area of the small holes 12a of the end portion of the dip tube 11 having the smallest cross-sectional area S _B of the air inlet passage during discharge
The following is assumed. The minimum cross-sectional area S _B of the air inlet passage is greater than 4 mm ^2, foam quality is dependent on Ekizan amount in the container body 2, it can not be obtained a constant foam quality.

[0021] In the present invention, the ratio S between the minimum cross-sectional area S _B of the smallest cross-sectional area S _A and the air introduction passage of the thus liquid introduction path
Upon adjusting the _A / S _B, it is preferable that the opening area of the injection port 6 and 0.05 to 10 mm ^2. If the opening area of the injection port 6 is too large, the amount of air used in the container body 2 is small and it is difficult to use it in order to discharge bubbles of several tens of cm. Conversely, if the opening area is too small, the container body 2 may be squeezed. It is not preferable because the required force increases and it becomes difficult to use.

The volume of the container body 2 is 150 to 1000 mL
It is preferable that If the volume of the container body 2 is too small, there is a tendency that the liquid in the container body 2 cannot be discharged as bubbles, while if it is too large, the container body 2
Since the foam quality depends on the remaining amount of the liquid inside, there is a tendency that a certain foam quality cannot be obtained, which is not preferable.

On the other hand, the inner cap 4 of the foam discharge container 1a
Is provided with a ball valve 13. This ball valve 1
3, when the bubble discharge container 1a is inverted, the ball 14 closes the opening 15 to block the inside and outside of the container body 2, but when the bubble discharge container 1a is in the upright state, the ball 14 Are for closing the opening 15 and for communicating the air inside and outside the container body 2. Therefore, the foam discharge container 1
Even if a is inverted, the liquid does not leak from the ball valve 13. When the foam is discharged, the inside of the container body 2 becomes negative pressure. However, when the foam discharge container 1a is erected in this state, the ball 14 is pulled toward the container body 2 so that the opening 15
Is released, the outside air flows into the container main body 2, and the negative pressure inside the container main body 2 is released.

In the present invention, the ball valve 13
The opening 15 is not always necessary, but it is preferable that they are provided. That is, the opening 1 of the ball valve 13
The flow path of the air from the container body 5 to the inside of the container body 2 is separate from the flow path when the liquid in the container body 2 is discharged as bubbles, and the air passage from the opening 15 of the ball valve 13 to the container body 2
There is no mesh screen in the air passage leading to the inside of the device. Therefore, when the inside of the container body 2 has a negative pressure, the negative pressure is released very quickly.

FIG. 2 is a sectional view of a foam discharge container 1b according to another embodiment of the present invention. This foam discharge container 1b is composed of the same container body 2 and cap 3 as the foam discharge container 1a of FIG.
The pipe joint 9 and the dip tube 11 are also provided similarly to the foam discharge container 1a of FIG. However, the foam discharge container 1b shown in FIG. 2 has a liquid introduction path for introducing liquid to the injection port 6 and an air introduction path for introducing air so that the container can be suitably used when the container is erected to discharge bubbles. It is characterized in that the cross-sectional area is adjusted.
The opening cross-sectional area of 1 is not reduced to a small diameter at the end on the container bottom side, and the same diameter is maintained over the entire area of the dip tube. That is, when the foam discharge container 1b is used in an upright state, the foam discharge container 1b is placed in the upright state, the body of the container body 2 is pressed, and the liquid and air contained in the container body are respectively meshed. The liquid is sent in the direction of the screen 8 to generate bubbles from the mesh screen 8. In this case, the liquid introduction path for discharging the liquid contained in the container body 2 from the nozzle 6 is indicated by an arrow L in the figure. It becomes the internal space of the dip tube 11, and the minimum cross-sectional area S _A of this liquid introduction path is the cross-sectional area of the dip tube 11. The air introduction passage for discharging air in the container body 2 from the injection port 6 becomes the gap between the dip tube 11 and the pipe joint 9, as shown in figure G, minimum cross-sectional area S _B of the air introduction path It is the cross-sectional area of the portion B in the figure.

[0026] Therefore, in the discharge vessel 1b, the cross-sectional area S _A of the dip tube 11 in the above-described FIG. 2, the ratio S _A / S _B of the cross-sectional area S _B of the B site of FIG. 2, 10/1 0.1
/ 1, preferably 5/1 to 1/1, the outer diameter and inner diameter of the dip tube 11 and the inner diameter of the pipe joint 9 are appropriately set.

Also in this foam discharge container 1b, a ball valve 13 is formed similarly to the container 1a of FIG.
The air flow path from the opening 15 of the ball valve 13 to the inside of the container body 2 is separate from the flow path when the liquid in the container body 2 is discharged as bubbles. Further, the air flow path from the opening 15 of the ball valve 13 to the inside of the container body 2 has no net screen. Then, when the body of the container body 2 is pressed, the internal pressure of the container body 2 increases, and the ball 14 of the ball valve 13 moves upward to close the opening 15. On the other hand, when the pressing is released, the ball 14 moves downward and the opening 15
Is opened, and air quickly flows into the container body 2 from the opening 15.

FIG. 3 is a sectional view of a foam discharge container 1c according to still another embodiment of the present invention, and FIG. 4 is a perspective view (FIG. 3A) and a sectional view (FIG. )). This foam discharge container 1c is formed so as to be suitably used when the container is inverted to discharge the foam, similarly to the foam discharge container 1a of FIG. Then, similarly to the foam discharge container 1a of FIG.
A mesh screen 8 and a pipe joint 9 are provided in the inner cap 4, and a dip tube 11 is inserted into the pipe joint 9. However, in the foam discharge container 1c of FIG.
Is maintained at the same diameter over the entire area of the dip tube without being reduced to a small diameter at the bottom end of the container. As shown in FIG. 4, the small hole 10 at one end of the pipe joint 9 is formed to have a very small diameter. Further, the pipe joint 9 and the dip tube 11 are in close contact with each other, and there is no gap between them, and instead, a gap is formed between the pipe joint 9 and the inner cap inner wall 4a.

When using the foam discharge container 1c shown in FIG. 3, the foam discharge container 1c is first inverted, and then the container body 2
, And the liquid and the air contained in the container body are respectively sent in the direction of the mesh screen 8 to generate bubbles from the mesh screen 8. In this case, the bubbles are contained in the container body 2. The liquid introduction path for discharging the liquid from the injection port 6 is a gap between the pipe joint 9 and the inner cap inner wall 4a as shown by the arrow L in the figure, and the minimum cross-sectional area S _A of this liquid introduction path is a portion _A in the figure. Is the cross-sectional area of Further, when the bubble discharge container 1a is inverted, the air introduction path for discharging the air in the container body 2 from the injection port 6 becomes the internal space of the dip tube 11, as shown by the arrow G in the figure. minimum cross-sectional area S _B of the introduction path, the cross-sectional area of the opening of the small hole 10 of the pipe joint 9.

[0030] Therefore, in the foam discharge container 1c, as a minimum cross-sectional area S _A of the liquid introduction passage, and the cross-sectional area of the gap between the inner cap inside wall 4a and pipe joints 9, the minimum cross-sectional area S _B of the air inlet passage, The ratio S _A / S _B to the opening cross-sectional area S _B of the small hole 10 of the pipe joint 9 is 10/1 to 0.1 /
1, preferably 5/1 to 1/1, the inner diameter of the concave portion where the pipe joint 9 of the inner cap inner wall 4a is provided, the outer diameter and thickness of the vertical rib of the pipe joint 9, the small hole of the pipe joint 9 The size of 10 is set appropriately.

The foam discharge container 1c of FIG. 3 and the above-described bubble discharge container 1a of FIG. 1 are the same in that both of them are used in an inverted manner so that foam can be suitably discharged. At the time of manufacturing, the foam discharge container 1a of FIG.
3 has an advantage that the reticulated screen 8 can be easily attached as compared with the foam discharge container 1c of FIG.
Is easier to fit the pipe joint 9 into the inner cap 4 than the foam discharge container 1a of FIG.
There is an advantage that the small hole 12a does not need to be formed at the bottom end of the dip tube 11.

FIG. 5 is a sectional view of a foam discharge container 1d according to another embodiment of the present invention. This foam discharge container 1d is provided with the same pipe joint 9 as the foam discharge container 1c of FIG. 3, and the dip tube 11 is inserted so as to be in close contact with the pipe joint 9, and between the inner cap inner wall 4a and the pipe joint 9. Is such that a gap is formed. However, the discharge container 1d in FIG. 5 has a liquid introduction path for introducing liquid to the injection port 6 and an air introduction path for introducing air so that the container can be suitably used when the container is erected and bubbles are discharged. The opening cross section is adjusted. That is, in the foam discharge container 1d of FIG. 5, the liquid introduction path for discharging the liquid from the nozzle 6 is
As shown by an arrow L in the figure, the space becomes the internal space of the dip tube 11, and the minimum cross-sectional area S _A of the liquid introduction path is the opening cross-sectional area of the small hole 10 of the pipe joint 9. Further, as shown by G in the figure, the air introduction path for discharging the air in the container body 2 from the injection port 6 is a gap between the inner cap inner wall 4a and the pipe joint 9, and the minimum cross-sectional area S of this air introduction path is _B is the cross-sectional area of the portion _B in the figure.

The foam discharge container 1d shown in FIG. 5 and the above-described bubble discharge container 1b shown in FIG. 2 are the same in that the foam is discharged appropriately by using the container in an upright position. At the time of manufacturing the container, the foam discharge container 1b of FIG.
It has an advantage that the reticulated screen 8 can be easily attached as compared with the foam discharge container 1d of FIG.
The bubble discharge container 1d has an advantage that the pipe joint 9 can be easily fitted to the inner cap 4 as compared with the bubble discharge container 1b of FIG.

Therefore, in this discharge container 1d, the small cross section _1A of the pipe joint 9 is defined as the minimum sectional area S _A of the liquid introduction passage.
As an opening area of 0 and a minimum sectional area S _B of the air introduction path,
The ratio S _A / S _B to the cross-sectional area of the portion B in FIG.
To 0.1 / 1, preferably 5/1 to 1/1, the inner diameter of the concave portion where the pipe joint 9 of the inner cap inner wall 4a is provided, the outer diameter and thickness of the vertical rib of the pipe joint 9, and The size of the small hole 10 of the pipe joint 9 is appropriately set.

In addition to the foam discharge containers 1a to 1d of the above embodiments, in the present invention, instead of the mesh screen 8, various screens having a plurality of holes can be provided as a porous screen. Further, the cap 3 does not necessarily need to be formed from the inner cap 4 and the outer cap 5 as in the foam discharge containers 1a to 1d described above, and these may be integrated. As a result, the number of parts constituting the container can be reduced, and the foam discharge container can be produced at lower cost. Further, the valve 13 for eliminating the negative pressure in the container after discharging the foam is not limited to the above-described ball valve,
For example, an elastic valve can be provided. As a means for covering the nozzle 6 when the container is not used, the cap cover 7 may be used.
A push-pull cap may be provided without using a push-pull cap.

For example, as shown in FIG.
The cap 3e of e can be configured to include the push-pull cap 21 and omit the cap cover. FIG. 2B is a cross-sectional view of the open state where the push-pull cap 21 is pulled up, FIG. 2C is a cross-sectional view of the closed state where the push-pull cap 21 is pushed down, and FIG. It is a top view of the screen 8m provided in the cap 3E.

In the foam discharge container 1 e, the nozzle 6 from which the foam is discharged is an opening of the push-pull cap 21. The bubble discharge container 1e is provided with a ball valve as the valve 13 for eliminating the negative pressure in the container. In addition,
According to the mode of forming the valve 13 of the foam discharge container 1e, in the open state of the push-pull cap 21 (FIG. 2B), the outer peripheral wall 22 of the push-pull cap 21 and the outer peripheral wall 17 of the cap 3e overlap, and the ball Since the opening 13a of the valve 13 is not directly exposed to the outside of the container, it is possible to obtain an advantage that even if the push-pull cap 21 is forgotten to be closed, entry of water or the like from outside of the container can be prevented.

In this foam discharge container 1e, a plurality of vertical ribs 18 are formed on the inner wall of the cap 3e at the portion where the dip tube 11 is inserted. Alternatively, since the air introduction path is formed, the pipe joint 9 is omitted, and the cap 3e can be formed at low cost with a small number of parts.

In this foam discharge container 1e, a plurality of rectangular holes 8h arranged radially are used instead of the mesh screen 8 as in the above-described embodiment.
Is provided integrally with the cap 3e. Therefore, the number of parts is smaller than that of a container in which a screen is formed separately from the cap, and also in this respect, it can be obtained at low cost. Furthermore, the screen 8m is easier to form than a screen in which substantially the entire surface is formed in a net shape, such as the net screen 8 on the pipe joint 9 in FIG. Therefore,
The cost can be further reduced.

In addition, as shown in the foam discharge container 1e of FIG.
When a screen having a plurality of holes 8h is used, the return of the air for releasing the negative pressure in the container body after discharging the bubbles is reduced as compared with the case of using a net-shaped screen. Progresses smoothly through itself,
The negative pressure in the container body is quickly released. Therefore, FIG. 6 shows an example in which the valve 13 is provided in order to eliminate the negative pressure after the bubbles are discharged, but the size and number of the holes 8h of the screen 8m, the strength of the container body (restoring force) ) Etc., the valve 13
Can be easily omitted. Further, by using the screen 8m in which the plurality of holes 8h are formed, the pressing force of the container body required for discharging the foam can be reduced, so that the discharge distance of the foam can be easily extended. It is possible to do.

When the foam discharge container of the present invention is provided with a screen 8m having a plurality of holes as a porous screen, FIG. 6 shows an example in which rectangular holes are formed radially. There is no particular limitation, for example, as shown in FIG. 7, the hole 8h formed in the screen 8m may be circular (FIG. 7 (a)) or oval (FIG. 7 (b), (c)). )), And may be in the form of a slit (not shown).

While the embodiment of the present invention has been described with reference to the drawings, the foam discharge container of the present invention can take various forms. For example, if necessary, a reticulated screen can be further attached to the nozzle 6 to make the screen double. Thereby, the foam quality can be made more creamy.

When a screen screen 8m or a screen 8m having a plurality of holes is provided as a porous screen,
After the liquid and air in the container body are mixed via the liquid introduction path and the air introduction path, respectively, a plurality of these may be provided before reaching the injection port 6. As the screen screen 8, a screen having many pores formed in a film, a sponge-like screen, or the like can be used, in addition to a screen in which threads are stretched vertically and horizontally.

There is no particular limitation on the type of liquid contained in the foam discharge container of the present invention.
It is suitable as a container for accommodating a liquid detergent for cleaning glass, a bathroom, and the like. Further, it is not necessary to include a propellant in the liquid contained in the main container.

[0045]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below.

Example 1 A foam discharge container of the embodiment shown in FIG. 1 was manufactured as an inverted bubble discharge container. In this case, the dip tube 11
The dip tube 11 has an inner diameter of 3.4 mm.
m) The end member 12 having 12a was fitted. Spout 6
Has a diameter of 0.8 mm, so that the nozzle area is 0.5
mm ² . The minimum cross-sectional area of the air introduction passage of this foam discharge container is determined by the small hole 12 at the end of the dip tube 11.
Since it corresponds to the cross-sectional area of the opening a, it is 0.39 mm ² , and the minimum cross-sectional area of the liquid introduction path is the cross-sectional area of the portion A in FIG. 1 and is 0.34 mm ² . Therefore, the ratio between the minimum cross-sectional area S _B of the smallest cross-sectional area S _A and the air introduction path of the liquid introduction path when the foam discharge was 0.87. In addition, a container body having a capacity of 400 mL was used.

Into the obtained foam discharge container, 100 g, 200 g, 300 g or 400 g of a commercially available household detergent is put, the container is inverted, and the body of the container main body is pressed at a constant pressure of 2.5 kg.
f, and bubbles were discharged from the nozzle. The gas-liquid mixing ratio was determined by measuring the weight and volume of the discharged foam. The result is shown in FIG.

Comparative Example 1 Same as Example 1 except that the dip tube 11 had the same inner diameter of 3.4 mm throughout the entire area without fitting the end member to the end of the dip tube 11 on the container bottom side. Was prepared. The minimum cross-sectional area of the air introduction passage of this foam discharge container is determined by the pipe joint 9
It is an cross-sectional area by 9.08 ² small holes 10 formed in the ratio between the minimum cross-sectional area S _B of the smallest cross-sectional area S _A and the air introduction path of the liquid introducing path when bubble ejection 0.34mm ^2/9.
08 mm ² = 0.037.

In the same manner as in Example 1, the detergent for home was put into the obtained foam discharge container, and the foam was discharged. The gas-liquid mixing ratio was determined by measuring the weight and volume of the discharged foam. The result is shown in FIG.

According to the results shown in FIG. 8, according to the foam discharge container of Example 1 in which the minimum cross-sectional area of the air introduction passage at the time of discharge is 4 mm ² or less, the gas-liquid mixing ratio is independent of the remaining amount of liquid in the container body. Is always substantially constant, indicating that the foam quality is stable. On the other hand, according to the foam discharge container of Comparative Example 1 in which the minimum cross-sectional area of the air introduction passage at the time of discharge exceeds 4 mm ² , the gas-liquid mixing ratio of the discharged bubbles increases with a decrease in the amount of liquid in the container. It can be seen that the foam quality is unstable.

[0051]

According to the bubble discharging container of the present invention, it is possible to discharge bubbles of a predetermined foam quality stably irrespective of the amount of liquid contained in the container. In addition, since several tens of cm can be ensured as the discharge distance of the foam, it is possible to improve the convenience of storing the liquid detergent in the container and discharging the foam to wash the object to be cleaned.

[Brief description of the drawings]

FIG. 1 is an overall sectional view (FIG. 1 (a)) and a partial sectional view (FIG. 1 (b)) of a foam discharge container of the present invention.

FIG. 2 is a sectional view of a foam discharge container according to another embodiment of the present invention.

FIG. 3 is a sectional view of a foam discharge container according to another embodiment of the present invention.

FIG. 4 is a perspective view of the vicinity of a pipe joint (FIG. 4A).
And a sectional view ((b) of the same figure).

FIG. 5 is a sectional view of a foam discharge container according to another embodiment of the present invention.

FIG. 6 is a top view of the screen portion of the cap of the foam discharge container according to another embodiment of the present invention (FIG. 6A) and sectional views of the cap (FIGS. 6B and 6C).

FIG. 7 is a top view of a modification of the screen of the cap of the foam discharge container according to another embodiment of the present invention (FIG. 7A).
(B), (c)).

FIG. 8 is a diagram showing the relationship between the liquid amount in the container and the gas-liquid mixing ratio for the foam discharge containers of the example and the comparative example.

[Explanation of symbols]

 1a, 1b, 1c, 1d, 1e Foam discharge container 2 Container body 3, 3e Cap 4 Inner cap 5 Outer cap 6 Injection port 7 Cap cover 8 Mesh screen 9 Pipe joint 11 Dip tube 12 End member 13 Ball valve 21 Push-pull cap

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location B65D 47/06 B65D 47/06 A

Claims (12)

[Claims] 1. A container body which is deformable by pressing and stores a liquid, a nozzle, a liquid introduction path for introducing liquid in the container body to the nozzle, an air introduction path for introducing air in the container body to the nozzle. having a porous screen disposed in front of the injection port, the liquid in the container body from the nozzle holes by the pressing of the container body a foam discharge container for discharging in a foam, the minimum liquid inlet passage cross-sectional area S _a and the air introduction the ratio S _a / S of the minimum cross-sectional area S _B of the road
_B is a 10/1 to 0.1 / 1, the foam discharge container, characterized in that the minimum cross-sectional area S _B of the air introduction passage is 4 mm ² or less. 2. A liquid ratio S _A / S _B of the smallest cross-sectional area S _B of the introduction passage minimum cross-sectional area S _A and the air introduction passage is 5 / 1-1 / 1
The foam discharging container according to claim 1, wherein 3. The opening area of the nozzle is 0.05 to 10 mm ^2.
The foam discharge container according to claim 1 or 2, wherein 4. The container body has a volume of 150 to 1000 mL.
The foam discharge container according to any one of claims 1 to 3, wherein 5. The foam discharge container according to claim 1, wherein the liquid contained in the container main body comprises a liquid detergent containing no propellant. 6. The foam discharge container according to claim 1, wherein the porous screen is a mesh screen. 7. The foam discharging container according to claim 1, wherein the porous screen has a plurality of radially arranged holes. 8. An inner cap attached to the container body and an outer cap attached on the inner cap, wherein a cylindrical pipe joint is provided in the inner cap on the container body side with respect to the mesh screen. One end of the pipe joint on the mesh screen side is closed by an end face having a small hole, and a dip tube extending toward the bottom of the container body is inserted into the other end, and a gap between the dip tube and the pipe joint introduces liquid. 7. The foam discharge container according to claim 6, wherein the foam discharge container is used in an upside-down state. 9. An inner cap attached to the container body and an outer cap attached on the inner cap, wherein a cylindrical pipe joint is provided on the container body side of the mesh screen in the inner cap, One end of the pipe joint on the mesh screen side is closed with an end face having a small hole, and a dip tube extending toward the bottom of the container body is inserted into the other end, and a gap between the dip tube and the pipe joint is used to introduce air. The foam discharge container according to claim 6, wherein the foam discharge container is used in an upright state. 10. An inner cap attached to the container body and an outer cap attached on the inner cap, wherein a cylindrical pipe joint is provided in the inner cap on the container body side with respect to the mesh screen. One end of the pipe joint on the mesh screen side is closed with an end face having a small hole, and a dip tube extending toward the bottom of the container body is inserted into the other end, and a gap between the pipe joint and the inner wall of the inner cap is introduced. 7. The foam discharge container according to claim 6, wherein the foam discharge container is used in an upside-down state. 11. An inner cap attached to the container body and an outer cap attached on the inner cap, wherein a cylindrical pipe joint is provided in the inner cap on the container body side with respect to the mesh screen. One end of the pipe joint on the mesh screen side is closed with an end face having a small hole, and a dip tube extending toward the bottom of the container body is inserted into the other end, and a gap between the pipe joint and the inner wall of the inner cap is introduced with air. The foam discharge container according to claim 6, wherein the foam discharge container is used in an upright state. 12. The foam discharge container according to claim 1, wherein an adapter having a mesh screen on an end face is mounted on the nozzle.