JPH0628202Y2 - Squeeze container - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a squeeze container capable of reliably discharging an internal solution of a household detergent, shampoo, hair styling agent or the like in the form of a foam without leaving it blank.

"Prior Art" Conventionally, in a container filled with a household detergent, shampoo, or the like, there is known a squeeze container having a function of foaming an internal solution and discharging it.

As such a squeeze container, generally, the container is squeezed to inhale the content liquid through a dip tube, and the inhaled content liquid is mixed with the inhaled air at the same time, and then this mixture is mixed into a porous body or a mesh net. It is known that the internal solution is foamed by passing it through a foaming body such as.

"Problems to be solved by the invention" By the way, when the porous body was used as the foaming body in the above squeeze container, it was foamed and discharged because the pore size of the porous body was uneven. There is a problem that the bubble diameter of the internal solution varies, and thus it is difficult to stably produce a foaming body capable of obtaining a desired fine and creamy foamy liquid. In addition, if the porosity of the porous body (the ratio of the volume of the pores to the volume of the entire porous body) is small, the resistance of the inner solution passing through this porous body increases, so compared to the squeeze of the container. There is a problem that a large amount of power is needed.

On the other hand, when a mesh net is used, there is a problem that a creamy foamy liquid cannot be obtained if the mesh has a large opening diameter. Also, if the opening diameter is small, the film will be easily attached to the net, so during continuous squeezing, the air and bubbles sucked into the dip tube due to the release from the previous squeeze will not form a film on the net. When the squeeze later occurs, only the air and bubbles in the dip tube are discharged because the formed air is blocked from ventilating with the outside, so that a phenomenon called so-called blanking occurs. There is a problem.

Referring to FIG. 3, as shown in FIG. 3A, after squeezing the flexible container body 2 to increase the internal pressure of the container body and to discharge the content liquid A to the outside. , By releasing the squeeze, the container body 2 elastically returns. When the container body 2 elastically returns, the pressure inside the container body 2 becomes a negative pressure, and air flows from the outside into the container body through the through hole 20 and the dip tube 12, and finally the dip tube 12 As shown in FIG. 3 (c), the content liquid A enters up to the level of the liquid surface of the content liquid A filled in the container body. In this state, the content liquid A in the dip tube 12 is promptly discharged at the time of the next squeeze.

However, in practice, the film 24 is formed on the net 22 by the foamed content liquid brought about by the previous squeeze.
May be formed. When a film is formed on the net 22 to block the ventilation between the dip tube 12 and the outside, the air in the dip tube 12 does not escape to the outside,
As shown in FIG. 6B, air stays in the dip tube 12 and the content liquid A does not enter. Therefore, the content liquid A is not discharged at the beginning of the next squeeze, and the dip tube 1
Only the air and bubbles in 2 are discharged.

Therefore, in order to prevent this blank beating phenomenon, separately from the through hole provided with the foaming net through which the discharged foam liquid passes,
A method of providing a valve chamber for accommodating the check valve has been considered.
The valve chamber communicates the inside and the outside of the container body, and the check valve housed in the valve chamber has a function of blocking the communication state by the valve chamber. In the case of a container provided with a valve chamber, when the internal pressure of the container body is increased to discharge the foamy liquid, the check valve blocks the communication state of the valve chamber. By closing the valve chamber in this way, the inside and outside of the container body are brought into communication with each other only through the through hole, so that the content liquid in the container body passes through the through hole and is discharged to the outside. Also,
When the internal pressure of the container body is made negative, the check valve stops closing the valve chamber, and the valve chamber establishes communication between the inside and the outside of the container body. In this state, the air from the outside does not pass through the through hole provided with the foaming net, but passes through the valve chamber and flows into the container body, so that the foaming net is prevented from forming a film to some extent. be able to.

However, providing the valve chamber with the check valve in the container complicates the structure of the container, hinders downsizing of the container, and further increases the manufacturing cost.

The present invention has been made in view of the above circumstances, and provides a squeeze container capable of discharging a creamy foamy liquid having a uniform bubble diameter by a squeeze operation and continuously discharging the foamy liquid without blanking. The purpose is to provide.

"Means for Solving Problems" The present invention has been made to solve the above problems, and has a container body that has an opening and is filled with a content liquid and has flexibility and elastic return force. And a lid for closing the opening of the container body to seal the container body, wherein an inner lid is provided by closing the opening of the container body, and a through hole is formed in the inner lid. A foaming cylinder is formed on the upper peripheral edge of the through hole of the inner lid, and a fitting cylinder is formed on the lower peripheral edge of the through hole, and a foaming net is inserted inside the fitting cylinder. A foaming net is stretched on the through-hole side of the fitting cylinder by fitting a cylindrical inner plug therein, and a diffusion chamber communicating with the foaming net inside the inner plug, and the diffusion chamber. A small diameter portion for rectification formed by narrowing the inner diameter of the cylindrical inner plug that communicates with and a mixture formed continuously with this small diameter portion. A chamber, an insertion hole communicating with the mixing chamber and opening to the lower surface of the inner plug, and a ventilation groove formed along the inner wall of the insertion hole and opening to the mixing chamber and the lower surface of the inner plug. A dip tube that connects the mixing chamber of the inner plug and the inner bottom side of the container body is inserted into the inner hole of the plug, and the opening diameter of the foaming net is 50 to 15
The diameter of the foamed net wire rod is 50 to 100 μm.

"Operation" By squeezing the container body, the internal solution is sucked into the mixing chamber through the dip tube inserted into the inner hole of the inner stopper, and at the same time, through the air hole formed along the inner hole of the inner stopper. The air in the container body is sucked into the mixing chamber, and both are mixed in the mixing chamber, and the mixture is rectified by passing through the small diameter part in the inside plug, increasing the flow velocity and atomized into the diffusion chamber. Let
Next, since foaming is performed using a foaming net having an opening diameter of 50 to 150 μm and a wire material diameter of the net of 50 to 100 μm, mixing of the internal solution and air, atomization of the mixture, and generation of mist Foaming can be carried out step by step using a mixing chamber, a small diameter part, a diffusion chamber and a foaming net, which makes it possible to produce a foamy liquid that is comprehensively grainy and has a creamy and uniform bubble diameter. Obtainable. Also, since the mixture of the internal solution and air is made to foam by increasing the flow velocity in the small diameter part and then spraying it onto the foaming net, this foaming net with a specified opening diameter is creamy and has a uniform bubble diameter. A liquid is obtained.

In particular, by utilizing the mixing chamber, the small diameter part and the diffusion chamber inside the inner plug, and by using the foaming net having the specified opening ratio and wire diameter,
Since it is possible to prevent the film from sticking to the net, air and bubbles in the dip tube can easily escape to the outside, and it is possible to sufficiently prevent the blank beating phenomenon when squeezing continuously.

Furthermore, by limiting the diameter of the wire rod of the foaming net, an appropriate opening ratio can be obtained, so that squeezing can be easily performed without requiring a large force, and sufficient strength of the wire rod can be obtained. Unexpected breakage of the foam net can be prevented.

[Embodiment] Hereinafter, the present invention will be described in detail with reference to the drawings.

1 and 2 show an embodiment of the squeeze container of the present invention.

In FIG. 1, reference numeral 1 is a squeeze container. This squeeze container 1 has an internal solution A such as detergent or shampoo inside.
With a bottomed cylindrical container body 2 for filling with
The inner lid 3 attached to the opening of the inner lid 3, the inner plug 4 attached to the inner surface side of the inner lid 3, and the covered cylindrical cap 6 attached to the outer surface side of the inner lid 3 are mainly configured. Has been done.

The container body 2 is made of a flexible synthetic resin, and is elastically deformed easily by grasping it in the palm and pressing it with the fingertip, and elastically returning by releasing the pressing. The inner lid 3 is made of synthetic resin integrally attached to the opening of the container body 2 by welding or the like, and closes the opening of the container body 2. Further, a through hole 7 is formed in the center of the inner lid 3 so as to penetrate from the lower surface to the upper surface, and a cylinder communicating with the through hole 7 is formed in the peripheral edge portion of the lower surface of the central portion of the inner lid 3. Similarly, a substantially cylindrical foaming tube 9 that communicates with the through hole 7 is formed at the peripheral edge portion of the through hole on the upper surface of the central portion of the inner lid 3, respectively. The inner plug 4 has a cylindrical shape made of synthetic resin, and is attached by being fitted into the inside 8 a of the fitting cylinder 8 of the inner lid 3. Further, a small diameter portion 11 is formed in the inner hole 10 of the inner plug 4,
A plurality of ventilation grooves 10a, 10a extending along the axial direction of the inner plug 4 are formed on the wall surface of the inner hole (insertion hole) 10 below the small diameter portion 11.
... is formed. Further, a mixing chamber 11a is formed below the small diameter portion 11 in the internal hole (insertion hole) 10 and the dip tube 12 is fitted therein, and the upper end portion of the ventilation groove 10a is communicated with the mixing chamber 11a. .

The dip tube 12 is a tube made of a flexible synthetic resin, and has a length such that the end portion on the opposite side of the inner plug 4 contacts the bottom portion of the container body 2. . Further, a foaming net 13 is sandwiched between the upper end surface of the inner plug 4 and the inner wall 3, and the foaming net 13 and the inner plug 4 are interposed between the small diameter portion 11 of the inner plug 4 and the foaming net 13. A diffusion chamber 11b is formed surrounded by.

This foaming net 13 is made of synthetic resin, as shown in FIG.
The mesh is made of fibers or metal, and the opening diameter D of the mesh is 50 to 150 μm, and the wire diameter of the net is 50 to 100 μm. In this case, the opening diameter D of the foaming net 13 is 50 to 1
The reason why it is set to 50 μm is that if it is smaller than 50 μm, the above-described blanking phenomenon is less likely to occur, and if it is larger than 150 μm, the bubble diameter of the discharged foamy liquid varies and becomes large as a whole, so that a creamy foaming feeling is obtained. Because you cannot get it. On the other hand, the wire diameter of the net is 50-100 μm
The reason is that if it is thicker than 100 μm, the opening ratio in the foaming net 13 becomes low, so that the resistance of the inner solution A when passing through the foaming net 13 becomes large, so that the desired squeeze pressure (pressing with the fingertip) This makes it difficult for the inner solution A to be discharged by the force applied to the container body 2), and if it is thinner than 50 μm, the strength is difficult, and when a squeeze pressure is applied more than necessary, a foaming net This is because 13 may be broken.

The outer lid 5 has two concentric engagement walls 14a on its inner surface,
14b has a cylindrical shape with a lid and is attached to the inner lid 3 by locking a cylindrical engaging portion 15 formed on the upper surface of the inner lid 3 between the engaging walls 14a and 14b. It has been done. Further, at the center of the outer surface of the outer lid 5, there is provided a discharge pipe 16 having a bent tip end portion that penetrates the outer lid 5 and faces the foaming cylinder 9 below the outer lid 5.

Next, a mechanism for discharging foaming of the content liquid in the squeeze container 1 having such a structure will be described.

When the container body 2 is squeezed, the internal pressure of the container body 2 rises, and the inner solution A is pushed out, and the dip tube 1
Go up in 2. On the other hand, by the above squeeze,
The air inside is also the ventilation groove 10 on the wall surface of the inner hole 10 of the inner plug 4.
Ascend through a, 10a. Then, the increased inner solution A and air are mixed in the mixing chamber 11a immediately after the tip opening portion of the dip tube 12, and further pass through the small diameter portion 11, whereby the flow velocity of the mixture is increased and uniformized. As a result, it becomes a mist and spreads out in the diffusion chamber 11b. Further, the homogenized and atomized mixture is passed through the foaming net 13 to be uniformly foamed to a foam diameter preset by the opening diameter D of the foaming net 13, and then the foaming cylinder. 9, discharged through the discharge pipe 16 to the outside of the squeeze container 1. Here, the inner solution A and the air are mixed in the mixing chamber 11a and then squeezed in the small diameter portion 11 to be rectified into a mist, and then pass through the diffusion chamber 11b to form bubbles in the foaming net 13 having a specified opening ratio. Since the bubbles are formed in a stepwise manner, a creamy foamy liquid having a uniform bubble diameter can be reliably discharged. Furthermore, since the mixture of the internal solution and air is increased in flow velocity at the small diameter part and then sprayed to the bubble net to form bubbles, this flow velocity improvement and foaming net with a specified opening diameter create a creamy foam liquid with a uniform bubble diameter. Is obtained.

At this time, the foamed mixture passes through the foaming cylinder 9 having a narrowed tip to increase the flow velocity and further equalize it, so that there is no variation in the size of the foam and the fine foam is stably discharged. can do. Furthermore, at the end of discharging the mixture or when the force for squeezing the container is insufficient, the mixture passes through the foaming net 13, but the discharge pipe 16
The foamy liquid that has not been discharged from the squeeze container 1 is collected in the space between the inner lid 3 and the outer lid 5. Therefore, it is possible to prevent the foamy liquid from leaking out of the squeeze container 1 and dripping, so that the content liquid does not adhere to the outer surface of the squeeze container 1 and therefore the user's fingers are not contaminated. . In particular, in this embodiment, since the tip of the discharge pipe 16 is bent, it is possible to further prevent the foamy mixture accumulated between the inner lid 3 and the outer lid 5 from flowing out of the squeeze container 1.

When the container body 2 is released from the squeeze after discharging the foamy inner solution A, the container body 2 elastically returns to a negative pressure, so that the discharge pipe 16 and the foaming cylinder are externally supplied. 9, air flows into the container body 2 through the foaming net 13 and the like, and along with this, the discharge pipe 16
Alternatively, part of the foam liquid in the foaming tube 9 also flows into the container body 2. At this time, since the foaming cylinder 9 has a shape in which the tip is narrowed, the suction force by the negative pressure can be effectively increased. Therefore, the content liquid accumulated between the inner lid 3 and the outer lid 5 can also flow into the container body 2. Further, in this case, since the opening diameter D of the foaming net 13 is regulated in advance to an appropriate size, there is almost no possibility that the membrane is stretched and the ventilation with the outside is blocked, so that the dip tube 12
It is possible to prevent air and the like from staying inside without being released.

Therefore, it is not necessary to provide a valve chamber that communicates with the inside and the outside of the container by penetrating the lid separately from the through hole. Therefore, the container does not become complicated, and the size and cost can be reduced. .

Here, the results of examining the relationship between the opening diameter D of the foaming net 13 and the state of the discharged foamy liquid are shown below.

Aperture diameter D [μm] Bubble condition 250; Size varies and is coarse 173; Rough is good 110; Good 77; Fine is good 30; (Not possible due to frequent blanking) The opening diameter D of the foam net 13 is 50
As a result of investigating the squeezing feeling and the strength of the foaming net 13 with respect to the wire diameter L in a range of 150 to 150 μm, the squeezing feeling is good and the strength is sufficient when the wire diameter L is in the range of 50 to 100 μm. I understood.

[Effect of the device] As described above, the squeeze container of the present invention sucks the internal solution into the mixing chamber through the dip tube inserted into the inner hole of the inner stopper by squeezing the container body and simultaneously The air in the container body is sucked into the mixing chamber through the air holes formed along the inner hole of the stopper to mix the two in the mixing chamber, and the mixture is rectified by passing through the small diameter portion in the inner stopper. ,
The flow velocity is increased to form a mist and discharged into the diffusion chamber, then the opening diameter is set to 50 to 150 μm, and the wire diameter of the net is set to 50 to
Since it is foamed using a foaming net of 100 μm,
Mixing of the internal solution and air, atomization of the mixture, and foaming of the mist can be performed step by step using the mixing chamber, the small diameter part, the diffusion chamber, and the foaming net. Overall, there is an effect that a foamy liquid having a fine grain, creamy and uniform bubble diameter can be obtained. In addition, since the mixture of the internal solution and air is increased in flow velocity in the small diameter part and then sprayed to the bubble net to form bubbles, this improved flow velocity and foaming liquid with a specified opening diameter creates a creamy and uniform bubble-like liquid. Is obtained.

Furthermore, by using a mixing chamber, a small diameter part, and a diffusion chamber, and by using a foaming net with a specified opening ratio and wire diameter, it is possible to prevent the film from stretching on the net, so that air in the dip tube or Bubbles can easily escape to the outside, and it is possible to sufficiently prevent the blank beating phenomenon when continuously squeezing.

Furthermore, by limiting the diameter of the wire rod of the foaming net, an appropriate opening ratio can be obtained, so that squeezing can be easily performed without requiring a large force, and sufficient strength of the wire rod can be obtained. Unexpected breakage of the foam net can be prevented.

[Brief description of drawings]

FIGS. 1 and 2 are views showing an embodiment of the squeeze container of the present invention. FIG. 1 is a side sectional view, FIG. 2 is a plan view of an essential part of a foaming net, and FIG. 3 is a container. FIG. 3 (a) is a side cross-sectional view during squeeze, FIG. 3 (b) is a side cross-sectional view when a film is formed on the net, and FIG. 3 ( c) is a side sectional view in the case where a film is not formed on the net. 1 ... Squeeze container, 2 ... Container body, 3 ... Inner lid, 4 ... Inner stopper, 5 ... Outer lid, 7 ... Through hole, 8 ... Fitting cylinder, 10 ... Inner hole, 10a ... ... Ventilation groove, 11 ... small diameter part, 11a ... mixing chamber, 11b ... diffusion chamber, 12 ... dip tube, 13 ... foaming net, 20 ... through hole, 22 ... foaming net, A ... … Content liquid, D… Opening diameter of foaming net, L… Wire diameter of foaming net.

Continuation of the front page (56) Reference JP-A-55-5797 (JP, A) JP-A-61-104960 (JP, A) JP-A-61-118164 (JP, A) Actual development Sho-58-174272 (JP , U) Japanese Patent Publication No. 52-16567 (JP, B2) US Patent 3346146 (US, A) "Practical Plastic Terminology Dictionary" supervised by Shoji Seto (published by Plastic Age, S45.6.20), p. 421, Page 541

Claims (1)

[Scope of utility model registration request] 1. A container main body having an opening and being filled with a content liquid and having flexibility and elastic restoring force, and a lid for closing the opening of the container main body and sealing the container main body. In the squeeze container, the opening of the container main body is closed to provide an inner lid, a through hole is formed in the inner lid, and a foaming tube is formed in the upper peripheral portion of the through hole of the inner lid. Fitting cylinders are formed on the lower peripheral portions, respectively, and a foaming net is inserted into the fitting cylinders to fit a cylindrical inner plug into the fitting cylinders so that the fitting holes are inserted into the through holes of the fitting cylinders. While the foaming net is stretched, a diffusion chamber communicating with the foaming net inside the inside plug, and a small diameter for rectification formed by narrowing the inner diameter of the cylindrical inside plug communicating with this diffusion chamber Part, a mixing chamber formed continuously with the small diameter part, an insertion hole communicating with the mixing chamber and opening on the lower surface of the inner plug, and the insertion hole A dip tube formed along the wall to form a ventilation groove that opens to the mixing chamber and the lower surface of the inner plug, and connects the inner chamber of the inner plug to the mixing chamber of the inner plug and the inner bottom side of the container body. The squeeze container is characterized in that the opening diameter of the foaming net is 50 to 150 μm, and the wire diameter of the foaming net is 50 to 100 μm.