JP6479502B2 - Squeeze foamer container - Google Patents

Description

  The present invention relates to a squeeze foamer container capable of mixing a liquid contained in a container main body with air and discharging it in a foam form by squeezing (pressing) the container main body. The present invention relates to a double container including an inner layer body to be accommodated and an outer layer body to accommodate the inner layer body.

  As a container for storing cosmetics such as lotion and toiletries such as shampoos, rinses or liquid soaps as squeeze liquids, squeeze foam containers can be discharged in the form of foam by squeezing the container body It has been known.

  For example, Patent Document 1 discloses a container body configured as a double container (laminated peeling container) having an inner layer body that contains a content liquid and an outer layer body that contains the inner layer body, and is attached to the mouth of the container body. When the body part of the outer layer body is squeezed, the air supplied from the air chamber between the inner layer body and the outer layer body is mixed with the content liquid in the former cap poured out from the inner layer body In addition, a squeeze foamer container is described in which the mixture is passed through a foaming member and the content liquid is discharged in the form of foam.

JP 2009-149327 A

  However, at the initial use of the squeeze foamer container as described above, if the air in the air chamber between the inner layer body and the outer layer body is insufficient, the air is not sufficiently mixed with the content liquid, so foaming occurs. There was a problem that the liquid in a state of being in a liquid state containing a lot of moisture was not sufficiently foamed in the member.

  This invention is made | formed in view of such a subject, The objective is to provide the squeeze foamer container which can discharge a content liquid in the state of favorable foam quality from the time of initial use. is there.

The squeeze foamer container of the present invention is a container main body configured in a double container comprising an inner layer body whose inside is a filling space for the content liquid and a squeezable outer layer body that accommodates the inner layer body,
An internal stopper provided with a content liquid flow path and attached to the mouth of the container body;
A pouring cap that is attached to the mouth and covers the mouth and the inner plug to form an air flow path outside the mouth;
A discharge cylinder provided on the dispensing cap, provided inside with a discharge flow channel connected to the content liquid flow channel and the air flow channel and having a tip serving as a discharge port;
An air hole that is provided through the outer layer body in the container body and communicates an air chamber provided between the outer layer body and the inner layer body with the air flow path;
The filling space disposed in the content liquid channel, allowing fluid flow from the filling space to the discharge channel through the content liquid channel, and passing from the discharge channel to the content liquid channel A first check valve for preventing fluid flow to
In a state in which the filling space is filled with a content liquid having a specified internal volume, the volume of the air chamber is 3% or more of the volume of the filling space.

  In the squeeze foamer container of the present invention, the volume of the air chamber may be 5% or more of the volume of the filling space in a state where the container body is filled with a content liquid having a specified internal volume. preferable.

  Further, in the squeeze foamer container of the present invention, the fluid flow from the air hole to the discharge passage through the air passage is allowed to the air passage, It is preferable that a second check valve for preventing the flow of fluid to the air flow path is provided.

  In the squeeze foamer container of the present invention, it is preferable that the second check valve is provided integrally with the first check valve.

  Moreover, in the squeeze foamer container of the present invention, it is preferable that a foaming member is provided in the discharge flow path.

Further, in the squeeze foamer container of the present invention, the pouring cap is provided with an outside air introduction hole that opens the air flow path to the outside,
Between the inner plug and the pouring cap, the flow of air from the outside of the pouring cap to the air channel through the outside air introducing hole is allowed, and the outside air introducing hole is formed from the air channel. It is preferable that a third check valve for preventing the flow of air to the outside of the pouring cap that has passed therethrough is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the squeeze foamer container which can discharge a content liquid in the state of favorable foam quality from the time of initial use can be provided.

It is sectional drawing of the squeeze foamer container which is one Embodiment of this invention. It is sectional drawing which shows a mode that the content liquid of the squeeze foamer container shown in FIG. 1 is discharged in foam form. (A) to (f), respectively, using the squeeze foamer container of FIG. 1, respectively, when an experiment was conducted to discharge the content liquid under different conditions of the volume ratio of the air chamber to the volume of the filling space. This shows the state of bubbles.

  Hereinafter, the present invention will be described in more detail with reference to the drawings.

  As shown in FIG. 1, a squeeze foamer container 1 according to an embodiment of the present invention includes a container body 10. The container body 10 is formed in a bottle shape having a cylindrical mouth portion 10a and a body portion 10b connected to the mouth portion 10a.

  The container body 10 includes an inner layer body 11 that contains the content liquid and an outer layer body 12 that houses the inner layer body 11 inside, and the inner layer body 11 is laminated inside the outer layer body 12 so as to be peelable. It is composed of a container (double container). Such a container body 10 can be obtained, for example, by biaxially stretch-blowing a preform having a laminated structure, or directly blow-molding a parison having a laminated structure.

  In addition, the container main body 10 should just be comprised by the double container which has not only the lamination peeling container but the inner layer body 11 and the outer layer body 12. FIG.

  The inner layer body 11 is formed, for example, in a thin bag shape from a synthetic resin, and the inside becomes a filling space M for the content liquid. Further, the upper end portion of the inner layer body 11 is opened at the mouth portion 10 a of the container body 10.

  The outer layer body 12 is formed into a bottle shape having a predetermined rigidity, for example, with a synthetic resin, and constitutes an outer shell of the container body 10. The portion corresponding to the body portion 10b of the outer layer body 12 can be squeezed (pressed) and has a restoring property to the original shape. An air hole 13 that penetrates the outer layer body 12 and communicates between the inner layer body 11 and the outer layer body 12 is provided in a portion corresponding to the mouth portion 10 a of the outer layer body 12. In the case shown in the drawing, the outer layer body 12 is provided with two air holes 13 facing each other across the axis, but it is sufficient that at least one air hole 13 is provided.

  An air chamber 14 is provided between the inner layer body 11 and the outer layer body 12. The air chamber 14 communicates with the air hole 13, and the air chamber 14 is filled with air in advance at the start of use of the squeeze foamer container 1 through the air hole 13. For example, in the case where the container body 10 is formed in the delamination container by the above-described blow molding, air is blown from the air holes 13 or air from the mouth portion 10a for the purpose of easily peeling the inner layer body 11 from the outer layer body 12. The inner layer body 11 is completely peeled from the outer layer body 12 by sucking out the air, and then the inner layer body 11 is returned to the original shape by blowing air into the filling space M from the mouth portion 10a or filling the content liquid. In this initial peeling process, the restoration of the inner layer body 11 is stopped halfway, so that the air chamber 14 filled with air is formed between the inner layer body 11 and the outer layer body 12. can do.

  In the present invention, the volume of the air chamber 14 is set to 3% or more of the volume of the filling space M in a state where the filling space M is filled with the content liquid of the prescribed inner volume.

  A male screw portion 15 is integrally formed on the outer peripheral surface of the mouth portion 10a. The male screw portion 15 is provided with a slit 16 for cutting the male screw portion 15 in the vertical direction. In the illustrated case, a total of two slits 16 are provided at positions corresponding to the air holes 13, but they may be provided only on either side, and the slit 16 is not provided. Is also possible.

  An inner stopper 20 is attached to the mouth 10 a of the container body 10. In the present embodiment, the inner stopper 20 includes a lower inner stopper 30 and an upper inner stopper 40 that are assembled one above the other.

  As shown in FIG. 1, the lower inner plug 30 includes a disk-shaped ceiling wall 31 that covers the upper opening of the mouth portion 10 a and an annular edge wall 32 that rises from the edge of the ceiling wall 31. A pouring hole 33 is provided at the center of 31. On the lower surface of the top wall 31, there are provided a cylindrical portion 34 that surrounds the pouring hole 33 and a seal wall 35 that comes into liquid-tight contact with the inner layer body 11. Further, the edge wall 32 is provided with a top wall 31 and a cutout portion 32a in which the edge wall 32 is cut out from below to above, and an annular convex portion 32b is provided on the inner peripheral surface of the edge wall 32. On the top surface of the top wall 31, an annular wall 36 that surrounds the pouring hole 33 is provided. Further, a lateral groove 37 extending from the notch 32 a to the annular wall 36 is formed on the top surface of the top wall 31, and a longitudinal groove 38 that cuts out the annular wall 36 is connected to the lateral groove 37.

  The upper inner plug 40 includes a disk-shaped top wall 41 that is superimposed on the top wall 31 of the lower inner plug 30. Further, a cylindrical portion 42 that protrudes downward is provided at the center of the top wall 41, and a hole 43 (in this embodiment, etc.) that surrounds the periphery of the cylindrical portion 42 is provided on the radially outer side of the cylindrical portion 42. A total of 4) is provided at intervals. Further, an inner annular wall 44 and an outer annular wall 45 that are concentrically arranged in the radial direction outside the hole 43 on the upper surface of the top wall 41 are provided, and the edge of the top wall 41 corresponds to the hole 43. A notch 46 is provided at a position to be cut.

  As shown in FIG. 2, the check valve 50 includes an annular cylindrical base 51, and a disk-like valve body 53 connected via an arm 52 is provided on the radially inner side of the base 51. . In the present embodiment, a three-point valve is illustrated, but a one-point valve may be used, and a valve having another configuration may be used. An annular valve body 54 as a third check valve is provided on the radially outer side of the base 51. That is, the disc-like valve element 53 opens both the content liquid flow path indicated by the two-dot chain line arrow and the air flow path indicated by the broken line arrow in FIG. 2, and the annular valve element 54 opens the outside air introduction hole 65. Sealed as possible.

  The dispensing cap 60 includes an annular cylindrical base 61, and a thread portion is provided on the inner peripheral surface of the base 61. Further, an annular recess 61 a that fits into the lower inner plug 30 is provided above the threaded portion. Further, an upper wall 62 is integrally connected to the upper portion of the base 61, and a discharge cylinder 64 is provided at the center of the upper wall 62. Further, at least one outside air introduction hole 65 penetrating the upper wall 62 is provided on the radially outer side of the discharge cylinder 64. Further, a discharge channel 66 is formed inside the discharge cylinder 64, and the tip thereof is a discharge port 67. In the present embodiment, in the discharge flow channel 66, the content liquid that has flowed in through the content liquid flow channel and the air that has flowed in through the air flow channel are mixed and pass through the foaming member F provided inside the discharge tube 64. By doing so, the content liquid becomes foamy. As the foam member F, for example, a porous body or a mesh member formed of a sintered body, a foam (such as a sponge), or the like can be used. In the present embodiment, two mesh members are provided in the discharge flow channel 66 as the foam member F. Further, on the lower surface of the upper wall 62, an annular seal cylinder 62 a that is in liquid-tight contact with the inner peripheral surface of the base 51 is provided.

  Further, the dispensing cap 60 has a removable overcap 68 (see FIG. 1), and the overcap 68 covers the discharge cylinder 64 so that dust or the like can be prevented from entering the discharge port 67. It has become.

  Next, the usage method of the squeeze foamer container 1 which becomes the structure mentioned above is demonstrated. When discharging the content liquid, as shown in FIG. 2, the discharge port 67 is directed downward with the overcap 68 removed, and the outer layer body 12 is squeezed.

  By the compression of the outer layer body 12, the air in the air chamber 14 between the inner layer body 11 and the outer layer body 12 is pushed out from the air hole 13. An air flow path communicating with the air hole 13 is formed between the mouth portion 10a and the base 61 by the slit 16, and the air flow path communicates with the cutout portion 32a of the lower inner plug 30 for cutting. Since the notch 32a communicates with the lateral groove 37 and the longitudinal groove 38 provided on the mating surfaces of the lower inner plug 30 and the upper inner plug 40, the air from the air hole 13 is connected to the slit 16 and the notch 32a. , Passes through the lateral groove 37, reaches the outlet of the vertical groove 38, pushes up the disc-like valve body 53, and is sent out to the discharge channel 66. At this time, the content liquid in the filling space M pushes up the disc-like valve body 53 through the content liquid flow path constituted by the discharge hole 33 and the inner peripheral surface of the cylindrical portion 42, and is sent out to the discharge flow path 66. It is. Then, the air that has passed through the air flow path from the air chamber 14 and the content liquid that has passed through the content liquid flow path are mixed in the discharge flow path 66 and foamed by the foaming member F and discharged from the discharge port 67. .

  Here, the volume in the air chamber 14 is the volume of the filling space M in a state where the filling space M is filled with the specified content liquid, that is, in an unused state where the container body 10 is filled with the expired content liquid. If it is less than 3%, the air sent out to the discharge channel 66 is insufficient and the content liquid is not sufficiently mixed with the content liquid, so that the content liquid is discharged in a foamy state that contains a lot of moisture and is easy to collapse. End up. Therefore, in the present invention, the ratio of the volume in the air chamber 14 to the volume of the filling space M is set to 3% or more. As a result, a sufficient amount of air can be sent out from the initial use state to the discharge flow channel 66, so that the content liquid can be discharged in a state of good foam quality. In order to discharge the content liquid in a better and creamy foam state, the ratio of the volume in the air chamber 14 to the volume of the filling space M is preferably 5% or more.

  When the squeeze to the outer layer body 12 is released after the dispensing of the content liquid is finished, the outer layer body 12 tries to restore the original shape, and a negative pressure is generated between the inner layer body 11 and the outer layer body 12. Therefore, the outside air passes through the outside air introduction hole 65 while pushing down the annular valve body 54. Then, the air passes through the slit 16 through the notch 46 of the upper inner plug 40 and the notch 32a of the lower inner plug 30, and is introduced from the air hole 13 into the air chamber 14 between the inner layer body 11 and the outer layer body 12. . Thereby, the outer layer body 12 is restored, only the inner layer body 11 is reduced in volume, and the volume of the air chamber 14 is increased.

  Next, an experiment will be described in which the filling liquid M is filled in the filling space M of the squeeze foamer container 1 configured as described above, and the volume of the air chamber 14 is changed to compare the foam quality discharged during initial use.

  In this experiment, after filling the content liquid until the filling space M is filled with the volume of the air chamber 14 being zero, that is, with the inner layer body 11 completely adhered to the inner surface of the outer layer body 12, the filling space M is filled. The content liquid is discharged so that the volume of the air chamber 14 is 2.5%, 3%, 4%, 5%, 6%, and 7%, respectively, and then about 1 cc of the content liquid is discharged. Then, the foam quality was determined. In the judgment, a foam having a high moisture content and a shape that tends to collapse was evaluated as “x”, a foam having a good foam was evaluated as “good”, and a foam that had a fine, creamy foam was evaluated as “good”. While showing a result in Table 1, the state of the discharged foam is shown to Fig.3 (a)-(f).

  As shown in Table 1 and FIG. 3, when the volume of the air chamber 14 with respect to the volume of the filling space M is 3% or more, good foam quality is obtained, and when it is 5% or more, even better, finely creamy It was confirmed that the liquid was discharged in a state of proper foam quality. On the other hand, when the volume of the air chamber 14 with respect to the volume of the filling space M is 2.5%, it has been confirmed that the foam has a high moisture content and its shape tends to collapse. Note that the results shown in Table 1 and FIGS. 3A to 3F are the results of experiments using one squeeze foamer container. A similar result was obtained using a mer container.

  As described above, according to the squeeze foamer container 1 of the present invention, the volume of the air chamber 14 is set to 3% or more of the volume of the filling space M in the state where the filling space M is filled with the content liquid of the prescribed inner volume. Thus, the content liquid can be discharged from the initial use state with a good foam quality.

  It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

  For example, in the above-described embodiment, the inner plug 20 is configured by the lower inner plug 30 and the upper inner plug 40 that are assembled one above the other. However, the present invention is not limited thereto, and the inner plug 20 may be configured as one member. Good. In the above-described embodiment, the outside air introduction hole 65 is provided in the dispensing cap 60. Instead, a check valve is provided in the body portion 10b of the outer layer body 12, and outside air is introduced from the check valve. You may do it.

DESCRIPTION OF SYMBOLS 1 Squeeze discharge container 10 Container body 10a Mouth part 10b Body part 11 Inner layer body 12 Outer layer body 13 Air hole 14 Air chamber 15 Male thread part 16 Slit 20 Middle plug 30 Lower middle plug (medium plug)
31 Top wall 32 Edge wall 32a Notch 32b Convex 33 Pour hole (content liquid flow path)
34 cylindrical portion 35 sealing wall 36 annular wall 37 transverse groove (air flow path)
38 Vertical groove (air flow path)
40 Upper plug (inner plug)
41 Top wall 42 Cylindrical part (content liquid flow path)
43 hole 44 inner annular wall 45 outer annular wall 46 notch 50 check valve (first check valve, second check valve)
51 Base 52 Arm 53 Disc-shaped Valve Body 54 Annular Valve Body (Third Check Valve)
60 Discharge cap 61 Base 61a Recess 62 Upper wall 62a Seal cylinder 64 Discharge cylinder 65 Outside air introduction hole 66 Discharge flow path 67 Discharge port 68 Overcap M Filling space F Foaming member

Claims (6)

A container main body configured in a double container including an inner layer body in which the content liquid is filled and a squeezable outer layer body that accommodates the inner layer body;
An internal stopper provided with a content liquid flow path and attached to the mouth of the container body;
A pouring cap that is attached to the mouth and covers the mouth and the inner plug to form an air flow path outside the mouth;
A discharge cylinder provided on the dispensing cap, provided inside with a discharge flow channel connected to the content liquid flow channel and the air flow channel and having a tip serving as a discharge port;
An air hole that is provided through the outer layer body in the container body and communicates an air chamber provided between the outer layer body and the inner layer body with the air flow path;
The filling space disposed in the content liquid channel, allowing fluid flow from the filling space to the discharge channel through the content liquid channel, and passing from the discharge channel to the content liquid channel A first check valve for preventing fluid flow to
A squeeze foamer container, wherein the volume of the air chamber is not less than 3% of the volume of the filling space in a state where the filling space is filled with a content liquid having a prescribed inner volume.   2. The squeeze foamer container according to claim 1, wherein a volume of the air chamber is 5% or more of a volume of the filling space in a state where the container body is filled with a content liquid having a specified internal volume.   A second reverse passage that allows the fluid flow from the air hole to the discharge passage through the air passage, and prevents the fluid flow from the discharge passage to the air passage. The squeeze foamer container according to claim 1 or 2, wherein a stop valve is provided.   The squeeze foamer container according to claim 3, wherein the second check valve is provided integrally with the first check valve.   The squeeze foamer container according to any one of claims 1 to 4, wherein a foaming member is provided in the discharge flow path. The dispensing cap is provided with an outside air introduction hole that opens the air flow path to the outside,
Between the inner plug and the pouring cap, the flow of air from the outside of the pouring cap to the air channel through the outside air introducing hole is allowed, and the outside air introducing hole is formed from the air channel. The squeeze foamer container according to any one of claims 1 to 5, wherein a third check valve is provided to prevent the flow of air to the outside of the pouring cap that has passed therethrough.