JP2015178384A - double container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double container capable of preventing contact of stored content fluid with ambient air, and enabling extracting content fluid by foaming without providing a space for previously mixing content fluid and air.SOLUTION: A double container 1A includes an inner layer body 2, an outer layer body 3 for storing the inner layer body 2 in the inside, and an extraction cap 4A. The extraction cap 4A has a liquid chamber R1 communicated with a through opening 12, and an air chamber R2 communicated with a vent hole 3c. An exterior wall 51 has a liquid outflow port 57 communicated with the liquid chamber R1, and an air outflow port 56 communicated with the air chamber R2, and also has an extraction cylinder 58 surrounding the liquid outflow port 57 and the air outflow port 56, and is provided with an expanded material 70A contacting both liquid outflow port 57 and air outflow port 56 in the inside of the extraction cylinder 58.

Description

  The present invention includes a volume-deformable inner layer body that contains the content liquid, and an outer layer body that houses the inner layer body to form the outer shell of the container, and only the inner layer body is extracted along with the dispensing of the content liquid. The present invention relates to a double container for volume reduction, and in particular, to a technique capable of pouring the content liquid into a foam.

  As a container to store cosmetics such as lotion, shampoo, rinse or liquid soap, food seasoning or chemicals, etc. An outer layer body that forms an outer shell of the container, and the outer layer body is provided with a vent hole that communicates with the inside and outside, and only the inner layer body is reduced in volume as the content liquid is poured (delamid container, (Also referred to as a delamination container) is known (for example, Patent Document 1). Since this type of container can dispense the content liquid without replacing the content liquid in the inner layer with the outside air, it particularly stores the content liquid that may be deteriorated in quality due to contact with the outside air. Suitable as a container.

Japanese Patent No. 3688373

  By the way, the content liquid accommodated in such a double container is conventionally mostly poured out in a liquid state, and there are still few types that can be poured out in other forms (foam). Is the current situation. For this reason, the desired foam quality cannot be obtained depending on the content liquid, and there is still room for development.

  By the way, conventionally, in a container for pouring out the content liquid in the form of foam, a space (gas-liquid mixing chamber) in which the content liquid and air are mixed in advance is provided, and the content liquid mixed with air is supplied to the gas-liquid mixing chamber. It is made to foam by letting the foam provided in the downstream pass. However, providing both the gas-liquid mixing chamber and the foam is disadvantageous in reducing the size of the container.

  An object of the present invention is to solve such problems. The purpose of the present invention is to prevent a contact between the contained content liquid and the outside air, and a space in which the content liquid and the air are mixed in advance. It is in the place of proposing a new double container that can be poured out in the form of foam without providing it.

The present invention relates to a volume-deformable inner layer body that contains a content liquid, an outer layer body that contains the inner layer body inside and has a vent hole that penetrates the peripheral wall of the mouth, and a covered cylindrical shape that contains the vent hole inside. A pouring cap that has an outer wall of the outer wall and holds the outer wall on the peripheral wall of the mouth,
The dispensing cap has a through opening that communicates with the inner layer body and covers a partition wall that covers the upper opening of the inner layer body, and a liquid chamber that is provided inside the outer wall and communicates with the through opening and air that communicates with the vent hole A chamber,
The outer wall has a liquid outlet that communicates with the liquid chamber and an air outlet that communicates with the air chamber, and a pouring cylinder that surrounds the liquid outlet and the air outlet,
A foam that is in contact with both the liquid outlet and the air outlet is provided inside the dispensing cylinder, and the inner layer body contents liquid, the outer layer body, and the inner layer body are pressed by the outer layer body. Are introduced into the foam separately from the liquid outlet and the air outlet, mixed and foamed with the foam, and discharged from the outlet cylinder.

  It is preferable that either one of the liquid outlet and the air outlet is brought into contact with the central portion of the foam, and one of the liquid outlet and the air outlet is brought into contact with an edge of the foam while being directed toward either one.

  It is preferable that both the liquid outlet and the air outlet are individually brought into contact with the central portion of the foam and directed toward the other side.

  The outer wall has a bulging portion that bulges toward the foam at a central portion of the foam, and either one of the liquid outlet or the air outlet is provided on a peripheral wall of the bulged portion. It is preferable to bring the foam into contact with one of the other and the edge of the foam.

The present invention also provides a volume-reducible and deformable inner layer body that contains the content liquid, an outer layer body that contains the inner layer body inside and has a vent hole that penetrates the peripheral wall of the mouth, and a covered cylinder that contains the vent hole inside. A pour-out cap having an outer wall having a shape and holding the outer wall on the peripheral wall of the mouth,
The dispensing cap has a through opening that communicates with the inner layer body and covers a partition wall that covers the upper opening of the inner layer body, and a liquid chamber that is provided inside the outer wall and communicates with the through opening and air that communicates with the vent hole A chamber,
The liquid chamber is provided between the bottom wall of the foam and the partition wall, which is spaced from the partition wall inside the cylindrical wall surrounding the through-opening, and the air chamber is the cylindrical wall Between the outer wall and the partition wall on the outside of
The cylindrical wall has an air outlet that communicates with the air chamber and opens toward the peripheral wall of the foam, and by pressing against the outer layer body, the content liquid of the inner layer body and the outer layer body and the inner layer body Of the extraction cap provided on the top wall side of the foam by individually introducing the air between the liquid chamber and the air outlet into the foam, mixing and foaming with the foam It is a double container that is poured out from a dispensing tube.

  In the present invention, a liquid outlet that leads to the liquid chamber and an air outlet that leads to the air chamber are provided on the outer wall of the outlet cap, and an outlet cylinder that surrounds the liquid outlet and the air outlet is provided. Inside, a foam that contacts both the liquid outlet and the air outlet is provided. That is, when the content liquid is poured out in the form of foam, the gas-liquid mixing chamber that has been provided conventionally is not required, so that the container size can be reduced.

  Either one of the liquid outlet and the air outlet is brought into contact with the center of the foam, and when the other is in contact with the edge of the foam while being directed to either one, it is introduced into the foam. The liquid and air can be easily mixed. Further, when both the liquid outlet and the air outlet are individually brought into contact with the central portion of the foam and are directed toward the other side, the content liquid and the air are easily mixed. Thereby, the texture of the foam to be poured out can be made finer.

  The outer wall is provided with a bulging portion that bulges toward the foam at the center of the foam, and either the liquid outlet or the air outlet is provided on the peripheral wall of the bulging portion to contact the foam. When either one is brought into contact with the edge of the foam, either one of the content liquid flowing out from the bulging portion and the air can be fed from behind the content liquid. And air becomes easier to mix, and the texture of the foam can be made finer.

  A liquid chamber is provided between the bottom wall and the partition wall of the foam, which is spaced from the partition wall on the inner side of the cylindrical wall surrounding the through opening, and an air chamber is provided on the outer side of the cylindrical wall. The liquid and air are individually introduced into the foam from the liquid chamber and the air outlet by providing an air outlet on the tube wall that leads to the air chamber and opens toward the peripheral wall of the foam. Therefore, even with such a configuration, the gas-liquid mixing chamber can be made unnecessary.

It is sectional drawing in the side view which shows 1st embodiment of the double container according to this invention. It is sectional drawing in the side view which shows 2nd embodiment of the double container according to this invention. It is sectional drawing in the side view which shows 3rd embodiment of the double container according to this invention. It is sectional drawing in the side view which shows 4th embodiment of the double container according to this invention. It is sectional drawing which expands and shows the check valve for external air introduction | transduction provided in the outer layer body.

  Hereinafter, the present invention will be described more specifically with reference to the drawings. In this specification, claims, and abstract, “upper” means the side on which the pouring cap is located with respect to the bottom of the outer layer body when the double container is placed on a horizontal plane. “Lower” is the opposite side.

  In FIG. 1, reference numeral 1A indicates a first embodiment of a double container according to the present invention. 1 A of double containers of this embodiment are provided with the inner layer body 2 which accommodates a content liquid, the outer layer body 3 which accommodates the inner layer body 2 inside, and the extraction | pouring cap 4A with which the outer layer body 3 is mounted | worn. The dispensing cap 4A includes an inner stopper 10A, a moving valve body 20, a holder 30A, an air check valve 40A, a cap body 50A, an outside air introduction check valve 60, a foam 70A, and an overcap. 80.

  The inner layer body 2 includes a storage space S for storing the content liquid and an upper opening 2a connected to the storage space S. The inner layer body 2 is made of a thin synthetic resin, and can be reduced in volume.

  The outer layer body 3 is formed by connecting a cylindrical mouth peripheral wall 3a with a reversible flexible trunk (not shown) and a bottom for closing the lower end of the trunk. A male screw portion 3b is provided on the outer peripheral surface of the mouth portion peripheral wall 3a. Further, a through hole (vent hole) 3c for taking in air between the inner peripheral body 2 and the inner peripheral body 2 is provided in the mouth peripheral wall 3a. Further, the outer peripheral surface provided with the vent hole 3c is provided in the vertical direction. A groove portion 3d is provided to cut out the male screw portion 3b.

  In this embodiment, the inner layer body 2 and the outer layer body 3 are made by laminating synthetic resins having low compatibility with each other in a peelable manner. Although not shown in the figure, between the inner layer body 2 and the outer layer body 3, one or a plurality of adhesive bands extending in the vertical direction and partially joining the inner layer body 2 and the outer layer body 3 are provided. May be. The inner layer body 2 and the outer layer body 3 can be obtained by blow molding a parison in which the synthetic resin material of the inner layer body 2 and the synthetic resin material of the outer layer body 3 are laminated. Alternatively, the preform formed into the test tube may be formed by biaxial stretch blow molding, or the outer layer body and the inner layer body may be formed separately, and then the inner layer body may be mounted in the outer layer body.

  The inner plug 10 </ b> A includes a plate-like partition wall 11 that covers the upper opening 2 a of the inner layer body 2. The partition wall 11 is provided with a through-opening 12, and is further provided with a cylindrical tubular wall 13 extending downward from the edge of the through-opening 12. The lower end portion of the cylindrical wall 13 is a reduced diameter portion 13a that reduces the diameter downward. A cylindrical seal wall 14 is provided on the lower surface of the partition wall 11 to sandwich the inner layer body 2 between the inner surface of the mouth peripheral wall 3a. On the upper surface of the partition wall 11, there are provided an inner plug annular wall 15 extending upward, and a groove portion 16 in which a part of the inner plug annular wall 15 is cut out and the upper surface of the partition wall 11 is recessed. Further, an edge wall 17 extending upward is provided at the edge of the partition wall 11, and a through hole 18 is provided at the base of the edge wall 17.

  In the cylindrical wall 13, a moving valve body 20 that is spherical in this embodiment is provided. The moving valve body 20 can seal the accommodation space S by being seated on the reduced diameter portion 13a. In addition, the moving valve body 20 moves away from the reduced diameter portion 13a by changing the posture of the outer layer body 3 from the standing posture to the tilted posture, and passes through the gap with the cylindrical wall 13 by pressing the body portion of the outer layer body 3. The content liquid can flow to the through opening 12.

  The holder 30 </ b> A includes a plate-like wall 31 disposed on the partition wall 11. The plate-like wall 31 is provided with an air through hole 32 at a site corresponding to the groove 16 and a liquid through hole 33 at a site corresponding to the through opening 12. A cylindrical connecting wall 34 that surrounds the liquid through-hole 33 and is inserted through the cylindrical wall 13 is provided on the lower surface of the plate-like wall 31. On the upper surface of the plate-like wall 31, there are provided an inner annular wall 35 that surrounds the air through-hole 32 and extends upward, and an outer annular wall 36 that is surrounded by the inner plug annular wall 15.

  The air check valve 40A has a shape in which a flat valve body 43 is integrally connected to the lower end portion of the cylindrical wall 41 via an arm 42, and functions as a so-called one-point valve. Note that the check valve is not limited to a one-point valve, and other check valves of other types such as a three-point valve can be used. The air check valve 40 </ b> A is attached such that the cylindrical wall 41 is inserted into the inner annular wall 35. Further, in normal times, the valve body 43 is seated on the plate-like wall 31 so as to cover the air through hole 32.

  The cap body 50 </ b> A includes a covered cylindrical outer wall 51. The outer wall 51 includes a cylindrical outer peripheral wall 51a and a flat plate-like top wall 51b that covers an upper portion of the outer peripheral wall 51a. In addition, a female screw portion 52 corresponding to the male screw portion 3 b is provided on the inner surface of the outer peripheral wall 51 a, whereby the cap body 50 A is detachably held on the mouth peripheral wall 3 a of the outer layer body 3. In addition, you may make it hold | maintain by undercut instead of a screw | thread.

  Further, on the lower surface of the top wall 51b, an annular inner seal wall 53 that is in airtight contact with the inner surface of the cylindrical wall 41, and an upper surface of the plate-like wall 31 and an inner surface of the outer annular wall 36 are liquid-tight. An annular outer seal wall 54 that abuts is provided. Thereby, on the inner side of the outer wall 51, an annular space K1 provided between the cylindrical wall 41 and the outer seal wall 54 (hereinafter, this space K1 may be referred to as “liquid chamber R1”), a cylinder An annular space that is provided between the outer peripheral wall 51a and the outer seal wall 54 and that communicates with the central space K2 through the groove 16 and the air through-hole 32. K3 (hereinafter, the spaces K2 and K3 may be collectively referred to as “air chamber R2”). In addition, a positioning rib 55 that abuts on the upper surface of the edge wall 17 is provided at the connecting portion between the top wall 51b and the outer peripheral wall 51a.

  In addition, the top wall 51b is provided with a through hole (air outlet) 56 (one in this embodiment) that communicates with the air chamber R2 at the center thereof, and on the radially outer side of the air outlet 56. A through hole (liquid outlet) 57 leading to the liquid chamber R1 is provided (two in this embodiment). Here, the liquid outlet 57 is directed toward the air outlet 56 by inclining the radially inner edge toward the air outlet 56.

  Furthermore, the top wall 51b is provided with a cylindrical pouring cylinder 58 that surrounds the air outlet 56 and the liquid outlet 57 and extends upward. A protrusion 58 a is provided on the inner surface of the dispensing cylinder 58.

  The top wall 51b is provided with a through-hole (outside air inlet) 59 that communicates with the air chamber R2 on the radially outer side. Further, a guide wall 59a extending downward is provided around the outside air introduction port 59, and a convex portion 59b protruding from the inner surface of the guide wall 59a is provided.

  The outside air check valve 60 is spherical in this embodiment and is provided inside the guide wall 59a. The check valve 60 for introducing outside air is normally separated from the lower surface of the top wall 51b and is retained by the projection 59b. When the outer layer body 3 is changed to a tilted posture, it comes into contact with the lower surface of the top wall 51b. This prevents the outflow of air from the air chamber R2.

  The foam 70A is a porous body having a large number of gaps inside such as a sponge, felt, or sintered body. In the present embodiment, the foam body 70A has a cylindrical shape, is disposed on the top wall 51b inside the pouring tube 58, and is retained by the protrusions 58a. Thereby, the foam 70 </ b> A comes into contact with both the air outlet 56 and the liquid outlet 57.

  The overcap 80 includes a plate-like top wall 81 and a cylindrical outer cylinder wall 82 that extends downward inward of the edge of the top wall 81 in the radial direction. In addition, an annular seal wall 83 is provided on the lower surface of the top wall 81 so as to come into contact with the inner surface of the dispensing cylinder 58 when mounted on the dispensing cylinder 58.

  When the content liquid is poured out from the double container 1A having such a configuration, after the overcap 80 is removed, the posture of the outer layer body 3 is changed to the tilted posture. Thereby, the moving valve body 20 seated on the reduced diameter portion 13a moves toward the connecting wall 34. When the body portion of the outer layer body 3 is pressed, the accommodation space S is pressurized via the air between the inner layer body 2 and the outer layer body 3, and the content liquid in the accommodation space S moves with the cylindrical wall 13. It passes through the gap with the valve body 20, enters the liquid chamber R <b> 1 through the through opening 12 and the liquid through hole 33, passes through the liquid outlet 57 as it is, and reaches the foam 70 </ b> A. The air between the inner layer body 2 and the outer layer body 3 reaches the space K3 through the vent 3c, the groove portion 3d, and the through hole 18, and further passes through the groove portion 16 and the air through hole 32, and the pressure. Accordingly, the valve body 43 is separated from the plate-like wall 31 and enters the space K2, and passes through the air outlet 56 as it is to reach the foam 70A. Then, the content liquid and air are mixed inside the foam 70A, and foams as it moves through the foam 70A. Here, since the liquid outlet 57 is directed toward the air outlet 56, the content liquid and air can be mixed more easily, and the texture of the bubbles can be made finer. Then, the foamed content liquid is poured out from the upper end opening through the dispensing cylinder 58.

  After the content liquid is poured out, the pressure on the body of the outer layer body 3 is released, and the posture of the outer layer body 3 is changed to the original standing posture. Here, since the outer layer body 3 tries to return to its original shape by its own restoring force, the inner layer body 2 and the outer layer body 3 are in a negative pressure state, and the valve body 43 closes the air through hole 32. To do. The check valve 60 for introducing outside air separates from the lower surface of the top wall 51b with its own weight and opens the outside air introduction port 59. As a result, the outside air enters the space K3 from the outside air introduction port 59, and is introduced between the inner layer body 2 and the outer layer body 3 through the through hole 18, the groove 3d, and the vent hole 3c. Thereby, only the outer layer body 3 is restored while the inner layer body 2 is deformed and deformed.

  Further, the movable valve body 20 is directed toward the reduced diameter portion 13a by returning the outer layer body 3 to the original standing posture or by reducing the pressure in the accommodation space S accompanying releasing the pressure on the body portion of the outer layer body 3. Move and sit down. As a result, the content liquid remaining in the liquid chamber R1 is drawn into the cylindrical wall 13 and bubbles remaining in the dispensing cylinder 58 can be drawn inward via the foam 70A (suck back function). Liquid dripping from the dispensing cylinder 58 can be prevented. When the content liquid remaining in the foam 70A is drawn back into the space K2 and enters the air through hole 32, the mixing ratio of the content liquid and air changes to foam quality when it is poured out next time. In this embodiment, the valve body 43 prevents the remaining content liquid from entering the air through-hole 32, so that a good foam quality can be obtained even after repeated dispensing. Can be maintained.

  Next, a second embodiment (double container 1B) of the double container according to the present invention will be described with reference to FIG. In addition, the site | part which has the same function as 1st embodiment mentioned above attaches | subjects the same code | symbol, and abbreviate | omits description.

  The double container 1B includes an inner layer body 2, an outer layer body 3, and a dispensing cap 4B. The dispensing cap 4B includes an inner stopper 10B, a moving valve body 20, an air check valve 40B, a cap body 50B, an outside air check valve 60, a foam 70A, and an overcap 80.

  The inner plug 10B has substantially the same shape as the above-described inner plug 10A, but the cylindrical wall 13 is moved to the central axis side of the outer layer body 3, the groove portion 16 is moved radially outward, The difference is that the height of the stopper annular wall 15 is increased.

  The air check valve 40 </ b> B is obtained by integrating the above-described holder 30 </ b> A and the air check valve 40 </ b> A. The air check valve 40 </ b> B includes a plate-like wall 44 disposed on the partition wall 11. The plate-like wall 44 is provided with a cylindrical wall 45 extending upward, and an outer annular wall 46 surrounded by the inner plug annular wall 15 is provided at the edge of the plate-like wall 44. Yes. A flat valve body 47 is integrally provided inside the cylindrical wall 45 via an arm 47a. The valve body 47 usually sits on the partition wall 11 so as to cover the groove 16. Further, the plate-like wall 44 is provided with a liquid through hole 48 at a portion corresponding to the through opening 12. A cylindrical connecting wall 49 that surrounds the liquid through-hole 48 and is inserted through the cylindrical wall 13 is provided on the lower surface of the plate-like wall 31.

  The cap body 50 </ b> B has an annular inner seal wall 53 a that is hermetically in contact with the inner surface of the cylindrical wall 45 on the lower surface of the top wall 51 b, and an upper surface of the plate-like wall 44 and an inner surface of the outer annular wall 46. An annular outer seal wall 54a that abuts closely is provided. Thereby, on the inner side of the outer wall 51, an annular space K1a provided between the cylindrical wall 45 and the outer seal wall 54a (hereinafter, this space K1a may be referred to as “liquid chamber R1a”), and the cylinder An annular space K3a (hereinafter referred to as space K2a) that is provided between the central space K2a surrounded by the wall 45 and between the outer peripheral wall 51a and the outer seal wall 54a and communicates with the central space K2a through the groove portion 16. , K3a may be collectively referred to as “air chamber R2a”).

  In addition, the top wall 51b is provided with a through hole (air outlet) 56a that communicates with the air chamber R2a and a through hole (liquid outlet) 57a that communicates with the liquid chamber R1a at the center thereof. In the present embodiment, one air outlet 56a and one liquid outlet 57a are provided, and the dispensing cylinder 58 surrounds both the air outlet 56a and the liquid outlet 57a. The air outlet 56a and the liquid outlet 57a are directed toward the other side.

  In the present embodiment, when the outer layer body 3 is changed to a tilted posture and the body portion is pressed, the content liquid passes through the gap between the cylindrical wall 13 and the movable valve body 20, passes through the through opening 12, and the liquid through hole. 48 enters the liquid chamber R1a, passes through the liquid outlet 57a as it is, and reaches the foam 70A. Further, the air reaches the space K3a through the vent 3c, the groove 3d, and the through hole 18, and further passes through the groove 16 to separate the valve body 47 from the partition wall 11 with the pressure, and enters the space K2a. It passes through the outlet 56a and reaches the foam 70A. In the present embodiment, since the air outlet 56a and the liquid outlet 57a are directed toward the other side, the content liquid and air can be mixed more easily, and the texture of the bubbles can be made finer.

  Next, a third embodiment (double container 1C) of the double container according to the present invention will be described with reference to FIG.

  The double container 1C includes an inner layer body 2, an outer layer body 3, and a dispensing cap 4C. The dispensing cap 4C includes an inner stopper 10A, a moving valve body 20, an air check valve 40A, a cap body 50C, an outside air check valve 60, a foam 70B, and an overcap 80.

  The cap body 50C is provided with a bulging portion 51c at the center of the top wall 51b, a slit-like through hole is provided in the peripheral wall of the bulging portion 51c, and the air outlet 56b that leads to the air chamber R2. It is a thing. Further, a through hole (liquid outlet) 57b communicating with the liquid chamber R1 is provided on the outer side in the radial direction of the bulging portion 51c in the top wall 51b. Here, the liquid outlet 57b is directed toward the air outlet 56b by inclining the radially inner edge toward the bulging portion 51c.

  In the present embodiment, the foam 70B has a recess corresponding to the bulging portion 51c. And it arrange | positions on the top wall 51b inside the extraction pipe | tube 58, and is hold | maintained by protrusion 58a. Thereby, the foam 70B contacts both the air outlet 56b and the liquid outlet 57b.

  In the present embodiment, when the outer layer body 3 is changed to a tilted posture and the body portion is pressed, the content liquid passes through the gap between the cylindrical wall 13 and the movable valve body 20, passes through the through opening 12, and the liquid through hole. 33 enters the liquid chamber R1, passes through the liquid outlet 57b as it is, and reaches the foam 70B. In addition, air reaches the space K3 through the vent 3c, the groove 3d, and the through hole 18, and further passes through the groove 16 and the air through hole 32, and the valve body 43 is separated from the plate-like wall 31 by the pressure. Enters the space K2, passes through the air outlet 56b as it is, and reaches the foam 70B. In the present embodiment, the content liquid can be fed from behind the air flowing out from the air outlet 56b, so that the content liquid and air can be mixed more easily, and the foam texture can be further refined. Since the liquid outlet 57b of the present embodiment is directed toward the air outlet 56b, the content liquid and air can be further easily mixed.

  Next, 4th embodiment (double container 1D) of the double container according to this invention is described, referring FIG.

  The double container 1D includes an inner layer body 2, an outer layer body 3A, and a dispensing cap 4D. The dispensing cap 4D includes an inner stopper 10C, a check valve 90, a foam 70C, a cap body 50D, and a lid 100.

  The outer layer body 3A is provided with a slit 3e extending in the vertical direction at the body portion thereof. The slit 3e is normally closed with the end faces of the slit 3e in contact with each other, but when the space between the inner layer body 2 and the outer layer body 3A is in a reduced pressure state, the end faces are slightly separated from each other, Outside air can be taken into this space. That is, the slit 3e functions as a check valve for introducing outside air. In the present embodiment, since the inner layer body 2 and the outer layer body 3 are provided close to the adhesive band 3f that partially joins, the outer layer body 3 around the slit 3e is less likely to be deformed. Thereby, the malfunction that the end surfaces of the slit 3e remain spaced apart can be effectively prevented. In the present embodiment, the two slits 3e are provided with the adhesive band 3f interposed therebetween, but any number can be provided.

  Further, in place of the slit 3e, as shown in FIG. 5, the outer layer body 3A holds a check valve 3g for introducing the outside air that is tapered toward the inner layer body 2 and has a slit 3h at the tip thereof. You may let them.

  The inner plug 10 </ b> C includes a through opening 12 at the center of the partition wall 11. The partition wall 11 is provided with an annular recess 11a that surrounds the through-opening 12 and opens upward. Further, the inner plug 10C includes a stepped portion 17a at the connecting portion between the partition wall 11 and the edge wall 17, and the through-hole 18 penetrates the stepped portion 17a in the radial direction.

  A check valve 90 is provided in the upper part of the inner stopper 10C. The check valve 90 includes a cylindrical wall 91 having a cylindrical shape, a valve body 92 having a disk shape on the lower side and a columnar shape on the upper side, and the cylindrical wall 91 and the valve body 92. And a disc-shaped valve body 94 provided outside the cylindrical wall 91, and a hole (air outlet) 95 penetrating the cylindrical wall 91 above the valve body 94. .

  The check valve 90 is positioned and held with respect to the partition wall 11 by inserting the lower portion of the cylindrical wall 91 into the annular recess 11a. In this state, the valve body 92 is seated on the upper surface of the partition wall 11 to close the through-opening 12 leading to the accommodation space S, and the outer peripheral end of the valve body 94 is seated on the upper surface of the step portion 17a and the vent 3c. The through hole 18 leading to is closed.

  The foam body 70C is cylindrical in this embodiment, and is held on the inner surface of the cylindrical wall 91 and the valve body 92 is movably inserted through the hole in the center.

  In the cap body 50D, a covered cylindrical outer wall 51 surrounds the inner plug 10C, the check valve 90, and the foam 70C and is held by the mouth peripheral wall 3a. Thereby, inside the outer wall 51, there is a liquid chamber R1b (specifically, a space formed between the bottom wall of the foam 70C and the partition wall 11 inside the cylindrical wall 91) leading to the through-opening 12, and ventilation. An air chamber R2b (specifically, a space formed between the outer wall 51 and the partition wall 11 on the outer side of the cylindrical wall 91) is formed which leads to the opening 3c. In addition, the outer wall 51 is provided with a dispensing cylinder 58b having a diameter that decreases upward just above the foam 70C.

  The lid body 100 includes a top wall 101 that has a shape in which a central portion is bulged outward and covers the top wall 51 b of the outer wall 51. The top wall 101 is integrally connected to the outer wall 51 via a hinge 102. The lid 100 may be separated from the cap body 50D without providing the hinge 102 and attached to the cap body 50D with a screw or undercut. A rib 103 is provided on the back surface of the top wall 101 so as to come into contact with the top surface of the valve body 92 when the lid body 100 is closed. Thereby, even if the inside of the accommodation space S may be pressurized with the lid 100 closed, the through-opening 12 is maintained closed by the valve body 92, so that inadvertent dispensing of the content liquid is performed. Can be prevented.

  In the present embodiment, when the posture of the outer layer body 3A is changed to the tilted posture and the body portion is pressed, the inside of the accommodation space S is pressurized. As a result, the valve body 92 is separated from the upper surface of the partition wall 11 and the through opening 12 Is released. Thus, the content liquid enters the liquid chamber R1b from the through opening 12 and flows through the gap formed around the elastic piece 93 from the bottom wall of the foam 70C into the foam 70C. At this time, the space between the inner layer body 2 and the outer layer body 3A is pressurized, so that the valve body 94 is separated from the upper surface of the stepped portion 17a, and the through hole 18 is opened. Thereby, the air between the inner layer body 2 and the outer layer body 3A reaches the air chamber R2b through the vent 3c, the groove 3d, and the through hole 18, and passes through the air outlet 95 from the side wall of the foam 70C. It flows in the foam 70C. That is, even in this embodiment, the conventional gas-liquid mixing chamber becomes unnecessary. In addition, since the direction in which the content liquid flows in the foam 70C (from the bottom to the top) and the direction in which the air flows (from the outside in the radial direction to the inside) are different, the content liquid and the air are more easily mixed in the foam 70C. The texture of the foam can be made fine.

  After the content liquid is poured out, the pressure on the body of the outer layer body 3A is released. As a result, the inside of the accommodation space S returns to normal pressure, so that the valve body 92 is seated on the upper surface of the partition wall 11 and the accommodation space S is closed. Further, since the outer layer body 3A tries to return to its original shape by its own restoring force, the inner layer body 2 and the outer layer body 3 are in a negative pressure state. As a result, the valve body 94 is seated on the upper surface of the stepped portion 17a and the through hole 18 is closed, while outside air is introduced between the inner layer body 2 and the outer layer body 3 through the slit 3e. Thus, only the outer layer body 3A can be restored while the inner layer body 2 is deformed and deformed.

  The double container according to the present invention is not limited to these embodiments, and various modifications can be made within the scope according to the claims. For example, in the first and third embodiments described above, the air outlet is brought into contact with the center of the foam and the liquid outlet is brought into contact with the edge of the foam. You may comprise so that an outlet may be made to contact and an air outlet may be made to contact the edge of a foam. The configurations of the first to fourth embodiments may be interchanged. For example, the first to third embodiments may be provided with the slits of the outer layer body described in the fourth embodiment, or the fourth embodiment. You may provide the check valve for external air introduction | transmission provided in the cap main body demonstrated in the 1st-3rd embodiment in the form. Moreover, you may provide the slit of an outer layer body in the bottom part of an outer layer body.

  According to the present invention, contact between the contained content liquid and the outside air can be avoided, and the content liquid can be poured out in the form of bubbles without providing a space for premixing the content liquid and air. It becomes possible to provide a new double container.

1A, 1B, 1C, 1D Double container 2 Inner layer 2a Upper opening 3, 3A Outer layer 3a Mouth peripheral wall 3b Male thread 3c Vent 3d Groove 3e Slit 3f Adhesive band 3g Outside air introduction check valve 3h Slit 4A, 4B 4C, 4D Discharge cap 10A, 10B, 10C Inner plug 11 Bulkhead 11a Annular recess 12 Through opening 13 Tubular wall 13a Reduced diameter portion 14 Seal wall 15 Inner plug annular wall 16 Groove portion 17 Edge wall 17a Step portion 18 Through hole 20 Moving valve body 30A Holder 31 Plate-like wall 32 Air through hole 33 Liquid through hole 34 Connection wall 35 Inner annular wall 36 Outer annular wall 40A, 40B Air check valve 41 Cylindrical wall 42 Arm 43 Valve body 44 Plate Wall 45 Cylindrical wall 46 Outer annular wall 47a Arm 47 Valve body 48 Liquid through hole 49 Connecting wall 50A, 50B, 50C, 50D Key Main body 51 outer wall 51a outer peripheral wall 51b top wall 51c bulging part 52 female threaded part 53 inner seal wall 53a inner seal wall 54 outer seal wall 54a outer seal wall 55 positioning rib 56 air outlet 56a air outlet 56b air outlet 57 Liquid outlet 57a Liquid outlet 57b Liquid outlet 58 Outlet cylinder 58a Protrusion 58b Outlet cylinder 59 Outside air inlet 59a Guide wall 59b Convex part 60 Outside air introduction check valve 70A, 70B, 70C Foam 80 Overcap 81 Top Wall 82 Outer cylinder wall 83 Seal wall 90 Check valve 91 Tube wall 92 Valve body 93 Elastic piece 94 Valve body 95 Air outlet 100 Cover body 101 Top wall 102 Hinge 103 Rib K1 space K1a space K2 space K2a space K3 space K3a space R1 liquid chamber R1a liquid chamber R1b liquid chamber R2 air chamber R2a empty Room R2b air chamber S accommodating space

Claims (5)

A volume-deformable inner layer body that contains the content liquid, an outer layer body that contains the inner layer body inside and has a vent hole that penetrates the peripheral wall of the mouth, and a covered cylindrical outer wall that contains the vent hole inside. A pouring cap that holds the outer wall on the peripheral wall of the mouth,
The dispensing cap has a through opening that communicates with the inner layer body and covers a partition wall that covers the upper opening of the inner layer body, and a liquid chamber that is provided inside the outer wall and communicates with the through opening and air that communicates with the vent hole A chamber,
The outer wall has a liquid outlet that communicates with the liquid chamber and an air outlet that communicates with the air chamber, and a pouring cylinder that surrounds the liquid outlet and the air outlet.
A foam that is in contact with both the liquid outlet and the air outlet is provided inside the dispensing cylinder, and the inner layer body contents liquid, the outer layer body, and the inner layer body are pressed by the outer layer body. The double container which introduce | transduces the air between these into the said foam separately from the said liquid outflow port and the said air outflow port, is mixed and foamed with this foam, and is poured out from this extraction pipe | tube.   2. Either one of the liquid outlet or the air outlet is brought into contact with a central portion of the foam, and one of the liquid outlet and the air outlet is brought into contact with an edge of the foam while being directed toward either one. Double container as described in.   The double container according to claim 1, wherein both the liquid outlet and the air outlet are individually brought into contact with a central portion of the foam, and each is directed toward the other side.   The outer wall has a bulging portion that bulges toward the foam at a central portion of the foam, and either one of the liquid outlet or the air outlet is provided on a peripheral wall of the bulged portion. The double container according to claim 1, wherein the foam is brought into contact with the foam, and one of the other is brought into contact with an edge of the foam. A volume-deformable inner layer body that contains the content liquid, an outer layer body that contains the inner layer body inside and has a vent hole that penetrates the peripheral wall of the mouth, and a covered cylindrical outer wall that contains the vent hole inside. A pouring cap that holds the outer wall on the peripheral wall of the mouth,
The dispensing cap has a through opening that communicates with the inner layer body and covers a partition wall that covers the upper opening of the inner layer body, and a liquid chamber that is provided inside the outer wall and communicates with the through opening and air that communicates with the vent hole A chamber,
The liquid chamber is provided between the bottom wall of the foam and the partition wall, which is spaced from the partition wall inside the cylindrical wall surrounding the through-opening, and the air chamber is the cylindrical wall Between the outer wall and the partition wall on the outside of
The cylindrical wall has an air outlet that communicates with the air chamber and opens toward the peripheral wall of the foam, and by pressing against the outer layer body, the content liquid of the inner layer body and the outer layer body and the inner layer body Of the extraction cap provided on the top wall side of the foam by individually introducing the air between the liquid chamber and the air outlet into the foam, mixing and foaming with the foam A double container that is poured out from a dispensing tube.

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