JP6328066B2 - Double container - Google Patents

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 particularly to a technique capable of switching the properties of the content liquid to be poured out.

  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 content liquid is poured out by pressing the body part of the outer layer body, while the body part is restored after the release of the pressure, and between the inner layer body and the outer layer body 2. Description of the Related Art A double container (also referred to as a delamination container or a delamination container) that can reduce the volume of an inner layer by introducing outside air is known. For example, Patent Document 1 discloses a squeeze-type double container in which a liquid content can be mixed with air to be poured out into a foam.

JP 2009-149327 A

  By the way, depending on the intended use, it may be preferable to pour the content liquid directly without making it foam. For this reason, the new double container which can switch easily the property of the content liquid to pour by simple operation is calculated | required.

  An object of the present invention is to solve such problems, a state in which the content liquid can be directly poured out without being mixed with air, and the content liquid is mixed with air to form a foam. It aims at proposing a new double container which can be easily switched between the state where it can be poured out.

The present invention includes a volume-reducible and deformable inner layer body that contains a content liquid, and an outer layer body that has a vent hole that penetrates the peripheral wall of the mouth and forms an internal space between the inner layer body and the vent hole. And a pouring cap that has a foam that causes the content liquid of the inner layer body and the air in the internal space to pass through when pressed against the outer layer body to foam the content liquid, and is attached to the peripheral wall of the mouth. A double container,
The dispensing cap is
A partition wall that covers the upper opening of the inner layer body and has a dispensing cylinder that communicates with the inner layer body,
A base that surrounds the vent hole and is held by the peripheral wall of the mouth portion and that houses the partition wall therein;
An air passage connected to the vent hole is formed between the partition wall and the base, and an air introduction port for introducing air from the air passage to the foam, and the pouring to the foam A liquid introduction port for introducing the content liquid from the cylinder portion, and further slidably abuts the outer peripheral surface of the extraction cylinder portion, surrounds the liquid introduction port, and moves along the axis of the extraction cylinder portion A nozzle head having a sliding tube portion that enables
An air check valve having a valve body for closing and opening the air passage by sitting on and separating from the partition;
The nozzle head sandwiches the valve body between the sliding cylinder part and the partition wall by moving in a direction approaching the partition wall, and blocks the inflow of air to the foam, while moving away from the partition wall. This is a double container that allows air to flow into the foamed body by separating the sliding cylinder part from the valve body by the movement of.

  The nozzle head has a vertical rib or a vertical groove that is linked to a vertical groove or a vertical rib provided in the base and prevents the nozzle head from rotating with respect to the base when moving along the axis of the extraction tube portion. Is preferred.

  It is preferable that the nozzle head has an internal thread portion that is linked to an external thread portion provided on the base and moves the nozzle head along the axis of the extraction cylinder portion by rotating the nozzle head.

  According to the present invention, by moving the nozzle head in a direction approaching the partition wall, it is possible to sandwich the valve body between the sliding cylinder part and the partition wall and block the inflow of air to the foam. If the outer layer body is pressed in this state, only the content liquid can be directly poured out. In addition, by moving the nozzle head away from the partition wall, the sliding cylinder part is separated from the valve body so that air can flow into the foam. The liquid can be mixed with air and foamed out. That is, since the properties of the content liquid to be dispensed can be switched by a simple operation that simply moves the nozzle head in the up and down direction, the usability is improved.

It is sectional drawing in the state which pours out the content liquid directly which shows one Embodiment of the double container according to this invention. It is a figure explaining the condition where the content liquid is poured out in the state shown in FIG. It is a figure explaining the condition where the content liquid which remained in the nozzle is pulled back. It is the figure switched from the state of FIG. 1 to the state which pours out the content liquid in foam form. It is a figure explaining the situation where a valve body leaves | separates from a partition and the air of internal space flows through an air path. It is sectional drawing in the state which pours out the content liquid directly which shows other embodiment of the double container according to this invention. It is the figure which switched from the state of FIG. 6 to the state which pours out the content liquid in foam form.

  Hereinafter, the present invention will be described more specifically with reference to the drawings. In this specification, claims, and abstract, “upper” is the side where the nozzle head is located with respect to the peripheral wall of the mouth of the outer layer body, and “lower” is the opposite side. is there.

  FIG. 1 shows one embodiment of a double container according to the present invention. The double container of the present embodiment includes an inner layer body 1 that contains the content liquid, an outer layer body 2 that houses the inner layer body 1 inside, and a dispensing cap 3 that is attached to the outer layer body 2. The dispensing cap 3 includes an inner plug 4, a moving valve body 5, an air check valve 6, a base 7, and an outside air introduction check valve 8, and further includes a nozzle head 9. The nozzle head 9 includes a holder 10, a nozzle head main body 11, a foam 12, and a lid 13.

  The inner layer body 1 includes a storage space S for storing the content liquid and an upper opening 1a connected to the storage space S. The inner layer body 1 is made of a thin synthetic resin and can be deformed and reduced in volume.

  The outer layer body 2 is formed by connecting a cylindrical body having a reversible flexibility (not shown) and a bottom for closing a lower end of the body to a cylindrical mouth peripheral wall 2a. A male screw portion 2b is provided on the outer surface of the mouth peripheral wall 2a. Further, the peripheral wall 2a is provided with a through hole (vent hole) 2c for taking air into an internal space formed between the inner layer body 1 and the outer surface provided with the vent hole 2c. A groove portion 2d is formed in the male screw portion 2b in the vertical direction.

  In this embodiment, the inner layer body 1 and the outer layer body 2 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 1 and the outer layer body 2, there is provided one or a plurality of adhesive bands that extend in the vertical direction and partially join the inner layer body 1 and the outer layer body 2 May be. The inner layer body 1 and the outer layer body 2 can be obtained by blow molding a parison in which the synthetic resin material of the inner layer body 1 and the synthetic resin material of the outer layer body 2 are laminated. Alternatively, the preform formed in 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 4 includes a plate-like partition wall 4 a that covers the upper opening 1 a of the inner layer body 1. The partition wall 4a is provided with a cylindrical extraction tube portion 4b penetrating vertically. The lower end portion of the extraction cylinder portion 4b is a reduced diameter portion 4c that decreases in diameter downward. In addition, a cylindrical seal wall 4d is provided on the lower surface of the partition wall 4a so as to sandwich the inner layer body 1 between the inner surface of the peripheral wall 2a of the mouth. The upper surface of the partition wall 4a is provided with a recess 4e that is open upward, and the surface of the partition wall 4a that forms the recess 4e is provided with a groove portion 4f. Further, an edge wall 4g extending upward is provided at the edge of the partition wall 4a, and a through hole 4h is provided at the base of the edge wall 4g.

  A moving valve body 5 that is spherical in the present embodiment is provided in the dispensing cylinder portion 4b. The moving valve body 5 can seal the accommodation space S by being seated on the reduced diameter portion 4c. Further, the movable valve body 5 is separated from the reduced diameter portion 4c by changing the posture of the outer layer body 2 from the standing posture to the tilted posture, and the gap between the outer cylinder body 2 and the dispensing cylinder portion 4b is pressed by pressing the body portion of the outer layer body 2. The content liquid can be poured out from the storage space S.

  The air check valve 6 is formed by integrally connecting a thin valve body 6b having a disk shape to an inner surface of a cylindrical annular wall 6a. The annular wall 6a is fitted and held in the recess 4e. A passage through which air passes is formed between the annular wall 6a and the groove 4f. The valve body 6b is in airtight contact with the upper surface of the partition wall 4a and normally closes the passage between the annular wall 6a and the groove 4f, but the pressure of air passing through the passage increases. Then, the passage is opened away from the partition wall 4a.

  The base 7 is provided with a cylindrical outer peripheral wall 7a that surrounds the vent 2c and that has a lower end portion hermetically contacting the outer surface of the peripheral wall 2a. A female screw portion 7b corresponding to the male screw portion 2b is provided on the inner surface of the outer peripheral wall 7a. In addition, you may make it hold | maintain by undercut instead of a screw | thread. A top wall 7c extending radially inward is provided at the upper part of the outer peripheral wall 7a, and a cylindrical shape that extends downward and prevents the annular wall 6a from falling off at the inner edge of the top wall 7c. An inner peripheral wall 7d is provided.

  The top wall 7c is provided with a through hole (outside air introduction port) 7e that communicates with the outside world on the radially outer side of the inner peripheral wall 7d. A cylindrical guide wall 7f extending downward is provided around the outside air introduction port 7e.

  The outer peripheral wall 7a is provided with a recess 7h extending in the vertical direction and recessed inward in the radial direction, and a longitudinal groove 7i having a longer extension length and a deeper depth than the recess 7h. It has been.

  In this embodiment, the check valve 8 for introducing outside air is spherical and is provided inside the guide wall 7f. The outside air introduction check valve 8 is normally separated from the lower surface of the top wall 7c and is retained by the edge wall 4g. When the outer layer body 2 is changed to a tilted posture, the outer air body 2 comes into contact with the lower surface of the top wall 7c. Thus, the outside air inlet 7e can be closed.

  The holder 10 is slidably abutted on the outer surface of the extraction cylinder portion 4b, and the holder 10 is vertically moved along the axis of the extraction cylinder portion 4b (in the present embodiment, coincides with the axis O of the mouth peripheral wall 2a). The cylindrical sliding cylinder part 10a which can move to is provided. When the holder 10 moves downward, the valve body 6b is sandwiched between the upper surface of the partition wall 4a and the lower surface of the sliding cylinder portion 10a. This reliably blocks the flow of air through the passage between the annular wall 6a and the groove 4f.

  The holder 10 includes a partition wall 10b that covers the upper side of the extraction cylinder part 4b and divides the inside of the extraction cylinder part 4b and the upper side of the extraction cylinder part 4b. 10b is integrally connected. Further, a rod-like stopper 10c that is integrally connected to the partition wall 10b and prevents the moving valve body 5 from slipping out is provided on the radially inner side of the sliding cylinder portion 10a.

  A concave portion 10 d is provided on the upper surface of the holder 10. A through hole (liquid introduction port) 10e that penetrates the partition wall 10b and communicates with the recess 10d is provided on the radially inner side of the sliding cylinder portion 10a.

  The nozzle head body 11 includes a peripheral wall 11a that surrounds the base 7 and an upper wall 11b that is integrally connected to the upper portion of the peripheral wall 11a. On the inner surface of the peripheral wall 11a, there are provided a projection 11c that enters the recess 7h and prevents the nozzle head main body 11 from coming off, and a vertical rib 11d that enters the vertical groove 7i and holds the nozzle head main body 11 against rotation.

  A cylindrical tubular wall 11e extending downward is integrally provided on the lower surface of the upper wall 11b. For example, a protrusion or the like is provided on the outer surface of the cylindrical wall 11e, and is configured to slidably and airtightly contact the inner surface of the inner peripheral wall 7d. Further, the inner surface of the cylindrical wall 11 e is provided with a projection or the like for fitting and holding the holder 10, and a passage through which air flows is formed between the outer surface of the holder 10. This passage communicates with the recess 10d through the air inlet 11f. That is, between the inner plug 4, the base 7, and the nozzle head main body 11, from the internal space formed between the inner layer body 1 and the outer layer body 2, the vent 2c, the groove 2d, the through hole 4h, the groove 4f, and An air passage T is formed which passes through a gap formed between the separated valve body 6b and the partition wall 4a and reaches the air introduction port 11f through a passage formed between the holder 10 and the cylindrical wall 11e. .

  Furthermore, the upper wall 11b is provided with a communication hole 11g communicating with the outside air introduction port 7e.

  A cylindrical pouring nozzle 11h extending upward is provided on the upper surface of the upper wall 11b. The top of the dispensing nozzle 11h is inclined so that the height on the side where a hinge, which will be described later, is located is the lowest, and the height on the side where the finger hook is located is the highest. The top is provided with a lip whose tip is curved radially outward. Furthermore, the protrusion 11i is provided in the inner surface of the extraction nozzle 11h.

  The foam 12 has a large number of gaps inside such as sponge, felt, and sintered porous body. In the present embodiment, the foam 12 has a stepped columnar shape with a small diameter at the top and a large diameter at the bottom. In addition, even if the foam 12 moves upward, the air inlet 11f is made to face the peripheral wall of the foam 12. Thereby, the liquid from the liquid inlet 10e and the air from the air inlet 11f are individually introduced into the foam 12 respectively.

  The lid 13 includes a plate-like top wall 13a and an outer peripheral wall 13b extending downward from the edge of the top wall 13a. The outer peripheral wall 13 b is provided with a hinge 13 c that is integrally connected to the peripheral wall 11 a of the nozzle head body 11. Further, on the opposite side of the hinge 13c across the axis O, a finger hooking portion 13d that protrudes radially outward is provided.

  In the double container having such a configuration, the valve body 6b is located between the upper surface of the partition wall 4a and the lower surface of the sliding cylinder portion 10a in a state where the nozzle head body 11 is moved downward as shown in FIG. Since it is pinched, the air path T is always blocked by the valve body 6b. In this state, when the outer layer body 2 is changed to a tilted posture as shown in FIG. 2, the moving valve body 5 seated on the reduced diameter portion 4c moves toward the stopper 10c. Further, since the outside air introduction check valve 8 abuts on the lower surface of the ceiling wall 7c and closes the outside air introduction port 7e, the internal space and the outside world are not in communication. When the body portion of the outer layer body 2 is pressed here, the accommodation space S is pressurized via the air in the internal space, and the content liquid in the accommodation space S passes through the gap between the dispensing cylinder portion 4b and the moving valve body 5. And reaches the foam 12 through the liquid inlet 10e. On the other hand, the air in the internal space is blocked from flowing into the foam 12 because the valve body 6b is sandwiched between the upper surface of the partition wall 4a and the lower surface of the sliding cylinder portion 10a. For this reason, only the content liquid can be poured out from the dispensing nozzle 11h.

  After the content liquid is poured out, the pressure on the body of the outer layer body 2 is released, and the posture of the outer layer body 2 is changed to the original standing posture. Here, the check valve 8 for introducing outside air separates from the lower surface of the top wall 7c with its own weight, and opens the outside air introduction port 7e. Further, the outer layer body 2 tries to return to its original shape by its own restoring force, and the inner space is in a negative pressure state. As a result, the outside air is introduced into the internal space from the communication hole 11g through the outside air introduction port 7e, the through hole 4h, the groove 2d, and the ventilation port 2c. Thereby, only the outer layer body 2 is restored while the inner layer body 1 is deformed and deformed.

  Further, as shown in FIG. 3, the movable valve body 5, as shown in FIG. 3, is obtained by returning the outer layer body 2 to the original standing posture or reducing the pressure in the housing space S accompanying releasing the pressure on the body of the outer layer body 2. It moves toward the reduced diameter portion 4c. Further, the foam 12 also moves toward the liquid inlet 10e. As a result, the contents remaining inside the pouring nozzle 11h can be drawn inward (suck back function), so that dripping from the pouring nozzle 11h can be prevented. In the case of using the foam 12 having a small gap size inside, the content is difficult to pass through the inside of the foam 12 when the content is drawn, but the foam 12 has a small diameter at the top and a recess. Since a gap is formed between 10d, the contents can be drawn through this gap. For this reason, even when a small gap such as a sintered porous body is employed, the suck back function can be sufficiently exhibited.

  Further, in order to dispense the content liquid in the form of foam, the nozzle head body 11 is moved upward as shown in FIG. As described above, since the vertical ribs 11 d of the nozzle head main body 11 enter the vertical grooves 7 i of the base 7, the nozzle head main body 11 can be prevented from rotating with respect to the base 7. Note that the vertical groove 7 i may be provided in the nozzle head main body 11 and the vertical rib 11 d may be provided in the base 7. Further, since the protrusion 11 c of the nozzle head main body 11 enters the recess 7 h of the base 7, the nozzle head main body 11 can be prevented from coming off from the base 7.

  In this state, since the sliding cylinder portion 10a is separated from the upper surface of the partition wall 4a, when the pressure of the inner space is increased by pressing the body portion of the outer layer body 2, the valve body 6b that is in contact with the upper surface of the partition wall 4a As shown in FIG. 5, it separates from the partition 4a. As a result, the air in the internal space passes through the gap between the separated valve body 6b and the partition wall 4a and reaches the foam body 12 through the air inlet port 11f, so that the content flows into the foam body 12 from the liquid inlet port 10e. When mixed with the liquid, the content liquid foams, and the foam-like content liquid is poured out from the dispensing nozzle 11h.

  Next, another embodiment of the double container according to the present invention will be described with reference to FIGS. In addition, the site | part which has a function similar to embodiment mentioned above attaches | subjects the same code | symbol to drawing, and abbreviate | omits description.

  The air check valve 36 of the present embodiment has an annular wall 36a that is taller than the annular wall 6a of the air check valve 6 of the above-described embodiment. A thin outer valve body 36b having a disk shape is integrally connected to the outer surface of the annular wall 36a. The outer valve body 36b is in airtight contact with the lower surface of the top wall 7c and normally closes the outside air introduction port 7e. However, when the internal space is in a negative pressure state, the outside valve body 36b is separated from the top wall 7c and is exposed to the outside air. The introduction port 7e is opened. By providing the outer valve body 36b, the spherical outside air check valve 8 described above is omitted.

  The base 37 is provided with a male screw portion 37a in place of the recess 7h and the vertical groove 7i with respect to the base 7 described above. Further, the nozzle head main body 41 is provided with a female screw portion 41a linked to the male screw portion 37a in place of the projection 11c and the vertical rib 11d with respect to the nozzle head main body 11 described above. The foam 42 has a columnar shape and is provided immovably with respect to the recess 10d. In addition, in order not to interfere with the suck back function, the foam 42 has a relatively large gap existing inside.

  In the double container of the present embodiment, when the nozzle head main body 41 is moved downward as shown in FIG. 6, the valve body 6b is located between the upper surface of the partition wall 4a and the lower surface of the sliding cylinder portion 10a. Therefore, when the body portion of the outer layer body 2 is pressed, only the content liquid is poured out from the dispensing nozzle 11h. Further, when the nozzle head main body 41 is rotated in a direction in which the linkage between the male screw portion 37a and the female screw portion 41a is loosened, the nozzle head main body 41 rises and the sliding cylinder portion 10a can be separated from the upper surface of the partition wall 4a. When the body portion of the outer layer body 2 is pressed in this state, the valve body 6b is separated from the upper surface of the partition wall 4a as the pressure in the inner space increases, so that air can be introduced into the foam body 42. The liquid can be poured out.

  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, instead of a lid integrally connected to the nozzle head main body by a hinge, a lid that is separate from the nozzle head main body may be adopted, and the nozzle head main body may be attached with screws or undercuts. . Further, in addition to the above-described vents, other vents for taking air into the internal space may be provided at the trunk or bottom of the outer layer body. In this case, a means (for example, a check valve or a slit-like vent) that prevents the air in the inner space from leaking from other vents when the outer layer body is pressed or which prevents the leak is provided. Is preferred.

1: Inner layer body 1a: Upper opening 2: Outer layer body 2a: Portion peripheral wall 2b: Male screw part 2c: Vent port 2d: Groove part 3: Discharge cap 4: Inner plug 4a: Partition wall 4b: Discharge cylinder part 4c: Reduced diameter 4d: seal wall 4e: recess 4f: groove 4g: edge wall 4h: through hole 5: moving valve body 6: air check valve 6a: annular wall 6b: valve body 7: base 7a: outer peripheral wall 7b: female thread 7c: Top wall 7d: Inner peripheral wall 7e: Outside air introduction port 7f: Guide wall 7h: Recess 7i: Vertical groove 8: Check valve 9 for introducing outside air 9: Nozzle head 10: Holder 10a: Sliding tube portion 10b: Partition wall 10c: stopper 10d: recess 10e: liquid inlet 11: nozzle head body 11a: peripheral wall 11b: upper wall 11c: protrusion 11d: vertical rib 11e: cylindrical wall 11f: air inlet 11g: communication hole 11h: dispensing nozzle 11i : Protrusion 12: Foam 13: Lid 13a: Top 13b: outer peripheral wall 13c: hinge 13d: finger hook portion 36: air check valve 36a: annular wall 36b: outer valve body 37: base 37a: male screw portion 41: nozzle head body 41a: female screw portion 42: foam O: mouth Axis of the peripheral wall (Axis of the extraction cylinder)
S: accommodation space T: air passage

Claims (3)

A volume-reducible and deformable inner layer body that contains the content liquid, an outer layer body that has a vent hole that penetrates the peripheral wall of the mouth portion and forms an internal space between the inner layer body and the vent hole, and the outer layer body A double container having a foam for causing the content liquid of the inner layer body and the air in the internal space to pass therethrough in accordance with the pressing to the foam, and a pouring cap attached to the peripheral wall of the mouth There,
The dispensing cap is
A partition wall that covers the upper opening of the inner layer body and has a dispensing cylinder that communicates with the inner layer body,
A base that surrounds the vent hole and is held by the peripheral wall of the mouth portion and that houses the partition wall therein;
An air passage connected to the vent hole is formed between the partition wall and the base, and an air introduction port for introducing air from the air passage to the foam, and the pouring to the foam A liquid introduction port for introducing the content liquid from the cylinder portion, and further slidably abuts the outer peripheral surface of the extraction cylinder portion, surrounds the liquid introduction port, and moves along the axis of the extraction cylinder portion A nozzle head having a sliding tube portion that enables
An air check valve having a valve body for closing and opening the air passage by sitting on and separating from the partition;
The nozzle head sandwiches the valve body between the sliding cylinder part and the partition wall by moving in a direction approaching the partition wall, and blocks the inflow of air to the foam, while moving away from the partition wall. A double container that allows air to flow into the foamed body by separating the sliding cylinder part from the valve body by movement of.   The nozzle head has a longitudinal rib or a longitudinal groove that is linked to a longitudinal groove or a longitudinal rib provided in the base and prevents the nozzle head from rotating with respect to the base when moving along the axis of the extraction tube portion. Item 2. The double container according to Item 1.   2. The nozzle head according to claim 1, wherein the nozzle head includes a female screw portion that is linked to a male screw portion provided on the base and moves the nozzle head along an axis of the extraction cylinder portion by rotating the nozzle head. Heavy container.

Images