JP2015127236A - Double container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double container capable of preventing the jetting of a content even when an ambient temperature changes.SOLUTION: A double container 1 comprises: a base 6 having an outer peripheral wall 6a which brings the lower end part of the double container 1 into contact with a mouth part peripheral wall 3d in an airtight manner and forms a ventilation path t leading to a through opening 3f between the mouth part peripheral wall 3d, and an outer cylindrical wall 6d in which an annular space K leading to the ventilation path t between the cylindrical wall 5a is formed; and a nozzle 8 which has a discharge port 8f and is energized upward by an elastic member 7 arranged between the base 6. The nozzle 8 has a seal part 8d for communicating the outside and the annular space K while forming a gap between the outer cylindrical wall 6d by the attachment of an over-cap 10, and non-communicating the internal space and the outside while contacting with an inward projection part 6f of the outer cylindrical wall 6d in the airtight manner by the detachment of the over-cap 10.

Description

  The present invention comprises a volume-reducible and deformable inner layer body that contains the contents, 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 produced as the contents are poured out. It relates to double containers for volume reduction.

  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 an opening for introducing outside air that leads to the inside and outside, and the volume of only the inner layer body is reduced as the contents are poured out ( A delamination container or a delamination container is also known (for example, Patent Document 1). This type of container can pour out the contents without replacing the contents in the inner layer with the outside air, and in particular, contains the contents that may be deteriorated by contact with the outside air. Suitable as a container.

  The delamination container of Patent Document 1 includes an outer layer having an air introduction hole and an inner layer that is releasably laminated on the outer layer, and normally prevents communication between the inner layer and the outer world and the inner layer. It is equipped with a discharge valve that allows the contents to be poured out by increasing the internal pressure of the air, and normally closes the air inflow hole communicating with the air introduction hole, and from the air inflow hole by reducing the pressure between the outer layer and the inner layer. A suction valve for introducing air is provided. According to such a container, when the outer layer is pressed, the inner layer can be pressed through the air between the outer layer and the inner layer, so that the inner pressure of the inner layer rises and the contents are poured out. can do. Also, if the outer layer is released, the outer layer and the inner layer are depressurized and the outside air is introduced through the air inflow holes as the outer layer is restored, so that only the outer layer is restored to its original shape. Can do.

Japanese Patent No. 3688373

  By the way, when such a double container is stored in a cold place, for example, if it is taken out indoors, the air between the inner layer body and the outer layer body is warmed and expanded by the outside air, and as a result, the internal pressure between them is increased. Rises, the inner layer body is pressurized, and the contents may spout from the spout.

  An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a new device capable of effectively preventing the ejection of contents even when the ambient temperature changes. A double container is proposed.

The present invention provides a volume-reducible and deformable inner layer body that accommodates contents, and an inner space that accommodates the inner layer body on the inside and has a through-opening in the peripheral wall of the mouth and is connected to the through-opening between the inner layer body A double container provided with an outer layer body, a pouring member having a pouring outlet for contents and attached to the outer layer body, and an overcap covering the pouring member,
The pouring member communicates with the through-opening between the inner plug having a cylindrical wall that communicates with the inner side of the inner layer body and the lower end portion of the inner plug in an airtight manner with the peripheral wall of the mouth. A base including an outer peripheral wall forming an air passage, and an outer cylindrical wall forming an annular space communicating with the air passage between the outer wall and the cylindrical wall; and having the spout and disposed between the base A nozzle that is biased upward by the elastic member
The nozzle causes the annular space and the outside world to communicate with each other by opening a gap with the outer cylindrical wall when the nozzle is pushed and displaced by the attachment of the overcap, while the nozzle protrudes by removing the overcap. A double container having a seal portion that hermetically abuts against the inwardly convex portion of the outer cylindrical wall when displaced to make the inner space and the outside non-communication.

  It is preferable that an engaged portion corresponding to an engaging portion formed on the inner surface of the peripheral wall of the overcap is provided on the outer surface of the outer cylindrical wall.

  A through-opening is provided in the peripheral wall of the mouth of the outer layer body. An outer peripheral wall that forms an air passage that leads to the through-opening with the peripheral wall of the mouth, and an outer cylindrical wall that forms an annular space that communicates with the air passage between the tubular wall and the contents A nozzle having a spout and urged upward by an elastic member disposed between the base and the base, and a gap between the nozzle and the outer cylindrical wall when the nozzle is displaced by mounting an overcap. The annular space is communicated with the outside world by opening the nozzle, and when the nozzle is displaced due to the removal of the overcap, the outer layer body and the inner layer body are in contact with each other by airtightly contacting the inward convex portion of the outer cylindrical wall. ) And outside It is provided with the seal portion of the door in a non-communicating, in a state of attaching the overcap, a state where the internal space and the outside are communicated. As a result, even if the ambient temperature changes, the air in the internal space can be released to the outside world, so that the ejection of the contents can be prevented.

  Although it is possible to use the outer peripheral wall of the base to hold the overcap, an engaged portion corresponding to the engaging portion formed on the inner surface of the outer wall of the overcap is provided on the outer surface of the outer cylindrical wall. In this case, since the size of the overcap can be reduced, the amount of resin can be reduced.

It is a half sectional view in a side view showing a first embodiment of a double container according to the present invention. FIG. 2 is a half sectional view in a side view showing a state where an overcap is removed from the state of FIG. It is a figure which shows the principal part of FIG.1 and FIG.2, and is the state which attached the overcap on the left side with the central axis line of a double container as a boundary, and the state which removed the overcap on the right side. It is a figure which shows 2nd embodiment of the double container according to this invention according to FIG. It is a figure which shows 3rd embodiment of the double container according to this invention according to FIG. It is a figure which shows 4th embodiment of the double container according to this invention according to FIG.

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

  In FIG. 1, the code | symbol 1 shows 1st embodiment of the double container of this invention. The double container 1 of the present embodiment is particularly suitable for dispensing a small amount of contents. The double container 1 includes an inner layer body 2 that contains the contents, an outer layer body 3 that houses the inner layer body 2 inside, and a pouring member 4 that is attached to the outer layer body 3. The dispensing member 4 includes an inner plug 5, a base 6, an elastic member 7, and a nozzle 8. Further, the inner plug 5 is provided with a spherical body 9 that constitutes a content dispensing valve. An overcap 10 is provided outside the pouring member 4.

  The inner layer body 2 is provided with a storage space S for storing contents inside thereof. The inner layer body 2 is made of a thin synthetic resin, and can be reduced in volume.

  The outer layer body 3 has a two-stage structure in which the lower portion has a large diameter and the upper portion has a small diameter via a shoulder portion 3c having a diameter reduced upward while connecting a cylindrical body portion 3b to a disk-shaped bottom portion 3a. A cylindrical mouth peripheral wall 3d is connected. An upper opening 3e that opens upward is provided in the mouth peripheral wall 3d. A through opening 3f is provided on the base side of the mouth peripheral wall 3d, and a claw portion 3g is provided on the tip side. The outer layer body 3 is made of a synthetic resin, and the body portion 3b has reversible flexibility. The inner layer body 2 is housed inside the outer layer body 3, and the inner layer body 2 undergoes volume reduction deformation, whereby an internal space connected to the through opening 3f is formed between them.

  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.

  As shown in FIG. 3, the inner plug 5 includes a cylindrical wall 5a provided at the center, an upper wall 5b extending radially outward from the lower end of the cylindrical wall 5a and covering the upper opening 3e, And an annular wall 5c rising from the outer edge of the wall 5b. A hole 5d (single or plural) may be provided at a boundary portion between the upper wall 5b and the annular wall 5c. Further, a cylindrical seal wall 5e is provided on the lower surface of the upper wall 5b so as to sandwich the inner layer body 2 between the inner surface of the mouth peripheral wall 3d. In addition, an inclined wall 5f that decreases in diameter downward is provided on the inner surface of the cylindrical wall 5a.

  The base 6 has a cylindrical outer peripheral wall 6a surrounding the mouth peripheral wall 3d, a flat plate ring-shaped top wall 6b connected to the upper end of the outer peripheral wall 6a, and an annular wall 6c extending in the vertical direction from the inner edge of the top wall 6b. And. The annular wall 6c surrounds the cylindrical wall 5a, and a gap through which air passes is formed between them. The gap may extend over the entire inner surface of the annular wall 6c, or may be provided intermittently (provided with a circumferential interval between the cylindrical wall 5a and the annular wall 6c). It may be formed by a groove or a protrusion. In addition, an outer cylindrical wall 6d that surrounds the cylindrical wall 5a and forms an annular space K therebetween is provided on the top surface of the top wall 6b. A groove 6d1 is provided at the upper end of the outer cylindrical wall 6d. An engaged portion (male screw) 6e is provided on the outer surface of the outer cylindrical wall 6d, and an inward convex portion 6f is provided on the inner surface of the outer cylindrical wall 6d. Further, the inner surface of the outer peripheral wall 6a described above is provided with a protrusion 6g that engages with the claw portion 3g of the mouth peripheral wall 3d and prevents the base 6 from coming off. At least one of the claw portion 3g and the protrusion 6g is provided in an intermittent manner, and a gap through which air passes is formed. (In the present embodiment, an intermittent portion is provided in a portion of the claw portion 3g located above the through-opening 3f.) The lower end of the outer peripheral wall 6a has an enlarged diameter, and a mouth portion below the through-opening 3f. It is in airtight contact with the peripheral wall 3d. Thereby, between the opening peripheral wall 3d and the outer peripheral wall 6a, an air passage t is formed from the through opening 3f to the hole 5d through a gap between the claw portion 3g and the protrusion 6g. The air passage t communicates with the annular space K through a gap between the cylindrical wall 5a and the annular wall 6c.

  The elastic member 7 is in contact with the upper surface of the top wall 6b and is provided on the radially outer side of the annular wall 6c. In the present embodiment, a coil spring wound in a spiral shape is used. However, various types of springs that exert a repulsive force by pressing so as to shorten the length can be applied.

  The nozzle 8 includes an inner annular body 8a that is airtight and slidably in contact with the inner surface of the cylindrical wall 5a, and a disk-shaped top that is connected to the upper end of the inner annular body 8a and whose lower surface is in contact with the elastic member 7. A wall 8b and an outer annular body 8c extending along the inner surface of the outer cylindrical wall 6d are provided, and a lower end of the outer annular body 8c is provided with a seal portion 8d bulging outward in the radial direction. It has been. The nozzle 8 is movable in the vertical direction, and when moved downward, a gap is formed between the outer cylindrical wall 6d and the outer annular body 8c through which air from the annular space K passes. When moved upward, the seal portion 8d comes into contact with the inwardly protruding portion 6f of the outer cylindrical wall 6d to close the annular space K. In addition, a tapered portion 8e having a diameter decreasing upward and a content outlet 8f are provided at the center of the top wall 8b. A rib 8g is provided on the inner surface of the inner annular body 8a. The rib 8g functions as a stopper that prevents the spherical body 9 from coming off.

  The spherical body 9 is provided so as to be movable in the vertical direction within the cylindrical wall 5a. The spherical body 9 is separated from the inclined wall 5f by the pressurization of the accommodation space S accompanying the pressing to the outer layer body 3, and allows the outflow of the contents, while the pressurization is released to cancel the pressurization state of the storage space S. Then, the accommodation space S is closed in close contact with the inclined wall 5f. In addition, when using the spherical body 9 with comparatively heavy weight, the spherical body 9 can be separated from the inclined wall 5f also by making the outer layer body 3 into the inclined posture.

  The overcap 10 includes a cylindrical peripheral wall 10b that hangs down from the outer edge of the disk-shaped top surface wall 10a. A rib 10c is provided above the inner surface of the peripheral wall 10b, and an engaging portion (female screw) 10d corresponding to the male screw 6e is provided below. Further, a bulging portion 10e is provided on the lower surface of the top wall 10a.

  In the double container 1 configured as described above, when the overcap 10 is attached to the end as shown on the left side of FIG. 3, the rib 10c abuts against the top wall 8b, and the bulging portion 10e contacts the tapered portion 8e. The nozzle 8 moves downward (pushing displacement) after contact (the outlet 8f may be closed), and the annular space K is formed between the outer cylindrical wall 6d and the outer annular body 8c, outside. It communicates with the outside through a groove 6d1 provided at the upper end of the cylindrical wall 6d and a spiral passage formed between the male screw 6e and the female screw 10d. As a result, even if the ambient temperature changes and the air in the internal space expands, the air can be released to the outside, so that the contents can be prevented from being ejected.

  When the overcap 10 is removed as shown on the right side of FIG. 3, the nozzle 8 is moved upward by the urging force of the elastic member 7 (projecting displacement), and a seal portion is formed on the inward convex portion 6f of the outer cylindrical wall 6d. 8d abuts and the annular space K is closed to the outside. When the outer layer body 3 is pressed in this state, the air in the inner space does not escape toward the outside, so that the accommodation space S is pressurized and the contents pass through the gap between the inclined wall 5f and the spherical body 9. A small amount is poured out from the spout 8f. In this state, since the annular space K remains closed, the outer layer body 3 is not restored even if the outer layer body 3 is released from the pressure. However, since the content to be poured out is small, the outer layer body 3 is deformed. The amount is small and the usability and appearance are not impaired. Thereafter, if the overcap 10 is attached, the outer space 3 can be restored because the internal space communicates with the outside world as described above.

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

  The double container 11 of the present embodiment is configured by an inner plug 50, a nozzle 80, and a dispensing valve 90 instead of the inner plug 5, the nozzle 8, and the spherical body 9.

  The inner plug 50 includes a closing plate 50b provided with an outflow hole 50a through which the contents are passed on the inner surface of the cylindrical wall 5a. On the upper surface of the closing plate 50b, an inner taper 50c having a diameter decreasing upward is provided around the outflow hole 50a. Further, a projection 50d protruding from the inner surface of the cylindrical wall 5a is provided above the closing plate 50b.

  The nozzle 80 includes a top wall 80a having a central dome shape and a peripheral portion having a flat plate shape instead of the top wall 8b having the tapered portion 8e at the central portion.

  The dispensing valve 90 normally closes the outflow hole 50a, but opens the outflow hole 50a when the accommodation space S is pressurized. The dispensing valve 90 includes a movable plate 90a that covers the outflow hole 50a and contacts the upper surface of the internal taper 50c; And an elastic arm 90c that connects the movable plate 90a and the annular body 90b to each other and biases the movable plate 90a toward the upper surface of the internal taper 50c. The movable plate 90a of the present embodiment has a disc shape. Further, three elastic arms 90c are provided in a uniform arrangement, and in the present embodiment, a configuration such as a three-point valve is adopted, but other valve structures such as a one-point valve can also be adopted.

  In the double container 11 having such a configuration, the rib 10c and the bulging portion 10e abut against the top wall 80a when the overcap 10 is attached to the end as in the above-described embodiment, and the nozzle 80 is moved downward. Since the annular space K communicates with the outside world, the contents can be prevented from being ejected even if the ambient temperature changes and the air in the internal space expands.

  When the overcap 10 is removed, the nozzle 80 is moved upward by the urging force of the elastic member 7 (projecting displacement), and the seal portion 8d comes into contact with the inwardly protruding portion 6f of the outer cylindrical wall 6d, so that the annular space K is closed to the outside world. When the outer layer body 3 is pressed in this state, the accommodation space S is pressurized, the movable plate 90a is separated from the internal taper 50c, and a small amount of contents are poured out from the spout 8f.

  Next, a third embodiment of the double container according to the present invention will be described with reference to FIG. The double container 101 of the present embodiment is configured by an outer layer body 30, an inner plug 150, a base 60, and a dispensing valve 190 instead of the outer layer body 3, the inner plug 5, the base 6, and the spherical body 9 of the first embodiment. doing.

  The outer layer body 30 includes a male screw portion 30a on the outer peripheral surface of the mouth peripheral wall 3d instead of the claw portion 3g. A part of the male screw portion 30a is cut out by a groove portion 30b extending in the vertical direction.

  The inner plug 150 includes a vertical rib 150a on the inner surface of the cylindrical wall 5a. Moreover, the position of the inclined wall 5f is changed with respect to the inner plug 5, and it is made to extend from the lower end of the cylindrical wall 5a.

  The base 60 is provided with a female screw portion 60a corresponding to the male screw portion 30a in place of the protrusion 6g. Thereby, the base 60 is detachably held with respect to the outer layer body 3.

  The dispensing valve 190 is formed integrally, for example, and includes a plate 190a that is disposed on the vertical rib 150a and fitted and held on the inner surface of the cylindrical wall 5a. The plate 190a has an edge 190b formed in an annular shape, and the inside of the edge is a through hole. The lower surface of the plate 190a is provided with an elastic portion 190c (for example, composed of a plurality of spiral pieces) whose upper end is connected to the edge portion and extends in a spiral shape. Furthermore, the lower end of the elastic portion 190c is usually provided with an inclined portion 190d seated on the inclined wall 5f by the elastic portion 190c, and a protrusion 190e is provided at the lower end of the inclined portion 190d.

  In the double container 101 having such a configuration, when the overcap 10 is attached to the end, the rib 10c comes into contact with the top wall 8b, the bulging portion 10e comes into contact with the taper portion 8e, and the nozzle 8 faces downward. To move (push-in displacement). In this state, the annular space K communicates with the outside world, so that even if the ambient temperature changes and the air in the internal space expands, the contents can be prevented from being ejected. When the overcap 10 is removed, the nozzle 8 is moved upward by the urging force of the elastic member 7 (protrusion displacement), and the seal portion 8d comes into contact with the inward convex portion 6f of the outer cylindrical wall 6d, so that the annular space K is closed to the outside world. When the outer layer body 3 is pressed in this state, the accommodation space S is pressurized, the inclined portion 190d is separated from the inclined wall 5f, and a small amount of contents are poured out from the spout 8f.

  Next, a fourth embodiment of the double container according to the present invention will be described with reference to FIG. The double container 201 of this embodiment is provided with a pouring valve 290 instead of the pouring valve 190 of the third embodiment.

  The dispensing valve 290 includes a flat plate 290a having at least one groove 290b at the edge instead of the plate 190a. Moreover, it replaces with the elastic part 190c and is provided with the elastic part 290c formed of the some curved part. Accordingly, the inclined portion 190d is seated on the inclined wall 5f. Further, a groove 290d extending in the vertical direction is provided on the outer peripheral surface of the protrusion 190e. Note that the groove 290b may not be provided depending on the contents.

  The double container 201 having such a configuration can also connect the annular space K to the outside when the overcap 10 is attached to the end, and close the annular space K from the outside when the overcap 10 is removed. Therefore, it can be used in the same manner as the double container 101 described above.

  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, when attaching the overcap 10 to the base 6, it is possible to employ an undercut or the like in addition to the screws described above. In addition, when there is a restriction such as a space, it is possible to change the part to which the overcap 10 is attached from the outer cylindrical wall 6d to the outer peripheral wall 6a.

  ADVANTAGE OF THE INVENTION According to this invention, even if ambient temperature changes, it becomes possible to provide the novel double container which can prevent the ejection of the content effectively.

DESCRIPTION OF SYMBOLS 1 Double container 2 Inner layer body 3 Outer layer body 3a Bottom part 3b Trunk part 3c Shoulder part 3d Peripheral wall 3e Top opening 3f Through-opening 3g Claw part 4 Extraction member 5 Inner plug 5a Cylindrical wall 5b Upper wall 5c Annular wall 5d Hole 5e Seal wall 5f Inclined wall 6 Base 6a Outer peripheral wall 6b Top wall 6c Annular wall 6d Outer cylindrical wall 6d1 Groove 6e Male thread (engaged part)
6f Inward convex part 6g Protrusion 7 Elastic member 8 Nozzle 8a Inner annular body 8b Top wall 8c Outer annular body 8d Seal part 8e Taper part 8f Outlet 8g Rib 9 Spherical body 10 Overcap 10a Top wall 10b Peripheral wall 10c Rib 10d Engagement part)
10e bulging portion 11 double container 50 middle plug 50a outlet hole 50b closing plate 50c internal taper 50d convex portion 80 nozzle 80a top wall 90 pouring valve 90a movable plate 90b annular body 90c elastic arm K annular space S accommodating space t air passage

Claims (2)

A volume-reducing and deformable inner layer body that contains the contents, and an outer layer body that contains the inner layer body inside and has a through-opening in the peripheral wall of the mouth and an internal space connected to the through-opening between the inner layer body And a double container comprising a pouring member having a pouring outlet for contents and attached to the outer layer body, and an overcap covering the pouring member,
The pouring member communicates with the through-opening between the inner plug having a cylindrical wall that communicates with the inner side of the inner layer body and the lower end portion of the inner plug in an airtight manner with the peripheral wall of the mouth. A base including an outer peripheral wall forming an air passage, and an outer cylindrical wall forming an annular space communicating with the air passage between the outer wall and the cylindrical wall; and having the spout and disposed between the base A nozzle that is biased upward by the elastic member
The nozzle causes the annular space and the outside world to communicate with each other by opening a gap with the outer cylindrical wall when the nozzle is pushed and displaced by the attachment of the overcap, while the nozzle protrudes by removing the overcap. A double container having a seal portion that hermetically abuts against the inwardly convex portion of the outer cylindrical wall when displaced and makes the internal space and the outside non-communication.   The double container according to claim 1, wherein an engaged portion corresponding to an engaging portion formed on an inner surface of the peripheral wall of the overcap is provided on an outer surface of the outer cylindrical wall.

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