JP6315958B2 - Double container - Google Patents

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 has a volume-deformable inner layer body that accommodates contents, and an inner space that houses the inner layer body and that has a through-opening at the bottom and is connected to the through-opening between the inner layer body. A leg member that has an outer layer body, a nozzle that has a spout for contents, and a bottom wall that forms a bottom opening that communicates the through-opening with the outside, and a leg member that is attached to the outer layer body A double container comprising
The leg member suppresses the outflow of air in the inner space from the bottom opening when the outer layer body is pressed, and takes air into the inner space from the bottom opening when the outer layer body is restored, and presses the outer layer body. A valve mechanism for discharging the air in the internal space to the outside when the internal pressure of the internal space is increased without
The valve mechanism is supported by the resilient arm, a valve body seated on the bottom wall Rukoto biased in a direction to close the bottom opening by elastic arms, provided on the seating surface of the bottom wall, one end Is a double container comprising a narrow groove communicating with the bottom opening and having the other end opened outside the valve body.

The present invention has a volume-deformable inner layer body that accommodates contents, and an inner space that houses the inner layer body and that has a through-opening at the bottom and is connected to the through-opening between the inner layer body. A leg member that has an outer layer body, a nozzle that has a spout for contents, and a bottom wall that forms a bottom opening that communicates the through-opening with the outside, and a leg member that is attached to the outer layer body A double container comprising
The leg member suppresses the outflow of air in the inner space from the bottom opening when the outer layer body is pressed, and takes air into the inner space from the bottom opening when the outer layer body is restored, and presses the outer layer body. A valve mechanism for discharging the air in the internal space to the outside when the internal pressure of the internal space is increased without
The valve mechanism includes a valve body that is urged in a direction to close the bottom opening and is seated on the bottom wall; the valve body is inserted through the bottom opening and protrudes from the bottom wall; and the outer layer body is in a standing posture. It is a double container which consists of a projection which presses against the mounting surface when mounted and separates the valve body from the bottom wall.

  The bottom wall of the leg member attached to the outer layer body is provided with a bottom opening that allows the through opening provided at the bottom of the outer layer body to communicate with the outside world, and the leg member has an inner section from the bottom opening when the outer layer body is pressed. There is a valve mechanism that suppresses the outflow of air, takes air into the internal space from the bottom opening when the outer layer body is restored, and discharges air from the inner space to the outside when the internal pressure rises without pressing the outer layer body Therefore, even if the ambient temperature changes, the air in the internal space can be released to the outside world, and the contents can be prevented from being ejected.

  Such a valve mechanism includes a valve body that is urged in a direction to close the bottom opening and is seated on the bottom wall, a seat provided on the bottom wall, one end communicating with the bottom opening, and the other end of the valve body An outer layer body comprising a narrow groove that opens outward, a valve body that is urged in a direction to close the bottom opening and is seated on the bottom wall, and that projects from the bottom wall through the bottom opening through the valve body Since the structure is simplified, it is advantageously adapted to be configured by a protrusion that presses against the mounting surface when the valve is mounted in an upright posture and separates the valve body from the bottom wall.

FIG. 2 is a half sectional view in a side view showing an embodiment of a double container according to the present invention. It is a figure which expands and shows the nozzle periphery and leg member periphery of FIG. It is a figure corresponding to Drawing 2 showing other embodiments of a double container according to the present invention, (a) is in the state where a double container was lifted from a mounting surface, and (b) is on a mounting surface. It is in a state of being placed.

  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 where the nozzle 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 one 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 nozzle 4 that is attached to the outer layer body 3. The nozzle 4 is composed of an inner plug 5 and a dispensing cylinder 7. Further, a seal valve 6 is provided between the inner plug 5 and the dispensing cylinder 7. A leg member 8 is provided at the bottom of the outer layer body 3, and an air suction valve 9 is provided inside the leg member 8. An overcap 10 is provided outside the nozzle 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 is connected to a disc-shaped bottom portion 3a with a barrel portion 3b having a two-stage cylindrical shape with a small diameter at the lower portion and a large diameter at the upper portion, and a shoulder portion 3c whose diameter is reduced upward. A cylindrical mouth peripheral wall 3d is connected to each other. An upper opening 3e that opens upward is provided in the mouth peripheral wall 3d, and a male screw 3f is provided on the outer surface thereof. Further, a recess 3g for holding the leg member 8 is provided in the small diameter portion of the body portion 3b, and a through opening 3h is provided in the bottom portion 3a. The inner layer body 2 is housed inside the outer layer body 3, and the inner layer body 2 undergoes volumetric deformation so that an internal space connected to the through opening 3h is formed between them.

  In this embodiment, the inner layer body 2 and the outer layer body 3 are obtained by laminating synthetic resins having low compatibility with each other so as to be peelable, and blow molding a parison formed by laminating these synthetic resin materials. It was obtained by. The through-opening 3h has a bottom crack shape formed by applying a pressing force from the outside to the joint (bottom seal portion) between the inner layer body 2 and the outer layer body 3 formed in the bottom portion 3a during blow molding. The gap is formed. The through-opening 3h is not limited to the one using such a seam, and may be provided by perforating the outer layer body 3 after molding. The formed preform 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. 2, the inner plug 5 has an upper wall 5b having an opening 5a at the center, a cylindrical wall 5d connected to the upper wall 5b via a step 5c, and a lower end of the cylindrical wall 5d. An inner plug flange 5e that sandwiches the inner layer body 2 between the upper end of the peripheral wall 3d and a cylindrical sealing wall that is suspended from the lower surface of the inner plug flange 5e and sandwiches the inner layer body 2 between the inner surface of the mouth peripheral wall 3d 5f. Further, the outer surface of the cylindrical wall 5d is provided with a convex portion 5g (which may be annular or intermittent) that is convex outward in the radial direction.

  The seal valve 6 includes a plate-shaped movable wall 6a that covers the opening 5a and contacts the upper wall 5b, a columnar rod-shaped portion 6b that stands up from the movable wall 6a, and a tip of the rod-shaped portion 6b bulges radially outward. A bulging portion 6c is provided. Further, an annular portion 6d whose lower end abuts on the stepped portion 5c is provided on the radially outer side of the movable wall 6a. The movable wall 6a is connected to the upper wall 5b between the movable wall 6a and the annular portion 6d. An elastic arm 6e that urges toward is provided. The seal valve 6 of the present embodiment has a configuration like a three-point valve in which three elastic arms 6e are arranged in an equal arrangement, but other valve structures such as a one-point valve can also be adopted.

  The dispensing cylinder 7 has a spout 7a at the center and a tapered portion 7b that expands downward, a tubular portion 7c that is coupled to the lower end of the tapered portion 7b, and a lower end of the tubular portion 7c. And a flange 7d in contact with the upper surface of the inner plug flange 5e. Further, the inner surface of the cylindrical portion 7c is provided with a concave portion 7e that has a shape corresponding to the convex portion 5g of the inner plug 5 and that engages with the convex portion 5g to prevent the extraction cylindrical body 7 from coming off. Further, on the inner surface of the cylindrical portion 7c, the boundary portion between the tapered portion 7b and the cylindrical portion 7c is in contact with the upper end of the annular portion 6d and cooperates with the inner plug 5 to position the seal valve 6 in the vertical direction. A restricting protrusion 7f is provided. Moreover, the bulging part 6c is penetrated by the spout 7a, and the seal step part 7g provided in the peripheral surface of the spout 7a contact | abuts with the bulging part 6c. A pouring space T is formed inside the pouring cylinder 7 and communicates with the accommodation space S through the opening 5a when the movable wall 6a is separated from the upper wall 5b.

  As shown in FIG. 1, the leg member 8 has a disk-shaped bottom wall 8a, a bottom opening 8b penetrating the center of the bottom wall 8a, and a large diameter of the trunk 3b while standing from the edge of the bottom wall 8a. A cylindrical peripheral wall 8c connected to the outer surface of the portion is provided. A claw portion 8d that engages with the recess 3g of the outer layer body 3 is provided above the inner surface of the peripheral wall 8c. As shown in FIG. 2, a narrow groove 8e having a small width and depth is provided on the upper surface of the bottom wall 8a. Here, one end (radial inner end) of the narrow groove 8e communicates with the bottom opening 8b, and the other end (radial outer end) extends radially outward from a valve body of the suction valve 9 described later. ing.

  The suction valve 9 covers the bottom opening 8b and is in contact with the upper surface (sitting surface) of the bottom wall 8a, and surrounds the movable plate 9a with a gap and is fitted on the inner surface of the peripheral wall 8c. An annular body 9b to be held together, and an elastic arm (not shown) for connecting the movable plate 9a and the annular body 9b to each other and biasing the movable plate 9a toward the bottom wall 8a are provided. The movable plate 9a of the present embodiment has a disc shape. Further, three elastic arms are provided in a uniform arrangement, and in this 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.

  The overcap 10 is formed by connecting a hemispherical top portion 10a to a peripheral wall 10b having a two-stage cylindrical shape with an upper portion having a small diameter and a lower portion having a large diameter. A female screw 10c that engages with the male screw 3f is provided on the inner surface of the peripheral wall 10b. In addition, an annular rib 10d that comes into contact with the bulging portion 6c when the overcap 10 is attached is provided on the lower surface of the top portion 10a.

  In the double container 1 configured as described above, the contents of the storage space S are first transferred to the extraction space T. First, the overcap 10 is removed and the outer layer body 3 is pressed. The narrow groove 8e extends to the outside of the movable plate 9a. However, the narrow groove 8e functions like a throttle, and the amount of air flowing out from the narrow groove 8e is small. For this reason, the internal pressure of the internal space formed between the inner layer body 2 and the outer layer body 3 rises, and the accommodation space S is pressurized. Thereby, the movable wall 6a is separated from the upper wall 5b, and the contents in the accommodation space S are fed into the extraction space T through the opening 5a and the gap around the elastic arm 6e. On the other hand, if the pressing of the outer layer body 3 is released, the inner space is decompressed as the outer layer body 3 is restored, the movable plate 9a is separated from the bottom wall 8a, and air from the outside is introduced into the inner space. And the contents can be moved to the extraction space T by repeatedly pressing and restoring the outer layer body 3.

  If the outer layer body 3 is pressed in a state where the contents are transferred to the pouring space T, the movable wall 6a is separated from the upper wall 5b and the bulging portion 6c is also sealed with the sealing step 7g as the accommodating space S is pressurized. As a result, the contents in the extraction space T are poured out through a gap between the rod-like portion 6b and the outlet 7a.

  Further, even if the ambient temperature changes and the internal pressure in the internal space rises, air can be slightly discharged from the narrow groove 8e, so that the pressurization of the inner layer body 2 is suppressed and the ejection of contents is prevented. can do.

  In the present embodiment, even when the internal pressure rises in the internal space without pressing the outer layer body 3 such that the ambient temperature changes by the leg member 8 having the narrow groove 8e and the suction valve 9, the air in the internal space is changed. Although the valve mechanism which can discharge | emit to the external field was comprised, such a valve mechanism can be obtained also by another structure. This point will be described with reference to FIG.

  FIGS. 3A and 3B are views showing another embodiment of the double container according to the present invention. In addition, about the site | part which is common in embodiment mentioned above, the same code | symbol is attached | subjected to drawing and description is abbreviate | omitted.

  Although the illustration of the double container 11 of this embodiment is omitted, the configuration of the upper portion such as the nozzle 4 is the same as that of the above-described embodiment. Further, the leg member 8 and the suction valve 9 are configured in place of the leg member 80 and the suction valve 90.

  As shown in FIG. 3A, the leg member 80 is provided with an annular rib 8f surrounding the bottom opening 8b on the upper surface of the bottom wall 8a, and the narrow groove 8e is omitted. Moreover, the convex part 8g is provided in the inner surface of the surrounding wall 8c.

  Further, the suction valve 90 covers the bottom opening 8b and contacts the upper surface of the annular rib 8f with a valve body (movable plate) 90a, and surrounds the movable plate 90a with a gap and is prevented from coming out by the convex portion 8g. An annular body 90b and an elastic arm 90c that connects the movable plate 90a and the annular body 90b to each other and urges the movable plate 90a toward the annular rib 8f are provided. The movable plate 9a of the present embodiment has a disc shape. Three elastic arms 90c are provided in an equal arrangement. Further, a projection 90d that protrudes from the lower surface of the bottom wall 8a through the bottom opening 8b is provided on the lower surface of the movable plate 90a.

  When the double container 11 having such a configuration is lifted (the leg member 80 is separated from the placement surface), the movable plate 90a contacts the annular rib 8f as shown in FIG. Although placed in contact with the placement surface in a standing posture with the spout facing upward, the tip of the protrusion 90d is pressed against the placement surface, and the movable plate 90a is separated from the annular rib 8f. Can be made. For this reason, if the double container 11 is placed on the mounting surface, air can be discharged from the bottom opening 8b to the outside world even if the ambient temperature changes and the internal pressure of the internal space increases. On the other hand, when the double container 11 is lifted to pour out the contents, the bottom opening 8b is closed as shown in FIG. The contents can be poured out. If the pressure is released, the internal space is decompressed as the outer layer body 3 is restored, and the movable plate 90a is separated from the annular rib 8f, so that air from the outside can be introduced into the internal space.

  The double container according to the present invention is not limited to the present embodiment, and various modifications are possible within the scope according to the claims. For example, the width, depth, number, and the like of the narrow grooves 8e can be appropriately changed depending on the viscosity of the contents, the restoring force of the outer layer body 3, and the like.

  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 Body part 3c Shoulder part 3d Opening peripheral wall 3e Top opening 3f Male screw 3g Recess 3h Through-opening 4 Nozzle 5 Middle plug 5a Opening 5b Upper wall 5c Step part 5d Cylindrical wall 5e Inner plug flange 5f Seal wall 5g Protruding part 6 Seal valve 6a Movable wall 6b Rod-like part 6c Swelling part 6d Annular part 6e Elastic arm 7 Extraction cylinder 7a Outlet 7b Taper part 7c Cylindrical part 7d Flange 7e Concave 7f Protrusion 7g Seal step 8 Leg member 8a Bottom wall 8b Bottom opening 8c Peripheral wall 8d Claw part 8e Narrow groove 8f Annular rib 8g Protrusion 9 Suction valve 9a Movable plate (valve)
9b annular body 10 overcap 10a top part 10b peripheral wall 10c female thread 10d rib 11 double container 80 leg member 90 suction valve 90a movable plate (valve body)
90b annular body 90c elastic arm 90d protrusion S accommodation space T extraction space

Claims (2)

A volume-reducible 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 at the bottom and an internal space connected to the through-opening between the inner layer body, A nozzle having a spout for contents and attached to the outer layer body, and a leg member having a bottom wall formed with a bottom opening for communicating the through-opening with the outside, and attached to the outer layer body. A heavy container,
The leg member suppresses the outflow of air in the inner space from the bottom opening when the outer layer body is pressed, and takes air into the inner space from the bottom opening when the outer layer body is restored, and presses the outer layer body. A valve mechanism for discharging the air in the internal space to the outside when the internal pressure of the internal space is increased without
The valve mechanism is supported by the resilient arm, a valve body seated on the bottom wall Rukoto biased in a direction to close the bottom opening by elastic arms, provided on the seating surface of the bottom wall, one end A double container comprising a narrow groove that communicates with the bottom opening and has the other end opened outside the valve body. A volume-reducible 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 at the bottom and an internal space connected to the through-opening between the inner layer body, A nozzle having a spout for contents and attached to the outer layer body, and a leg member having a bottom wall formed with a bottom opening for communicating the through-opening with the outside, and attached to the outer layer body. A heavy container,
The leg member suppresses the outflow of air in the inner space from the bottom opening when the outer layer body is pressed, and takes air into the inner space from the bottom opening when the outer layer body is restored, and presses the outer layer body. A valve mechanism for discharging the air in the internal space to the outside when the internal pressure of the internal space is increased without
The valve mechanism includes a valve body that is urged in a direction to close the bottom opening and is seated on the bottom wall; the valve body is inserted through the bottom opening and protrudes from the bottom wall; and the outer layer body is in a standing posture. A double container comprising a protrusion that presses against a mounting surface when mounted and separates the valve body from the bottom wall.

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