JP2015105123A - Double container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double container capable of preventing contents from spouting out even when an ambient temperature changes.SOLUTION: A double container 1 includes: a ventilation path V to the outside which is formed between the outer surface of a mouth peripheral wall 3d of an outer layer body 3 and a peripheral wall 9b of an over-cap 9; a slide member 8 which communicates an internal space between an inner layer body 2 and the outer layer body 3 with the ventilation path V by sliding it to a mouth root side to open a penetration opening 3f, and also which closes the penetration opening 3f by sliding it to a mouth tip side; and an upper projection 9d for pushing down the slide member 8 to the mouth root side by attaching the over-cap 9 and a lower projection 9e for pushing up the slide member 8 to the mouth tip side by removing the over-cap 9, which are provided on the inner surface of the peripheral wall 9b of the over-cap 9.

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 comprising: an outer layer body having a nozzle for attaching to the outer layer body; and an overcap that covers the nozzle and is detachably attached to the peripheral wall of the mouth. ,
On the outer surface of the peripheral wall of the mouth portion, an air passage to the outside is formed with the peripheral wall of the overcap, and the through-opening is opened by sliding toward the base of the mouth portion, thereby the internal space and the air passage. And a slide member that closes the through-opening by sliding toward the mouth end,
Provided on the inner surface of the peripheral wall of the overcap are an upper projection that pushes down the slide member toward the base of the mouth by attaching the overcap, and a lower projection that pushes up the slide member toward the tip of the mouth by removing the overcap It is a double container.

  The slide member protrudes toward the through-opening and abuts the lower edge of the through-opening by sliding toward the mouth base, while the upper edge of the through-opening by sliding toward the tip end of the mouth It is preferable to have a stopper projection that abuts against.

  It is preferable that the slide member has a C shape by partially circling the mouth peripheral wall and includes the air passage between two peripheral end portions.

  A vent passage to the outside is formed between the outer peripheral wall of the outer layer body and the peripheral wall of the overcap, and a through opening is opened by sliding toward the base of the mouth to establish a connection between the outer layer body and the inner layer body. A slide member that closes the through-opening by sliding toward the tip of the mouth is provided, and the slide member is opened to the inner surface of the peripheral wall of the overcap by attaching the overcap. The upper projection that pushes down to the base side and the lower projection that pushes the slide member toward the tip of the mouth by removing the overcap are provided, so that the internal space and the outside world are in communication with the overcap attached. . 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.

  A stopper that protrudes toward the through-opening on the slide member and contacts the lower edge of the through-opening by sliding toward the base of the mouth, while contacting the upper edge of the through-opening by sliding to the tip of the mouth In the case where the protrusion is provided, the slide member does not fall off from the outer layer body, which improves usability.

  In the case where the slide member is formed in a C shape by partially circling the mouth peripheral wall, the slide member can be deformed so that the inner diameter of the slide member is widened, so that the attachment to the mouth peripheral wall becomes easy. . Moreover, since it can use as a ventilation path between two peripheral edge parts used as the part notched in the circumferential direction by making it C-shape, the groove | channel etc. for forming a ventilation path are provided separately. There is no need.

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 of FIG. It is sectional drawing which follows AA of FIG. It is a figure which shows the state in the middle of removing an overcap.

  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 slide member 8 is provided on the outer side of the peripheral wall of the outer layer body 3. An overcap 9 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 formed by connecting a cylindrical body portion 3b to a disc-shaped bottom portion 3a and connecting a cylindrical mouth peripheral wall 3d via a shoulder portion 3c whose diameter is reduced upward. 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 male screw 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. 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.

  The slide member 8 is provided to be slidable in the direction along the central axis M of the outer layer body 3 with respect to the mouth peripheral wall 3d. As shown in FIG. 1, the slide member 8 has a form in which a thin portion 8a positioned below and a thick portion 8b positioned above are connected in a side view, and is viewed in plan view as shown in FIG. Then, the mouth peripheral wall 3d is partially circulated to form a C shape. Here, the gap between the two peripheral end portions 8c and 8d shown in FIG. 3 functions as a ventilation path V that allows the through opening 3f to communicate with the outside world when the overcap 9 is attached. Further, a projection (stopper projection 8e) that protrudes toward the through opening 3f is provided on the inner surface of the slide member 8.

  The overcap 9 is formed by connecting a hemispherical top portion 9a with a peripheral wall 9b 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 9c that engages with the male screw 3g is provided on the inner surface of the peripheral wall 9b. Below the female screw 9c, there is an upper protrusion 9d that has a right angle in a sectional view, and the amount of protrusion from the inner surface of the peripheral wall 9b is the upper protrusion 9d. There are provided lower projections 9e that are semicircular in sectional view. Note that the upper protrusion 9d is not limited to the step formed so that the entire surface protrudes as in the present embodiment, but includes the protrusion formed so that a part of the surface protrudes locally. . Further, the lower protrusion 9e is not limited to a protrusion formed so that a part of the surface locally protrudes as in the present embodiment, but includes a step formed so that the entire surface protrudes. Further, an annular rib 9f is provided on the lower surface of the top portion 9a so as to come into contact with the bulging portion 6c when the overcap 9 is attached.

  In the double container 1 configured as described above, when the overcap 9 is attached to the end as shown in FIG. 2, the upper protrusion 9d pushes down the thick portion 8b, so that the slide member 8 moves toward the mouth base side. To do. As a result, the through opening 3f is opened, so that the internal space formed between the inner layer body 2 and the outer layer body 3 communicates with the outside through the through opening 3f and the air passage V (FIG. 3). 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. In this state, the stopper projection 8e is in contact with the lower edge of the through opening 3f, so that the slide member 8 can be positioned in the vertical direction by the upper projection 9d and the stopper projection 8e. Further, since the bulging portion 6c is held so as not to be tilted by the rib 9f of the overcap 9 (no vibration with respect to the central axis M), the bulging portion 6c and the seal step portion 7g are evenly distributed over the entire circumference. It can be made to contact. Thereby, the penetration | invasion of the air into the extraction space T and the leakage of the content liquid from the extraction space T can be prevented more reliably.

  Then, when the removal of the overcap 9 is started as shown in FIG. 4, the lower protrusion 9e pushes up the thick portion 8b, so that the slide member 8 moves to the mouth tip side. In addition, since the protrusion amount of the lower protrusion 9e is small and is semicircular in sectional view, the lower protrusion 9e can get over the slide member 8 if the overcap 9 is continuously removed. At this time, since the stopper projection 8e contacts the upper edge of the through opening 3f, the slide member 8 is not detached together with the overcap 9. Since the inner diameter of the slide member 8 is substantially the same as or slightly smaller than the outer diameter of the mouth peripheral wall 3d, the slide member 8 does not fall by its own weight even when the overcap 9 is removed, as shown in FIG. It is held at a position where the through opening 3f is closed.

  When the outer layer body 3 is pressed from the state shown in FIG. 4, the accommodation space S is pressurized through the air in the internal space. As a result, the movable wall 6a is separated from the upper wall 5b and the bulging portion 6c is also separated from the seal step portion 7g. As a result, the contents in the extraction space T are poured out through the gap between the rod-like portion 6b and the outlet 7a. It is. In this state, since the through-opening 3f remains closed, the outer layer body 3 is not restored even if the outer layer body 3 is released, but the outer layer body 3 has a small amount to be poured out. After that, if the overcap 9 is attached, the inner space communicates with the outside world as described above, so that the outer layer body 3 can be restored.

  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 slide member 8 of the present embodiment has a C-shape in plan view, but may be annular, for example. In this case, the periphery of the male screw 3g of the mouth peripheral wall 3d remains as shown, the periphery of the through-opening 3f has a large diameter, and the slide member also has a large diameter, so that the male screw interferes when the slide member is attached to the mouth peripheral wall. Never become. Further, a groove may be provided on the outer surface of the slide member 8 or the inner surface of the overcap 9, and this groove may be used as the air passage V. In addition, when attaching the overcap 9 to the peripheral wall of the mouth, undercuts or the like can be employed in addition to the above-described screws.

  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 Opening peripheral wall 3e Top opening 3f Through-opening 3g Male screw 4 Nozzle 5 Middle plug 5a Opening 5b Upper wall 5c Step part 5d Cylindrical wall flange 5e 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 part 7f Projection 7g Seal step part 8 Slide member 8a Thin part 8b Thick part 8c Peripheral end part 8d Peripheral end part 8e Stopper projection 9 Over cap 9a Top part 9b Peripheral wall 9c Female thread 9d Upper projection 9e Lower projection 9f Rib M Center axis S of outer layer body S Note space T Note Out space V Ventilation path

Claims (3)

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 nozzle that has a spout for contents and is attached to the outer layer body, and an overcap that covers the nozzle and is detachably attached to the peripheral wall of the mouth,
On the outer surface of the peripheral wall of the mouth portion, an air passage to the outside is formed with the peripheral wall of the overcap, and the through-opening is opened by sliding toward the base of the mouth portion, thereby the internal space and the air passage. And a slide member that closes the through-opening by sliding toward the mouth end,
Provided on the inner surface of the peripheral wall of the overcap are an upper projection that pushes down the slide member toward the base of the mouth by attaching the overcap, and a lower projection that pushes up the slide member toward the tip of the mouth by removing the overcap Double container.   The slide member protrudes toward the through-opening and abuts the lower edge of the through-opening by sliding toward the mouth base, while the upper edge of the through-opening by sliding toward the tip end of the mouth The double container according to claim 1, further comprising a stopper protrusion that abuts against the container.   3. The double container according to claim 1, wherein the slide member partially circulates around the peripheral wall of the mouth to form a C shape and includes the air passage between two peripheral ends.

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