JP6125887B2 - Double container - Google Patents

Description

  The present invention includes a double container that includes an outer layer body that forms an outer shell of a container, and a volume-reducing and deformable inner layer body that is housed inside the outer layer body, and reduces only the inner layer body as the contents are discharged. It is about.

  As a container for storing cosmetics such as lotion, shampoo, rinse, liquid soap, food seasoning, etc., the outer layer body that forms the outer shell of the container and the volume-reducing deformation that can be stored inside the outer layer body are freely deformable. A double container (also called a delamination container) that has an inner layer body and has an opening for introducing outside air that leads to the inside and outside of the outer layer body so that only the inner layer body is reduced as the contents are discharged is known. It has been.

  In addition, as a discharge method of the contents, there is a method using a pump attached to the mouth portion of the outer layer body and a method by squeezing the body portion of the outer layer body, but when the viscosity of the contents is relatively low, By placing the container in an inclined or inverted posture, it is possible to discharge the container by its own weight. Here, in Patent Document 1, a spherical body (ball valve) that moves under its own weight in accordance with a change in the posture of the container is provided in the spout attached to the mouth of the container, and when the container is in a standing posture, While the spherical body is seated on the inclined wall of the spout plug, the outside air is prevented from entering the content storage space, while the spherical body is placed from the sloping wall of the spout plug by tilting or upside down. A double container is shown that can be moved and discharged by its own weight.

JP 2011-73770 A

  By the way, when the container is returned to the standing posture after discharging the contents, as shown in FIG. 4A, a puddle is formed in the lower part of the spherical body due to the surface tension. This prevents the area around the sloping wall where the person sits from drying out. However, when the container is moved or vibration is applied to the container and a light impact is applied to the liquid pool, a part or all of the accumulated liquid may fall as shown in FIG. When time elapses under such circumstances, the contents attached to the spherical body and the inclined wall are exposed to the air and dry, resulting in hindrance to the movement of the spherical body and poor sealing performance at the contact surface. There is a risk of becoming. For this reason, the improvement which can hold | maintain a puddle reliably is calculated | required.

  An object of the present invention is to solve such a conventional problem, and the object of the present invention is to reliably hold a liquid pool formed around the spherical body. The present invention proposes a new double container capable of effectively preventing discharge failure caused by drying of the spherical body and the peripheral portion on which the spherical body is seated.

The present invention provides an outer layer body that forms an outer shell of a container, an inner layer body that has an upper opening that communicates with a content storage space and is accommodated inside the outer layer body, and a through hole that connects to the storage space. An inner plug having a bottom wall that closes the upper opening, leaving a hole, and having a peripheral wall surrounding the through hole in the bottom wall, and a flow path for contents inside the peripheral wall connected to the peripheral wall. A spout provided with a outlet tube and attached to the mouth of the outer layer body, a spherical body that moves in the flow path according to a change in posture of the outer layer body, and closes and opens the through hole, A double container comprising:
The inner plug has a cylindrical wall that rises from the edge of the through hole and has a seating portion that contacts the spherical body at the tip thereof and that defines a concave space that is open upward from the peripheral wall. It is a container.

  The seating portion is preferably an inclined surface that decreases in diameter toward the accommodation space.

  The lid has a top wall that covers the pouring tube and is detachably held by the pouring tap, and the top wall is inserted into the pouring tube in a closed posture of the lid, and It is preferable to provide a stopper that suppresses the movement of the spherical body.

  The double container according to the present invention includes a bottom wall that closes the upper opening of the inner layer body while leaving a through hole connected to the content storage space, and an inner plug provided with a peripheral wall surrounding the through hole on the bottom wall. Further, the inner plug has a cylindrical wall that has a seat portion that stands up from the edge of the through-hole and contacts the spherical body at the tip, and that defines a concave space that is open upward from the peripheral wall. As a result, the contents can be reliably stored in the recess space, thereby preventing the spherical body and the seating portion from drying.

  When the seating portion is an inclined surface that decreases in diameter toward the accommodation space, the spherical body can be reliably guided toward a predetermined position where the through hole is closed, so that the sealing function of the spherical body is stable. Is demonstrated.

  Provided with a top wall that covers the dispensing tube and is detachably held by the dispensing tap, and is further inserted into the dispensing tube in the closed position of the lid to suppress the movement of the spherical body. In the case where the stopper is provided, even when vibration is applied to the container, the spherical body is hardly separated from the seating portion, so that a problem that the spherical body and the seating portion are unintentionally dried can be effectively prevented.

(A) is sectional drawing of the principal part, (b) is sectional drawing in alignment with AA shown to (a) (the spherical body is abbreviate | omitted) about one Embodiment of the double container according to this invention. ). It is a figure which shows the condition which inclines the double container shown in FIG. 1, and discharges the contents. It is a principal part expanded sectional view which shows the condition where the content collected in the recessed part space after discharging the content. FIG. 5A is an explanatory diagram of a normal state showing a liquid pool formed in a conventional container, and FIG. 5B is an explanatory diagram of a state in which a part of the accumulated liquid has dropped.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a cross-sectional view of an essential part of an embodiment of a double container according to the present invention, and (b) is a cross-sectional view along AA shown in (a). FIG. 2 is a diagram showing a situation where the double container shown in FIG. 1 is tilted and the contents are discharged, and FIG. 3 shows a situation where the contents are accumulated in the recessed space after the contents are discharged. It is a principal part expanded sectional view.

  In Fig.1 (a), the code | symbol 1 shows one Embodiment of the double container of this invention. The double container 1 includes an outer layer body 10 that forms an outer shell of the container, and an inner layer body 20 that is housed inside the outer layer body 10, and an inner plug 30, a dispensing plug 40, and a lid body on the upper part. 50. Further, a spherical body B that moves under its own weight according to a change in the posture of the outer layer body 10 is provided between the inner plug 30 and the pouring plug 40. The double container 1 in this embodiment is formed by laminating an outer layer body 10 made of a synthetic resin and an inner layer body 20 formed of a synthetic resin having low compatibility with the outer layer body 10. It is obtained by blow molding a parison formed by laminating synthetic resin materials. Although not shown in the drawings, in the present embodiment, a single piece that extends in the vertical direction and partially joins the outer layer body 10 and the inner layer body 20 between the outer layer body 10 and the inner layer body 20. An adhesive band is provided. Note that the adhesive band is provided as necessary, and a plurality of adhesive bands may be provided without being provided.

  The outer layer body 10 has reversible flexibility. The outer layer body 10 has a trunk portion 12 connected to a cylindrical mouth portion 11 and a bottom portion (not shown) connected to the trunk portion 12. A male screw portion 13 is provided on the outer peripheral surface of the mouth portion 11. In addition, although illustration is abbreviate | omitted, the outer-layer body 10 is formed with the outside air introduction hole which penetrates the inside and outside. The outside air introduction hole may use a slit of a pinch-off portion formed at the bottom by blow molding, or may be provided by post-processing in the mouth portion 11 or the body portion 12 after blow molding.

  The inner layer body 20 forms an accommodation space S that can be filled with contents inside, and has an upper opening 21 that communicates with the accommodation space S. The inner layer body 20 is reduced in volume by being peeled off from the laminated outer layer body 10. Can be deformed.

  The inner plug 30 is provided in the upper opening 21 of the inner layer body 20 and has a bottom wall 32 that closes the upper opening 21 leaving a through hole 31 connected to the accommodation space S. As shown in FIG. 1A, the bottom wall 32 of the present embodiment is formed by connecting an annular intermediate wall 32b extending in the vertical direction to an edge of the central bottom wall 32a extending in the horizontal direction. An outer edge wall 32c extending outward in the horizontal direction is connected to the upper portion of 32b. The outer edge wall 32c includes an annular seal wall 33 that sandwiches the inner layer body 20 and contacts the outer layer body 10 on the lower surface thereof, and includes an annular wall 34 on the upper surface thereof. The bottom wall 32 includes a peripheral wall 35 that surrounds the through hole 31 and stands upward from the central bottom wall 32a in the present embodiment. Further, the central bottom wall 32 a includes a cylindrical wall 36 that rises upward from the edge of the through hole 31. At the tip of the cylindrical wall 36, an inclined surface 36 a that is reduced in diameter toward the accommodation space S is provided as a seating portion that contacts the spherical body B. An upwardly open recessed space 37 is defined between the cylindrical wall 36 and the peripheral wall 35. In the present embodiment, the longitudinal ribs 38 are provided on the inner surface of the peripheral wall 35 so as to be spaced apart in the circumferential direction (here, a total of three at regular intervals as shown in FIG. 1B). The recessed space 37 is divided into three at equal intervals. In addition, the shape and formation range of the recessed space 37 are not limited to the illustrated example shown in the present embodiment. For example, the number of the vertical ribs 38 may be changed to change the number of divisions, or the vertical ribs 38 may be changed. You may make it continue in the circumferential direction without dividing by. Further, at the tip of the vertical rib 38, a convex portion 38a that protrudes inward in the radial direction is provided.

  The spout 40 is provided with a spout cylinder 41 that is connected to the peripheral wall 35 and has a lip formed by curving the upper end radially outward while expanding the diameter upward. A flow path R through which contents in the accommodation space S flow is formed inside the peripheral wall 35 and the dispensing cylinder 41. The extraction tube 41 is connected to the top wall 42 extending in the horizontal direction on the annular wall 34. An outer peripheral wall 43 surrounding the mouth portion 11 is connected to the edge of the top wall 42, and a female screw portion 44 corresponding to the male screw portion 13 of the mouth portion 11 is provided on the inner peripheral surface of the outer peripheral wall 43. . Thereby, the pouring stopper 40 is screwed to the mouth portion 11 with the inner stopper 30 interposed therebetween. Note that an undercut may be used when attaching the spout 40 to the mouth portion 11.

  The lid 50 connects the outer peripheral wall 52 to the edge of the top wall 51 covering the top of the pouring stopper 40, and integrally connects the outer peripheral wall 52 and the outer peripheral wall 43 of the pouring stopper 40 via a hinge 53. It has a form and is detachably held by the spout 40. In addition, without providing the hinge 53, the pouring stopper 40 and the lid 50 may be screwed or undercut fitted. On the lower surface of the top wall 51, a seal cylinder 54 that is in liquid-tight contact with the inner peripheral surface of the dispensing cylinder 41 is provided. Further, on the radially inner side of the seal cylinder 54, there is provided a stopper that is inserted into the extraction cylinder 41 in the closed position of the lid 50 (the attitude shown in FIG. 1A) and suppresses the movement of the spherical body B. Yes. In the present embodiment, a plurality of ribs 56 are provided on the pin 55 extending downward, and a stopper is formed so that the ribs 56 abut on the spherical body B on the inclined surface 36a.

  In discharging the contents from the double container 1 configured as described above, the lid 50 is opened as shown in FIG. 2, and the posture of the double container 1 is changed from the standing posture to the tilted or inverted posture. As a result, the spherical body B that has been in contact with the inclined surface 36a that is the seating portion is displaced by its own weight toward the extraction cylinder 41, and the contents in the accommodation space S pass through the through hole 31 and are adjacent to each other. It flows through the gap defined by the rib 38 and the spherical body B and is discharged from the dispensing cylinder 41. At this time, since the outside air is introduced between the outer layer body 10 and the inner layer body 20 through the above-described outside air introduction hole, only the inner layer body 20 is reduced in volume while maintaining the shape of the outer layer body 10. In addition, since the convex part 38a of the inner plug 30 acts as a retaining member for the spherical body B that is displaced toward the dispensing cylinder 41, the spherical body B is dropped even if the double container 1 is tilted or inverted. There is no end.

  After the contents are discharged, when the double container 1 is returned to the standing posture, the spherical body B is displaced to the accommodation space S side by its own weight as shown in FIG. 3, and is seated on the inclined surface 36a. At this time, most of the contents in the flow path R return to the accommodation space S, while a part of the contents accumulates in the recessed space 37. Thereby, drying with the spherical body B and the inclined surface 36a can be prevented.

  In the present embodiment, since the part on which the spherical body B is seated is the inclined surface 36a whose diameter is reduced toward the accommodation space S, the spherical body B has an inclined surface when the double container 1 is returned to the standing posture. It will be guided to 36a and will move down more reliably, and storage space S can be closed stably.

  In the present embodiment, the pin 55 and the rib 56 are provided as stoppers, and the rib 56 is in contact with the spherical body B on the inclined surface 36a. Therefore, for example, vertical vibration is applied to the container by transportation or the like. Even if it happens, the spherical body B and the inclined surface 36a are not separated. For this reason, the malfunction which the spherical body B and the inclined surface 36a dry unintentionally, and the malfunction which external air enters in the accommodation space S can be prevented effectively. The number of ribs 56 is arbitrary, and may be one. Further, the pin 55 may be in direct contact with the spherical body B without providing the rib 56. Further, the shape of the rib 56 is not limited to being provided in a fragment shape as illustrated, but may be provided in an annular shape continuously in the circumferential direction. Further, the rib 56 may be elastically contacted with the spherical body B (the rib 56 functions as an elastic piece).

  Furthermore, in the present embodiment, the bottom surface of the bottom wall 32 (the central bottom wall 32a) provided with the through holes 31 is flat (no protrusions are provided). As shown in FIG. 2, when the contents are discharged with the double container 1 tilted, the contents can be removed from the through-hole 31 even if the remaining amount of the contents decreases if the bottom surface of the bottom wall 32 is flat. Can be drained. On the other hand, when the inclined wall is provided on the lower surface of the bottom wall as shown in FIG. 4, when the container is tilted or inverted, the liquid level of the contents moved to the bottom wall side is more than the opening of the inclined wall. When it becomes low, it becomes difficult to discharge the contents further. That is, according to the present embodiment, the amount of contents remaining in the accommodation space S can be further reduced.

  According to the present invention, it is possible to reliably hold the liquid pool formed around the spherical body, so that the discharge failure due to the spherical body and the peripheral portion where the spherical body is seated is dried. It is possible to provide a novel double container that can be effectively prevented.

DESCRIPTION OF SYMBOLS 1 Double container 10 Outer layer body 11 Mouth part 12 Body part 13 Male thread part 20 Inner layer body 21 Upper opening 30 Inner plug 31 Through-hole 32 Bottom wall 32a Central bottom wall 32b Intermediate wall 32c Outer edge wall 33 Seal wall 34 Annular wall 35 Perimeter wall 36 Cylindrical wall 36a inclined surface (sitting part)
37 concave portion 38 vertical rib 38a convex portion 40 spout 41 spout tube 42 top wall 43 outer peripheral wall 44 female threaded portion 50 lid 51 top wall 52 outer peripheral wall 53 hinge 54 seal cylinder 55 pin (stopper)
56 rib (stopper)
B Spherical body R Channel S Storage space

Claims (3)

An outer layer body that forms an outer shell of the container, an upper opening that leads to the content storage space, and a volume-reducible inner layer body that can be accommodated inside the outer layer body, and a through-hole connected to the storage space An inner plug having a bottom wall that closes the upper opening and having a peripheral wall that surrounds the through-hole in the bottom wall, and a pouring cylinder that is connected to the peripheral wall and forms a flow path for contents therein And a spout plug attached to the mouth of the outer layer body, and a spherical body that moves in the flow path according to a change in the posture of the outer layer body and closes and opens the through hole. A container,
The inner plug has a cylindrical wall that rises from the edge of the through hole and has a seating portion that contacts the spherical body at the tip thereof and that defines a concave space that is open upward from the peripheral wall. container.   The double container according to claim 1, wherein the seating portion is an inclined surface that decreases in diameter toward the accommodation space.   The lid has a top wall that covers the pouring tube and is detachably held by the pouring tap, and the top wall is inserted into the pouring tube in a closed posture of the lid, and The double container of Claim 1 or 2 provided with the stopper which suppresses a movement of a spherical body.

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