JP7058920B2 - Double container cap - Google Patents

Description

In the present disclosure, the contents attached to the mouth of the outer layer and contained in the inner layer are poured out into a double container provided with the inner layer that can be reduced in volume and the outer layer in which the inner layer is arranged inside. Regarding the cap for the double container to be made.

As a container for accommodating cosmetics such as lotion, shampoo, conditioner or liquid soap, food seasonings, etc., an inner layer body provided to accommodate such contents and to be able to reduce the volume and be deformable, and this inner layer body. There is known a double container provided with an outer layer body that forms the outer shell of the container while accommodating the container inside (for example, Patent Document 1). In this double container, there are a delamination container (laminated peeling container) formed by laminating an outer layer body and an inner layer body from the beginning, and a type of container in which the outer layer body and the inner layer body are individually formed and assembled. The delamination container is made of EBM (Extrusion Blow Molding), in which a laminated parison that has been heated and melted is sandwiched between molds and air is blown into the container to form a laminated container, and the outer layer and the inner layer are separated. There is a biaxially stretched blow molding method in which a laminated container is formed from a preform (container material) formed in a bottomed tubular shape. In such a double container, a cap for a double container is usually provided at the mouth of the outer layer body with a pouring cylinder for pouring out the contents and a check valve for preventing the intrusion of outside air into the inner layer body. Is installed. Then, by pressing the outer layer body, the inside of the inner layer body is pressurized through the air between the outer layer body and the inner layer body, thereby opening the valve body of the check valve and pouring out the contents. Further, the outer layer body is provided with a through hole for taking in outside air between the outer layer body and the inner layer body, and when the outer layer body is restored to its original shape after injection, the outside air is taken in from this through hole and the inner layer body becomes Only the outer layer is restored while the volume is reduced and deformed.

Japanese Unexamined Patent Publication No. 2013-151316

By the way, when the heated contents are filled in the double container body, the contents are cooled after attaching the double container cap to the double container body and sealing it so that the cooling shower does not enter the container. do. When a consumer stores the product manufactured in this way in a refrigerator and then takes it out of the refrigerator and leaves it in a normal temperature environment, the temperature of the air in the space between the outer layer and the inner layer rises. The volume increases and the inner layer is compressed. For this reason, when the upper lid is opened, the contents inside the inner layer may be ejected and spilled at an unintended force by the consumer.

The present disclosure has an object of solving such a problem, and an object of the present invention is to propose a cap for a double container capable of suppressing spillage of contents during use. ..

The double container cap of the present disclosure is
A double container cap to be attached to a double container body having an inner layer for accommodating the contents and a squeezeable outer layer for accommodating the inner layer and having a through hole in the mouth. There,
A cap body having a pouring hole for pouring out the contents from the inner layer body and attached to the mouth of the outer layer body, and a cap body.
A lid covering at least a part of the cap body including the ejection hole is provided.
The cap body has an outside air introduction hole that allows the space between the inner layer body and the outer layer body to communicate with the outside through the through hole.
The lid has an opening and a movable top plate that can move in the vertical direction on the upper wall of the lid while covering the outside air introduction hole.
The movable top plate is characterized in that the opening of the upper wall is closed at the lowest point of the movable range and the opening of the upper wall is opened at the uppermost point of the movable range.

Further, in the double container cap of the present disclosure, in the above configuration, when the double container cap whose lid has never been opened is unopened, the movable top plate is positioned at the lowest point. , Closing the opening and sealing the pouring hole,
When the lid is opened and then closed again, it is preferable that the movable top plate is positioned at the uppermost point, the opening is opened, and the pouring hole is sealed.

Further, in the double container cap of the present disclosure, in the above configuration, the movable top plate has a substantially cylindrical portion having a substantially cylindrical shape that can move in the vertical direction while sliding with respect to the upper wall, and the cylinder. It has a top plate portion that is connected to the upper end portion of the shaped portion and extends substantially parallel to the upper wall, and the lower portion of the tubular portion constitutes a ventilation portion in which a ventilation path is intermittently provided in the circumferential direction.
The tubular portion abuts on the upper wall at the lowest point to close the opening, and the upper end portion of the ventilation portion at the uppermost point determines the contact position between the tubular portion and the upper wall. It is preferable to open the opening by positioning it upward beyond the position.

Further, in the above configuration, the double container cap of the present disclosure has an annular shape that protrudes radially outward from the upper part of the tubular portion and abuts on the upper wall to restrict the downward movement of the movable top plate. A protrusion may be provided, and an engaging protrusion may be provided at the lower portion of the tubular portion so as to project outward in the radial direction and abut on the upper wall to restrict the upward movement of the movable top plate. preferable.

Further, in the double container cap of the present disclosure, in the above configuration, it is preferable that the movable top plate has a seal cylinder that hangs down from the lower surface of the top plate portion and fits into the pouring hole.

According to the double container cap of the present disclosure, it is possible to propose a double container cap capable of suppressing spillage of contents during use.

It is a front sectional view which shows the state (when unopened) that the cap for a double container which concerns on one Embodiment of this disclosure is attached to the mouth part of a double container body. It is a front sectional view which shows the state (after opening) that the cap for a double container which concerns on one Embodiment of this disclosure is attached to the mouth part of a double container body.

Hereinafter, the present disclosure will be described in more detail with reference to the drawings.

FIG. 1 shows a state in which the double container cap 1 according to the embodiment of the present disclosure is attached to a double container main body 2 compatible with the cap 1. The double container cap 1 is composed of a cap body 10, an inner plug 20, a moving valve body 30, a coupling valve 40, and a lid body 50. Further, the double container main body 2 is composed of an inner layer body 3 and an outer layer body 4. In the present specification, claims, abstracts and drawings, the side where the lid 50, which will be described later, is located is the upper side (upper side in FIG. 1), and the side where the double container body 2 is located is the lower side (FIG. 1). The lower side in). Further, the radial outer side is a direction toward the outside along a straight line perpendicular to the central axis O through the central axis O of the double container cap 1 in FIG. 1, and the radial inner side is along the straight line. It shall mean the direction toward the central axis O.

First, the double container main body 2 will be described. In the present embodiment, the double container main body 2 is formed by performing extrusion blow molding on a parison formed by laminating the synthetic resin material of the inner layer 3 and the synthetic resin material of the outer layer 4 to form a laminated peeling container. I'm shaping. Ethylene-vinyl alcohol copolymer resin (EVOH) or nylon is used as the material of the inner layer 3 constituting the double container main body 2. Further, low density polyethylene (LDPE) or high density polyethylene resin (HDPE) is used as the material of the outer layer body 4, and high squeeze property can be imparted particularly when LDPE is used. However, the present invention is not limited to this aspect, and when a laminated peeling container is formed by, for example, biaxial stretching blow molding, polypropylene (PP) is used as the material of the inner layer 3 and the material of the outer layer 4 is used. Polyethylene terephthalate (PET) may be used. Further, as the material of the inner layer body 3 and the outer layer body 4, other resins having low compatibility with each other can be used. Further, the double container main body 2 may be a container in which the outer layer body 4 and the inner layer body 3 are individually formed and assembled instead of the laminated peeling container. Further, although not shown, one or a plurality of adhesive bands extending vertically to partially join the inner layer 3 and the outer layer 4 between the inner layer 3 and the outer layer 4. May be provided.

The inner layer 3 is formed so as to be deformable in a reduced volume, and in the present embodiment, it is obtained by peeling the double container body 2 formed in a laminated state from the outer layer 4. .. The inner layer 3 includes a storage space S for accommodating the contents inside the inner layer body 3 and an upper opening 3a connected to the accommodation space S.

The outer layer 4 is formed by connecting a cylindrical mouth peripheral wall 4a (mouth) to a body portion having a reversible flexibility (not shown) and a bottom portion that closes the lower end of the body portion. A male screw portion 4b is provided on the outer peripheral surface of the mouth portion peripheral wall 4a. Further, the peripheral wall 4a of the mouth portion is provided with a through hole 4c for taking in air between the inner layer and the inner layer 3, and further, a male screw portion 4b is provided in the vertical direction on the outer peripheral surface provided with the through hole 4c. A notched groove 4d is provided.

Next, regarding the double container cap 1, first, the cap body 10 will be described. The cap main body 10 includes an outer peripheral wall 11 surrounding the mouth peripheral wall 4a, and a female screw portion 12 corresponding to the male screw portion 4b of the mouth peripheral wall 4a is formed on the inner peripheral surface of the outer peripheral wall 11. Further, the top wall 13 is integrally connected to the upper part of the outer peripheral wall 11. A pouring cylinder 14 is provided on the upper surface of the top wall 13, and a pouring hole 14a for pouring out the contents is formed on the inner peripheral surface of the pouring cylinder 14. Further, on the lower surface of the top wall 13, a pair of upper fitting walls 15 having a concentric double arrangement are provided. Further, an outside air introduction hole 16 penetrating the top wall 13 is provided on the outer side in the radial direction from the upper fitting wall 15. In the present embodiment, a step is provided between the central portion and the outer peripheral portion of the top wall 13 (the height of the outer peripheral portion is lower than that of the central portion), and the step is opened outward in the radial direction. The outside air introduction hole 16 is provided. With this configuration, the contents overflowing on the top wall 13 are less likely to enter the outside air introduction hole 16. The lower end of the outer peripheral wall 11 is in airtight contact with the mouth peripheral wall 4a, and a ventilation passage T leading to the through hole 4c is provided between the mouth peripheral wall 4a and the outer peripheral wall 11.

In the present embodiment, the groove portion 4d that cuts out the male screw portion 4b in the vertical direction is configured to be used as the ventilation passage T, but the present embodiment is not limited to this embodiment. The groove portion 4d may not be provided, and the gap between the male threaded portion 4b and the female threaded portion 12 may be used as the ventilation path T.

An inner plug 20 is provided inside the cap body 10. The inner plug 20 is located between the injection hole 14a and the inner layer body 3, and includes a partition wall 21 that covers the upper opening 3a of the inner layer body 3.

The partition wall 21 has a tubular shape having an opening on the injection hole 14a side that opens to the injection hole 14a side at one end and an inner layer 3 side opening that opens to the accommodation space S side of the inner layer 3 at the other end. A wall 22 is provided. As shown in FIG. 1, the tubular wall 22 of the present embodiment is provided with a through hole 22a in a part of the partition wall 21, and the cylindrical portion 22b extends from the edge portion of the through hole 22a toward the accommodation space S. , Is a cylindrical portion having a through hole 22d at the lower end via the inclined portion 22c. The opening on the injection hole 14a side corresponds to the through hole 22a, and the opening on the inner layer 3 side corresponds to the through hole 22d in the present embodiment. Further, the partition wall 21 is provided with a hole (communication port 23) adjacent to the tubular wall 22 and penetrating the partition wall 21. In the present embodiment, the communication port 23 is provided at one place adjacent to one tubular wall 22, but the number of the communication port 23 and the tubular wall 22 is not limited to this embodiment. Here, the relationship between the total opening area of the inner layer 3 side opening (through hole 22d) in the tubular wall 22 and the total opening area of the communication port 23 is preferably larger than the total opening area of the communication port 23. However, it is not always limited to this.

Further, the partition wall 21 is provided with a step portion 24 that bends toward the accommodation space S on the radial outer side of the communication port 23, and an upwardly open groove is provided on the radial outer side of the step portion 24 with the step portion 24. The fitting wall 25 to be formed is provided. An annular seal wall 26 that sandwiches the inner layer 3 from the outer layer 4 is provided on the lower surface of the partition wall 21. As shown in FIG. 1, at least one groove 27 is provided on the outer edge of the partition wall 21.

In the tubular wall 22, a moving valve body 30 which is spherical in the present embodiment is provided. The mobile valve body 30 can move between the tubular wall 22 and the mobile valve body 30 according to the posture change of the double container body 2, and the contents hardly pass through (substantially do not pass through). There is a gap. Since the injection hole 14a side of the cylindrical wall 22 is opened by the through hole 22a and the accommodation space S side is opened by the through hole 22d, the contents that have entered the tubular wall 22 can move through the valve. It does not interfere with the movement of the body 30. Further, the moving valve body 30 has the double container main body 2 in an upright posture (a posture in which the bottom of the double container main body 2 is placed on a horizontal table), so that the inclined portion 22c of the tubular wall 22 is placed. Sit down. Thereby, the accommodation space S can be sealed.

As will be described later, when the body of the outer layer 4 is pressed (squeezed) while the double container body 2 is changed from the standing posture to the tilted posture in order to dispense the contents from the pouring hole 14a, the tubular wall 22 is used. The moving valve body 30 inside moves to the injection hole 14a side. Then, after the required amount of the contents are poured out, the pressure on the body of the outer layer 4 is released and the double container body 2 is returned to the original standing posture. Move to the accommodation space S side of the body 3. As a result, a space is created on the pouring hole 14a side of the tubular wall 22, so that the contents remaining in the pouring cylinder 14 and the inner space K1 are passed through the through hole 22a to the tubular wall 22 side. It can be moved (suckback function) and can effectively prevent dripping.

A check valve 43 is provided between the cap body 10 and the inner plug 20. The check valve 43 is provided inside the cylindrical annular wall 41 in the radial direction as a part of the coupling valve 40. The check valve 43 is a so-called three-point valve having a structure in which three points on the outer peripheral edge of the disc-shaped check valve valve body 43a are supported by the check valve arm 43b. When the pressure inside the inner layer 3 is increased by the squeeze of the outer layer 4, the check valve body 43a is lifted upward in FIG. 1 against the elastic force of the check valve arm 43b by the pressure, and is lifted from the partition wall 21. By separating the check valve 43, the check valve 43 is opened. When the squeeze of the outer layer body 4 is released, no pressure is applied to the check valve valve body 43a, so that the check valve valve body 43a abuts against the partition wall 21 again due to its own weight and the elastic force of the check valve arm 43b, and reverse The check valve 43 is closed.

In the present embodiment, the check valve body 43a is made of a disk-shaped member, but the present invention is not limited to this embodiment, and the check valve body 43a may be a member having a rectangular shape or the like. Further, the check valve 43 does not necessarily have to be a three-point valve, and various valves such as a two-point valve and a thin-walled annular valve that are opened by a positive pressure in the inner layer 3 can be used.

On the other hand, as shown in FIG. 1, an outside air introduction valve 45 is provided on the radial outer side of the annular wall 41. The outside air introduction valve 45 is formed as an annular and thin-walled valve body 45a on the radial outer side of the annular wall 41. The valve body 45a allows only a very small amount of air to pass by connecting the inner peripheral side end portion to the outer peripheral surface of the annular wall 41 and seating the outer peripheral side end portion on the lower surface of the top wall 13 of the cap body 10. The outside air introduction hole 16 is closed to an allowable extent. In the present embodiment, the annular valve body 45a is formed of a soft member, while it is formed in a curved shape that is convex toward the inner layer 3 side, as can be seen from FIG. By adopting this curved shape, the valve body 45a can be in contact with the top wall 13 until a predetermined negative pressure is applied, and the outside air introduction valve 45 can be maintained in a semi-closed state that allows only a very small amount of air to pass through. .. When the consumer presses the body of the outer layer 4 and a positive pressure is applied to the valve body 45a, the valve body 45a abuts on the top wall 13 with a stronger pressing force, so that the outside air introduction valve 45 is used. It becomes a closed state that does not allow the passage of air.

Then, when a negative pressure is generated in the space between the outer layer body 4 and the inner layer body 3, the valve body 45a is easily elastically deformed downward. Therefore, the outside air introduction valve 45 is opened, and the outside air can be introduced smoothly.

In the present embodiment, the check valve 43 and the outside air introduction valve 45 are configured to be integrally provided with the annular wall 41, but the present invention is not limited to this embodiment. For example, the check valve 43 may be provided on the first annular wall and the outside air introduction valve 45 may be provided on the second annular wall so that the two may be separately configured. Further, the check valve 43 and the outside air introduction valve 45 may be fixed to something other than the annular wall 41.

In the present embodiment, even when the check valve body 43a is closed, the through hole 22a and the injection hole 14a communicate with each other through the gaps on both sides of the check valve arm 43b in the width direction. As a result, the through hole 22a of the cylindrical wall 22 is always opened. When the check valve 43 is attached to the cap body 10 and the inner plug 20 as shown in FIG. 1, the lower portion of the annular wall 41 is fitted and held between the step portion 24 and the fitting wall 25, and the annular wall 41 is annular. The upper part of the wall 41 is fitted and held by a pair of upper fitting walls 15. As a result, as shown in FIG. 1, an inner space K1 that communicates the communication port 23 and the injection hole 14a to form a flow path for the contents is formed inside the annular wall 41 in the radial direction, and is annular. On the radial outer side of the wall 41, an outer space K2 is formed in which the outside air introduction hole 16 and the groove 27 communicate with each other to form an air flow path.

As shown in FIG. 1, the lid 50 is connected to the outer peripheral wall 11 of the cap body 10 via a hinge 51, and the hinge 51 is bent to cover the injection hole 14a and the outside air introduction hole 16. Can be done. More specifically, the lid 50 has an upper wall 52, a side wall 53 connected to the outer edge portion of the upper wall 52 and connected to the outer peripheral wall 11, and a movable top plate 60 engaged with the upper wall 52. I have. Further, the inner edge portion of the upper wall 52 constitutes an opening cylinder wall 52a forming the opening 52c. A grip portion 58 projecting outward in the radial direction is provided on the upper portion of the side wall 53 on the side facing the hinge 51 on the periphery. The user grips the grip portion 58 and raises the lid 50 upward. It can be lifted up and opened, or pushed down to close it. When the lid 50 is closed, the inner peripheral surface of the side wall 53 is undercut engaged with the top wall step portion 13a, and the lid 50 is firmly fixed to the cap body 10. The lid 50 may be formed separately from the cap body 10 without providing the hinge 51, and may be configured to be attached to the cap body 10 with screws or undercuts.

The movable top plate 60 has a substantially cylindrical tubular portion 63 and a top plate portion 62 that is connected to the upper end portion of the tubular portion 63 and extends substantially parallel to the upper wall 52. An annular protrusion 62a is provided on the upper portion of the tubular portion 63 so as to project outward in the radial direction and abut on the opening tubular wall 52a of the upper wall 52. The movable top plate 60 is restricted from moving downward by the protrusion 52b provided on the inner surface of the lower portion of the opening cylinder wall 52a abuting on the annular protrusion 62a.

Further, at the lower portion of the tubular portion 63, an engaging protrusion 63a that projects outward in the radial direction and engages with the opening tubular wall 52a of the upper wall 52 is provided. As shown in FIG. 1, the engaging protrusion 63a is formed at the substantially lower end portion of the ventilation portion 63b in which the ventilation passage is intermittently provided in the circumferential direction at the lower portion of the tubular portion 63, and is intermittent in the circumferential direction. It is provided as a target. The movable top plate 60 is restricted from moving upward by the opening cylinder wall 52a coming into contact with the engaging protrusion 63a.

When the double container cap 1 whose lid 50 has never been opened is unopened, the movable top plate 60 is arranged at the lowest point of the movable range shown in FIG. At this position, the lower surface of the annular protrusion 62a of the movable top plate 60 abuts on the protrusion 52b on the upper wall 52 side, and the outer peripheral surface of the tubular portion 63 fits into the inner peripheral surface of the protrusion 52b. The movable top plate 60 is restricted from moving further downward, and the space between the lid 50 and the cap body 10 is hermetically sealed to the outside. In this state, the seal cylinder 64 hanging from the lower surface of the top plate portion 62 of the movable top plate 60 is fitted to the lower portion 14b of the pouring hole 14a of the cap body 10. The fitting of the tubular portion 63 and the protruding wall 52b and the fitting of the seal cylinder 64 and the lower portion 14b of the ejection hole 14a are configured by a tight fitting or an intermediate fitting. As a result, a predetermined frictional force acts between the tubular portion 63 and the protrusion 52b, and between the seal cylinder 64 and the ejection hole 14a, so that the double container cap 1 can be moved when unopened. The top plate 60 unintentionally moves upward to damage the seal between the outside and the inside of the lid 50, or a positive pressure is generated in the inner layer 3 due to the pressing of the body, and the seal cylinder 64 and the pouring hole 14a are generated. It is possible to prevent the mating with and from being disengaged.

In this way, by sealing the opening 52c of the upper wall 52 of the lid 50 with the movable top plate 60, the contents in the heated state at the time of manufacturing are filled in the double container main body 2, and then the double container main body 2 is filled. The double container cap 1 can be attached and sealed so that the cooling water does not enter the double container main body 2 when the contents are cooled by the cooling shower.

On the other hand, as will be described later, when the lid 50 is opened against the frictional force between the seal cylinder 64 and the ejection hole 14a and the lid 50 is closed again after using the contents, the seal cylinder 64 and the injection hole 14a are injected. Due to the frictional force with the exit hole 14a, the movable top plate 60 does not return to the original position in FIG. 1, and as shown in FIG. 2, the engaging protrusion 63a is positioned at a height position where it abuts on the opening cylinder wall 52a. To. At this time, the upper end portion of the ventilation portion 63b in which the ventilation passage is intermittently provided in the circumferential direction at the lower portion of the tubular portion 63 is positioned upward beyond the contact position between the tubular portion 63 and the protrusion 52b. Therefore, the space between the lid 50 and the cap body 10 can be communicated with the outside through the ventilation path.

When packing and shipping a double container filled with contents, it is preferable to cover at least the double container cap 1 with a shrink film or the like from the state shown in FIG. As a result, the lid 50 can be opened during transportation to prevent the contents from being ejected, and can also have a virgin seal function (unopened guarantee function).

When ejecting the contents from the double container cap 1 configured as described above, after removing the shrink film, the lid 50 is opened and the double container body 2 is changed from the standing posture to the tilted posture. Then, the body of the outer layer 4 is pressed (squeezed). As a result, the moving valve body 30 in the tubular wall 22 moves to the injection hole 14a side, and the accommodation space S is pressurized through the air between the inner layer body 3 and the outer layer body 4. When the body of the outer layer 4 is pressed, pressure is also applied to the valve body 45a from below through the through hole 4c, the ventilation passage T, and the groove 27, so that the outside air introduction valve 45 is closed. Therefore, even if the outer layer 4 is pressed, the air between the inner layer 3 and the outer layer 4 does not leak from the outside air introduction hole 16, and the pressurization to the accommodation space S is not hindered. Then, since the positive pressure in the accommodation space S lifts the check valve valve body 43a, the contents flow out from the communication port 23 and are discharged to the outside from the injection hole 14a via the inner space K1. Here, since the total opening area of the communication port 23 is larger than the total opening area of the opening (through hole 22d) on the inner layer 3 side in the tubular wall 22, the communication port 23 is used when the contents flow. The resistance is further reduced and the pouring can be done smoothly.

After pouring out the required amount of contents, the pressure on the body of the outer layer 4 is released. As a result, the positive pressure in the accommodation space S returns to the outside air pressure, and the check valve body 43a closes the communication port 23 again, so that the entry of outside air into the accommodation space S can be suppressed. Further, since the outer layer 4 tries to return to the original shape by its own restoring force, the space between the inner layer 3 and the outer layer 4 becomes a negative pressure. As a result, a negative pressure is also applied below the outside air introduction valve 45 through the through hole 4c, the ventilation passage T, and the groove 27, so that the valve body 45a is pulled downward and the outside air introduction valve 45 is opened. With the opening of the outside air introduction valve 45, air flows in from the outside air introduction hole 16, passes through the outer space K2, the groove 27, and the ventilation passage T, and is the space between the outer layer body 4 and the inner layer body 3 from the through hole 4c. Air is introduced into. As a result, the outer layer 4 can be restored while the inner layer 3 is reduced in volume and deformed.

When the check valve body 43a closes the communication port 23, the contents remain in the pouring cylinder 14 and the inner space K1, but when the double container body 2 is returned to the original standing posture. , The mobile valve body 30 moves to the accommodation space S side of the inner layer body 3 due to its own weight or the like. As a result, a space is created on the pouring hole 14a side of the tubular wall 22, so that the contents remaining in the pouring cylinder 14 and the inner space K1 are passed through the through hole 22a to the tubular wall 22 side. It can be moved (suckback function) and can effectively prevent dripping.

When the content is a food seasoning or the like, the consumer stores the double container in which the content remains in a refrigerator or the like in order to keep the content fresh. Then, when the double container is taken out from the refrigerator and placed in a normal temperature environment for a certain period of time in order to use the contents again, if the opening 52c is not provided, the space between the outer layer 4 and the inner layer 3 is formed. As the temperature of the air rises, the pressure increases and the inner layer 3 is compressed. As a result, the pressure inside the inner layer 3 increases, so that when the lid 50 is opened, the contents inside the inner layer 3 may be ejected and spilled at an unintended force by the consumer.

In the present embodiment, even if the pressure of the air in the space between the outer layer 4 and the inner layer 3 rises after the double container is taken out from the refrigerator, the pressure rises slowly, so that the pressure. Is opened to the outside from the opening 52c through a slight gap between the valve body 45a of the outside air introduction valve 45 and the top wall 13 and a ventilation path formed in the ventilation portion 63b of the movable top plate 60. Therefore, since the compression of the inner layer 3 can be suppressed, even if the inner layer 3 is stored in the refrigerator and then taken out, it is possible to suppress the unintended ejection of the contents due to the opening of the lid 50.

As described above, the double container cap 1 according to the present embodiment has a pouring hole 14a for pouring out the contents from the inner layer 3, and the mouth peripheral wall 4a (mouth) of the outer layer 4 is provided. The cap body 10 is provided with a cap body 10 attached to the cap body 10 and a lid body 50 that covers at least a part of the cap body 10 including the injection hole 14a. It has an outside air introduction hole 16 that communicates the space between the inner layer 3 and the outer layer 4 with the outside through the hole 4c, and the lid 50 covers the outside air introduction hole 16 and forms on the upper wall 52 of the lid 50. It has an opening 52c and a movable top plate 60 that can move in the vertical direction, and the movable top plate 60 closes the opening 52c of the upper wall 52 at the lowest point of the movable range and is upward at the uppermost point of the movable range. The opening 52c of the wall 52 was configured to be open. By adopting such a configuration, it is possible to suppress the compression of the inner layer 3 when the double container in which the contents remain is stored in the refrigerator and then taken out and placed in a normal temperature environment, so that the lid 50 can be used. It is possible to suppress the unintended ejection of contents due to the opening of the refrigerator.

Further, in the present embodiment, when the double container cap 1 whose lid 50 has never been opened is unopened, the movable top plate 60 is positioned at the lowest point to close the opening 52c and note. When the exit hole 14a was sealed and the lid 50 was opened and then closed again, the movable top plate 60 was positioned at the uppermost point, the opening 52c was opened, and the injection hole 14a was sealed. By adopting such a configuration, even if the consumer does not intentionally switch the height position of the movable top plate 60, the normal operation performed by the consumer when using the contents of opening and closing the lid 50 can be performed. The movable top plate 60 can be moved to the uppermost point of the movable range to communicate the space between the lid 50 and the cap body 10 with the outside, and the ejection of unintended contents can be suppressed.

Further, in the present embodiment, the movable top plate 60 is connected to a substantially cylindrical tubular portion 63 that can move in the vertical direction while sliding with respect to the upper wall 52, and an upper end portion of the tubular portion 63. The top plate portion 62 extending substantially parallel to the wall 52 is provided, and the lower portion of the tubular portion 63 constitutes a ventilation portion 63b in which ventilation passages are intermittently provided in the circumferential direction, and the tubular portion 63 is the most. At the lower point, it abuts on the upper wall 52 to close the opening 52c, and at the uppermost point, the upper end portion of the ventilation portion 63b is positioned upward beyond the contact position between the tubular portion 63 and the upper wall 52. It was configured to open the opening 52c. By adopting such a configuration, the opening 52c of the lid 50 can be opened and closed only by moving the movable top plate 60 up and down, so that it is possible to suppress unintended ejection of contents due to the opening of the lid 50 with a simple configuration. Can be done.

Further, in the present embodiment, an annular protrusion 62a is provided on the upper portion of the tubular portion 63 so as to project outward in the radial direction and abut against the protrusion 52b of the upper wall 52 to restrict the downward movement of the movable top plate 60. At the bottom of the tubular portion 63, an engaging protrusion 63a that protrudes outward in the radial direction and abuts on the opening tubular wall 52a of the upper wall 52 to restrict the upward movement of the movable top plate 60 is provided. Configured. By adopting such a configuration, the vertical movement of the movable top plate 60 is restricted to an appropriate height range, so that the opening 52c of the lid 50 can be opened and closed more smoothly to open the lid 50. It is possible to suppress the unintended ejection of contents.

Further, in the present embodiment, the movable top plate 60 is configured to have a seal cylinder 64 that hangs down from the lower surface of the top plate portion 62 and fits into the pouring hole 14a. By adopting such a configuration, when the seal cylinder 64 is not opened, the movable top plate 60 is strongly pushed downward against the frictional force between the seal cylinder 64 and the injection hole 14a, so that the movable top plate 60 is positioned at the lowest point. Then, the inside of the lid 50 can be sealed from the outside. Further, at the time of use, the seal cylinder 64 is pulled out upward by the contact between the annular protrusion 62a and the protrusion 52b due to the opening of the lid 50, but the lid 50 is returned to the original closed state after the contents are used. However, the movable top plate 60 does not return to the lowest point shown in FIG. 1 due to the frictional force between the seal cylinder 64 and the pouring hole 14a. Then, as shown in FIG. 2, the movable top plate 60 is positioned at a height position where the engaging protrusion 63a abuts on the opening cylinder wall 52a. As a result, the seal cylinder 64 is fitted in the pouring hole 14a at a height different from that at the time of unopening to seal the pouring hole 14a. Further, the space between the lid 50 and the cap body 10 can be communicated with the outside through the ventilation path formed in the ventilation portion 63b and the opening 52c. Therefore, even if the consumer does not intentionally switch the height position of the movable top plate 60, the movable top plate 60 can be moved within the movable range by the normal operation performed by the consumer when using the contents of opening the lid 50. It is possible to move to the uppermost point to communicate the space between the lid 50 and the cap body 10 with the outside, and suppress the ejection of unintended contents.

Although the present disclosure has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these modifications and modifications are included in the scope of the present invention. For example, the functions included in each component can be rearranged so as not to be logically inconsistent, and a plurality of components can be combined or divided into one. It should be understood that these are also included in the scope of the present invention.

For example, in the present embodiment, the movable top plate 60 is configured to have a tubular portion 63 and a top plate portion 62, but the present invention is not limited to this embodiment, and the opening portion is formed by the vertical movement of the movable top plate 60. The 52c may be configured to be opened and closed.

Further, in the present embodiment, the movable top plate 60 is configured to have the seal cylinder 64, but the present invention is not limited to this embodiment, and the seal cylinder 64 is not provided so that the consumer can use the movable top plate 60 at an appropriate timing. It may be moved in the vertical direction.

Further, the cross-sectional shape of the moving valve body 30 can be appropriately changed according to the cross-sectional shape of the tubular wall 22. Further, the cylindrical wall 22 and the moving valve body 30 do not necessarily have to be provided. Further, the outer layer body 4 and the inner layer body 3 are not limited to those formed by blow molding a parison having a laminated structure, and the outer layer body 4 and the inner layer body 3 are individually formed, and then the inner layer body 3 is formed as an outer layer body. It may be installed in 4.

According to the present disclosure, it is possible to propose a double container cap 1 capable of suppressing spillage of contents during use.

1 Double container cap 2 Double container body 3 Inner layer 3a Upper opening 4 Outer layer 4a Mouth peripheral wall (mouth)
4b Male threaded part 4c Through hole 4d Groove part 10 Cap body 11 Outer wall 12 Female threaded part 13 Top wall 13a Top wall step 14 Injection cylinder 14a Injection hole 14b Lower part 15 Upper fitting wall 16 Outside air introduction hole 20 Inner plug 21 Partition wall 22 Cylindrical wall 22a through hole (opening on the pouring hole side)
22b Cylindrical part 22c Inclined part 22d Through hole (opening on the inner layer side)
23 Communication port 24 Steps 25 Fitting wall 26 Seal wall 27 Groove 30 Moving valve body 40 Coupling valve 41 Circular wall 43 Check valve 43a Check valve valve body 43b Check valve arm 45 Outside air introduction valve 45a Valve body 47 Circumferential wall 50 Lid 51 Hinge 52 Upper wall 52a Opening cylinder wall 52b Protrusion wall 52c Opening 53 Side wall 58 Grip part 60 Movable top plate 62 Top plate part 62a Circular protrusion 63 Cylindrical part 63a Engagement protrusion 63b Ventilation part 64 Seal cylinder K1 Inner space K2 Outer space O Central axis S Containment space T Ventilation channel

Claims (5)

A cap for a double container to be attached to a double container body including an inner layer for accommodating the contents and an outer layer for accommodating the inner layer and having a through hole at the mouth. And
A cap body having a pouring hole for pouring out the contents from the inner layer body and attached to the mouth of the outer layer body, and a cap body.
A lid covering at least a part of the cap body including the ejection hole is provided.
The cap body has an outside air introduction hole that allows the space between the inner layer body and the outer layer body to communicate with the outside through the through hole.
The lid has an opening and a movable top plate that can move in the vertical direction on the upper wall of the lid while covering the outside air introduction hole.
The movable top plate is a double container cap characterized by closing the opening of the upper wall at the lowest point of the movable range and opening the opening of the upper wall at the uppermost point of the movable range. .. When the double container cap whose lid has never been opened is unopened, the movable top plate is positioned at the lowest point, closes the opening, and seals the pouring hole.
The double container according to claim 1, wherein when the lid is opened and then closed again, the movable top plate is positioned at the uppermost point, the opening is opened, and the pouring hole is sealed. cap. The movable top plate has a substantially cylindrical portion that can move in the vertical direction while sliding with respect to the upper wall, and a ceiling that is connected to the upper end portion of the tubular portion and extends substantially parallel to the upper wall. It has a plate portion, and the lower portion of the tubular portion constitutes a ventilation portion in which ventilation passages are intermittently provided in the circumferential direction.
The tubular portion abuts on the upper wall at the lowest point to close the opening, and the upper end portion of the ventilation portion at the uppermost point determines the contact position between the tubular portion and the upper wall. The double container cap according to claim 1 or 2, wherein the opening is opened by being positioned upward beyond the above. An annular protrusion is provided on the upper portion of the tubular portion, which projects outward in the radial direction and abuts on the upper wall to restrict the downward movement of the movable top plate, and the lower portion of the tubular portion has a diameter. The double container cap according to claim 3, further comprising an engaging protrusion that protrudes outward in the direction and abuts on the upper wall to restrict the upward movement of the movable top plate. The double container cap according to claim 3 or 4, wherein the movable top plate has a seal cylinder that hangs down from the lower surface of the top plate portion and fits into the pouring hole.

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