JP2022055861A - Spout port structure - Google Patents

Abstract

To provide a spout port structure in which an inside plug is opened to be unplugged, which is improved in convenience.SOLUTION: A spout port structure comprises: a mouth part having an outer screw formed therein; an inside plug which includes a bulkhead blocking an open end of the mouth part; and a cap which includes a side wall having an inner screw formed therein, a top plate having a spout port and a protruding part protruding from an outer periphery of the spout port of the top plate toward the bulkhead and having a communication hole, which is covered on the mouth part and the inside plug and is screwed to the mouth part. When the cap is rotated in a closing direction, the protruding part ruptures the bulkhead, which enables contents to pass through the communication hole and the spout port, so that the inside plug is unplugged.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pouring port structure of a packaging container.

A packaging container provided with a sealing inner stopper and a cap for the packaging container has been proposed in which the time and effort for opening the packaging container is reduced. Patent Document 1 discloses a packaging container in which the cap cuts off a planned opening portion of the inner plug as the cap rotates in the closing direction.

International Publication No. 2007/126062

In the packaging container of Patent Document 1, for example, by removing the cap, the separation portion provided in the inner plug is separated to expose the opening and used as the spout. Therefore, the spout is designed according to the ease of forming the opening. There was a limit to the convenience, such as a low degree of freedom.

The present invention has been made in view of such a problem, and an object of the present invention is to further improve convenience in a spout structure in which a part of an inner plug is opened and opened.

One aspect of the present invention for solving the above problems is to provide a mouth portion in which an external screw is formed, an inner plug including a partition wall that closes the opening end of the mouth portion, a side wall in which an internal screw is formed, and a spout. Cap It is a spout structure in which the protrusion breaks the partition wall and the contents can pass through the communication hole and the spout by the rotation operation in the closing direction.

According to the present invention, the contents that have passed through the opening formed in the inner plug can be further passed through the communication hole provided in the cap as a spout, and the pouring speed and the pouring direction can be adjusted. Various conveniences can be improved, such as easy design.

Longitudinal sectional view of the spout structure according to the embodiment of the present invention. A plan view and a side view of a protrusion according to an embodiment of the present invention. Longitudinal sectional view of the inner plug according to the embodiment of the present invention and the inner plug according to a modified example. Longitudinal sectional view of the spout structure according to a modified example of the embodiment of the present invention. The figure which shows typically the mouth part and the cap which concerns on one Embodiment of this invention. Longitudinal sectional view of a cap according to a modified example of the embodiment of the present invention.

(Embodiment)
FIG. 1 shows a vertical cross-sectional view of the spout structure of the packaging container according to the embodiment of the present invention. FIG. 1A shows an unopened spout structure, and FIG. 1B shows an unopened spout structure. The packaging container is not limited, and examples thereof include resins such as polypropylene, polyethylene, and polyethylene terephthalate, molded bodies of these laminates, and laminated tubes.

The spout structure includes a mouth portion 11 which is a part of the container body 10 and has an open end, an inner plug 20, and a cap 30. An external screw 12 is formed on the mouth portion 11. As an example, the inner plug 20 includes an annular fitting portion 21 that fits with the open end of the mouth portion 11, and a partition wall 22 inside the fitting portion 21. The cap 30 includes a side wall 31 on which the internal screw 37 is formed, a top plate 32 having a spout 36, and a protrusion 35 protruding from the outer periphery of the spout 36 of the top plate 32 toward the partition wall 22. The cap 30 is put on the mouth portion 11 and the inner plug 20 and screwed with the mouth portion 11. In the example of FIG. 1, the cap 30 further includes a hinge 33 and a lid 34 connected to the hinge 33 and capable of opening and closing the spout 36. The inner plug 20 can be suitably manufactured using polyethylene (low density polyethylene, linear low density polyethylene), and the cap 30 can be suitably manufactured using polypropylene or polyethylene (high density polyethylene, linear low density polyethylene).

FIG. 2 shows a plan view and a side view of the protrusion 35 according to an example. The protrusion 35 has a pointed shape toward the partition wall 22 and also has a communication hole 39.

As shown in FIG. 1A, in the unopened state, the partition wall 22 of the inner plug 20 closes the mouth portion 11. By the rotation operation of the cap 30 in the closing direction, the protrusion 35 is opened by breaking the partition wall 22 as shown in FIG. 1 (b). In the state shown in FIG. 1 (b), the contents can pass through the communication hole 39 and the spout 36. The partition wall 22 may be provided with a strength weakening line such as one or more half cuts extending radially from the center in order to adjust the breaking strength. Further, the inner plug 20 may be laminated with a methylylenediamine-based film, an ethylene-vinyl alcohol-based film having a barrier property, a film containing an aluminum layer, or the like.

FIG. 3A shows an enlarged cross-sectional view of the inner plug 20 shown in FIG. The fitting portion 21 is fitted and attached to the open end of the mouth portion 11, and is preferably welded to the open end by heat or ultrasonic waves. As shown in FIG. 3B, the inner plug 20 may further include an annular member 23 covered with the fitting portion 21 to increase the mounting strength. Alternatively, the inner plug 20 may be formed of a single layer of an aluminum foil coated with the above-mentioned film having a barrier property, a hot melt adhesive, or the like, which is welded to the opening end of the mouth portion 11 to close the opening end, or an aluminum foil. It may be a laminate with a film.

In this way, since the spout 36 is provided separately from the communication hole 39 of the protrusion 35 that breaks the partition wall 22, the shape of the spout 36 can be designed independently of the ease of opening the contents. It is possible to easily adjust the pouring speed according to the viscosity and application. The pouring speed can also be adjusted by adjusting the size of the communication hole 39. FIG. 4 shows a vertical cross-sectional view according to another example of the spout structure. In this example, the cap 30 is provided with a spout to which a spout member 40 having a cross-shaped slit is attached at a position deviated from the central axis of the mouth portion 11 so that the pouring direction is slanted. Can be done. As described above, the cap 30 is not limited in its mode as long as the spout can be provided, and the cap 30 can be designed in various ways.

It is also possible to rotate the cap 30 in the opening direction and remove it from the mouth portion 11 to pour out the contents. As a result, an opening larger than that of the spout 36 can be obtained, and a large amount of contents can be poured in a short time.

FIGS. 5A and 5B show the mouth portion 11, the side wall 31 of the cap 30, and a part of the internal screw 37 transparently and schematically. The side wall 31 is provided with a recess in the vicinity of the tip of the internal screw 37 in the middle of the thread, in which the height of the thread is lower than that of other portions. The recess is formed, for example, by not providing a thread. A first rib 13 and a second rib 14 are formed in the mouth portion 11 between the threads of the external screw 12.

In the state shown in FIG. 5A, the concave portion engages with the first rib 13 to restrict the rotation of the cap 30 to a certain extent. That is, a certain amount of rotational torque or more is required to disengage this engagement. This state corresponds to the state of (a) in FIG. In this state, the spout structure is in an unused state in which the cap is not opened, and for example, transportation, sales, and the like can be performed in this state.

Further, in the state shown in FIG. 5B, the concave portion engages with the second rib 14 to restrict the rotation of the cap 30 to a certain extent. That is, a certain amount of rotational torque or more is required to disengage this engagement. This state corresponds to the state of (b) in FIG. In this state, the spout structure is in a used state with the cap opened. For example, in this state, the user can continue to use it. In this way, by restricting the rotation to a certain extent in the unused state and the used state, it is possible to suppress the unintended rotation of the cap 30. Further, by restricting the rotation to a certain extent in the use state, it is possible to detect the completion of the rotation operation when the user performs the rotation operation in the closing direction for opening the cap, and the cap in the use state. Looseness can be suppressed.

It is preferable that the first rib 13 and the second rib 14 are provided at positions where they overlap each other when viewed from the central axis direction of the mouth portion 11. As a result, the orientation of the cap 30 with respect to the container body 10 along the rotation direction is the same at the time of display at the store and at the time of use. Therefore, when the cap 30 has a hinge 33, a spout 36 at an oblique position, and the like, and the shape and function have a direction for ease of use, even if the cap 30 is in an unused state at the time of display at the store, it is in a used state. The orientation of the cap 30 can be presented to the user to appeal the ease of use.

FIG. 5 (c) schematically shows a side view of the cap 30 as seen from the direction of the arrow in FIG. 5 (a). In the example shown in FIG. 5 (c), the side wall 31 of the cap 30 slides in one or two places separated by about 90 ° in the rotation direction of the cap 30 from the position where the recess of the internal screw 37 is formed. The stopper is processed. As a result, when the user rotates the cap 30, the concave portion of the internal screw 37 and the engagement portion between the first rib 13 or the second rib 14 are not pressed by inducing the user to pinch the non-slip processing position. It is possible to prevent the force for disengagement from becoming unnecessarily large. The mode of anti-slip processing is not limited, and the lid 34 may also be anti-slip processed.

Further, as shown in FIG. 6, a band 38 may be separably provided on the side wall 31 of the cap 30 at the opposite end of the top plate 32. In this case, in the unopened state, the band 38 abuts on the pedestal 15 of the mouth portion 11 shown in FIG. 1, and the rotation operation of the cap 30 in the closing direction is restricted as an unused state in which the cap 30 is not opened. .. For example, in this state, transportation, sales, and the like can be performed. When the band 38 is separated from the side wall 31, the cap 30 can be rotated in the closing direction. When the cap 30 is opened by the rotation operation and the end portion of the cap 30 comes into contact with the pedestal 15, the rotation operation in the closing direction is completed, and the user can detect that the partition wall 22 of the inner plug 20 is broken. For example, the user can continue to use this state as the usage state.

In this way, by suppressing the movement of the cap 30 to a certain extent between the unopened state and the opened state, it is possible to suppress unintentional breakage of the inner plug 20 and loosening of the cap 30. Further, when the band 38 is provided, it can be indicated that the band 38 has not been opened because the band 38 is not separated.

Due to the rotation operation of the cap 30 in the closing direction, the rotational torque of the cap 30 and the pressing force due to the cap 30 approaching the mouth portion 11 side are transferred from the top plate 32 to the partition wall 22 via the protrusion 35. It is transmitted and acts as a breaking force. Since the breakage of the partition wall 22 gradually progresses as the protrusion 35 moves due to the rotation of the cap 30, the peak rotation torque can be suppressed compared to the completion of the breakage in a short time, and even a weak user can easily perform the rotation operation. It will be possible.

In the unused state, it is preferable that the protrusion 35 and the partition wall 22 are not in contact with each other. In this case, contact occurs as the rotation operation progresses. At this time, since the user can get a feeling of contact, he / she can suitably feel the start and progress of opening the cap along with the fluctuation of the force required for the subsequent rotation operation, and the cap has not been opened. You can eliminate the anxiety that it may be.

As described above, in the spout structure according to the present invention, the contents that have passed through the opening formed in the inner plug 20 can be further passed through the spout 36 provided in the cap 30 to be dispensed. It is possible to improve various conveniences such as easy design of pouring speed and pouring direction. It should be noted that each feature in the above-described embodiment can be omitted, changed, or combined as appropriate. For example, when the above-mentioned band 38 is provided on the cap 30, each of the cap 30 and the mouth portion 11 is provided with a ridge or the like that overcomes and engages with each other instead of a screw thread, and the band 38 is removed to attach the cap 30. It may be possible to open and engage by pushing in without rotating.

The present invention is useful for the spout structure of a packaging container.

10 Container body 11 Mouth 12 External screw 13 1st rib 14 2nd rib 15 Pedestal 20 Inner plug 21 Fitting part 22 Partition wall 23 Circular member 30 Cap 31 Side wall 32 Top plate 33 Hinge 34 Lid 35 Protrusion part 36 Injection port 37 Internal screw 38 Band 39 Communication hole 40 Injection member

Claims (5)

The mouth where the external screw is formed and
An inner plug including a partition wall that closes the open end of the mouth, and
A side wall on which an internal screw is formed, a top plate having a spout, and a protrusion protruding from the outer periphery of the spout of the top plate toward the partition and having a communication hole, the mouth and the inner plug. With a cap that is placed on the mouth and screwed into the mouth
A spout structure in which the protrusion breaks the partition wall by the rotation operation of the cap in the closing direction, and the contents can pass through the communication hole and the spout so that the spout can be opened. The spout structure according to claim 1, wherein the cap further includes a lid that can open and close the spout. The side wall is provided with a recess in the middle of the thread of the internal screw whose thread height is lower than that of other portions.
The mouth has a first rib between the threads of the external screw that engages with the recess in an unopened state and restricts the rotation of the cap to a certain extent as an unused state, and the cap is closed. A second rib that engages with the concave portion in a state of being opened by a rotational operation and restricts the rotation of the cap to a certain extent is provided as a used state.
The spout structure according to claim 1 or 2, wherein the first rib and the second rib are provided at positions where they overlap each other when viewed from the central axis direction of the mouth portion. A pedestal is provided at the mouth portion, and the pedestal is provided.
Bands are separably provided on the side wall.
In the unopened state, the band comes into contact with the pedestal, and the rotation operation of the cap in the closing direction is restricted as an unused state.
The separation of the band enables the rotation operation of the cap in the closing direction, and when the side wall abuts on the pedestal, the rotation operation in the closing direction is completed and the partition wall is broken and ready for use. The spout structure according to any one of claims 1 to 3. The spout structure according to claim 3 or 4, wherein the protrusion and the partition wall are not in contact with each other in the unused state.

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