JP2022084267A - One-piece cap - Google Patents

Abstract

To make it as such in a one-piece cap consisting of a cap body and an upper lid hinged to the cap body that when the upper lid is opened to take out contents, at the same time the upper lid is turned in a lid closing direction, rotation in a lid opening direction is firmly suppressed, and a feeling of click is provided.SOLUTION: In a one-piece cap having a tubular wall 1 constituting a cap body and an upper lid 3 hinged to the cap body 1 by a strap band 5, the upper lid 3 has a top wall 25 and a skirt wall 27 descending from the periphery of the top wall 25, between the tubular wall 1 and the upper lid 3, when the upper lid 3 is closed, it is in an unlocked state, while an engagement mechanism is provided so that when the upper lid 3 is opened by turning via the strap band 5, a locked state is formed that suppresses turning of the upper lid 3 in a lid opening direction and a lid closing direction.SELECTED DRAWING: Figure 5

Description

The present invention relates to a one-piece cap attached to the mouth of a container.

The one-piece cap, which consists of a hollow cylindrical cap body that is attached to the container mouth by screw engagement or fitting, and an upper lid that is hinged to the cap body, contains various contents such as beverages and pharmaceuticals. Widely used as a cap for contained containers.

Since the upper lid of this type of one-piece cap is hinged to the cap body, it can be opened and closed by turning the upper lid. Therefore, when the upper lid is swiveled in the opening direction to take out the contents, it is necessary to hold the opened upper lid so as not to close.

As a means for maintaining the open state of the upper lid, in the one-piece cap of Patent Document 1, a locking piece 4 extending downward from the outer surface of the skirt wall of the upper lid is provided in the vicinity of the hinge band 3 in the vicinity of the hinge band of the upper lid. ing. That is, when the upper lid is opened to some extent, the locking piece 4 gets over the peripheral edge of the upper end of the cap body, so that the upper lid is prevented from turning in the closing direction.

Further, Patent Document 2 also discloses a one-piece cap. In this one-piece cap, a locking piece 16 extending downward from the lower end of the skirt wall of the upper lid is located near the hinge band 13 of the upper lid. It is provided. That is, in Patent Document 2, when the upper lid is opened to some extent, the locking piece 16 is inverted and comes into contact with the outer surface of the container mouth portion, and as a result, the rotation of the upper lid in the closing direction is suppressed. There is.

In both Patent Documents 1 and 2, when the upper lid is opened and the contents are taken out, the upper lid does not rotate in the closing direction, so that the upper lid does not get in the way and the contents are taken out. You can do it.

However, although the one-piece caps of Patent Documents 1 and 2 both prevent the upper lid from turning in the closing direction, they allow the upper lid to turn in the opening direction. Therefore, no click feeling is generated when the upper lid is opened. Further, since all of these one-piece caps have a form of being molded in an opened state, a large-area molding die must be used, and the yield per site area ( There is a problem that the pot yield) is low.

Further, Patent Document 3 discloses a two-piece cap including a container body 10 attached to the container mouth and a cap body 4 detachably screwed to the container body 10, although it is not a one-piece cap. The cap body 4 is rotatably provided on the ring body 2 which is rotatably removed from the outside of the container body 10 via a connecting piece 3 (hinge band). In this two-piece cap, when the contents are taken out, the cap body 4 is rotated and raised, then swiveled around the connecting piece (hinge band) as a fulcrum, and then the contents are taken out through the take-out port formed in the container body 10. It is a thing to take out. In such a two-piece cap, an engaging piece 47 extending downward is provided in the vicinity of the connecting piece 3 (hinge band) of the cap body 4, and when the cap body 4 is opened, this engagement piece 47 is provided. The unit 47 engages with the screw protrusion provided on the container body 10, and as a result, the rotation of the cap body 4 in the closing direction is suppressed, and the cap body 4 does not get in the way and the contents are contained. It is possible to take out.

In the two-piece cap of Patent Document 3, the cap body 4 has the same function as the upper lid of the one-piece cap, and when the cap body 4 is opened and the contents are taken out, the engaging piece 47 is used. Since it engages with the screw protrusion of the container body 10, the cap body 4 is prevented from turning in the closing direction as well as in the opening direction, and can give a certain degree of click feeling. However, since the engaging piece 47 is engaged with the screw protrusion and is not a member formed as an engaging mechanism for preventing the cap body 4 from turning, the height of the protrusion is not so high. The distance between the protrusions (pitch) becomes "play", and the engaging force with the engaging piece 47 is not sufficient, so that a click feeling cannot be obtained so much. Further, since the cap body 4 is formed separately from the container body 10 and is molded with the cap body 4 opened with respect to the ring body 2, a large-area molding die is still required. turn into.

Gazette No. 57-39330 Jikkensho No. 54-34843 Japanese Unexamined Patent Publication No. 2013-230823

Therefore, an object of the present invention is that in a one-piece cap consisting of a cap body and an upper lid hinged to the cap body, when the upper lid is opened when the contents are taken out, the upper lid is swiveled in the closing direction at the same time. It is an object of the present invention to provide a one-piece cap that can give a click feeling by firmly suppressing further turning in the opening direction.
Another object of the present invention is to provide a one-piece cap that can be molded with the top lid closed.

According to the present invention, in a one-piece cap provided with a cap body having a cylindrical wall and fixed to a container mouth portion, and an upper lid hinged to the cap body by a strap band.
The top lid has a top wall and a skirt wall descending from the periphery of the top wall.
A locking state is formed between the cap body and the upper lid to prevent the upper lid from turning in the opening direction and the closing direction when the upper lid is opened by the rotation by the strap band. A combination mechanism is provided,
The engaging mechanism includes an engaging portion formed on the tubular wall side of the cap body and an engaging piece formed on the skirt wall side of the upper lid.
The engaging piece extends upward at a distance from the outer surface of the skirt wall.
A one-piece cap featuring the above is provided.

In the one-piece cap of the present invention, the following aspects are preferably adopted.
(1) The engaging portion formed on the tubular wall side of the cap body is the upper end portion of the tubular wall.
When the upper lid is opened, the upper end of the cylindrical wall, which is the engaging portion, enters the space between the engaging piece and the outer surface of the skirt wall, so that the upper lid is locked. That.
(2) The engaging piece has a base portion extending horizontally from the outer surface of the skirt wall of the upper lid and an acting portion extending upward from the base portion, and the acting portion is the cap body. A locked state is formed by overcoming the upper end of the tubular wall.
(3) The upper end portion of the tubular wall is formed with a first notched recess in which a part of the circumferential direction is cut out, and the first notched recess is a bottom wall portion and the bottom wall. It consists of both end portions rising from both ends of the portion, and the bottom wall portion is an upper end portion for locking the locking piece of the upper lid.
(4) One end of the strap band is connected to the bottom wall portion of the first notch recess, and the other end of the strap band is connected to the skirt wall of the upper lid.
(5) A second notch recess that can accommodate the skirt wall portion on the side that becomes the turning tip of the upper lid is formed in the portion of the cap body facing the first notch recess.
(6) An inner ring for sealing that engages with the upper end portion of the container mouth portion is formed on the inner surface of the top wall of the upper lid at a distance from the skirt wall.
(7) The strap band has a bent portion.

The one-piece cap of the present invention is in an unlocked state between the cap body (cylindrical wall) and the upper lid when the upper lid is closed, but when the upper lid is swiveled and opened, the cap is said to be in an unlocked state. An engaging mechanism for forming a locked state that suppresses turning of the upper lid in the opening direction and the closing direction is provided. That is, when the upper lid is swiveled in the opening direction to take out the contents, when it comes to a certain position, the upper lid is attached to the cap body so that the upper lid does not swivel not only in the closing direction but also in the opening direction. Will be engaged. Therefore, when such an engaging relationship occurs, a click feeling is generated.

Further, since the upper lid is hinged to the cap body (cylindrical wall) by the strap band, the degree of freedom of the upper lid is considerably high when the upper lid is swiveled in the opening direction. Utilizing this, even when an engaging piece having a portion extending horizontally or upward from the outer surface of the skirt wall of the upper lid is formed, the turning of the upper lid in the opening direction is hindered by the engaging piece. There is no such thing. That is, since the engaging mechanism can be provided by using such an engaging piece, in the present invention, the upper lid can be molded in a closed state. For example, in the conventionally known one-piece cap, since the engaging piece that controls the opening of the upper lid has a form extending downward from the skirt wall of the upper lid, it is molded only when the upper lid is open. I couldn't do it. As can be understood from this, the present invention has an advantage that the upper lid can be molded in a closed state, the mold area can be reduced, and the pot yield can be improved.

Furthermore, since the upper lid is swiveled by the strap band, the upper end of the cap body and the engaging piece of the upper lid can be securely engaged when the upper lid is opened, and the upper lid can be firmly held and closed. At the time of the lid, the upper lid can be securely fitted into the container mouth and can be reliably re-plugged.

The figure which shows the side surface cross section of the 1-piece cap of this invention in the state which is attached to the container mouth part together with the container mouth part. FIG. 3 is a perspective view of the one-piece cap of FIG. The rear view of the one-piece cap of FIG. A side view of the one-piece cap of FIG. The figure which shows the process of the opening operation of the 1 piece cap of FIG.

With reference to FIGS. 1 to 4, the one-piece cap A of the present invention is roughly composed of a cap body having a tubular wall 1 and an upper lid 3. That is, the cylindrical wall 1 functions as a cap body attached to the container mouth portion 100, and the upper lid 3 is hinged to the tubular wall 1 by a pair of strap bands 5 and 5.

First, the container mouth portion 100 will be described. A head portion 101 having an enlarged diameter outward is formed at the upper end of the mouth portion 100, and the outer surface of the mouth portion 100 is spaced from the head portion 101 to some extent. A thread 103 is formed in a portion located below, a jaw portion 105 having an enlarged diameter is formed below the thread 103, and a large-diameter support ring 107 is formed at the lowermost portion for transportation or the like. It is formed (see FIG. 1). As can be understood from FIG. 1, the one-piece cap A of the present invention is used by being attached to a portion of the container mouth portion 100 above the support ring 107.

In this one-piece cap A, a thread 11 that engages with a thread 103 formed on the outer surface of the container mouth portion 100 is formed on the inner surface of the tubular wall 1 that is the cap body, and the thread 103 is formed. The cap body (cylindrical wall 1) is fixed to the container mouth 100 by the screw engagement between the screw and the screw 11.

Further, an opening history explicit band (TE band) 15 is provided at the lower end of the tubular wall 1 via a breakable bridge 13, and an undercut 17 is formed on the inner surface of the TE band 15. In a state where the cap body 1 is attached to the container mouth 100, the undercut 17 and the jaw 105 provided on the container mouth 100 are engaged with each other so that the raising of the cap body 1 is restricted. It is configured in. That is, when the tubular wall 1 (cap body) attached to the container opening 100 is rotated in the lid opening direction by screw engagement, the tubular wall 1 rises along the outer surface of the container opening 100. , The rise of the TE band 15 is blocked by the engagement of the undercut 17 with the jaw 105. As a result, when the tubular wall 1 (cap body) is removed from the container mouth 100, the TE band 15 is separated from the tubular wall 1. As can be understood from this, the fact that the TE band 15 is separated from the tubular wall 1 indicates the opening history that the cap body has been removed from the container mouth 100, thereby replacing the contents. It is possible to prevent fraud such as.

Further, on the outer surface of the tubular wall 1, a knurl 19 extending in the cap height direction is formed except for a part of the region (see FIGS. 2 to 4), whereby the rotation of the tubular wall 1 is performed. The work can be done easily.

In particular, as clearly shown in the rear view of FIG. 3, a protrusion 21 projecting downward is provided on the lower end surface of the tubular wall 1, and a protrusion 21 is provided on the upper end surface of the TE band 15. An engaging recess 23 for receiving 21 is provided. As is clear from FIG. 3, these protrusions 21 and recesses 23 have an upright surface on the lid closing direction side and an inclined surface on the lid opening direction side. That is, when the one-piece cap A (cap body) is molded and then put on the container mouth 100 and rotated in the closing direction, the upright surface of the protrusion 21 is firmly engaged with the upright surface of the engaging recess 23. Therefore, since the TE band 15 is integrated with the cap body 1 and rotates in the closing direction, the cap body (1 piece cap A) can be attached to the container mouth 100 without any problem.
Further, when the cylindrical wall 1 (cap body) mounted on the container mouth 100 is rotated in the lid opening direction, the protrusion 21 and the inclined surface of the engaging recess 23 engage with each other, so that the tubular wall 1 is formed. The TE band 15 receives an upward stress from the TE band 15, and the TE band 15 receives a downward stress from the cylindrical wall 1. As a result, a stress for breaking the bridge 13 is generated, and the cylindrical wall 1 can be rapidly raised. can.

Further, the upper end of the tubular wall 1 is partially cut out in the circumferential direction, and a first notched recess X and a second notched recess Y are formed. The functions of these notched recesses X and Y will be described later.

In the present invention, the upper lid 3 has a top wall 25 and a skirt wall 27 descending from the peripheral edge of the top wall 25. The skirt wall 27 of the upper lid 3 and the tubular wall 1 (cap body) are hinged to each other by a pair of strap bands 5, 5, and therefore, the upper lid 3 is swiveled around the strap bands 5, 5 as a fulcrum. It can be opened and closed. On the other hand, on the inner surface of the top wall 25 of the upper lid 3, a sealing inner ring 29 that engages with the head 101 at the upper end of the container mouth 100 is provided at a distance from the skirt wall 27. As shown in FIG. 1, good sealing performance is ensured by fitting the head 101 of the container mouth portion 100 into the space between the inner ring 29 and the skirt wall 27.

Further, on the inner surface of the skirt-shaped wall 27, two peripheral protrusions 29a and 29b are formed vertically apart from each other. That is, when the cap body 1 having the TE band 15 is attached to the container mouth portion, the head 101 at the upper end of the container mouth portion 100 deeply penetrates into the space between the inner ring 29 and the skirt wall 27. However, it is located above the upper peripheral protrusion 29a, and the upper lid 3 is firmly fixed by the engagement between the peripheral protrusion 29a and the head 101. In such a state, when the upper lid 3 is swiveled and raised in the lid opening direction, the TE band 15 is separated, and the head 101 of the container mouth portion 100 gets over the circumferential protrusion 29a and is above the peripheral protrusion 29b. It is located, which makes it easier to move the upper lid 3 upward to perform turning work.
As shown in FIG. 3, it is preferable that the upper end surface of the cap body 1 and the lower end surface of the skirt wall 27 of the upper lid 3 are connected by a small protrusion 30. That is, the small protrusions 30 are easily broken, but such small protrusions 30 can prevent the inconvenience that the upper lid 3 is accidentally opened during storage, transportation, and the like of the cap A. can.

In the above-mentioned basic structure, a part of the upper end of the tubular wall 1 (cap body) in the circumferential direction is cut out to form a first recess X, and strap bands 5 and 5 are formed in this recess X. The other ends of the strap bands 5 and 5 are connected to the outer surface of the skirt wall 27.

The first notch recess X formed at the upper end of the tubular wall 1 is formed of a bottom wall portion X1 having a short height and side wall portions X2 and X2 rising from both side ends thereof. , Has a rectangular shape as a whole. One end of the strap bands 5 and 5 is connected to the upper end surface of the bottom wall portion X1 of the first notch recess, and the other end is connected to the lower end portion of the outer surface of the skirt wall 27 of the upper lid 3. ..

In the present invention, as shown in FIG. 3, the strap bands 5 and 5 are not in a linear shape but in a bent and deformable shape, and the upper lid 3 (skirt wall 27) and the cap body 1 (recessed portion). It is connected to the bottom wall portion X1) at X. By connecting in such a shape, the strap bands 5 and 5 are elastically deformed, so that the position of the upper lid 3 can be adjusted during turning, and the locking piece 31, which will be described later, is securely fitted into the upper end portion 33. Further, even when the upper lid 3 is closed, the head 101 of the container mouth portion 100 is securely fitted between the skirt wall 27 and the inner ring 29.

Although the slap bands 5 are provided in pairs (two) as shown in the figure, they may be one. However, since the strap band 5 has a deformable form, if one strap band 5 is used, the rotation of the upper lid 3 may become unstable. Therefore, as shown in the figure, it is preferable to provide the pair of strap bands 5 and 5 at appropriate intervals in order to stably rotate the upper lid 3.

In the present invention, when the upper lid 3 is opened by turning around the strap bands 5 and 5 as a fulcrum, an engaging mechanism is provided in order to stably maintain the opened state of the upper lid 3. As such an engaging mechanism, a locking piece 31 is provided on the outer surface of the lower end of the skirt wall 27 of the upper lid 3 corresponding to the recess X of the cap body 1. To be precise, the locking piece 31 is arranged at a position between the pair of strap bands 5 and 5, and when the upper lid 3 is swiveled and opened, the locking piece 31 has flexibility. The upper end portion of the cap body 1, specifically, the upper end portion 33 of the central portion of the bottom wall portion X1 of the recess X is overcome and locked. That is, the engaging mechanism is composed of the locking piece 31 and the upper end portion 33. The upper end portion 33 is an engaging portion that engages with the locking piece 31.
According to such an engaging mechanism, when the locking piece 31 engages with the upper end portion 33 and is locked, the locking piece 31 surely gets over the upper end portion 33, and the upper lid 3 is attached to the cap body 1. On the other hand, since it is fixed at a predetermined angle, a high click feeling can be obtained.

The form of the locking piece 31 as described above is not particularly limited, but a closed space is not formed so that the upper lid 3 can be formed in a closed form with respect to the cap body (cylindrical wall 1). Should be in form. For example, as shown in the enlarged cross-sectional view of the locking piece 31 in FIG. 1, the locking piece 31 has a base portion 31a extending in the horizontal direction and an acting portion extending upward from the tip of the base portion 31a. It is composed of 31b and has an L-shaped shape as a whole.

The upper lid 3 for taking out the contents is swiveled in the opening direction and locked and fixed by the procedure shown in FIG.

First, the one-piece cap A attached to the container mouth 100 is provided with the TE band 15. By rotating the cap body 1 in the opening direction, the cap body 1 rises, but the TE band 15 is , The undercut 17 and the jaw 105 are engaged with each other, so that the ascent is limited. Therefore, at the same time that the TE band 15 is separated from the cap body 1, the head 101 of the container mouth 100 is between the peripheral protrusions 29a and 29b on the inner surface of the skirt wall 27 of the upper lid 3, as described above. (See FIG. 5 (a)).

Then, while lifting the upper lid 3 upward, the upper lid 3 is swiveled in the opening direction (see FIG. 5 (b)). That is, since the upper lid 3 is connected to the cap main body 1 by the deformable strap bands 5 and 5, the upper lid 3 can be easily lifted upward and swiveled. When the upper lid 3 is swiveled in the opening direction in this way, the acting portion 31b of the locking piece 31 of the upper lid 3 comes into contact with the outer wall surface 33a of the upper end portion 33 on the cap body 1 side.

If the upper lid 3 has no degree of freedom, the rotation of the upper lid 3 is restricted in the above state, but in the present invention, the upper lid 3 and the cap body 1 are connected by the deformable strap bands 5 and 5. Therefore, by moving the upper lid 3 slightly upward, the acting portion 31b of the locking piece 31 gets over the upper end portion 33. In this case, as shown in FIGS. 1 and 5A, by making the upper end of the outer wall surface 33a an inclined surface 33b, the locking piece 31 of the upper lid 3 is swiveled in the opening direction. The working portion 31b moves along the inclined surface 33b and smoothly gets over the upper end portion 33.

When the upper lid 3 is swiveled in the opening direction as described above and the acting portion 31b of the locking piece 31 gets over the upper end portion 33, the space between the acting portion 31b of the locking piece 31 and the outer surface of the skirt wall 27 is narrow. The upper end 33 of the tubular wall 1 will enter the space (see FIG. 5 (c)).

That is, the upper lid 3 is fixed at a predetermined angle at the moment when the upper end portion 33 of the tubular wall 1 enters between the acting portion 31b of the locking piece 31 and the outer surface of the skirt wall 27. Therefore, in the present invention, a high click feeling can be obtained.

As can be understood from the above description, it is essential that the width of the space between the acting portion 31b of the locking piece 31 and the outer surface of the skirt wall 27 is narrow in order to obtain a click feeling. If the width of this space is wide, the upper lid 3 will rattle, the position will not be fixed stably (that is, the locking is insufficient), and a sufficient click feeling cannot be obtained. Therefore, the length of the base portion 31a of the locking piece 31 may be set to such a size that such a click feeling can be obtained. In the case of 0.8 mm, the length d of the base 31a (see FIG. 1) may be about 0.4 to 1.0 mm.

Further, the length of the acting portion 31b of the locking piece 31 is not particularly limited as long as the acting portion 31b is long enough to get over the upper end portion 33.
Further, the shape of the working portion 31b may be determined in consideration of the die-cutting property at the time of molding. For example, the outer surface is preferably an upright surface or a surface close to an upright surface, and the inner surface of the acting portion 31b is a surface. It is also preferable to make the inclined surface wide on the tip end side from the viewpoint of making it easier to get over the upper end portion 33.

In the above-mentioned one-piece cap A, for example, there is no member that covers the outer surface of the tubular wall 1 (cap body), and further, the upper lid 3 is also a member that covers the outer surface of the skirt wall 27 and makes it difficult to die-cut. There is a big advantage that the upper lid 3 can be molded in a closed form because it is not provided. That is, the area of the molding die can be reduced and the production efficiency can be improved.

Therefore, in the one-piece cap A of the present invention, various embodiments can be adopted in consideration of the fact that the closed upper lid 3 is stably held and the appearance is not impaired. The shape should be such that it can be easily molded by die-cutting property after molding and post-processing such as cutting after molding.

For example, in the cap body 1, it is preferable to form a second notch recess Y in a portion opposite to the above-mentioned first notch recess X. That is, the first notch recess X is a portion where the strap bands 5 and 5 are provided and is on the fulcrum side of the swivel of the upper lid 3, but this recess Y is a portion on the tip end side of the swivel of the upper lid 3. be. By forming the recess Y in this portion, the length of the skirt wall 27a on the turning tip side can be lengthened, and the closed upper lid 3 can be stably held.

Further, it is preferable to form an arc-shaped flange 41 on the peripheral edge of the top wall 25 of the upper lid 3 so as to hide the upper end surface of the cap body 1, which can facilitate the opening operation of the upper lid 3. ..
Further, in order to increase the strength of the cap body 1, arcuate flanges 43a and 43b are formed at the lower ends of the skirt wall 17 along the upper end surface of the upper end of the cap body 1 and further face both side portions of the recess Y. As such, it is preferable to form the upright guides 45, 45 on the skirt wall 27.

The one-piece cap A of the present invention having the above-mentioned form is in a state where the upper lid 3 is closed by thermoforming such as injection molding and compression molding using various thermoplastics (for example, olefin resins such as polyethylene and polypropylene). It is molded.

1: Cap body 3: Top lid 5: Strap band 11: Thread 15: TE band 25: Top wall 27: Skirt wall 31: Locking piece 31a: Base 31b: Working part X: First notch recess X1: Bottom Wall part X2: Side wall part 33: Upper end part Y: Second notch recess A: 1 piece cap

Claims (8)

In a one-piece cap having a tubular wall and a cap body fixed to the container mouth, and an upper lid hinged to the cap body by a strap band.
The top lid has a top wall and a skirt wall descending from the periphery of the top wall.
A locking state is formed between the cap body and the upper lid to prevent the upper lid from turning in the opening direction and the closing direction when the upper lid is opened by the rotation by the strap band. A combination mechanism is provided,
The engaging mechanism includes an engaging portion formed on the tubular wall side of the cap body and an engaging piece formed on the skirt wall side of the upper lid.
The engaging piece extends upward at a distance from the outer surface of the skirt wall.
A one-piece cap featuring. The engaging portion formed on the tubular wall side of the cap body is the upper end portion of the tubular wall.
When the upper lid is opened, the upper end of the tubular wall, which is the engaging portion, enters the space between the engaging piece and the outer surface of the skirt wall, so that the upper lid is locked. The one-piece cap according to claim 1. The engaging piece has a base extending horizontally from the outer surface of the skirt wall of the upper lid and an acting portion extending upward from the base, and the acting portion is a tubular wall of the cap body. The one-piece cap according to claim 2, wherein a locked state is formed by overcoming the upper end portion of the cap. The upper end portion of the tubular wall is formed with a first notched recess in which a part of the circumferential direction is cut out, and the first notched recess is formed in the bottom wall portion and both ends of the bottom wall portion. The one-piece cap according to claim 2 or 3, wherein the bottom wall portion is an upper end portion for locking the locking piece of the upper lid. The one piece according to claim 4, wherein one end of the strap band is connected to the bottom wall portion of the first notch recess, and the other end of the strap band is connected to the skirt wall of the upper lid. cap. 4. 1 piece cap described in. The invention according to any one of claims 1 to 6, wherein a sealing inner ring that engages with the upper end portion of the container mouth portion is formed on the inner surface of the top wall of the upper lid at a distance from the skirt wall. 1 piece cap. The one-piece cap according to any one of claims 1 to 7, wherein the strap band has a bent portion.

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