Caps and how to attach them

Abstract

To provide a cap in which a second engagement part is surely engaged with a first engagement part when opening from an unopened state after being mounted on a container.SOLUTION: A cap body 5 is provided with a lid 7. The cap body 5 includes a cylindrical peripheral wall 10, which is externally fittable to a mouth part 3 of a container 2. The cylindrical peripheral wall 10 is provided with a first engagement part 41. A seal body 42 for discriminating presence / absence of fraudulent opening is provided on a weakened part 49 on the lid 7. A pocket 54 receiving the seal body 42 separated from the lid 7 when the weakened part 49 is broken is provided at the cap body 5. Between the peripheral wall 10 and the pocket 54, a storage space 55 is formed capable of receiving the seal body 42. A gap 56 communicating with the storage space 55 is formed between the first engagement part 41 and the pocket 54. The seal body 42 has a second engagement part 46 which can be engaged with the first engagement part 41. In the case that the cap body 5 is not mounted on the container 2, the gap 56 allows the second engagement part 46 to pass therethrough, and in the case that the cap body 5 is mounted on the container 2, the gap 56 is reduced in a radial direction so as to inhibit the second engagement part 46 from passing therethrough.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention provides a cap having a function for detecting whether or not a product has been tampered with. and how to attach the cap Regarding. [Background technology]

[0002] Conventionally, as shown in Figures 13 to 15, there is a cap of this type that has a cap body 103 that is attached to a mouth 102 of a container 101, and a lid 104 that is placed on the cap body 103. The lid 104 has an easily severable weakened portion 106 that is connected to the underside of the body 105, and a confirmation protrusion 109 that is connected to the weakened portion 106. The confirmation protrusion 109 has an engaging step 112 and an inclined surface 113.

[0003] The cap body 103 comprises a disk-shaped top surface 107, a cylindrical screw-type portion 108 that hangs down from the underside of the top surface 107, a concave storage space 115 that houses the confirmation protrusion 109, an engagement portion 118 that engages with the confirmation protrusion 109 in the storage space 115, and a window portion 121 that allows the interior of the storage space 115 to be seen.

[0004] A gap 116 communicating with the accommodation space 115 is formed between the engaging portion 118 and the upper outer periphery 108 a of the screw-engaging portion 108 .

[0005] According to this, after the cap 100 is manufactured by resin molding or the like, when the lid 104 is closed, as shown in Figures 13 and 14, the confirmation protrusion 109 moves in the closing direction S, and the engagement step portion 112 passes through the gap 116 and is inserted into the storage space 115.

[0006] At this time, the inclined surface 113 of the confirmation protrusion 109 is exposed to the entire window portion 121, and by visually checking the inclined surface 113 of the confirmation protrusion 109 through the window portion 121, it can be determined that the lid 104 is closed and remains unopened.

[0007] In this unopened state, the cap 100 is attached to the container 101 by screwing the opening 102 of the container 101 into the screwing portion 108 of the cap body 103, as shown by the imaginary lines in FIG.

[0008] When the cap 100 is subsequently opened, the lid 104 is rotated in the opening direction O, whereby the engagement step 112 of the confirmation protrusion 109 engages with the engagement portion 118 of the cap body 103 in the opening direction O, cutting the weakened portion 106. As a result, as shown in FIG. 15 , the confirmation protrusion 109 is separated from the body 105 of the lid 104, and the confirmation protrusion 109 falls a predetermined distance within the accommodation space 115. As a result, the position of the engagement step 112 of the confirmation protrusion 109 moves downward by that amount. Therefore, by visually checking the position of the engagement step 112 of the confirmation protrusion 109 through the window 121, it can be determined that the cap 100 has been opened. This makes it possible to know that the cap 100 has been tampered with if an unopened cap 100 is tampered with.

[0009] Such a cap 100 is described in, for example, Patent Document 1 below. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Patent Publication No. 2013-241200 Summary of the Invention [Problem to be solved by the invention]

[0011] However, in the above-mentioned conventional type, when the cap 100 is attached to the container 101 and then opened from an unopened state, the engagement step 112 of the confirmation protrusion 109 engages with the engagement portion 118 of the cap body 103 in the opening direction O, and the weakened portion 106 is cut.However, if the engagement between the engagement step 112 and the engagement portion 118 is insufficient, the engagement step 112 will come off the engagement portion 118 and pass through the gap 116 from within the storage space 115 to the outside of the storage space 115, which is a problem.

[0012] If such a problem occurs, even though the package has been opened, the weakened portion 106 will not be cut, and the confirmation projection 109 will not be separated from the body 105 of the lid 104, making it impossible to accurately determine whether or not the package has been tampered with.

[0013] The present invention provides a cap in which, after being attached to a container, when the cap is opened from an unopened state, the second engaging portion reliably engages with the first engaging portion, causing the weakened portion to break. and how to attach the cap The purpose is to provide. [Means for solving the problem]

[0014] In order to achieve the above object, the first invention provides a cap having a cap body attached to the mouth of a container and a lid attached to the cap body via a hinge so as to be able to be opened and closed freely, The cap body has a cylindrical peripheral wall that can be fitted onto the mouth of the container, A first engagement portion is provided on the outer side of the peripheral wall, The lid is provided with a seal for detecting whether or not there has been tampering, the closure has a second engagement portion and is connected to the lid via a breakable weakened portion; The capping position is set on the capping direction side of the first engagement portion, the second engaging portion is engageable with the first engaging portion in a direction from the closed position to the open position; a pocket is provided in the cap body to accommodate the sealing body separated from the lid when the weakened portion is broken; an accommodation space capable of accommodating a sealing body is formed between the peripheral wall and the pocket in the radial direction; a gap communicating with the accommodation space is formed between the first engagement portion and the pocket in the radial direction; the first engagement portion and the pocket are disposed to face each other in the radial direction with a gap therebetween, When the cap body is not attached to the container, the gap allows the second engaging portion to pass through, When the cap body is attached to a container by fitting the peripheral wall of the cap body over the mouth of the container, the peripheral wall of the cap body bulges radially outward and the first engaging portion is displaced radially outward compared to when the cap body is not attached to the container, causing the gap to shrink radially and preventing the second engaging portion from passing through.

[0015] According to this, after the cap is manufactured, when the lid is closed without the cap body being attached to the container, the gap allows the second engaging portion to pass through, so that the second engaging portion passes through the gap in the closing direction and is inserted into the storage space.

[0016] In this unopened state, the cap is attached to the container by fitting the peripheral wall of the cap body onto the mouth of the container, which causes the peripheral wall of the cap body to bulge radially outward and displaces the first engaging portion radially outward, thereby reducing the gap in the radial direction.

[0017] When the cap is subsequently opened, the second engaging portion engages with the first engaging portion in the opening direction from the closed position by rotating the lid in the opening direction. At this time, the gap has narrowed in the radial direction, so the second engaging portion cannot pass through the gap in the opening direction from the closed position.

[0018] This allows the second engaging portion to reliably engage with the first engaging portion in the opening direction, breaking the weakened portion and separating the seal from the lid and storing it in the pocket. This makes it possible to determine that the cap has been opened, and if an unopened cap is tampered with, it can be accurately determined that it has been tampered with.

[0019] In the cap according to the second aspect of the present invention, a guide portion for guiding the second engaging portion into the gap in the closing direction is formed on the opening direction side of the first engaging portion.

[0020] According to this, after the cap is manufactured, when the lid is closed without the cap body being attached to the container, the second engagement portion is guided into the gap by the guide portion, so that it passes through the gap smoothly and reliably in the closing direction and is inserted into the storage space.

[0021] In the cap of the third invention, the sealing body has a third engaging portion, When the weakened portion is broken and the sealing body is separated from the lid and stored in the pocket, the third engaging portion engages with the first engaging portion from above in the dropping direction.

[0022] With this, the third engaging portion engages with the first engaging portion, so that the sealing body separated from the lid is stored in the pocket without falling off the cap, and therefore the sealing body does not become waste apart from the cap.

[0023] In this way, the first engaging portion is used to prevent the sealing body from falling off in addition to breaking the weakened portion, so the number of engaging portions can be reduced.

[0024] In the cap of the fourth invention, the sealing body has a pair of vertical bands provided at a predetermined interval in the circumferential direction of the lid, The second engagement portion is a lower horizontal band provided between the lower portions of the pair of vertical bands, The third engagement portion is an upper horizontal band provided between the upper portions of the pair of vertical bands, an opening surrounded by a pair of vertical bands, a lower horizontal band, and an upper horizontal band is formed in the sealing body; The first engagement portion projects from the outer surface of the peripheral wall into the opening of the sealing body.

[0025] According to this, when opening a cap attached to a container in an unopened state, the lid is rotated in the opening direction, causing the lower horizontal band to engage with the first engagement portion and the weakened portion to break, so that the sealing body is separated from the lid and stored in the pocket, and the upper horizontal band engages with the first engagement portion.

[0026] The cap according to the fifth aspect of the present invention has a first window formed in the pocket, through which the sealing body connected to the lid via the weakened portion is exposed in the closed state.

[0027] This allows the seal connected to the lid to be visually recognized through the first window, making it possible to determine whether the cap is unopened.

[0028] In the cap according to the sixth aspect of the present invention, a second window is formed in the pocket to expose the sealing body when the weakened portion is broken and separated from the lid.

[0029] According to this, by visually checking the sealing body separated from the lid through the second window, it is possible to determine that the cap has already been opened. The seventh invention is a method for attaching a cap according to any one of the first to sixth inventions to a mouth of a container, comprising: The cap is made with the lid open. By closing the lid before attaching the cap body to the opening of the container, the second engaging portion passes through the gap in the closing direction and is inserted into the storage space, When the lid is closed, the peripheral wall of the cap body is fitted over the mouth of the container and the cap body is attached to the container, causing the peripheral wall of the cap body to bulge radially outward and the first engaging portion to be displaced radially outward, thereby reducing the gap radially and preventing the second engaging portion inserted into the storage space from passing through the gap in the opening direction from the closing position. [Effects of the Invention]

[0030] As described above, according to the present invention, after the cap is attached to the container, when the container is opened from an unopened state, the second engaging portion reliably engages with the first engaging portion, thereby preventing the weakened portion from breaking and the sealing body remaining connected to the lid when the container is opened from an unopened state. [Brief explanation of the drawings]

[0031] [Figure 1] 1 is a cross-sectional view of a cap according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a view taken along the arrow XX in FIG. [Figure 3] FIG. 10 is a cross-sectional view of the unopened cap of the first embodiment. [Figure 4] FIG. [Figure 5] FIG. 10 is a partially cutaway front view of the unopened cap of the first embodiment. [Figure 6]10 is an enlarged cross-sectional view of a portion of an unopened cap that is not attached to a container according to the first embodiment. FIG. [Figure 7] FIG. 10 is a partially enlarged cross-sectional view showing the state when the lid of the cap not attached to the container is being moved in the closing direction. [Figure 8] 10 is an enlarged cross-sectional view of a portion of the unopened cap attached to the container according to the first embodiment. FIG. [Figure 9] 10 is a partially enlarged cross-sectional view of the cap attached to the container and opened in accordance with the first embodiment. FIG. [Figure 10] FIG. 10 is a front view of the cap after it has been opened. [Figure 11] FIG. 10 is a front view of a cap according to a second embodiment of the present invention, showing an unopened state. [Figure 12] FIG. 10 is a front view of the cap in the same manner, showing the cap in an already opened state. [Figure 13] FIG. 1 is a cross-sectional view of a conventional unopened cap. [Figure 14] FIG. 10 is an enlarged cross-sectional view of a portion of the unopened cap of the same. [Figure 15] FIG. 10 is an enlarged cross-sectional view of a portion of the cap that has already been opened. DETAILED DESCRIPTION OF THE INVENTION

[0032] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0033] (First embodiment) In the first embodiment, as shown in Figures 1 to 4 and 8, reference numeral 1 denotes a synthetic resin cap that is attached to the mouth 3 of a container 2 such as a plastic bottle. The cap 1 has a cap body 5 and a lid 7 that is attached to the cap body 5 via a hinge 6 so as to be able to be opened and closed. The configuration of the cap 1 will be described below, with the direction of an axis 8 (see Figure 3) that passes through the center of the cap 1 when it is closed being defined as the up-down direction.

[0034] The cap body 5 has a cylindrical first peripheral wall 10 (an example of a peripheral wall) that can be fitted onto the mouth 3 of the container 2, a cylindrical second peripheral wall 11 formed radially inward from the first peripheral wall 11, an annular mounting groove 12 formed between the first peripheral wall 10 and the second peripheral wall 11, a top wall portion 13 formed inside the second peripheral wall 11, from the upper part of the first peripheral wall 10 through the upper part of the second peripheral wall 11, a circular pouring tube 14 provided on the top wall portion 13, a pouring plate 16 provided inside the pouring tube 14 and having a pouring outlet 15 formed therein, a circular flow rate adjustment plate 17 arranged above the pouring outlet 15, and a support portion 18 that supports the flow rate adjustment plate 17 from the pouring plate 16. The support portion 18 also has a plurality of openings 19 that communicate with the pouring outlet 15 and open laterally.

[0035] Furthermore, the pouring tube 14 has a plurality of air replacement holes 21. These air replacement holes 31 are holes that introduce air into the interior of the container 2 when liquid is poured from the interior of the container 2 through the pouring outlet 15 and the opening 19 of the support part 18.

[0036] The lid 7 has an outer lid portion 26 and an inner lid portion 27 provided within the outer lid portion 26. The outer lid portion 26 has a circular top plate portion 29 and a cylindrical skirt 30 hanging down from the outer peripheral edge of the top plate portion 29. A flange portion 31 is provided on the outside of the skirt portion 30 for hooking a finger when opening the container.

[0037] The inner lid portion 27 has an inner recess 33 that surrounds the flow rate adjusting plate 17 when the cap is closed, and an outer peripheral engaging portion 34 that engages with the dispensing tube 14. As a result, as shown in Figure 3, when the cap is closed, the lid 7 is positioned relative to the cap body 5, and the dispensing tube 14 is reliably sealed. 1 to 3 and 6, an engaging protrusion 41 (an example of a first engaging portion) that protrudes radially outward from the outer surface is provided on the first peripheral wall 10 of the cap body 5. The engaging protrusion 41 is located 180° opposite the hinge 6 with respect to the center of the cap body 5.

[0038] The lid 7 is also provided with a seal 42 for determining whether or not the lid has been tampered with. As shown in Figures 1 to 5, the seal 42 has a pair of vertical bands 44, 45 spaced a predetermined distance apart in the circumferential direction A of the lid 7, a lower horizontal band 46 (an example of a second engaging portion) provided between the lower parts of the vertical bands 44, 45, and an upper horizontal band 47 (an example of a third engaging portion) provided between the upper parts of the vertical bands 44, 45, and is connected to the lower part of the skirt portion 30 via breakable weakened portions 49, 50.

[0039] An opening 51 surrounded by a pair of vertical bands 44, 45, a lower horizontal band 46, and an upper horizontal band 47 is formed in the sealing body 42, and as shown in Figure 6, the engaging protrusion 41 protrudes into the opening 51 of the sealing body 42.

[0040] A capping position 53 is set on the capping direction S side (lower side) of the engaging protrusion 41, and the lower horizontal band 46 can engage with the engaging protrusion 41 from the capping position 53 in the capping opening direction O (upward).

[0041] Furthermore, a pocket 54 is provided in the first peripheral wall 10 of the cap body 5 to accommodate the sealing body 42 that has been separated from the lid 7 when both weakened portions 49, 50 have been broken. The pocket 54 is an arc-shaped member in a plan view, and both ends in the circumferential direction A are connected to the first peripheral wall 10.

[0042] An accommodation space 55 capable of accommodating the sealing body 42 is formed between the first peripheral wall 10 and the pocket 54 in the radial direction B. As shown in Fig. 6, the accommodation space 55 is open at the top and bottom, and a gap 56 communicating with the accommodation space 55 is formed between the engaging protrusion 41 and the pocket 54 in the radial direction B.

[0043] A guide portion 58 that guides the lower horizontal band 46 of the sealing body 42 into the gap 56 in the closing direction S (downward) is formed on the opening direction O side (upper side) of the engaging protrusion 41. The guide portion 58 is an inclined surface formed from the outer surface of the first peripheral wall 10 to the tip of the engaging protrusion 41 in the radial direction B.

[0044] 6 and 7, when the cap body 5 is not attached to the container 2, the gap 56 allows the lower horizontal band 46 of the sealing body 42 to pass through. That is, in this case, the gap 56 is set to be equal to or larger than the thickness T of the lower horizontal band 46, or just slightly smaller than the thickness T of the lower horizontal band 46 within a range that allows the lower horizontal band 46 to pass through.

[0045] 8, by fitting the first peripheral wall 10 of the cap body 5 onto the mouth 3 of the container 2, the mouth 3 of the container 2 is inserted into the mounting groove 12, and the cap body 5 is attached to the container 2. In this case, compared to when the cap body 5 is not attached to the container 2, the first peripheral wall 10 of the cap body 5 bulges outward in the radial direction C and the engaging protrusion 41 is displaced outward in the radial direction C, thereby reducing the gap 56 in the radial direction B and preventing the lower horizontal band 46 of the sealing body 42 from passing through. That is, in this case, the gap 56 is significantly smaller than the thickness T of the lower horizontal band 46.

[0046] As shown in FIG. 4, a first window 59 is formed in the upper part of the pocket 54, through which the seal 42, which is connected to the lid 7 via the weakened portions 49 and 50 in the closed state, is exposed. The operation of the above configuration will now be described.

[0047] 1 and 2, the cap 1 is manufactured by resin molding with the lid 7 in an open state. Then, as shown in FIGS. 3 to 6, when the lid 7 is closed without the cap body 5 attached to the container 2, the gap 56 allows the lower horizontal band 46 of the sealing body 42 to pass through, so the lower horizontal band 46 passes through the gap 56 in the closing direction S and is inserted into the storage space 55.

[0048] At this time, as shown in Figure 7, the lower horizontal band 46 is guided into the gap 56 while sliding against the guide portion 58, so that it passes through the gap 56 smoothly and reliably in the closing direction S and is inserted into the storage space 55 as shown in Figure 6.

[0049] In such an unopened state, as shown in FIG. 4, it is possible to determine that the cap 1 is unopened by visually checking the seal 42 connected to the lid 7 through the first window 59.

[0050] In this unopened state, as shown in Fig. 8, the first peripheral wall 10 of the cap body 5 is fitted onto the mouth 3 of the container 2, whereby the mouth 3 of the container 2 is inserted into the mounting groove 12 and the cap body 5 is attached to the container 2. As a result, the first peripheral wall 10 of the cap body 5 expands radially outward C, the engaging protrusion 41 is displaced radially outward C, and the gap 56 is reduced in the radial direction B.

[0051] Thereafter, when the cap 1 is opened, the lid 7 is rotated in the opening direction O, whereby the lower horizontal band 46 of the sealing body 42 engages with the engaging protrusion 41 from the closed position 53 in the opening direction O. At this time, since the gap 56 has narrowed in the radial direction B, the lower horizontal band 46 cannot pass through the gap 56 from the closed position 53 in the opening direction O.

[0052] As a result, the lower horizontal band 46 securely engages with the engaging protrusion 41 in the opening direction O, and the weakened portions 49, 50 break, causing the seal 42 to separate from the lid 7, drop, and be housed in the pocket 54, as shown in Figures 9 and 10. As a result, the seal 42 is hidden inside (on the back side of) the pocket 54, making it possible to determine that the cap 1 has been opened, and if the unopened cap 1 attached to the container 2 is tampered with, it can be accurately determined that the tampering has occurred.

[0053] 9, the upper horizontal band 47 of the seal 42 engages with the engaging protrusion 41 in the downward direction, so that the seal 42 separated from the lid 7 is stored in the pocket 54 without falling off the cap 1. Therefore, the seal 42 does not become waste apart from the cap 1.

[0054] In this way, the engaging protrusions 41 are used not only to break the weakened portions 49, 50 but also to prevent the sealing body 42 from falling off after being separated from the lid 7, so the number of engaging protrusions can be reduced.

[0055] In the above embodiment, as shown in Figure 8, when the cap body 5 is attached to the container 2, the gap 56 is reduced to a degree that prevents the lower horizontal band 46 from passing through. However, the engaging protrusion 41 may be displaced radially outward C to abut against the inner surface of the pocket 54, thereby reducing the gap 56 to zero and eliminating it. (Second embodiment) In the second embodiment, as shown in Figures 11 and 12, a second window 65 is formed in the lower part of the pocket 54, through which the weakened portions 49, 50 are broken and the sealing body 42 is exposed when it is separated from the lid 7.

[0056] According to this, if the weakened portions 49, 50 do not break and the sealing body 42 is connected to the lid 7 via the weakened portions 49, 50, as shown in Figure 11, the sealing body 42 connected to the lid 7 can be seen through the first window 59, making it possible to determine that the cap 1 is unopened.

[0057] Furthermore, if the weakened portions 49, 50 break and the sealing body 42 separates from the lid 7, as shown in FIG. 12, the sealing body 42 separated from the lid 7 can be seen through the second window 65, making it possible to determine that the cap 1 has already been opened.

[0058] In each of the above embodiments, as shown in Figure 1, the cap body 5 has a dispensing plate 16 provided inside the dispensing tube 14, a flow rate adjustment plate 17, and a support portion 18 that supports the flow rate adjustment plate 17 from the dispensing plate 16, but is not limited to such a cap 1. For example, the cap may have a detachable member provided inside the dispensing tube via a breakable weakened portion, a pull ring provided on the detachable member, and by opening the lid and pulling the pull ring to break the weakened portion, the detachable member detaches from the dispensing tube and a dispensing outlet is formed inside the dispensing tube. [Explanation of symbols]

[0059] 1 cap 2 containers 3 Mouth 5 Cap body 6 Hinge 7 Lid 10 First Perimeter Wall (Perimeter Wall) 41 Engagement protrusion (first engagement portion) 42 Sealing body 44,45 Vertical band 46 Lower horizontal band (second engagement part) 47 Upper horizontal band (third engagement part) 49,50 Weakened part 51 Opening 53 Closed position 54 pockets 55 Containment Space 56 Gap 58 Information Department 59 First Window 65 Second Window A Circumferential direction B Radial direction C radially outward O Opening direction S Closing direction

Claims

1. A cap having a cap body attached to the mouth of a container and a lid attached to the cap body via a hinge so as to be able to be opened and closed freely, The cap body has a cylindrical peripheral wall that can be fitted onto the mouth of the container, a first engagement portion is provided on the outer side of the peripheral wall; The lid is provided with a seal for detecting whether or not there has been tampering, the closure has a second engagement portion and is connected to the lid via a breakable weakened portion; The capping position is set on the capping direction side of the first engagement portion, the second engaging portion is engageable with the first engaging portion in a direction from the closed position to the open position; a pocket is provided in the cap body to accommodate the sealing body separated from the lid when the weakened portion is broken; an accommodation space capable of accommodating a sealing body is formed between the peripheral wall and the pocket in the radial direction; a gap communicating with the accommodation space is formed between the first engagement portion and the pocket in the radial direction; the first engagement portion and the pocket are disposed to face each other in the radial direction with a gap therebetween, When the cap body is not attached to the container, the gap allows the second engaging portion to pass through, A cap characterized in that when the cap body is attached to a container by fitting the peripheral wall of the cap body over the mouth of the container, the peripheral wall of the cap body bulges radially outward and the first engaging portion is displaced radially outward, compared to when the cap body is not attached to the container, thereby reducing the gap in the radial direction and preventing the second engaging portion from passing through.

2. 2. The cap according to claim 1, wherein a guide portion for guiding the second engaging portion into the gap in the closing direction is formed on the opening direction side of the first engaging portion.

3. the sealing body has a third engaging portion; 3. The cap according to claim 1, wherein when the weakened portion is broken and the sealing body is separated from the lid and stored in the pocket, the third engaging portion engages with the first engaging portion in the falling direction from above.

4. The sealing body has a pair of vertical bands provided at a predetermined interval in the circumferential direction of the lid, The second engagement portion is a lower horizontal band provided between the lower portions of the pair of vertical bands, the third engagement portion is an upper horizontal band provided between the upper portions of the pair of vertical bands; an opening surrounded by a pair of vertical bands, a lower horizontal band, and an upper horizontal band is formed in the sealing body; 4. The cap according to claim 3, wherein the first engaging portion projects from the outer surface of the peripheral wall into the opening of the sealing body.

5. 5. The cap according to claim 1, wherein the pocket has a first window through which the sealing body connected to the lid via the weakened portion is exposed in the closed state.

6. 6. The cap according to claim 1, wherein the pocket is formed with a second window through which the weakened portion breaks to expose the seal when separated from the lid.

7. A method for attaching a cap according to any one of claims 1 to 6 to a mouth of a container, comprising: The cap is made with the lid open. By closing the lid before attaching the cap body to the opening of the container, the second engaging portion passes through the gap in the closing direction and is inserted into the storage space, A method of attaching a cap, characterized in that when the lid is closed, the peripheral wall of the cap body is fitted over the mouth of the container and the cap body is attached to the container, causing the peripheral wall of the cap body to bulge radially outward and the first engaging portion to be displaced radially outward, thereby reducing the gap in the radial direction and preventing the second engaging portion inserted into the storage space from passing through the gap in the opening direction from the closing position.

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