Caps and containers with caps

Abstract

To provide a cap and a capped container capable of preventing a band from being removed from the container after opening the cap.SOLUTION: A cap 20 includes: a top portion 21; a body tube portion 22 extending from the top portion 21; a band portion 30 connected to the body tube portion 22 via a connecting portion 23; and an engagement portion 40 provided on an inner surface 30a of the band portion 30 and protruding inwardly in a radial direction. An upper surface 40a of the engagement portion 40 is located on the same plane as an upper surface 30b of the band portion 30, or the upper surface 40a of the engagement portion 40 is located above the upper surface 30b of the band portion 30.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to a cap and a container with a cap. [Background technology]

[0002] 2. Description of the Related Art Conventionally, cylindrical caps have been used as caps for containers that contain beverages or the like.

[0003] For example, Patent Document 1 discloses a plastic cap having a top plate and a cylindrical side wall that descends from the peripheral edge of the top plate, with a tamper-evident band (TE band) at the lower end of the cylindrical side wall to prevent tampering and ensure the quality of the contents. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5481186 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when a container with a cap is opened, the cap is disassembled and the band falls onto the container. In this case, it is necessary to prevent the band from being removed from the container.

[0006] The present disclosure has been made in consideration of these points, and aims to provide a cap and a container with a cap that can prevent the band from being detached from the container after opening. [Means for solving the problem]

[0007] The cap in one embodiment comprises a top portion, a main body cylindrical portion extending from the top portion, a band portion connected to the main body cylindrical portion via a joint, and an engagement portion provided on the inner surface of the band portion and protruding radially inward, wherein an upper surface of the engagement portion is located on the same plane as an upper surface of the band portion, or an upper surface of the engagement portion is located higher than the upper surface of the band portion.

[0008] In the cap according to one embodiment, the amount of radial inward protrusion of the engagement portion may be maximum at an upper end of the engagement portion.

[0009] In the cap according to one embodiment, an upper surface of the engagement portion may be parallel to a horizontal plane.

[0010] In the cap according to one embodiment, a maximum radially inward protrusion amount of the engagement portion from an inner circumferential surface of the band portion may be 0.3 mm or more and 1.5 mm or less.

[0011] In the cap according to one embodiment, in a vertical cross section, the engagement portion may be inclined radially outwardly as it extends downward.

[0012] In the cap according to one embodiment, the engagement portion may be provided at a position different from the joint in the circumferential direction.

[0013] In the cap according to one embodiment, a claw portion for breaking the joint may be provided on an inner peripheral surface of the band portion.

[0014] In the cap according to one embodiment, the tab portion may be provided at a different position from the joint in the circumferential direction.

[0015] In the cap according to one embodiment, the engaging portion may be provided in a plurality of portions spaced apart from each other in the circumferential direction.

[0016] In the cap according to one embodiment, the shape of an inner edge of the engagement portion may be a circular arc in a horizontal cross section.

[0017] A capped container according to one embodiment is a capped container comprising a container body and a cap according to one embodiment attached to the container body. Effect of the Invention

[0018] According to the present disclosure, it is possible to prevent the band from being removed from the container after opening. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a front view showing a capped container according to one embodiment. [Diagram 2] FIG. 2 is a front view showing a cap according to one embodiment. [Diagram 3] FIG. 3 is a perspective view of a cap according to one embodiment. [Figure 4] FIG. 4 is a cross-sectional view (cross-sectional view taken along line IV-IV in FIG. 2) showing the cap according to one embodiment. [Diagram 5] FIG. 5 is a cross-sectional view showing a cap according to an embodiment (a cross-sectional view obtained by turning the cross-sectional view taken along line VV in FIG. 4 upside down). [Figure 6] FIG. 6 is an enlarged cross-sectional view showing a cap according to one embodiment (an enlarged cross-sectional view corresponding to a portion VI in FIG. 5). [Figure 7] FIG. 7 is a cross-sectional view showing a method for manufacturing a cap according to an embodiment. [Figure 8] FIG. 8 is a cross-sectional view showing a method for manufacturing a cap according to an embodiment. [Figure 9] FIG. 9 is a cross-sectional view showing a method for manufacturing a cap according to an embodiment. [Figure 10] FIG. 10 is a cross-sectional view showing a method for manufacturing a cap according to an embodiment. [Figure 11]FIG. 11 is a cross-sectional view showing a comparative example of a manufacturing method for the cap according to the embodiment. [Figure 12] FIG. 12 is a cross-sectional view (corresponding to FIG. 6) showing a modified example (first modified example) of the cap according to one embodiment. [Figure 13] FIG. 13 is a cross-sectional view (corresponding to FIG. 6) showing a modified example (second modified example) of the cap according to the embodiment. [Figure 14] FIG. 14 is a cross-sectional view (corresponding to FIG. 4) showing a modified example (third modified example) of the cap according to one embodiment. [Figure 15] FIG. 15 is a cross-sectional view (corresponding to FIG. 4) showing a modified example (fourth modified example) of the cap according to one embodiment. [Figure 16] FIG. 16 is a perspective view (corresponding to FIG. 3) showing a modified example (fifth modified example) of the cap according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] An embodiment will be described below with reference to the drawings. FIGS. 1 to 11 are diagrams showing an embodiment. Each of the figures shown below is a schematic diagram. Therefore, the size and shape of each part are appropriately exaggerated to facilitate understanding. In addition, it is possible to carry out appropriate modifications within the scope of the technical idea. In each of the figures shown below, the same parts are given the same reference numerals, and some detailed explanations may be omitted. In addition, the numerical values ​​such as dimensions of each member and the material names described in this specification are examples of embodiments, and are not limited to these, and can be appropriately selected and used. In this specification, terms that specify shapes and geometric conditions, such as parallel, orthogonal, and vertical, are intended to include substantially the same state in addition to their strict meanings. In addition, in this specification, "upper", "lower", and "horizontal direction" refer to the upper, lower, and horizontal directions in the state in which the capped container 1 or the cap 20 is upright (FIGS. 1 and 2), respectively.

[0021] Container with cap First, an overview of a capped container according to one embodiment will be described with reference to FIG.

[0022] As shown in FIG. 1, a capped container 1 according to this embodiment includes a container body 2 and a cap 20 attached to the container body 2.

[0023] Container body The container body 2 has a pouch 3 and a spout 10 attached to the pouch 3.

[0024] Among these, the pouch 3 is a standing type pouch having a body 4a and a bottom 4b. The body 4a includes a pair of main sheets 5a, 5b arranged opposite each other, and the vicinity of the side edges 6 and the vicinity of the upper edge 7 of the pair of overlapping main sheets 5a, 5b are heat-sealed to each other.

[0025] A bottom sheet 9 forming the bottom portion 4b is disposed between the lower edges 8 of the pair of main sheets 5a, 5b. A storage space 2a for storing contents is defined within the space surrounded by the pair of main sheets 5a, 5b and the bottom sheet 9.

[0026] The bottom sheet 9 is bent so as to be convex toward the storage space 2a, and the vicinity of its periphery is heat-sealed to the lower parts of the overlapping main sheets 5a, 5b. The bottom sheet 9 maintains the shape of the lower edges 8 of the pair of main sheets 5a, 5b, thereby providing the pouch 3 with self-supporting properties.

[0027] A spout 10 is attached to the center of the upper part of the pouch 3. The spout 10 is disposed between the pair of overlapping main sheets 5a, 5b. In this manner, the upper part of the pouch 3 is closed by the pair of main sheets 5a, 5b and the spout 10.

[0028] In addition, in FIG. 1, an example in which the pouch 3 is a standing type pouch is shown, but the pouch 3 is not limited to this, and may be a flat bag such as a gusseted bag, a three-sided bag, or a four-sided bag.

[0029] The main sheets 5a, 5b and bottom sheet 9 used in the pouch 3 may be laminates having the layer structure shown below. PET / DL / AL / DL / ON / DL / CPP or LLDPE (contents side) PET / DL / ON / DL / AL / DL / CPP or LLDPE (contents side) Vapor-deposited PET / DL / ON / DL / CPP or LLDPE (contents side) PET / DL / Vapor deposition ON / DL / CPP or LLDPE (contents side) Vapor-deposited PET / DL / CPP or LLDPE (contents side) Coated PET / DL / CPP or LLDPE (content side) Vapor deposition ON / DL / CPP or LLDPE (contents side) PET / DL / evaporated PET / DL / ON / DL / CPP or LLDPE (contents side) PBT / DL / AL / DL / CPP or LLDPE (contents side) "Vapor-deposited ON" refers to ON with vapor-deposited silicon oxide or aluminum oxide, "LLDPE" refers to linear low-density polyethylene, "DL" refers to an adhesive layer created by the dry lamination method, and "coated PET" refers to PET coated with a barrier substrate such as PVA (polyvinyl alcohol) or PVDC (polyvinylidene chloride).

[0030] Next, the spout 10 will be described. The spout 10 has a cylindrical portion 11 having a hollow cylindrical shape and a male thread 14 formed on the outer surface, a flange portion 12 provided on the outer peripheral surface of the cylindrical portion 11, and a welding portion 13 provided below the flange portion 12 and to which a pair of main surface sheets 5a, 5b of the pouch 3 are welded. The cylindrical portion 11, the flange portion 12, and the welding portion 13 are integrally molded from a synthetic resin such as polypropylene (PP) or polyethylene (PE). The spout 10 may also be produced by an injection molding method using a thermoplastic resin, for example. The resin for molding the spout 10 may be a blend of the various resins described above, or a resin containing a biomass-derived component.

[0031] A through hole 15 having a generally circular shape in a plan view is formed in the spout 10. This through hole 15 extends vertically along the axial direction of the spout 10. Through hole 15 communicates with the inside of the pouch 3, and the contents contained in the pouch 3 are poured out through this through hole 15.

[0032] The cylindrical portion 11 has an outer surface provided with a male thread 14 which meshes with a female thread 26 (see FIG. 5) which will be described later and is provided on the inner peripheral surface of the cap 20. The male thread 14 may be a single-start thread or a multiple-start thread.

[0033] A circumferential protrusion 16 is formed on the lower part of the cylindrical part 11. After the capped container 1 is opened, an engagement part 40 (see FIG. 3) provided on the band part 30 described later engages with the circumferential protrusion 16, thereby preventing the band part 30 from falling off the container body 2 (spout 10). The band part 30 is accommodated between the circumferential protrusion 16 and the flange part 12.

[0034] Furthermore, a plurality of ratchet portions 19 protrude radially outward between the circumferential protrusion 16 and the flange portion 12. When the capped container 1 is opened, the ratchet portions 19 are abutted by the claw portions 34 (see FIG. 4) of the band portion 30 to suppress rotation of the band portion 30. In the illustrated example, two ratchet portions 19 are provided. Note that one ratchet portion 19 or three or more ratchet portions 19 may be provided.

[0035] The flange portion 12 is provided on the lower portion of the cylindrical portion 11. The flange portion 12 extends from the outer surface of the cylindrical portion 11 radially outward.

[0036] cap 2 to 6, the cap 20 will be described. The cap 20 is attached to the container body 2 to seal the contents in the capped container 1. The cap 20 is detachable from the container body 2.

[0037] As shown in Figs. 2 to 5, the cap 20 includes a top portion 21, a main body tubular portion 22 extending from the top portion 21, a band portion 30 connected to the main body tubular portion 22 via a joint 23, and an engagement portion 40 (see Figs. 3 to 5) provided on the inner peripheral surface 30a of the band portion 30 and protruding radially inward. The top portion 21, the main body tubular portion 22, the band portion 30, and the engagement portion 40 are integrally molded from synthetic resin such as polypropylene (PP) or polyethylene (PE). The cap 20 may also be manufactured by injection molding using a thermoplastic resin. The resin for molding the cap 20 may be a blend of the above-mentioned various resins, or a resin containing a biomass-derived component.

[0038] Top portion 21 has a generally circular shape in plan view, with recess 21a (see FIG. 5) formed in the center. A cylindrical inner ring 24a is formed on the lower surface of top portion 21, radially inside main body tube portion 22. This inner ring 24a is disposed on the inner surface of cylindrical portion 11 of spout 10 (see FIG. 5). Also, an annular contact ring 24b is formed on the lower surface of top portion 21, radially outside inner ring 24a. This contact ring 24b comes into contact with the upper surface of cylindrical portion 11 of spout 10, thereby improving the airtightness of capped container 1.

[0039] 2 and 3, the tubular body portion 22 is generally cylindrical and hangs down from the top portion 21. A plurality of knurls 25 are formed on the outer surface of the tubular body portion 22, which function as an anti-slip surface when the cap 20 is gripped by the hand. Each knurl 25 protrudes radially outward from the tubular body portion 22 and extends parallel to the up-down direction of the tubular body portion 22 (the axial direction of the spout 10). A female thread 26 (see FIG. 5) that screws into the male thread 14 of the spout 10 is formed on the inner surface of the tubular body portion 22. The female thread 26 may be a single-start thread or a multiple-start thread.

[0040] A plurality of (for example, four) seating portions 27 are arranged at intervals in the circumferential direction on the lower surface of the main body tubular portion 22. The seating portions 27 each protrude toward the band portion 30.

[0041] The band portion 30 is a ring-shaped pill-band that maintains its annular shape without breaking in any part of the circumferential direction even after opening. The band portion 30 is connected to the main body tubular portion 22 via a joint 23, and a gap is formed between the band portion 30 and the main body tubular portion 22.

[0042] Furthermore, engagement projections 28, 33 are provided at opposing positions in the circumferential direction on the main body tubular portion 22 and the band portion 30 of the cap 20, which engage with each other when the cap 20 is screwed onto the spout 10. Such engagement projections 28, 33 can prevent the connector 23 from breaking when the cap 20 is screwed onto the spout 10.

[0043] The connector 23 is provided between the main body tubular portion 22 and the band portion 30. The connector 23 is thin and columnar. In this embodiment, the connector 23 extends downward from the base portion 27, and a plurality of connectors 23 (for example, four connectors) are provided at intervals in the circumferential direction. Each connector 23 is tapered from the main body tubular portion 22 toward the band portion 30. Therefore, the main body tubular portion 22 and the band portion 30 can be easily broken at the connector 23. At this time, the broken connector 23 remains on the main body tubular portion 22 side. By checking whether the connector 23 is broken, it can be determined whether the cap 20 has been opened fraudulently.

[0044] 3 and 4, an engagement portion 40 is provided on the inner peripheral surface 30a of the band portion 30. This engagement portion 40 engages with the circumferential protrusion 16 of the spout 10 after the capped container 1 is initially opened, and serves to prevent the band portion 30 from falling off from the container body 2.

[0045] 3, when viewed from the radial direction, the shape of the engagement portion 40 is a substantially inverted triangle (an inverted triangle with rounded lower corners). That is, the width (circumferential distance) of the engagement portion 40 gradually narrows toward the bottom. For this reason, when the cap 20 is attached to the container body 2, the engagement portion 40 easily climbs over the circumferential protrusion 16 of the spout 10.

[0046] As shown in FIG. 4, the engaging portion 40 is provided at a position different from the connector 23 in the circumferential direction. This can prevent the engagement portion 40 from interfering with the core 82 of the die 80 (see FIG. 7) described later when the cap 20 is manufactured. In addition, since the engaging portion 40 is provided at a position different from the connector 23 in the circumferential direction, it can prevent the connector 23 from interfering with the circumferential protrusion 16 of the spout 10 when the cap 20 is attached to the container body 2. Here, by making the radial position of the inner edge of the connector 23 the same as the radial position of the inner edge 40b of the engaging portion 40, the engaging portion 40 can be provided at a position overlapping the connector 23 in the circumferential direction without interfering with the core 82 and the engaging portion 40 when the cap 20 is manufactured. On the other hand, in this case, there is a possibility that the connector 23 will interfere with the circumferential protrusion 16 of the spout 10 when the cap 20 is attached to the container body 2. In contrast, in the present embodiment, the engagement portion 40 is provided at a position different from the connector 23 in the circumferential direction. This makes it possible to prevent the connector 23 from interfering with the circumferential protrusion 16 of the spout 10 when the cap 20 is attached to the container body 2. In the illustrated example, a plurality of engagement portions 40 are provided at intervals in the circumferential direction. This makes it possible to reduce the amount of resin used to form the engagement portions 40.

[0047] Moreover, in a horizontal cross section, the shape of the inner edge 40b of the engaging portion 40 is an arc. This can prevent the engaging portion 40 from interfering with the ratchet portion 19 of the spout 10. This can prevent the engaging portion 40 from interfering with the ratchet portion 19, thereby preventing the connector 23 from being unintentionally broken.

[0048] The ratchet portion 19 of the spout 10 is arranged between these engaging portions 40. This makes it possible to prevent the ratchet portion 19 from interfering with the engaging portions 40 when the cap 20 is removed from the spout 10.

[0049] Further, a claw portion 34 for breaking the joint 23 is provided on the inner peripheral surface 30a of the band portion 30. The claw portion 34 is provided at a position different from the engagement portion 40 in the circumferential direction. The claw portion 34 protrudes radially inward from the band portion 30. When the capped container 1 is initially opened, the claw portion 34 abuts against the ratchet portion 19 of the spout 10 to suppress the rotation of the band portion 30. In this way, the claw portion 34 is provided on the inner peripheral surface 30a of the band portion 30, so that the joint 23 can be reliably broken. In the illustrated example, two claw portions 34 are provided. Note that one or three or more claw portions 34 may be provided.

[0050] In the circumferential direction, the claw portion 34 is provided at a position different from the connector 23. This makes it possible to prevent interference between the core 82 of the mold 80 and the claw portion 34 when manufacturing the cap 20. In addition, since the claw portion 34 is provided at a position different from the connector 23 in the circumferential direction, it makes it possible to prevent interference between the connector 23 and the circumferential protrusion 16 of the spout 10 when attaching the cap 20 to the container body 2.

[0051] Next, the engaging portion 40 will be described in more detail with reference to FIG.

[0052] 6, the upper surface 40a of the engagement portion 40 is located on the same plane as the upper surface 30b of the band portion 30. This makes it possible to prevent interference between the core 82 of the mold 80 and the engagement portion 40 when producing the cap 20, as described below. This makes it possible to increase the amount of protrusion of the engagement portion 40 inward in the radial direction. As a result, it is possible to easily engage the engagement portion 40 with the circumferential protrusion 16 of the spout 10, and it is possible to prevent the band portion 30 from falling off the container body 2.

[0053] The amount of radial inward protrusion of the engagement portion 40 is maximum at the upper end of the engagement portion 40. This makes it possible to more effectively prevent the core 82 of the mold 80 from interfering with the engagement portion 40 when the cap 20 is produced, as described later. The maximum amount of radial inward protrusion L of the engagement portion 40 from the inner circumferential surface 30a of the band portion 30 is preferably 0.3 mm or more and 1.5 mm or less. By making the amount of protrusion L 0.3 mm or more, the engagement portion 40 can be easily engaged with the circumferential protrusion 16 of the spout 10, and the band portion 30 can be more effectively prevented from falling off from the container body 2. In addition, by making the amount of protrusion L 1.5 mm or less, it is possible to prevent the length (radial distance) of the protruding portion 83b (see FIG. 7) of the slide mold 83 of the mold 80, which will be described later, from becoming too long. This makes it possible to prevent the strength of the protruding portion 83b from decreasing.

[0054] The upper surface 40a of the engagement portion 40 is parallel to the horizontal plane S (see FIG. 6). Generally, the lower surface of the circumferential protrusion 16 of the spout 10 is formed to be parallel to the horizontal plane S when the capped container 1 is upright. Therefore, since the upper surface 40a of the engagement portion 40 is parallel to the horizontal plane S, when the cap 20 is attached to the container body 2, the upper surface 40a of the engagement portion 40 and the lower surface of the circumferential protrusion 16 of the spout 10 are parallel to each other. As a result, the engagement portion 40 can be firmly engaged with the circumferential protrusion 16 of the spout 10. Therefore, it is possible to more effectively prevent the band portion 30 from falling off the container body 2.

[0055] In a vertical cross section, the engagement portion 40 is inclined radially outward as it goes downward. In this case, when the cap 20 is attached to the container body 2, the engagement portion 40 can easily climb over the circumferential protrusion 16 of the spout 10. In this case, the inclination angle α of the engagement portion 40 with respect to the horizontal plane S is preferably 50° or more and 80° or less. When the inclination angle α of the engagement portion 40 with respect to the horizontal plane S is 50° or more, the engagement portion 40 can easily climb over the circumferential protrusion 16 of the spout 10 when the cap 20 is attached to the container body 2. In addition, when the inclination angle α of the engagement portion 40 with respect to the horizontal plane S is 80° or less, the above-mentioned protrusion amount L can be increased.

[0056] Furthermore, the engagement portion 40 is provided over the entire area of ​​the band portion 30 in the vertical direction. In this case, even if the amount of radial inward protrusion of the engagement portion 40 is increased, the inclination angle α of the engagement portion 40 with respect to the horizontal plane S can be increased. This makes it easier for the engagement portion 40 to climb over the circumferential protrusion 16 of the spout 10 when the cap 20 is attached to the container body 2. Note that the engagement portion 40 may be provided over only a portion of the band portion 30 in the vertical direction.

[0057] Next, the operation of this embodiment will be described below. Here, a method for manufacturing the cap 20 will be described with reference to FIGS.

[0058] Cap manufacturing method First, as shown in Fig. 7, a mold 80 is prepared, which includes a mold with a cavity 81, a core 82, a pair of slide dies 83, and a pair of stripper dies 84. The mold with a cavity 81 is formed with a gate (injection port) 81a for injecting an injection resin at a position corresponding to the recess 21a of the top part 21. The pair of slide dies 83 are formed with a recess 83a corresponding to the band part 30 and the engagement part 40, and a protrusion 83b provided above the recess 83a and protruding radially inward.

[0059] 8, an injection resin is injected into a mold 80. At this time, the injection resin is injected from a gate 81a into a space between a mold 81 with a cavity and a core 82. As the injection resin, for example, polypropylene or polyethylene can be used.

[0060] The injected resin enters between the cavity mold 81, the pair of slide dies 83, and the core 82, and the cap 20 is formed by this injected resin.

[0061] In this manner, the cap 20 is obtained in the mold 80. Next, the mold with cavity 81 of the mold 80 is removed from the cap 20 attached to the core 82, as shown in FIG.

[0062] 10, the cap 20 is removed from the core 82, the pair of slide dies 83, and the pair of stripper dies 84. At this time, the pair of slide dies 83 move radially outward, and then the pair of stripper dies 84 move upward. As a result, the stripper dies 84 remove the cap 20 from the core 82.

[0063] As a comparative example, in the case of a cap 20a in which the upper surface 40a of the engagement portion 40 is located below the upper surface 30b of the band portion 30 as shown in FIG. 11, a protruding portion 82a protruding radially outward is formed on the core 82. This protruding portion 82a interferes with the engagement portion 40. As a result, if the amount of protrusion of the engagement portion 40 toward the radially inward direction is increased, the cap 20 may not be able to be removed from the core 82. Alternatively, if the amount of protrusion of the engagement portion 40 toward the radially inward direction is increased, the engagement portion 40 may be deformed when the cap 20 is removed from the core 82, and the engagement portion 40 may not be able to be molded into a desired shape. For this reason, it is difficult to increase the amount of protrusion of the engagement portion 40 toward the radially inward direction.

[0064] In contrast, in this embodiment, the upper surface 40a of the engagement portion 40 is located on the same plane as the upper surface 30b of the band portion 30. In this case, as shown in Fig. 10 described above, when removing the cap 20 from the core 82, the cap 20 can be removed from the core 82 without the engagement portion 40 interfering with the core 82. This allows the engagement portion 40 to protrude radially inwardly to a greater extent, making it easier to engage the engagement portion 40 with the circumferential protrusion 16 of the spout 10.

[0065] As described above, according to this embodiment, the upper surface 40a of the engagement portion 40 is located on the same plane as the upper surface 30b of the band portion 30. This makes it possible to prevent interference between the core 82 of the mold 80 and the engagement portion 40 when producing the cap 20. This makes it possible to increase the amount of protrusion of the engagement portion 40 inward in the radial direction. As a result, it is possible to easily engage the engagement portion 40 with the circumferential protrusion 16 of the spout 10, and it is possible to prevent the band portion 30 from falling off the container body 2.

[0066] Furthermore, according to this embodiment, the amount of radial inward protrusion of the engaging portion 40 is maximum at the upper end of the engaging portion 40. This makes it possible to more effectively prevent interference between the core 82 of the mold 80 and the engaging portion 40 when manufacturing the cap 20.

[0067] Furthermore, according to this embodiment, the upper surface 40a of the engagement portion 40 is parallel to the horizontal plane S. This allows the engagement portion 40 to be securely engaged with the circumferential protrusion 16 whose lower surface can be formed parallel to the horizontal plane S. This makes it possible to more effectively prevent the band portion 30 from falling off the container body 2.

[0068] Furthermore, according to this embodiment, in a vertical cross section, the engaging portion 40 is inclined radially outward as it extends downward. This makes it easier for the engaging portion 40 to climb over the circumferential protrusion 16 of the spout 10 when the cap 20 is attached to the container body 2. Therefore, even if the engaging portion 40 protrudes radially inward by a large amount, the cap 20 can be easily attached to the container body 2 without being damaged.

[0069] Furthermore, according to this embodiment, the engaging portion 40 is provided at a position different from the connector 23 in the circumferential direction. This makes it possible to prevent interference between the core 82 of the mold 80 and the engaging portion 40 when producing the cap 20. Furthermore, it makes it possible to prevent interference between the connector 23 and the circumferential protrusion 16 of the spout 10 when attaching the cap 20 to the container body 2.

[0070] Furthermore, according to this embodiment, the inner peripheral surface 30a of the band portion 30 is provided with the claw portions 34 for breaking the ties 23. This makes it possible to break the ties 23 reliably.

[0071] Furthermore, according to this embodiment, the claws 34 are provided at positions different from the connectors 23 in the circumferential direction. This makes it possible to prevent interference between the core 82 of the mold 80 and the claws 34 when producing the cap 20. Furthermore, it makes it possible to prevent interference between the connectors 23 and the circumferential protrusions 16 of the spout 10 when attaching the cap 20 to the container body 2.

[0072] Furthermore, according to this embodiment, a plurality of engaging portions 40 are provided at intervals in the circumferential direction, which allows the amount of resin used to form the engaging portions 40 to be reduced.

[0073] Furthermore, according to this embodiment, in a horizontal cross section, the shape of inner edge 40b of engagement portion 40 is an arc. This makes it possible to prevent engagement portion 40 from interfering with ratchet portion 19 of spout 10. This makes it possible to prevent engagement portion 40 from interfering with ratchet portion 19, thereby preventing connector 23 from being unintentionally broken.

[0074] In the above-described embodiment, an example has been described in which the container body 2 has the pouch 3 and the spout 10 attached to the pouch 3, but the present invention is not limited to this. For example, although not shown, the container body may be a container such as a PET bottle.

[0075] In the above-described embodiment, the cap 20 is produced by using the mold 80, but the present invention is not limited to this. For example, although not shown in the drawings, the cap 20 may be produced by using a 3D printer.

[0076] Variations Next, various modified examples of the cap will be described with reference to Figures 12 to 16. Figures 12 to 16 are diagrams showing various modified examples of the cap or the main body of the cap. In Figures 12 to 16, the same parts as those shown in Figures 1 to 11 are given the same reference numerals and detailed explanations are omitted.

[0077] (First Modification) Fig. 12 shows the cap 20 according to the first modified example. In Fig. 12, the upper surface 40a of the engagement portion 40 is located above the upper surface 30b of the band portion 30. Even in this case, when the cap 20 is produced, interference between the core 82 of the mold 80 and the engagement portion 40 can be suppressed, and the amount of protrusion of the engagement portion 40 toward the radially inward direction can be increased. This makes it easier to engage the engagement portion 40 with the circumferential protrusion 16 of the spout 10, and prevents the band portion 30 from falling off the container body 2.

[0078] (Second Modification) FIG. 13 shows the cap 20 according to the second modified example. In FIG. 13, the engagement portion 40 extends in the vertical direction in the vertical cross section. In the illustrated example, the engagement portion 40 is provided only in the upper half of the band portion 30. However, this is not limited to this, and the engagement portion 40 may be provided in the entire area of ​​the band portion 30 in the vertical direction. In this case, for example, although not illustrated, in the vertical cross section, the shape of the part of the engagement portion 40 provided in the upper half of the band portion 30 and the shape of the part provided in the lower half of the band portion 30 may be different from each other. For example, although not illustrated, in the vertical cross section, the part of the engagement portion 40 provided in the upper half of the band portion 30 may extend in the vertical direction, and the part provided in the lower half of the band portion 30 may be inclined radially outward as it goes downward. Even in these cases, the engagement portion 40 can be easily engaged with the circumferential protrusion 16 of the spout 10, and the band portion 30 can be prevented from falling off the container body 2.

[0079] (Third Modification) FIG. 14 shows the cap 20 according to the third modified example. In FIG. 14, the claw portion 34 is not provided on the inner peripheral surface 30a of the band portion 30. In this case, the shape of the engagement portion 40 is substantially triangular in horizontal cross section. As a result, even if the claw portion 34 is not provided on the inner peripheral surface 30a of the band portion 30, when the capped container 1 is initially opened, the engagement portion 40 can abut against the ratchet portion 19 of the spout 10 to suppress the rotation of the band portion 30. Therefore, the joint 23 can be reliably broken. Also, in this case, the engagement portion 40 can be easily engaged with the circumferential protrusion 16 of the spout 10, and the band portion 30 can be prevented from falling off the container body 2.

[0080] (Fourth Modification) Fig. 15 shows cap 20 according to a fourth modified example. In Fig. 15, the shape of engagement portion 40 is substantially trapezoidal in horizontal cross section. Even in this case, engagement portion 40 can be easily engaged with circumferential protrusion 16 of spout 10, and band portion 30 can be prevented from falling off container body 2.

[0081] (Fifth Modification) Fig. 16 shows the cap 20 according to the fifth modified example. In Fig. 16, when viewed from the radial direction, the shape of the engagement portion 40 is a substantially inverted trapezoid (a trapezoid whose upper base is longer than its lower base). Even in this case, the width (circumferential distance) of the engagement portion 40 gradually narrows toward the bottom, making it easier for the engagement portion 40 to climb over the circumferential protrusion 16 of the spout 10 when the cap 20 is attached to the container body 2. Even in this case, the engagement portion 40 can be easily engaged with the circumferential protrusion 16 of the spout 10, and the band portion 30 can be prevented from falling off the container body 2.

[0082] It is also possible to combine the multiple components disclosed in the above embodiment and each modification as necessary. Alternatively, some components may be deleted from all the components shown in the above embodiment and each modification. [Explanation of symbols]

[0083] 1 container with cap 2 Container body 20 Cap 21 Heaven 22 Main body cylinder 23 Jumpsuit 30 Band 30a Inner surface 30b Top surface 34 Claw part 40 Engagement part 40a top 40b Inner border

Claims

1. Heaven and A main body tube portion extending from the top portion; A band portion connected to the main body tube portion via a joint; An engagement portion is provided on an inner circumferential surface of the band portion and protrudes radially inward, The upper surface of the engagement portion is located on the same plane as the upper surface of the band portion, or the upper surface of the engagement portion is located higher than the upper surface of the band portion, The engaging portion is provided in a plurality of portions spaced apart from one another in the circumferential direction, The engaging portion is provided at a position different from the joint in the circumferential direction, A claw portion for breaking the connection is provided on an inner peripheral surface of the band portion at a distance from the engagement portion in a circumferential direction, The width of the engagement portion gradually narrows downward.

2. In a horizontal cross section, the shape of the inner edge of the engagement portion is an arc, The cap according to claim 1 , wherein the shape of the engagement portion when viewed from a radial direction is an inverted triangle with a rounded lower corner.

3. The cap according to claim 1 , wherein the amount of radial inward protrusion of the engagement portion is greatest at an upper end of the engagement portion.

4. The cap according to claim 1 , wherein an upper surface of the engagement portion is parallel to a horizontal plane.

5. The cap according to claim 1 , wherein a maximum radially inward protrusion of the engagement portion from an inner circumferential surface of the band portion is 0.3 mm or more and 1.5 mm or less.

6. The cap according to claim 1 , wherein, in a vertical cross section, the engagement portion is inclined radially outwardly as it extends downward.

7. The cap according to claim 1 , wherein the tabs are provided at positions different from the joints in the circumferential direction.

8. A container body; A capped container comprising: a cap according to any one of claims 1 to 7 attached to the container body.

Images