Spout assembly and container with spout

Abstract

To provide an outlet assembly and a container with an outlet, which can prevent alteration of a content and can be easily opened.SOLUTION: An outlet assembly 20 comprises: an outlet 30 having a cylindrical part 31, a flange 32 positioned below the cylindrical part 31, and a first projection 38 positioned above the flange 32; and a cap 50 having a cap cylindrical part 52 and a band 60 connected to the cap cylindrical part 52 through a thin part 61 and including a second projection 62 opposed to the first projection 38. A first ratchet 36 for regulating rotation of the band 60 in the opening direction of the cap 50 and a first stopper 41 for regulating rotation of the band 60 in the closing direction of the cap 50 are formed in the outlet 30. A second ratchet 66 engaged with the first ratchet 36 and a second stopper 70 engaged with the first stopper 41 are formed in the band 60.SELECTED DRAWING: Figure 6

Description

【Technical Field】 【0001】 The present disclosure relates to a spout assembly and a container with a spout. 【Background Art】 【0002】 Conventionally, a spout attached to a container has been known (for example, Patent Document 1). In Patent Document 1, even in a configuration where a closing plate is not provided on the plug body, a spout plug and a packaging container capable of suppressing an increase in the force required for opening the plug while ensuring high sealing performance are disclosed. This spout plug is provided with a band portion which is a tamper-evidence band that can be detached from the cap by breaking a thin portion when opening the plug. 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Unexamined Patent Application Publication No. 2020 - 023342 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 By the way, in a container to which such a cap is attached, when attaching the cap to the spout, if the cap is tightened too much, there is a possibility that it will be difficult to open the container. 【0005】 The present disclosure has been made in consideration of such points, and an object thereof is to provide a spout assembly and a container with a spout that can prevent tampering with the contents and can be easily opened. 【Means for Solving the Problems】 【0006】 A first aspect of the present disclosure is a spout assembly comprising: a cylindrical portion having male threads formed on its outer surface; a spout having a flange portion located below the cylindrical portion; and a first projection located on the flange portion; a cap having a top portion; a cap cylinder portion extending from the top portion and having female threads formed on its inner surface that screw into the male threads of the spout; and a band portion connected to the cap cylinder portion via a thin-walled portion and including a second projection facing the first projection, wherein the spout has a first ratchet portion that restricts the rotation of the band portion in the opening direction of the cap, and a first stopper that restricts the rotation of the band portion in the closing direction of the cap, and the band portion has a second ratchet portion that engages with the first ratchet portion and a second stopper that engages with the first stopper. 【0007】 A second aspect of the present disclosure is the spout assembly according to the first aspect described above, wherein the band portion may be separable from the cap cylinder portion by the thin-walled portion being cut when the cap is rotated in the opening direction, and after the band portion is separated, the second projection may fall to a position not facing the first projection. 【0008】 A third aspect of the present disclosure is a spout assembly according to the first or second aspect described above, wherein a third stopper is formed on the spout for restricting the rotation of the cap cylinder portion in the closing direction of the cap, and a fourth stopper is formed on the cap cylinder portion for engaging with the third stopper. 【0009】 A fourth aspect of the present disclosure is a spout assembly according to each of the first to third aspects described above, wherein a first claw portion projecting upward is formed on the upper surface of the band portion, and a second claw portion projecting downward is formed on the lower surface of the cap cylinder portion, and the first claw portion and the second claw portion may overlap each other in the vertical direction. 【0010】 A fifth aspect of the present disclosure is a container with a spout, comprising a container body having an opening, and a spout assembly attached to the container body and closing the opening, according to each of the first to fourth aspects described above. [Effects of the Invention] 【0011】 According to this disclosure, the contents will be prevented from being tampered with, and the container with a spout will be easy to open. [Brief explanation of the drawing] 【0012】 [Figure 1] Figure 1 is a perspective view showing a container with a spout according to one embodiment. [Figure 2] Figure 2 is a side view showing a container with a spout according to one embodiment. [Figure 3] Figure 3 is a cross-sectional view (cross-sectional view along line III-III in Figure 2) showing a container with a spout according to one embodiment. [Figure 4] Figure 4 is a perspective view showing a spout assembly according to one embodiment. [Figure 5] Figure 5 is a perspective view showing the spout of a spout assembly according to one embodiment. [Figure 6] Figure 6 is a cross-sectional view (enlarged view of part VI in Figure 3) showing a spout assembly according to one embodiment. [Figure 7] Figure 7 is a cross-sectional view (cross-sectional view along line VII-VII in Figure 3) showing a spout assembly according to one embodiment. [Figure 8] Figure 8 is a cross-sectional view (cross-sectional view along line VIII-VIII in Figure 3) showing a spout assembly according to one embodiment. [Figure 9] Figure 9 is a perspective view showing the cap of a spout assembly according to one embodiment. [Figure 10] Figure 10 is a front view showing the cap of a spout assembly according to one embodiment. [Figure 11] Figure 11 is a side view showing the cap of a spout assembly according to one embodiment. [Figure 12A]Figs. 12A(a)-(b) are cross-sectional views for explaining the operation of the container with a pouring outlet according to an embodiment. [Figure 12B] Figs. 12B(a)-(b) are cross-sectional views for explaining the operation of the container with a pouring outlet according to an embodiment. [Figure 12C] Figs. 12C(a)-(b) are cross-sectional views for explaining the operation of the container with a pouring outlet according to an embodiment. [Figure 12D] Figs. 12D(a)-(b) are cross-sectional views for explaining the operation of the container with a pouring outlet according to an embodiment. [Figure 13] Figs. 13(a)-(b) are cross-sectional views for explaining the operation of the container with a pouring outlet according to an embodiment. [Figure 14] Figs. 14(a)-(b) are cross-sectional views for explaining the operation of the container with a pouring outlet according to an embodiment. [Figure 15] Figs. 15(a)-(b) are front views for explaining the operation of the container with a pouring outlet according to an embodiment. [Figure 16] Figs. 16(a)-(b) are cross-sectional views for explaining the operation of a modified example of the pouring outlet assembly according to an embodiment. 【Embodiments for Carrying Out the Invention】 【0013】 Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. FIGS. 1 to 15 are diagrams showing an embodiment of the present disclosure. Each of the diagrams shown below is a schematically shown diagram. Therefore, the sizes and shapes of each part are exaggerated as appropriate for easy understanding. Also, it can be implemented with appropriate changes without departing from the technical idea. In each of the diagrams shown below, the same parts are denoted by the same reference numerals, and some detailed descriptions may be omitted. In addition, the numerical values and material names of the dimensions of each member described in this specification are examples as embodiments, and are not limited thereto, and can be appropriately selected and used. In this specification, terms specifying shapes and geometric conditions, such as terms like parallel, orthogonal, and perpendicular, are to be interpreted to include not only the strictly meant state but also substantially the same state. 【0014】 Container with spout As shown in Figures 1 and 2, one embodiment of the container with a spout 1 comprises a container body 10 provided with an opening 11, and a spout assembly 20 attached to the container body 10 to close the opening 11. 【0015】 In this embodiment, the container body 10 is a paper container. In the illustrated example, the container body 10 has a rectangular cylindrical body 12, a rectangular plate-shaped bottom 13, and a top 14, and is a so-called gable-top type container. The top 14 includes a pair of opposing inclined plates 15 and a pair of folded portions 16 located between the pair of inclined plates 15 and folded between the inclined plates 15. The pair of inclined plates 15 are bonded or welded to each other via adhesive tabs 17 provided at the upper ends of each. 【0016】 In this case, when multiple containers with spouts 1 are arranged side by side, it may be required that the spout assembly 20 of one container 1 does not interfere with the spout assembly 20 of another container 1. Furthermore, it may be required that the spout assembly 20 of one container does not unintentionally interfere with, for example, the cardboard box used to package the container 1, the display shelf for displaying the container 1, or other products. In this case, as shown in Figure 2, it may be required that, in a side view, the spout assembly 20 does not protrude forward (to the left in Figure 2) beyond the imaginary line X that is parallel to the body portion 12 of the container body 10 and extends from the body portion 12. For this reason, it may be required that the height of the cap 50 of the spout assembly 20, which will be described later, be less than or equal to a predetermined height. In other words, it may be required that the distance L from the inclined plate 15 on the top 14 of the container body 10 to the top portion 51 of the cap 50 be less than or equal to a predetermined length. 【0017】 spout assembly Next, the spout assembly 20 will be described. 【0018】 As shown in Figure 3, the spout assembly 20 includes a spout 30 attached to the container body 10 and a cap 50 fitted to the spout 30. Here, we will first describe the spout 30. 【0019】 (pour spout) As shown in Figures 3 to 5, the spout 30 has a cylindrical portion 31 with male threads 31a (see Figures 3 and 5) formed on its outer surface, a flange portion 32 located below the cylindrical portion 31, and a first projection 38 located on the flange portion 32. 【0020】 The cylindrical portion 31 includes a first cylindrical portion 33 and a second cylindrical portion 34 connected to the lower part of the first cylindrical portion 33. The first cylindrical portion 33 and the second cylindrical portion 34 each have a substantially cylindrical shape as a whole. The first cylindrical portion 33 is located radially inward from the second cylindrical portion 34. The male thread 31a described above is formed on the first cylindrical portion 33. The male thread 31a is an external thread and may be a right-hand thread. The female thread 52a of the cap 50, which will be described later, is screwed into this male thread 31a. The male thread 31a may be a multi-start thread. 【0021】 The flange portion 32 is located below the second cylindrical portion 34. The flange portion 32 is composed of a plate-like member that is substantially annular in shape when viewed from above. This flange portion 32 extends radially outward from the outer surface of the second cylindrical portion 34. 【0022】 The flange portion 32 is the part that is attached to the container body 10 (see Figure 3). In other words, the spout 30 is attached to the container body 10 by fixing this flange portion 32 to the part (inclined plate 15) around the opening 11 of the container body 10, for example, by heat sealing or ultrasonic sealing. 【0023】 The first projection 38 is provided on a base portion 39 which is provided on the flange portion 32. The base portion 39 is made up of a plate-like member that is substantially annular in shape when viewed from above. This base portion 39 extends radially outward from the outer surface of the second cylindrical portion 34. 【0024】 Multiple first projections 38 are arranged at intervals in the circumferential direction (for example, four). Each first projection 38 protrudes toward the band portion 60, which will be described later. The first projections 38 also extend radially outward from the outer surface of the second cylindrical portion 34. 【0025】 The first projections 38 are positioned at locations corresponding to the second projections 62 of the cap 50, which will be described later. Each first projection 38 and each second projection 62 face each other in the vertical direction (in the direction of the central axis CL of the cap 50). In plan view, one first projection 38 and the opposing second projection 62 do not necessarily have to overlap over the entire circumference; they may overlap only in a part of the circumference. For example, in this embodiment, in plan view, the second projection 62 of the cap 50, which will be described later, overlaps with a part of the first projection 38 of the spout 30 in the circumference. 【0026】 Here, as shown in Figures 5 and 6, the spout 30 is formed with a first ratchet portion 36 that restricts the rotation of the band portion 60 in the opening direction of the cap 50, and a first stopper 41 that restricts the rotation of the band portion 60 in the closing direction of the cap 50. In this embodiment, the first ratchet portion 36 and the first stopper 41 are made of the same material. However, the first ratchet portion 36 and the first stopper 41 may be made of different materials. 【0027】 The first ratchet portion 36 (first stopper 41) is formed on the outer surface of the cylindrical portion 31 and protrudes radially outward. Specifically, the first ratchet portion 36 is formed on the second cylindrical portion 34. In the illustrated example, the first ratchet portion 36 is connected to a first projection 38 provided on the flange portion 32 and is formed integrally with the first projection 38. The first ratchet portion 36 is the part that, when the container 1 with a spout is initially opened, contacts the band portion 60 with the second ratchet portion 66 (described later) and suppresses the rotation of the band portion 60. The first stopper 41 is the part that, when the container 1 with a spout is closed, contacts the band portion 60 with the second stopper 70 and suppresses the rotation of the band portion 60. In this embodiment, as shown in Figure 7, four first ratchet portions 36 (first stoppers 41) are provided. Furthermore, the first ratchet portion 36 does not necessarily have to be connected to the first projection portion 38, and a gap may be formed between the first ratchet portion 36 and the first projection portion 38 in the vertical direction. Also, the number of first ratchet portions 36 is arbitrary, and may be one to three or five or more. 【0028】 Furthermore, as shown in Figure 7, the first ratchet portion 36 includes a first surface 36a, a second surface 36b, and a third surface 36c. The first surface 36a extends from the outer surface of the cylindrical portion 31 in a direction substantially parallel to the radial direction. The second surface 36b is located on the side of the cap 50 that is opening (counterclockwise in a plan view) than the first surface 36a, and extends from the first surface 36a in a circumferential direction. The third surface 36c is located on the side of the cap 50 that is opening (counterclockwise in a plan view) than the second surface 36b, and extends from the second surface 36b in a direction substantially parallel to the radial direction to the outer surface of the cylindrical portion 31. Thus, because the first ratchet portion 36 includes a first surface 36a extending in a direction substantially parallel to the radial direction, when the cap 50 is rotated in the opening direction (counterclockwise in a plan view), the fourth surface 66a of the second ratchet portion 66 of the cap 50 (described later) is more likely to interfere with the first ratchet portion 36 (first surface 36a). As a result, even if the band portion 60 rotates together with the cap 50 when the cap 50 is rotated in the opening direction, the rotation of the band portion 60 can be restricted at a predetermined position. Therefore, when the container 1 with a spout is initially opened, the thin-walled portion 61 can be reliably broken. Furthermore, because the first ratchet portion 36 includes a third surface 36c extending in a direction substantially parallel to the radial direction, when the cap 50 is rotated in the closing direction (clockwise in a plan view), the second stopper 70 of the band portion 60 is more likely to interfere with the first stopper 41 (third surface 36c). This restricts the movement of the band portion 60 of the cap 50 in the closing direction when the cap 50 is rotated in the closing direction. 【0029】 Furthermore, as shown in Figures 5 and 6, a third stopper 40 is formed on the spout 30 to restrict the rotation of the cap cylinder portion 52 (described later) in the closing direction of the cap 50. This third stopper 40 is formed on the cylindrical portion 31. In the illustrated example, the third stopper 40 is connected to a male screw 31a and is integrally formed with the first cylindrical portion 33 of the cylindrical portion 31. By connecting the third stopper 40 to the male screw 31a in this way, the rigidity of the third stopper 40 can be increased. This third stopper 40 extends along the vertical direction and protrudes radially outward from the outer surface of the first cylindrical portion 33. The third stopper 40 is the part that, when closing the container 1 with a spout, comes into contact with the cap 50 by the fourth stopper 56 (described later) and suppresses the rotation of the cap 50. In the illustrated example, two third stoppers 40 are provided (see Figures 3 and 8). Furthermore, the third stopper 40 does not necessarily have to be connected to the male screw 31a. Also, the number of third stoppers 40 is arbitrary; for example, there may be one, or there may be three or more. Also, the number of third stoppers 40 may be the same as the number of threads in the male screw 31a, or it may be different from the number of threads in the male screw 31a. 【0030】 As shown in Figure 8, the third stopper 40 includes a locking surface 40a. In a plan view, the locking surface 40a extends along a direction substantially parallel to the radial direction. In this way, because the third stopper 40 includes a locking surface 40a, when the cap 50 is rotated in the closing direction (clockwise in a plan view), the fourth stopper 56 of the cap cylinder 52, which will be described later, is more likely to interfere with the locking surface 40a of the third stopper 40. This prevents the cap cylinder 52 from being overtightened when the cap 50 is rotated in the closing direction. Therefore, it is possible to prevent the container with a spout 1 from becoming difficult to open. In addition, because it is possible to prevent the cap cylinder 52 from being overtightened, the rotation angle of the cap cylinder 52 can be stabilized until the thin-walled portion 61 is broken when initially opening the container with a spout 1. 【0031】 Referring again to Figures 5 and 6, a first projection 37 is formed above the first ratchet portion 36. The first projection 37 is formed on the first cylindrical portion 33 and protrudes radially outward. The first projection 37 engages with the second projection 67 of the band portion 60, which will be described later, and plays a role in preventing the band portion 60 from being removed from the spout 30. This first projection 37 protrudes radially outward from the outer surface of the first cylindrical portion 33 and is formed around its entire circumference. This effectively prevents the band portion 60 from being removed from the spout 30. 【0032】 Furthermore, in a vertical cross-section, the upper surface of the first protrusion 37 slopes downward as it extends radially outward. This makes it easier for the second protrusion 67 of the band portion 60, described later, to overcome the first protrusion 37 when attaching the cap 50 to the spout 30. The shape of the first protrusion 37 can be any shape, as long as the second protrusion 67 can overcome the first protrusion 37 when attaching the cap 50 to the spout 30, and the shape prevents the band portion 60 from being removed from the spout 30 after the container 1 with the spout has been initially opened. For example, although not shown in the figures, in a vertical cross-section, the upper surface of the first protrusion 37 may be curved so as to be convex radially outward. 【0033】 Such a dispensing spout 30 is molded, for example, by injection molding. The dispensing spout 30 may also contain, for example, low-density polyethylene (LDPE), high-density polyethylene (HDPE), or medium-density polyethylene (MDPE). The resin used to mold the dispensing spout 30 may be a blend of the various resins mentioned above, or a resin containing biomass-derived components may be used. 【0034】 (cap) Next, the cap 50 will be described. As shown in Figures 3 and 4, the cap 50 has a top portion 51, a cap cylinder portion 52 extending from the top portion 51 and having a female thread 52a (see Figure 3) formed on its inner surface that screws onto the male thread 31a of the spout 30, and a band portion 60 connected to the cap cylinder portion 52 via a thin-walled portion 61. 【0035】 The top portion 51 has a roughly circular shape in plan view. Furthermore, a cylindrical stopper portion 53 (see Figure 3) that protrudes downward is provided on the lower surface of the top portion 51, radially inward from the cap cylinder portion 52. This stopper portion 53 is configured to fit into the cylindrical portion 31 of the spout 30. 【0036】 The cap cylinder portion 52 of the cap 50 has a generally cylindrical shape. Multiple knurling grooves 54 (see Figure 4) are formed on the outer surface of the cap cylinder portion 52, which function as an anti-slip surface when the cap 50 is held in the hand. Each knurling groove 54 protrudes radially outward from the cap cylinder portion 52 and extends parallel to the vertical direction of the cap cylinder portion 52 (vertical direction in Figure 3). As described above, a female thread 52a is formed on the inner surface of the cap cylinder portion 52. The female thread 52a is an internal thread and may be a right-hand thread. The cap 50 is attached to the spout 30 by screwing this female thread 52a into the male thread 31a of the cylindrical portion 31. The female thread 52a may be a multi-start thread. 【0037】 Furthermore, as shown in Figures 3, 6, and 8, a fourth stopper 56 is formed on the cap cylinder portion 52, which engages with the third stopper 40 of the spout 30. In the illustrated example, the fourth stopper 56 is made up of the female screw 52a described above. This fourth stopper 56 is a part that suppresses the rotation of the cap cylinder portion 52 by contacting the third stopper 40 in the circumferential direction. In other words, the fourth stopper 56 is a part that suppresses the rotation of the cap cylinder portion 52 by contacting the third stopper 40 of the spout 30 when closing the container 1 with a spout. This prevents the cap cylinder portion 52 from being overtightened when the cap 50 is rotated in the closing direction, and prevents the container 1 with a spout from becoming difficult to open. Also, because it prevents the cap cylinder portion 52 from being overtightened, the rotation angle of the cap cylinder portion 52 can be stabilized until the thin-walled portion 61 is broken when initially opening the container 1 with a spout. In this embodiment, as shown in Figure 8, two fourth stoppers 56 are provided. The number of fourth stoppers 56 is arbitrary; for example, there may be one, or there may be three or more. 【0038】 As shown in Figure 8, the fourth stopper 56 includes a locking surface 56a. In a plan view, the locking surface 56a extends along a direction substantially parallel to the radial direction. In this way, because the fourth stopper 56 includes a locking surface 56a, when the cap 50 is rotated in the closing direction (clockwise in a plan view), the fourth stopper 56 of the cap cylinder 52 is more likely to interfere with the locking surface 40a of the third stopper 40. 【0039】 Furthermore, as shown in Figures 4 and 9, a second claw portion 55b protruding downward is formed on the lower surface of the cap cylinder portion 52. This second claw portion 55b engages with the first claw portion 62a, which will be described later, and plays a role in preventing the thin-walled portion 61 from unintentionally breaking. In this embodiment, a plurality (for example, four) of second claw portions 55b are formed on the lower surface of the cap cylinder portion 52. The number of second claw portions 55b is arbitrary and may be three or fewer, or five or more. 【0040】 The second claw portion 55b may overlap the first claw portion 62a, which will be described later, in the vertical direction. The second claw portion 55b may also be in contact with the band portion 60. 【0041】 Next, the band portion 60 of the cap 50 will be described. The band portion 60 is configured to be separable from the cap cylinder portion 52 when the cap 50 is rotated in the opening direction, by the thin-walled portion 61 being cut. In this case, the band portion 60 is made of a ring-shaped pilfer band and is a type of band that maintains its annular shape without breaking in a part of the circumferential direction even after opening. As shown in Figures 3, 4, 6, and 9, the band portion 60 is connected to the cap cylinder portion 52 via the thin-walled portion 61, and a gap is formed between the band portion 60 and the cap cylinder portion 52 in the vertical direction, except for the area where the second claw portion 55b is provided. 【0042】 The thin-walled portion 61 is provided between the cap cylinder portion 52 and the band portion 60. The thin-walled portion 61 is a thin, columnar part. In this embodiment, multiple (for example, 8) thin-walled portions 61 are provided at intervals in the circumferential direction. Each thin-walled portion 61 is also breakable, and the cap cylinder portion 52 and the band portion 60 can be easily separated at the thin-walled portion 61. In this case, the broken thin-walled portion 61 may remain on the band portion 60 side. The device is configured so that it is possible to determine whether the cap 50 has been improperly opened by checking whether the thin-walled portion 61 has been broken. 【0043】 In this embodiment, as shown in Figure 3, the band portion 60 is inserted into the opening 11 of the container body 10. This allows the height of the cap cylinder portion 52 of the cap 50 to be increased even when the height of the cap 50 is set to a predetermined height or less. That is, as described above, the distance L (see Figure 2) from the inclined plate 15 on the top 14 of the container body 10 to the top 51 of the cap 50 may be required to be less than or equal to a predetermined length. For example, if the container body 10 is attached below the band portion 60, in order to keep the distance L below a predetermined length, the sum of the height of the cap cylinder portion 52 and the height of the band portion 60 may be required to be less than or equal to a predetermined height. In contrast, if the band portion 60 is inserted into the opening 11 of the container body 10, in order to keep the distance L below a predetermined length, the sum of the height of the cap cylinder portion 52 and the height of the part of the band portion 60 that is exposed outward from the inclined plate 15 may be required to be less than or equal to a predetermined height. Therefore, when the band portion 60 is inserted into the opening 11 of the container body 10, the height of the cap cylinder portion 52 can be increased compared to when the container body 10 is attached below the band portion 60. As a result, even when the cap 50 has the band portion 60, a decrease in the ease of opening the cap 50 can be suppressed. 【0044】 As shown in Figures 4, 6, and 9, the band portion 60 includes a second projection 62 facing the first projection 38. The second projection 62 is located on the lower surface of the band portion 60. Multiple (for example, four) of these second projections 62 are arranged at intervals in the circumferential direction. Each of the second projections 62 protrudes toward the spout 30. 【0045】 The second projections 62 of the band portion 60 are positioned to correspond to the first projections 38 of the spout 30. Therefore, as described above, each first projection 38 and each second projection 62 are opposite each other in the vertical direction (in the direction of the central axis CL of the cap 50). 【0046】 In this embodiment, after separating the band portion 60 from the cap 50, the second projection 62 falls to a position where it does not face the first projection 38 of the spout 30. In other words, the second projection 62 falls between the first projections 38. This increases the amount of downward movement (fall) of the band portion 60. As a result, it becomes visually clear that the capped container 1 has been opened. 【0047】 Furthermore, as shown in Figures 6, 7, and 9, the band portion 60 is formed with a second ratchet portion 66 that engages with the first ratchet portion 36 and a second stopper 70 that engages with the first stopper 41. The second ratchet portion 66 is the part that breaks the thin-walled portion 61 by engaging with the first ratchet portion 36 of the spout 30 in the circumferential direction. In other words, the second ratchet portion 66 is the part that abuts against the first ratchet portion 36 of the spout 30 when the container 1 with a spout is initially opened, thereby suppressing the rotation of the band portion 60. In this way, by providing the second ratchet portion 66 on the inner surface of the band portion 60, the thin-walled portion 61 can be reliably broken. In this embodiment, as shown in Figure 7, four second ratchet portions 66 are provided. The number of second ratchet portions 66 is arbitrary and may be one to three or five or more. 【0048】 The second ratchet portion 66 is formed on the inner surface of the band portion 60. The second ratchet portion 66 also protrudes radially inward. As shown in Figure 9, the second ratchet portion 66 extends from the lower surface of the second projection portion 67 of the band portion 60 (described later) to the lower surface of the second projection portion 62 of the band portion 60. The second ratchet portion 66 may be formed only in a portion of the area from the lower surface of the second projection portion 67 to the lower surface of the second projection portion 62 in the vertical direction. 【0049】 Furthermore, as shown in Figure 7, the second ratchet portion 66 includes a fourth surface 66a, a fifth surface 66b, and a sixth surface 66c. The fourth surface 66a extends from the inner surface of the band portion 60 along a direction substantially parallel to the radial direction. The fifth surface 66b is located on the side of the cap 50 closer to the closing direction (clockwise in a plan view) than the fourth surface 66a and extends from the fourth surface 66a along the circumferential direction. The sixth surface 66c is located on the side of the cap 50 closer to the closing direction (clockwise in a plan view) than the fifth surface 66b and extends from the fifth surface 66b to the inner surface of the band portion 60. Thus, because the second ratchet portion 66 includes a fourth surface 66a extending in a direction substantially parallel to the radial direction, when the cap 50 is rotated in the opening direction (counterclockwise in a plan view), the band portion 60 (fourth surface 66a) is more likely to interfere with the first surface 36a of the first ratchet portion 36. Furthermore, because the second ratchet portion 66 includes a sixth surface 66c, when the cap 50 is rotated in the closing direction (clockwise in a plan view), the second ratchet portion 66 is more likely to pass over the first ratchet portion 36. 【0050】 Next, the second stopper 70 will be described. The second stopper 70 is a part that, when closing the container 1 with a spout, contacts the first stopper 41 of the spout 30 to suppress the rotation of the band portion 60. In the illustrated example, four second stoppers 70 are provided. The number of second stoppers 70 is arbitrary; for example, there may be one to three or more, or five or more. 【0051】 The second stopper 70 is formed on the inner surface of the band portion 60. The second stopper 70 also protrudes radially inward. As shown in Figure 9, the second stopper 70 extends from the lower surface of the second projection 67 of the band portion 60 (described later) to the lower surface of the second projection 62 of the band portion 60. The second stopper 70 may be formed only in a portion of the area from the lower surface of the second projection 67 to the lower surface of the second projection 62 in the vertical direction. 【0052】 Furthermore, as shown in Figure 7, the second stopper 70 includes a seventh surface 70a, an eighth surface 70b, and a ninth surface 70c. The seventh surface 70a extends from the inner surface of the band portion 60 along a direction substantially parallel to the radial direction. The eighth surface 70b is located on the side of the cap 50 closer to the opening direction (counterclockwise in a plan view) than the seventh surface 70a, and extends from the seventh surface 70a along the circumferential direction. The ninth surface 70c is located on the side of the cap 50 closer to the opening direction (counterclockwise in a plan view) than the eighth surface 70b, and extends from the eighth surface 70b to the inner surface of the band portion 60. Thus, because the second stopper 70 includes a seventh surface 70a extending in a direction substantially parallel to the radial direction, when the cap 50 is rotated in the closing direction (clockwise in a plan view), the band portion 60 (seventh surface 70a) is more likely to interfere with the first surface 36a of the first ratchet portion 36 (first stopper 41). Furthermore, because the second stopper 70 includes a ninth surface 70c, when the cap 50 is rotated in the opening direction (counterclockwise in a plan view), the second stopper 70 is more likely to overcome the first ratchet portion 36. 【0053】 Furthermore, as shown in Figures 4 and 9, a first claw portion 62a protruding upward is formed on the upper surface of the band portion 60. This first claw portion 62a engages with the second claw portion 55b described above, and plays a role in preventing the thin-walled portion 61 from unintentionally breaking. 【0054】 In this embodiment, a plurality (for example, four) of first claw portions 62a are formed on the upper surface of the band portion 60. The number of first claw portions 62a is arbitrary and may be three or fewer, or five or more. 【0055】 The first claw portion 62a does not come into contact with the cap cylinder portion 52, and a gap is formed between the first claw portion 62a and the cap cylinder portion 52 in the vertical direction. 【0056】 The first claw portion 62a and the second claw portion 55b described above may overlap each other in the vertical direction. This allows the second claw portion 55b to interfere with the first claw portion 62a when the cap 50 is rotated in the closing direction (clockwise in a plan view). Therefore, when attaching the cap 50 to the spout 30, even if the second stopper 70 of the band portion 60 comes into contact with the first stopper 41 of the spout 30 before the fourth stopper 56 of the cap cylinder portion 52 comes into contact with the third stopper 40 of the spout 30, the rotation of the cap cylinder portion 52 relative to the band portion 60 can be suppressed. In other words, even if the second stopper 70 of the band portion 60 contacts the first stopper 41 of the spout 30 before the fourth stopper 56 of the cap cylinder portion 52 contacts the third stopper 40 of the spout 30, the second claw portion 55b interferes with the first claw portion 62a, thereby preventing the cap cylinder portion 52 from rotating relative to the band portion 60. This prevents the thin-walled portion 61 from unintentionally breaking. 【0057】 As shown in Figure 10, a gap may be formed in the circumferential direction between the first claw portion 62a and the second claw portion 55b of the cap 50 before it is attached to the spout 30. In this case, the second claw portion 55b may be in contact with the band portion 60 of the cap 50 after it has been removed from the mold of an injection molding machine (not shown). On the other hand, as described above, the cap 50 can be manufactured, for example, by injection molding. In this case, as shown in Figure 11, the first claw portion 62a and the second claw portion 55b, which are formed at positions corresponding to the parting line PL of the mold, may be in contact with each other in the circumferential direction of the cap 50 after it has been removed from the mold of an injection molding machine (not shown). In this case, a gap may be formed in the vertical direction between the second claw portion 55b and the band portion 60. In this way, by configuring the first claw portion 62a and the second claw portion 55b to be in contact with each other in the circumferential direction, the first claw portion 62a and the second claw portion 55b can be formed at positions corresponding to the parting line PL. Furthermore, in this case, it becomes easier to arrange the multiple first claw portions 62a at equal intervals in the circumferential direction. Similarly, it becomes easier to arrange the multiple second claw portions 55b at equal intervals in the circumferential direction. As a result, when the cap cylinder portion 52 attempts to rotate relative to the band portion 60, the rotational force that the second claw portions 55b apply to the first claw portions 62a can be distributed substantially evenly among the multiple first claw portions 62a. Therefore, distortion in the band portion 60 can be suppressed. 【0058】 Referring again to Figure 6, a second projection 67 is formed on the band portion 60. The second projection 67 is configured to engage with the first projection 37 of the spout 30 from below. After the container 1 with the spout is initially opened, the second projection 67 engages with the first projection 37 of the spout 30 and plays a role in preventing the band portion 60 from being removed from the spout 30. This second projection 67 protrudes radially inward from the inner surface of the band portion 60 and is provided in multiples (for example, four) at intervals in the circumferential direction. 【0059】 In the illustrated example, in a vertical cross-section, the upper surface of the second protrusion 67 slopes downward as it moves radially inward. This makes it easier to remove the cap 50 from the mold when removing it from the mold of an injection molding machine (not shown). On the other hand, the lower surface of the second protrusion 67 extends horizontally in a vertical cross-section. The shape of the second protrusion 67 can be any shape, as long as it allows the cap 50 to be removed from the mold, allows the second protrusion 67 to overcome the first protrusion 37 when attaching the cap 50 to the spout 30, and prevents the band portion 60 from being removed from the spout 30 after the container 1 with the spout has been initially opened. 【0060】 Furthermore, referring to Figures 3, 4, 6, and 9, a third projection 63 is formed below the first claw portion 62a, projecting radially outward. The third projection 63 protrudes radially outward from the outer surface of the band portion 60. This third projection 63 plays a role in preventing the spout assembly 20 from being removed from the container body 10 when the spout assembly 20 is attached to the container body 10. In other words, the third projection 63 and the flange portion 32 of the spout 30 sandwich the portion around the opening 11 of the container body 10, thereby preventing the spout assembly 20 from being removed from the container body 10 (see Figure 3). 【0061】 As shown in Figure 6, in the vertical cross-section, the upper surface of the third projection 63 is inclined downward as it extends radially outward. This makes it easier for the portion of the container body 10 around the opening 11 to pass over the third projection 63 of the cap 50 when the spout assembly 20 is attached to the container body 10. 【0062】 The top portion 51, the cap cylinder portion 52, and the band portion 60 of such a cap 50 are integrally molded from synthetic resin. In this case, the cap 50 may be molded by, for example, injection molding. The cap 50 may also contain, for example, polypropylene (PP) or high-density polyethylene (HDPE). The resin used to mold the cap 50 may be a blend of the various resins mentioned above, or a resin containing biomass-derived components may be used. 【0063】 Next, the operation according to this embodiment will be described. Here, the manufacturing method and opening method of the container 1 with a spout will be explained with reference to Figures 12A(a)-(b), 12B(a)-(b), 12C(a)-(b), 12D(a)-(b), 13(a)-(b), 14(a)-(b), and 15(a)-(b). 【0064】 First, prepare the spout 30 and cap 50 of the spout assembly 20. The spout 30 may be manufactured by injection molding using, for example, an injection molding machine (not shown). 【0065】 Furthermore, the cap 50 may be manufactured, for example, as follows. 【0066】 First, as shown in Figure 12A(a), a mold 90 is prepared, which includes a cavity mold 91, a core 92, a pair of slides 93, and a cylindrical dispensing part 94. Of these, the cavity mold 91 has a gate (injection port) 91a formed therein for injecting the injection resin. 【0067】 Next, the core 92 is placed inside the cavity mold 91, and a pair of slides 93 and a cylindrical discharge part 94 are attached. In this way, as shown in Figure 12A(b), the cavity mold 91, the core 92, the pair of slides 93, and the cylindrical discharge part 94 are clamped together. 【0068】 Next, as shown in Figure 12B(a), the injection resin is injected into the mold 90. At this time, the injection resin is injected from the gate 91a into the space formed by the cavity mold 91 and the core 92. As the injection resin, for example, polypropylene, polyethylene, etc. can be used. 【0069】 The injected resin enters the cavity mold 91 and the pair of slides 93 and the core 92, and this injected resin forms the cap cylinder portion 52 and the band portion 60 of the cap 50. 【0070】 Next, as shown in Figure 12B(b), the cavity mold 91 of the mold 90 is removed from the manufactured cap 50. At this time, the pair of slides 93 are slid in a direction that separates them from each other. 【0071】 Next, as shown in Figure 12C(a), the core 92 is removed from the cap 50. 【0072】 Next, as shown in Figure 12C(b), the cap 50 is removed by pressing the cylindrical dispensing part 94 against the cap 50. At this time, the band portion 60 is pressed by the cylindrical dispensing part 94, and the thin-walled portion 61 is deformed. In this embodiment, a first claw portion 62a protruding upward is formed on the upper surface of the band portion 60, and a second claw portion 55b protruding downward is formed on the lower surface of the cap cylinder portion 52. As a result, when the band portion 60 is pressed by the cylindrical dispensing part 94, the first claw portion 62a of the band portion 60 contacts the cap cylinder portion 52, and the second claw portion 55b of the cap cylinder portion 52 contacts the band portion 60. Therefore, excessive deformation of the thin-walled portion 61 can be suppressed, and unintended breakage of the thin-walled portion 61 can be suppressed. In this way, the cap 50 is obtained. When the cap 50 is removed from the mold 90, the first claw portion 62a of the band portion 60 and the cap cylinder portion 52 may be in contact with each other, or they may be spaced apart. Similarly, when the cap 50 is removed from the mold 90, the second claw portion 55b of the cap cylinder portion 52 and the band portion 60 may be in contact with each other, or they may be spaced apart. 【0073】 Next, the manufactured cap 50 is attached to the spout 30. At this time, as shown in Figure 12D(a), the cap 50 is rotated relative to the spout 30, thereby screwing the female thread 52a of the cap 50 onto the male thread 31a of the spout 30. Here, as described above, a first stopper 41 and a third stopper 40 are formed on the spout 30 (see Figure 3, etc.). In addition, a second stopper 70 that engages with the first stopper 41 is formed on the band portion 60. Furthermore, a fourth stopper 56 that engages with the third stopper 40 is formed on the cap cylinder portion 52. As a result, when the cap 50 is rotated in the closing direction, the rotation of the cap cylinder portion 52 and the band portion 60 is restricted at a predetermined position. In this way, as shown in Figure 12D(b), the cap 50 is attached to the spout 30, and the spout assembly 20 is obtained. 【0074】 In parallel with the fabrication of the spout assembly 20, the container body 10, which is provided with the opening 11, is prepared. 【0075】 Next, the spout assembly 20 is attached to the container body 10. In the filling line, when attaching the spout assembly 20 to the container body 10, multiple spout assemblies 20 may be transported and stored together in various orientations. In this embodiment, however, the spout 30 has a first projection 38 located on the flange portion 32. The band portion 60 also includes a second projection 62 that faces the first projection 38. This makes it difficult for the flat flange portion 32 to get stuck in the gap between the first projection 38 and the second projection 62 of other spout assemblies 20. As a result, it is possible to suppress the spout assemblies 20 from getting stuck together and to suppress a decrease in productivity (see Figure 13(a)). In contrast, as a comparative example, if the gap between the base portion 39 of the spout 30 and the band portion 60 of the cap 50 is horizontal and the first projection 38 and the second projection 62 are not provided, the flange portion 32 may fit into the gap, and the spout assemblies 20 may become stuck together (see Figure 13(b)). In this case, it will be necessary to stop the filling line and separate the spout assemblies 20, which may reduce production efficiency. 【0076】 When attaching the spout assembly 20 to the container body 10, first, as shown in Figure 14(a), the spout assembly 20 is inserted into the opening 11 of the container body 10, and the spout assembly 20 is attached to the container body 10. 【0077】 At this time, as shown in Figure 14(b), the band portion 60 is inserted into the opening 11 of the container body 10. Also, the portion of the container body 10 around the opening 11 is positioned between the third protrusion 63 of the cap 50 and the flange portion 32 of the spout 30. 【0078】 Then, the spout 30 of the spout assembly 20 is fixed to the area around the opening 11 of the container body 10 via the flange portion 32 by heat sealing or ultrasonic sealing. In this way, the container 1 with a spout shown in Figure 1 is obtained. 【0079】 Subsequently, the contents are filled into the top 14 of the container body 10 (see Figure 1), and the inclined plates 15 of the top 14 are bonded or welded (heat-sealed) to each other via the adhesive tab 17, thereby obtaining a paper container (container with a spout) filled with contents as a product. 【0080】 When a user uses the container 1 with a spout, as shown in Figure 15(a), the user rotates the cap 50 in the opening direction (counterclockwise when viewed from above). This causes the cap cylinder portion 52 and the band portion 60 to rotate relative to the spout 30. As described above, a first ratchet portion 36 is formed on the outer surface of the cylindrical portion 31, projecting radially outward (see Figure 3, etc.). In addition, a second ratchet portion 66 is formed on the inner surface of the band portion 60, projecting radially inward and engaging with the first ratchet portion 36 in the circumferential direction. As a result, even if the band portion 60 rotates together with the cap cylinder portion 52 when the cap 50 is rotated in the opening direction, the rotation of the band portion 60 is restricted at a predetermined position. Consequently, by rotating the cap 50 in the opening direction, the thin-walled portion 61 connecting the cap cylinder portion 52 and the band portion 60 breaks. In this way, the cap cylinder portion 52 of the cap 50 can be removed from the spout 30. Afterward, the user removes the contents from the container 1 with the spout, and if necessary, reattaches the cap cylinder 52 to the spout 30 (see Figure 15(b)). Note that in Figures 15(a) and 15(b), the container body 10 is omitted from the illustration for clarity. 【0081】 As described above, when the user rotates the cap 50 in the opening direction, the band portion 60 rotates relative to the spout 30. As a result, as shown in Figure 15(b), after separating the band portion 60 from the cap 50, the second projection 62 falls to a position where it does not face the first projection 38 of the spout 30. In other words, the second projection 62 falls between the first projections 38. This increases the amount of downward movement (fall) of the band portion 60, making it visually clear that the capped container 1 has been opened. 【0082】 As described above, according to this embodiment, the spout assembly 20 comprises a spout 30 having a cylindrical portion 31 with a male screw 31a formed on its outer surface, a flange portion 32 located below the cylindrical portion 31, and a first projection 38 located on the flange portion 32; a cap 50 having a top portion 51, a cap cylinder portion 52 extending from the top portion 51 and having a female screw 52a formed on its inner surface that screws onto the male screw 31a of the spout 30; and a band portion 60 connected to the cap cylinder portion 52 via a thin-walled portion 61 and including a second projection 62 facing the first projection 38. In this way, by having a band portion 60 connected to the cap cylinder portion 52 via a thin-walled portion 61, it is possible to prevent tampering with the contents. 【0083】 Furthermore, the spout 30 is provided with a first ratchet portion 36 that restricts the rotation of the band portion 60 in the opening direction of the cap 50, and a first stopper 41 that restricts the rotation of the band portion 60 in the closing direction of the cap 50. In addition, the band portion 60 is provided with a second ratchet portion 66 that engages with the first ratchet portion 36, and a second stopper 70 that engages with the first stopper 41. Thus, because the spout 30 is provided with a first ratchet portion 36 and the band portion 60 is provided with a second ratchet portion 66 that engages with the first ratchet portion 36, the thin-walled portion 61 can be reliably broken when the container 1 with the spout is initially opened. In particular, even when the band portion 60 is inserted into the opening 11 of the container body 10, the thin-walled portion 61 can be reliably broken when the container 1 with the spout is initially opened. Thus, in this embodiment, since the band portion 60 can be inserted into the opening 11 of the container body 10, the height of the cap cylinder portion 52 of the cap 50 can be increased. As a result, a decrease in the ease of opening the cap 50 can be suppressed, and the cap 50 can be opened easily. 【0084】 Furthermore, since a first stopper 41 is formed on the spout 30 and a second stopper 70 that engages with the first stopper 41 is formed on the band portion 60, it is possible to prevent the cap cylinder portion 52 from being overtightened when the cap 50 is rotated in the closing direction. This prevents the container with spout 1 from becoming difficult to open. As a result, the container with spout 1 can be easily opened. Also, since it is possible to prevent the cap cylinder portion 52 from being overtightened, the rotation angle of the cap cylinder portion 52 can be stabilized until the thin-walled portion 61 is broken when initially opening the container with spout 1. In addition, since it is possible to prevent the cap cylinder portion 52 from being overtightened, deformation of the flange portion 32 caused by the tightening of the cap cylinder portion 52 can be suppressed. 【0085】 Furthermore, according to this embodiment, the band portion 60 can be separated from the cap cylinder portion 52 by the thin-walled portion 61 being cut when the cap 50 is rotated in the opening direction. After the band portion 60 is separated from the cap cylinder portion 52, the second projection 62 falls to a position where it does not face the first projection 38. This increases the amount of downward movement (fall) of the band portion 60. As a result, it is easy to visually determine that the capped container 1 has been opened. 【0086】 Furthermore, according to this embodiment, a third stopper 40 is formed on the spout 30 to restrict the rotation of the cap cylinder portion 52 in the closing direction of the cap 50. In addition, a fourth stopper 56 is formed on the cap cylinder portion 52 that engages with the third stopper 40. Even in this case, when the cap 50 is rotated in the closing direction, it is possible to prevent the cap cylinder portion 52 from being overtightened. This makes it possible to prevent the container with a spout 1 from becoming difficult to open. Also, because it is possible to prevent the cap cylinder portion 52 from being overtightened, the rotation angle of the cap cylinder portion 52 can be stabilized until the thin-walled portion 61 is broken when initially opening the container with a spout 1. Furthermore, because it is possible to prevent the cap cylinder portion 52 from being overtightened, deformation of the flange portion 32 caused by the tightening of the cap cylinder portion 52 can be suppressed. 【0087】 Furthermore, according to this embodiment, a first claw portion 62a protruding upward is formed on the upper surface of the band portion 60, and a second claw portion 55b protruding downward is formed on the lower surface of the cap cylinder portion 52. Also, the first claw portion 62a and the second claw portion 55b overlap each other in the vertical direction. As a result, when closing the container 1 with a spout, even if the second stopper 70 of the band portion 60 comes into contact with the first stopper 41 of the spout 30 before the fourth stopper 56 of the cap cylinder portion 52 comes into contact with the third stopper 40 of the spout 30, the rotation of the cap cylinder portion 52 relative to the band portion 60 can be suppressed. Therefore, unintentional breakage of the thin-walled portion 61 can be suppressed. 【0088】 In the embodiment described above, when attaching the cap 50 to the spout 30, an example was described in which the female thread 52a of the cap 50 is screwed onto the male thread 31a of the spout 30 by rotating the cap 50 relative to the spout 30. However, the embodiment is not limited to this. For example, when attaching the cap 50 to the spout 30, the female thread 52a may be screwed onto the male thread 31a by pressing it into place. 【0089】 In this modified example, when manufacturing the spout assembly 20, as shown in Figure 16(a), the female thread 52a is screwed onto the male thread 31a by pressing it into place. In this case, the cap 50 is not rotated relative to the spout 30, but rather pressed onto the spout 30 from above. As a result, as shown in Figure 16(b), the cap 50 is attached to the spout 30, and the spout assembly 20 is obtained. 【0090】 According to this modified example, when attaching the cap 50 to the spout 30, the female thread 52a is screwed onto the male thread 31a by pressing it into place. That is, when attaching the cap 50 to the spout 30, the cap 50 is attached to the spout 30 without rotating it relative to the spout 30. This more effectively prevents the second ratchet portion 66 of the cap 50 from interfering with the first ratchet portion 36 of the spout 30 when attaching the cap 50 to the spout 30. Therefore, it is more effectively possible to prevent the thin-walled portion 61 from unintentionally breaking. Furthermore, by attaching the cap 50 to the spout 30 without rotating it relative to the spout 30, the cap 50 can be attached to the spout 30 so that the circumferential position of the second ratchet portion 66 relative to the first ratchet portion 36 is at a desired position. Therefore, it is possible to suppress variations in the opening angle of the spout assembly 20. 【0091】 It is also possible to combine the multiple components disclosed in each of the above embodiments and modifications as needed. Alternatively, some components may be removed from all the components shown in each of the above embodiments and modifications. As an example, a case has been described in which a first stopper 41 and a third stopper 40 are provided on the cylindrical portion 31, a second stopper 70 is provided on the band portion 60, and a fourth stopper 56 is provided on the cap cylinder portion 52. However, it is not limited to this, and the third stopper 40 is not required on the cylindrical portion 31, nor is the fourth stopper 56 required on the cap cylinder portion 52. Even in this case, by providing the first stopper 41 on the cylindrical portion 31 and the second stopper 70 on the band portion 60, it is possible to prevent the cap 50 from being overtightened when the cap 50 is rotated in the closing direction. [Explanation of symbols] 【0092】 1. Container with spout 10 Container body 11 Aperture 20 Spout assembly 30 spout 31 Cylindrical section 31a Male screw 32 Flange section 36. First ratchet section 38 1st protrusion 40 Third Stopper 41 First Stopper 50 caps 51 Heavenly Beings 52 Cap cylinder 52a Female thread 55b Second claw portion 56. Fourth Stopper 60 Band Section 61 Thin-walled section 62 2nd protrusion 62a First claw portion 66. Second ratchet section 70 Second Stopper

Claims

[Claim 1] A spout having a cylindrical portion with male threads formed on its outer surface, a flange portion located below the cylindrical portion, and a first projection portion located on the flange portion, The cap comprises a top portion, a cap cylinder portion extending from the top portion and having a female thread formed on its inner surface that screws onto the male thread of the spout, and a band portion connected to the cap cylinder portion via a thin-walled portion and including a second projection facing the first projection. The spout is provided with a first ratchet portion that restricts the rotation of the band portion of the cap in the opening direction, and a first stopper that restricts the rotation of the band portion of the cap in the closing direction. The band portion is formed with a second ratchet portion that engages with the first ratchet portion and a second stopper that engages with the first stopper. The spout assembly is composed of the same material as the first ratchet portion and the first stopper. [Claim 2] The spout assembly according to claim 1, wherein the band portion can be separated from the cap cylinder portion by the thin-walled portion being cut when the cap is rotated in the opening direction, and after the band portion is separated, the second projection falls to a position that does not face the first projection. [Claim 3] The spout assembly according to claim 1, wherein a third stopper is formed on the spout for restricting the rotation of the cap cylinder portion in the closing direction of the cap, and a fourth stopper is formed on the cap cylinder portion for engaging with the third stopper. [Claim 4] The spout assembly according to claim 1, wherein a first claw portion protruding upward is formed on the upper surface of the band portion, and a second claw portion protruding downward is formed on the lower surface of the cap cylinder portion, and the first claw portion and the second claw portion overlap each other in the vertical direction. [Claim 5] A container body with an opening, A container with a spout, comprising a spout assembly according to any one of claims 1 to 4, which is attached to the container body and closes the opening.

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