Container with stopper cap

Abstract

To provide a container with a plugging cap that makes it easy to separate an outer shell from an inner bag at the time of disposal.SOLUTION: A container with a plugging cap has a container body and a plugging cap. The container body has an outer shell and an inner bag that is laminated on the inner side of the outer shell and forms a space to contain contents. The inner bag is formed such that the inner bag detaches from the outer shell and contracts as the contents decrease. The plugging cap is attached to a mouth portion of the container body. The plugging cap has an inner ring that is in pressure contact with the inner bag inside the mouth portion and secures the plugging cap to the container body. Thereby, when the plugging cap is rotated in a circumference direction of the mouth portion with respect to the mouth portion, the inner bag rotates by following the inner ring due to frictional forces between the inner bag and the inner ring at the mouth portion, causing a separation between the inner bag and the outer shell.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Patent document 1 discloses a delaminating container that is composed of an outer layer container that is exposed to the outside air and has an air inlet section, and an inner layer container that is peelably laminated to the outer layer, and in which air is circulated between the outer layer and the inner layer from the air inlet section, and the contents inside the inner layer container are discharged by peeling and shrinking the inner layer container from the outer layer container, and in which the neck portion of the outer layer container is detachable, and the inner layer container can be disposed of in a state separated from the outer layer container together with the neck portion of the outer layer container.

[0003] Patent Document 2 discloses a multi-layer container having a mouth and a body, as well as an outer layer and an inner layer, characterized in that a screw thread is formed on the inner surface of the mouth and a cap is attached by screwing onto the screw thread on the inner surface.

[0004] Patent document 3 discloses a synthetic resin cap having a top plate portion and a tubular portion hanging down from its periphery, in which an annular inner seal portion that is fitted into the mouth of a container is formed to protrude from the inner top surface of the top plate, and a thin-walled portion that is thinner than other portions is formed near the base end of the inner seal portion. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-212155 [Patent Document 2] Japanese Patent Application Publication No. 2018-52578 [Patent Document 3] Japanese Patent Application Laid-Open No. 2001-328653 Summary of the Invention [Problem to be solved by the invention]

[0006] A double-layered container consisting of an outer shell and an inner bag peelably laminated to the outer shell is known as a container for storing food, medicines, quasi-drugs, cosmetics, etc. Such a double-layered container is configured so that, during use, the inner bag peels off from the outer shell and shrinks as the contents are discharged outside the container.

[0007] The above-mentioned double-layered container has a problem in that when the container is discarded after the contents have been used up, some of the contents remain, making it difficult to recycle the container as a plastic resource. Therefore, there is a demand for a structure that is easy to recycle, specifically a structure that allows the outer shell and inner bag to be separated when discarding.

[0008] Furthermore, stopper caps are known as caps for containers containing foods, medicines, quasi-drugs, cosmetics, and the like.

[0009] An object of the present invention is to provide a container with a stopper cap that allows the outer shell and inner bag to be easily separated when discarded. [Means for solving the problem]

[0010] The present inventors have found that the above object can be achieved by the following means: <<Aspect 1>> a container body having an outer shell and an inner bag laminated inside the outer shell and forming a space for accommodating contents, the inner bag being formed so that the inner bag separates from the outer shell and shrinks as the contents decrease; a stopper cap attached to the mouth of the container body; A container with a stopper cap, comprising: The stopper cap has an inner ring that is pressed against the inner bag inside the mouth to fix the stopper cap to the container body, and as a result, when the stopper cap is rotated in the circumferential direction of the mouth relative to the mouth, the frictional force between the inner bag and the inner ring at the mouth causes the inner bag to rotate following the inner ring, causing separation between the inner bag and the outer shell. Container with stopper cap. <<Aspect 2>> the inner bag is secured to the outer shell at at least a portion of the container body; and When the stoppering cap is rotated in the circumferential direction of the mouth portion relative to the mouth portion, the frictional force between the inner bag and the inner ring causes the inner bag to rotate following the inner ring at the mouth portion, causing separation between the inner bag and the outer shell, and further releasing the engagement between the outer shell and the inner bag. A container with a stopper cap according to embodiment 1. Aspect 3 the mouth portion has a minimum inner diameter portion; and The stopper cap has an inner ring inside the mouth portion at the smallest inner diameter portion, which is in pressure contact with the inner bag to fix the stopper cap to the container body. A container with a stopper cap according to aspect 1 or 2. Aspect 4 A container with a stopper cap as described in aspect 3, wherein the ratio of the height length of the portion of the smallest inner diameter portion where the inner ring is pressed against the height length of the entire smallest inner diameter portion is more than 50% and not more than 100%. Aspect 5 When the stoppering cap is separated from the container body, the outer diameter of the inner ring is 2.5% to 3.5% larger than the inner diameter of the opening. A container with a stopper cap according to any one of aspects 1 to 4. Aspect 6 the inner ring has a narrow contact area and a wide contact area in a circumferential direction; a length of a portion of the narrow contact region in a height direction of the inner ring that is in pressure contact with the narrow contact region is smaller than a length of a portion of the wide contact region in a height direction of the inner ring; A container with a stopper cap according to any one of aspects 1 to 5. Aspect 7 the narrow contact area has a recess in the outer radial direction of the inner ring; and The recess extends circumferentially around the inner ring; and the pressed portion of the narrow contact region is a cutting edge protruding in the recess toward the outer diameter direction of the inner ring, A container with a stopper cap according to embodiment 6. Aspect 8 A container with a stopper cap according to aspect 7, wherein a plurality of the blade portions are arranged in the recess with intervals in the height direction of the inner ring. Aspect 9 A container with a stopper cap according to any one of aspects 6 to 8, wherein the narrow contact region is disposed in an axially symmetrical position with respect to the wide contact region with respect to the inner ring. Aspect 10 A container with a stopper cap according to any one of aspects 6 to 9, wherein the circumferential length of the narrow contact region of the inner ring is 25% to 50% of the entire circumferential length of the inner ring. Aspect 11 Further comprising a display unit, and the display unit displays that the method of disassembling the container is to rotate the stopper cap relative to the opening in a circumferential direction of the opening. A container according to any one of aspects 1 to 10. Aspect 12 A container with a stopper cap as described in aspect 11, wherein the indicator indicates that peeling will occur between the inner bag and the outer shell by rotating the stopper cap in a circumferential direction of the mouth relative to the mouth. [Effects of the Invention]

[0011] According to the present disclosure, a container with a stopper cap can be provided that allows the outer shell and inner bag to be easily separated when discarded. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a side cross-sectional view of a container 1 with a stopper cap according to a first embodiment of the present disclosure. [Figure 2] FIG. 2 is a side cross-sectional view of the closure cap 20 and its surroundings of the closure capped container 1 according to the first embodiment of the present disclosure. [Figure 3] FIG. 3 is a schematic diagram showing the state in which the cap 20 of the capped container 1 in FIG. 2 is opened. [Figure 4] FIG. 4 is an enlarged view of the portion X in FIG. [Figure 5] FIG. 5 is a cross-sectional side view of a stopper capped container 1 according to a first embodiment of the present disclosure with the contents removed. [Figure 6] FIG. 6 is a schematic diagram illustrating a method for separating the outer shell 11 and the inner bag 12 in the capped container 1 according to the first embodiment of the present disclosure. [Figure 7] FIG. 7 is a schematic diagram illustrating a method for separating the outer shell 11 and the inner bag 12 in the capped container 1 according to the first embodiment of the present disclosure. [Figure 8] 10 is a side cross-sectional view of the closure cap 20 and its surroundings of a container with a closure cap according to a second embodiment of the present disclosure. FIG. [Figure 9] FIG. 9 is an enlarged view of the portion X in FIG. [Figure 10] FIG. 10 is an enlarged view of a portion Y in FIG. [Figure 11] FIG. 11 is an enlarged view of a portion similar to portion X in FIG. 2 of another container with a stopper cap according to the second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the present disclosure will be described in detail. Note that the present disclosure is not limited to the following embodiments, and various modifications can be made within the scope of the present disclosure.

[0014] First Embodiment A container with a stopper cap according to a first embodiment of the present disclosure has an outer shell, an inner bag laminated inside the outer shell and forming a space for accommodating contents, the inner bag being formed so that it peels off from the outer shell and shrinks as the contents decrease, a container body, and a stopper cap attached to the mouth of the container body, wherein the stopper cap has an inner ring that presses against the inner bag inside the mouth to secure the stopper cap to the container body, so that when the stopper cap is rotated circumferentially relative to the mouth, the frictional force between the inner bag and the inner ring at the mouth causes the inner bag to rotate along with the inner ring, resulting in peeling between the inner bag and the outer shell.

[0015] In the container with a stopper cap of the present invention, the inner ring of the stopper cap is fixed by pressure contact with the inner bag inside the mouth of the container body. If the contact pressure between the inner ring of the stopper cap and the inside of the mouth of the container body is of a predetermined magnitude, when the stopper cap is rotated in the circumferential direction of the mouth relative to the mouth, the frictional force between the inner bag and the inner ring at the mouth is sufficiently large, so that the inner bag rotates in the circumferential direction of the mouth following the stopper cap at the mouth and is separated from the outer shell.

[0016] As a result, in the container with a stopper cap of the present invention, the outer shell and inner bag can be easily separated when discarded by the simple operation of rotating the stopper cap in the circumferential direction of the mouth relative to the mouth.

[0017] The degree of contact pressure between the inner ring of the stopper cap and the inside of the mouth of the container body can be adjusted, for example, by the contact rate between the inner ring and the mouth, and / or the ratio between the outer diameter of the inner ring and the inner diameter of the mouth.

[0018] The contact rate between the inner ring and the mouth may be adjusted, for example, by the shape of the inner ring of the stopper cap and the mouth of the container body. More specifically, for example, the mouth of the container body may be configured to have a minimum inner diameter portion in the inner diameter direction, and the inner ring of the stopper cap may be configured to press against the inner bag at the minimum inner diameter portion inside the mouth, thereby fixing the stopper cap to the container body. Here, the minimum inner diameter portion refers to the portion of the mouth of the container body where the inner diameter is smallest. This allows the stopper cap to be fixed to the container body using only the minimum inner diameter portion and the inner ring, thereby ensuring a sufficient contact rate between the inner ring and the mouth while expanding the design flexibility of the container body. The minimum inner diameter portion may have a structure, for example, having a convex shape radially inward of the mouth, but is not limited to this.

[0019] Furthermore, when the mouth of the container body has a minimum inner diameter portion, the contact rate can be adjusted by adjusting the ratio of the height of the portion of the minimum inner diameter portion where the inner ring is pressed against the entire height of the minimum inner diameter portion. In particular, it is preferable that the ratio of the height of the portion of the minimum inner diameter portion where the inner ring is pressed against the entire height of the minimum inner diameter portion be greater than 50% and less than or equal to 100%. By setting this ratio to greater than 50%, a sufficient contact rate between the mouth of the container body and the inner ring of the stopper cap can be ensured.

[0020] The ratio of the height direction length of the portion of the minimum inner diameter portion where the inner ring is pressed against the height direction length of the entire minimum inner diameter portion may be more than 50%, 60% or more, 70% or more, 80% or more, or 90% or more, or may be 100% or less, 90% or less, 80% or less, or 70% or less.

[0021] Regarding the ratio between the outer diameter of the inner ring and the inner diameter of the mouth, it is preferable that the outer diameter of the inner ring be larger than the inner diameter of the mouth when the stopper cap is separated from the container body. If the outer diameter of the inner ring is larger than the inner diameter of the mouth, the contact pressure between the inner ring of the stopper cap and the inside of the mouth of the container body can be increased when the stopper cap is attached to the mouth of the container body. In addition, in a double-layered container consisting of an outer shell and an inner bag peelably laminated to the outer shell, the container body can be formed of a flexible material such as resin. Therefore, those skilled in the art will understand that even if the outer diameter of the inner ring is larger than the inner diameter of the mouth, the stopper cap can be attached to the mouth of the container body by expanding and contracting the inner diameter of the mouth and / or the outer diameter of the inner ring during attachment.

[0022] When the stoppering cap is separated from the container body, it is particularly preferable that the outer diameter of the inner ring is 2.5% to 3.5% larger than the inner diameter of the opening. In other words, it is particularly preferable that the outer diameter of the inner ring is 102.5% to 103.5% of the inner diameter of the opening.

[0023] When the outer diameter of the inner ring is 2.5% or more of the inner diameter of the mouth of the container body when the cap is separated from the container body, the contact pressure between the inner ring of the cap and the inside of the mouth of the container body can be particularly large when the cap is attached to the container body. On the other hand, when the outer diameter of the inner ring is 3.5% or less of the inner diameter of the mouth, the cap can be easily attached to the mouth of the container body.

[0024] The outer diameter of the inner ring may be 102.5% or more, 102.6% or more, 102.7% or more, 102.8% or more, or 102.9% or more of the inner diameter of the mouth portion, and may be 103.5% or less, 103.4% or less, 103.3% or less, 103.2% or less, or 103.1% or less.

[0025] The outer diameter of the inner ring may be 0.6 to 0.9 mm larger than the inner diameter of the mouth portion. The outer diameter of the inner ring may be 0.6 mm or more, 0.7 mm or more, or 0.8 mm or more larger than the inner diameter of the mouth portion, and may be 0.9 mm or less, 0.8 mm or less, or 0.7 mm or less.

[0026] The inner bag can be fastened to the outer shell at least in part of the container body. The method for fastening the inner bag to the outer shell is not particularly limited, but for example, the inner bag may be fitted into the outer shell to be fastened.

[0027] When the inner bag is engaged with the outer shell at least in part of the container body, when the stopper cap is rotated in the circumferential direction of the mouth portion relative to the mouth portion, the frictional force between the inner bag and the inner ring at the mouth portion causes the inner bag to rotate along with the inner ring, causing separation between the inner bag and the outer shell, and further releasing the engagement between the outer shell and the inner bag.

[0028] An example of a configuration in which the engagement between the outer shell and the inner bag is released when the stopper cap is rotated is a configuration in which the inner bag is engaged with the outer shell at a portion of the container body, such as the bottom of the container body. In such a configuration, when the inner bag rotates following the inner ring due to friction between the inner bag and the inner ring, the inner bag twists relative to the outer shell, and stress is applied to the portion at the bottom of the container body where the inner bag and outer shell are engaged, causing the inner bag to separate from the outer shell.

[0029] The stoppering cap has an inner ring that presses against the inner bag inside the mouth to fix the stoppering cap to the container body.

[0030] More specifically, the stoppering cap may have, for example, a cap body having a discharge hole for discharging the contents, a lid body connected to the cap body via a hinge, and a check valve disposed below the discharge hole of the cap body. The check valve may be fixed to the cap body from below the discharge hole of the cap body by a stopper ring.

[0031] The inner ring can be provided on the stopper ring.

[0032] The material of the inner ring is not particularly limited, but may be, for example, a resin, more specifically, a thermoplastic resin such as polypropylene or polyethylene terephthalate.

[0033] The container body has an outer shell and an inner bag that is laminated inside the outer shell and forms a space for storing the contents. The inner bag is formed so that it separates from the outer shell and shrinks as the contents decrease.

[0034] The shell can be composed of, for example, low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, and mixtures thereof.

[0035] The outer shell may be a single layer or multiple layers. In particular, if the outermost layer of the inner bag and the innermost layer of the outer shell are made of different resin types and are laminated without an adhesive layer, the peelability between the inner bag and the outer shell can be improved.

[0036] The inner bag may have a layer formed from an ethylene-vinyl alcohol copolymer resin (EVOH) from the viewpoint of maintaining barrier properties and further preventing oxidative deterioration of the contents packed in the inner bag. The inner layer may be a single layer or multiple layers.

[0037] The container body is equipped with a mechanism that causes the inner bag to separate from the outer shell and shrink as the contents decrease. An example of such a mechanism is an air inlet hole provided in the container body. The air inlet hole penetrates only the outer shell, not the inner bag. When a container with a stopper cap is used and the contents are discharged, the volume of the inner bag decreases, and air is introduced between the outer shell and the inner bag through the air inlet hole.

[0038] The mechanism by which the inner bag peels off from the outer shell and shrinks as the contents decrease is not limited to the above-mentioned outside air inlet hole, and any mechanism by which the inner bag peels off from the outer shell and shrinks as the contents decrease can be used.

[0039] FIG. 1 is a side cross-sectional view of a stopper-capped container 1 according to a first embodiment of the present disclosure.

[0040] As shown in FIG. 1, a container 1 with a stopper cap according to the first embodiment of the present disclosure has a container body 10 and a stopper cap 20 attached to the container body 10.

[0041] The container body 10 has an outer shell 11 and an inner bag 12 that is layered inside the outer shell 11 and forms a space for accommodating the contents. The inner bag 12 is formed so that it peels off from the outer shell 11 and shrinks as the contents decrease. The inner bag is engaged with the outer shell 11 at the bottom 13 of the container body 10.

[0042] The stoppering cap 20 is attached to the mouth portion 14 of the container body 10.

[0043] Fig. 2 is a side cross-sectional view of the vicinity of the stopper cap 20 of the capped container 1 according to the first embodiment of the present disclosure. As shown in Fig. 2, the stopper cap 20 has a cap body having a discharge hole 22 for discharging the contents, and a lid body 23 connected to the cap body via a hinge 24. When using the capped container 1, as shown in Fig. 3, the stopper cap 20 can be opened by lifting the lid body 23 of the stopper cap 20, and the contents can be discharged through the discharge hole 22. Although not shown for simplicity, the stopper cap 20 has a check valve located below the discharge hole 22 of the cap body.

[0044] As shown in Fig. 4, which is an enlarged view of the portion X in Fig. 2, the stopper cap 20 has an inner ring 21 that presses against the inner bag 12 inside the mouth portion 14 to fix the stopper cap 20 to the container body 10. Here, the mouth portion 14 has a minimum inner diameter portion 14a, and the inner ring 21 presses against the minimum inner diameter portion 14a.

[0045] With this configuration, the container 1 with a stopper cap according to the first embodiment of the present disclosure is configured so that when the stopper cap 20 is rotated circumferentially relative to the mouth portion 14, the frictional force between the inner bag 12 and the inner ring 21 at the mouth portion 14 causes the inner bag 12 to rotate along with the inner ring 21, resulting in separation between the inner bag 12 and the outer shell 11.

[0046] Fig. 5 is a side cross-sectional view of a container 1 with a stopper cap according to the first embodiment of the present disclosure, with the contents removed. From this state, as shown in Fig. 6, when the stopper cap 20 is rotated circumferentially relative to the opening 14, the frictional force between the inner bag 12 and the inner ring 21 causes the inner bag 12 to rotate along with the inner ring 21. The inner bag 12 then twists relative to the outer shell 11, applying stress to the portion of the bottom 13 of the container body 10 where the inner bag 12 and the outer shell 11 are engaged, causing the inner bag 12 to separate from the outer shell 11. Thereafter, the stopper cap 20 can be separated from the container body 10, and the inner bag 12 can be manually removed from the outer shell 11, for example, as shown in Fig. 7.

[0047] Second Embodiment A container with a stopper cap according to a second embodiment of the present disclosure is based on the first embodiment of the present disclosure, and further comprises an inner ring having a narrow contact region and a wide contact region in the circumferential direction, and the height length of the inner ring at the pressed portion of the narrow contact region is smaller than the height length of the inner ring at the pressed portion of the wide contact region.

[0048] When the inner ring has this configuration, the pressure applied to the portion of the narrow contact region that is in contact with the mouth can be greater than the pressure applied to the portion of the wide contact region that is in contact with the mouth. This causes the portion of the narrow contact region that is in contact with the mouth to bite into the inner bag. Therefore, when the stopper cap is separated from the container body, the inner bag gets caught on the portion of the narrow contact region that is in contact with the mouth, and is pulled outward from the container body along with the stopper cap, making it easy for the inner bag to lift up from the outer shell at the mouth. If the inner bag is lifted up from the outer shell at the mouth when the stopper cap is separated from the container body, this portion can serve as a trigger for the user to easily separate the inner bag from the outer shell by hand.

[0049] More specifically, the structure of the narrow contact area may be such that it has a recess in the outer diameter direction of the inner ring, the recess extends circumferentially around the inner ring, and the pressed portion of the narrow contact area is a blade portion that protrudes in the recess toward the outer diameter direction of the inner ring.

[0050] If the portion of the narrow contact region that is in contact with the inner ring is a blade that protrudes radially outward from the recess, the portion of the narrow contact region that is in contact with the opening of the narrow contact region is more likely to bite into the inner bag, which makes it even easier for the inner bag to lift up from the outer shell when the stoppering cap is separated from the container body.

[0051] The height of the cutting portion, i.e., the radial length of the inner ring of the cutting portion, may be 0.20 to 0.40 mm. The radial length of the inner ring of the cutting portion may be 0.20 mm or more, 0.25 mm or more, or 0.30 mm or more, and may be 0.40 mm or less, 0.35 mm or less, or 0.30 mm or less.

[0052] The width of the tip of the blade may be 0.15 to 0.50 mm. The width of the tip of the blade may be 0.15 mm or more, 0.20 mm or more, or 0.25 mm or more, and may be 0.50 mm or less, 0.45 mm or less, or 0.40 mm or less.

[0053] The width of the base of the blade may be 0.25 to 1.00 mm. The width of the base of the blade may be 0.25 or more, 0.35 or more, or 0.45 or more, and may be 1.00 m or less, 0.90 m or less, or 0.80 m or less.

[0054] The width of the base of the blade is preferably greater than the width of the tip, i.e., the blade is preferably trapezoidal when viewed in a radial cross section of the in-ring.

[0055] The inclination angle of the blade portion, i.e., the inclination angle of the side surface of the blade portion relative to the height direction of the inner ring, may be 30 to 90°. The inclination angle of the blade portion may be 30° or more, 45° or more, or 60° or more, and may be 90° or less, 75° or less, or 60° or less.

[0056] To facilitate lifting of the inner bag, it is preferable to provide a plurality of blades. Specifically, it is preferable to provide a plurality of blades at intervals in the height direction of the inner ring (the same as the height direction of the container body) in the recess of the narrow contact region.

[0057] In order to increase the pressure applied to the portion of the narrow contact region that is in pressure contact with the opening of the narrow contact region, it is preferable that the wide contact region be disposed at a position symmetrical to the axis of the inner ring relative to the narrow contact region. In other words, it is preferable that the narrow contact region be disposed at a position symmetrical to the axis of the wide contact region relative to the inner ring.

[0058] In order to position the narrow contact region axially symmetrically to the wide contact region with respect to the inner ring, the circumferential length of the narrow contact region is preferably 50% or less of the entire circumferential length. Furthermore, from the viewpoint of hooking the inner bag on the part of the narrow contact region that is pressed against the opening of the container when the stoppering cap is separated from the container body, the circumferential length of the narrow contact region is preferably 25% or more of the entire circumferential length.

[0059] The circumferential length of the narrow contact region may be 25% or more, 30% or more, 35% or more, or 40% or more of the total circumferential length, and may be 50% or less, 45% or less, 40% or less, or 35% or less.

[0060] Fig. 8 is a side cross-sectional view of the vicinity of the stopper cap 20 of a container with a stopper cap according to a second embodiment of the present disclosure, and Figs. 9 and 10 are enlarged views of portions X and Y in Fig. 8, respectively.

[0061] As shown in FIGS. 8 to 10, in a capped container according to the second embodiment of the present disclosure, the inner ring 21 has a narrow contact region and a wide contact region along the circumferential direction.

[0062] Here, the narrow contact region has a recess 21a in the outer diameter direction of the inner ring 21, so that the length of the pressed portion of the narrow contact region in the height direction of the inner ring 21 is smaller than the length of the pressed portion of the wide contact region in the height direction of the inner ring 21. In addition, the pressed portion of the narrow contact region has a structure in which a cutting edge 21b protrudes in the recess 21a toward the outer diameter direction of the inner ring 21.

[0063] The wide contact area is arranged axially symmetrically with the narrow contact area with respect to the inner ring 21. The wide contact area does not have a recess 21a, and the length of the portion of the narrow contact area that is in pressure contact with the inner ring 21 in the height direction is greater than the length of the inner ring 21.

[0064] In the container with a stopper cap according to the second embodiment of the present disclosure, due to this configuration, the pressure applied to the portion of the narrow contact region that is in contact with the mouth 14 is greater than the pressure applied to the portion of the wide contact region that is in contact with the mouth 14. As a result, the portion of the narrow contact region that is in contact with the mouth 14 bites into the inner bag. Therefore, when the stopper cap 20 is separated from the container body 10, the inner bag 12 gets caught on the portion of the narrow contact region that is in contact with the mouth 14, and is pulled outward from the container body 10 following the stopper cap 20, making it easy for the inner bag 12 to lift up from the outer shell 11 at the mouth 14.

[0065] Figure 11 is an enlarged view of a portion of another capped container according to the second embodiment of the present disclosure, similar to portion X in Figure 2. In this capped container according to the second embodiment of the present disclosure, two cutting edges 21b are arranged at an interval in the height direction of the inner ring 21.

[0066] Third Embodiment A container with a stopper cap according to the third embodiment of the present invention is based on the container with a stopper cap according to the first and second embodiments of the present invention and further includes a display portion.

[0067] Here, the display indicates that the method of disassembling the container is to rotate the stoppering cap in the circumferential direction of the mouth relative to the mouth.

[0068] The indicator preferably indicates that separation will occur between the inner bag and the outer shell by rotating the stoppering cap relative to the opening in the circumferential direction of the opening.

[0069] The display unit may be a written explanation and / or an explanatory diagram. The display unit may be disposed at any position on the container with a stopper cap where the user can recognize the display unit when looking at the container with a stopper cap. It is particularly preferable that the display unit be disposed on the side of the container body from the viewpoint of ensuring good visibility and readability.

[0070] If the display is an explanatory diagram, it may be, for example, as shown in FIGS. [Example]

[0071] Examples 1-1 to 1-3 and Comparative Examples 1-1 to 1-4 <Production of a container with a stoppered cap> A container body was prepared, consisting of an outer shell made of a polypropylene sheet, a recycled polypropylene sheet, and a polypropylene sheet, and an inner bag made of an ethylene-vinyl alcohol copolymer sheet, an adhesive layer, and a polyethylene sheet, in that order from the outside of the container body. The container body had the shape shown in Figure 1. The inner bag and outer shell were engaged at the bottom of the container body by fitting the inner bag into the outer shell. The inner bag and outer shell were not bonded to the side of the container body. The mouth of the container body had a minimum inner diameter part that was 1 mm long in the height direction of the container body. The minimum inner diameter part was located at the tip of the mouth. The inner diameter of the mouth at the minimum inner diameter part was 23.27 mm.

[0072] The stopper caps were formed using a 3D printer (DWS; 028j-PLUS). The size of the outer diameter of the inner ring of the stopper cap relative to the inner diameter of the smallest inner diameter part in each example is shown in Table 1.

[0073] The contents (soy sauce) were filled into each container of each example, and a stopper cap was attached by a stopper to obtain a container with a stopper cap (containing the contents) of each example.

[0074] <Isolation Test> The contents were all removed from the container with the stopper cap of each example. That is, the inner bag was left in a deflated state. Next, the stopper cap was gripped by hand and rotated counterclockwise as viewed from above the container, and it was observed whether the inner bag rotated along with the cap.

[0075] <result> The preparation conditions and test results are shown in Table 1.

[0076] In Table 1, the pressure contact width is the height-wise length of the container with the stopper cap at the point where the smallest inner diameter part of the mouth of the container body contacts the inner long of the stopper cap, and is expressed as a ratio to the height-wise length of the container with the stopper cap at the smallest inner diameter part of the mouth of the container body.

[0077] In each example, if the stopper cap could be attached to the container body, it was rated as "OK," and if it could not be attached, it was rated as "NO." Similarly, if the inner bag rotated following the cap in the separation test, it was rated as "OK," and if only the cap rotated without following, it was rated as "NO."

[0078] [Table 1]

[0079] As shown in Examples 1 to 3, when the outer diameter of the inner ring of the stopper cap was made 2.5% to 3.5% larger than the inner diameter of the smallest inner diameter part of the mouth of the container body and the pressure contact width was made larger than 50%, the stopper cap could be attached to the container body and the inner bag rotated accordingly.

[0080] Examples 2-1 to 2-3, Comparative Example 2-1, and Reference Example 2-1 <Production of a container with a stoppered cap> A container body was produced in the same manner as in Example 1-1. The stoppering cap was formed using a 3D printer (028j-PLUS, manufactured by DWS).

[0081] The contents (soy sauce) were filled into each container of each example, and a stopper cap was attached by a stopper to obtain a container with a stopper cap (containing the contents) of each example.

[0082] The configuration of the stopper cap in each example is shown in Table 1.

[0083] <Isolation Test> The contents were all removed from each container with a cap. In other words, the inner bag was left in a deflated state. Next, the cap was held in the hand and rotated counterclockwise as viewed from above, and it was observed whether the inner bag rotated along with the cap. In addition, when the cap was separated from the container body, it was observed whether the inner bag floated from the outer shell, i.e., whether the mouth floated.

[0084] <result> The manufacturing conditions and test results are shown in Table 2. The "height" of the horizontal blade in Table 2 refers to the radial length of the horizontal blade relative to the inner ring. The "inclination" refers to the inclination angle of the side of the horizontal blade relative to the height direction of the inner ring. The "circumferential length" refers to the ratio of the length of the horizontal blade to the total circumferential length of the inner ring. In the circumferential direction of the inner ring, the area where the horizontal blade is formed corresponds to the narrow contact area, and the area where the horizontal blade is not formed corresponds to the wide contact area. The "number of stages" refers to the number of horizontal blades when viewed from the height direction of the inner ring (the same as the height direction of the container body).

[0085] [Table 2]

[0086] As shown in Table 1, in the containers with stopper caps of Examples 2-1 and 2-2 having a horizontal blade and the container with stopper cap of Reference Example 2-1 not having a horizontal blade, the inner bag rotated along with the cap in the separation test. However, while mouth floating was observed in the containers with stopper caps of Examples 2-1 and 2-2, mouth floating was not observed in the container with stopper cap of Reference Example 2-1.

[0087] In addition, in the container with the stoppered cap of Comparative Example 2-1, the inner bag did not rotate along with the cap during the separation test. This is thought to be because the horizontal blade was provided around the entire circumference of the inner ring, which prevented sufficient friction between the inner ring and the inner bag of the container body. [Explanation of symbols]

[0088] 1. Container with stopper cap 10 Container body 11 Outer shell 12 Inner bag 13 Bottom 14 Mouth 14a Smallest inner diameter 20 Stopper Cap 21 Inner Ring 21a Recess 21b Blade part 22 Discharge hole 23 Lid 24 hinge

Claims

1. a container body having an outer shell and an inner bag laminated inside the outer shell and forming a space for accommodating contents, the inner bag being formed so that the inner bag separates from the outer shell and shrinks as the contents decrease; a stopper cap attached to the mouth of the container body; A container with a stopper cap, comprising: The stopper cap has an inner ring that is pressed against the inner bag inside the mouth to fix the stopper cap to the container body, so that when the stopper cap is rotated in the circumferential direction of the mouth relative to the mouth, the inner bag rotates following the inner ring at the mouth due to the frictional force between the inner bag and the inner ring, causing separation between the inner bag and the outer shell; and the inner ring has a narrow contact region and a wide contact region around its circumference; a length of a portion of the narrow contact region in a height direction of the inner ring that is in pressure contact with the narrow contact region is smaller than a length of a portion of the wide contact region in a height direction of the inner ring; Container with stopper cap.

2. the inner bag is secured to the outer shell at at least a portion of the container body; and When the stoppering cap is rotated in the circumferential direction of the mouth portion relative to the mouth portion, the frictional force between the inner bag and the inner ring causes the inner bag to rotate following the inner ring at the mouth portion, causing separation between the inner bag and the outer shell, and further releasing the engagement between the outer shell and the inner bag. The container with a stopper cap according to claim 1.

3. the mouth portion has a minimum inner diameter portion; and The stopper cap has an inner ring inside the mouth portion at the smallest inner diameter portion, which is in pressure contact with the inner bag to fix the stopper cap to the container body. The container with a stopper cap according to claim 1 or 2.

4. 4. A container with a stopper cap as described in claim 3, wherein the ratio of the height of the portion of the minimum inner diameter portion where the inner ring is pressed against the height of the entire minimum inner diameter portion is more than 50% and not more than 100%.

5. When the stopper cap is separated from the container body, the outer diameter of the inner ring is 2.5% to 3.5% larger than the inner diameter of the opening. The container with a stopper cap according to claim 1 or 2.

6. the narrow contact area has a recess in the outer radial direction of the inner ring; and The recess extends circumferentially around the inner ring; and the pressed portion of the narrow contact region is a cutting edge protruding in the recess toward the outer diameter direction of the inner ring, The container with a stopper cap according to claim 1 or 2.

7. 7. The container with a stopper cap according to claim 6, wherein a plurality of the blade portions are arranged in the recess at intervals in the height direction of the inner ring.

8. 3. The container with a stopper cap according to claim 1, wherein the narrow contact area is disposed at a position axially symmetrical to the wide contact area with respect to the inner ring.

9. 3. The container with a stopper cap according to claim 1, wherein the circumferential length of the narrow contact region of the inner ring is 25% to 50% of the entire circumferential length of the inner ring.

10. Further comprising a display unit, and the display unit displays that the method of disassembling the container is to rotate the stopper cap relative to the opening in a circumferential direction of the opening. The container with a stopper cap according to claim 1 or 2.

11. 11. A container with a stopper cap as described in claim 10, wherein the indicator indicates that separation will occur between the inner bag and the outer shell by rotating the stopper cap in a circumferential direction of the mouth portion relative to the mouth portion.

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