JP6398150B2 - Packaging containers and lids - Google Patents

Description

  The present invention relates to a packaging container having functions such as drying, absorption of gas such as oxygen, and provision of volatile substances.

  A test piece (detection sensor chip) used for blood or urine analysis is easily deteriorated by moisture (water), and the detection ability is lowered. Therefore, a container having a desiccant inside is used for storing such a test piece. For example, a packaging container that houses a desiccant in a lid has been proposed. As shown in FIG. 21, the lid body that can accommodate the desiccant includes a lid body 102 provided with an accommodating portion 105 that accommodates a desiccant 104 surrounded by a plastic 103 having a hole on the inside. As shown in the figure, an accommodating portion 205 for accommodating a desiccant 104 having an opening on the inside is provided, and a lid 202 that seals the opening with a breathable film 203 has been proposed.

  In the packaging container using the lid described above, the moisture (water) or air permeation amount that moves between the packaging container and the storage unit 105 or 205 cannot be adjusted. There was a problem that it was difficult to adjust the ability. In addition, in order to increase the storage stability of the test piece, when a gas absorbent such as an oxygen absorbent or a volatile substance is accommodated in addition to the desiccant in the accommodating part, for the same reason, the ability of gas absorption or substance volatilization, etc. It was difficult to prepare.

  Therefore, the problem of the present invention is that the lid can contain a desiccant, an oxygen absorbent, a gas absorbent and a volatile substance, and the desiccant, oxygen absorbent, gas absorbent and By providing a packaging container that can adjust the permeation of moisture (water) and air that moves between volatilizing substances and the ability to dry, absorb gas such as oxygen, or volatilize substances is there.

One aspect of the present invention is a packaging container comprising: a cylindrical container body; a container body that is separate from the container body so that the container body can be opened and closed; and a functional body containing a functional substance container is fitted. The lid includes an inner ring into which the functional substance agent container is fitted, and the inner ring protrudes inward from the tip portion, and has a protrusion that prevents the functional substance agent container from coming out of the lid body. The functional substance agent container includes an inner container having an opening at one end, a functional substance agent accommodated in the inner container, and a breathable sheet for sealing the opening of the inner container. vessel has a protrusion which is partitioned by a plurality of grooves and a plurality of grooves on its outer wall, the outer peripheral wall of the opening portion side of the protrusion of the inner container is a curved surface which is chamfered, the collision condition of the inner container the outer peripheral wall of the cross-section shape, provided on the opening side of the inner container, from the opening side, the opening Toward the bottom side is a side opposite to the side, inclined so as to spread the outer diameter of the outer peripheral wall, a first portion having a first inclination with respect to the center axis of the inner container, on the bottom side of the first portion A second portion having a second inclination greater than the first inclination with respect to the central axis of the inner container, wherein the second portion is inclined so that the outer diameter of the outer peripheral wall increases from the opening side toward the bottom side ; , that having a connecting portion that connects the first and second parts.

Another aspect of the present invention is a lid for a packaging container, comprising an inner ring and a functional substance agent container fitted inside the inner ring , the inner ring protruding inward from the tip portion. The functional substance agent container has a protrusion that prevents the functional substance agent container from coming out of the lid, and the functional substance agent container includes an inner container having an opening at one end, and a functional substance agent accommodated in the inner container. The inner container has a breathable sheet for sealing the opening of the inner container, and the inner container has a plurality of grooves and protrusions defined by the plurality of grooves on the outer peripheral wall thereof, and the protrusion on the opening side of the inner container. the outer peripheral wall of the strip is curved are chamfered, the inner vessel collision Article peripheral wall of the cross-section shape of the is provided on the opening side of the inner container, from the opening side is the opposite side of the opening side toward the bottom side, inclined to expand the outer diameter of the outer peripheral wall, against the central axis of the inner container A first portion having a first inclination Te, provided at the bottom side of the first part, from the opening side toward the bottom side, inclined to expand the outer diameter of the outer peripheral wall, the center axis of the inner container a second portion having a first inclination is greater than the second inclination with respect to, that having a connecting portion that connects the first and second parts.

  According to the present invention, the lid can contain a desiccant, an oxygen absorbent, a gas absorbent, and a volatile substance, and contains a desiccant, an oxygen absorbent, a gas absorbent, and a volatile substance in the packaging container. Provided is a packaging container capable of adjusting the permeation amount of moisture (water) and air moving between the inside and the inside of the container, and adjusting the capability of functions such as drying, gas absorption such as oxygen, or material volatilization be able to.

The perspective view of the packaging container which concerns on this invention Sectional drawing which follows the A-A 'line shown in FIG. Sectional drawing which shows the closure state of the other example of the packaging container which concerns on this invention Sectional drawing which shows another example of the cover body which concerns on this invention Front view of inner container according to the present invention Top view of the inner container according to the present invention Sectional drawing which follows the B-B 'line shown in FIG. Sectional drawing which shows another example of the inner container which concerns on this invention Diagram showing how to fill functional substances The figure which shows the state which the air permeable film protruded from the opening part of the inner container The figure which shows the state which the air permeable film protruded from the opening part of the inner container The figure which shows the manufacturing method of the packaging container The figure which shows the manufacturing method of the packaging container Sectional drawing which shows the closure state of the other example of the packaging container which concerns on this invention Sectional drawing of the cover which concerns on this invention The figure which shows another example of the outer wall shape of the protrusion of an inner container The figure which shows another example of the outer wall shape of the protrusion of an inner container The figure which shows another example of the outer wall shape of the protrusion of an inner container The figure which shows another example of the outer wall shape of the protrusion of an inner container The figure which shows another example of the outer wall shape of the protrusion of an inner container Sectional view showing a conventional lid Sectional drawing which shows the cover body of another example of the past

  FIG. 1 is a perspective view showing an example of a packaging container according to the present invention. FIG. 2 is a cross-sectional view taken along line A-A ′ shown in FIG. 1. The packaging container according to the present invention is made of a moisture-proof resin (for example, polypropylene).

[Container body]
The container body 1 has a cylindrical shape, one end is sealed by a bottom plate 11, and the other end is open. Examples of the cylindrical shape include a cylinder and a rectangular tube (a quadrangular column, a hexagonal column, etc.). The container body 1 is not particularly limited as long as the opening can be opened and closed with a lid 2 described later. In this embodiment, an external screw is formed in the vicinity of the opening of the container body 1.

[Lid]
The lid body 2 has an inner ring 21 provided with a protrusion (undercut) 20 that protrudes inward from the tip portion. In the present embodiment, the lid body 2 has a side surface portion on which an internal screw is formed, and the container body 1 is sealed when the lid body 2 is screwed with the container body 1. The inner ring 21 plays a role of supporting the functional substance agent containing body 3, which will be described later, by the protrusions 20 so as not to come out of the lid body 2. The protrusion 20 may be provided on the entire circumference of the inner ring 21 or may be provided partially, as long as the functional substance agent container 3 can be supported so as not to come out of the lid 2. Providing the protrusions 20 on the entire circumference of the inner ring 21 is preferable because the functional substance agent containing body 3 can be more reliably prevented from dropping from the lid body 2. Further, as shown in FIG. 3, by providing the outer peripheral wall of the inner ring 21 at a position in contact with the inner wall of the container body 1, the sealing performance of the container body 1 can be further improved.

  Further, as shown in FIG. 2, a packing 6 is provided outside the inner ring 21 on the top surface inside the lid 2. By providing the packing 6, when the lid 2 is screwed into the opening of the container body 1, the upper surface of the opening of the container body 1 and the inner surface of the lid 2 can be brought into close contact with each other, and the packaging container is sealed can do. Instead of providing the packing 6, the contact ring 7 may be provided as shown in FIG. 3. Even when the contact ring 7 is provided, the same effect as that obtained when the packing 6 is provided can be obtained.

  In the above description, an example of screwing into the opening of the container body 1 is shown. However, as shown in FIG. 4, the top surface is connected via a ring and a hinge 23 that fits into the opening of the container body 1. The lid 42 may be used.

[Functional substance container]
The packaging container according to the present invention has a functional substance agent container 3 inserted inside the lid 2.

  The functional substance agent container 3 includes an inner container 30, a functional substance agent 5 accommodated in the inner container 30, and a breathable film 4 that seals the opening of the inner container 30.

  FIG. 5 is a front view of the inner container 30. FIG. 6 is a top view of the inner container 30. FIG. 7 is a cross-sectional view taken along the line B-B ′ shown in FIG. 6.

  An example of the shape and size of the inner container 30 will be described below. The inner container 30 has a cylindrical shape, one end of which is sealed by a bottom plate, and the other end is opened. The outer peripheral shape and size of the inner container 30 can be inserted into the inner ring 21 of the lid 2, and the closing part dimension b of the inner container 30 is larger than the opening part dimension a of the inner ring 21 shown in FIG. 2. Is set as follows. As a result, the functional substance agent container 3 inserted into the inner ring 21 can be made difficult to come out of the lid body 2 due to vibration or dropping of the packaging container. Moreover, it is preferable that the opening dimension c of the inner container 30 is set to be smaller than the opening dimension a of the inner ring 21 by 0.05 mm or more. On the outer peripheral wall of the inner container 30, a groove 31 that connects the open end and the bottom is formed, and the corner of the upper end of the bottom that forms the groove 31 is chamfered. Further, the outer peripheral wall of the inner container 30 includes a plurality of protrusions 32 that are top portions defined by the grooves 31. Further, the outer peripheral wall on the opening end side of the ridge 32 is rounded with a curved surface with a curvature radius of 1 mm. In FIG. 6, 15 ridges 32 are provided, but the number of the ridges 32 is not limited as long as the functional substance agent containing body 3 can be prevented from coming out of the inner ring 21, and the ridges 32 are not limited. 32 may not be provided on the entire outer periphery of the outer wall. However, the number of the protrusions 32 is preferably 2 to 30 for the purpose of preventing the functional substance agent container 3 from coming out of the inner ring 21 and the design conditions of the mold design. Moreover, although the bottom part of the groove | channel 31 is formed in the plane, you may form in the curved surface.

  The height d and width w of the protrusion 32 and the depth e and width f of the groove 31 are appropriately determined in consideration of the adjustment of the function capability of the packaging container and the size of the object to be described later. The number of the grooves 31 and the protrusions 32 is also appropriately determined in consideration of the adjustment of the function capability of the packaging container.

  The bottom plate of the inner container 30 may be planar as shown in FIG. Further, the bottom plate of the inner container 30 may have a concave shape with the central portion indented inward as shown in FIG. The effect of using the bottom plate shown in FIG. 8 will be described later.

  Moreover, as a material of the inner container 30, the material which can seal the air permeable film 4 mentioned later for details is used.

  Examples of the functional substance agent 5 include a desiccant, an oxygen absorbent, a gas absorbent, a volatile substance, and the like, and one or a combination of two or more of these can be used. Moreover, the functional material agent 5 can use a powder, a granule, and a lump-like substance, and it accommodates only the required quantity in the inner container 30. FIG.

  As the desiccant used as the functional substance agent 5, any known or commonly used desiccant can be used as long as the object to be contained is not contaminated and eroded, and is not particularly limited. Specific examples include chemical desiccants such as calcium oxide, calcium chloride, calcined alum and iron powder, and physical desiccants such as aluminum oxide, zeolite, molecular sieve and silica gel.

  Moreover, the humidity in a packaging container can be adjusted by selecting the kind of desiccant. When zeolite and / or molecular sieve is used, the humidity in the packaging container can be 5% or less. When calcium oxide, calcium chloride or the like is used, the humidity in the packaging container can be about 5 to 10%. When silica gel or aluminum oxide is used, the humidity in the packaging container can be approximately 10%.

  Further, when it is desired to avoid aggregation of the desiccant due to moisture absorption or generation of dust due to friction or the like, it is preferable to use a physical desiccant. Among these, the molecular sieve can be used particularly suitably because the humidity in the packaging container can be kept low, the drying efficiency is changed due to the temperature change, and it is difficult to re-release water.

  Examples of the oxygen absorbent used as the functional material agent 5 include iron-based powders and metal powders.

  Examples of the gas absorbent used as the functional substance agent 5 include a molecular sieve having a pore diameter of 3 to 12 mm (0.3 nm to 1.2 nm).

  Examples of the volatilizing substance used as the functional substance agent 5 include substances that emit a substance that enhances the storage stability of the object to be contained, such as fungicides and fungicides.

  As the air permeable film 4, any film having air permeability, moisture permeability and dust resistance and having a certain strength can be used. Specifically, a nonwoven fabric made of a resin such as polyethylene and polypropylene, a microporous film, and a microporous polyethylene or polypropylene film can be exemplified. Commercially available examples of such films include: DuPont, USA; “Tyvek (registered trademark)”, Sekisui Plastics Co., Ltd .; “Serpore”, Tokuyama Soda Co., Ltd .; “NF Sheet”, Nitto Denko Corporation The company “Nitoflon (registered trademark)” can be mentioned.

  The functional substance agent container 3 can be manufactured by accommodating the functional substance agent 5 in the inner container 30 and sealing the opening of the inner container 30 with the breathable film 4.

  When the functional substance 5 is accommodated in the inner container 30, for example, when a filling nozzle is used as shown in FIG. 9, the accommodating operation can be performed efficiently.

  After accommodating the functional substance agent 5, the opening of the inner container 30 is sealed with the breathable film 4. The breathable film 4 is cut in advance according to the shape and size of the opening of the inner container 30. At this time, as shown in FIGS. 10 and 11, the breathable film 4 protrudes from the opening of the inner container 30 and is cut. Here, the outer peripheral wall near the opening end of the protrusion 32 of the inner container 30 is rounded, and the opening dimension c of the inner container 30 is 0.05 mm or more smaller than the opening dimension a of the inner ring 21. With this setting, the air permeable film 4 protruding from the opening of the inner container 30 rubs against the protrusion 20 and the inner container 30 when the functional substance agent container 3 is inserted into the inner ring 21. It is possible to reduce tearing and scraping. Moreover, the inner container 30 can be inserted into the inner ring 21 without difficulty. The cut air-permeable film 4 can be aligned with the opening of the inner container 30 using a suction arm using air suction.

  Although the method in particular of sealing the opening part of the inner container 30 with the air permeable film 4 is not restrict | limited, Ultrasonic welding, heat welding, a high frequency seal, etc. can be illustrated. As shown in FIG. 12, it can heat-weld using an ultrasonic horn, hold | maintaining the air permeable film 4 using an adsorption | suction arm. It is preferable that the welded area between the opening of the inner container 30 and the breathable film 4 is small as long as the adhesion between the two is not impaired. A large welding area is not preferable because it causes wrinkles and kinks in the breathable film 4 when the inner container 30 is inserted into the container body 1. Moreover, when the porous film of an aluminum structure is used as the air permeable film 4, a high frequency seal can be employed.

  The functional substance agent container 3 obtained as described above is inserted into the inner ring 21 of the lid 2. As shown in FIG. 13, the functional substance agent container 3 is inserted with the breathable film 4 facing the base side of the inner ring 21. In other words, the opening of the inner container 30 is directed to the base side of the inner ring 21, and the bottom of the inner container 30 is directed to the protrusion 20 side of the inner ring 21. The functional substance agent container 3 is inserted so that the bottom plate is supported by the protrusions 20 of the inner ring 21.

  After the functional substance agent accommodating body 3 is accommodated in the lid body 2, the function based on the functional substance agent 5 is provided in the container main body 1 by sealing the opening of the container main body 1 with the lid body 2. The packaging container of the present invention is completed.

  In the packaging container according to the present invention, when a drying agent, an oxygen absorbent, and a gas absorbent are accommodated as the functional substance agent 5 in the inner container 30, a groove 31 is provided on the outer peripheral wall of the inner container 30. Thus, moisture (water) or air in the packaging container passes through the space between the groove 31 and the inner peripheral wall of the inner ring 21, passes through the air permeable film 4, and is adsorbed by the functional material agent 5. Further, when a volatile substance is accommodated as the functional substance agent 5 in the inner container 30, the gas emitted by the volatile substance permeates through the air permeable film 4 and the inside of the groove 31 and the inner ring 21. It passes through the space between the peripheral walls and can be filled into the packaging container.

  The capacity of the packaging container such as drying can be adjusted by selecting the type of functional substance 5 and the amount to be accommodated as described above, but the depth e and width f of the groove 31 and the protrusion 32 Can be adjusted by selecting the height d and width w and the number thereof. If the height d and width w of the ridge 32 are reduced, the depth e and width f of the groove 31 are increased, and the number of the grooves 31 and ridges 32 is increased, a large amount of moisture (water) or air can be quickly obtained. Since it can be permeated, it becomes a packaging container excellent in instantaneous power, but since the function of the functional substance 5 is consumed in a short time, the life of the function of the packaging container is shortened. It is more preferable to set according to the capability of a desired function.

  In addition, the corner of the upper end portion of the bottom portion that forms the groove 31 of the inner container 30 is chamfered with a plane cut obliquely. By performing C chamfering, the gap between the protrusion 20 and the inner container 30 can be formed large. Therefore, even when the protrusions 20 are provided on the entire circumference of the inner ring 21, it is possible to prevent moisture (water) or air inside the container body 1 from being easily transmitted to the functional substance agent container 3 through the grooves 31. Yes. In addition, the upper end portion of the bottom portion of the groove 31 is obliquely cut into a plane and chamfered, but may be rounded with a curved surface.

  FIG. 14 shows an example in which the inner container 30 shown in FIG. 8 is adopted in the packaging container according to the present invention. When it is desired to increase the amount of the desiccant, the volume of the functional substance agent container 3 may be increased. However, there is a problem that if the height of the container body 1 is not sufficient, it is not possible to secure a storage space for an object to be stored (such as a test piece) simply by increasing the height of the functional substance container 3. is there. Therefore, if the packaging container is configured as shown in FIG. 14, the volume of the functional substance agent container 3 can be increased without changing the height of the container body 1, and more functional substance agents 5 can be accommodated. And the to-be-contained object (test piece etc.) of the same length can be accommodated. Further, since the bottom plate of the inner container 30 in FIG. 11 has a tapered shape in which the inner diameter gradually narrows from the outer peripheral portion, even when the object is in contact with the peripheral portion of the bottom plate, the bottom plate is guided to the central recess and the lid is closed. It will not hinder. Therefore, the tapered shape makes it possible to stably store the object. However, when it is not necessary to consider the stable accommodation state of the object to be accommodated, the volume of the functional substance agent container 3 can be adjusted by providing a step in at least a part of the bottom plate.

  Further, the height H 1 from the bottom of the inner ring 21 of the lid body 2 that seals the opening of the container body 1 shown in FIG. 2 to the bottom plate 11 of the container body 1 seals the opening of the container body 1 with the lid body 2. When stopping, in order to prevent the contained object from being sandwiched between the tip of the inner ring 21 of the lid 2 and the bottom plate of the container main body 1 and deformed, the dimension is set to a height h or more of the contained object. It is preferable. For example, the dimension of the height H1 from the bottom of the inner ring 21 of the lid 2 that seals the opening of the container body 1 shown in FIG. 2 to the bottom plate 11 of the container body 1 is 28.3 mm as an example. In this case, it is preferable to accommodate an object whose height h is lower than 28.3 mm.

  FIG. 15 shows a cross-sectional view of the lid body 2. The dimensions of the space into which the functional substance container 3 shown in FIG. 13 is inserted are, for example, a height H2 of 14.6 mm and an inner diameter r of 22.33 mm.

  The outer wall near the opening of the ridge 32 of the inner container 30 may have a chamfered shape combining a curved surface and a flat surface. For example, as shown in the enlarged cross-sectional views shown in FIGS. 16 to 19, a cross-sectional shape in which a curved portion and a straight portion are connected may be used, and the outer diameter may gradually increase from the opening side toward the bottom. With this shape, when the functional substance agent container 3 is inserted into the inner ring 21, the air permeable film 4 protruding from the opening of the inner container 30 is rubbed by the protrusion 20 and the inner container 30. This can be reduced. Further, the inner container 30 can be inserted into the container body 1 without difficulty.

  Further, as shown in FIG. 20, the outer wall shape on the opening side of the ridge 32 of the inner container 30 is such that the thickness of the ridge 32 is more uniform than the other parts from the opening end of the inner container 30 to the height D2. It is good also as a shape which makes it thin and has an outer diameter smaller than another part. The height D2 is preferably larger than the protruding dimension D1 of the air permeable film 4 from the opening of the inner container 30 shown in FIGS. By making the height D2 larger than the protruding dimension D1 of the breathable film 4 and making the thickness of the protrusion 32 thinner than the opening dimension a of the inner ring 21 by 0.05 mm or more, the breathable film is opened from the opening of the inner container 30. 4 can be accommodated between the inner container 30 and the inner ring 21. Therefore, when the functional substance agent container 3 is inserted into the inner ring 21, it is possible to further reduce that the breathable film 4 protruding from the opening of the inner container 30 is rubbed by the protrusion 20 and the inner container 30. it can.

  In the above embodiment, the inner container 30 is provided with the grooves 31 and the protrusions 32, and the height d and width w of the protrusions 32 and the depth e and width f of the grooves 31 are moisture (water). And the amount of air permeation is adjusted. However, the permeation amount of moisture (water) or air may be adjusted by providing grooves in the inner ring 21 instead of providing the grooves 31 and the protrusions 32 in the inner container 30. Further, when the inner ring 21 is provided with a groove, the protrusion 20 does not have to be provided on the entire inner ring 21.

  Since the packaging container according to the present invention can contain various functional substance agents as well as simple substances, it can have a composite function. In addition, by adjusting the depth and width of the groove provided in the inner container, it is possible to adjust the amount of moisture (water) or air that moves between the inside of the packaging container and the functional substance agent container. It is possible to freely adjust the action period of the function.

  In addition, since the packaging container according to the present invention inserts the functional substance agent container into the lid, the insertion work becomes easier as compared with the case where the functional substance agent container is inserted into the bottom of the container body. Furthermore, since the function of a packaging container can be protected by carrying out hermetic packaging of only a cover body, transportation cost can be held down. Further, the present invention is directed not only to a packaging container but also to a lid body alone.

  The packaging container according to the present invention can be widely used as a container that requires functions such as drying, oxygen absorption, and provision of volatile substances. For example, it can be suitably used as a test piece for use in a blood glucose level test or a urine test or a container for storing a medicine (tablet or the like).

DESCRIPTION OF SYMBOLS 1 Container main body 2, 42 Cover body 3 Functional substance agent container 4 Breathable film 5 Functional substance agent 6 Packing 7 Contact ring 11 Bottom plate 20 Protrusion 21 Inner ring 23 Hinge 30 Inner container 31 Groove 32 Projection

Claims (4)

A packaging container comprising: a cylindrical container body; and a container body that is separate from the container body so that the container body can be opened and closed, and a functional substance agent container is fitted therein.
The lid includes an inner ring into which the functional substance agent container is fitted,
The inner ring protrudes inward from the tip portion, and has a protrusion that prevents the functional substance agent container from coming out of the lid,
The functional substance agent container includes an inner container having an opening at one end, a functional substance agent accommodated in the inner container, and a breathable sheet that seals the opening of the inner container,
The inner container has a plurality of grooves and ridges defined by the plurality of grooves on an outer peripheral wall thereof,
The outer peripheral wall of the ridge on the opening side of the inner container is chamfered with a curved surface,
The outer peripheral wall of the cross-section shape of the front Symbol ridges of the inner container is
The center of the inner container, which is provided on the opening side of the inner container and is inclined so that the outer diameter of the outer peripheral wall increases from the opening side toward the bottom side opposite to the opening side. A first portion having a first inclination with respect to the axis;
The first portion is provided on the bottom side from the first portion, and is inclined with respect to the central axis of the inner container so that an outer diameter of the outer peripheral wall increases from the opening side toward the bottom side. A second portion having a second slope greater than the slope of 1 ;
That having a connecting portion that connects the first portion and the second portion, the packaging container.   The outer peripheral wall of the said inner ring is a packaging container of Claim 1 which contacts the inner wall of the said container main body in the state which has sealed the said container main body.   The packaging container according to claim 1, wherein a packing or a contact ring is provided outside the inner ring on the inner top surface of the lid. A lid of a packaging container,
An inner ring,
A functional substance containing container fitted inside the inner ring;
The inner ring protrudes inward from the tip portion, and has a protrusion that prevents the functional substance agent container from coming out of the lid,
The functional substance agent container includes an inner container having an opening at one end, a functional substance agent accommodated in the inner container, and a breathable sheet that seals the opening of the inner container,
The inner container has a plurality of grooves and ridges defined by the plurality of grooves on an outer peripheral wall thereof,
The outer peripheral wall of the ridge on the opening side of the inner container is chamfered with a curved surface,
The outer peripheral wall of the cross-section shape of the front Symbol ridges of the inner container is
The center of the inner container, which is provided on the opening side of the inner container and is inclined so that the outer diameter of the outer peripheral wall increases from the opening side toward the bottom side opposite to the opening side. A first portion having a first inclination with respect to the axis;
The first portion is provided on the bottom side from the first portion, and is inclined with respect to the central axis of the inner container so that an outer diameter of the outer peripheral wall increases from the opening side toward the bottom side. A second portion having a second slope greater than the slope of 1 ;
That having a connecting portion that connects the first portion and the second portion, the lid.

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