JP6115193B2 - Aluminum lid and container - Google Patents

Description

  The present invention relates to an aluminum lid, and more particularly to an aluminum lid for sealing a container filled with heat-sterilized contents, and a container sealed with the aluminum lid.

  Cup beverages in which beverages as contents are filled in paper containers are widely distributed and consumed. In a cup beverage, when the beverage to be filled needs to be sterilized, it may be filled in a state heated to a high temperature of 50 ° C. or higher, for example. Here, if the container is sealed with a cover material before the filled beverage is completely cooled, the gas such as air remaining in the container contracts as the beverage cools, and the inside of the container is decompressed. As a result, since the container is deformed so as to be recessed, there is a problem that the appearance is deteriorated.

  As a conventional technique for solving this problem, Patent Document 1 describes that a container is sealed with a lid member provided with a bulging portion. If it does in this way, it can invert so that a bulging part may protrude toward the inside of a container, can absorb the volume for which gas contracted, and can prevent a deformation of a container. Aluminum foil is illustrated as a material of the lid material.

Japanese Utility Model Publication No. 63-134908

  The inventors have found the following problems when trying to mass-produce cup beverages by forming a lid material having a bulging portion as described in Patent Document 1 using a laminated film including an aluminum layer.

  When manufacturing an aluminum lid material, press processing using a metal mold is performed on a laminated film having an aluminum layer as a main base material. At this time, defects such as cracks and pinholes may occur in the aluminum layer depending on molding conditions. For example, in order to increase the amount of absorption of the volume when the gas in the container contracts, it is necessary to increase the height of the bulging portion. In that case, the amount of drawing in so-called deep drawing must be increased, and at this time, the above problem becomes significant.

  One aspect of the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an aluminum lid material that is less prone to defects such as cracks and pinholes in the aluminum layer regardless of molding conditions. I will. An object of one embodiment of the present invention is to provide a container that is less likely to be deformed even if it is sealed early after filling with heated contents.

An aluminum lid material according to one aspect of the present invention includes an aluminum layer, a protective layer provided on a first surface of the aluminum layer, and a sealant layer provided on a second surface of the aluminum layer. A bulging portion that is formed of a laminate and protrudes to the side where the protective layer is provided; and a joining portion that is formed at a peripheral edge of the bulging portion, and the protective layer has a higher elongation than polyethylene terephthalate The rib is formed in the bulging portion, and the rib is formed in a central portion of the bulging portion, and the first rib is continuously formed from the first rib. A plurality of second ribs projecting to the periphery, wherein the width of the second rib monotonously decreases from the base end side located on the first rib side toward the tip end side, and the sealant layer The surface on which the side is provided is joined to the container body as a joining surface, whereby the container Wherein the sealing body.

  The protective layer is preferably made of a laminate of polyethylene terephthalate and nylon.

  When the aluminum lid member includes a wall portion that protrudes from the joint portion to the side where the sealant layer is provided and continues to the bulge portion, the diameter of the joint portion is d, and the projecting height of the bulge portion is Where h1 is the height of the wall and h2 is the height of the wall, it is desirable that (h1 + h2) / d <0.3.

  A container according to one aspect of the present invention includes a container body formed of paper or resin and filled with a high-temperature content, and the aluminum lid according to one aspect of the present invention, wherein the content is The container body is sealed with the aluminum lid member in a filled state.

According to the aluminum lid material of the present invention, the protective layer is made of a resin material having a higher elongation rate than that of polyethylene terephthalate.
According to the container of the present invention, after filling the heated contents, it is difficult to deform even if it is sealed early.

It is a perspective view which shows the aluminum cover material of 1st Embodiment of this invention. It is a figure which shows the layer structure of the same aluminum cover material. It is sectional drawing in the thickness direction of the same aluminum cover material. It is a perspective view which shows the state in which the same aluminum cover material was joined to the container. It is a perspective view which shows the state which the bulging part of the same aluminum cover material reversed after container sealing. It is sectional drawing which shows the same aluminum cover material in which the bulging part was reversed. It is a perspective view which shows the aluminum cover material of 2nd Embodiment of this invention. It is sectional drawing in the thickness direction of the same aluminum cover material. It is a perspective view which shows the aluminum cover material of 3rd Embodiment of this invention. It is a top view of the aluminum lid material. It is sectional drawing in the thickness direction of the same aluminum cover material. It is a perspective view which shows the aluminum cover material of the modification of this invention. It is sectional drawing of the thickness direction of the aluminum cover material of the other modification of this invention.

[First Embodiment]
A first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view showing an aluminum lid member 1 of the present embodiment. FIG. 2 is a diagram showing a layer structure of the aluminum lid member 1. FIG. 3 is a cross-sectional view in the thickness direction of the aluminum lid member 1, omitting the layer configuration.
The aluminum lid 1 is a lid used when sealing a relatively rigid container body such as paper or resin. As will be described in detail later, as shown in FIG. 1, the aluminum lid member 1 is provided at the peripheral portion, and a joint 10 that is joined to the container body, and the container body is prevented from being deformed after being joined to the container body. And a bulging portion 30.

  As shown in FIG. 2, the aluminum lid 1 includes an aluminum layer 2 as a base material made of aluminum foil, a protective layer 4 provided on the first surface of the aluminum layer 2, and a second layer of the aluminum layer 2. It is comprised with the laminated body containing the sealant layer 3 provided in the surface. The protective layer 4 and the sealant layer 3 are made of resin. The thickness of the aluminum layer 2 can be set as appropriate, and is preferably about 7 to 50 micrometers (μm), for example.

  The sealant layer 3 is formed of a heat-resistant resin such as polyethylene (PE) or polypropylene (PP), and has a thickness of about 50 μm, for example. The sealant layer 3 is joined to the container body by a known heat seal. Therefore, the surface of the aluminum lid 1 on which the sealant layer 3 is formed becomes a surface to be joined to the container body. In the following description, this surface may be referred to as a “joint surface”.

The protective layer 4 is made of a resin material having a higher elongation rate than polyethylene terephthalate (PET). As a resin material suitably used for the protective layer 4, for example, a laminate of PET and nylon, so-called hybrid nylon can be mentioned. The thickness of the protective layer 4 is, for example, about 15 to 20 μm. When the thickness of the protective layer 4 is 15 μm, the thickness of PET is about 3 μm, and the thickness of nylon is about 12 μm. As for the protective layer 4, PET is arrange | positioned at the upper layer side and nylon is arrange | positioned at the lower layer side (aluminum layer 2 side). The material of the protective layer 4 may be a resin material having a higher elongation rate than PET, and may not necessarily be a laminate of two types of resin materials such as hybrid nylon, but may be a single layer resin material.
In the following description, the surface on which the protective layer 4 is provided may be referred to as the “upper surface”.

  As shown in FIGS. 1 and 3, the aluminum lid member 1 includes a bulging portion 30 protruding to the side where the protective layer 4 is provided, a rib 31 formed on the bulging portion 30, and a bulging portion 30. The substantially annular joining part 10 formed in the periphery and the wall part 20 which protrudes from the joining part 10 to the side provided with the sealant layer 3 are provided. The aluminum lid 1 is formed in a substantially circular shape in plan view. The substantially annular joint portion 10 is formed with a predetermined width on the periphery of the bulging portion 30 that is substantially circular in plan view. When the joining surface of the joining part 10 is joined to the container body by heat sealing, the aluminum lid member 1 is attached so as to seal the container body. The joint 10 is formed with a handle 11 protruding outward in the circumferential direction. The handle 11 serves as a trigger for opening the sealed container. There is no restriction | limiting in particular in the number and shape of the handle 11, and it does not necessarily need to be provided.

  As shown in FIG. 3, the wall portion 20 rises so as to protrude from the joint portion 10 to the joint surface side. The wall 20 has an upper surface side end 20A and a joint surface side end 20B formed in a substantially circular shape in plan view. Further, the substantially circular radial dimension formed by the end 20B on the bonding surface side in the wall 20 is formed to be smaller than the substantially circular radial dimension formed by the upper end 20A.

  Since the cross-sectional shape in the thickness direction of the end portion 20 </ b> A on the upper surface side of the wall portion 20 is curved, wrinkles are prevented from occurring in the joint portion 10 when the aluminum lid member 1 is molded. By preventing wrinkling of the joint 10, the sealing performance of the container by the aluminum lid 1 is improved. The wrinkles generated at the joint portion 10 when the end portion 20A is linear can be reduced or eliminated by molding the end portion 20A so as to extend to the upper surface side.

  The center part of the aluminum lid member 1 is folded back from the end 20B on the joining surface side of the wall part 20 to the upper surface side, and a bulging part 30 that protrudes in a dome shape toward the upper surface is formed at the central part in plan view. Has been. As will be described later, the bulging portion 30 is reversed to the joining surface side due to a decrease in the internal pressure of the container after being attached to the container body, and prevents deformation of the container body.

  As shown in FIG. 3, the height from the end 20B on the joining surface side of the wall portion 20 to the apex of the bulging portion 30 is defined as “the protruding height h1 of the bulging portion 30”. The height from the end 20B on the joining surface side of the wall 20 to the end 20A on the upper surface side of the wall 20 is defined as “the height h1 of the wall 20”. Here, the protruding height h <b> 1 of the bulging portion 30 is set to be smaller than the height h <b> 2 of the wall portion, so that the bulging portion 30 does not protrude to the upper surface side than the joint portion 10.

  The bulging portion 30 is provided with a rib 31 for preventing deformation until it is joined to the container body. Eight ribs 31 of this embodiment are formed with a predetermined width so as to spread radially from the center in a plan view of the bulging portion 30.

  As described above, the aluminum lid member 1 having the joint portion 10, the wall portion 20, and the bulging portion 30 is desired after the laminated material having the three-layer structure shown in FIG. 2 is formed by, for example, known deep drawing. It can be manufactured in large quantities by punching into the shape of.

  The operation at the time of use of the aluminum lid member 1 configured as described above will be described by taking as an example a case where a heated beverage (content) is filled in a container.

  First, a container body made of paper or resin is filled with a high-temperature (50 ° C. or higher, for example, 70 ° C.) beverage for the purpose of sterilization or the like. The beverage may be filled in the container body after being heated to a high temperature, or may be heated to a high temperature after being filled in the container body.

  Before the filled beverage is sufficiently cooled, the aluminum lid material 1 is transported to bring the joint surface of the joint portion 10 into contact with the edge of the opening of the container body. When heat sealing is performed in a state where the substantially annular joint surface of the joint portion 10 is in contact with the edge of the opening over the entire circumference, the joint portion 10 is joined to the container body 50 as shown in FIG. Are sealed by the aluminum lid 1.

  Thereafter, the temperature of the beverage decreases due to the natural cooling of the beverage in the container 51 or the cooling of the container 51 for storage of the product. At this time, in the internal space of the container 51, gas such as air and inert gas existing in the head space which is the remaining space after the beverage is filled contracts and the volume decreases. Here, since the container 51 is sealed with the aluminum lid member 1, no gas flows into the container 51 from the outside, and the pressure in the container 51 decreases due to the contraction of the gas.

  If the rigidity of the container 51 cannot withstand the decrease in pressure, the container 51 is deformed by the atmospheric pressure, so that the appearance as a product is impaired, leading to a reduction in commercial value. Here, if the rigidity of the aluminum lid member 1 is made lower than that of the container body 50, as shown in FIGS. 5 and 6, the bulging portion 30 is moved to the joining surface side before the container body 50 is deformed. Invert so that it protrudes. This inversion reduces the effective volume in the container 51 and absorbs the volume reduction due to gas contraction. As a result, the pressure drop in the container 51 is suppressed and the deformation of the container body 50 is prevented.

  When manufacturing a large amount of beverage products as described above in which the container body 50 filled with a high-temperature beverage is sealed with the aluminum lid material 1, the mass-produced aluminum lid material 1 is generally manufactured by being stacked in the thickness direction. It is conveyed to the line. In this process, the bulging portion 30 may receive various external forces, and when the external force is deformed so that a part or all of the bulging portion 30 protrudes to the joining surface side before joining to the container body 50, The effect | action which absorbs the volume reduction | decrease by gas contraction falls. With respect to this problem, in the aluminum lid material 1 of the present embodiment, the rib 31 is provided on the bulging portion 30 to increase the rigidity, so even if an external force acts on the bulging portion 30 during transportation or the like. Deformation that reverses to the joining surface side hardly occurs, and the shape of the bulging portion 30 is suitably held until joining.

  As described above, according to the aluminum lid member 1 of the present embodiment, since the ribs 31 are provided on the bulging portion 30, the bulging portion 30 is difficult to be deformed by transportation, transportation, etc. until the container is sealed. The shape of the container is suitably held, and the deformation of the container after sealing can be reliably suppressed.

  In addition, since the protruding height h1 of the bulging portion 30 is set to be equal to or less than the height h2 of the wall portion 20, the object on the upper surface side of the aluminum lid member 1 comes before the joining portion 10 rather than the bulging portion 30. Easy to touch. Therefore, even when the frequency of external force acting on the bulging portion 30 is suppressed, the deformation of the bulging portion 30 is further suppressed, the dimension in the thickness direction of the aluminum lid 1 is suppressed, and the head space in the container is small. It can be difficult to touch the contents.

In the aluminum lid member of the present invention, the volume of the bulging portion may be set as appropriate so as to absorb the amount of change in volume assumed before and after the contraction of the gas and suppress deformation of the container. For example, if the head space is set to 30 milliliters (ml), the beverage filling temperature is set to 70 ° C., and the minimum temperature during transportation and storage is set to 10 ° C., the volume change amount x before and after contraction of the gas existing in the head space is By Boyle Charles's law,
30 / (273 + 70) = (30 + x) / (273 + 10)
x = 5.2
It becomes. Therefore, in this case, the deformation of the container can be suitably suppressed by setting the volume of the bulging portion to about 2 to 3 ml, and the deformation of the container can be reliably prevented by setting the volume to 2.6 ml or more. be able to.

That is, when the volume of the bulging portion 30 is 2 ml, the amount of change in gas volume x: 5.2 ml> the amount of volume change due to inversion of the bulging portion 30: 2 × 2 = 4 ml. If the difference between the two is about 1.2 ml, the deformation that impairs the appearance due to the overall strength of the container 51 does not occur, and even if the deformation occurs, the difference can be absorbed to the extent that the bottom of the container 50 is slightly recessed. Therefore, the object of the present invention can be sufficiently achieved.
In addition, when the contents to be filled have characteristics such as being easy to dissolve or absorb a part (for example, oxygen) or all of the gas existing in the head space, the volume of the gas to be dissolved or absorbed is taken into consideration. It is preferable to set the volume of the exit portion.

  As shown in FIG. 3, when the diameter of the joint 10 is d, the protruding height of the bulge 30 is h1, and the height of the wall 20 is h2, the relationship between these parameters is (h1 + h2) / d <0.3 is satisfied. As shown in FIG. 6, when the bulging portion 30 is inverted to the joining surface side, the dimension from the end portion 20A on the upper surface side of the wall portion 20 to the lowermost portion (top portion) of the bulging portion 30, that is, the wall portion The total height of 20 and the bulging portion 30 is (h1 + h2). If the diameter d of the joint portion 10 is 70 mm, (h1 + h2) <2.1 (mm), and the upper limit is 2.1 mm, the combined height of the wall portion 20 and the bulging portion 30 is High enough.

  In the conventional aluminum lid material, PET was used as a protective layer for the aluminum layer. In this case, defects such as cracks and pinholes may occur in the aluminum layer depending on the molding conditions when manufacturing the aluminum lid. When the height of the bulging part or the wall part is made relatively high as in the above-described conditions, it is necessary to increase the drawing amount of deep drawing, and defects in the aluminum layer are likely to occur. Therefore, for example, it has been difficult to manufacture an aluminum lid member having a dimension such that the diameter d of the joint portion is 70 mm and the combined height of the wall portion and the bulging portion (h1 + h2) is 2.1 mm.

  With respect to this problem, hybrid nylon is used as the protective layer 4 in the aluminum lid 1 of the present embodiment. As described above, hybrid nylon is composed of a laminate of PET and nylon, and has a higher elongation than PET alone. In particular, since PET is disposed on the upper layer side and nylon is disposed on the lower layer side, nylon is interposed between PET, which is a conventional protective layer material, and an aluminum layer. As a result, the internal stress generated when the PET is bent is absorbed by nylon having a high elongation rate and is not easily transmitted directly to the aluminum layer. As a result, by using hybrid nylon as the protective layer 4, it is possible to realize an aluminum lid material that is less prone to defects such as cracks and pinholes in the aluminum layer regardless of molding conditions.

  In the present embodiment, the example in which the rib 31 protrudes toward the upper surface side has been described. However, the rib may be formed to protrude toward the bonding surface side. However, it is preferable to project the rib to the upper surface side because the volume of the bulging portion can be increased and the effect of absorbing the volume change of the gas is increased.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS.
The aluminum lid material 61 of the present embodiment and the aluminum lid material 1 of the first embodiment differ in the aspect of the ribs.
In the following description, the same components as those already described are denoted by the same reference numerals and redundant description is omitted.

FIG. 7 is a perspective view showing the aluminum lid member 61, and FIG. 8 is a cross-sectional view in the thickness direction of the aluminum lid member 61.
As shown in FIGS. 7 and 8, the bulging portion 62 of the aluminum lid member 61 is provided with a substantially circular first rib 63 at the center when viewed in plan, and around the first rib 63, Two linear second ribs 64 are formed radially. The first rib 63 and the second rib 64 are not continuous, and are provided separately.

  The 1st rib 63 and the 2nd rib 64 of this embodiment also have the effect which suppresses a deformation | transformation of the bulging part 62 before joining to the container main body 50 similarly to the rib 31 of 1st Embodiment. Therefore, also in the aluminum lid member 61 of the present embodiment, the shape of the bulging portion 62 is suitably maintained until sealing with the container body, similar to the aluminum lid member 1 of the first embodiment, and after sealing with the container body. Can be suitably suppressed.

  Further, since the rib formed on the bulging portion 62 has the substantially circular first rib 63, a relatively flat region having a predetermined size is secured at the center of the bulging portion 62. Therefore, the aluminum pad 61 can be sucked and held and transported by bringing a suction pad or the like into contact with the upper surface of the first rib 63. Therefore, it is possible to efficiently transport the aluminum lid member 61 in the container sealing step and improve the manufacturing efficiency of the container filled and sealed with the contents.

  In the present embodiment, an example in which a part of the rib formed in the bulging portion 62 is the first circular rib 63 has been described. However, the shape of the first rib is not limited to a substantially circular shape, and has a predetermined size. If a relatively flat region is secured, the shape may be other shapes such as a polygonal shape or a wavy curved shape. Furthermore, a relatively flat region having a predetermined size may be secured by forming a rib only in a region excluding the central portion of the bulging portion.

  In the present invention, the “relatively flat region” means that there is no unevenness that prevents the suction and holding by the suction pad and the like, and is not limited to being completely flat, but a spherical surface having a small curvature radius or a gentle shape. Also includes curved surfaces. Further, the size of the relatively flat area to be secured may be appropriately determined in view of the size of the suction pad or the like actually used. However, if this area is too large, the area is not substantially reinforced with ribs, so it is preferable to set the area to the minimum necessary size.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS.
The aluminum lid material 81 of the present embodiment, the aluminum lid material 1 of the first embodiment, and the aluminum lid material 61 of the second embodiment are different in the form of ribs.
In the following description, the same components as those already described are denoted by the same reference numerals and redundant description is omitted.

FIG. 9 is a perspective view showing the aluminum lid member 81. FIG. 10 is a plan view showing the aluminum lid member 81. FIG. 11 is a cross-sectional view taken along the line AA ′ of FIG.
As shown in FIG. 9 and FIG. 10, the bulging portion 82 of the aluminum lid member 81 of the present embodiment protrudes around the first rib 83 formed at the center of the bulging portion 82 and the first rib 83. 5 second ribs 84. The first ribs 83 and the five second ribs 84 are not isolated and are formed continuously and integrally with each other. The first rib 83 has a substantially circular shape when viewed from above. The width of the second rib 84 monotonously decreases from the proximal end side located on the first rib 83 side toward the distal end side. More specifically, the second rib 84 has a substantially isosceles triangular shape with the edge on the first rib 83 side as a base. Other configurations of the aluminum lid member 81 are the same as those in the first and second embodiments.

  The first rib 83 and the second rib 84 of the present embodiment are also bulged before being joined to the container body 50 in the same manner as the rib 31 of the first embodiment and the first rib 63 and the second rib 64 of the second embodiment. The effect which suppresses a deformation | transformation of the part 82 is show | played. Therefore, in the aluminum lid member 81 of the present embodiment, the shape of the bulging portion 82 is the same as that of the aluminum lid member 1 of the first embodiment and the aluminum lid member 61 of the second embodiment until the container body 50 is sealed. It is suitably held, and deformation after sealing with the container body 50 can be suitably suppressed.

  Further, as can be seen from FIG. 11, the first rib 83 and the second rib 84 of the present embodiment are different from the rib 31 of the first embodiment and the first rib 63 and the second rib 64 of the second embodiment. The step at the edge of the rib is gradual, and the wall does not have a portion that rises rapidly. Further, as seen from FIG. 10, the second rib 84 is formed to be wider overall than the rib 31 of the first embodiment and the second rib 64 of the second embodiment, as seen from FIG. It is a substantially triangular shape whose width gradually narrows toward the tip side. For this reason, an aluminum lid material excellent in quality can be obtained because the aluminum layer is hardly cut or cracked.

  The embodiments of the present invention have been described above. However, the technical scope of the present invention is not limited to the above-described embodiments, and various modifications may be made to each component without departing from the spirit of the present invention. , Can be deleted.

  For example, in each of the embodiments described above, the rib shape is linear, substantially circular, or substantially triangular. However, the rib shape is not limited to this, and for example, as shown in FIG. In addition, a curved rib 65 such as an annular shape may be used, and there is no particular limitation as long as the deformation of the bulging portion can be suppressed. In the aluminum lid member 71 of the modification shown in FIG. 12, a plurality of annular ribs are provided concentrically. If it does in this way, when the temperature of the content falls after sealing, there exists an advantage that a bulging part reverses smoothly because the rib 65 functions as a crease | fold.

  Further, in each of the embodiments described above, the sealant layer 3 is directly formed on the second surface of the aluminum layer 2, but instead of this configuration, as shown in FIG. 13, the aluminum layer 2 and the sealant layer 3 A barrier layer 5 may be interposed therebetween. The barrier layer 3 can be formed of, for example, a resin material containing at least one of polyethylene terephthalate (PET), nylon, linear low density polyethylene (LLDPE), and ethylene-vinyl alcohol copolymer resin. According to this configuration, defects in the aluminum layer can be more reliably reduced, and resistance to the contents in the container can be increased.

  In the container of the present invention, the content to be filled is not limited to a liquid such as a beverage, but may be a solid. This is because if the solid is filled in a high temperature state, the temperature of the gas in the container increases, and the same phenomenon occurs because the temperature of the contents decreases after sealing.

1, 61, 71, 81 Aluminum cover material 2 Aluminum layer 3 Sealant layer 4 Protective layer 5 Barrier layer 10 Joint portion 20 Wall portions 30, 62, 82 Swelled portions 31, 65 Rib 50 Container body 51 Containers 63, 83 First Ribs 64, 84 Second rib

Claims (4)

An aluminum layer, a protective layer provided on the first surface of the aluminum layer, and a sealant layer provided on the second surface of the aluminum layer,
A bulging portion protruding to the side on which the protective layer is provided, and a joint portion formed on the periphery of the bulging portion,
The protective layer is made of a resin material having a higher elongation than polyethylene terephthalate,
Ribs are formed on the bulging portion,
The rib has a first rib formed at a central portion of the bulging portion, and a plurality of second ribs that continuously extend from the first rib and project around the first rib.
The width of the second rib is monotonously decreasing from the base end side located on the first rib side toward the tip end side,
An aluminum lid member for sealing the container body by joining the surface on the side where the sealant layer is provided to the container body as a joint surface. The aluminum lid material according to claim 1, wherein the protective layer is made of a laminate of polyethylene terephthalate and nylon. A wall portion protruding from the joint portion to the side where the sealant layer is provided and continuing to the bulging portion;
2. When the diameter of the joint is d, the protruding height of the bulge is h1, and the height of the wall is h2, (h1 + h2) / d <0.3 is satisfied. Or the aluminum cover material of 2. A container body that is made of paper or resin and whose contents are filled at a high temperature;
The aluminum lid member according to any one of claims 1 to 3 ,
With
A container characterized in that the container body is sealed with the aluminum lid member in a state where the contents are filled.

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