Can top and container

Abstract

To realize a can top which enables a functional component to be installed in a relatively simple method, and to realize a container.SOLUTION: A can top includes: a main body panel 4; an operated tool which is operated to form an opening at the main body panel 4; and a functional component storage tool 7 which is fixed to an inner surface side of the main body panel 4 and stores a functional component. The main body panel 4 has: a score panel 41; and an annular protruding part 42 protruding to the inner surface side of the main body panel 4 and defining a center area 44 including the score panel 41. The functional component storage tool 7 has: a first film portion and a second film portion partially bonded to each other; and a sealing part in which the functional component is sealed between the first film portion and the second film portion. An entire part of the functional component storage tool 7 is disposed at a position overlapping with the center area 44 in a plan view. The first film portion is fixed to a portion, which excludes the score panel 41, of the center area 44 and a part of the second film portion is fixed to a portion of the score panel 41 of the center area 44.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to can lids and containers. [Background technology]

[0002] Various methods have been proposed to improve the value of products by delivering functional ingredients to consumers along with the product. For example, Japanese Patent Laid-Open Publication No. 2006-168788 (Patent Document 1) discloses a container in which microcapsules containing fragrant ingredients are attached to the opening of the container, thereby releasing a flavor when opened. Furthermore, Japanese Patent Laid-Open Publication No. 2022-62504 (Patent Document 2) discloses a can lid with a fragrance port separate from the drinking port. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-168788 [Patent Document 2] Japanese Patent Publication No. 2022-62504 Summary of the Invention [Problem to be solved by the invention]

[0004] The technology of Patent Document 1 employs a configuration in which microcapsules containing aroma components are attached to the threads of the opening of a container, so that the lid also functions to prevent the aroma components from diffusing during display, etc. This configuration involves a complicated process for attaching the microcapsules to the threads of the opening, which could reduce the productivity of the container and the beverage product. Furthermore, the technology of Patent Document 2 makes it easier to deliver the aroma derived from the beverage itself to consumers, but fails to provide additional functional components.

[0005] Therefore, it is desirable to realize a can lid and a container that allow functional components to be installed in a relatively simple manner. [Means for solving the problem]

[0006] The can lid of the present invention is a can lid that is attached to the mouth of a can body, and comprises: a main body panel; an operable device that is provided on the outer surface of the main body panel and is operated to form an opening in the main body panel; and a functional ingredient container that is fixed to the inner surface of the main body panel and contains a functional ingredient, wherein the main body panel has a score panel in which the opening is formed when a predetermined force is applied, and an annular convex portion that protrudes on the inner surface of the main body panel and defines a central region that includes the score panel, and the functional ingredient container has a first film portion and a second film portion that are partially bonded together, and a sealing portion between the first film portion and the second film portion where the functional ingredient is sealed, and the entire functional ingredient container is positioned in a position that overlaps the central region in a planar view, and the first film portion is fixed to a portion of the central region other than the score panel, and a portion of the second film portion is fixed to a portion of the central region that is the score panel.

[0007] The container of the present invention is a container comprising a main body portion for accommodating contents and a closing portion for closing one end of the main body portion, wherein the closing portion comprises a main panel, an operable device provided on the outer surface of the main panel and operated to form an opening in the main panel, and a functional ingredient container fixed to the inner surface of the main panel and containing a functional ingredient, wherein the main panel has a score panel on which the opening is formed when a predetermined force is applied, and an annular convex portion protruding from the inner surface of the main panel and defining a central region including the score panel, and the functional ingredient container has a first film portion and a second film portion that are partially bonded together, and a sealing portion between the first film portion and the second film portion where the functional ingredient is sealed, and the entire functional ingredient container is positioned so as to overlap the central region in a planar view, and the first film portion is fixed to a portion of the central region other than the score panel, and a portion of the second film portion is fixed to a portion of the central region where the score panel is located.

[0008] With these configurations, when the score panel is separated from the surrounding area, the first and second film portions are torn apart, releasing the functional ingredient. Therefore, a mechanism for releasing the sealed functional ingredient when the container is opened can be easily realized, allowing the functional ingredient to be installed in a relatively simple manner. Furthermore, since the entire functional ingredient container is positioned so that it overlaps with the central region in a plan view, can lids can be easily stacked. This contributes to improving the productivity of can lids and containers.

[0009] Preferred embodiments of the present invention will be described below, but the scope of the present invention is not limited to the preferred embodiments described below.

[0010] In one aspect of the can lid according to the present invention, the sealing portion is preferably a polygon having five or more vertices in a plan view.

[0011] This configuration makes it easy to both arrange the entire functional ingredient container in a position that overlaps the central region in a plan view and increase the capacity of the sealed portion.

[0012] In one aspect of the can lid according to the present invention, it is preferable that the portion of the second film portion fixed to the score panel portion includes a portion that is not bonded to the first film portion.

[0013] With this configuration, the first film portion and the second film portion are easily peeled off when the score panel is separated from the surrounding area.

[0014] In one aspect of the can lid according to the present invention, it is preferable that the portion of the first film portion fixed to a portion other than the score panel includes a portion bonded to the second film portion.

[0015] With this configuration, the first film portion and the second film portion are easily peeled off when the score panel is separated from the surrounding area.

[0016] In one embodiment, the can lid of the present invention further comprises a seaming portion around the annular protrusion that is fastened to the can body, and it is preferable that the sum of the thickness of the operable device, the thickness of the main body panel, and the thickness of the functional ingredient container is smaller than the height of the seaming portion.

[0017] According to this configuration, the can lids of the present invention can be handled in the same manner as in conventional can lid handling devices that do not have functional ingredient containers, and the space required for storing the can lids can be reduced.

[0018] In one aspect of the can lid according to the present invention, the functional ingredient is preferably a fragrance.

[0019] This configuration allows for adding aroma to products such as beverages.

[0020] Further features and advantages of the present invention will become more apparent from the following description of exemplary and non-limiting embodiments, which is given with reference to the drawings. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is a cross-sectional view of a can container according to an embodiment. [Figure 2] FIG. 2 is a bottom view of the can lid according to the embodiment. [Figure 3] FIG. 2 is a cross-sectional view of a can lid according to the embodiment. [Figure 4] FIG. 2 is a plan view of a functional ingredient container according to an embodiment. [Figure 5] 1 is a cross-sectional view of a functional ingredient container according to an embodiment. [Figure 6] 1 is a schematic diagram showing a layer structure of a laminated film according to an embodiment. [Figure 7] FIG. 2 is a perspective view showing the can container according to the embodiment in an opened state. [Figure 8] FIG. 10 is a plan view of a functional ingredient container according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0022] Embodiments of a can lid and a container according to the present invention will be described with reference to the drawings. An example in which the present invention is applied to a canned beverage will be described below. A canned beverage is a product that is distributed and sold in a state in which a beverage B is contained in a can container 1, and the can container 1 has a can lid 2 and a can body 3 (FIG. 1). The can lid 2 is one embodiment of a can lid according to the present invention, and the can container 1 is one embodiment of a container according to the present invention. Note that the beverage B can be any type, such as a soft drink, an alcoholic beverage, or a milk beverage.

[0023] [Configuration of can container] The can container 1 has a can lid 2 and a can body 3 (Fig. 1). The can body 3 is a portion that functions to contain a beverage B (an example of a main body portion), and the can lid 2 is a portion that closes an opening at one end of the cylindrical can body 3 and forms the top surface of the can container 1 (an example of a closing portion). When producing a canned beverage, the can lid 2 and the can body 3 are supplied as separate members, and after the beverage B is filled into the can body 3 without the can lid 2 attached, the can lid 2 is seamed around the opening of the can body 3 to complete the canned beverage.

[0024] The material constituting the can container 1 may be a material commonly used as a metallic material constituting a can container. Examples include, but are not limited to, aluminum and aluminum alloys, iron and iron alloys, etc. The can lid 2 (main body panel 4) and the can body 3 may be made of the same material or different materials.

[0025] The can body 3 may be a known can body that can be combined with a can lid to form a can container. The full capacity of the can body 3 may be a capacity commonly used for stay-on-tab can containers for beverages. This full capacity may be, for example, 100 to 1000 mL, but is not limited to this. The amount of beverage B filled is less than the full capacity of the can body 3, for example, approximately 95% of the full capacity. Therefore, a void S exists in the can body 3 above the liquid level of beverage B.

[0026] [Configuration of can lid] The can lid 2 includes a main body panel 4, a stay-on tab 5 (an example of an operable tool), a seaming portion 6, and a functional ingredient container 7 (Figs. 1 and 2). The main body panel 4 is the central portion of the can lid 2 and has a score panel 41 and an annular protrusion 42. The stay-on tab 5 may be a known stay-on tab for stay-on tab type can containers, and is riveted to the main body panel 4.

[0027] The main body panel 4, stay-on tab 5, and seam 6 of the can lid 2 may be the same as those of known can lids. That is, the can lid 2 may be a known can lid with a functional ingredient container 7 attached to the inner surface. However, this does not prevent the main body panel 4, stay-on tab 5, and seam 6 from deviating from the configurations of conventional can lids.

[0028] The score panel 41 is a portion of the main body panel 4 that is surrounded by the score line 43. The score line 43 is thinner than other portions of the main body panel 4, and is therefore weaker than other portions. When a pulling force (one example of a predetermined force) is applied so as to raise the stay-on tab 5, the tip of the stay-on tab 5 pushes the score panel 41 downward, and the force of this pushing breaks the score line 43, forming an opening. The score panel 41 has a bead 41a that is recessed on the inner side of the main body panel 4 (the side that faces the inner side of the can container 1 when the can lid 2 is tightened onto the can body 3). The bead 41a serves to improve the strength of the score panel 41.

[0029] The score line 43 that defines the score panel 41 extends in a curved line that defines the generally oval shape of the score panel 41, but is not a closed curve. Specifically, a connection portion 41b where no score line 43 is provided exists near the rivet that secures the stay-on tab 5 to the body panel 4. The connection portion 41b is a portion that is not cut when the can container 1 is opened, and connects the score panel 41 to the remaining portion of the body panel 4.

[0030] The annular protrusion 42 is a portion that protrudes toward the inner surface of the main body panel 4, and is also referred to as a countersink by those skilled in the art of can lids. The annular protrusion 42 defines a substantially circular central region 44 that includes the score panel 41.

[0031] The central region 44 is further divided into a first portion 45 and a second portion 46. The first portion 45 includes the score panel 41, and the second portion 46 surrounds the first portion 45. In a plan view, the stay-on tab 5 is contained within the first portion 45. As shown in FIG. 2 , the width of the score panel 41 is wider than the width of the stay-on tab 5 (the width in the vertical direction in FIG. 2 ; the same applies below). Therefore, the first portion 45 is wider on the side where the score panel 41 is present and narrower on the opposite side. Correspondingly, the second portion 46 is narrower near the score panel 41 and wider farther from the score panel 41. Furthermore, the first portion 45 protrudes beyond the second portion 46 on the inner surface of the main panel 4. If the boundary between the first portion 45 and the second portion 46 is inclined, the inclined portion is included in the second portion 46.

[0032] The seaming portion 6 is a portion that is fastened to the can body 3 when the can lid 2 is seamed around the can body 3, and is provided around the annular protrusion 42. The seaming portion 6 is formed by bending. The sum H1 of the thickness of the stay-on tab 5, the thickness of the main panel 4, and the thickness of the functional ingredient container 7 is smaller than the height H2 of the seaming portion 6. As a result, when multiple can lids 2 are stacked (FIG. 3), the functional ingredient container 7 does not interfere with other components of the can lid 2 (particularly the stay-on tab 5). This allows the can lids 2 to be stored and used in the same way as conventional can lids that do not have a functional ingredient container 7. Therefore, the can lids 2 according to this embodiment can be handled in equipment that handles conventional can lids. Furthermore, the space required for storing the can lids 2 can be reduced.

[0033] The functional ingredient container 7 is a member that contains various functional ingredients that can add value to canned beverages (Figs. 4 and 5). Here, an example will be described in which flavoring F (an example of a functional ingredient) is contained in the functional ingredient container 7.

[0034] Flavoring F is selected, for example, from the perspective of improving the user experience of consumers who are about to drink beverage B. Specifically, if a flavor similar to the flavor of beverage B is used, such as combining a lemon scent with a lemon-flavored chuhai beverage, consumers who open can container 1 and are about to drink beverage B can enjoy the aroma of beverage B even more.

[0035] The functional ingredient container 7 has a first film portion 71, a second film portion 72, and a sealed portion 73 in which the fragrance F is sealed between the first film portion 71 and the second film portion 72. When the first film portion 71 and the second film portion 72 are torn around the sealed portion 73 or when the bonded portion 75 of the first film portion 71 and the second film portion 72 is peeled off, the fragrance F is released from its sealed state.

[0036] The functional ingredient container 7 has a structure in which a single membrane is folded and bonded together. The first membrane portion 71 and the second membrane portion 72 are portions of the membrane defined by a fold line 74. With the fold line 74 as the base end, the length of the first membrane portion 71 is shorter than the length of the second membrane portion 72. Therefore, in a plan view, the functional ingredient container 7 has an overlapping portion of the first membrane portion 71 and the second membrane portion 72 on the base end side with the fold line 74 as the base end, and a portion where only the second membrane portion 72 extends on the distal end side with the fold line 74 as the base end.

[0037] The sealed portion 73 is a portion where the fragrance F is sealed between the first film portion 71 and the second film portion 72. The sealed portion 73 is defined by the first film portion 71 and the second film portion 72 in the thickness direction (the direction intersecting the paper surface of FIG. 4), and is defined by the fold line 74 and the bonded portion 75 in the planar direction (the direction along the paper surface of FIG. 4). The bonded portion 75 is a portion where the overlapping first film portion 71 and the second film portion 72 are bonded together. The method of forming the bonded portion 75, i.e., the method of bonding the first film portion 71 and the second film portion 72, is not limited, and methods such as bonding by heat welding or bonding with an adhesive can be used.

[0038] It is preferable that the adhesive strength of the bonding portion 75 is less than 2 N / 15 mm, since this makes it relatively easy to open the sealed portion 73. The adhesive strength of the bonding portion 75 is more preferably less than 1 N / 15 mm. When the bonding portion 75 is formed by thermal welding, the adhesive strength can be adjusted by adjusting the materials constituting the bonding portion 75 (described below) and the bonding conditions (temperature, pressure, etc.). It is also preferable that the adhesive strength of the bonding portion 75 is less than the fixing strength of the functional ingredient container 7 to the main panel 4. This strength relationship makes it easy to unseal the fragrance F without removing the functional ingredient container 7 from the can lid 2.

[0039] The sealed portion 73 is a polygon having six vertices, i.e., a hexagon, in a planar view. Of the six sides of the hexagon, one side is a fold line 74, and the other five sides are bonded portions 75. The shape of the sealed portion 73 in a planar view can also be described as a rectangle with two vertices cut off. By forming the sealed portion 73 in this shape, the sealed portion 73 can be made as large as possible while still overlapping with the second portion 46 in a planar view. Furthermore, the sealed portion 73 is arranged such that the farthest bonded portion 75a of the bonded portions 75 defining the sealed portion 73 is located along the boundary between the first portion 45 and the second portion 46. These features maximize the compatibility between containing the sealed portion 73 within the central region 44 (the sealed portion 73 does not interfere with the annular protrusion 42) and sealing as much of the flavoring F as possible in the sealed portion 73.

[0040] The first film portion 71 has a free portion 71a that is not bonded to the second film portion 72 and does not define the sealed portion 73. The free portion 71a is provided at the tip portion of the first film portion 71, the base end of which is the fold line 74. As shown in Figures 4 and 5, the free portion 71a is provided further distally than the bonded portion 75a.

[0041] The functional ingredient container 7 is disposed in a position where the entire container overlaps with the central region 44 in a plan view. In other words, the functional ingredient container 7 does not interfere with the annular protrusion 42.

[0042] The functional ingredient container 7 is fixed to the inner surface of the main body panel 4 by adhesive 8. More specifically, the functional ingredient container 7 has a first film portion 71 and a second film portion 72 fixed to different locations on the main body panel 4 by adhesive 8. The adhesive 8 can be, for example, a hot melt adhesive.

[0043] The first film portion 71 is fixed to a portion of the central region 44 other than the score panel 41, more specifically, to the second portion 46. The adhesive 8 that fixes the first film portion 71 is bonded in the second portion 46 along the boundary between the first portion 45 and the second portion 46. On the side of the first film portion 71, the free portion 71a and the far-end bonding portion 75a are in contact with the adhesive 8. That is, the free portion 71a and the far-end bonding portion 75a of the first film portion 71 are fixed to the main panel 4 (second portion 46).

[0044] The second film portion 72 is fixed to the portion of the central region 44 that is on the score panel 41, more specifically, to an area that includes the bead 41a. The adhesive 8 that fixes the second film portion 72 is adhered to an area that includes the bead 41a. The bead 41a is a recessed portion on the inner surface of the main panel 4, and the adhesive 8 is adhered to an area that includes this recessed portion. On the side of the second film portion 72, the portion that is not bonded to the first film portion 71 is in contact with the adhesive 8. That is, the portion of the second film portion 72 that is not bonded to the first film portion 71 is fixed to the score panel 41.

[0045] As described above, the first film portion 71 is fixed to the second portion 46, and the second film portion 72 is fixed to the bead 41a. On the inner surface side of the main panel 4, the second portion 46 and the bead 41a are both recessed portions relative to the first portion 45. By using such recessed portions as the fixing points for the first film portion 71 and the second film portion 72, the thickness of the adhesive portion including the adhesive 8 can be reduced.

[0046] The functional ingredient container 7 (first film portion 71 and second film portion 72) includes, for example, a laminate film. An example of the structure of the laminate film 9 constituting the functional ingredient container 7 is shown in the schematic diagram of Figure 6. The laminate film 9 includes a reinforcing layer 91, an adhesive layer 92, a barrier layer 93, and a thermally welded layer 94. Note that Figure 6 is merely a schematic diagram, and the thickness ratios of the layers shown in Figure 6 do not necessarily correspond to the actual thickness ratios. For example, the functional ingredient container 7 may have a structure in which the laminate film 9 is folded over with the thermally welded layers 94 on the inside, and the thermally welded layers 94 are bonded together.

[0047] The reinforcing layer 91 is a layer provided for the purpose of ensuring the overall strength of the laminated film 9, and is made of, for example, a polyester resin (such as biaxially oriented polyethylene terephthalate).

[0048] The adhesive layer 92 is a layer that serves to bond the reinforcing layer 91 and the barrier layer 93 together, and is made of, for example, a urethane resin.

[0049] The barrier layer 93 is a layer that prevents the flavoring F sealed in the sealed portion 73 from permeating out of the sealed portion 73 and prevents substances outside the sealed portion 73 (such as components of the beverage B and gas components in the voids S) from permeating into the sealed portion 73, and is formed, for example, from a resin on which an inorganic material is vapor-deposited (such as alumina-vapor-deposited polyethylene terephthalate) or a metal foil such as aluminum foil. When the barrier layer 93 includes a resin on which an inorganic material is vapor-deposited, the vapor-deposited surface is disposed on the adhesive layer 92 side.

[0050] The thermal welding layer 94 is a layer for forming the bonded portion 75 by thermal welding, and is formed, for example, from a copolymer polyester resin. Each layer may contain additives such as a lubricant, an antistatic agent, an antiblocking agent, an antioxidant, an ultraviolet absorber, a colorant, and a plasticizer. The material constituting the thermal welding layer 94 is preferably a material that can make the adhesive strength of the bonded portion 75 less than 2 N / 15 mm, and more preferably a material that can make the adhesive strength less than 1 N / 15 mm. The thickness of the thermal welding layer 94 can be, for example, 0.1 μm or more and 10 μm or less.

[0051] The dimensions of the functional ingredient container 7 are preferably such that it cannot pass through the opening formed by breaking the score line 43. This dimensional relationship can be achieved, for example, by making the width of the functional ingredient container 7 larger than the width of the score panel 41. Note that the width of the functional ingredient container 7 refers to the maximum value of the dimension of the functional ingredient container 7 in a planar view, and the width of the score panel 41 refers to the maximum value of the dimension of the score panel 41 in a planar view.

[0052] [Method for manufacturing can lids] Next, a method for manufacturing the can lid 2 according to this embodiment will be described. As an example, the can lid 2 can be manufactured by fixing a functional ingredient container 7 to a conventional can lid (referred to as a can lid base) that includes a main body panel 4, a stay-on tab 5, and a seaming portion 6. Fixing the functional ingredient container 7 to the can lid base includes fixing a first film portion 71 to a portion of the central region 44 other than the score panel 41, and fixing a second film portion 72 to a portion of the central region 44 that is adjacent to the score panel 41. Fixing of the first film portion 71 and fixing of the second film portion may be performed simultaneously or sequentially.

[0053] The procedure for fixing the functional ingredient container 7 to the can lid raw material is not limited, but for example, a method can be used in which adhesive 8 (such as a hot melt adhesive) is applied to the can lid raw material, the functional ingredient container 7 is placed on top of it, and then the functional ingredient container 7 is pressed against the main body panel 4. In this case, the areas where the adhesive 8 is applied are the area along the boundary between the first portion 45 and the second portion 46 and the bead 41a.

[0054] The manufacturing method for the can lid 2 according to this embodiment includes fixing the first film portion 71 to a portion of the central region 44 other than the score panel 41. More specifically, it includes fixing at least the free portion 71a to a portion other than the score panel 41. At this time, the far-end bonding portion 75a may be fixed to the portion other than the score panel 41 together with the free portion 71a. When the method of pressing the functional ingredient container 7 against the main body panel 4 is adopted, the portion including the free portion 71a is pressed against the main body panel 4.

[0055] The manufacturing method of the can lid 2 according to this embodiment includes fixing the second film portion 72 to the portion of the central region 44 corresponding to the score panel 41. More specifically, it includes fixing the second film portion 72 to an area including the bead 41a.

[0056] As described above, when the functional ingredient container 7 is fixed to the can lid blank by a method that includes pressing the functional ingredient container 7 against the main panel 4, the sealed portion 73 may be subjected to a pressing force. If this pressing force increases the internal pressure of the sealed portion 73, the bonded portion 75 or the like may be damaged, potentially breaking the seal on the fragrance F. Opening the sealed portion 73 during the manufacturing process of the can lid 2 is undesirable and must be avoided. Therefore, when pressing the functional ingredient container 7 against the main panel 4, it is desirable to press an area other than the sealed portion 73. In this embodiment, the far-end bonded portion 75a and the free portion 71a are present outside the far end of the sealed portion 73, leaving a relatively large area outside the sealed portion 73. Therefore, even if the position of the functional ingredient container 7 is slightly shifted when pressing the functional ingredient container 7 against the main panel 4, the area subjected to the pressing force is easily limited to the range of the far-end bonded portion 75a and the free portion 71a, and the sealed portion 73 is less likely to be subjected to the pressing force. In other words, in this embodiment, by providing a free portion 71a in the functional ingredient container 7, the tolerance range for alignment when pressing the functional ingredient container 7 against the main body panel 4 is expanded, thereby successfully increasing the productivity of the can lid 2.

[0057] [How to use the can container] When the stay-on tab 5 is operated to open the can container 1, the score panel 41, which has been separated at the score line 43, is pushed down to form an opening. At this time, the score panel 41 moves downward, and the second film portion 72 also moves downward. Meanwhile, the portion to which the first film portion 71 is fixed does not move. Therefore, as the score panel 41 moves, stress acts in a direction that pulls the first film portion 71 and the second film portion 72 apart. When this stress breaks the adhesion of the bonded portion 75, the sealing portion 73 is unsealed and the fragrance F is released.

[0058] FIG. 7 is a perspective view of the can lid 2 and its surroundings of an opened can 1. To avoid complication, the functional ingredient container 7 is omitted from FIG. 7 . When the can 1 is opened, the score panel 41 moves downward in an arc around the connection portion 41b. Therefore, the movement distance of the score panel 41 during opening increases the farther it is from the connection portion 41b. By fixing the tip of the second film portion 72 to a position on the bead 41a where this movement distance increases, the first film portion 71 and the second film portion 72 are separated significantly when the can 1 is opened, allowing a large amount of the fragrance F to leak (expose). In this case, the consumer will experience a sharp fragrance sensation upon opening. Conversely, by fixing the second film portion 72 to a position on the bead 41a where this movement distance decreases, the distance between the first film portion 71 and the second film portion 72 decreases when the can 1 is opened, reducing the amount of the fragrance F leaking (exposing). In this case, the consumer will experience a subtle fragrance for a long time. By positioning the functional ingredient container 7 in consideration of the movement of the score panel 41 when the package is opened, the manner in which the fragrance flows out can be freely controlled, providing the consumer with an impressive fragrance experience.

[0059] Other Embodiments Finally, other embodiments of the can lid and container according to the present invention will be described. Note that the configurations disclosed in the following embodiments can be applied in combination with the configurations disclosed in other embodiments, unless a contradiction occurs.

[0060] In the above embodiment, the sealing portion 73 is hexagonal in plan view. However, the shape of the sealing portion is not limited in the present invention. As an example, a sealing portion 7A according to a modified example is shown in FIG. 8.

[0061] In the above embodiment, the functional ingredient container 7 has a structure in which a single membrane is folded and bonded together, and the first membrane portion 71 and the second membrane portion 72 are portions of the membrane defined by the fold line 74. However, in the present invention, the first membrane portion 71 and the second membrane portion 72 may be separate bodies. Furthermore, regardless of the presence or absence of a fold line, it is optional whether or not the fold line is involved in defining the sealed portion.

[0062] In the above embodiment, the first film portion 71 has a free portion. However, in the present invention, the presence or absence of the free portion is optional. That is, the entire first film portion except for the portion defining the sealing portion may be bonded to the second film portion.

[0063] In the above embodiment, the free portion 71a and the far-end bonding portion 75a of the first film portion 71 are fixed to the main panel 4 (second portion 46). However, in the present invention, any portion of the first film portion may be fixed to a portion other than the score panel in the central region of the main panel.

[0064] In the above embodiment, an example has been described in which the portion of the second film portion 72 that is not bonded to the first film portion 71 is fixed to the score panel 41. However, in the present invention, any portion of the second film portion may be fixed to the score panel.

[0065] In the above embodiment, an example has been described in which the functional ingredient container 7 is fixed to the main body panel 4 by adhesive 8. However, in the present invention, the method for fixing the functional ingredient container to the main body panel is not limited, and in addition to the adhesives exemplified above, thermal welding, adhesive tape, etc. may also be used for fixing.

[0066] In the above embodiment, the total thickness H1 of the stay-on tab 5, the main panel 4, and the functional ingredient container 7 is smaller than the height H2 of the seaming portion 6. However, the present invention does not limit the dimensional relationship between the various parts of the can lid. Furthermore, the method of attaching the can lid to the can body is not limited to seaming, and may include gluing or fitting.

[0067] In the above embodiment, a configuration in which a flavoring F is contained in the functional ingredient container 7 has been described as an example. However, in the present invention, functional ingredients other than flavorings may be contained in the functional ingredient container instead of or in addition to the flavorings in the above embodiment. Here, functional ingredients refer to ingredients that can add value to the contents, including flavorings. With this configuration, for example, the functional ingredient can be added to the contents immediately before the consumer consumes the contents. In this case, it is preferable to configure the functional ingredient so that it is added to the contents when the functional ingredient seal is released, and for example, a solid or liquid functional ingredient is preferably sealed. Examples of functional ingredients other than flavorings include water, alcohol, cooking oil, spices, seasonings, and other food additives (e.g., baking soda) when the contents are food. The functional ingredient may be one type or multiple types. It is known that adding water to whiskey causes the flavorings to gather on the surface of the whiskey, enhancing its aroma. This way of drinking whiskey is called the one-drop method. In the present invention, when the content is whiskey, if the functional ingredient is water, one drop can be easily realized when the container is opened. Also, adding sodium bicarbonate to beer causes foaming. In the present invention, when the content is beer, if the functional ingredient is an aqueous sodium bicarbonate solution, a beer product that causes foaming when the container is opened can be realized.

[0068] In the above embodiment, an example has been described in which only fragrance F is sealed in the sealed portion 73. However, in the present invention, a functional ingredient may be sealed in the sealed portion together with other objects. For example, a sheet made of a material such as a polymer or fiber may be sealed in the sealed portion after adding a functional ingredient by adsorption, support, impregnation, or the like.

[0069] Regarding other configurations, it should be understood that the embodiments disclosed in this specification are illustrative in all respects and that the scope of the present invention is not limited thereby. Those skilled in the art will easily understand that appropriate modifications are possible without departing from the spirit of the present invention. Therefore, other embodiments modified without departing from the spirit of the present invention are naturally included in the scope of the present invention. [Industrial Applicability]

[0070] The present invention can be applied to containers for beverages and the like. [Explanation of symbols]

[0071] 1: Can container 2: Can lid 3: Can body 4: Main panel 41: Score Panel 41a: Bead 41b: Connection part 42: Annular convex part 43: Score line 44: Central area 45: First part 46: Second part 5: Stay-on tab 6: Sealing section 7: Functional ingredient container 71:First membrane part 71a: Free part 72:Second membrane part 73: Sealed part 74: Turn line 75: Pasting part 75a: Far end side bonding part 8: Adhesive 9: Laminated film 91: Reinforcement layer 92: Adhesive layer 93: Barrier layer 94: Heat welding layer F: Fragrance B:Beverage S: void

Claims

1. A can lid to be attached to the mouth of a can body, The main panel and an operating tool provided on an outer surface side of the main body panel and operated to form an opening in the main body panel; a functional ingredient container fixed to the inner surface side of the main body panel and containing a functional ingredient; The body panel is a score panel in which the opening is formed when a predetermined force is applied; an annular protrusion protruding from the inner surface of the main body panel and defining a central region including the score panel; The functional ingredient container is a first film portion and a second film portion that are partially bonded together; a sealing portion in which the functional ingredient is sealed between the first film portion and the second film portion, the functional ingredient container is disposed in a position where the entirety of the functional ingredient container overlaps with the central region in a plan view, the first film portion is fixed to a portion of the central region other than the score panel; A can lid, wherein a portion of the second film portion is fixed to a portion of the score panel in the central region.

2. 2. The can lid according to claim 1, wherein the sealing portion is a polygon having five or more vertices in a plan view.

3. 2. The can lid according to claim 1, wherein the portion of the second film portion fixed to the portion of the score panel includes a portion that is not bonded to the first film portion.

4. 2. The can lid according to claim 1, wherein the part of the first film portion fixed to the part other than the score panel includes a part bonded to the second film portion.

5. a seaming portion that is fastened to the can body portion around the annular protrusion, 2. The can lid according to claim 1, wherein the sum of the thickness of the operable member, the thickness of the main body panel, and the thickness of the functional ingredient container is smaller than the height of the seaming portion.

6. The can lid according to any one of claims 1 to 5, wherein the functional ingredient is a fragrance.

7. A container comprising a body portion for accommodating contents and a closure portion for closing one end of the body portion, The closure portion is The main panel and an operating tool provided on an outer surface side of the main body panel and operated to form an opening in the main body panel; a functional ingredient container fixed to the inner surface side of the main body panel and containing a functional ingredient; The body panel is a score panel in which the opening is formed when a predetermined force is applied; an annular protrusion protruding from the inner surface of the main body panel and defining a central region including the score panel; The functional ingredient container is a first film portion and a second film portion that are partially bonded together; a sealing portion in which the functional ingredient is sealed between the first film portion and the second film portion, the functional ingredient container is disposed in a position where the entirety of the functional ingredient container overlaps with the central region in a plan view, the first film portion is fixed to a portion of the central region other than the score panel; A container wherein a portion of the second membrane portion is secured to a portion of the central region of the score panel.

Images