CN116507561A

CN116507561A - Tank container

Info

Publication number: CN116507561A
Application number: CN202180058847.3A
Authority: CN
Inventors: 盐谷正博; 宫下理央
Original assignee: Daiwa Can Co Ltd
Current assignee: Daiwa Can Co Ltd
Priority date: 2020-07-31
Filing date: 2021-07-28
Publication date: 2023-07-28
Also published as: EP4190709A1; TW202216546A; WO2022025112A1; AU2021317947A1; US20230166884A1; JP2022026403A

Abstract

The tank (100) is provided with a tank lid (1) and a tank body (101). The can lid (1) has: a circular panel part (21) with a circular dividing line (31) dividing the area forming the drinking opening on the outer periphery side; a groove (22) connected to the outer periphery of the panel (21) and recessed from the panel; a caulking part (32) provided on the panel part (21) and abutting the inner side of the score line (31) in the radial direction; a pull ring (12) fixedly connected to the opening operation of the riveting part; and a flange (23) connected to the groove (22), wherein a panel outer peripheral portion (21 a) that is inclined toward the radial inner side toward the axial outer side is included between the score line (31) and the groove (22). The can body (101) has a cylindrical main body (111), a fastening portion (114) fastened to the flange (23), and a tapered portion (113) provided between the main body (111) and the fastening portion (114) and having a diameter reduced from the main body (111) toward the fastening portion (114), and is filled with foamable contents. The ratio of the diameter of the score line (31) of the tank container (100) to the inner diameter of the main body (111) is 0.6-0.8.

Description

Tank container

Technical Field

The present invention relates to a can container for use with a frothed beverage.

Background

For example, as disclosed in japanese patent application laid-open No. 2000-264355, a can lid having an opening in a part of a panel portion of the can lid is used as a can container for a foaming beverage such as beer.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2000-264355

Disclosure of Invention

Problems to be solved by the invention

The opening of the can container, which is a drinking opening, is smaller than the opening of a beverage container such as a cup or a can (jug). Therefore, the can container has a problem that it cannot enjoy the drinking feeling of the foamed beverage by drinking with a glass, a can, or the like.

Further, even if a full-open type can lid used as a lid of a can such as a solid food is used as a can lid, the contents are filled in advance in a container, and thus there is a problem that foaming is difficult to be obtained when beer is poured into a cup.

Accordingly, an object of the present invention is to provide a can container which can be drunk with a sense of drinking in a beverage container and which can obtain foamability.

Means for solving the problems

According to one aspect of the present invention, a tank container includes: a can lid having: a circular panel part, on the outer periphery of which a circular dividing line is formed for dividing the area forming the drinking opening; a groove portion connected to an outer peripheral edge of the panel portion and recessed from the panel portion; a caulking portion provided in the panel portion and radially abutting the inner side of the score line; a pull ring fixedly connected to the rivet joint for opening operation; and a flange portion connected to the groove portion; the panel portion includes a panel outer peripheral portion inclined toward a radial inner side toward an axial outer side at a position between the score line and the groove portion; the tank body is provided with a cylindrical main body part, a fixedly connected part fixedly connected with the flange part and a cone part which is arranged between the main body part and the fixedly connected part and is reduced in diameter from the main body part to the fixedly connected part; the tank is filled with foamable contents, the internal pressure is positive, and the ratio of the diameter of the score line to the inner diameter of the main body is 0.6-0.8.

Effects of the invention

According to the present invention, a can container that can be drunk with a sense of drinking with a beverage container and that can achieve foamability can be provided.

Drawings

Fig. 1 is a cross-sectional view showing the structure of a tank container according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view showing the configuration of the main part of the tank.

Fig. 3 is a cross-sectional view showing a structure in opening a can lid of a can container.

Fig. 4 is a cross-sectional view showing a structure of a can lid of a can container after opening.

Fig. 5 is a plan view showing the structure of the can lid.

Fig. 6 is a cross-sectional view showing the structure of the can lid.

Fig. 7 is a cross-sectional view showing the structure of the can lid in an enlarged manner.

Detailed Description

The configuration of a tank container 100 according to an embodiment of the present invention will be described below with reference to fig. 1 to 7.

Fig. 1 is a cross-sectional view showing the structure of a tank container 100 according to an embodiment of the present invention. Fig. 2 to 4 are sectional views showing the lid 1 and the can body 101 of the can container 100 in an enlarged manner. Fig. 2 shows a state before opening the can lid 1, fig. 3 shows a state during opening the can lid 1, and fig. 4 shows a state after opening the can lid 1.

Fig. 5 is a plan view showing the structure of the can lid 1 before being fixed to the can body 101, and fig. 6 is a cross-sectional view showing the structure of the can lid 1 before being fixed to the can body 101. Fig. 7 is a sectional view showing the structure of the can lid 1 in an enlarged manner.

As shown in fig. 1 to 5, the can container 100 is a so-called fully-opened container in which the can lid 1 is fully opened. The tank container 100 is a positive pressure tank whose internal pressure is positive. The tank container 100 is filled with foamable content as the content. The foamable content herein refers to a foamed beverage. Examples of the sparkling beverage include beer, sparkling wine, beer-like alcoholic beverages, beer-like nonalcoholic beverages, and the like. The foaming beverage is not limited to these.

The can 100 includes a can lid 1 and a can body 101. After the can container 100 is filled with the beverage, the can lid 1 and the can body 101 are integrally assembled by seaming the can lid 1 to the can body 101, for example, double seaming. Thereby, the can lid 1 and the can body 101 of the can 100 are hermetically fixed by the crimp portion 100 a. The can container 100 is, for example, a so-called two-piece can in which the bottom of the can body 101 is integrated with the main body.

As shown in fig. 1 to 7, the can lid 1 includes a can lid body 11 and a tab (can lid tab) 12. The can lid 1 is fully opened so that the opening portion occupies a large part of the panel portion 21 and is opened over the entire surface. The can lid 1 is manufactured by press working a metal plate to form a can lid body 11 and a tab 12 in different steps, and then fixing the tab 12 to a panel portion 21. The metal plate for forming the can lid body 11 includes an aluminum alloy plate having a resin coating formed on the surface thereof, a surface-treated steel plate, and the like. The metal plate forming the tab 12 may be, for example, an aluminum alloy plate.

As shown in fig. 1 to 3 and 5 to 7, the can lid body 11 includes a panel portion 21, an annular groove portion 22 provided at an outer peripheral edge of the panel portion 21, and a flange portion 23 provided at an outer peripheral edge of the annular groove portion 22.

As shown in fig. 5 and 6, the panel portion 21 is formed in a circular plate shape. The panel portion 21 includes a score line 31, a caulking portion 32, an auxiliary score line 33, a protection portion 34, and a finger-fit recess 35. The panel portion 21 may have a display portion 36 or the like for displaying braille or the like of the content of the tank container 100. The panel portion 21 may have projections and recesses for commodity identification, design, reinforcement, and the like.

The panel outer peripheral portion 21a, which is a portion between the score line 31 of the panel portion 21 and the groove portion 22, is inclined outward in the axial direction of the panel portion 21 from the radially outer side toward the center side of the panel portion 21. In other words, as shown in fig. 1, when the can 100 is in the upper position of the can lid 1, the panel outer peripheral portion 21a of the panel portion 21 tapers upward in the radial direction of the can lid 1 from the outside (the groove portion 22 side) toward the inside (the score line 31 side). The panel outer peripheral portion 21a has a convex portion 21b on the inner surface of the can 101 side on the score line 31 side. The convex portion 21b is, for example, annular along the score line 31, and protrudes inward of the can 100 from the inner surface of the panel outer peripheral portion 21 a.

As shown in fig. 3, the score line 31 is broken by the opening operation of the tab 12. The score line 31 is broken to form an opening of the can lid 1 in the panel portion 21. In other words, the score line 31 surrounds a region that becomes an opening piece of the panel portion 21 when the opening portion of the can lid 1 is formed. Since the can lid 1 is fully opened, the score line 31 is formed in a circular shape or a substantially circular shape, for example, as shown in fig. 7. As shown in fig. 3 and 4, the score line 31 is broken, and the radially inner portion of the score line 31 of the panel 21 can be removed from the radially outer portion of the score line 31 of the panel 21 together with the caulking portion 32 as an opening piece.

The score line 31 is a groove that constitutes a frangible portion that breaks a part of the panel portion 21 in the shape of an opening by an external force. As shown in fig. 7, the score line 31 is, for example, a wedge-shaped groove provided on the outer surface of the panel portion 21, and a part of the panel portion 21 is formed thin by the score line 31. Here, the outer surface of the panel portion 21 is a main surface exposed to the outside in a state where the can body 101 of the can container 100 is provided with the can lid 1, that is, a surface constituting the upper surface of the can container 100.

The scribe line 31 is disposed in the protection portion 34, for example. The score line 31 is not limited to a circular shape, and may be formed in a partially intermittent circular arc shape, for example, so that most of the panel portion 21 is opened, and an opening piece of the opening is partially continuous with the panel portion 21.

As shown in fig. 1 to 3 and 5 to 7, the caulking portion 32 is provided on one main surface of the panel portion 21, specifically, on the outer surface of the panel portion 21. The caulking portion 32 is provided on the outer peripheral side of the panel portion 21 and on the center side of the score line 31. That is, the caulking portion 32 is provided adjacent to the scribe line 31 on the radially inner side of the scribe line 31.

The caulking portion 32 is formed in a columnar shape protruding from one main surface of the panel portion 21. The caulking portion 32 is formed by drawing a part of the panel portion 21 into a cylindrical shape. The caulking portion 32 is configured to fix the tab 12 to the panel portion 21 by caulking the tab 12 after the placement. In fig. 1 to 3 and 5 to 7, the caulking portion 32 is in a state after caulking.

As shown in fig. 5 and 7, the auxiliary score line 33 is formed in the vicinity of the caulking portion 32 of the panel portion 21. The auxiliary score line 33 is partially broken during the opening operation of the tab 12. The auxiliary score line 33 includes, for example, a main score line 41 and a sub score line 42 provided on the opposite side of the main score line 41 from the caulking portion 32 and parallel to the main score line 41.

The main score line 41 is a groove that constitutes a frangible portion that breaks a part of the panel portion 21 in the shape of an opening by an external force. The main score line 41 is, for example, a wedge-shaped groove provided on the outer surface of the panel portion 21. A part of the panel portion 21 is formed thin by the main scribe line 41. As shown in fig. 3, the main score line 41 breaks during the opening operation of the tab 12, and the caulking portion 32 can be moved upward.

The sub-score line 42 is disposed radially inward of the main score line 41. The sub scribe line 42 is formed parallel to the main scribe line 41. The sub score line 42 is, for example, a wedge-shaped groove provided on the outer surface of the panel portion 21. The sub-score line 42 is formed to be shallower than the main score line 41. That is, the thickness of the portion of the panel portion 21 where the sub-score line 42 is provided is formed to be thicker than the thickness of the portion of the panel portion 21 where the main score line 41 is provided. A part of the panel portion 21 is formed thin by the sub-score line 42.

As shown in fig. 7, the protection portion 34 is formed by folding back the panel portion 21 in a loop shape. The protection portion 34 is formed by, for example, being folded back 4 times radially inward of the outer peripheral edge of the panel portion 21 and radially outward of the caulking portion 32. That is, the protection portion 34 is formed by arranging the panel portion 21 in 5 layers. The scribe line 31 is formed in the 3 rd layer of the protection portion 34 and the panel portion 21.

The protection portion 34 is configured of an outer protection portion 34a and an inner protection portion 34b, wherein the outer protection portion 34a protects an inner peripheral edge of a portion (panel outer peripheral portion 21 a) of the panel portion 21 broken at the score line 31 that is present in the can 101 when the score line 31 is broken by opening the tab 12, and the inner protection portion 34b protects an outer peripheral edge of a portion (opening piece) of the panel portion 21 broken at the score line 31 that is separated from the can 101. The outer protection portion 34a is formed of a 3-layer panel portion 21, and is provided at the inner peripheral edge of the panel portion 21 where the folded-back portion is open. The inner protection portion 34b is constituted by the 3-layer panel portion 21, and the folded portion is present at the outer periphery of a portion apart from the opening of the panel portion 21.

In other words, as shown in fig. 7, the protection unit 34 includes: an upper layer 34c located on the outer surface side of the can lid 1 and formed of the folded back panel portions 21 of the first and second layers; a lower layer 34d located on the inner surface side of the can lid 1 and formed of the panel portions 21 of the fourth and fifth layers folded back; and an intermediate layer 34e located between the upper layer 34c and the lower layer 34d and formed of the folded back panel portion 21 of the third layer.

The outer protective portion 34a is formed of a part of the upper layer 34c and the intermediate layer 34e, and the upper layer 34c is located above the scribe line 31 and functions as a protective portion after the scribe line 31 is broken. A part of the upper layer 34c and a part of the intermediate layer 34e of the panel portion 21 constituting the outer protective portion 34a are the convex portions 21b located on the inner surface of the panel outer peripheral portion 21a on the scribe line 31 side. More specifically, the convex portion 21b of the present embodiment is constituted by the folded-back portions of the panel portions 21 of the second and third layers in the constitution of the outer protection portion 34a of the protection portion 34.

The inner protective portion 34b is formed by a part of the intermediate layer 34e and the lower layer 34d, and the lower layer 34d is located below the scribe line 31 and functions as a protective portion after the break of the scribe line 31.

The finger-inserting recess 35 is located below the rear end of the tab 12 where the finger is caught, and is recessed from the outer surface of the panel portion 21.

The groove 22 is an annular recess that is provided continuously with the outer peripheral edge of the panel 21 and protrudes toward the can body when the panel is fixed to the can body. The groove 22 has a function of improving the pressure resistance of the can lid 1.

The flange portion 23 is curled with the open end of the can 101. The flange 23 is provided with a sealing resin layer on a surface that abuts against the can 101.

As shown in fig. 1 to 3 and 5 to 7, the tab 12 includes a mounting portion 51, a distal end portion 52, and a finger hook portion 53. The tab 12 is integrally formed with a mounting portion 51, a tip portion 52, and a finger hook portion 53. The tab 12 is opened by a finger or the like caught by the finger catching portion 53, so that the tip portion 52 is pressed against a portion radially adjacent to the score line 31 of the panel portion 21 on the inner side, and the score line 31 is broken.

As shown in fig. 7, the attachment portion 51 is formed in a plate shape and has a caulking hole 51a. The attachment portion 51 is continuous with the tip portion 52 and the finger hook portion 53. The caulking hole 51a is formed so as to be insertable into an inner diameter of the caulking portion 32. The caulking portion 32 inserted into the caulking hole 51a is caulking-processed so that the mounting portion 51 is fixed to the panel portion 21 by the caulking portion 32.

The front end portion 52 is formed on the front end side of the tab 12. The tip end of the tip end portion 52 is configured to have an arc shape or a polygonal shape. The distal end portion 52 is formed by, for example, double bending an outer peripheral edge except a distal end.

The finger hook 53 is a portion for hooking a finger for lifting the tab 12 when the opening operation of the tab 12 is performed. As shown in fig. 5 and 6, for example, the finger hook 53 includes an annular hole 53a and is formed in an annular shape. As a specific example, the finger hook portion 53 is configured in a rectangular frame shape having arc-shaped corners. The finger hook 53 is formed on the opposite side of the distal end 52 with the attachment 51 interposed therebetween. When the tab 12 is attached to the panel portion 21, the rear end of the finger hook portion 53 faces the finger insertion recess 35. The finger hook portion 53 is formed by bending, for example, the outer peripheral edge and the inner peripheral edge of the annular hole 53a in a double-layered manner.

As shown in fig. 1, the can 101 is formed in a bottomed cylindrical shape. The can 101 includes a main body 111, a bottom 112, a tapered portion 113, and a fastening portion 114. The main body 111 is formed in a cylindrical shape. The bottom 112 is integrally provided at one end of the main body 111. One end (lower end) of the tapered portion 113 is integrally continuous with the other end of the main body portion 111, and the other end (upper end) is integrally continuous with the fixed portion 114. The taper 113 gradually reduces in diameter from the main body 111 side toward the fixed portion 114 side. The fastening portion 114 forms an open end of the can 101. The fastening portion 114 is fastened to the flange portion 23 by hemming.

In the tank container 100 having such a structure, the ratio of the diameter of the score line 31 of the panel portion 21 to the inner diameter of the main body portion 111 is set to 0.6 to 0.8. More preferably, the ratio of the diameter of the score line 31 of the panel portion 21 to the inner diameter of the main body portion 111 is 0.6 to 0.75. For example, the diameter of the scribe line 31 is the maximum diameter of the scribe line 31, and the inner diameter of the main body 111 is the maximum inner diameter of the main body 111. The score line 31 has a diameter equal to the inner diameter of an opening portion serving as a drinking port, which is formed in the panel portion 21 when the lid is opened.

The ratio of the inner diameter of the end (upper end) of the tapered portion 113 on the side of the fixed portion 114 to the inner diameter of the end (lower end) of the tapered portion 113 on the side of the main body portion 111 is set to 0.75 to 0.9. The inner diameter of the upper end portion of the tapered portion 113 is set larger than the diameter of the scribe line 31.

According to the tank container 100 thus configured, the score line 31 is formed on the outer peripheral side of the panel portion 21, thereby making the opening of the panel portion 21 substantially entirely open. In addition, when the content is a foamed beverage, the foam generated by the beverage and the foam generated by the beverage are moved from the tapered portion 113 having the smaller inner diameter of the can 100 to the entire opening, and thus the beverage and the foam generated by the beverage are also flown together. Accordingly, the can container 100 can have the same drinking feel as a beverage container such as a cup, a beer glass, a beer can, or the like. In addition, if the foam generated when the lid is opened is present in the tapered portion 113, the wall thickness of the foam can be increased, so that the flowing foam is increased, and the beverage container can further have the same drinking feeling as the beverage container.

In the tank container 100, the panel portion 21 has a panel outer peripheral portion 21a inclined in the radial direction from the outside toward the inside toward the outside in the axial direction. Therefore, the content can be concentrated toward the center of the can container 100 when the lid is opened and when the content (foamed beverage) flows during drinking. Thus, the foamed beverage is easily foamed, and foamability of the can container 100 can be obtained. Here, foamability refers to a function or performance of foaming a foamed beverage at the time of opening the lid or at the time of flowing the foamed beverage, due to the can container 100.

The ratio of the diameter of the score line 31 of the panel 21 to the inner diameter of the main body 111 of the can 100 is set to 0.6 to 0.8, and more preferably the ratio of the diameter of the score line 31 of the panel 21 to the inner diameter of the main body 111 is set to 0.6 to 0.75. By setting the ratio of the diameter of the score line 31 of the panel 21 to the inner diameter of the main body 111 in this manner, the can 100 can concentrate the contents more toward the center of the container when the lid is opened and when the beverage is consumed, and foaming of the contents is likely to occur. Thus, the tank container 100 has high foamability. In particular, foam is mainly generated at the inner surface of the main body portion 111. The bubbles generated on the inner surface of the main body 111 interfere with each other in the process of flowing to the opening divided by the score line 31 having a smaller diameter than the main body 111. As a result, foaming of the content is more likely to occur.

The inner diameter ratio of the upper end portion to the lower end portion of the tapered portion 113 of the tank container 100 is set to 0.75 to 0.9. By setting the inner diameter ratio of the upper end portion to the lower end portion of the tapered portion 113 in this manner, the can container 100 can concentrate the content more toward the center of the container when the lid is opened or when the user drinks, and foaming of the content is likely to occur. Thus, the tank container 100 has high foamability.

Further, the can container 100 has the convex portion 21b on the inner surface side of the panel outer peripheral portion 21a of the panel portion 21, so that the content flowing to the opening portion collides with the convex portion 21b, and the content can be more foamed. The convex portion 21b can improve foamability of the tank container 100, and thus the tank container 100 has high foamability.

As an example of the size of the can container 100, the can container 100 is set such that the score line 31 of the panel portion 21 of the can lid 1 has a diameter of 44mm, the main body portion 111 of the can body 101 has an inner diameter of 65.9mm, the upper end of the tapered portion 113 has an inner diameter of 54.9mm, and the lower end of the tapered portion 113 has an inner diameter of 65.9mm which is the same as the inner diameter of the main body portion 111. In addition, the beer is filled in the can container 100 of this embodiment, and the beer is well foamed when the lid is opened, and the beverage feeling is also good.

As described above, according to the can container 100 of the present embodiment, the user can drink the beverage in a sense of drinking the beverage container, and foamability of the filled and foamed beverage can be obtained.

The present invention is not limited to the above embodiment. For example, in the above-described example, the convex portion 21b provided on the inner surface side of the panel outer peripheral portion 21a of the panel portion 21 is formed by a part of the intermediate layer 34e constituting the outer protection portion 34a, but the present invention is not limited thereto. For example, a groove may be formed in a portion of the panel outer peripheral portion 21a adjacent to the scribe line 31, and the convex portion 21b may be formed by the groove.

The tank container 100 is not limited to the above-described configuration and use. For example, the tank container 100 may be configured to contain a so-called surge foaming member for foaming the filled foamed beverage together with the content. For example, a foaming member for foaming a foaming beverage is formed of a resin material such as a sphere or a column, and is accommodated in the tank container 100. The tank container 100 may be foamed by an ultrasonic foamer or the like before or after the opening of the lid. In this way, even when a frothed beverage is frothed by a frothing member, a frother, or the like, by using the tank container 100 of the present embodiment having foamability, it is possible to suppress the disappearance of the froth and to obtain the same drinking sensation as that of the beverage container.

In the above example, the foaming beverage is exemplified as the content filled in the can container 100, but the foaming beverage is not limited to the above. That is, the can container 100 functions as foamability of the foamed beverage by filling the foamed beverage, but of course, beverages other than the foamed beverage may be filled.

The present invention is not limited to the above-described embodiments, and various modifications can be made in the implementation stage without departing from the gist thereof. In addition, the embodiments may be appropriately combined and implemented, and in this case, the combined effect can be obtained. The above-described embodiments include various inventions, and various inventions can be extracted from combinations selected from a plurality of constituent elements disclosed. For example, when the problem can be solved and the effect can be obtained even if several constituent elements are deleted from all the constituent elements shown in the embodiment, the constituent elements from which the constituent elements are deleted can be extracted as the invention.

Description of the reference numerals

1 … can lid, 11 … can lid body, 12 … tab (can lid tab), 21 … panel portion, 21a … panel outer peripheral portion, 21b … tab, 22 … slot portion, 23 … flange portion, 31 … score line, 32 … clinch portion, 33 … auxiliary score line, 34 … protective portion, 34a … outer protective portion, 34b … inner protective portion, 34c … upper layer, 34d … lower layer, 34e … middle layer, 35 … finger placement recess, 36 … display portion, 41 … main score line, 42 … auxiliary score line, 51 … attachment portion, 51a … clinch hole, 52 … front end portion, 53 … finger hook portion, 53a … annular hole, 100 … can container, 100a … bead portion, 101 … can body, 111 … body portion, 112 … bottom portion, 113 … cone portion, 114 … securing portion.

Claims

1. A can container, comprising:

a can lid having: a circular panel part, on the outer periphery of which a circular dividing line is formed for dividing the area forming the drinking opening; a groove portion connected to an outer peripheral edge of the panel portion and recessed from the panel portion; a caulking portion provided in the panel portion and radially abutting the inner side of the score line; a pull ring fixedly connected to the rivet joint for opening operation; and a flange portion connected to the groove portion; the panel portion includes a panel outer peripheral portion inclined toward a radial inner side toward an axial outer side at a position between the score line and the groove portion; and

a tank body having a cylindrical main body portion, a fastening portion fastened to the flange portion, and a tapered portion provided between the main body portion and the fastening portion and having a diameter reduced from the main body portion toward the fastening portion; the tank is filled with foamable content, and the internal pressure becomes positive;

the ratio of the diameter of the score line to the inner diameter of the main body is 0.6-0.8.

2. The tank container of claim 1 wherein,

the ratio of the inner diameter of the end of the taper portion on the fixed portion side to the inner diameter of the main body portion side is set to 0.75 to 0.9.

3. Tank container according to claim 1 or 2, characterized in that,

the can lid has a convex portion on the can body side on the score line side provided on the outer peripheral portion of the panel.