JP2011189935A - Beverage can and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beverage can capable of enhancing the transport efficiency when transporting the beverage can. <P>SOLUTION: The side part of a base body 21 is tapered, and the diameter of the base body 21 is gradually increased toward a side with an opening being formed therein. More specifically, the diameter of the opening on one end of the base body 21 is smaller than the diameter of the opening formed on the other end side of the base body 21. Thus, a first base body 21 is inserted inside another base body 21 located below the first base body 21. As a result, the conveying efficiency when conveying the base body 21 can be enhanced. Additionally, when the base body 21 is employed, an increased number of base bodies can be conveyed compared with base bodies having substantially the same diameter in a height direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a beverage can and a method for producing a beverage can.

  The can body portion filled with the beverage includes, for example, a cup forming process for punching a metal plate into a cup shape, a body forming process for forming a bottomed cylindrical body by drawing and ironing, and an upper edge of the cylindrical body. It is formed by a trimming step for trimming and a neck flange step for reducing the diameter near the upper end of the cylindrical body and forming a flange portion (see, for example, Patent Document 1).

JP 2003-95231 A

  Here, many beverage cans filled with beverages are produced by a production process for producing a can (beverage can) and a filling step for filling the can with a beverage. Here, generally, manufacture of a can is performed by the manufacturer of a container. The manufactured can is transported to a beverage maker, and the beverage maker fills the beverage. By the way, when transporting cans, if the cans are simply stacked, the volume of the cans per unit volume becomes extremely small, and transport efficiency deteriorates.

  A beverage can to which the present invention is applied includes a cylindrical part having one end opened and having an opening at one end, and a closing part formed integrally with the cylindrical part and closing the other end of the cylindrical part, A beverage can characterized in that the diameter of the other end of the tubular portion is smaller than the diameter of the opening of the tubular portion.

  Here, the closing part is provided with an opening region that is opened when the drinking mouth is formed, and a tab that presses the opening region when the user operates and forms an opening in the opening region. Can be characterized. Further, a mark is attached to the outer peripheral surface of the cylindrical portion, and the mark and the opening region are arranged in a state having a predetermined positional relationship determined in advance. Further, a mark is attached to the outer peripheral surface of the cylindrical portion, and a first region having a predetermined coefficient of friction is disposed on the outer peripheral surface and has a predetermined positional relationship with the mark. And a second region having a predetermined positional relationship and having a friction coefficient different from that of the first region. Further, the first region and the second region can be characterized in that they are arranged at different positions in the circumferential direction of the cylindrical portion. Further, the second region is formed so as to have a friction coefficient smaller than that of the first region, and is arranged so as to face a direction substantially perpendicular to the direction in which the mark faces. Can be a feature.

  Further, when the present invention is regarded as a method for manufacturing a beverage can, the method for manufacturing a beverage can to which the present invention is applied has a cylindrical shape in which an opening is formed at one end and the other end is closed from a plate-like member. A beverage can manufacturing method comprising: a substrate forming step of forming a substrate; and a deformation step of deforming the substrate such that the diameter of the opening is larger than the diameter of the other end of the substrate.

  Here, with respect to the plate-like member, an opening area forming step for forming an opening area that is opened when a drinking mouth is formed, and the opening area is pressed by the user to form an opening in the opening area. A tab attachment step of attaching the tab to the plate-like member. Also, a printing step for printing the mark on the outer peripheral surface of the substrate, and a first portion having a predetermined positional relationship with a portion where the mark is printed and having a first friction coefficient on the outer peripheral surface of the substrate. A first region forming step for forming a region, and a second region having a second friction coefficient on the outer peripheral surface of the substrate, the portion having a predetermined positional relationship with a portion where the mark is printed And a second region forming step.

  The transport efficiency when stacking and transporting beverage cans can be increased as compared with the case where the present invention is not adopted.

It is the figure which showed the container which concerns on embodiment of this invention. It is the figure which showed the state of the container at the time of an internal drink being drunk. It is a figure for demonstrating the manufacturing process of a container. It is the figure which showed the state at the time of conveyance of a base | substrate. It is the figure which showed the container in 2nd Embodiment. It is the figure which showed the manufacturing process of the container shown in FIG. It is the figure which showed the state at the time of conveyance of a base | substrate. It is the figure which showed schematic structure and the container of the display apparatus which concern on embodiment of this invention. It is a top view of a display device. It is a figure for demonstrating the surface state of a container. It is a figure for demonstrating operation | movement of the container in a display apparatus. It is the figure which showed the printing machine which performs printing with respect to a container. It is the figure which showed the process with respect to a base | substrate. It is the figure which showed the mounting process of the mounting member. It is the figure which showed the removal process of the mounting member. It is the figure which showed the package of the container. It is the figure which showed the package of the container. It is a figure for demonstrating rotation of a base | substrate. It is a figure for demonstrating rotation / rotation stop of a base | substrate.

-First embodiment-
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a view showing a container according to an embodiment of the present invention. In addition, in this figure, what is called a 2 piece can is illustrated. FIG. 1A shows a front view, and FIG. 1B shows a top view.

As shown in FIG. 1A, the container 20 in the present embodiment is composed of a base body 21 filled with a beverage and a lid member 22 attached to the lower part of the base body 21.
The base body 21 as an example of a beverage can has a cylindrical side portion 211 (an example of a cylindrical portion) that is tapered and increases in diameter as it goes downward, and is formed integrally with the side portion 211 and It has an upper part 212 (see also FIG. 1B) formed in a disk shape. Here, the upper portion 212 can be regarded as a closed portion that closes one end of the side portion 211 that functions as a cylindrical portion. On the other hand, the lid member 22 is formed in a disk shape. Moreover, the outer peripheral edge of the lid member 22 is fixed to the lower edge portion of the side portion 211 by so-called winding. Thereby, the opening formed in the edge part of the base | substrate 21 is block | closed.

  Here, the upper portion 212 of the base body 21 has a circular (disc-like) base 41 and an opening in a planned opening region 44 described later, which is operated by the user when a drinking mouth is formed, as shown in FIG. And an opening tab 42 to be formed. Here, the opening tab 42 is arranged so as to have a predetermined positional relationship with the planned opening area 44. In addition, the base 41 is formed with a planned opening area (opening area) 44 that is opened when a drinking mouth is formed at a position shifted from the center (an eccentric position). The base 41 is formed with a score (scheduled fracture line) 41 a surrounding the planned opening area 44.

  The opening tab 42 is attached to one surface of the base 41. Further, the opening tab 42 is provided along the one surface of the base 41, and the ring hole 42c penetrates from the facing surface facing the base 41 toward the surface opposite to the facing surface. have. Further, the opening tab 42 is provided from the center of the base 41 to the base 41 toward the outer peripheral edge. The opening tab 42 is a rigid plate-like member, and is fixed to the base 41 by a rivet 43 provided at the center of the base 41. That is, the opening tab 42 includes a fixing portion 42 a that is fixed to the base portion 41 via the rivet 43. Further, the opening tab 42 includes a ring portion 42b extending along the base portion 41 from the fixing portion 42a.

  Here, the fixing portion 42 a is disposed so as to overlap the planned opening region 44. The ring portion 42b extends in a direction away from the score 41a. In the present embodiment, the ring portion 42b is provided on one side of the container 20 with respect to the location where the rivet 43 is provided, and the planned opening area 44 is the other side of the container 20 with respect to the location where the rivet 43 is provided. On the side. More specifically, the opening tab 42 and the scheduled opening area 44 are arranged on the same line.

  The ring portion 42b is an annular knob portion having a ring hole 42c. Then, when the finger is placed on the tip of the ring part 42b and pulled up, the tip of the fixed part 42a moves downward with the rivet 43 as a fulcrum. Thereby, the score 41a is broken by the so-called lever principle. As a result, the planned opening area 44 is opened, and the beverage as the contents can be poured out.

  Moreover, in the container 20 in this embodiment, the design including a character, a figure, etc. is printed on the side part 211 of the base 21. The symbol includes a first identification mark 23a and a second identification mark 23b for distinguishing from other products such as a product name and a trade name (in the present specification, hereinafter, simply referred to as "identification mark 23"). "). Here, as shown in FIG. 1B, the first identification mark 23a and the second identification mark 23b are arranged with a phase shifted by 180 ° in the circumferential direction of the container 20. It should be noted that the first identification mark 23a and the second identification mark 23b can be the same or different.

Next, the relationship between the planned opening area 44 and the identification mark 23 will be described.
In the container 20 according to the present embodiment, the identification mark 23 and the planned opening area 44 are arranged with a predetermined positional relationship. In addition, in the present embodiment, the printing position of the identification mark 23 is controlled so that the identification mark 23 and the planned opening area 44 have a predetermined positional relationship.

  More specifically, in the present embodiment, after the planned opening area 44 is formed on the base body 21, a pattern including the identification mark 23 is printed on the side portion 211 of the base body 21 by a printing machine described later. Is called. Here, in the present embodiment, the base body 21 is rotated in the circumferential direction when the design is printed. As shown in FIG. 18 (a diagram for explaining the rotation of the base body 21), the base body 21 can be rotated, for example, by pressing the opening tab 42 from the side with a circularly moving pin PN. . In the embodiment shown in FIG. 18, the base 21 is transported by the transport conveyor 810 in a state where the base 21 is accommodated in a recess 820 formed in the transport conveyor 810. In the present embodiment, the pin PN moves while accompanying the base 21, and the base 21 is rotated by the pin PN. Thereafter, the sensor detects a planned opening area 44 (which may be the opening tab 42 or the like) and stops the rotation of the base 21 based on the detection result (when the pin PN is used, the movement of the pin PN is stopped). ), The base body 21 is set in a predetermined posture. Thereafter, the design including the identification mark 23 is printed on the side portion 211 of the base 21. As a result, the identification mark 23 and the scheduled opening area 44 are arranged with a predetermined positional relationship.

  The above rotation and stop of the rotation of the base 21 are performed by rotating the base 21 in the circumferential direction and opening the tab 42 as shown in FIG. 19 (a diagram for explaining the rotation / rotation stop of the base 21). The pin PN protrudes on the movement path of the opening, and the movement of the opening tab 42 is regulated using the pin PN. More specifically, in the embodiment shown in FIG. 19, when the base body 21 located in the recess 820 reaches the position opposite to the drag application member 865, the transfer conveyor 810 is inclined, and thus the drag application member 865. Slid toward the surface and contact the drag application member 865 as indicated by reference numeral 8A. Thereby, the base 21 rotates in the counterclockwise direction (circumferential direction). On the other hand, the solenoid S is turned off. Thereby, as shown to the code | symbol 8A of FIG. 19, the pin PN of the rotating member 864A moves toward the conveyance conveyor 810. FIG. Next, the motor M is driven and the pin PN is lowered. As a result, the pin PN is positioned at a predetermined position on the moving path of the opening tab 42. Thereafter, as shown by reference numeral 8B in FIG. 19, the opening tab 42 contacts the pin PN, and the rotation of the base 21 is stopped. Here, the rotating member 864A, the pin PN, the motor M, the solenoid S, and the like are attached to a belt member 860 that circulates.

The positional relationship between the identification mark 23 and the planned opening area 44 will be further described. In the present embodiment, the identification mark 23 and the planned opening area 44 are arranged with a phase shifted by 90 ° in the circumferential direction of the container 20. ing.
Further description will be made with reference to FIG. 1B. When the first identification mark 23a faces one direction (downward in the figure), the planned opening area 44 is perpendicular to the one direction (left in the figure). The planned opening region 44 and the first identification mark 23a are arranged so as to be arranged along the direction). When the second identification mark 23b faces one direction (upward in the figure), the planned opening area 44 is arranged in a state along the direction (left direction in the figure) perpendicular to the one direction. The planned opening area 44 and the second identification mark 23b are arranged.

  More specifically, when the axis of the container 20 is used as a reference, the planned opening region 44 is arranged along one direction from the axis toward the side portion 211. On the other hand, the first identification mark 23a and the second identification mark 23b are arranged so as to face a direction orthogonal to the one direction. More specifically, the planned opening area 44 is arranged on a straight line from the axis of the container 20 toward the side portion 211, and the first identification mark 23a and the second identification mark 23b are straight lines orthogonal to the straight line. It is arranged on a straight line passing through 20 axes. In other words, the first identification mark 23 a and the second identification mark 23 b are arranged so as to face the direction orthogonal to the virtual line when assuming a virtual line passing through the center of the upper portion 212 and the planned opening area 44. 211.

Here, FIG. 2 is a diagram showing a state of the container 20 when the internal beverage is drunk.
In the container 20 according to the present embodiment, the identification mark 23 and the planned opening area 44 are arranged with the above positional relationship. For this reason, an opening is formed in the planned opening area 44, and when the beverage is drunk through this opening (drinking mouth), the second identification mark 23b is directed to the side as shown in FIG. Although not shown, the first identification mark 23a also faces sideways.

  Here, the promotion of products such as beverages is generally carried out by television commercials or the like, but the advertising effect is also achieved by placing the identification mark 23 at a position visible to a third party when the beverage is drunk. Can occur. In the container 20 in the present embodiment, when the beverage is drunk, the identification mark 23 faces sideward as described above, and the identification mark 23 is arranged at a position where the third person can recognize. For this reason, the advertising effect can be produced. In other words, since the identification mark 23 is not located on the drinker side, and the identification mark 23 is located at a position recognizable by a third party, it is possible to produce an advertising effect.

  In the above description, the case where the identification mark 23 faces to the side has been described as an example. However, when a beverage is drunk, the advertisement as described above may be used even if the identification mark 23 faces the side opposite to the drinker side. An effect can be produced. That is, even if the identification mark 23 is attached to the side opposite to the scheduled opening area 44, that is, the ring portion 42b side, it is possible to produce an advertising effect. In other words, even if the identification mark 23 is attached to the side opposite to the side where the planned opening area 44 is arranged eccentrically, it is possible to produce an advertising effect. Further, when it is desired to show the identification mark 23 to the person who drinks the drink, the identification mark 23 can be attached to both the planned opening area 44 side and the opposite side.

  Here, the container 20 is generally often held by the right hand. This is because there are generally more right-handed than left-handed. As a result, even if the identification mark 23 faces sideways, the identification mark 23 attached to the place held by the right hand may be hidden by the right hand. For this reason, it is more preferable that the identification mark 23 in the container 20 is provided at a position that is not hidden even if it is held by the right hand. More specifically, it is preferably provided at the position of the second identification mark 23b in FIG. In this case, even if the container 20 is held by the right hand, the identification mark 23 is exposed to the outside without being hidden by the right hand.

Next, the manufacturing process of the container 20 will be described.
FIG. 3 is a diagram for explaining a manufacturing process of the container 20.
In the manufacturing process of the container 20 in this embodiment, first, an aluminum plate is punched to form a disk-shaped member as shown in FIG. Thereafter, the disk-shaped member is subjected to press working or the like, and the above-described score 41a, planned opening area 44, etc. are formed on the disk-shaped member as shown in FIG. Further, rivet processing is performed, and the opening tab 42 manufactured in a separate process is attached to the disk-shaped member as shown in FIG.

  Thereafter, the disk-shaped member is deep-drawn to form a cup-shaped member (an example of a base body) as shown in FIG. Thereafter, the cup-shaped member is subjected to processing (deformation processing) for deforming the cup-shaped member, such as drawing and ironing. Thereafter, a trimmer process for cutting the edge of the cup-shaped member is performed. As a result, as shown in FIG. 4D, a cylindrical member having a lower end diameter larger than the upper end diameter is completed. Then, the lubricating oil and the like are removed in a cleaning process (not shown). Then, a design is printed on the outer surface of a cylindrical member using a printing machine. That is, a printing process is provided in the manufacturing process in the present embodiment, and in this printing process, a pattern is printed on the outer surface of the cylindrical member. Thereby, the base body 21 described above is completed (see FIG. 3D).

  Next, the base 21 is turned upside down, and a beverage is filled from an opening located on one side of the base 21 (see FIG. 5E). Thereafter, as shown in FIG. 5F, the lid member 22 is placed on the opening side of the base body 21, and then the lid member 22 is fixed to the base body 21 by so-called winding. Thereby, the container 20 shown in FIG. 1 is completed. The steps (A) to (D) are generally carried out by a container manufacturer. And the base | substrate 21 completed by completion | finish of a process (D) is conveyed (transported) to a drink maker, and the said process (E) and (F) is implemented in a drink maker.

  Here, FIG. 4 is a view showing a state when the substrate 21 is conveyed. In the present embodiment, as described above, the side portion 211 (see FIG. 1) of the base 21 is tapered, and the diameter of the base 21 gradually increases toward the lower side (the side where the opening is formed). ing. More specifically, in this embodiment, the diameter at the other end of the base 21 is smaller than the diameter of the opening formed at the one end of the base 21. For this reason, as shown in FIG. 4, one base 21 in the present embodiment can enter the inside of another base 21 located below the one base 21. As a result, when the base body 21 in the present embodiment is employed, it is possible to increase the conveyance efficiency during conveyance. In addition, when the base body 21 in the present embodiment is employed, a larger number can be carried than the base bodies 21 whose diameters are substantially equal in the height direction. As shown in the figure, a protective cap HC can be attached to the base body 21 located at the lowermost part of the plurality of stacked base bodies 21.

  In addition, when the manufacturing method in this embodiment is employ | adopted, the container 20 in which a gravity center position is located in the lower part side of the container 20 can be manufactured. In addition, when the container 20 is placed in a normal state (when the container 20 is placed in a state where the planned opening region 44 is located at the upper part of the container 20), the container 20 whose center of gravity is located on the lower side is disposed. Manufacturable. And such a container 20 becomes difficult to fall compared with the case where a gravity center position is located in the upper part of the container 20. FIG.

  Here, the process performed on the beverage manufacturer side will be described in detail. In the beverage manufacturer, first, the base 21 that has been transported in a stacked state is subjected to a process of separating the bases 21 into individual bases 21. This process is performed by, for example, the apparatus shown in FIG. This apparatus is provided with a transport device 600 that is positioned above the base 21 and transports while sucking the base 21, and a stopper 610 that is positioned on the side of the base 21 and suppresses the movement of the base 21 located below the base 21 to be sucked. I have. The stopper 610 is composed of two movable pieces 611 provided so as to be movable in a direction approaching and separating from the base 21, and contacts the end of the base 21 to suppress the movement of the base 21. It is also possible to provide a holding piece 620 that is provided so as to be movable in the direction approaching and leaving the base 21 and presses the side portion of the base 21.

  In the beverage manufacturer, an attachment member that functions as a cap can be attached to each of the bases 21. More specifically, as shown in FIG. 14 (a diagram showing the mounting process of the mounting member), the mounting member 630 can be mounted on the side of the base 21 on which the drinking mouth is formed. When the mounting member 630 is mounted in this way, contamination around the drinking mouth of the base 21 is prevented. Note that the mounting member 630 can be mounted by, for example, the mounting device 640 shown in FIG. The mounting device 640 includes, for example, a first conveyor 641 that transports the base body 21, a transport apparatus 642 that lifts and transports the base body 21 that has been transported by the first conveyor 641, and a base body 21 that is lifted by the transport apparatus 642. The mounting device 643 for mounting the mounting member 630 and the second conveyor 644 for transporting the base 21 on which the mounting member 630 has been mounted can be configured.

  In addition, after the filling of the beverage to the base 21 and the attachment of the lid member 22 are finished, the mounting member 630 is removed by the removing device 650 with the base 21 as shown in FIG. 15 (a diagram showing the mounting member removal process). Removed from. The detaching device 650 includes an inverting device 651 for inverting the container 20 (base 21) upside down and a detaching device 652 for removing the mounting member 630 from the container 20 inverted by the inverting device 651, as shown in FIG. Yes. Here, the removal device 652 is mounted using a first suction unit 652A that is disposed inside the transport belt 654 and sucks the container 20 from the inside of the transport belt 654, and a second suction unit 652B that sucks the mounting member 630. The member 630 is removed. The mounting member 630 removed by the removing device 652 is transported to the mounting device 640 (see FIG. 14) by a transport device (not shown). Then, it is mounted on a new base 21 by the mounting device 640.

  In addition, the container 20 filled with the beverage and attached with the lid member 22 is a packing material such as a paper pack or a transparent film, as shown in FIGS. 16A and 16B (a diagram showing the packaging body of the container). It is packed from 710 and shipped in a package 700. 16A is a front view of the package 700, and FIG. 16B is a cross-sectional view of the package 700 viewed from above. Here, as shown in FIG. 16B, the container 20 can be inverted every other (every other can). In this case, the volume of the package 700 can be reduced as compared with the case where the top and bottom are not reversed. Moreover, the container 20 can also be arrange | positioned so that the identification mark 23 may face the outer side of the packaging material 710, as shown to FIG. 16 (A). In this case, an advertising effect is produced. In order to make the identification mark 23 face the outside of the packaging material 710, it is necessary to rotate the container 20 in the circumferential direction to align the direction of the identification mark 23. This alignment is different in the friction coefficient of the container 20. A plurality of regions can be formed (described later), and a function similar to the function provided to the display device 30 described later can be provided in the transport path of the container 20.

  When the base 21 is tapered, a dead space is likely to be generated inside the packing material 710. And if a dead space arises in this way, it will become easy to shake the container 20 during conveyance. For this reason, as shown in FIGS. 16A and 16B, it is desirable to form a folded portion 760 in which the packing material 710 is folded. In addition, although the aspect which reversed the top and bottom of the container 20 every 6 can packs and every other was demonstrated above, as shown to (A) of FIG. 17 (the figure which showed the packaging body of the container), 7 cans are shown. You may put it all together. Here, in FIG. 17A, one container 20 is arranged at the center, and six containers 20 are arranged around the container 20. In FIG. 17A, the top and bottom of the container 20 located at the center is reversed. Further, as shown in FIG. 17B, the top and bottom of the two containers 20 that are located far from the center and are in the farthest relationship can be reversed. In FIG. 17, the packaging material 710 is not shown.

-Second Embodiment-
FIG. 5 is a view showing the container 20 in the second embodiment. In addition, also in this figure, what is called a two-piece can is illustrated. FIG. 1A shows a front view, and FIG. 1B shows a top view. In the first embodiment, the container 20 (base 21) whose lower side diameter is larger than the upper side diameter has been described. However, as shown in FIG. 5, the lower side diameter is set higher than the upper side diameter. Can also be reduced.

  More specifically, the base 21 of the container 20 in the present embodiment includes a side portion 215 that is tapered and gradually increases in diameter as it goes upward, a circular bottom portion 216 in front view, and a side portion 215 and a bottom portion. And a neck portion 218 that is connected to the upper end of the side portion 215 and decreases in diameter as it goes upward. Here, the side portion 215, the bottom portion 216, the reduced diameter portion 217, and the neck portion 218 are integrally formed.

  On the other hand, the lid member 22 is formed in a disk shape, and the outer peripheral edge is fixed to the base body 21 by so-called winding. Note that, unlike the first embodiment, the lid member 22 in this embodiment is fixed to the upper portion of the base 21. In addition, the base body 21 in the present embodiment has an opening at the top thereof, and the lid member 22 is fixed to the base body 21 so as to close the opening at the top. Here, the lid member 22 has a configuration similar to that of the upper portion 212 (see FIG. 1B) of the first embodiment, and as shown in FIG. 5B, a circular (disk-shaped) base portion. 41, a tab 42 for opening, a planned opening area (opening area) 44, a score (scheduled break line) 41a, and the like.

  The relationship between the planned opening area 44 and the identification mark 23 is the same as in the first embodiment. In this embodiment, in order to make the planned opening region 44 and the identification mark 23 have a predetermined positional relationship, when the lid member 22 is attached to the base body 21, for example, the identification mark 23 of the base body 21 is It detects and grasps the posture (rotation angle) of the base 21. Thereafter, the lid member 22 is rotated in the circumferential direction by an angle corresponding to the posture (rotation angle) of the base body 21. As a result, the scheduled opening area 44 and the identification mark 23 have the predetermined positional relationship. Thereafter, the lid member 22 is fixed to the base 21.

FIG. 6 is a view showing a manufacturing process of the container 20 shown in FIG.
When manufacturing the container 20 in the present embodiment, first, a punching process is performed on an aluminum plate and a deep drawing process is performed to form a cup-shaped member as shown in FIG. Thereafter, redrawing processing, ironing processing, top edge removal processing (trimming), and the like are performed to form a cylindrical member having a diameter that gradually increases toward the top (opening) as shown in FIG. In this step, the bottom is punched as necessary to make the shape of the bottom dome (not shown). When this punching is performed, the reduced diameter portion 217 is also formed.

  Thereafter, after a cleaning process (not shown), the design including the identification mark 23 is printed in the printing process (see FIG. 3C). In this printing step, a printing machine described later can be used. Thereafter, the opening side of the cylindrical member is pressed against the mold, and neck processing and flange processing are performed. Thereby, the base body 21 in which the neck portion 218 is formed is completed (see FIG. 4D). Then, this base | substrate 21 is conveyed, for example to a drink maker. In the beverage manufacturer, the beverage is filled as shown in FIG. Further, as shown in FIG. 5F, the lid member 22 is fixed to the base body 21 by winding. Thereby, the container 20 demonstrated in FIG. 5 is completed.

  FIG. 7 is a diagram illustrating a state when the base 21 is being transported. In the base body 21 in the present embodiment, the diameter on the lower side is smaller than the diameter on the upper side where the opening is formed. In addition, the base 21 has a lowermost diameter smaller than the diameter of the opening. Therefore, as shown in FIG. 7, the bottom side of another base 21 can be inserted into the opening of one base 21, and the bases 21 can be stacked. As a result, the transport efficiency of the base body 21 can be increased also in this embodiment.

  By the way, in a convenience store or the like, if the identification mark 23 attached to the container 20 is not oriented in the purchase direction of the purchaser, it is difficult to identify the product and the appearance of the product is deteriorated. For this reason, in a convenience store or the like, it is preferable that the identification mark 23 of the container 20 is oriented in a specific direction such as the front side. Here, when the display device installed in a convenience store or the like is configured as follows, and the surface state of the container 20 described above is set as described below, the identification mark 23 is directed in a specific direction. It becomes possible.

  FIG. 8 is a diagram showing a schematic configuration and a container of the display device according to the embodiment of the present invention. In the following description, the container 20 described with reference to FIG. 1 will be described as an example, but the functions described below can also be imparted to the container 20 illustrated in FIG.

  As shown in FIG. 8A, the display device 30 in the present embodiment forms a placement portion 31 on which the container 20 described in FIG. And a guide 32 for guiding the movement. Moreover, it arrange | positions along the one side of the mounting part 31, and is provided with the control board 34 which stops the movement of the container 20. As shown in FIG. Here, the regulation plate 34 is preferably formed to be transparent.

  Here, the display device 30 is housed in a display case 10 installed in a convenience store, a supermarket, or the like, as shown in FIG. The display case 10 has a main part composed of a case main body 10A formed in a rectangular parallelepiped shape and a door 10B provided to be openable and closable with respect to the case main body 10A. Here, the display device 30 is placed on a shelf (not shown) provided in the display case 10. At this time, the display device 30 is installed such that the side on which the restriction plate 34 is provided is positioned on the door 10B side. The placement portion 31 is arranged such that the side on which the regulation plate 34 is provided is positioned below the side opposite to the side on which the regulation plate 34 is provided. That is, the placement unit 31 is disposed in a state of being inclined downward from the rear side of the display case 10 toward the front side (extraction unit side) from which the container 20 is taken out.

  Here, the display case 10 in the present embodiment is provided with a door on the rear side (not shown), and the rear side can also be opened. And the container 20 is thrown into the display apparatus 30 from this back side. In other words, the container 20 is provided on the rear side of the display case 10 and the rear side of the display device 30. And the thrown container 20 moves on the mounting part 31 toward the door 10B side. In this specification, the door 10B side may be referred to as the front side (front), and the side opposite to the door 10B may be referred to as the rear side (rear). In addition, the width direction of the display case 10 (the direction orthogonal to the direction in which the container 20 moves) may be referred to as a horizontal direction or a width direction.

The display device 30 will be further described.
FIG. 9 is a top view of the display device 30.
The guide 32 of the display device 30 in the present embodiment is disposed along the movement path of the container 20. The guides 32 are provided on both sides of the movement path of the container 20. Here, the guide 32 is formed of a metal material such as aluminum or a resin material, for example.

  The placement unit 31 is disposed to be inclined in the width direction. More specifically, one guide 32 (left guide 32 in the figure) side is inclined and disposed so as to be positioned below the other guide 32 (right guide 32 in the figure) side. . Moreover, the mounting part 31 is inclined and disposed so that the front side is positioned below the rear side as described above. Here, reference numerals 2 </ b> A and 2 </ b> B in FIG. In the present specification, hereinafter, the left guide 32 may be referred to as a left side guide 32 and the right guide 32 may be referred to as a right side guide 32.

  Further, the placement unit 31 includes a first roller group 311, a second roller group 312, and a third roller group 313 arranged in parallel in the width direction of the placement unit 31 on the surface on which the container 20 is placed. . Here, each roller group has a plurality of roll-shaped members 314 that can rotate along the moving direction of the container 20 and are arranged in the front-rear direction. Furthermore, in the present embodiment, the left side guide 32 is provided with a resistance applying portion 33 that applies sliding resistance (friction resistance) to the container 20 that is in contact therewith. 9A illustrates a case where the resistance applying portion 33 is provided over the entire length of the left side guide 32, and FIG. 9B illustrates a case where the resistance applying portion is provided on a part of the left side guide 32. The case where 33 is provided is illustrated.

  The resistance applying portion 33 preferably has a circular cross section. This is because even if the container 20 is tilted in the front-rear direction or the left-right direction, the contact area between the resistance applying portion 33 and the container 20 is difficult to change. Moreover, the resistance provision part 33 can be comprised also with the vinyl tape comprised by the vinyl chloride etc. which are affixed on the rod-shaped member with a circular cross section, for example. The resistance applying portion 33 can also be configured by a rubber member such as EPDM (ethylene-propylene rubber). Further, the resistance applying portion 33 can be formed of a resin material.

Next, the container 20 will be described in detail.
FIG. 10 is a view for explaining the surface state of the container 20.
FIG. 10A illustrates the container 20 from one side, and FIG. 10B illustrates the container 20 from the other side. 3C shows a cross section at the S portion in FIG. 1A, and FIG. 1D shows a cross section at the T portion in FIG. In FIG. 10, illustration of the planned opening area 44, the opening tab 42, and the like provided in the upper portion 212 (see FIG. 1B) is omitted.

  In the container 20 in the present embodiment, as shown in FIG. 10, as described above, a design including characters, graphics, and the like is printed on the side portion 211 of the base 21. The design includes a first identification mark 23a and a second identification mark 23b for identifying the product name, trade name, and other products. Here, the first identification mark 23 a and the second identification mark 23 b are arranged with a phase shifted by 180 ° in the circumferential direction of the container 20.

  Moreover, the container 20 has 1st area | region R1-4th area | region R4 in the outer peripheral surface of the base | substrate 21 (side part 211), as shown to the same figure (A) and (B). Here, these regions are provided in the order of the first region R1, the second region R2, the third region R3, and the fourth region R4 in the circumferential direction of the container 20. In addition, the surface state of 1st area | region R1 and the surface state of 3rd area | region R3 are comprised similarly. Moreover, the surface state of 2nd area | region R2 and the surface state of 4th area | region R4 are comprised similarly. For this reason, in the following description, it demonstrates focusing on 1st area | region R1 and 2nd area | region R2. Furthermore, in the present embodiment, the friction coefficient on the surface satisfies the first region R1 (third region R3)> the second region R2 (fourth region R4).

Here, the surface state of the second region R2 will be described first with reference to FIG.
As shown in FIG. 2C, in the second region R2, an ink layer 51 is provided on the surface of an aluminum substrate 50 constituting the base 21. In addition, a top coat layer (outermost layer) 52 having crater-like irregularities is provided on the surface of the ink layer 51.

  Here, as the ink used for the ink layer 51, for example, one for metal printing can be used. Here, as the pigment (color amount) of the ink, various organic pigments and inorganic pigments are used. The ink vehicle is mainly composed of a resin such as a thermosetting resin or an ultraviolet curable resin. Here, as the thermosetting resin, an alkyd type or polyester type resin or the like is used. As the ultraviolet curable resin, an ultraviolet radical polymerization type resin, an ultraviolet cation polymerization type resin, or the like is used. Furthermore, the ink may contain an additive. Additives include matting agents, waxes (natural, petroleum, synthetic), desiccants, dispersants, wetting agents, crosslinking agents, gelling agents, thickeners, anti-skinning agents, stabilizers, An antifoaming agent, a photopolymerization initiator, or the like is used.

  The ink layer 51 is formed of a so-called repelling ink. That is, the ink layer 51 is formed of ink that repels the paint when the paint for forming the topcoat layer 52 is applied to the surface of the ink layer 51. Here, the unevenness in the top coat layer 52 is formed by repelling the paint forming the top coat layer 52 by the ink layer 51.

  In order to repel the paint for forming the top coat layer 52 by the ink layer 51 (to form the unevenness), the surface tension of the ink used for forming the ink layer 51 is used for forming the top coat layer 52. It is desirable to set 5 mN / m or more lower than the surface tension of the paint. In other words, it is desirable that the surface tension of the ink is lower than the surface tension of the paint, and that the difference in surface tension between the ink and the paint is 5 mN / m or more. Here, the reduction of the surface tension of the ink can be carried out, for example, by adding silicone to normal ink.

On the other hand, the coating material used for the topcoat layer 52 is mainly composed of a resin such as a thermosetting resin or an ultraviolet curable resin, and contains a wax component as necessary.
Thermosetting resins include phenol-formaldehyde resin, furan-formaldehyde resin, xylene-formaldehyde resin, ketone-formaldehyde resin, amino resin, urea formaldehyde resin, melamine-formaldehyde resin, alkyd resin, unsaturated polyester resin, epoxy resin ( Examples: novolac type epoxy resin, bisphenol type epoxy resin), bismaleimide resin, triallyl cyanurate resin, thermosetting acrylic resin, silicone resin, oily resin and the like are used.

  Further, a composition of a thermosetting resin and a thermoplastic resin may be used. In this case, a vinyl chloride-maleic acid-vinyl acetate copolymer, an acrylic polymer, a saturated polyester resin, or the like is used as the thermoplastic resin. These resins can be used singly or in combination of two or more. Moreover, well-known acid catalysts, such as toluenesulfonic acid and benzenesulfonic acid, may be added to these resin compositions as needed. When using an acid catalyst, it is desirable to add the acid catalyst in an amount of 0.5 to 1% by mass based on the resin. Of these resins, it is particularly desirable in terms of coating film performance to use a composition of a melamine-formaldehyde resin and a saturated polyester resin or a composition of a thermosetting acrylic resin and a melamine-formaldehyde resin.

  On the other hand, as the ultraviolet curable resin, for example, a cationic curable resin, a radical curable resin, or the like is used. As the cationic curable resin, a composition of an ultraviolet curable epoxy resin and a cationic photopolymerization catalyst is used.

  Moreover, in the coating material used for the topcoat layer 52, you may add a crosslinking agent and a sensitizer to said resin as needed. As the crosslinking agent, various polyols (eg, ε-caprolactone triol) and the like are used. A thioxanthone derivative or the like is used as the sensitizer. Furthermore, natural, petroleum, or synthetic wax agents may be added alone or in combination as a wax component to the paint used for the top coat layer 52 in order to compensate for slippage. Further, various silicone oils may be added as a leveling agent for the surface of the topcoat layer 52 and / or to further improve the stability in the paint state and to impart initial slipperiness to the topcoat layer 52. good.

An example of the composition of the ink layer 51 and the topcoat layer 52 is as follows.
[Topcoat layer 52]
Resin component: 30% polyester, 13% acrylic, 55% amino, 2% epoxy
Wax: Petroleum 0.3%, Natural 1%, Synthetic 0.2% (based on resin component)
Silicone oil (mixed): 0.15% (based on resin component)
Surface tension: 33 mN / m
Thickness: 5μm
[Ink layer 51] (repellent ink)
Main resin: Alkyd resin Pigment: TiO ₂
Surface tension: 28 mN / m
Thickness: 2μm

  The above is an example of a method for forming the second region R2. For example, the second region R2 may be formed by using a technique disclosed in Japanese Patent Application Laid-Open No. 2002-361172. That is, the second region R <b> 2 may be formed by forming irregularities by agglomerating the coating material forming the top coat layer 52 in the form of spots on the surface of the ink layer 51.

Next, the surface state of the first region R1 will be described with reference to FIG.
As shown in FIG. 4D, in the first region R1, the ink layer 51 is provided on the surface of the substrate 50 as described above. A topcoat layer (outermost layer) 52 having a surface smoother than the topcoat layer 52 in the second region R2 is provided on the surface of the ink layer 51.

  Here, the ink layer 51 in the first region R <b> 1 is formed using an ink (ordinary ink) that does not repel the paint forming the top coat layer 52. In other words, the ink that forms the ink layer 51 is an ink whose surface tension is equal to or higher than the surface tension of the paint that forms the topcoat layer 52. Therefore, in the first region R1, the paint that forms the topcoat layer 52 is not repelled, and the surface of the topcoat layer 52 is smoother than the topcoat layer 52 in the second region R2. The basic composition of the ink that forms the ink layer 51 is the same as described above. The basic composition of the paint for forming the top coat layer 52 is the same as described above.

  The first identification mark 23a is formed in the first region R1, and the second identification mark 23b is formed in the third region R3. The first identification mark 23 a and the second identification mark 23 b are formed by the ink layer 51.

Next, the operation of the container 20 in the display device 30 will be described.
FIG. 11 is a view for explaining the operation of the container 20 in the display device 30. In the drawing, the first roller group 311, the second roller group 312, and the third roller group 313 (see FIG. 9) are not shown.
When the container 20 is placed behind the placement portion 31 (see reference numeral 4A), the container 20 moves forward while being guided by the left side guide 32. At this time, if the first region R1 is in contact with the resistance applying portion 33, slippage between the first region R1 and the resistance applying portion 33 is suppressed (a drag is applied to the first region R1), The container 20 moves forward while rotating clockwise (see reference numeral 4B).

  And if 2nd area | region R2 will be in the state which contacts resistance provision part 33 like code | symbol 4C, a slip will arise between 2nd area | region R2 and resistance provision part 33, and rotation of the container 20 will stop. Thereafter, the container 20 moves (slides) forward while being guided by the left side guide 32. Thereby, the container 20 that has reached the front of the display device 30 is in a state in which the second identification mark 23b faces forward. In addition, in the present embodiment, the second region R2 and the second identification mark 23b are arranged with a predetermined positional relationship determined in advance. More specifically, when the second region R2 is directed leftward (one direction), the second identification mark 23b is disposed so as to face forward (a direction intersecting one direction, a direction orthogonal to the one direction). Has been. For this reason, when the second region R2 comes into contact with the resistance applying portion 33, the second identification mark 23b faces forward.

  Here, when 2nd area | region R2 contacts the resistance provision part 33, 2nd area | region R2 and the resistance provision part 33 contact in the state close | similar to a point contact. In other words, the contact area between the second region R2 and the resistance applying portion 33 is reduced. For this reason, it is considered that the slip occurs between the second region R2 and the resistance applying portion 33. After the identification mark 23 faces forward, it is preferable that the sliding resistance applied from the left side guide 32 to the container 20 is as small as possible. For this reason, in FIG. 9B, the resistance applying portion 33 is arranged halfway along the movement path of the container 20, and the resistance applying portion 33 is not provided from a predetermined position to the take-out portion of the container 20.

  In the present embodiment, the mounting portion 31 is inclined in the width direction. However, for example, the front portion of the resistance applying portion 33 may not be inclined in the width direction. Also in this case, the sliding resistance acting on the container 20 from the left side guide 32 is lowered, and the container 20 is difficult to rotate. Further, in the above, the container 20 is brought into contact with the resistance applying part 33 by giving the inclination in the width direction to the mounting part 31, but the container 20 is brought into contact with the resistance applying part 33 without giving the inclination in the width direction. Can do. For example, an urging member such as a leaf spring is provided on the right side guide 32 side, and the container 20 can be brought into contact with the resistance applying portion 33 using this urging member.

  Here, a method of forming the first region R1 to the fourth region R4 will be described in more detail. 1st area | region R1-4th area | region R4 can be formed in the printing process included in the manufacturing process demonstrated above, for example. In more detail, it can form using the printing machine installed in the printing process.

Here, FIG. 12 is a diagram illustrating a printing machine that performs printing on the container 20.
A printing machine 500 shown in the figure is a printing machine that performs so-called offset printing. The printing machine 500 includes a blanket cylinder 510, a printing plate corresponding to a pattern, and an ink application device 520 that applies ink for forming the ink layer 51 to the blanket cylinder 510, a support roll 530, and the top coat layer 52. A paint application device 540 for applying the paint to be applied is provided. Although not shown, a support member that is inserted into the base body 21 (tubular member) and supports the base body 21 from the inside is provided.

  The blanket cylinder 510 is formed in a disc shape and rotates in one direction. The blanket cylinder 510 has a plurality of blankets (transferred portions) 511 on the outer peripheral surface. The blanket cylinder 510 transfers the ink transferred from the printing plate to the blanket 511 in the ink application device 520 to the outer surface of the cylindrical member (see also FIG. 3D) at the transfer portion Te. A pattern including the identification mark 23 is formed on the cylindrical member.

  A plurality of ink applicators 520 are provided for each color along the circumferential direction of the blanket cylinder 510. Each ink coating device 520 includes a printing cylinder 522 that contacts the blanket 511 of the blanket cylinder 510, and an ink supply device 521 that supplies ink to the outer peripheral surface of the printing cylinder 522. Here, the printing cylinder 522 has the above printing plate on the outer peripheral surface, and transfers the ink supplied by the ink supply device 521 to the blanket 511.

  As a result, ink is placed on the surface of each blanket 511. Specifically, ink is sequentially placed from each of the printing cylinders 522 on each surface of each blanket 511 and assigned to each region assigned to each printing cylinder 522. As a result, an ink image corresponding to the design is formed on the surface of each blanket 511. The ink image moves to the transfer portion Te as the blanket cylinder 510 rotates, and is transferred to the outer peripheral surface of the cylindrical member supported from the inside by a support member (not shown). As a result, the ink layer 51 is formed. More specifically, in this embodiment, the orientation of the tubular member is aligned so that the tubular member in a state in which the planned opening area 44 faces in a certain direction enters the transfer portion Te. More specifically, the directions of the cylindrical members are aligned using the pins described above. Then, the cylindrical member whose direction is aligned is conveyed to the transfer portion Te. In the process of transporting the cylindrical member to the transfer portion Te, the cylindrical member is gripped by a stopper (not shown), and the support member is inserted into the gripped cylindrical member. Thereafter, the support member starts rotating at the timing when the cylindrical member comes into contact with the blanket 511 at the transfer portion Te. As a result, the design including the identification mark 23 is transferred from the blanket 511 to the outer peripheral surface of the cylindrical member. In this case, the identification mark 23 and the planned opening area 44 have a predetermined positional relationship as described above.

  The support roll 530 is disposed at a position opposite to the blanket cylinder 510 and rotates in one direction, and conveys the cylindrical member that has moved to the transfer unit Te. Further, the support roll 530 uses the support member (not shown) and conveys the moved cylindrical member to the transfer unit Te in a rotated state. The coating material application device 540 applies the coating material to the outer peripheral surface of the cylindrical member to which the ink image is transferred (the cylindrical member on which the ink layer 51 is formed). As a result, the top coat layer 52 is formed.

  Here, when such a printing machine 500 is used, by placing ink having a function of repelling paint from the printing cylinder 522 in charge of the ink layer 51 in the second region R2 on the blanket 511, A surface difference can be formed between the first region R1 and the third region R3 adjacent to the second region R2. In the present embodiment, since the outer surface of the base 21 is inclined with respect to the axis, it is necessary to make the blanket roll, printing plate, inker, etc. in the shape of a truncated cone in order to be applied to a normal can offset printing machine. There is.

  In the above, so-called repellant ink is used to form irregularities in the second region R2, but for example, so-called foamed ink containing a foaming agent is used to form the ink layer 51 and irregularities are formed in the second region R2. Also good. In the above description, the sliding resistance is reduced by providing irregularities in the second region R2, but the sliding resistance may be reduced by applying or applying a fluororesin or the like to the second region R2. In this case, it is more convenient to apply a Teflon (registered trademark) processed tape or the like. Similarly, fluororesins (PTFE, PFA, PVDF, etc.) and their tapes, or film tapes with low frictional resistance, such as ultra high molecular weight polyethylene films, can be used.

  Furthermore, the coating material for forming the topcoat layer 52 in the second region R2 may be a so-called mat coating material, thereby providing the second region R2 with unevenness and reducing the sliding resistance. In this case, it is necessary to paint differently. That is, it is necessary to apply a mat paint to the second region R2, and apply a paint other than the mat paint to the first region R1. In addition, the matte paint may be further applied to the surface of the topcoat layer 52 in the second region R2 to give unevenness to the second region R2, and the sliding resistance in this region may be reduced. In addition, the ink layer 51 in the second region R2 may be formed by repelling ink, and the top coat layer 52 may be formed on the surface of the ink layer 51 using a mat paint.

  Here, the mat paint is a paint that contains particles such as glass, silica, and resin that scatter light and has a lower gloss than a normal paint. Since the mat paint contains particles such as glass, silica, and resin as described above, irregularities are formed on the surface thereof. For this reason, even when the mat paint is used, the sliding resistance between the left side guide 32 and the second region R2 is reduced, and the above-described slip can be generated.

  Further, for example, after the top coat layer 52 in the first region R1 to the fourth region R4 is formed with a mat paint, a paint that smoothes the surface of the first region R1 and the third region R3 (for example, the glass or the like) May also be applied. That is, by applying a mat paint, the entire circumference of the container 20 is made slippery, and then a paint for smoothing the surface is applied to the first region R1 and the third region R3, and the first region R1 and the third region R3 are applied. It may be difficult to slip. Further, for example, after the topcoat layer 52 in the first region R1 to the fourth region R4 is formed with a mat paint, the above-mentioned Teflon (registered trademark) tape or seal having a smaller friction coefficient than the topcoat layer 52, for example. Etc. may be attached to the second region R2 and the fourth region R4.

  Furthermore, in the above, the unevenness is formed in the second region R2 and the fourth region R4, and the surfaces in the first region R1 and the third region R3 are made smoother than the surfaces in the second region R2 and the fourth region R4. The identification mark 23 was directed forward. By the way, the rotation / non-rotation of the container 20 is also influenced by, for example, the material constituting the top coat layer 52. For this reason, even when the first region R1 and the third region R3 are uneven and the second region R2 and the fourth region R4 are formed smoothly, the identification mark 23 can be directed forward. There is. That is, in the present embodiment, the portion where the identification mark 23 is provided is smoothed and the unevenness is given to the portion where the identification mark 23 is not provided. However, the present invention is not limited to such a form, and at least 2 having a different friction coefficient. If one region is formed corresponding to the identification mark 23, the identification mark 23 can be directed forward.

DESCRIPTION OF SYMBOLS 21 ... Base | substrate, 23a ... 1st identification mark, 23b ... 2nd identification mark, 42 ... Tab for opening, 44 ... Opening area | region, 211 ... Side part, 212 ... Upper part, R1 ... 1st area | region, R2 ... 2nd area | region

Claims (9)

A cylindrical portion having one end opened and having an opening at the one end;
A closed portion formed integrally with the tubular portion and closing the other end of the tubular portion;
With
A beverage can characterized in that the diameter of the other end of the cylindrical part is smaller than the diameter of the opening of the cylindrical part.   The closing portion is provided with an opening region that is opened when a drinking mouth is formed, and a tab that presses the opening region and forms an opening in the opening region when operated by a user. The beverage can according to claim 1. The outer peripheral surface of the cylindrical portion is marked,
The beverage can according to claim 2, wherein the mark and the opening region are arranged in a state having a predetermined positional relationship.   A mark is attached to the outer peripheral surface of the cylindrical portion, and a first region having a predetermined coefficient of friction disposed on the outer peripheral surface with a predetermined positional relationship with the mark, and 4. A second region having a predetermined positional relationship with the mark and having a friction coefficient different from that of the first region is formed. Beverage cans.   The beverage can according to claim 4, wherein the first region and the second region are arranged at different positions in the circumferential direction of the cylindrical portion.   The second region is formed so as to have a friction coefficient smaller than that of the first region, and is arranged so as to face a direction substantially perpendicular to the direction in which the mark faces. The beverage can according to claim 4 or 5, characterized in that. A base body forming step of forming a cylindrical base body having an opening formed at one end and the other end closed from a plate-like member;
A deformation step of deforming the base so that the diameter of the opening is larger than the diameter of the other end of the base;
The manufacturing method of the drink can which has this. An opening region forming step for forming an opening region that is opened when a drinking mouth is formed for the plate-shaped member,
A tab attachment step of attaching a tab that presses the opening area and forms an opening in the opening area to the plate-like member when operated by a user;
The method for producing a beverage can according to claim 7, further comprising: A printing step of printing a mark on the outer peripheral surface of the substrate;
A first area forming step of forming a first area having a first friction coefficient on the outer peripheral surface of the base body, which is a place having a predetermined positional relationship with a place where the mark is printed;
A second region forming step for forming a second region having a second friction coefficient on the outer peripheral surface of the base body and having a predetermined positional relationship with a portion where the mark is printed;
The method for producing a beverage can according to claim 7 or 8, further comprising:

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