JP2019006494A - Tab for opening can and can lid - Google Patents

Abstract

To provide a tab for opening a can and a can lid which can prevent separation of a cut-off piece before opening the can and can satisfactorily maintain a finger hooking property of the tab for opening the can at the time of opening the can.SOLUTION: A tab for opening a can forms a cut-off piece separated by a cut line leaving a part of a connection part in a tab panel. The connection part is disposed on a pulling-up part side of the tab panel. The cut-off piece is disposed so as to be inclined downward from a base end part on the pulling-up part side to a top end part on a pressing part side, and the top end part is disposed below an upper surface of the tab panel around the cut-off piece.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cane tab-type tab for can opening and a can lid that are fixed on a can lid main body and that are attached to the can lid main body and push down a part of the can lid main body to open a drinking mouth. .

  For the purpose of so-called sales promotion (sales promotion activities) of cans such as beverage cans, campaigns and the like are being given to consumers according to the number of cans purchased. In such sales promotions, until now, the can lid has been opened after opening the can by using a tab that can be separated from the can lid body when opening the mouth (ie, a tab that is not a steion tab type). Collecting tabs separated from the body was done. However, in recent years, in order to prevent various problems caused by discarding the tab after opening the can, the drinking mouth can be opened with the tab attached to the can lid body. Steion tab-type opening tabs that can be partially fixed are widely used. For this reason, the sales promotion employs a method in which a removable application sticker is attached to the can body of the can without using a can opening tab, and the application sticker is collected.

  By the way, Japanese Patent Application Laid-Open No. H10-228667 discloses a steer tab type can opening tab in which a separating piece partially connected to the finger hole is formed in the finger hole (finger hole portion). In this Patent Document 1, after opening the can by operating the tab for opening the can, the operation of extruding the separating piece with the fingertip and then returning it in the reverse direction is repeated once or twice, thereby easily opening the can. It is described that the separation piece can be separated from the can tab. Further, Patent Document 1 describes that it is possible to perform sales promotion on a steion tub by collecting only the separation pieces while being separated from the can lid.

JP-A-5-178346

  By the way, in the manufacturing process of cans such as beverage cans, since cans are manufactured at a high speed of about 2000 cans per minute, it is necessary to perform the application seal attaching process at the same frequency. For this reason, the exchange frequency of a roll etc. provided with a plurality of application seals is also increased, and it is difficult to manage the application seals securely on individual cans, replenishment of rolls, and the like. In addition, the application sticker attached to the appearance of the can can be removed even if it is not the purchaser of the can, or it can be removed at some timing, etc. There is a fear.

  On the other hand, the can opening tab of Patent Document 1 is provided with a separating piece instead of the application sticker, so that there is no problem with the management of the application sticker. However, as shown in FIG. 3 of Patent Document 1, in the can opening tab, the separation piece is in a position lower than the panel surface of the surrounding tab body (position lower than the periphery of the opening end of the finger hole). The cut surface of the separation piece formed by pressing is exposed on the lower surface side of the opening tab. For this reason, when the can is opened by operating the tab for opening the can, if the finger is inserted from the pulling portion toward the pressing portion (rivet) side, the finger is likely to come into contact with the cut surface of the separation piece, which causes pain to the user. There is a risk of feeling uncomfortable.

  Further, as shown in FIG. 3 of Patent Document 1, in the can opening tab of Patent Document 1, since the surface direction of the separating piece is arranged parallel to the panel surface of the opening tab, the opening tab When attaching to the can lid main body, the separation piece comes into contact with the panel surface of the can lid main body, so that the separation piece may be pushed by the panel surface and jump out to the upper surface side of the can opening tab. In this case, the portion protruding to the upper surface side of the can opening tab is likely to come into contact with the outside, so that the separation piece may be inadvertently cut off in a state before opening the can.

  The present invention has been made in view of such circumstances, and can prevent separation of a separation piece before opening the can and can maintain the finger-holding property of the opening tab at the time of opening the can. An object is to provide a tab and a can lid.

  The can opening tab of the present invention includes a fixing portion fixed to a rivet of a can lid main body provided in the vicinity of the center of the tab main body forming an outer shape, and a tip of the tab main body, A push-down portion for pushing down the opening piece and a pull-up portion provided on the opposite side of the push-down portion with the fixing portion of the tab main body interposed therebetween, and pulling up the can lid body to push down the push-down portion An upper portion, and a tab panel formed between the pulling portion and the fixing portion and having a concave shape on the upper surface side so as to be convex toward the lower surface side. A separation piece that is separated by a cut line is formed, the connecting portion is disposed on the pulling-up side of the tab panel, and the cutting piece extends from a base end portion on the pulling-up side. Down to the tip of the side Inclined is arranged, is arranged below the upper surface of the tab panel around the tip portion is the disconnect pieces.

In the tab for opening the can of the present invention, the separating piece is disposed so as to be inclined downward from the proximal end portion on the pulling side to the distal end portion on the pressing portion side, and the leading end portion of the separating piece is below the upper surface of the surrounding tab panel. Therefore, the amount of the cut surface of the cut line exposed to the lower surface side of the tab body can be reduced on the base end side as compared with the case where the separating pieces are horizontally disposed. Therefore, when opening the can by operating the can opening tab (when opening the can), even if a finger is inserted from the upper part of the opening tab toward the pressing part (rivet) side, the cut piece is cut It is difficult for the finger to come into contact with the surface, and it is possible to prevent the user from feeling pain or discomfort. In addition, there is a possibility that the tip of the separation piece arranged below the lower surface of the tab panel may be pushed back upward by contacting the panel surface of the can lid body, but the separation piece is directed downward from the base end to the tip. Therefore, the separating piece acts so as to press down (bias) the panel surface at the distal end with the base end (connecting portion) side as a fulcrum. For this reason, even when the distal end portion of the separating piece comes into contact with the panel surface of the can lid main body, the posture inclined downward from the base end portion to the distal end portion of the separating piece is maintained. Therefore, it can avoid that the front-end | tip part of a separation piece protrudes from the upper surface of the surrounding tab panel, and it can prevent that a separation piece is cut | disconnected carelessly in the state before a can opening.
When the surface direction of the separation piece is horizontally arranged, when the base end portion of the separation piece is pushed back upward by contacting the panel surface of the can lid body, the distal end portion of the separation piece is There is a risk of jumping from the top. In this case, the portion protruding to the upper surface side of the can opening tab is likely to come into contact with the outside.

  In a preferred embodiment of the opening tab of the present invention, the vertical distance from the upper surface of the tip of the separating piece to the upper surface of the tab panel around the separating piece is not more than three times the plate thickness of the separating piece. It is good to be.

  When the vertical distance between the top surface of the tip of the separation piece (the bottom end of the top surface) and the top surface of the tab panel is more than three times the thickness of the separation piece, it touches the panel surface when attached to the can lid body. As a result, the amount pushed back upward increases, and when the can opening tab is attached to the can lid body, stress may concentrate on the connecting portion between the connecting portion and the separating piece, and the separating piece may be separated. Therefore, it is preferable that the vertical distance between the upper surface of the tip of the separation piece and the upper surface of the tab panel is not more than three times the plate thickness of the separation piece.

  The can lid of the present invention comprises a can lid body and the can opening tab.

  ADVANTAGE OF THE INVENTION According to this invention, isolation | separation of the separation piece before a can opening can be prevented, and the finger catching property of the tab for can opening at the time of can opening can be maintained favorable.

It is a top view of the tab for can opening of embodiment of this invention. It is a rear view of the can opening tab shown in FIG. It is principal part sectional drawing of the tab for can opening in the arrow cross section which follows the AA line shown in FIG. It is a top view explaining a mode that a sheet material is processed sequentially in one embodiment of a manufacturing method of a tab for can opening. It is a top view of the can lid which concerns on embodiment of this invention which attached the tab for can opening shown in FIG. It is sectional drawing of the can lid in the arrow cross section which follows the BB line shown in FIG. It is principal part sectional drawing of the can lid shown in FIG. It is principal part sectional drawing of the can which fastened the can lid of this embodiment to the opening edge part of the can body main body.

Hereinafter, embodiments of a can opening tab and a can lid according to the present invention will be described with reference to the drawings.
The can lid 101 of the present embodiment is a so-called stab tub type can lid used for cans such as beverage cans, for example. As shown in FIGS. 5 to 7, the can lid body 2 and the can lid body 2 and a can opening tab 1 attached to 2. Further, as shown in FIG. 8, the can lid 101 configured in this manner is a can in which the inside of the can body 3 is sealed by being wound around the opening end of the can body 3 filled with the contents. 201 is manufactured. In addition, although illustration is abbreviate | omitted, the can body main body 3 is formed in the bottomed cylinder shape. The can body main body 3, the can lid main body 2 and the can opening tab 1 are each formed of an aluminum alloy.

  As shown in FIGS. 5 and 6, the can lid body 2 includes a substantially disc-shaped panel portion 21 and an annular counter sink provided so as to protrude downward along the outer peripheral portion of the panel portion 21. Part 22. A panel deboss 23 formed in a concave shape is provided on a part of the panel portion 21, and a score 24 defining an opening piece 27 is formed on the bottom surface of the panel deboss 23, and the opening piece 27 has a rivet 25. And a finger-hanging recess 26 disposed on the opposite side.

The score 24 is broken by pressing by the can opening tab 1 and the opening piece 27 is pushed into the inside of the can to open the drinking mouth. An inner bead 28 that protrudes upward along the score 24 is formed on the opening piece 27, and the opening piece 27 is reinforced.
The rivet 25 is formed by coining the upper surface of the panel portion 21 in a ring shape so that the center portion of the panel portion 21 protrudes upward.

Further, the finger-hanging recess 26 is formed along the rear end portion of the can opening tab 1 so that a part of the bottom surface of the panel deboss 23 is further recessed in the vicinity thereof. Thus, the unsealing person easily puts his / her finger on the rear end portion of the can opening tab 1 below the rear end portion (pull-up portion 17) of the can-opening recess 26, and the rear end portion can be easily formed. Can be raised.
Further, a convex portion 29 called dimple is formed between the rivet 25 and the finger-hanging concave portion 26. Two protrusions 29 protrude from the upper surface of the panel deboss 23 and are formed at intervals in the width direction of the opening tab 1. When the outer edge of the tab 1 for can opening is caught by this convex part 29, the tab 1 for can opening can be prevented from rotating around the rivet 25.

  As shown in FIGS. 1 and 2, the can opening tab 1 is curled by bending the peripheral edge portion 19 of the tab main body 11 forming the outer shape to the lower surface side, thereby improving the overall rigidity. ing. In the vicinity of the center of the tab main body 11, a fixing portion 12 having a rivet hole 15 fixed to the rivet 25 of the can lid main body 2 is provided. Further, the fixing portion 12 is partitioned by a U-shaped slot 13. The can opening tab 1 is inserted into the rivet hole 15 formed in the fixing portion 12 and the rivet 25 of the can lid body 2 is inserted, and the bottom surface of the fixing portion 12 is in contact with the bottom surface of the panel deboss 23. It is attached to the can lid body 2 by caulking 25.

  Further, the can opening tab 1 is provided at the distal end portion of the tab main body 11 to push down the opening piece 27 of the can lid main body 2 and to open the tab main body 2. A pulling portion 17 provided at a rear end portion arranged on the opposite side across the fixing portion 12 and pulled up from the can lid main body 2 to push down the pressing portion 16, a pulling portion 17 of the tab main body 11, the fixing portion 12, And a tab panel 14 whose upper surface side is formed in a concave shape so as to protrude toward the lower surface side.

  The peripheral edge portion 19 of the tab body 11 including the pressing portion 16 and the pulling portion 17 is formed by being folded back to the lower surface side. Further, the pull-up portion 17 is formed in a concave shape at the rear end portion of the tab main body 11 so that a part on the lower surface side (the center portion in the width direction) of the peripheral edge portion 19 is convex upward. The thickness of the pull-up portion 17 is smaller than the thickness of the can opening tab 1 (the thickness from the upper surface of the pull-up portion 17 to the lower surface of the peripheral edge portion 19 protruding to the lower surface side of the tab main body 11).

  As shown in FIG. 1, the tab panel 14 has a substantially rectangular shape in plan view, and has four corners chamfered by gentle arcs. The center of the rivet hole 15 of the tab body 11 and the pressing portion The short sides of the rectangle are arranged in parallel to the center line L passing through the 16 tips, and the long sides of the rectangle are orthogonal to each other. In the tab panel 14, a separation piece 41 is formed which is separated by a cut line 53 while leaving a part of the coupling portion 42. The cut piece 41 is marked with a sales promotion stamp or the like (not shown).

  In this case, as shown in FIG. 2, the cut line 53 is separated from the first cut line 51 formed along the peripheral edge of the tab panel 14 except for a part of the peripheral edge, and from both ends of the first cut line 51. A pair of second cut lines 52, 52 formed toward the center of the piece 41. Moreover, the connection part 42 is formed between a pair of 2nd cut lines 52 and 52, and the connection part 42 is 1 in the center part by the side of the pulling-up part 17 side of the tab panel 14, as shown in FIG.1 and FIG.2. It is arranged in places.

  The cut line 53 is formed in the flat concave surface portion (bottom surface portion) 14c of the tab panel 14, and the first cut line 51 is substantially rectangular in plan view along the peripheral edge of the concave surface portion 14c, and has four corners. The part is formed in a chamfered shape by a gentle arc. Further, both ends of the first cut line 51 are disposed on the pulling upper portion 17 side of the tab panel 14 and are disposed at symmetrical positions with the center line L of the tab main body 11 interposed therebetween.

  Further, as shown in FIG. 3, the separation piece 41 defined by the cut line 53 is disposed so as to be inclined downward from the base end portion 41b on the pull-up portion 17 side to the tip end portion 41a on the pressing portion 16 side. The tip 41a is disposed on the upper surface of the tab panel 14 around the separation piece 41, in this case, below the upper surface of the concave portion 14c. Further, the vertical distance V1 from the upper surface of the distal end portion of the separation piece 41 to the upper surface of the tab panel 14 around the separation piece 41 is set to be not more than three times the plate thickness t1 of the separation piece 41. As shown in FIG. 3, the vertical distance V1 is the endmost distance between the lowest end position on the top surface of the tip 41a of the separation piece 41 and the opening end of the top surface of the tab panel 14 around the separation piece 41. The

  For example, the opening tab 1 is formed by processing a metal plate having a thickness of 0.250 mm or more and 0.350 mm or less. As shown in FIG. It is provided between 250 mm and 0.350 mm. The vertical distance V1 from the upper surface of the tip portion of the separation piece 41 to the upper surface of the tab panel 14 (concave surface portion 14c) around the separation piece 41 is adjusted according to the size of the plate thickness t1 of the separation piece 41. For example, when the plate thickness t1 of the separating piece 41 is 0.250 mm, the vertical distance V1 is adjusted to a size exceeding 0 mm and a maximum of 0.750 mm or less (three times or less of the plate thickness t1).

In addition, as shown in FIG. 4, the can opening tab 1 configured as described above has a hole forming step (S11) while feeding the belt-like sheet material 70 in the direction indicated by the white arrow (forward feeding direction). After the tab panel processing step (S12), the outer shape extraction step (S13), the curling step (S14, S15), and the separation piece processing step (S16) are sequentially performed, the sheet material 70 is molded by being cut off. The sheet material 70 is formed of an aluminum alloy, and is formed in a width that allows the opening tabs 1 to be formed in a single row or in a plurality of rows at the same time. In FIG. 4, the center line of the can opening tab 1 (the center line of the tab body 11 passing through the center of the rivet hole 15 and the tip of the pressing portion 16) L is along the length direction (forward feed direction) of the sheet material 70. It shows what is formed in a row so as to be arranged in a row. In FIG. 4, an alternate long and short dash line L indicates a center line of the can opening tab 1 to be molded. Further, in FIG. 4, a hatched area indicates a portion that has disappeared from the surface of the sheet material 70 due to drilling or bending.
Hereinafter, it demonstrates in order of a process.

<Drilling process (S11)>
In the drilling step (S11), as shown at the position of S11 in FIG. 4, a material escape hole for forming the tip of the rivet hole 15, the U-shaped slot 13 around the fixing portion 12, and the pressing portion (tab nose) 16 is formed. 72, a carry strip hole 74 for forming the connecting piece 18, a pilot hole 75, and the like are formed. Among them, the rivet hole 15, the slot 13, and the material escape hole 72 are arranged on the center line L of the opening tab 1, and two carry strip holes 74 are formed symmetrically via the center line L. A connecting piece 18 is formed between the two carry strip holes 74. The material escape hole 72 is formed in an isosceles triangle shape in plan view, and is formed so as to gradually decrease the width from the front end toward the rear end along the center line L of the opening tab 1. .

  In FIG. 4, a plurality of holes are formed in one station. However, in this drilling step (S11), a plurality of stations are formed, and pilot holes 75 are formed in the first station, and each subsequent hole is formed. In the station, the above-described plurality of holes are separately formed in a plurality of times while positioning with reference to the position of the pilot hole 75. In the example shown in FIG. 4, the pilot hole 75 is formed only on one side of the opening tab 1 to be molded, but may be formed so as to be disposed on both sides.

<Tab panel processing step (S12)>
In the tab panel processing step (S12), the concave tab panel 14 is formed as shown in the position of S12 in FIG. As shown in FIG. 4, the tab panel 14 is formed on the same side with respect to the two connecting pieces 18 and the rivet holes 15 formed in the previous drilling step (S11), and the two connecting pieces are connected. The pieces 18 are formed so as to be on both sides of the tab panel 14 in the forward feeding direction of the sheet material 70 (symmetrical with respect to the center line L in FIG. 4). In other words, the tab panel 14 is formed between the two carry strip holes 74. Since the tab panel 14 is formed by drawing, the surrounding material is drawn into the tab panel 14. In the tab panel processing step (S12), since the outer diameter removing step (S13) described below has not yet been performed, the sheet material 70 exists in a sufficient area around the molded portion of the tab panel 14. . For this reason, the shrink deformation at the time of molding of the tab panel 14 can be restrained appropriately, and the generation of wrinkles is prevented.

<Outline extraction step (S13)>
In the outer shape removal step (S13), as shown at the position of S13 in FIG. The outer edge of the tab material 61 formed by expanding the tab body 11 is cut. By this outer shape extraction step, the tab material 61 is connected to the carrier portion 71 of the sheet material 70 by each connection piece 18 formed between the two carry strip holes 74. At this time, the tab material 61 has a flat shape except for the tab panel 14.

<Curling process (S14, S15)>
The curling process (S14, S15) further includes an end bending process (S14) and a folding process (S15).
(End bending process)
In the end bending step (S14), as shown in the position of S14 in FIG. 4, the outer periphery of the tab material 61 that has been trimmed is slightly bent to the back side, and the vicinity of the U-shaped slot 13 is pressed, The portion (adhering portion) 12 surrounded by the slot 13 is disposed at a position where it is pushed down from the peripheral portion of the tab material 61.

(Wrapping process)
In the folding step (S15), as shown in the position of S15 in FIG. 4, the edge portion of the tab material 61 that is bent at the end is bent by 90 ° further from the inner side to the back side than the end bent portion, and then curled. Wrap it into a shape. In the periphery of the tab panel 14, the tab panel 14 has a curl shape except for the connecting piece 18 at three sides except the rivet hole 15 side, that is, both side portions and the tip end portion (the pulling portion 17) of the tab panel 14.
Through this curling step (S14, S15), the peripheral portion of the tab material 61 that is flat except for the tab panel 14 is folded back, and the outline of the opening tab 1 is substantially formed.

<Separation piece processing step (S16)>
In the cut piece processing step (S16), as shown in the position of S16 in FIG. 4, a cut line 53 is formed in the tab panel 14 leaving a part of the connecting portion 42, and the tab main body 11 is connected via the connecting portion 42. The separation piece 41 connected to the is formed. At this time, the separation piece 41 is formed to be inclined downward from the base end portion 41b to the distal end portion 41a, and the distal end portion 41a of the separation piece 41 is located below the upper surface of the surrounding tab panel 14 (concave surface portion 14c). Form. Further, in the separation piece processing step (S16), processing for adjusting the shape such as further crushing the pulling portion 17 is performed together with the processing of the separation piece 41.

  Finally, the opening tab 1 is cut off from the carrier portion 71 of the sheet material 70 by cutting the connecting piece 18. The can opening tab 1 thus manufactured is placed on the can lid main body 2, the rivet 25 of the can lid main body 2 is inserted into the rivet hole 15, and the rivet 25 is crushed so that the can lid main body is crushed. The can lid 101 is manufactured.

  As shown by a two-dot chain line in FIG. 7, when the tip 41a of the separating piece 41 is arranged so as to protrude below the lower surface of the opening tab 1 (the lower surface of the peripheral edge 19), it is opened. When the can tab 1 is attached to the can lid body 2, the tip end portion 41 a of the separation piece 41 arranged at the lowermost position is pushed back upward by contacting the panel surface (panel deboss 23) of the can lid body 2. However, in the can opening tab 1, the separation piece 41 is disposed so as to be inclined downward from the base end portion 41 b to the distal end portion 41 a, so that the distal end portion 41 a of the separation piece 41 is pushed back upward by the panel surface. The separating piece 41 acts so as to press down (bias) the panel surface at the distal end portion 41a with the base end portion 41b (connecting portion 42) side as a fulcrum. For this reason, even when the distal end portion 41a of the separation piece 41 comes into contact with the panel surface of the can lid main body 2, the posture inclined downward from the base end portion 41b to the distal end portion 41a of the separation piece 41 is maintained.

  When the vertical distance V1 between the upper surface (the lowermost end of the upper surface) of the tip 41a of the separation piece 41 and the upper surface of the tab panel 14 exceeds three times the plate thickness t1 of the separation piece 41, the tab for opening the can When 1 is attached to the can lid main body 2, the amount of the tip 41 a of the separating piece 41 coming into contact with the panel surface (panel deboss 23) and pushed back upward is increased. For this reason, when attaching the can opening tab 1 to the can lid body 2, stress concentrates on the connecting portion between the connecting portion 42 and the separation piece 41, and the separation piece 41 may be separated. Therefore, the vertical distance V1 between the upper surface of the tip 41a of the separation piece 41 and the upper surface of the tab panel 14 is preferably set to be not more than three times the plate thickness t1 of the separation piece 41 as described above.

  In the can opening tab 1 of the present embodiment configured as described above, as shown in FIG. 3, the separation piece 41 is directed downward from the base end portion 41 b on the pulling portion 17 side to the tip end portion 41 a on the pressing portion 16 side. Since the tip end portion 41a of the separation piece 41 is arranged below the upper surface of the surrounding tab panel 14, the base end portion 41b side is compared with the case where the surface direction of the separation piece 41 is arranged horizontally. The amount of the cut surface of the cut line 53 exposed on the lower surface side of the tab body 11 can be reduced. For this reason, when opening the can by operating the can opening tab 1 (when opening the can), a finger is inserted from the pulling portion 17 of the opening tab 1 toward the pressing portion 16 (rivet 25). In addition, it is difficult for the finger to come into contact with the cut surface of the separation piece 41, and it is possible to prevent the user from feeling pain or discomfort. Therefore, the finger holdability of the opening tab 1 at the time of opening can be maintained well.

  Further, as described above, the tip 41a of the separation piece 41 disposed below the lower surface of the tab panel 14 may be pushed back upward by contacting the panel surface (panel deboss 23) of the can lid body 2. However, since the surface direction of the separation piece 41 is inclined downward from the base end portion 41b to the front end portion 41a, the separation piece 41 is arranged on the panel surface at the front end portion 41a with the base end portion 41b (connecting portion 42) side as a fulcrum. , And a posture inclined downward from the base end portion 41b to the tip end portion 41a of the separating piece 41 is maintained. Therefore, it can avoid that the front-end | tip part 41a of the cutting piece 41 protrudes from the upper surface of the tab panel 14 of the circumference | surroundings, and can prevent the cutting piece 41 from being carelessly cut | disconnected in the state before a can opening.

  In addition, when the surface direction of the separation piece 41 is horizontally arranged, when the base end portion 41b of the separation piece 41 is pushed back upward by contacting the panel surface of the can lid body 2, the separation piece 41 There is a possibility that the front end portion 41a may protrude from the upper surface of the tab panel 14 (in this case, the flat concave portion 14c). In this case, since the portion protruding to the upper surface side of the can opening tab 1 is likely to come into contact with the outside, the separation piece 41 may be inadvertently cut off in a state before opening the can.

  As described above, in the can opening tab 1 of the present embodiment, separation of the separation piece 41 before the can opening can be prevented, and the finger-holding property of the can opening tab 1 at the time of opening can be maintained well.

In addition, this invention is not limited to the thing of the structure of the said embodiment, In a detailed structure, a various change can be added in the range which does not deviate from the meaning of this invention.
For example, in the above embodiment, the cut line 53 is formed in the flat concave surface portion (bottom surface portion) 14 c of the tab panel 14, but the cut line 53 may be formed in the slope portion 14 s of the tab panel 14.

DESCRIPTION OF SYMBOLS 1 Tab for can opening 2 Can lid main body 3 Can trunk main body 11 Tab main body 12 Adhering part 13 Slot 14 Tab panel 14c Concave surface part 14s Slope part 15 Rivet hole 16 Pushing part 17 Pulling part 18 Connection piece 19 Peripheral part 21 Panel part 22 Countersink Portion 23 Panel deboss 24 Score 25 Rivet 26 Finger hooking recess 27 Opening piece 28 Inner bead 29 Protruding portion 41 Cut piece 41a Tip portion 41b Base end portion 42 Connecting portion 51 First cut line 52 Second cut line 53 Cut line 61 Tab material 70 Sheet Material 71 Carrier 72 Material escape hole 74 Carry strip hole 75 Pilot hole 101 Can lid 201 Can t1 Strip thickness V1 Vertical distance L Center line

Claims (3)

A fixing portion fixed to a rivet of a can lid body provided near the center of the tab body forming the outer shape;
A pressing portion provided at the tip of the tab body for pressing down and opening the opening piece of the can lid body; and
A pull-up portion that is provided on the opposite side of the pressing portion with respect to the pressing portion and sandwiches the fixing portion, and the can lid main body is pulled up to push down the pressing portion;
A tab panel provided between the pulling portion and the fixing portion and having a concave shape on the upper surface side so as to protrude toward the lower surface side;
In the tab panel, there is formed a separation piece separated by a cut line leaving a part of the connection part,
The connecting portion is disposed on the pull-up side of the tab panel;
The separation piece is disposed so as to be inclined downward from a base end portion on the pull-up side to a distal end portion on the pressing portion side, and the distal end portion is disposed below the upper surface of the tab panel around the separation piece. A can opening tab, characterized by   2. The vertical distance from the upper surface of the tip of the separation piece to the upper surface of the tab panel around the separation piece is not more than three times the plate thickness of the separation piece. Tab for opening cans.   A can lid comprising a can lid body and the can opening tab according to claim 1.

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