WO2012017840A1 - Couvercle de cannette et languette pour couvercle de cannette - Google Patents

Couvercle de cannette et languette pour couvercle de cannette Download PDF

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Publication number
WO2012017840A1
WO2012017840A1 PCT/JP2011/066737 JP2011066737W WO2012017840A1 WO 2012017840 A1 WO2012017840 A1 WO 2012017840A1 JP 2011066737 W JP2011066737 W JP 2011066737W WO 2012017840 A1 WO2012017840 A1 WO 2012017840A1
Authority
WO
WIPO (PCT)
Prior art keywords
tab
lid
rivet
opening piece
score
Prior art date
Application number
PCT/JP2011/066737
Other languages
English (en)
Japanese (ja)
Inventor
伊藤　秀樹
健一 柴田
Original Assignee
ユニバーサル製缶株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ユニバーサル製缶株式会社 filed Critical ユニバーサル製缶株式会社
Publication of WO2012017840A1 publication Critical patent/WO2012017840A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/001—Action for opening container
    • B65D2517/0014—Action for opening container pivot tab and push-down tear panel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/001—Action for opening container
    • B65D2517/0016—Action for opening container pivot tab, push-down and pull-out tear panel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/0059—General cross-sectional shape of container end panel
    • B65D2517/0061—U-shaped
    • B65D2517/0062—U-shaped and provided with an additional U-shaped peripheral channel

Definitions

  • the present invention relates to a can lid wound around an open end of a can body and a tab used for the can lid.
  • a steion tab type that can open a drinking mouth with a tab attached to a can lid body is known.
  • the can lid provided with this tab has the tab attached by a rivet, and by pulling up the finger hooked portion of the tab, the vicinity of the rivet is bent and becomes a fulcrum, and the tab nose portion (the tip of the tab) becomes the action point, The opening piece surrounded by the score on the panel surface is pressed and immersed to break the score and open the opening piece. At this time, the panel surface is broken along the score shape, and the opening piece is pushed into the beverage can and opened without leaving the can lid.
  • Patent Document 1 proposes a can lid in which an uneven portion for preventing slipping is formed on the back surface of the finger hooking portion of the tab to prevent finger slipping and to improve the can openability.
  • the can lid formed in this manner is packed (packed) in a stacked state together with other can lids in the process of being transported before being wound around the can body. In this stacked state, each can lid is designed so that the lower surface of the curl portion of the can lid contacts the upper surface of the curl portion of the other can lid located on the lower side, and the panel portion and the tab portion do not contact each other. Has been.
  • the can lid is made thin, and the blank diameter (the punching diameter at the time of molding) is made small.
  • Can lids with reduced height (curl height) have been developed.
  • the tab of one can lid and the lower surface of the panel portion of the other can lid can easily come into contact with each other.
  • the tab and the back surface of the finger hook recess may come into contact.
  • the oil used when forming the tab adheres to the panel back of the stacked can lid, and when the can lid is filled with the content to make a beverage can, the content is such as beer.
  • the foaming property may be reduced.
  • some of the can lids may be reversed and packed in the bag. It becomes the cause of the shortage and excess of the amount of.
  • Patent Document 2 in order to prevent contact between the tab and the back surface of the panel, the thickness of the tab finger rest portion is reduced, and a recess having a shallower depth than the finger rest recess is formed immediately below the finger rest portion. By doing so, the tab hooking property is secured without deteriorating the stackability of the can lid.
  • the present invention has been made in view of such circumstances, and avoids contact with the inner surface when the can lids are stacked without impairing the finger-holding property of the tab and without reducing the strength of the tab.
  • a can lid and a can lid tab used for the can lid are provided.
  • the can lid of the present invention includes a rivet that protrudes from the center of the upper surface of the can lid body, an opening piece defined by a score, and a tab that is attached to the rivet with one end overlapped on the opening piece. And a finger hook recess formed on the other end portion side of the tab, and pulling the other end portion of the tab upward, the one end portion presses the opening piece downward to break the score. And the edge of the other end portion of the tab has a flat portion orthogonal to the longitudinal direction of the tab, and the corners positioned at both ends of the flat portion. The upper surface of the part is recessed downward and formed low.
  • the corner portion of the flat portion that is the farthest from the center of the rivet of the tab is formed to be recessed downward, so that when the can lids are stacked, the corner portion is another can. Even in the case where the cover is disposed below the finger-hanging concave portion of the lid, these contacts can be reliably avoided. Moreover, since a countermeasure can be taken by making the shape of the corner of the other end of the tab, which is a slight recess, it can be constructed without reducing the strength of the tab. Furthermore, only the corners of the other end of the tab are recessed, and the gap between the tab and the finger-hanging recess can be ensured as before, so that the tab can be formed without impairing the finger gripping property. .
  • the can lid of this invention WHEREIN: It is good for the said corner
  • the corner portion has a shape in which the upper surface side is recessed in the thickness direction of the tab, but is provided so as to extend in the surface direction.
  • the lower surface of the central portion of the flat portion is recessed upward to form a lifting recess. Avoiding the corners that are formed in the lower part, the central part of the flat part is recessed upwards to form a lifting recess, so that the pulling recess and the finger hook are not lowered without reducing the strength of the other end of the tab.
  • the gap with the concave portion can be widened, and the tab hooking property can be improved.
  • the tab for can lids of this invention is attached to the rivet formed in the upper surface center part of a can lid main body, and overlaps one end part on the opening piece defined by the score in the said can lid main body.
  • a tab for the can lid provided with the other end portion extending in the opposite direction to the one end portion through the rivet, the edge of the other end portion of the tab being a flat perpendicular to the longitudinal direction of the tab.
  • FIG. 2 is a cross-sectional view taken along the line AA shown in FIG. It is a top view of a tab
  • FIG. 4 is a view taken along line BB shown in FIG. 3.
  • FIG. 4 is a rear view of the tab shown in FIG. 3. It is a principal part enlarged view explaining the state which accumulated the can lid.
  • the can lid 100 of the present embodiment is a so-called stab tub type can lid used for beverage cans, and is composed of a can lid body 1 and a tab 2 as shown in FIG.
  • the main body 1 and the tab 2 are each formed of an aluminum alloy.
  • the can lid main body 1 has a disk-shaped panel portion 10a disposed in the central portion thereof, and continues downward from the outer peripheral edge of the panel portion 10a via the corner portion 11.
  • a counter sink portion 13 that forms a ring-shaped recess 12 facing the chuck, a chuck wall portion 14 that extends from the outer peripheral edge of the counter sink portion 13 while increasing in diameter upward, and a shoulder that extends from the outer peripheral edge of the chuck wall portion 14. It is composed of a portion 15 and a curled portion 16 continuous with the shoulder portion 15.
  • a rivet 3 is formed on the upper surface of the panel portion 10 a so as to protrude from the center portion of the panel portion 10 a (can lid main body 1), and a tab 2 is attached to the rivet 3.
  • an opening piece 5 defined by the score portion 4 is formed in a portion extending in a specific radial direction from the rivet 3 on the upper surface of the panel portion 10a (on the left side of the rivet 3 in FIG. 1).
  • a finger-hanging recess 6 is formed on the opposite side (the right side of the rivet 3 in FIG. 1), and a protrusion 7 called dimple is formed between the rivet 3 and the finger-holding recess 6.
  • a concave panel deboss 10 b is formed so as to surround the opening piece 5, the finger-hanging concave portion 6, and the convex portion 7.
  • the score portion 4 includes a starting end portion 41, an arc-shaped portion 42 that is an arc-shaped initial fracture portion that substantially halves the rivet 3, a substantially elliptical intermediate portion 43, and a terminal portion 44.
  • the opening piece 5 is defined by leaving a part of the connection portion 45 to the panel portion 10 a between the start end portion 41 and the end portion 44.
  • the arc-shaped portion 42 is formed in a ring-shaped coined portion that is crushed by coining around the rivet 3.
  • the score part 4 is a double structure provided with the main score 4a which is fractured
  • the main score 4 a and the auxiliary score 4 b are connected to each other at the start end 41 and the end end 44 of the score portion 4.
  • the auxiliary score 4b is formed shallower than the adjacent main score 4a and is not broken by the pressing of the tab 2.
  • An inner bead 8 that protrudes along the score portion 4 is formed on the opening piece 5 to reinforce the opening piece 5.
  • the finger hooking recess 6 is arranged so that the fingertip is arranged below the other end portion 22 so that it can be easily pulled up. It is formed outward.
  • Two protrusions 7 protrude from the panel deboss 10 b and are formed at intervals in the width direction of the tab 2. And the outer edge part of the tab 2 is hooked on the convex part 7, and the rotation movement of the tab 2 can be prevented now.
  • the rivet 3 is formed by applying a coining process in which the periphery of the center of the panel portion 10a is pressed in a ring shape from above to project the center portion of the panel portion 10a upward.
  • the tab 2 is formed flat by cutting or cutting a metal plate such as aluminum, and is formed on the opposite side across the rivet 3 with the one end 21 disposed so as to overlap the opening piece 5.
  • the other end portion 22 is formed with a tab hole portion 23 that opens in the thickness direction of the tab 2.
  • a tongue portion 24 is formed by a U-shaped slot 24 a between one end portion 21 and the other end portion 22, and a rivet hole 25 is formed in the tongue portion 24, and the rivet 3 is inserted into the rivet hole 25.
  • the tab 2 is attached in a state where the lower surface of the tongue portion 24 is in contact with the surface of the panel deboss 10b.
  • the tab 2 is curled by bending the metal plate to the lower surface side at the entire outer peripheral edge or the inner peripheral edge of the tab hole portion 23, and the overall rigidity is enhanced.
  • the other end portion 22 of the tab 2 is formed by bending an outer peripheral edge, and a flat portion 22 a orthogonal to the longitudinal direction of the tab 2 is formed at the end edge.
  • the lower surface side is crushed and recessed in the thickness direction to form a pulling recess 22c, so that the thickness t1 is a tab as shown in FIG. 2 is thinner than the thickness of the other outer peripheral portion.
  • FIG. 6 shows a state where the can lid 100 is shifted in the circumferential direction and overlapped with the can lid 100 shown by a solid line as shown by a two-dot chain line. 2 corresponds to the can lid 100 indicated by a two-dot chain line in FIG.
  • angular part 22b is provided so that the range which overlaps with the finger rest recessed part 6 of another can lid may be included.
  • the upper surface of the corner portion 22b is recessed and formed lower
  • the thickness t2 is provided thinner than the thickness of the other outer peripheral portion
  • the lower surface of the corner portion 22b is the tab 2 It is formed on almost the same surface as the lower surface.
  • such a tab 2 is formed by sequentially forming holes formed in the tab 2 such as the tab hole portion 23 in the metal plate, and then punching the blank of the tab 2 except for the connecting piece 204 having a required width.
  • an uneven shape or the like is appropriately formed, and a curl shape is applied to the outer peripheral edge, and then the lifting concave portion 22 c and the corner portion 22 b are crushed, and finally the connecting piece 204.
  • It is formed by cutting.
  • the connecting piece 204 that connects the tabs 2 at the time of molding is provided on the side surface of the tab 2 like the tab 2 of this embodiment shown in FIG. 5, curl molding is formed in the vicinity of the connecting piece 204 of the tab 2. Therefore, the rigidity in the vicinity of the cut surface obtained by cutting the connecting piece 204 is weaker than that of the other outer peripheral portion.
  • the corner portion 22b is formed only by making the shape of a concave portion avoiding the vicinity of the cut surface of the connecting piece 204, so that the strength of the tab 2 is reduced. Without making it possible, contact between the inner surfaces of the can lids can be avoided. Further, the corner portion 22b of the tab 2 is provided so as to expand in the surface direction, and a pulling recess portion 22c formed in a concave shape from the both corner portions 22b to the central portion is provided below the flat portion 22a. The corner portion 22b serves as a guide, and the fingertip can be guided to the flat portion 22a sandwiched between the corner portions 22b, so that the finger holdability can be improved.
  • the recessed portion 22c is formed by denting the vicinity of the flat portion 22a from below to avoid the corner portion 22b formed by being recessed, the lifting recessed portion 22c and the finger are not reduced without reducing the strength of the tab 2.
  • the gap with the hanging recess 6 can be widened, and the finger holdability of the tab 2 can be improved.
  • can lids that can avoid inner surface contact when stacking can lids without damaging the finger grip of the tabs and without causing a decrease in tab strength, and for the can lids used in the can lids It can be used as a tab.
  • SYMBOLS 1 Can lid main body 2 Tab 3 Rivet 4 Score part 4a Main score 4b Auxiliary score 5 Opening piece 6 Finger hook recessed part 7 Convex part 8 Inner bead 10a Panel part 10b Panel debossed 11 Corner part 12 Annular recessed part 13 Countersink part 14 Chuck wall part 15 Shoulder portion 16 Curl portion 21 One end portion 22 Other end portion 22a Flat portion 22b Corner portion 22c Lifting recess 23 Tab hole portion 24 Tang portion 24a Slot 25 Rivet hole 41 Start end portion 42 Arc-shaped portion 43 Intermediate portion 44 End portion 45 Connection portion 100 Can Lid 204 Connecting piece

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)

Abstract

L'invention porte sur un couvercle de cannette et sur une languette utilisée pour le couvercle de cannette apte à empêcher le contact de surfaces internes lorsque des couvercles de cannettes sont empilés, sans diminuer une propriété préférable de capture avec le doigt de la languette, ni réduire la résistance de la languette. L'invention porte sur un couvercle de cannette (100) comportant un rivet (3) formé pour faire saillie à partir de la partie centrale sur la face supérieure d'un corps principal (1) de couvercle de cannette, un élément d'ouverture (5) défini par une marque, une languette (2) fixée au rivet (3), de telle sorte qu'une extrémité (21) de la languette (2) chevauche l'élément d'ouverture (5), et un renfoncement de capture avec le doigt (6) formé sur l'autre extrémité de la languette (2), l'autre extrémité de la languette (2) étant soulevée vers le haut pour presser l'élément d'ouverture (5) par l'extrémité (21), rompre la marque et ouvrir l'élément d'ouverture (5), et le bord de l'autre extrémité de la languette (2) comprenant une partie plate (22a) s'étendant perpendiculairement à la direction longitudinale de la languette (2), et des faces supérieures de coins (22b) situées aux extrémités opposées de la partie plate (22a) étant formées pour être renfoncées vers le bas.
PCT/JP2011/066737 2010-08-05 2011-07-22 Couvercle de cannette et languette pour couvercle de cannette WO2012017840A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-176058 2010-08-05
JP2010176058A JP5514665B2 (ja) 2010-08-05 2010-08-05 缶蓋及び缶蓋用タブ

Publications (1)

Publication Number Publication Date
WO2012017840A1 true WO2012017840A1 (fr) 2012-02-09

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PCT/JP2011/066737 WO2012017840A1 (fr) 2010-08-05 2011-07-22 Couvercle de cannette et languette pour couvercle de cannette

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WO (1) WO2012017840A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6009910B2 (ja) 2012-11-07 2016-10-19 昭和アルミニウム缶株式会社 缶蓋および飲料缶
JP6779043B2 (ja) * 2016-01-05 2020-11-04 ユニバーサル製缶株式会社 開缶用タブ及び缶蓋並びに缶、開缶用タブの製造方法
JPWO2023095859A1 (fr) * 2021-11-25 2023-06-01

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007126157A (ja) * 2005-11-01 2007-05-24 Asahi Breweries Ltd 開口容易缶蓋のタブおよびタブの成形方法
WO2009048832A1 (fr) * 2007-10-10 2009-04-16 Stolle Machinery Company, Llc Languette et couvercle de canette l'employant
JP2009544539A (ja) * 2006-07-24 2009-12-17 インプレス・グループ・ベスローテン・フエンノートシャップ 密閉物のタブおよびそのようなタブを製作するためのプロセス

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007126157A (ja) * 2005-11-01 2007-05-24 Asahi Breweries Ltd 開口容易缶蓋のタブおよびタブの成形方法
JP2009544539A (ja) * 2006-07-24 2009-12-17 インプレス・グループ・ベスローテン・フエンノートシャップ 密閉物のタブおよびそのようなタブを製作するためのプロセス
WO2009048832A1 (fr) * 2007-10-10 2009-04-16 Stolle Machinery Company, Llc Languette et couvercle de canette l'employant

Also Published As

Publication number Publication date
JP2012035859A (ja) 2012-02-23
JP5514665B2 (ja) 2014-06-04

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