[go: up one dir, main page]

WO2012174058A1 - Procédés et système pour la formation de couvercles de canette de boisson à haute résistance, en un alliage d'aluminium et de magnésium, et couvercles de canettes ainsi obtenus - Google Patents

Procédés et système pour la formation de couvercles de canette de boisson à haute résistance, en un alliage d'aluminium et de magnésium, et couvercles de canettes ainsi obtenus Download PDF

Info

Publication number
WO2012174058A1
WO2012174058A1 PCT/US2012/042167 US2012042167W WO2012174058A1 WO 2012174058 A1 WO2012174058 A1 WO 2012174058A1 US 2012042167 W US2012042167 W US 2012042167W WO 2012174058 A1 WO2012174058 A1 WO 2012174058A1
Authority
WO
WIPO (PCT)
Prior art keywords
degrees
approximately
inclined wall
point
wall angle
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2012/042167
Other languages
English (en)
Inventor
Darin CLARK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crown Packaging Technology Inc
Original Assignee
Crown Packaging Technology Inc
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 Crown Packaging Technology Inc filed Critical Crown Packaging Technology Inc
Priority to AU2012271811A priority Critical patent/AU2012271811A1/en
Publication of WO2012174058A1 publication Critical patent/WO2012174058A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps

Definitions

  • This application relates to metal packaging, and more particular to aluminum beverage can ends and seamed cans.
  • the beverage can industry has specification for various parameters, such as a burst strength requirement of an average of 90 psi and a minimum of 85 psi.
  • High strength beverage end shells formed in high speed, commercial production of an aluminum alloy having a specific range of constituents, especially magnesium within a specific range, are disclosed.
  • a method of forming a high strength can end in commercial quantities comprises the steps of (i) providing from a coil a sheet of an aluminum alloy having between 3.0% and 4.5% magnesium; (ii) forming high strength beverage end shells from the aluminum alloy coil in a shell press operating at least at 180 strokes per minute to produce 4140 shells per minute; (iii) whereby, when the seamed can ends are fully aged, the aged ends satisfy a burst pressure specification of a minimum of at least 80 psi and an average of at least 90 psi.
  • High strength ends include modern, commercially available ends and their variants.
  • the aluminum alloy has between 3.5% and 4.5% magnesium.
  • the ends may be configured such that the aged seamed ends satisfy a burst pressure specification of a minimum of at least 85 psi, especially wherein the burst pressure specification requires substantially all the aged seams end to satisfy the minimum burst pressure requirement and/or satisfaction of the burst pressure specification requires commercial acceptance by a beverage company.
  • the structure of the shell includes a center panel, a cover hook, and an inclined wall located between the center panel and a peripheral curl, the inclined wall is inclined at an inclined wall angle of at least 20 degrees from vertical.
  • the structure of the shell preferably includes a countersink bead extending between the center panel and the inclined wall.
  • the inclined wall is a multipart wall that extends between the countersink bead and the peripheral curl.
  • the inclined wall preferably includes an upper portion and a lower portion that are joined at a juncture, the upper portion is defined between a first point at an innermost point of the peripheral curl and the juncture, and the lower portion is defined between the juncture and a second point that is defined by an intersection of a horizontal projection from the plane of the center panel with the inclined wall or outer wall of the countersink bead.
  • the inclined wall angle may be measured between the first point and the second point, such that a lower wall angle measured between the second point and the juncture is at least 28 degrees, preferably the inclined wall angle is between approximately 23 degrees and approximately 60 degrees and the lower wall angle is between approximately 32 degrees and approximately 55 degrees, and more preferably the inclined wall angle is between approximately 25 degrees and approximately 60 degrees and the lower wall angle is between approximately 34 degrees and approximately 53 degrees.
  • the lower wall angle measured between the second point and the juncture preferably is at least 33 degrees.
  • This inclined wall angle preferably is between approximately 23 degrees and approximately 60 degrees and the lower wall angle is between approximately 34 degrees and approximately 53 degrees.
  • the present invention encompasses a system for manufacturing beverage end shells in commercial quantities from a coil of aluminum alloy sheet, comprising (i) a shell press operating at least at 180 strokes per minute producing at least 4140 beverage end shells per minute; (ii) each shell: including a center panel, a cover hook, and an inclined wall located between the center panel and a peripheral curl, the inclined wall is inclined at an inclined wall angle of at least 20 degrees from vertical; and is formed of an aluminum alloy having between 3.0% and 4.5% magnesium; (iii) whereby, when the seamed can ends are fully aged, the aged ends satisfy a burst pressure specification of a minimum of at least 80 psi and an average of at least 90 psi.
  • the aluminum alloy has between 3.5% and 4.5% magnesium.
  • the structure preferably includes a countersink bead extending between the center panel and the inclined wall.
  • the inclined wall may be a multipart wall that extends between the countersink bead and the peripheral curl.
  • the inclined wall includes an upper portion and a lower portion that are joined at a juncture, the upper portion is defined between a first point at an innermost point of the peripheral curl and the juncture, and the lower portion is defined between the juncture and a second point that is defined by an intersection of a horizontal projection from the plane of the center panel with the inclined wall or outer wall of the countersink bead.
  • the inclined wall angle may be measured between the first point and the second point such that it is at least 28 degrees.
  • the inclined wall angle is between approximately 23 degrees and approximately 60 degrees and the lower wall angle is between approximately 32 degrees and approximately 55 degrees. More preferably, the inclined wall angle is between approximately 25 degrees and approximately 60 degrees and the lower wall angle is between approximately 34 degrees and approximately 53 degrees.
  • the lower wall angle measured between the second point and the juncture such preferably is at least 33 degrees.
  • the inclined wall angle is between approximately 23 degrees and approximately 60 degrees and the lower wall angle is between approximately 34 degrees and approximately 53 degrees.
  • the present invention also encompasses plural beverage can end shells formed in a commercial shell press operating at least at 180 strokes per minute and at least 4140 shells per minute.
  • Each one of the plural shells comprises (i) a center panel, a cover hook, and an inclined wall located between the center panel and a peripheral curl, the inclined wall is inclined at an inclined wall angle of at least 20 degrees from vertical; (ii) the shell formed of an aluminum alloy having between 3.0% and 4.5% magnesium; (iii) whereby, when the seamed can ends are fully aged, the aged ends satisfy a burst pressure specification of a minimum of at least 80 psi and an average of at least 90 psi.
  • the aluminum alloy has between 3.5% and 4.5% magnesium.
  • the structure of the end shells preferably includes a countersink bead extending between the center panel and the inclined wall.
  • the inclined wall may be a multipart wall that extends between the countersink bead and the peripheral curl.
  • the inclined wall thus includes an upper portion and a lower portion that are joined at a juncture, the upper portion is defined between a first point at an innermost point of the peripheral curl and the juncture, and the lower portion is defined between the juncture and a second point that is defined by an intersection of a horizontal projection from the plane of the center panel with the inclined wall or outer wall of the countersink bead.
  • the inclined wall angle may be measured between the first point and the second point.
  • a lower wall angle may be measured between the second point and the juncture such that it is at least 28 degrees.
  • the inclined wall angle is between approximately 23 degrees and approximately 60 degrees and the lower wall angle is between approximately 32 degrees and approximately 55 degrees. More preferably the inclined wall angle is between approximately 25 degrees and approximately 60 degrees and the lower wall angle is between approximately 34 degrees and approximately 53 degrees.
  • the lower wall angle measured between the second point and the juncture may be at least 33 degrees.
  • the inclined wall angle preferably is between approximately 23 degrees and approximately 60 degrees and the lower wall angle is between approximately 34 degrees and approximately 53 degrees.
  • Figure 1 is a flow chart showing the shell making processes
  • Figure 2 is a cross sectional diagram of an example high strength end shell.
  • 5042 aluminum alloy is also widely widely used.
  • 5042 aluminum has the following constituents:
  • SuperEnd end shells can be made from 5042 alloy, even though the end shells would like end shells made from 0.0082 inch thick 5042 alloy have an average buckle pressure of only about 85 psi when aging is simulated by heating the seamed ends at 90 degrees C for 30 minutes. Buckle strength was determined by seaming aged ends onto cans, then pressurizing the can incrementally. A gauge records the pressure at the point of failure.
  • 5182 alloy had the best combination of strength and ductility.
  • 5182 alloy has proven to be sufficiently brittle such that the score about the tear panel would consistently propagate all the way around the tear panel.
  • brittle material was a benefit to the opening process. Sufficiently brittleness to enhance opening has become even more important as the beverage industry has converged on large opening, oval ends, which inherently are more difficult to open compared with smaller, round opening ends.
  • An aluminum alloy that the inventor surmises provides an optimum combination of ductility (that is, brittleness) for good score propagation, strength for burst pressure resistance, and cost by reducing the amount of magnesium and other elements that promote strength is provided by an aluminum alloy provided below:
  • the magnesium content would be approximately 4.0 percent.
  • a system 110 includes a conventional shell press 120 that includes multiple (conventional) tools for forming multiple shells 140 per stroke.
  • Most commercial shell press machines operate at least at 180 strokes per minute and have a minimum of 23 or 24 tools such that each stroke produces shells at a rate of at least 4140 shells per minute.
  • Shell press 120 may be any commercial press, such as produced by Stolle Machinery, Inc.
  • Shells 140 are conveyed to a conventional conversion press, such as produced by Minter Machine Company, where a tab is applied.
  • a first example of a high strength can end is a SuperEnd can end shell 10a, as provided by Crown Cork & Seal Company and shown in Figure 2. End shell 10a, a center panel 12a, a countersink bead 14a, an inclined wall 16a, and a peripheral curl 18a. Center panel 12a merges into inner wall 30a of the countersink bead 14a at a transition 30a.
  • An arcuate bottom 34a extends downwardly from a lower portion of inner wall 30a.
  • An outer wall 36a of bead 14 a extends upwardly from an outermost portion of bottom 34a.
  • Wall 16a includes a lower wall 42a and an upper wall 44a. As shown in the figure, lower wall 42a extends from an uppermost portion of bead outer wall 34a and joins upper wall 44a at a juncture 46a.
  • Peripheral curl 18a includes a seaming panel 60a and a cover hook 62a.
  • a first point 48a is defined at the junction of the uppermost end of upper wall 44a with the innermost end of seaming panel 60a or peripheral curl 18a.
  • a second point 50a is defined where a horizontal line L is extended from the plane of center panel 12a to intersect with wall 16a. For measuring other high strength end shells, the first point, juncture (if any), and second point may be defined as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Apparatus For Making Beverages (AREA)
  • Cookers (AREA)
  • Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
  • Table Devices Or Equipment (AREA)

Abstract

L'invention concerne des ébauches (10a) de couvercles de canettes de boisson à haute résistance formées en fabrication industrielle à vitesse élevée d'un alliage d'aluminium ayant une plage spécifique de constituants, notamment ayant entre 3,0 % et 4,5 % de magnésium.
PCT/US2012/042167 2011-06-14 2012-06-13 Procédés et système pour la formation de couvercles de canette de boisson à haute résistance, en un alliage d'aluminium et de magnésium, et couvercles de canettes ainsi obtenus Ceased WO2012174058A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2012271811A AU2012271811A1 (en) 2011-06-14 2012-06-13 Methods and system for forming high-strength beverage can ends of aluminum magnesium alloy and such can ends

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161496624P 2011-06-14 2011-06-14
US61/496,624 2011-06-14

Publications (1)

Publication Number Publication Date
WO2012174058A1 true WO2012174058A1 (fr) 2012-12-20

Family

ID=46319912

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/042167 Ceased WO2012174058A1 (fr) 2011-06-14 2012-06-13 Procédés et système pour la formation de couvercles de canette de boisson à haute résistance, en un alliage d'aluminium et de magnésium, et couvercles de canettes ainsi obtenus

Country Status (4)

Country Link
US (1) US20130008910A1 (fr)
AU (1) AU2012271811A1 (fr)
SA (1) SA112330612B1 (fr)
WO (1) WO2012174058A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12268664B1 (en) 2008-03-28 2025-04-08 Neurelis, Inc. Administration of benzodiazepine compositions

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4448322A (en) * 1978-12-08 1984-05-15 National Can Corporation Metal container end
US5331836A (en) * 1987-10-05 1994-07-26 Reynolds Metals Company Method and apparatus for forming can ends
WO1995011099A1 (fr) * 1993-10-21 1995-04-27 Stodd Ralph P Appareil de production de coquilles de recipients
WO1996037414A1 (fr) * 1995-05-24 1996-11-28 Carnaudmetalbox Plc Extremite de boite metallique et procede permettant de la fixer sur un corps de boite metallique
WO2001041948A2 (fr) * 1999-12-08 2001-06-14 Metal Container Corporation Fermeture de couvercle de canette et procede d"assemblage d"une fermeture de couvercle de canette a un corps de canette
US20030121920A1 (en) * 2001-12-27 2003-07-03 Zonker Harry R. Metal end shell and easy opening can end for beer and beverage cans
US7100789B2 (en) 1999-12-08 2006-09-05 Ball Corporation Metallic beverage can end with improved chuck wall and countersink
US7370774B2 (en) 2002-04-22 2008-05-13 Crown Cork & Seal Technologies Can end
US7591392B2 (en) 2002-04-22 2009-09-22 Crown Packaging Technology, Inc. Can end
US20100089116A1 (en) * 2008-10-09 2010-04-15 Container Development, Ltd. Method and apparatus for forming a can shell
US7819275B2 (en) 2001-07-03 2010-10-26 Container Development, Ltd. Can shell and double-seamed can end

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843014A (en) * 1973-03-16 1974-10-22 Pechiney Ugine Kuhlmann Container cover
GB9204972D0 (en) * 1992-03-06 1992-04-22 Cmb Foodcan Plc Laminated metal sheet
GB9702475D0 (en) * 1997-02-07 1997-03-26 Metal Box Plc Can ends
US5932798A (en) * 1998-06-29 1999-08-03 Sonoco Development, Inc. Can strength and leakage test device
US20030062370A1 (en) * 1999-02-10 2003-04-03 Ball Melville Douglas Can with peelably bonded closure

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4448322A (en) * 1978-12-08 1984-05-15 National Can Corporation Metal container end
US5331836A (en) * 1987-10-05 1994-07-26 Reynolds Metals Company Method and apparatus for forming can ends
WO1995011099A1 (fr) * 1993-10-21 1995-04-27 Stodd Ralph P Appareil de production de coquilles de recipients
WO1996037414A1 (fr) * 1995-05-24 1996-11-28 Carnaudmetalbox Plc Extremite de boite metallique et procede permettant de la fixer sur un corps de boite metallique
US6065634A (en) 1995-05-24 2000-05-23 Crown Cork & Seal Technologies Corporation Can end and method for fixing the same to a can body
WO2001041948A2 (fr) * 1999-12-08 2001-06-14 Metal Container Corporation Fermeture de couvercle de canette et procede d"assemblage d"une fermeture de couvercle de canette a un corps de canette
US7100789B2 (en) 1999-12-08 2006-09-05 Ball Corporation Metallic beverage can end with improved chuck wall and countersink
US7819275B2 (en) 2001-07-03 2010-10-26 Container Development, Ltd. Can shell and double-seamed can end
US20030121920A1 (en) * 2001-12-27 2003-07-03 Zonker Harry R. Metal end shell and easy opening can end for beer and beverage cans
US7370774B2 (en) 2002-04-22 2008-05-13 Crown Cork & Seal Technologies Can end
US7591392B2 (en) 2002-04-22 2009-09-22 Crown Packaging Technology, Inc. Can end
US20100089116A1 (en) * 2008-10-09 2010-04-15 Container Development, Ltd. Method and apparatus for forming a can shell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12268664B1 (en) 2008-03-28 2025-04-08 Neurelis, Inc. Administration of benzodiazepine compositions

Also Published As

Publication number Publication date
SA112330612B1 (ar) 2015-07-09
AU2012271811A1 (en) 2013-05-02
US20130008910A1 (en) 2013-01-10

Similar Documents

Publication Publication Date Title
US10246218B2 (en) Necked beverage can having a seamed-on end
CN103237737B (zh) 一种降低了厚度规格的瓶盖
JP5597333B2 (ja) 金属ボトル缶およびその製造方法
CA2472295C (fr) Extremite de canette de boisson metallique avec paroi d'appui et fraisure ameliorees
EP3656482B1 (fr) Dispositif de fermeture d'extrémité à rayon de panneau matricé et décrochement de reformation
JP2012192984A5 (fr)
TW202330954A (zh) 飲料食品用罐蓋
CA2905294A1 (fr) Boite aerosol emboutie et etiree
US6425721B1 (en) Method of forming a safety can end
WO2001089737A1 (fr) Procede de realisation d'une partie d'extremite de securite de boite de conserve
JP2007153376A (ja) アルミニウム合金製小容量ネジ付き缶
WO2012174058A1 (fr) Procédés et système pour la formation de couvercles de canette de boisson à haute résistance, en un alliage d'aluminium et de magnésium, et couvercles de canettes ainsi obtenus
JP2016520026A (ja) 弓状のパネル壁及び湾曲した遷移壁を有する飲料缶端部
CN220905659U (zh) 一种碗罐
CA2979582A1 (fr) Corps de boite
US11167906B2 (en) Dome formation profile and method of lightweight container design and manufacture
JP2001294251A (ja) キャップ付き金属容器及びその製造方法
JP6576047B2 (ja) 缶蓋
JP2016084144A (ja) 缶エンドおよびこれを用いた缶
JP4961253B2 (ja) 包装容器用蓋
CN117000897A (zh) 采用金属薄板制作碗形包装容器方法
KR20040059946A (ko) 내압강도가 우수한 경량 스틸 2 피스 디앤아이 캔 제조방법
JP2019112075A (ja) ボトル缶の製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12728357

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2012271811

Country of ref document: AU

Date of ref document: 20120613

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12728357

Country of ref document: EP

Kind code of ref document: A1