WO2013090235A3 - Easy-open metal end for a container, and method for making same - Google Patents

Easy-open metal end for a container, and method for making same Download PDF

Info

Publication number
WO2013090235A3
WO2013090235A3 PCT/US2012/068886 US2012068886W WO2013090235A3 WO 2013090235 A3 WO2013090235 A3 WO 2013090235A3 US 2012068886 W US2012068886 W US 2012068886W WO 2013090235 A3 WO2013090235 A3 WO 2013090235A3
Authority
WO
WIPO (PCT)
Prior art keywords
score line
coining
easy
metal end
making same
Prior art date
Application number
PCT/US2012/068886
Other languages
French (fr)
Other versions
WO2013090235A2 (en
Inventor
David K. DUNN
John Meeks
Original Assignee
Sonoco Development, 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 Sonoco Development, Inc. filed Critical Sonoco Development, Inc.
Publication of WO2013090235A2 publication Critical patent/WO2013090235A2/en
Publication of WO2013090235A3 publication Critical patent/WO2013090235A3/en

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
    • B21D51/383—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures scoring lines, tear strips or pulling tabs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Abstract

An easy-open metal end and a method for making same, in which a pre-score coining operation is performed, followed by an operation to form a score line. The coining step uses gentle-radius tooling designed not to crack or cut a protective coating on the metal end. Between the coining step and the score line-forming step, a paneling step is performed to pull out the loose metal generated in the coining step, such that end tension can be controlled more easily than in a conventional process. The coining operation thins the metal, so the score line can have less penetration than, and therefore can be narrower than, a conventional score line. Consequently, even if the score line does rust, it will be very small in width and thus relatively unnoticeable.
PCT/US2012/068886 2011-12-12 2012-12-11 Easy-open metal end for a container, and method for making same WO2013090235A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/316,769 2011-12-12
US13/316,769 US20130146597A1 (en) 2011-12-12 2011-12-12 Easy-Open Metal End for a Container, and Method for Making Same

Publications (2)

Publication Number Publication Date
WO2013090235A2 WO2013090235A2 (en) 2013-06-20
WO2013090235A3 true WO2013090235A3 (en) 2013-09-12

Family

ID=47553382

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/068886 WO2013090235A2 (en) 2011-12-12 2012-12-11 Easy-open metal end for a container, and method for making same

Country Status (2)

Country Link
US (1) US20130146597A1 (en)
WO (1) WO2013090235A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104128525B (en) * 2014-07-28 2016-10-05 广东英联包装股份有限公司 A kind of catsup can easy open cover production technology and equipment thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687099A (en) * 1969-01-10 1972-08-29 Metal Box Co Ltd Scoring metal container components
US3964633A (en) * 1973-01-22 1976-06-22 National Can Corporation Full open end
US3990376A (en) * 1973-02-28 1976-11-09 Ermal C. Fraze Easy opening container wall
US4122791A (en) * 1977-06-30 1978-10-31 Dayton Reliable Tool & Manufacturing Company Method and apparatus for scoring an enameled metal surface

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687099A (en) * 1969-01-10 1972-08-29 Metal Box Co Ltd Scoring metal container components
US3964633A (en) * 1973-01-22 1976-06-22 National Can Corporation Full open end
US3990376A (en) * 1973-02-28 1976-11-09 Ermal C. Fraze Easy opening container wall
US4122791A (en) * 1977-06-30 1978-10-31 Dayton Reliable Tool & Manufacturing Company Method and apparatus for scoring an enameled metal surface

Also Published As

Publication number Publication date
US20130146597A1 (en) 2013-06-13
WO2013090235A2 (en) 2013-06-20

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