US3406867A - Easy opening container end - Google Patents

Easy opening container end Download PDF

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Publication number
US3406867A
US3406867A US650301A US65030167A US3406867A US 3406867 A US3406867 A US 3406867A US 650301 A US650301 A US 650301A US 65030167 A US65030167 A US 65030167A US 3406867 A US3406867 A US 3406867A
Authority
US
United States
Prior art keywords
score line
line
container
rupture
starting
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.)
Expired - Lifetime
Application number
US650301A
Other languages
English (en)
Inventor
Teddy M Westphal
Frederick J Stec
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.)
Continental Can Co Inc
Original Assignee
Continental Can Co 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 Continental Can Co Inc filed Critical Continental Can Co Inc
Priority to US650301A priority Critical patent/US3406867A/en
Priority to DE19681757311 priority patent/DE1757311C3/de
Priority to AT424868A priority patent/AT283191B/de
Priority to CH811668A priority patent/CH479449A/de
Priority to NL6808976.A priority patent/NL157859B/xx
Priority to BR200254/68A priority patent/BR6800254D0/pt
Priority to BE717298D priority patent/BE717298A/xx
Priority to DK320768AA priority patent/DK124188B/da
Priority to FR1572743D priority patent/FR1572743A/fr
Application granted granted Critical
Publication of US3406867A publication Critical patent/US3406867A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D17/4011—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 for opening completely by means of a tearing tab
    • 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
    • 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
    • B65D17/34—Arrangement or construction of pull or lift tabs
    • B65D17/347—Arrangement or construction of pull or lift tabs characterised by the connection between the tab and a detachable member or portion of the container
    • 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
    • B65D2205/00—Venting means

Definitions

  • This invention relates in general to new and useful improvements in easy opening container ends, and more particularly to a novel weakening line or score line arrangement in such container ends.
  • FIGURE 1 is a plan view of a container having an Patented Oct. 22, 1968 easy opening end formed in accordance with this invention.
  • FIGURE 2 is an enlarged fragmentary vertical sectional view taken along the line 2-2 of FIGURE 1 and shows particularly the details of construction of the easy opening end.
  • FIGURE 3 is a fragmentary vertical sectional view similar to FIGURE 2 and shows an initial step in the opening of the container.
  • FIGURES 4, 5 and 6 are schematic views showing the sequence of rupture along the score lines during the opening of the container.
  • FIGURE 7 is a schematic view showing the rupture which will occur when there is initial uncontrolled rup' ture clue to differential gaseous pressures.
  • FIGURE 8 is a fragmentary plan view of another form of container end construction.
  • FIGURE 9 is an enlarged fragmentary plan view of a modified form of container end construction.
  • FIGURE 10 is an enlarged fragmentary vertical sectional view taken along the line 1010 of FIGURE 9 and shows more specifically the details of the score line arrangement of FIGURE 9.
  • FIGURE 11 is a schematic view showing the sequence of rupture along the score lines of FIGURE 9 during the opening of the container.
  • FIGURE 12 is a plan view of still another form of container end and shows the general details of the scoring formed therein.
  • FIGURE 13 is an enlarged fragmentary sectional view taken along the line 1313 of FIGURE 12 and shows the details of the scoring thereof.
  • FIGURE 14 is a schematic view showing the progressive rupture along the score lines of FIGURE 12 during the opening of the container end thereof.
  • FIGURE 15 is a fragmentary plan view of still another form of container end and shows the details of the score lines thereof.
  • FIGURE 16 is an enlarged fragmentary vertical sectional view taken along the line 1616 of FIGURE 15 and shows further the specific details of the score lines of FIGURE 15.
  • the container 20 includes a conventional container or can body 21 which has the lower end (not shown) thereof closed in the normal manner.
  • the upper end of the container body 21 is closed by means of a container end, which is generally referred to by the numeral 22.
  • the container end 22, with the exception of the easy opening feature thereof, is a conventional container end and includes an end panel 23 and a surrounding upstanding chuck wall 24 which is part of a double seam 25 securing the container end 22 to the container body 21.
  • the container end 22 is of the full opening type and has defined therein a removable panel portion 26 which comprises substantially all of the end panel 23.
  • the removable panel portion 26 is defined by a weakening line or score line assembly which is generally identified by the numeral 27.
  • the score line assembly 27 is of an interrupted configuration and includes a primary score line 28 having the ends thereof terminating short of one another in opposed relation and with there being a gap therebetween.
  • the score line assembly 27 also includes a starting score line 30 which is radially offset from the primary score line 28, which bridges the gap between the ends of the primary score line 28, and which is disposed in overlapping relation with respect to the ends of the primary score line 28.
  • the container end 22 also includes a pull tab, which is generally referred to by the numeral 31.
  • the pull tab 31 is secured to the removable panel portion 26 by means of an integral rivet 32. It is to be understood that the pull tab 31 is of the lever type and has a nose 33 which is engageable with the end panel 23 to effect the rupture thereof along the starting score line 30. It is to be understood that the construction of the pull tab 31 may vary in accordance with the particular requirements of the container end 22.
  • FIGURE 3 it will be seen that during the normal opening of the container 20, the inner end of the pull tab 31 will be elevated and the nose 33 will move downwardly to exert an opening force on the end panel 23.
  • This opening force will be sufiicient to effect rupture of the end panel along the starting score line 30, as is shown in FIGURE 5.
  • the line of rupture is identified by the numeral 34.
  • the container end 37 includes an outer attaching portion 38, which may be in the form of a double seam, and an end panel 39.
  • the end panel 39 is provided with a peripheral score line 40 which defines a removable panel portion 41 Which preferably constitutes substantially all of the end panel 39.
  • the removable panel portion 41 is provided with a pull tab, which pull tab may be identical to the aforedescribcd pull tab 31.
  • the pull tab 31 is secured to the removable panel portion 41 by means of a rivet 32.
  • the score line 40 is continuous. However, for descriptive purposes, the score line 40 may be described as including a primary score line 40a having the ends thereof terminating short of one another in opposed relation and with there being a gap therebetween.
  • the score line 40 also includes a starting score line 40b which bridges the gap between the ends of the primary score line 40a.
  • the starting score line 40b- is provided at the opposite ends thereof with radial extensions 400 which are disposed on opposite sides of the pull tab 31. If desired, the score line extensions 406 may terminate in reversely turned portions 40d.
  • the nose of the pull tab 31, which. is aligned with the starting score line 4%, will exert a sufficient downwardly directed pressure on the end panel 39 to effect the rupture thereof along the starting score line 40b.
  • the container should be packaged with the internal pressure thereof different from the external, particularly at a lower pressure than atmospheric, and there is a tendency for the uncontrolled rupture of the end panel 39 along the score line 40, it will be apparent. that due to the action of the pull tab 31 on that part of the removable panel portion 41 between the score line extensions 40c, any uncontrolled rupture of the end panel 39 will be first along the starting score line 40b and then along the score line extension 400.
  • a part 41a of the removable panel portion 41 which part is generally in the form of a flap defined by the starting score line 40b and the score line extensions 40c, will be displaced relative to the remainder of the end panel 39 and provide for the venting of the container.
  • the pull tab 31 may be pulled upwardly to tear out the removable panel portion 41 along the primary score line 40a.
  • the score line extensions 40c have been illustrated as having reversely turned ends 40d, it is to be understood that if desired the ends 40d may be eliminated. However, the configuration of the ends 40d .assures the termination of the radially inwardly tearing of the end panel 39.
  • FIGURES 9, 10 and 11 wherein a slightly modified form of the container end of FIGURE 1 is illustrated, the container end being generally referred to by the numeral 42 and being identical with the container end 22 with one minor change and one minor addition.
  • the nose 33 of the pull tab 31 is radially inwardly displaced with respect to the starting score line 30.
  • the rivet 32 is radially inwardly displaced from its position onthe container end 22.
  • a rupture initiating score line 43 which extends radially inwardly from the starting score line 30 generally normal thereto and in alignment with the pull tab 31.
  • the rupture initiating score 43 extends beneath the nose 33 of the pull tab.
  • the pull tab 31 when the pull tab 31 is initially lifted in a container opening operation, it will apply a force on the end panel 23 along the rupture initiating score line 43 with the result that initial rupture of the end panel 23 will occur substantially at the inner section of the score line 30 with the score line 43.
  • the end panel 23 will then rupture in a generally T pattern along the score lines 30 and 43 to define a generally T-shaped initial crack or rupture line 44, as is shown in FIGURE 11. Further lifting of the pull tab 31 will result in the normal opening of the container and the removal of the removable panel portion 26.
  • FIGURES 12, 13 and 14 it will be seen that there is illustrated another form of container end which is generally referred to by the numeral 52.
  • the container end 52 is secured to a conventional container, such as the container 20, by means of a double seam 53 and includes an end panel 54 which is generally surrounded by an upstanding chuck wall 55.
  • the container end 52 is of the easy opening type and includes a removable panel portion 56 which is defined by a peripheral weakening of score line 57 formed in the end panel 54 closely adjacentthe-chuck wall 55.-
  • the removable panel portion 56 is provided with a fracture resistant score 58wwhich is spaced radially inwardly of the score line -57 and' is generally concentric thereto.
  • the pull-tab is of a conventional type and is connected to the removable panel portion 56 by means of an integral rivet 61.
  • FIGURES 15 and 16 it will be'seen that there'is illustrated a further form :of container end, which isqgenerally. referred to by the numeral 72.
  • the container end 72 issubstantially identical to, the container end 52, but with one addition, ;in addition-to the score-lines 57, 58- and 63 of the container end 52,-the container end 72 has a score line. 73
  • a weakening line assembly defining a removable panel portion, said weakening line assembly comprising a primary weakening line extending substantially entirely around said removablepanel portion and having spaced ends leaving a. gap therebetween, and a starting weakening line generally bridging said gap and having ends in spaced offset relation to said primary weakening line ends, and opening means for applying a force on said panel assembly to efiect an initial rupture along said starting weakening line followed by a controlled rupture between end portions of said primary weakening line p'ull tab 60'has a nose '62- whichis engageable' with the sure in the tearing of unweakened material at the ends of said starting weakening line.
  • opening means is in the form of a pull tab anchored to said removable panel portion, extending generally through said gap and having a force applying nose disposed adjacent said starting weakening line.
  • a container end of the type including an end panel and a surrounding upstanding chuck wall, a weakening line formed in said end panel and defining a removable panel portion, said weakening line including a starting portion disposed closely adjacent said chuck wall, a pull tab secured to said removable panel portion and having a force applying nose disposed adjacent said weakening line starting portion in inwardly spaced relation thereto to provide clearance between said nose and said chuck wall, and a rupture initiating weakening line extending inwardly from said weakening line starting portion to a position underlying said nose.
  • said weakening line defining said removable panel portion is of an interrupted construction with weakening line starting portions being outwardly offset from the remainder thereof whereby uncontrolled rupture of said end panel due to difierential gaseous pressure on said removable panel portion is prevented.
  • An easy opening container end comprising an end panel, a score line assembly in said end panel defininga extending beyond the ends of said primary score line and terminating remote from said primary score line, and opening means for applying a force on said end panel to effect'initial rupture along said starting score line followed by rupture along said starting score line portions and :thereafter along said primary score line whereby uncontrolled rupture of said end panel along said score line assembly due to difierential gaseous pressure on said end panel is prevented by dissipation of a force due to the gaseous pressure in tearing thematerial of said end panel along said starting score line portion.
  • said starting score line is radially offset from said primary score line and said starting score line portions are disposed generally parallel to ends of said primary score line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Closures For Containers (AREA)
US650301A 1967-06-30 1967-06-30 Easy opening container end Expired - Lifetime US3406867A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US650301A US3406867A (en) 1967-06-30 1967-06-30 Easy opening container end
DE19681757311 DE1757311C3 (de) 1967-06-30 1968-04-24 Leicht zu öffnender Deckel für Dosen o.dgl. Behälter aus Blech
AT424868A AT283191B (de) 1967-06-30 1968-05-02 Leicht aufreißbarer Deckel für Behälter, insbesondere Dosen
CH811668A CH479449A (de) 1967-06-30 1968-05-31 Blechbehälter mit einem Deckel, der einen entfernbaren Deckelteil aufweist
NL6808976.A NL157859B (nl) 1967-06-30 1968-06-26 Deksel of eindwand voor een bus of busromp met een aan de omtrek door een scheurzone begrensd gemakkelijk verwijderbaar wanddeel.
BR200254/68A BR6800254D0 (pt) 1967-06-30 1968-06-28 Painel de facil abertura para extremidade de um recipient
BE717298D BE717298A (en:Method) 1967-06-30 1968-06-28
DK320768AA DK124188B (da) 1967-06-30 1968-06-28 Dåseende til let åbning.
FR1572743D FR1572743A (en:Method) 1967-06-30 1968-06-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US650301A US3406867A (en) 1967-06-30 1967-06-30 Easy opening container end

Publications (1)

Publication Number Publication Date
US3406867A true US3406867A (en) 1968-10-22

Family

ID=24608321

Family Applications (1)

Application Number Title Priority Date Filing Date
US650301A Expired - Lifetime US3406867A (en) 1967-06-30 1967-06-30 Easy opening container end

Country Status (8)

Country Link
US (1) US3406867A (en:Method)
AT (1) AT283191B (en:Method)
BE (1) BE717298A (en:Method)
BR (1) BR6800254D0 (en:Method)
CH (1) CH479449A (en:Method)
DK (1) DK124188B (en:Method)
FR (1) FR1572743A (en:Method)
NL (1) NL157859B (en:Method)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478918A (en) * 1968-08-14 1969-11-18 American Can Co Full open end closure
US3501046A (en) * 1968-08-02 1970-03-17 Continental Can Co Pull tab configuration
US20070262079A1 (en) * 2006-05-10 2007-11-15 Alexandre Paris Opening device
US20080110887A1 (en) * 2006-10-31 2008-05-15 Christopher Paul Ramsey Resealable closure
US20090173737A1 (en) * 2007-11-09 2009-07-09 Crown Packaging Technology, Inc. Resealable beverage can end and methods relating to same
US20100294768A1 (en) * 2009-05-22 2010-11-25 Crown Packaging Technology, Inc. resealable beverage can ends
US20110233227A1 (en) * 2006-10-31 2011-09-29 Alexandre Paris Resealable closure
US8336725B2 (en) 2005-09-23 2012-12-25 Crown Packaging Technology, Inc. Sealing device for a container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1005004A (en) * 1972-09-28 1977-02-08 Reynolds Metals Company Easy-open wall

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366270A (en) * 1966-05-27 1968-01-30 Continental Can Co Pull tab for easy opening can end

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366270A (en) * 1966-05-27 1968-01-30 Continental Can Co Pull tab for easy opening can end

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501046A (en) * 1968-08-02 1970-03-17 Continental Can Co Pull tab configuration
US3478918A (en) * 1968-08-14 1969-11-18 American Can Co Full open end closure
US8336725B2 (en) 2005-09-23 2012-12-25 Crown Packaging Technology, Inc. Sealing device for a container
US7918359B2 (en) 2006-05-10 2011-04-05 Crown, Packaging Technology, Inc. Opening device
US20070262079A1 (en) * 2006-05-10 2007-11-15 Alexandre Paris Opening device
US20090179033A1 (en) * 2006-05-10 2009-07-16 Crown Packaging Technology , Inc. Can opening device
US8240498B2 (en) 2006-10-31 2012-08-14 Crown Packaging Technology, Inc. Resealable closure
US20110233227A1 (en) * 2006-10-31 2011-09-29 Alexandre Paris Resealable closure
US20080110887A1 (en) * 2006-10-31 2008-05-15 Christopher Paul Ramsey Resealable closure
US20090173737A1 (en) * 2007-11-09 2009-07-09 Crown Packaging Technology, Inc. Resealable beverage can end and methods relating to same
US8336726B2 (en) 2007-11-09 2012-12-25 Crown Packaging Technology, Inc. Resealable beverage can end and methods relating to same
US8931656B2 (en) 2007-11-09 2015-01-13 Crown Packaging Technology, Inc. Resealable beverage can end and methods relating to same
US20100294768A1 (en) * 2009-05-22 2010-11-25 Crown Packaging Technology, Inc. resealable beverage can ends
US8833585B2 (en) 2009-05-22 2014-09-16 Crown Packaging Technology, Inc. Resealable beverage can ends

Also Published As

Publication number Publication date
DE1757311A1 (de) 1971-04-08
NL157859B (nl) 1978-09-15
AT283191B (de) 1970-07-27
DE1757311B2 (de) 1976-02-12
BR6800254D0 (pt) 1973-02-06
BE717298A (en:Method) 1968-12-02
DK124188B (da) 1972-09-25
FR1572743A (en:Method) 1969-06-27
NL6808976A (en:Method) 1968-12-31
CH479449A (de) 1969-10-15

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