US3315837A - Easy opening end - Google Patents

Easy opening end Download PDF

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Publication number
US3315837A
US3315837A US413938A US41393864A US3315837A US 3315837 A US3315837 A US 3315837A US 413938 A US413938 A US 413938A US 41393864 A US41393864 A US 41393864A US 3315837 A US3315837 A US 3315837A
Authority
US
United States
Prior art keywords
tear strip
end panel
score lines
tearing
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
US413938A
Other languages
English (en)
Inventor
Arnold R Boik
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 US413938A priority Critical patent/US3315837A/en
Priority to AT435965A priority patent/AT257456B/de
Priority to BE666085D priority patent/BE666085A/xx
Priority to GB32979/65A priority patent/GB1045670A/en
Priority to FR30651A priority patent/FR1446591A/fr
Priority to CH1358765A priority patent/CH429481A/fr
Priority to NL656515300A priority patent/NL151950B/xx
Priority to US614077A priority patent/US3426714A/en
Application granted granted Critical
Publication of US3315837A publication Critical patent/US3315837A/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
    • B65D17/4012—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 partially 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
    • B65D17/30—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 using cutting devices

Definitions

  • a further object of this invention is to provide a novel can end of the easy opening type which includes a removable tear strip defined by score lines and wherein the tear strip has attached thereto a pull tab for eflecting the rupture of the end panel and the tearing of the tear strip therefrom, the tear strip having a central portion thereof adjacent the connection thereof with the pull tab outwardly displaced to define a longitudinally extending groove with the material displaced from the tear strip central portion being flowed into the spaces of the score lines so as to reduce the cross sections of the score lines whereby the resistance of the end panel to tearing is increased and at the same time the resistance of the tear strip to transverse folding is decreased.
  • FIGURE 1 is a fragmentary top perspective view of a can formed in accordance with this invention.
  • FIGURE 2 is an enlarged fragmentary plan view of the can of FIGURE 1 and shows the specific easy opening details of the can end closing the upper end thereof.
  • FIGURE 3 is an enlarged fragmentary plan view of that portion of the can end which has been worked upon in accordance with this invention and shows the specific details thereof.
  • FIGURE 4 is an enlarged fragmentary vertical sectional view taken transversely of the tear strip through the can end only and shows the specific details of the cross section of the can end through the tear strip area.
  • FIGURE 5 is an enlarged fragmentary vertical sectional view taken through the upper part of the can of FIGURE 1 and shows the manner in which the starting end portion of the tear strip folds after the initial tearing thereof from the end panel occurs and the tearing reaches the affected area.
  • the can 10 includes a can body 11 of a conventional construction which has the lower end thereof closed in the normal manner either by an integral end or an end separately secured thereto, neither of the ends being illustrated.
  • the upper end of the can body 11 is closed by means of an easy opening end, generally referred to be the numeral 12, the can end 12 being secured to the can body 11 by means of a conventional double seam 13.
  • the can end 12 includes an end panel 14 in which there are formed score lines 15 and 16 which are separately referred to, but which may be continuous.
  • the score lines 15 and 16 define a tear strip 17 which is removable in the opening of the can 10.
  • the tear strip 17, as is clearly shown in FIGURE 5, has a starting end portion 18 which is provided with an integral rivet 19 by means of which a pull tab 20 is secured to the tear strip 17.
  • the above described features of the can end 12 are well known and are used at the present time in the packaging of beverages, particularly beer, which are packed under a gaseous pressure. Such a beverage is shown in FIGURE 5 and is referred to by the numeral 21.
  • a can of the type described hereinabove is opened, a relatively great force is applied to the free end of the pull tab 20 to elfect the initial rupture of the end panel 14 along the score lines 15 and 16.
  • the resistance to rupture of the end panel about the starting end portion of the tear strip 17 clearly reduces with the result that there is an immediate upward movement of the starting end portion 18 of the tear strip 17 before the force applied to the pull tab 20 can be reduced.
  • that portion of the tear strip 17 which is disposed adjacent the rivet 19 is worked upon to define a longitudinally extending recess 24, as is clearly shown in FIGURES 3 and 4.
  • a suitable punch is utilized to form the recess 24. Since the recess 24 requires a displacement of the metal of the tear strip 17, and since the recess 24 extends longitudinally of the tear strip 17, it will be readily apparent that a major portion of the flow of the displaced metal will be transversely of the tear strip 17 into the spaces resulting from the formation of the score lines 15 and 16.
  • the flowed metal is clearly shown in FIGURE 4 and is referred to by the numeral 25.
  • each score line 15 and 16 is materially decreased, thereby greatly reducing the cross section of the score lines 15 and 16 adjacent the longitudinal recess 24.
  • This abrupt reduction in cross section of the score lines 15 and 16 provides for an abrupt resistance to the tearing of the tear strip 17 from the end panel 14. In this manner, the chances of an accidental uncontrolled tearing of the tear strip 17 from the end panel 14 are greatly reduced.
  • the tear strip 17 may then be removed in the customary manner without any uncontrolled tearing or blow-out thereof.
  • the tear strip 17 has an enlarged portion 26 disposed adjacent the outer periphery of the can end 12. This portion of the tear strip 17, when removed, defines a pouring portion of an opening in the can end 12.
  • the end panel 14 is provided with a pair of ribs 27 and 28 which extend along the outer portion of the tear strip 17. These ribs 27 also reinforce the end panel 14. It is to be noted that the ribs 27 and 28 start at points transversely aligned with the recess 24 and the flowed metal 25. Thus, there is a reinforcement of the end panel 14 adjacent the point where the resistance to the tearing of the end panel is increased and the resistance to bending of the tear strip is decreased.
  • a can end particularly adapted for use with products packaged under gaseous pressure comprising an end panel having score lines defining a removable tear strip, said tear strip having a starting end portion to which pull means are attached, and said end panel having the appearance of having been reshaped adjacent said pull means with portions of said score lines having the appearance of having been reformed to provide for a greater resistance to tearing of said tear strip from said end panel adjacent said starting end portion whereby uncontrolled tearing and blow-out of said tear strip from said end panel after the initial rupture of said end panel due to gaseous pressure on said tear strip is prevented.
  • a can end particularly adapted for use with products packaged under gaseous pressure said can end comprising an end panel having score lines defining a removable tear strip, said tear strip having a starting end portion to which pull means are attached, and an intermediate portion of said tear strip having the appearance of having been reshaped adjacent said pull means with portions of said score lines having the appearance of having been re-formed to provide for a greater resistance to tearing of said tear strip from said end panel adjacent said starting end portion whereby uncontrolled tearing and blow-out of said tear strip from said end panel after the initial rupture of said end panel due to gaseous pressure on said tear strip is prevented.
  • a can end particularly adapted for use with products packaged under gaseous pressure comprising an end panel having score lines defining a removable tear strip, said tear strip having a starting end portion to which pull means are attached, and an intermediate portion of said tear strip having been displaced transversely outwardly with the material of said tear strip partially filling the spaces defined by said score lines to locally increase the resistance to tear of said end panel along said score lines whereby uncontrolled tearing and blo w-out of said tear strip from said end panel after the initial rupture of said end panel due to gaseous pressure on said tear strip is prevented.
  • a can end particularly adapted for use with products packaged under gaseous pressure comprising an end panel having score lines defining a removable tear strip, said tear strip having a starting end portion to which pull means are attached, and an intermediate portion of said tear strip adjacent said pull means having a centrally located longitudinal groove with the material of said tear strip displaced in the forming of said groove having reshaped transversely adjacent portions of said score lines to locally increase the resistance to tear of said end panel along said score lines whereby uncontrolled tearing and blow-out of said tear strip from said end panel after the initial rupture of said end panel due to gaseous pressure on said tear strip is prevented.
  • a can end particularly adapted for use with products packaged under gaseous pressure said can end comprising an end panel having score lines defining a removable tear strip, said tear strip having a starting end portion to which pull means are attached, and an intermediate portion of said tear strip adjacent said pull means having a centrally located longitudinal groove with the material of said tear strip displaced in the forming of said groove having reshaped transversely adjacent portions of said score lines to locally increase the resistance to tear of said end panel along said score lines, and the transverse section of said tear strip being locally reduced to decrease the resistance of said tear strip to bending whereby uncontrolled tearing and blow-out of said tear strip from said end panel after the initial rupture of said end panel due to gaseous pressure on said tear strip is prevented.
  • a can end particularly adapted for use with products packaged under gaseous pressure said can end comprising an end panel having a weakening line defining a tear strip which is removable in the opening of an associated can, said tear strip including an end portion having a starting terminal part to which pull means are attached, said tear strip end portion having means adjacent said starting terminal part for effecting transverse bending of said tear strip end portion in response to tearing pressure exerted on said starting terminal part after the starting terminal part has been turn away from said end panel whereby uncontrolled tearing and blow-out of said tear strip from said end panel due to gaseous pressure thereon is prevented.
  • a can end particularly adapted for use with products packaged under gaseous pressure comprising an end panel having a weakening line defining a tear strip which is removable in the opening of an associated can, said tear strip including an end portion having a starting terminal part, said starting terminal part including an attaching fiastener securing a pull tab to said tear strip, said tear strip end portion having means adjacent said attaching fastener for elfecting transverse bending of said tear strip end portion in response to tearing pressure exerted on said starting terminal part after the starting terminal part has been torn away from said end panel whereby uncontrolled tearing and blow-out of said tear strip from said end panel due to gaseous pressure thereon is prevented.
  • a package comprising a can body having opposite ends thereof closed by can ends, and a liquid packaged within said can under gaseous pressure, one of said can ends being adapted to be uppermost when said package is opened and being of an easy opening type, said one can end including an end panel having score lines therein defining a tear strip removable from said end panel to form a dispensing opening, said tear strip having an end portion including a starting terminal part bearing a rivet, a pull tab secured to said tear strip by said rivet and said tear strip having a line of weakening adjacent said rivet for eifecting the transverse bending of said tear strip in response to tearing pressure exerted on said starting terminal part after the starting terminal part has been torn away from said end panel whereby uncontrolled tearing and blow-out of said tear strip from said end panel due to gaseous pressure thereon is prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
US413938A 1964-11-25 1964-11-25 Easy opening end Expired - Lifetime US3315837A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US413938A US3315837A (en) 1964-11-25 1964-11-25 Easy opening end
AT435965A AT257456B (de) 1964-11-25 1965-05-13 Leicht zu öffnender Behälterdeckel
BE666085D BE666085A (fr) 1964-11-25 1965-06-29
GB32979/65A GB1045670A (en) 1964-11-25 1965-08-02 Improvements in or relating to containers of the easy opening kind
FR30651A FR1446591A (fr) 1964-11-25 1965-09-07 Boîte de conserve à ouverture facile
CH1358765A CH429481A (fr) 1964-11-25 1965-10-01 Boîte à ouverture facile et procédé pour sa fabrication
NL656515300A NL151950B (nl) 1964-11-25 1965-11-25 Eindwand voor een bus of dergelijk reservoir.
US614077A US3426714A (en) 1964-11-25 1967-02-06 Method of forming blow-off resistant easy opening beverage can

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US413938A US3315837A (en) 1964-11-25 1964-11-25 Easy opening end

Publications (1)

Publication Number Publication Date
US3315837A true US3315837A (en) 1967-04-25

Family

ID=23639280

Family Applications (1)

Application Number Title Priority Date Filing Date
US413938A Expired - Lifetime US3315837A (en) 1964-11-25 1964-11-25 Easy opening end

Country Status (6)

Country Link
US (1) US3315837A (fr)
AT (1) AT257456B (fr)
BE (1) BE666085A (fr)
CH (1) CH429481A (fr)
GB (1) GB1045670A (fr)
NL (1) NL151950B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416698A (en) * 1967-02-13 1968-12-17 Reynolds Metals Co Opening means for a container
US3422983A (en) * 1967-03-16 1969-01-21 American Can Co Tab-opening can
US3478917A (en) * 1967-05-01 1969-11-18 American Can Co Reinforced bead for a tab opening can
EP0040277A1 (fr) * 1980-05-21 1981-11-25 Toyo Seikan Kaisha Limited Couvercle de boîte à ouverture facile avec anneau à tirer
US6908005B1 (en) * 1998-10-08 2005-06-21 Schmalbach-Lubeca Ag Temporary burst stoppage in a sheet metal top
EP1196328A4 (fr) * 1999-05-17 2005-07-06 Charles Chang Couvercle de boite de boisson a double rainures

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5145086A (en) * 1991-05-17 1992-09-08 Krause Arthur A Captive tear tab with protective means for container opening
GB2438058A (en) * 2006-05-11 2007-11-14 Adrian Ward Milk bottle pouring spout

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250426A (en) * 1964-02-24 1966-05-10 Ermal C Fraze Pre-puncturing tab

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250426A (en) * 1964-02-24 1966-05-10 Ermal C Fraze Pre-puncturing tab

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416698A (en) * 1967-02-13 1968-12-17 Reynolds Metals Co Opening means for a container
US3422983A (en) * 1967-03-16 1969-01-21 American Can Co Tab-opening can
US3478917A (en) * 1967-05-01 1969-11-18 American Can Co Reinforced bead for a tab opening can
EP0040277A1 (fr) * 1980-05-21 1981-11-25 Toyo Seikan Kaisha Limited Couvercle de boîte à ouverture facile avec anneau à tirer
US4350262A (en) * 1980-05-21 1982-09-21 Toyo Seikan Kaisha, Ltd. Easy-open can cap with a ring pull tab
US6908005B1 (en) * 1998-10-08 2005-06-21 Schmalbach-Lubeca Ag Temporary burst stoppage in a sheet metal top
EP1196328A4 (fr) * 1999-05-17 2005-07-06 Charles Chang Couvercle de boite de boisson a double rainures

Also Published As

Publication number Publication date
AT257456B (de) 1967-10-10
NL151950B (nl) 1977-01-17
BE666085A (fr) 1965-12-29
NL6515300A (fr) 1966-05-26
CH429481A (fr) 1967-01-31
GB1045670A (en) 1966-10-12

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