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EP0236736A2 - Couvercle déchirable en métal pour récipients - Google Patents

Couvercle déchirable en métal pour récipients Download PDF

Info

Publication number
EP0236736A2
EP0236736A2 EP87101528A EP87101528A EP0236736A2 EP 0236736 A2 EP0236736 A2 EP 0236736A2 EP 87101528 A EP87101528 A EP 87101528A EP 87101528 A EP87101528 A EP 87101528A EP 0236736 A2 EP0236736 A2 EP 0236736A2
Authority
EP
European Patent Office
Prior art keywords
tear
open
section
legs
lid
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.)
Granted
Application number
EP87101528A
Other languages
German (de)
English (en)
Other versions
EP0236736A3 (en
EP0236736B1 (fr
Inventor
Wolfgang Peter
Heinz Hacke
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.)
Ardagh Metal Packaging Germany GmbH
Original Assignee
Schmalback Lubeca AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6295675&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0236736(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Schmalback Lubeca AG filed Critical Schmalback Lubeca AG
Priority to AT87101528T priority Critical patent/ATE53554T1/de
Publication of EP0236736A2 publication Critical patent/EP0236736A2/fr
Publication of EP0236736A3 publication Critical patent/EP0236736A3/de
Application granted granted Critical
Publication of EP0236736B1 publication Critical patent/EP0236736B1/fr
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

Definitions

  • the invention relates to a tear-open lid made of metal for cans, in particular of an oval or rectangular shape, with the features of the preamble of claim 1.
  • Such covers are known in numerous embodiments. They can have a circular, a long oval or a rectangular outline with rounded corners. In particular, such covers are widely used as full-opening covers.
  • the score line is arranged close and largely parallel to the core wall of the lid, so that most of the lid mirror is enclosed by the score line and thus essentially the entire cross section of the can can be exposed by removing the tear-open area.
  • the tear-open area has a tear-open start section, which is characterized in that the score line in this area deviates from the contour of the cover in order to delimit an area limited by a smaller radius of curvature, in which the score line is initially broken in to open.
  • the grip tab serving for breaking in and tearing off the tear-open area is mostly fastened flat lying with a rivet molded out of the cover plate.
  • these beads which extend transversely to the opening direction can continue to the end of the opening area.
  • this ability of the tear-open area to bend can be canceled in other areas of the tear-open area by beads oriented differently.
  • a recess in the tear-open section adapted to the contour of the grip tab has already been provided, which form a coherent stiffening bond with the cross beads, which is additionally supplemented by cup-shaped impressions between this bond and the adjacent score line sections.
  • the grip tab is designed as a rigid lever, usually formed from thin sheet metal and stiffened by edge folds or the like.
  • the grip tab can be designed so that the attachment point of the grip tab on the tear-open area is rigidly connected to the rest of the lever-shaped body of the grip tab.
  • the arrangement can also be such that the fastening point itself is provided on a bendable fastening section surrounded by the body of the grip tab.
  • the score line must be broken in by a shear effect.
  • the forces required are transferred from the grip tab via the fastening rivet to the tab body and from this to the ratchet nose, which generally lies directly above the score line and presses it down. Since the start section of the score line is close to the core wall of the lid, this area ensures that the remaining part of the lid mirror that is permanently connected to the core wall is stiffened in order to withstand this pressure from the breakaway nose of the lever-like grip tab. The resulting shear forces in this area of the score line break the score line.
  • the bead-like depression is formed according to claim 2. This ensures that the decisive, limited area of the tear-open section is stiffened to the desired extent, and at the same time the necessary kinking of the extreme end of the tear-open section is promoted when the score line breaks in.
  • the area in question also has high torsional rigidity.
  • the region of the tear-open start section containing the rivet is stiffened like a board, so that here the membrane-like bulging is largely prevented.
  • the area between the fastening point and the starting notch line should be able to be bent down slightly in order to thereby limit the forces required to break in.
  • the area to be bent down should remain as limited as possible in order to ensure that the score line is torn away safely by applying tensile forces to the grip tab.
  • the lid in question is a long oval lid such as is widely used, e.g. for fish cans. But it could also be a rectangular cover or a circular cover.
  • the lid is made of sheet metal, preferably from sheets with a thickness that is less than the usual thickness, that is less than 0.24 mm.
  • the lid is formed in the usual way with a folded edge 2 which merges into the lid mirror 3 via a core wall.
  • a tear-open area 6 is delimited in the cover mirror by a self-contained notch line 7, of which essentially only the tear-open cut 16 is shown in FIG. 2. While in the remaining area of the lid the notch line 7 runs close to the core wall of the lid edge, its course in the area of the tear-open start section 16 deviates from the outline shape of the lid. Rather, the tear-open start section 16 is delimited by two straight-line notch sections 9 converging towards the left end in FIG. In the area of this end, a grip tab 5 is fastened by means of a rivet 4 formed out of the sheet metal.
  • the handle flap body is attached directly to the cover plate with the rivet 4 lying flat.
  • the grip tab could also be designed such that the fastening point is located on a fastening tab of the grip tab body formed by dividing line 36 in FIG. 2, as is generally known.
  • the grip tab is aligned with its longitudinal center line on the longitudinal center line 19 of the long oval cover.
  • the grip tab has a front end in the form of a ratchet nose 15, which is arranged substantially flush with the start section 8 of the score line.
  • the grip tab 5 has a grip section 12, which is ring-shaped in the example shown.
  • the sheet is stiffened by recess 20 or by ribs or beads which run parallel to the lid edge or to the notch line section 10 parallel to the latter.
  • the width 39 of the tear-open area here almost reaches the size of the inside width of the can, which can be closed with the lid.
  • a U-shaped bead-shaped depression 23, 24 is provided near the attachment point 4 and below the handle tab 5.
  • This consists of a web-shaped section 23 lying under the handle section 12 and two legs or arms 24 projecting forwardly towards the starting score line 8, which end abruptly at 26 on a common line 28 transverse to the longitudinal center line 19 of the handle tab 4.
  • the line 28 runs tangentially to the shank 4a of the rivet 4.
  • the web-shaped section 23 is formed in alignment with the handle end 12.
  • the web-shaped section 23 also has a corresponding partially ring-shaped course, the width of the bead 23 corresponding to the width of the ring region 12.
  • the legs 24 can widen in the transition region to the web-shaped section 23. Their width decreases steadily in the direction of the free ends 26. It could also decrease in depth in that direction.
  • the legs 24 run with their inner boundaries 29 straight and parallel to the line 19.
  • the U-shaped recess 23, 24 is combined with beads 21, 22 extending transversely to the longitudinal center line of the grip tab to form a bead assembly. All beads of this bead composite have essentially the same depth.
  • the shorter cross bead 21 intersects the U-shaped recess at the level of the transition between the web 23 and the legs 24, while the longer transverse bead 22 cuts the annular web part 23, as can be seen from FIG. 3.
  • the transverse beads 21, 22 formed in a straight line in FIG. 2 can also be slightly curved.
  • transverse beads 21, 22 Between the transverse beads 21, 22, a raised region 25 of an almost semicircular contour remains within the ring opening of the handle end 12. Between the shorter bead 21 and the two legs 24 there remains a plateau 11 in the plane of the cover mirror 3, on which plateau the fastening rivet for the grip tab 4 is provided.
  • the transverse beads 21, 22 each project directly up to the adjacent score line sections 9. The remaining distance 31 corresponds somewhat to the width 34 of the beads.
  • the arrangement can be such that at least part of the handle end 12 engages at least partially in the depth of the beads by the type of attachment of the handle tab 5 or by slight deformation of the handle tab 5, so that the handle at the same time prevents twisting by the arrangement Attachment point is reliably secured. Furthermore, the arrangement and location of the handle end 12 relative to the longer transverse bead 22 can be such that the fingernail or fingertip can be easily gripped under the outermost handle end 12 of the handle tab in order to raise this handle end 12 and open the can.
  • the sealant in the cover flange 2 is designated by 32 in FIG. 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Closures For Containers (AREA)
  • Lock And Its Accessories (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Coin-Freed Apparatuses For Hiring Articles (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Wrappers (AREA)
EP87101528A 1986-03-06 1987-02-05 Couvercle déchirable en métal pour récipients Expired - Lifetime EP0236736B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87101528T ATE53554T1 (de) 1986-03-06 1987-02-05 Aufreissdeckel aus metall fuer dosen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3607402 1986-03-06
DE19863607402 DE3607402A1 (de) 1986-03-06 1986-03-06 Aufreissdeckel aus metall fuer dosen

Publications (3)

Publication Number Publication Date
EP0236736A2 true EP0236736A2 (fr) 1987-09-16
EP0236736A3 EP0236736A3 (en) 1988-06-29
EP0236736B1 EP0236736B1 (fr) 1990-06-13

Family

ID=6295675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101528A Expired - Lifetime EP0236736B1 (fr) 1986-03-06 1987-02-05 Couvercle déchirable en métal pour récipients

Country Status (18)

Country Link
US (1) US4767020A (fr)
EP (1) EP0236736B1 (fr)
JP (1) JPS62208358A (fr)
KR (1) KR920006037B1 (fr)
AT (1) ATE53554T1 (fr)
AU (1) AU590685B2 (fr)
BR (1) BR8700944A (fr)
CA (1) CA1273303A (fr)
DD (1) DD254715B5 (fr)
DE (2) DE3607402A1 (fr)
DK (1) DK166912B1 (fr)
ES (1) ES2004227A6 (fr)
GR (1) GR870362B (fr)
IS (1) IS1340B6 (fr)
NO (1) NO171053C (fr)
PL (1) PL155245B1 (fr)
PT (1) PT84403B (fr)
SU (1) SU1547703A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2687372A1 (fr) * 1992-02-19 1993-08-20 Lorraine Laminage Couvercle a ouverture facile et recipient muni d'un tel couvercle.

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3535226A1 (de) * 1985-10-02 1987-04-16 Schmalbach Lubeca Deckel aus blech fuer unrunde dosen, insb. langovale dosen im hansa-format
USD405010S (en) 1994-11-03 1999-02-02 Schmalbach-Lubeca Ag Can lid
US5934498A (en) * 1997-09-19 1999-08-10 Aluminum Company Of America Convenience easy opening end with large removal panel
ES2238116B1 (es) * 2002-11-07 2006-12-01 Mivisa Envases, S.A.U. Tapa de facil apertura.
US20050178379A1 (en) * 2004-01-14 2005-08-18 Michael Weinberger Alcohol gel fireplace burner
US7909195B2 (en) * 2005-09-23 2011-03-22 Wm. Wrigley Jr. Company Two-piece container lid assembly
US7810681B2 (en) * 2006-12-22 2010-10-12 Portola Packaging, Inc. Internal container bore mount fitment
DK3257773T3 (da) * 2016-06-16 2019-05-27 Ardagh Mp Group Netherlands Bv Låg til en rund aflang dåse og en rund aflang dåse forsynet med et sådant låg
GB2580900B (en) * 2019-01-23 2021-05-19 Crown Packaging Technology Inc Can end with ribs to increase panel stiffness

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662916A (en) * 1970-11-23 1972-05-16 Continental Can Co Easy opening container
US3752353A (en) * 1972-01-24 1973-08-14 Campbell Soup Co Can end
US3891117A (en) * 1974-05-24 1975-06-24 Dorn Co V Easy-opening can end construction
DE2832706A1 (de) * 1977-08-15 1979-02-22 Continental Group Deckel aus blech fuer behaelter mit im deckelspiegel vorgesehener aufreisslinie
US4406378A (en) * 1981-07-06 1983-09-27 Automated Container Corporation Metallic convenience closure
EP0171650A2 (fr) * 1984-08-17 1986-02-19 Schmalbach-Lubeca AG Couvercle en tôle pour boîtes de section ovale longiforme, en particulier pour boîtes de forme "Hansa"

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7227762U (de) * 1972-11-02 Wehrstedt & Soehne Voll-Aufreißdeckel für Konservendosen
AU463119B2 (en) * 1972-08-07 1975-07-17 Van Dorn Company Easy opening rectangular metal container
JPS5345750A (en) * 1976-10-06 1978-04-24 Sanyo Electric Co Ltd Hot water boiler
US4524879A (en) * 1984-06-18 1985-06-25 Van Dorn Company Can end pour spout and pull tab construction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662916A (en) * 1970-11-23 1972-05-16 Continental Can Co Easy opening container
US3752353A (en) * 1972-01-24 1973-08-14 Campbell Soup Co Can end
US3891117A (en) * 1974-05-24 1975-06-24 Dorn Co V Easy-opening can end construction
DE2832706A1 (de) * 1977-08-15 1979-02-22 Continental Group Deckel aus blech fuer behaelter mit im deckelspiegel vorgesehener aufreisslinie
US4406378A (en) * 1981-07-06 1983-09-27 Automated Container Corporation Metallic convenience closure
EP0171650A2 (fr) * 1984-08-17 1986-02-19 Schmalbach-Lubeca AG Couvercle en tôle pour boîtes de section ovale longiforme, en particulier pour boîtes de forme "Hansa"

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2687372A1 (fr) * 1992-02-19 1993-08-20 Lorraine Laminage Couvercle a ouverture facile et recipient muni d'un tel couvercle.

Also Published As

Publication number Publication date
DK166912B1 (da) 1993-08-02
NO171053B (no) 1992-10-12
PT84403B (pt) 1989-10-04
DK113487D0 (da) 1987-03-05
SU1547703A3 (ru) 1990-02-28
AU590685B2 (en) 1989-11-09
DD254715A5 (de) 1988-03-09
ATE53554T1 (de) 1990-06-15
US4767020A (en) 1988-08-30
EP0236736A3 (en) 1988-06-29
NO870954L (no) 1987-09-07
DE3607402A1 (de) 1987-09-10
PL264442A1 (en) 1988-06-23
NO870954D0 (no) 1987-03-06
JPS62208358A (ja) 1987-09-12
AU6974487A (en) 1987-09-10
NO171053C (no) 1993-01-20
PL155245B1 (en) 1991-11-29
DD254715B5 (de) 1997-01-23
IS1340B6 (is) 1989-01-13
BR8700944A (pt) 1987-12-29
DE3763179D1 (de) 1990-07-19
KR880009850A (ko) 1988-10-05
JPH0329668B2 (fr) 1991-04-24
GR870362B (en) 1987-06-30
EP0236736B1 (fr) 1990-06-13
IS3186A7 (is) 1987-09-07
ES2004227A6 (es) 1988-12-16
PT84403A (de) 1987-04-01
DE3607402C2 (fr) 1991-03-07
KR920006037B1 (ko) 1992-07-27
DK113487A (da) 1987-09-07
CA1273303A (fr) 1990-08-28

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