EP0256920A1 - Aus Metall bestehender Deckel mit vorgekerbter Aufreissfläche - Google Patents

Aus Metall bestehender Deckel mit vorgekerbter Aufreissfläche Download PDF

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Publication number
EP0256920A1
EP0256920A1 EP87401764A EP87401764A EP0256920A1 EP 0256920 A1 EP0256920 A1 EP 0256920A1 EP 87401764 A EP87401764 A EP 87401764A EP 87401764 A EP87401764 A EP 87401764A EP 0256920 A1 EP0256920 A1 EP 0256920A1
Authority
EP
European Patent Office
Prior art keywords
opening panel
axis
lid according
cover
opening
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
EP87401764A
Other languages
English (en)
French (fr)
Other versions
EP0256920B1 (de
Inventor
Guy Bossert
Ferdinand Fily
Michel Leblois
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.)
Franpac (sa)
FRANPAC
Original Assignee
Franpac (sa)
FRANPAC
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 Franpac (sa), FRANPAC filed Critical Franpac (sa)
Publication of EP0256920A1 publication Critical patent/EP0256920A1/de
Application granted granted Critical
Publication of EP0256920B1 publication Critical patent/EP0256920B1/de
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

Definitions

  • the present invention relates to a metal cover comprising an opening panel delimited by a pre-incision line.
  • the opening of the box is effected by pulling on a ring generally fixed at one end of the opening panel. This traction causes the opening panel to detach along the pre-incision line.
  • This pre-incision line is preferably made using knives which cut into the metal. During this operation, the metal is repelled and it is necessary to absorb the excess material to ensure a suitable appearance to the cover and good mechanical strength during its use. For this, ribs and stampings are produced in a conventional manner.
  • lids having stampings of conventional shape which have the same drawbacks as the ribbed covers parallel to the axis of traction.
  • control of the opening can be made more or less delicate depending on the mechanical qualities of material used for the construction of the cover, and a pull in a direction forming an angle too small with the plane of the cover leads to an additional effort. and, in some cases, almost blocking the opening.
  • the cover object of the present invention allows to significantly reduce the opening forces and to ensure a gentle detachment, absent of shaking and without risk of blocking.
  • the cover according to the invention comprises an opening panel having at least one stamped area.
  • the lateral edges relative to the tearing axis of the stamped area or areas have undulations in the plane of the cover. These undulations can take the most diverse forms, regular or not, and constitute a line made of straight lines and curves alternately concave and convex. They can be periodic or not, and their amplitude can vary. By edge, we mean the lateral limit between the stamped area and the non-stamped area.
  • the deep-drawn zone makes it possible to absorb the excess metal coming from the production of the pre-incision line.
  • the panel has a perfectly stretched surface and a neat presentation. It also provides the cover with sufficient flexibility to accept elastic deformations during the various mechanical operations to which the box is subjected (crimping, autoclave sterilization, handling, etc.).
  • the undulations of the stamped area considerably reduce the winding forces of the opening panel when pulling on the ring since there is no rib parallel to the winding direction capable of opposing the curvature of the panel opening in the detachment area.
  • the curved corrugation segments joining the corrugation segments substantially perpendicular to the axis of traction prevent the blocking of the opening by improperly controlled folding of the opening panel during a traction too parallel to the plane of the cover. .
  • the depth of the stamped area is usually constant.
  • the stamped area thus has a flat bottom with clean edges, a pleasant presentation Furthermore, the absence of embossment or vertical deformation of the stamped area avoids unwanted orientations of the forces exerted on the cover, resulting from the pulling pull .
  • the opening panel has a large stamped area delimited by two wavy edges.
  • Said stamped area can serve as a support for a label presenting the product contained in the box, or for engraved, stamped or printed inscriptions.
  • the pulling ring will be fixed by a rivet or a weld on the opening panel and will have a width slightly greater than the spacing of the edges of the stamped area so as to rest on the edges of the part of the panel not stamped and to facilitate gripping for the opening of the box.
  • the opening panel comprises several stamped zones in hollow or in relief, separated or joining together, and forming beads with wavy lateral edges oriented substantially along the axis of traction.
  • the two edges of each of the beads have oscillations in phase opposition and thus produce beads of variable width.
  • the box (1) is of conventional construction and comprises a side wall and a bottom. Its shape is arbitrary and can be both cylindrical and parallelepiped.
  • the box is closed at its upper part by a crimped cover (2).
  • This cover has a weakening line (3) running a short distance from its upper edge (4).
  • This pre-incision line (3) delimits an opening panel (5) comprising a stamped part (6).
  • the depth of the stamped area (6) usually constant, is advantageously between a few tenths of a millimeter to a few millimeters. Its edges, limiting the stamped area (6) of the remainder of the opening panel (5), have a substantially rounded profile along the lower and upper edges and substantially straight between these two areas.
  • the opening panel (5) comprises a ring (7) fixed by a rivet (8) and extended by a perforation nose (9).
  • the ring rests on either side on the edges of the non-stamped central area (11) and (12), so as to present a grip zone (130 under which the user can easily slide a finger in order to grasp the ring (7) and, by its pivoting around the rivet (8), perforate the pre-incision line with the perforation nose.
  • the stamped area (6) consists of a bead (14) whose side edges (10) are wavy.
  • the wavy edges (10) of the stamped area (6) are in phase opposition and form a bead of variable width (14).
  • a bead with a width of between 5 and 10 mm is made on the opening panel running along the pre-incision zone and whose parallel edges have an undulation with a wavelength between 8 and 10 mm and an amplitude between 2 and 6 mm.
  • the axis of the corrugation (16) denotes the median axis passing through the middle of the undulations of a corrugated edge (10) and the term "amplitude" means the maximum deviation of the undulations of this edge (10) with this axis d ripple, measured along a perpendicular axis called the amplitude axis (15).
  • the opening panel comprises a cord whose width varies periodically between a minimum value of 2 to 4 mm and a maximum value of between 10 and 15 mm, with a wavelength of 8 to 10 mm.
  • the central panel has a large stamped area, the edges of which have undulations of an amplitude of 4 to 8 mm and a wavelength of 8 to 10 mm.
  • the amplitude of the corrugations or their wavelength vary according to the geometry of the cover and the nature of the material from which it is made.
  • the undulations form straight line segments substantially perpendicular to the tearing axis connected by curves of continuous curvature turning their concavity towards the two straight line segments which they connect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Cookers (AREA)
EP87401764A 1986-08-06 1987-07-28 Aus Metall bestehender Deckel mit vorgekerbter Aufreissfläche Expired - Lifetime EP0256920B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8611414 1986-08-06
FR8611414A FR2602485B1 (fr) 1986-08-06 1986-08-06 Couvercle metallique a panneaux d'ouverture pre-incise

Publications (2)

Publication Number Publication Date
EP0256920A1 true EP0256920A1 (de) 1988-02-24
EP0256920B1 EP0256920B1 (de) 1990-01-31

Family

ID=9338100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401764A Expired - Lifetime EP0256920B1 (de) 1986-08-06 1987-07-28 Aus Metall bestehender Deckel mit vorgekerbter Aufreissfläche

Country Status (5)

Country Link
EP (1) EP0256920B1 (de)
DE (1) DE3761548D1 (de)
ES (1) ES2003850B3 (de)
FR (1) FR2602485B1 (de)
PT (1) PT85492B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020152439A1 (en) * 2019-01-23 2020-07-30 Crown Packaging Technology, Inc. Easy open end with increased panel stiffness
RU2811781C2 (ru) * 2019-01-23 2024-01-17 Эвиозис Пэкеджинг Свитцерланд ГмбХ Легко открываемая торцевая крышка с увеличенной жесткостью панели

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB619316A (en) * 1946-12-02 1949-03-08 Sidney Edward Lofts Improvements in or relating to cans and like containers
FR1561840A (de) * 1967-05-15 1969-03-28
DE1959353A1 (de) * 1969-11-26 1971-06-03 Leckermaeulchen Fischkonserven Nietverbindung zwischen Grifflasche und Aufreissflaeche von Behaeltern,Dosen od.dgl.
GB1263092A (en) * 1968-01-22 1972-02-09 Cebal Gp Metal containers
CH551320A (de) * 1973-03-19 1974-07-15 Obrist Albert & Co Behaelterteil, insbesondere eines behaelters fuer pulvrigen oder koernigen inhalt.
EP0008191A1 (de) * 1978-08-04 1980-02-20 Michael Fred Joyce Metallischer Behälterverschlussdeckel und Verfahren zu dessen Herstellung
DE2909076A1 (de) * 1979-03-08 1980-09-11 Schmalbach Lubeca Menuedose
EP0061980A1 (de) * 1981-03-20 1982-10-06 Cebal Leicht zu öffnender Behälter mit Aufreisslasche und Aufreisslinie

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB619316A (en) * 1946-12-02 1949-03-08 Sidney Edward Lofts Improvements in or relating to cans and like containers
FR1561840A (de) * 1967-05-15 1969-03-28
GB1263092A (en) * 1968-01-22 1972-02-09 Cebal Gp Metal containers
DE1959353A1 (de) * 1969-11-26 1971-06-03 Leckermaeulchen Fischkonserven Nietverbindung zwischen Grifflasche und Aufreissflaeche von Behaeltern,Dosen od.dgl.
CH551320A (de) * 1973-03-19 1974-07-15 Obrist Albert & Co Behaelterteil, insbesondere eines behaelters fuer pulvrigen oder koernigen inhalt.
EP0008191A1 (de) * 1978-08-04 1980-02-20 Michael Fred Joyce Metallischer Behälterverschlussdeckel und Verfahren zu dessen Herstellung
DE2909076A1 (de) * 1979-03-08 1980-09-11 Schmalbach Lubeca Menuedose
EP0061980A1 (de) * 1981-03-20 1982-10-06 Cebal Leicht zu öffnender Behälter mit Aufreisslasche und Aufreisslinie

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020152439A1 (en) * 2019-01-23 2020-07-30 Crown Packaging Technology, Inc. Easy open end with increased panel stiffness
GB2580900A (en) * 2019-01-23 2020-08-05 Crown Packaging Technology Inc Easy open end with increased panel stiffness
GB2580900B (en) * 2019-01-23 2021-05-19 Crown Packaging Technology Inc Can end with ribs to increase panel stiffness
CN113365921A (zh) * 2019-01-23 2021-09-07 皇冠包装技术公司 具有增加的板刚度的易开盖
CN113365921B (zh) * 2019-01-23 2023-11-03 皇冠包装技术公司 用于封闭金属罐身的金属易开罐盖及制造该罐盖的方法
RU2811781C2 (ru) * 2019-01-23 2024-01-17 Эвиозис Пэкеджинг Свитцерланд ГмбХ Легко открываемая торцевая крышка с увеличенной жесткостью панели

Also Published As

Publication number Publication date
FR2602485B1 (fr) 1988-11-25
DE3761548D1 (de) 1990-03-08
PT85492B (pt) 1993-07-30
PT85492A (pt) 1988-08-17
FR2602485A1 (fr) 1988-02-12
EP0256920B1 (de) 1990-01-31
ES2003850B3 (es) 1990-05-01
ES2003850A4 (es) 1988-12-01

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