EP2432703A1 - Metal cover with stiffening moldings for a container body - Google Patents

Metal cover with stiffening moldings for a container body

Info

Publication number
EP2432703A1
EP2432703A1 EP10731770A EP10731770A EP2432703A1 EP 2432703 A1 EP2432703 A1 EP 2432703A1 EP 10731770 A EP10731770 A EP 10731770A EP 10731770 A EP10731770 A EP 10731770A EP 2432703 A1 EP2432703 A1 EP 2432703A1
Authority
EP
European Patent Office
Prior art keywords
line
molding
sections
general
traction
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
EP10731770A
Other languages
German (de)
French (fr)
Other versions
EP2432703B1 (en
Inventor
Patrick Oudart
Jean-Marc Legresy
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.)
Trivium Packaging Group Netherlands BV
Original Assignee
Ardagh MP Group Netherlands BV
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 Ardagh MP Group Netherlands BV filed Critical Ardagh MP Group Netherlands BV
Priority to PL10731770T priority Critical patent/PL2432703T3/en
Publication of EP2432703A1 publication Critical patent/EP2432703A1/en
Application granted granted Critical
Publication of EP2432703B1 publication Critical patent/EP2432703B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/001—Action for opening container
    • B65D2517/0017—Action for opening container linearly sliding tear panel
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/0068—Ribs or projections in container end panel
    • B65D2517/007—Ribs or projections in container end panel located within tear-out/push-in panel

Definitions

  • the present invention relates to metal lids for containers, in particular metal containers. It relates more particularly to the covers of the type comprising an associated peripheral ring, by means of a breaking initiation line, to a central panel provided with at least one stiffening molding and equipped with a type of gripping member " opening ring ".
  • Some metal containers mainly cans for food packaging, are equipped with an "easy" opening system, avoiding the use of a can opener.
  • a particularly interesting solution consists of a one-piece cover comprising an associated peripheral ring, via a breaking initiation line, to a central panel equipped with a gripping and pulling member commonly known by the name of " opening ring ".
  • This type of gripping member conventionally comprises two parts along its length: a peripheral part carrying a "spout”, fixed to the central panel of the cover near the breaking initiation line, and an inner part forming a loop of prehension which, before its maneuver for the opening, is pressed against the upper surface of the associated central panel.
  • the user grasps the free portion of the loop of the gripping member, then it separates the latter from the associated central panel.
  • the gripping member then forms a kind of lever, rotated by the user at its peripheral end in the form of a support beak, which causes a break in the breaking initiation line.
  • the central panel generally undergoes folding phenomena along transversely oriented lines relative to the general traction line (in other words, the torn portion of the panel tends to to curl up next to his part that is not yet torn).
  • the Applicant has developed a new cover structure with opening ring, which aims to optimize and reduce the traction energy required for opening.
  • the metal cover according to the invention comprises (i) a peripheral part for its assembly on a container body and (ii) a central part forming a central closure panel, delimited and connected to said peripheral part via a rupture initiation line, which central panel is equipped, at one of its surfaces, with a gripping member composed of two parts through which passes a longitudinal axis of symmetry: a first portion secured to said panel central, and - a second gripping part proper; this gripping member makes it possible to exert traction on said central panel to break said breaking initiation line from a proximal zone adjoining said gripping member, to a distal zone opposite said gripping member; it is intended to progress, during this traction, at least approximately along the length and facing a general traction line defined on said central panel between said proximal and distal zones; the central panel also comprises one or more internal moldings formed of sections, arranged to reinforce its resistance to folding at least along lines transverse to said general traction line, at least two of said internal sections of molding being each formed on one side of
  • this cover is characterized in that said internal sections of molding form two lateral portions of molding which are each formed on one side of said general line of traction, which side portions of molding each comprise (i) an inner molding section, on the general traction line side, and (ii) an outer molding section, extending in the space separating said inner section and said opposite rupture initiation line; and said inner and / or outer portions of the two lateral molding parts extend (advantageously over at least part of their length) divergently with respect to said general traction line and also with respect to each other constituting divergent sections of molding.
  • This cover structure has the advantage of reducing transverse bending phenomena (or bending), and thus further reducing the traction energy required for opening. This advantage results in particular from the creation of an effect called “saddle” or "tile”, that is to say say a bending phenomenon of the panel oriented transversely relative to the general line of traction on the gripping member.
  • the inner portions of the two lateral molding parts extend divergently (advantageously over at least part of their length) with respect to said general traction line and also with respect to each other, and the sections the outside of the two lateral molding parts extend divergently (advantageously over at least part of their length) with respect to said general traction line and also with respect to each other, said inner and outer portions of two lateral portions of molding constituting the divergent sections of molding;
  • the inner and / or outer portions of the two lateral molding portions extend divergently (advantageously over at least part of their length) with respect to said general traction line and also relative to each other in the direction of the distal zone of the rupture initiation line;
  • the divergent segments of the molding extend rectilinearly, or at least substantially rectilinearly, over at least a part of their length;
  • the divergent sections of molding extend symmetrically, or at least substantially symmetrically, with respect to the general traction line;
  • the inner portions of the two lateral molding parts are advantageously connected at a first end near the general traction line, by a first connecting section extending at the general traction line, and both sections of each of said lateral molding parts are connected by a second joining section, at their second end located at a distance from the general traction line and close to the breaking initiation line;
  • the two sections of molding of the same lateral part of the molding advantageously diverge, with respect to each other, from their ends close to said general traction line, to their ends at a distance from the general line traction;
  • the general traction line is composed of at least two portions: (i) a proximal portion on the side of the proximal zone of the rupture initiation line, and oriented coaxially or at least substantially coaxially with respect to the axis longitudinal portion of the grasping member, and (ii) a distal portion on the distal zone side of said leader line, and oriented coaxially or at least substantially coaxially with respect to a central axis of the central panel passing through said distal zone ; in this case, the diverging sections of molding are provided at said distal portion of the general traction line; always in this case, at least two other sections of molding are advantageously formed each one side of the proximal portion of the general line of traction, which sections of molding Proximals extend near and along part of the breakaway line; in the case of an internal molding with two lateral parts, the proximal molding sections are each connected to the first end of the outer section of one of said side molding parts;
  • the central panel advantageously has a generally non-circular shape delimited by a breaking initiation line comprising two longitudinal sections connected by two transverse sections;
  • the gripping member is fixed at an angle of said rupture initiation line corresponding to the junction between a first transverse section and a first longitudinal section of said rupture initiation line, to form its proximal zone of rupture, and the two divergent sections of molding deviate from the general line of traction, towards the second transverse section of said breaking line to form the distal rupture zone;
  • the two divergent segments of the molding may deviate in a direction opposite to that of the general traction line (that is to say they are diverging in a distal to proximal direction);
  • the central panel further comprises "peripheral" molding sections extending along and close to at least a part of the length of the breaking initiation line, such that the distance between said peripheral portions molding and said breaking initiation line is between 0.5 and 5 mm;
  • the inner and peripheral molding sections of the central panel are connected to each other so as to form together a single continuous molding
  • the internal sections of the molding, and where appropriate the peripheral sections of molding, have a proximal end located at a line extending transversely to the longitudinal axis of said gripping member, to promote the folding of the panel central at said transverse line during a lifting maneuver of said gripping member.
  • FIG. 1 is a general view and from above of a lid whose central panel comprises a continuous stiffening molding according to the present invention
  • FIG. 1 is a sectional view along an N-II plane of the cover of Figure 1.
  • the lid 1, as shown in FIG. 1, is intended to be assembled with the upper edge of a metal container body (not shown).
  • This container body generally consists of a bottom element associated with the lower edge of a sidewall belt (circular section, square, rectangular, etc.).
  • the connection between the lid 1 and the container body is usually performed by a crimping technique.
  • the cover 1 consists, in a conventional manner, of a portion 2 forming a peripheral ring which is associated, via a breaking initiation line 3, to a portion 4 forming central shutter panel, removable.
  • the lid 1 has, seen from above, a generally non-circular shape, in this case rectangular.
  • the ring 2 is thus rectangular. It is adapted to allow the attachment of the cover 1 by crimping, on a side wall of container also rectangular section (as indicated above, this general shape may be different).
  • the breaking initiation line 3 (also hereinafter referred to as "break line”) is here also of generally rectangular shape, seen from above (FIG. 1). It comprises two longitudinal sections 3a 1 and 3a2, connected by two transverse sections 3b1 and 3b_2.
  • This breaking line 3 is made by a thinning material, obtained by the implementation of a suitable tool, during the manufacture of the lid.
  • the break line 3 is here closed / complete (it extends around the entire periphery of the shutter panel 4); alternatively, it could be only partial.
  • the central shutter panel 4 is also of generally rectangular shape, with a longitudinal axis of symmetry 4 '.
  • This panel 4 is intended to be equipped, at its upper surface, with a gripping member 6 whose manipulation by the user will allow easy opening of the lid 1 (that is to say, a separation, total or partial, of the central panel 4 relative to the peripheral ring 2 by breaking line 3).
  • This gripping member 6 is generally known to those skilled in the art under the name of "opening ring”.
  • the opening ring 6 is shown in broken lines in FIG. 1, only as an indication and schematically.
  • This ring 6 comprises two parts, arranged along an axis of symmetry 6 'oriented coaxially with the bisector of the proximal zone 3c:
  • this ring 6 allows the user to exert traction on the central panel 4, so as to break the breaking line 3 from the proximal zone or upstream 3c above (adjacent to the gripping member 6), to a zone distal or downstream located opposite said ring 6.
  • This distal zone here corresponds to the second transverse section 3b_2 of the break line 3, located opposite the first transverse section 3b1 supra.
  • the ring 6 progresses at least approximately along the length and facing a general traction line 9 defined on the central panel between the proximal zones 3c_ and distal 3b2.
  • This general traction line 9 is shown in FIG. 1, by a line in broken lines. It consists here of two portions of rectilinear general shape:
  • a proximal portion 9a located on the side of the proximal zone 3c of the breaking initiation line 3, and oriented coaxially or at least substantially coaxially with respect to the longitudinal axis 6 'of the gripping member 6, and
  • a distal portion 9b located on the side of the distal zone 3b2 of said break line 3, and oriented coaxially or at least substantially coaxially with respect to the central axis 4 'of the central panel 4 passing through said distal zone 3b2 (this axis median 4 'extends here parallel and between the two longitudinal sections 3a of the break line 3).
  • the central panel 4 further comprises moldings or indentations, here hollow (or alternatively hump), adapted to stiffen the central panel 4.
  • the central panel 4 comprises a first molding 10 called “central” or “internal”, surrounded by a second molding 1 1 called “peripheral”, extending along and close to the length of the line d 3.
  • These "internal” and “peripheral” moldings 11 are here continuous; alternatively, they may also be discontinuous, one with respect to the other and / or in themselves.
  • These moldings are delimited by simple sections of molding (a single change of height); they may also be defined by sections of double molding, forming for example a simple hollow or humped rib.
  • At least some of the molding sections defining the central molding 10 are arranged to generate a "saddle" or “tile” effect on the central panel 4 during its opening (that is to say a bending of this panel 4 transversely to the general traction line 9, or in other words, incipient bending from the two longitudinal sections 3a of the break line 3 with a high point at its central axis 4 '.
  • At least two of the sections of the inner molding 10 are each formed on one side of the general traction line 9, and extend divergently with respect to said general traction line 9 and also relative to each other.
  • the internal molding 10 is composed of sections of moldings called “proximal” or “upstream” 10a and others known as “distal” or “downstream” 10b, respectively extending at and on both sides of 9a and distal 9b proximal portions of the traction line 9.
  • the distal sections 10b of internal molding 10 form two lateral moldings parts 13 in the general shape of a loop or U, which are each formed on one side of the distal portion 9b of the general traction line 9.
  • These lateral molding parts 13 each comprise (i) an inner molding section 10b1, general traction line side 9, (ii) an outer molding section 10b2, extending in the space separating said inner section 10b1 and the line 3, and (iii) a junction section 10b3, connecting the two segments of moldings 10b1 and 10b2 at their downstream end, located at a distance from the general traction line 9 and close to the distal zone 3b2 of the rupture initiation line 3.
  • inner portions 10b1 and outer 10b2 extend symmetrically, or at least almost symmetrically, relative to the general line of traction 9 and in particular its distal portion 9b.
  • the inner portions 10b1 extend rectilinearly, or at least substantially rectilinearly.
  • junction section 10b_4 in the general shape of a circular arc
  • inner portions 10b1 diverge relative to each other in the upstream to downstream direction (i.e. still towards said distal rupture zone 3b2).
  • the inner portions 10b2 comprise two parts extending rectilinearly, or at least substantially rectilinearly: - an upstream portion 10b2 ', diverging relative to the pulling line 9 opposite, and - a downstream portion 10b2 ", parallel or at least substantially parallel to the longitudinal sections of rupture 3a1.
  • the upstream portions 10b2 ' also diverge from each other in the upstream to downstream direction (i.e. still towards said distal rupture zone 3b_2).
  • the two sections of molding 10b1 and 10b_2 (in particular at the level of the upstream parts 10b_2 ') of the same lateral part of the molding 13 diverge relative to one another from their upstream ends near the general pulling line 9 (upstream side of the distal portion 9b), to their downstream ends away from the general pulling line 9 (downstream side of the distal portion 9b).
  • This particular structure reinforces the effect of "tile" or "saddle" sought.
  • the proximal molding sections 10a are each also formed on one side of the general traction line 9, mainly at the level of its proximal portion 9a and also of the portion of junction 9c.
  • the function of these sections 10a is to stiffen the panel 4, to optimize the initiation of the tear of the rupture line 3.
  • proximal trim sections 10a1 extend proximate and along a portion of the breakaway line 3. They have a shape identical to, or similar to, the breakaway line portion 3 opposite.
  • one of the sections 10a1 ' (right in Figure 1, and facing a portion of the first longitudinal section of rupture 3a1) has a simple rectilinear shape; the other section 10a1 "(left in FIG. 1, and facing a portion of the first transverse section 3b 1 and the second longitudinal rupture section 3a2) has a general shape of L.
  • proximal molding sections 10a1 are here each connected, via a curved junction, to the upstream end of the outer section 10b_2 of one of the lateral molding parts 13.
  • This junction is in this case carried out by a section of molding 10a2, rectilinear or at least substantially rectilinear, converging towards each other in the proximal to distal direction.
  • These convergent sections 10a2 make it possible in particular to reinforce the divergent nature of the sections 10b1 and 10b_2 of the distal lateral portions 13.
  • the central panel 4 further comprises peripheral molding sections 1 1 which run along the breaking line 3.
  • the width separating these peripheral sections of molding 1 1 and said breaking initiation line 3 is advantageously between 0.5 and 5 mm.
  • These peripheral molding sections 1 1 are connected to the upstream end of the proximal inner sections 10a, so as to form together the single continuous molding.
  • the two links 14 between the inner sections 10 and the peripheral sections 11 are located at a distance from each other, and on either side of the traction line 9; they are located again outside the bulk of the ring 6 and at a distance from the proximal rupture zone 3c.
  • These two links 14 are positioned on a line 15 extending transversely to the longitudinal axis 6 'of the gripping member 6, to promote the folding of the central panel 4 at the level of said transverse line 15 during a maneuver of lifting of said gripping member 6.
  • FIG. 1 there is still the presence of a circular molding 16, located between the proximal molding sections 10a and on the tracking axis 9 of the ring 6.
  • This molding 16 is also intended to be located at level of the loop 8 of the ring 6 to facilitate its grip by the consumer when opening the box.
  • the opening of the lid is implemented in a conventional manner, by pulling on the dedicated ring 6, that in the proximal-distal direction.
  • this ring 6 moves substantially along the general traction line 9 described in detail above.
  • the ring 6 can be placed in the middle, or at least substantially in the middle of the transverse section 3b1 of the break line. This ring 6 is thus oriented so that its axis 6 'is coaxial with respect to the median axis 4' of the panel 4.
  • the path line 9 of the ring 6 is rectilinear, or at least almost rectilinear.
  • the internal stiffening moldings 10 can then be formed by the two lateral parts 13 which extend over almost the entire length of the panel 4, to obtain an optimal "saddle" effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Body Structure For Vehicles (AREA)
  • Closures For Containers (AREA)

Abstract

The present invention relates to a metal cover (1) for a container body, in particular for a container of the metal can type, wherein said cover (1) includes a central portion (4) forming a central blocking panel, delimited by a breakage-priming line (3) and provided with a grasping member (6) for exerting a pulling force on said central panel (4) in order to break said breakage-priming line (3) along a general pulling line (9) defined on said central panel (4) between the proximal (3c) and distal (3b2) areas. The central panel (4) of the invention further comprises one or more inner moldings (10) formed by molding sections (10a, 10b), arrangeed to reinforce the resistance thereof to folding at least along lines that are transverse to the general pulling line (9), wherein at least two of the inner molding segments (10b) are each provided on one side of the general pulling line (9) and extend so as to diverge from the general pulling line (9) as well as from each other in order to generate a so-called "saddle" or "tile" effect.

Description

COUVERCLE METALLIQUE POUR UN CORPS DE CONTENANT, AVEC MOULURES DE METAL COVER FOR A CONTAINER BODY, WITH MOLDINGS
RIGIDIFICATIONSTIFFENING
La présente invention concerne les couvercles métalliques pour contenants, en particulier les contenants métalliques. Elle concerne plus particulièrement les couvercles du type comportant une bague périphérique associée, par le biais d'une ligne d'amorce de rupture, à un panneau central muni d'au moins une moulure de rigidification et équipé d'un organe de préhension type « anneau d'ouverture ».The present invention relates to metal lids for containers, in particular metal containers. It relates more particularly to the covers of the type comprising an associated peripheral ring, by means of a breaking initiation line, to a central panel provided with at least one stiffening molding and equipped with a type of gripping member " opening ring ".
Certains contenants métalliques, principalement les boîtes de conserve pour le conditionnement de denrées alimentaires, sont équipés d'un système d'ouverture dit « facile », évitant l'utilisation d'outil type ouvre-boîte.Some metal containers, mainly cans for food packaging, are equipped with an "easy" opening system, avoiding the use of a can opener.
Une solution particulièrement intéressante consiste en un couvercle monobloc comportant une bague périphérique associée, par le biais d'une ligne d'amorce de rupture, à un panneau central équipé d'un organe de préhension et de traction dénommé couramment sous le nom d'« anneau d'ouverture ».A particularly interesting solution consists of a one-piece cover comprising an associated peripheral ring, via a breaking initiation line, to a central panel equipped with a gripping and pulling member commonly known by the name of " opening ring ".
Ce type d'organe de préhension comprend classiquement deux parties sur sa longueur : - une partie périphérique portant un « bec », fixée au panneau central du couvercle à proximité de la ligne d'amorce de rupture, et - une partie intérieure formant boucle de préhension qui, avant sa manœuvre pour l'ouverture, est plaquée contre la surface supérieure du panneau central associé.This type of gripping member conventionally comprises two parts along its length: a peripheral part carrying a "spout", fixed to the central panel of the cover near the breaking initiation line, and an inner part forming a loop of prehension which, before its maneuver for the opening, is pressed against the upper surface of the associated central panel.
Pour ouvrir le contenant, l'utilisateur saisit la partie libre de la boucle de l'organe de préhension, puis il écarte cette dernière du panneau central associé. L'organe de préhension forme alors une sorte de levier, mis en rotation par l'utilisateur au niveau de son extrémité périphérique en forme de bec d'appui, qui vient provoquer une cassure de la ligne d'amorce de rupture.To open the container, the user grasps the free portion of the loop of the gripping member, then it separates the latter from the associated central panel. The gripping member then forms a kind of lever, rotated by the user at its peripheral end in the form of a support beak, which causes a break in the breaking initiation line.
Il suffit ensuite à l'utilisateur d'exercer une traction convenable sur l'organe de préhension de sorte à poursuivre l'ouverture au niveau de la ligne d'amorce de rupture et à dissocier le panneau central de sa bague associée.It is then sufficient for the user to exert a suitable traction on the gripping member so as to continue the opening at the breaking initiation line and dissociate the central panel of its associated ring.
Or, en pratique, lors de l'opération d'ouverture, le panneau central subit généralement des phénomènes de pliage selon des lignes orientées transversalement par rapport à la ligne générale de traction (en d'autres termes, la partie déchirée du panneau a tendance à venir se recourber en regard de sa partie qui n'est pas encore déchirée).However, in practice, during the opening operation, the central panel generally undergoes folding phenomena along transversely oriented lines relative to the general traction line (in other words, the torn portion of the panel tends to to curl up next to his part that is not yet torn).
Ces phénomènes ont pour effet de réduire le rendement de l'énergie de traction, et ainsi d'accroître l'effort nécessaire à la déchirure de la ligne d'amorce de rupture par le consommateur.These phenomena have the effect of reducing the efficiency of the traction energy, and thus increase the effort required to tear the line of initiation of rupture by the consumer.
Pour limiter ce problème, il est courant de réaliser des moulures de rigidification sur le panneau central, destinées à améliorer la résistance de ce panneau à rencontre de ces phénomènes de pliage ou de recourbement indésirables. L'énergie de traction à exercer par le consommateur pour l'ouverture du couvercle s'avère alors réduite.To limit this problem, it is common to make stiffening moldings on the central panel, intended to improve the resistance of this panel against these unwanted folding or bending phenomena. The traction energy to be exerted by the consumer for opening the lid is then reduced.
Cependant, en pratique, il s'avère que toutes les moulures de rigidification ne sont pas aussi efficaces les unes par rapport aux autres, pour optimiser l'énergie de traction exercée par le consommateur.However, in practice, it turns out that all the stiffening moldings are not as effective relative to each other, to optimize the traction energy exerted by the consumer.
Pour cette raison, la demanderesse a développé une nouvelle structure de couvercle avec anneau d'ouverture, qui vise à optimiser et réduire l'énergie de traction nécessaire à l'ouverture.For this reason, the Applicant has developed a new cover structure with opening ring, which aims to optimize and reduce the traction energy required for opening.
Le couvercle métallique selon l'invention comprend (i) une partie périphérique pour son assemblage sur un corps de contenant et (ii) une partie centrale formant panneau central d'obturation, délimitée et raccordée à ladite partie périphérique par l'intermédiaire d'une ligne d'amorce de rupture, lequel panneau central est équipé, au niveau de l'une de ses surfaces, d'un organe de préhension composé de deux parties par lesquelles passe un axe longitudinal de symétrie : - une première partie solidarisée avec ledit panneau central, et - une seconde partie de préhension proprement dite ; cet organe de préhension permet d'exercer une traction sur ledit panneau central pour rompre ladite ligne d'amorce de rupture depuis une zone proximale attenante audit organe de préhension, jusqu'à une zone distale à l'opposé dudit organe de préhension ; il est destiné à progresser, lors de cette traction, au moins approximativement sur la longueur et en regard d'une ligne générale de traction définie sur ledit panneau central entre lesdites zones proximale et distale ; le panneau central comporte encore une ou plusieurs moulures internes formées de tronçons, agencés pour renforcer sa résistance au pliage au moins selon des lignes transversales à ladite ligne générale de traction, au moins deux desdits tronçons internes de moulure étant ménagés chacun d'un côté de ladite ligne générale de traction.The metal cover according to the invention comprises (i) a peripheral part for its assembly on a container body and (ii) a central part forming a central closure panel, delimited and connected to said peripheral part via a rupture initiation line, which central panel is equipped, at one of its surfaces, with a gripping member composed of two parts through which passes a longitudinal axis of symmetry: a first portion secured to said panel central, and - a second gripping part proper; this gripping member makes it possible to exert traction on said central panel to break said breaking initiation line from a proximal zone adjoining said gripping member, to a distal zone opposite said gripping member; it is intended to progress, during this traction, at least approximately along the length and facing a general traction line defined on said central panel between said proximal and distal zones; the central panel also comprises one or more internal moldings formed of sections, arranged to reinforce its resistance to folding at least along lines transverse to said general traction line, at least two of said internal sections of molding being each formed on one side of said general traction line.
Conformément à l'invention, ce couvercle est caractérisé par la fait que lesdits tronçons internes de moulure forment deux parties latérales de moulure qui sont ménagées chacune d'un côté de ladite ligne générale de traction, lesquelles parties latérales de moulure comprennent chacune (i) un tronçon de moulure intérieur, côté ligne générale de traction, et (ii) un tronçon de moulure extérieur, s'étendant dans l'espace séparant ledit tronçon intérieur et ladite ligne d'amorce de rupture en regard ; et lesdits tronçons intérieurs et/ou extérieurs des deux parties latérales de moulure s'étendent (avantageusement sur une partie au moins de leur longueur) de manière divergente par rapport à ladite ligne générale de traction et également l'un par rapport à l'autre, constituant des tronçons divergents de moulure. Cette structure de couvercle a pour intérêt de réduire les phénomènes de pliage transversaux (ou recourbement), et donc de réduire encore l'énergie de traction nécessaire à l'ouverture. Cet avantage résulte en particulier de la création d'un effet dit de « selle » ou de « tuile », c'est-à- dire un phénomène de cintrage du panneau orienté transversalement par rapport à la ligne générale de traction sur l'organe de préhension.According to the invention, this cover is characterized in that said internal sections of molding form two lateral portions of molding which are each formed on one side of said general line of traction, which side portions of molding each comprise (i) an inner molding section, on the general traction line side, and (ii) an outer molding section, extending in the space separating said inner section and said opposite rupture initiation line; and said inner and / or outer portions of the two lateral molding parts extend (advantageously over at least part of their length) divergently with respect to said general traction line and also with respect to each other constituting divergent sections of molding. This cover structure has the advantage of reducing transverse bending phenomena (or bending), and thus further reducing the traction energy required for opening. This advantage results in particular from the creation of an effect called "saddle" or "tile", that is to say say a bending phenomenon of the panel oriented transversely relative to the general line of traction on the gripping member.
D'autres caractéristiques avantageuses, pouvant être prises en combinaison ou indépendamment les unes des autres, sont précisées ci-dessous :Other advantageous characteristics, which can be taken in combination or independently of one another, are specified below:
- les tronçons intérieur des deux parties latérales de moulure s'étendent de manière divergente (avantageusement sur une partie au moins de leur longueur) par rapport à ladite ligne générale de traction et également l'un par rapport à l'autre, et les tronçons extérieurs des deux parties latérales de moulure s'étendent de manière divergente (avantageusement sur une partie au moins de leur longueur) par rapport à ladite ligne générale de traction et également l'un par rapport à l'autre, lesdits tronçons intérieurs et extérieurs des deux parties latérales de moulure constituant les tronçons divergents de moulure ;the inner portions of the two lateral molding parts extend divergently (advantageously over at least part of their length) with respect to said general traction line and also with respect to each other, and the sections the outside of the two lateral molding parts extend divergently (advantageously over at least part of their length) with respect to said general traction line and also with respect to each other, said inner and outer portions of two lateral portions of molding constituting the divergent sections of molding;
- les tronçons intérieurs et/ou extérieurs des deux parties latérales de moulure s'étendent de manière divergente (avantageusement sur une partie au moins de leur longueur) par rapport à ladite ligne générale de traction et également l'un par rapport à l'autre, en direction de la zone distale de la ligne d'amorce de rupture ;the inner and / or outer portions of the two lateral molding portions extend divergently (advantageously over at least part of their length) with respect to said general traction line and also relative to each other in the direction of the distal zone of the rupture initiation line;
- les tronçons divergents de moulure s'étendent de manière rectiligne, ou au moins sensiblement de manière rectiligne, sur au moins une partie de leur longueur ;the divergent segments of the molding extend rectilinearly, or at least substantially rectilinearly, over at least a part of their length;
- les tronçons divergents de moulure s'étendent de manière symétrique, ou au moins sensiblement de manière symétrique, par rapport à la ligne générale de traction ;the divergent sections of molding extend symmetrically, or at least substantially symmetrically, with respect to the general traction line;
- les tronçons intérieurs des deux parties latérales de moulure sont avantageusement raccordés au niveau d'une première extrémité à proximité de la ligne générale de traction, par un premier tronçon de jonction s'étendant au niveau de la ligne générale de traction, et les deux tronçons de chacune desdites parties latérales de moulure sont reliés par un second tronçon de jonction, au niveau de leur seconde extrémité située à distance de la ligne générale de traction et à proximité de la ligne d'amorce de rupture ;the inner portions of the two lateral molding parts are advantageously connected at a first end near the general traction line, by a first connecting section extending at the general traction line, and both sections of each of said lateral molding parts are connected by a second joining section, at their second end located at a distance from the general traction line and close to the breaking initiation line;
- les deux tronçons de moulure d'une même partie latérale de moulure divergent avantageusement, l'un par rapport à l'autre, depuis leurs extrémités à proximité de ladite ligne générale de traction, jusqu'à leurs extrémités à distance de la ligne générale de traction ;the two sections of molding of the same lateral part of the molding advantageously diverge, with respect to each other, from their ends close to said general traction line, to their ends at a distance from the general line traction;
- la ligne générale de traction se compose d'au moins deux portions : (i) une portion proximale du côté de la zone proximale de la ligne d'amorce de rupture, et orientée coaxialement ou au moins sensiblement coaxialement par rapport à l'axe longitudinal de l'organe de préhension, et (ii) une portion distale du côté de la zone distale de ladite ligne d'amorce, et orientée coaxialement ou au moins sensiblement coaxialement par rapport à un axe médian du panneau central passant par ladite zone distale ; dans ce cas, les tronçons divergents de moulure sont ménagés au niveau de ladite portion distale de la ligne générale de traction ; toujours dans ce cas, au moins deux autres tronçons de moulure sont avantageusement ménagés chacun d'un côté de la portion proximale de la ligne générale de traction, lesquels tronçons de moulure proximaux s'étendent à proximité et le long d'une partie de la ligne d'amorce de rupture ; dans le cas d'une moulure interne avec deux parties latérales, les tronçons de moulure proximaux sont chacun raccordés à la première extrémité du tronçon extérieur de l'une desdites parties latérales de moulure ;the general traction line is composed of at least two portions: (i) a proximal portion on the side of the proximal zone of the rupture initiation line, and oriented coaxially or at least substantially coaxially with respect to the axis longitudinal portion of the grasping member, and (ii) a distal portion on the distal zone side of said leader line, and oriented coaxially or at least substantially coaxially with respect to a central axis of the central panel passing through said distal zone ; in this case, the diverging sections of molding are provided at said distal portion of the general traction line; always in this case, at least two other sections of molding are advantageously formed each one side of the proximal portion of the general line of traction, which sections of molding Proximals extend near and along part of the breakaway line; in the case of an internal molding with two lateral parts, the proximal molding sections are each connected to the first end of the outer section of one of said side molding parts;
- les deux tronçons divergents de moulure s'écartent dans le sens de la ligne générale de traction proximal vers distal ; dans ce cas, le panneau central présente avantageusement une forme générale non circulaire, délimitée par une ligne d'amorce de rupture comprenant deux tronçons longitudinaux reliés par deux tronçons transversaux ; l'organe de préhension est fixé au niveau d'un angle de ladite ligne d'amorce de rupture correspondant à la jonction entre un premier tronçon transversal et un premier tronçon longitudinal de ladite ligne d'amorce de rupture, pour former sa zone proximale de rupture, et les deux tronçons divergents de moulure s'écartent partant de la ligne générale de traction, en direction du second tronçon transversal de ladite ligne d'amorce de rupture pour former la zone distale de rupture ;- The two divergent sections of molding deviate in the direction of the general line of traction proximal to distal; in this case, the central panel advantageously has a generally non-circular shape delimited by a breaking initiation line comprising two longitudinal sections connected by two transverse sections; the gripping member is fixed at an angle of said rupture initiation line corresponding to the junction between a first transverse section and a first longitudinal section of said rupture initiation line, to form its proximal zone of rupture, and the two divergent sections of molding deviate from the general line of traction, towards the second transverse section of said breaking line to form the distal rupture zone;
- de manière alternative, les deux tronçons divergents de moulure peuvent s'écarter dans un sens inverse à celui de la ligne générale de traction (c'est-à-dire qu'ils sont divergents dans un sens distal vers proximal) ;alternatively, the two divergent segments of the molding may deviate in a direction opposite to that of the general traction line (that is to say they are diverging in a distal to proximal direction);
- le panneau central comporte encore des tronçons de moulure dit « périphériques » s'étendant le long et à proximité d'au moins une partie de la longueur de la ligne d'amorce de rupture, de telle sorte que la distance entre lesdits tronçons périphériques de moulure et ladite ligne d'amorce de rupture soit comprise entre 0,5 et 5 mm ;the central panel further comprises "peripheral" molding sections extending along and close to at least a part of the length of the breaking initiation line, such that the distance between said peripheral portions molding and said breaking initiation line is between 0.5 and 5 mm;
- les tronçons internes et périphériques de moulure du panneau central sont reliées les unes aux autres de sorte à former ensemble une moulure continue unique ;the inner and peripheral molding sections of the central panel are connected to each other so as to form together a single continuous molding;
- les tronçons internes de moulure, et le cas échéant les tronçons périphériques de moulure, comportent une extrémité proximale située au niveau d'une ligne s'étendant transversalement par rapport à l'axe longitudinal dudit organe de préhension, pour favoriser le pliage du panneau central au niveau de ladite ligne transversale lors d'une manœuvre de soulèvement dudit organe de préhension.- The internal sections of the molding, and where appropriate the peripheral sections of molding, have a proximal end located at a line extending transversely to the longitudinal axis of said gripping member, to promote the folding of the panel central at said transverse line during a lifting maneuver of said gripping member.
L'invention est encore illustrée, sans être aucunement limitée, par la description suivante en relation avec les dessins annexés dans lesquels :The invention is further illustrated, without being limited in any way, by the following description in relation to the accompanying drawings in which:
- la figure 1 est une vue générale et de dessus d'un couvercle dont le panneau central comporte une moulure de rigidification continue conforme à la présente invention ;- Figure 1 is a general view and from above of a lid whose central panel comprises a continuous stiffening molding according to the present invention;
- la figure 2 est une vue en coupe selon un plan N-Il du couvercle de la figure 1.- Figure 2 is a sectional view along an N-II plane of the cover of Figure 1.
Le couvercle 1 , tel que représenté sur la figure 1 , est destiné à être assemblé avec la bordure supérieure d'un corps de contenant métallique (non représenté).The lid 1, as shown in FIG. 1, is intended to be assembled with the upper edge of a metal container body (not shown).
Ce corps de contenant se compose généralement d'un élément de fond associé à la bordure inférieure d'une ceinture de parois latérales (à section circulaire, carrée, rectangulaire, etc.). La liaison entre le couvercle 1 et le corps de contenant s'effectue, de manière habituelle, par une technique de sertissage.This container body generally consists of a bottom element associated with the lower edge of a sidewall belt (circular section, square, rectangular, etc.). The connection between the lid 1 and the container body is usually performed by a crimping technique.
Le couvercle 1 se compose, de manière classique, d'une partie 2 formant bague périphérique qui est associée, par l'intermédiaire d'une ligne d'amorce de rupture 3, à une partie 4 formant panneau central d'obturation, amovible.The cover 1 consists, in a conventional manner, of a portion 2 forming a peripheral ring which is associated, via a breaking initiation line 3, to a portion 4 forming central shutter panel, removable.
Il est avantageusement réalisé monobloc par une technique d'emboutissage, cela à partir d'une tôle en matériau métallique du type aluminium, acier, etc.It is advantageously made monobloc by a stamping technique, that from a sheet metal material of the type aluminum, steel, etc..
Le couvercle 1 présente, vue de dessus, une forme générale non circulaire, en l'occurrence rectangulaire.The lid 1 has, seen from above, a generally non-circular shape, in this case rectangular.
La bague 2 est ainsi de forme rectangulaire. Elle est adaptée pour permettre la fixation du couvercle 1 par sertissage, sur une paroi latérale de contenant également à section rectangulaire (comme indiqué ci-dessus, cette forme générale peut être différente).The ring 2 is thus rectangular. It is adapted to allow the attachment of the cover 1 by crimping, on a side wall of container also rectangular section (as indicated above, this general shape may be different).
La ligne d'amorce de rupture 3 (encore dénommée par la suite « ligne de rupture ») est ici également de forme générale rectangulaire, vue de dessus (figure 1 ). Elle comprend deux tronçons longitudinaux 3a 1 et 3a2, reliés par deux tronçons transversaux 3b1 et 3b_2.The breaking initiation line 3 (also hereinafter referred to as "break line") is here also of generally rectangular shape, seen from above (FIG. 1). It comprises two longitudinal sections 3a 1 and 3a2, connected by two transverse sections 3b1 and 3b_2.
Cette ligne de rupture 3 est réalisée par un amincissement de matière, obtenu par la mise en œuvre d'un outil adapté, lors de la fabrication du couvercle.This breaking line 3 is made by a thinning material, obtained by the implementation of a suitable tool, during the manufacture of the lid.
La ligne de rupture 3 est ici fermée / complète (elle s'étend sur tout le pourtour du panneau d'obturation 4) ; de manière alternative, elle pourrait être uniquement partielle.The break line 3 is here closed / complete (it extends around the entire periphery of the shutter panel 4); alternatively, it could be only partial.
D'autre part, le panneau central d'obturation 4 est lui aussi de forme générale rectangulaire, avec un axe longitudinal de symétrie 4'.On the other hand, the central shutter panel 4 is also of generally rectangular shape, with a longitudinal axis of symmetry 4 '.
Ce panneau 4 est destiné à être équipé, au niveau de sa surface supérieure, d'un organe de préhension 6 dont la manipulation par l'utilisateur va permettre une ouverture facile du couvercle 1 (c'est-à-dire une désolidarisation, totale ou partielle, du panneau central 4 par rapport à la bague périphérique 2 par rupture de la ligne 3).This panel 4 is intended to be equipped, at its upper surface, with a gripping member 6 whose manipulation by the user will allow easy opening of the lid 1 (that is to say, a separation, total or partial, of the central panel 4 relative to the peripheral ring 2 by breaking line 3).
Cet organe de préhension 6 est généralement connu de l'homme du métier sous l'appellation d'« anneau d'ouverture ».This gripping member 6 is generally known to those skilled in the art under the name of "opening ring".
L'anneau d'ouverture 6 est représenté en traits discontinus sur la figure 1 , seulement à titre indicatif et de manière schématique.The opening ring 6 is shown in broken lines in FIG. 1, only as an indication and schematically.
Il est fixé ici au niveau d'un angle de la ligne de rupture 3, formé par la jonction entre un premier tronçon transversal 3b1 et un premier tronçon longitudinal 3a1 de ladite ligne de rupture 3 ; cet angle de la ligne de rupture 3 correspond à une zone de rupture 3ç dite proximale ou amont.It is fixed here at an angle of the breaking line 3, formed by the junction between a first transverse section 3b1 and a first longitudinal section 3a1 of said break line 3; this angle of the rupture line 3 corresponds to a so-called proximal or upstream rupture zone 3c.
Cet anneau 6 comporte deux parties, agencées selon un axe de symétrie 6' orienté coaxialement à la bissectrice de la zone proximale 3ç :This ring 6 comprises two parts, arranged along an axis of symmetry 6 'oriented coaxially with the bisector of the proximal zone 3c:
- une partie périphérique 7 fixée au panneau 4, à proximité de la ligne de rupture 3, comportant un bec (non représenté), et - une partie intérieure 8, formant boucle de préhension, qui est plaquée contre la surface supérieure du panneau central 4.a peripheral portion 7 fixed to the panel 4, close to the break line 3, comprising a spout (not shown), and an inner part 8, forming a gripping loop, which is pressed against the upper surface of the central panel 4.
En pratique, cet anneau 6 permet à l'utilisateur d'exercer une traction sur le panneau central 4, de manière à rompre la ligne d'amorce de rupture 3 depuis la zone proximale ou amont 3ç précitée (attenante à l'organe de préhension 6), jusqu'à une zone distale ou aval située à l'opposé dudit anneau 6. Cette zone distale correspond ici au second tronçon transversal 3b_2 de la ligne de rupture 3, située à l'opposé du premier tronçon transversal 3b1 précité.In practice, this ring 6 allows the user to exert traction on the central panel 4, so as to break the breaking line 3 from the proximal zone or upstream 3c above (adjacent to the gripping member 6), to a zone distal or downstream located opposite said ring 6. This distal zone here corresponds to the second transverse section 3b_2 of the break line 3, located opposite the first transverse section 3b1 supra.
Lors de cette traction, l'anneau 6 progresse au moins approximativement sur la longueur et en regard d'une ligne générale de traction 9 définie sur le panneau central entre les zones proximale 3ç_ et distale 3b2.During this traction, the ring 6 progresses at least approximately along the length and facing a general traction line 9 defined on the central panel between the proximal zones 3c_ and distal 3b2.
Cette ligne générale de traction 9 est représentée sur la figure 1 , par une ligne en traits discontinus. Elle se compose ici de deux portions de forme générale rectiligne :This general traction line 9 is shown in FIG. 1, by a line in broken lines. It consists here of two portions of rectilinear general shape:
- une portion proximale 9a située du côté de la zone proximale 3ç de la ligne d'amorce de rupture 3, et orientée coaxialement ou au moins sensiblement coaxialement par rapport à l'axe longitudinal 6' de l'organe de préhension 6, eta proximal portion 9a located on the side of the proximal zone 3c of the breaking initiation line 3, and oriented coaxially or at least substantially coaxially with respect to the longitudinal axis 6 'of the gripping member 6, and
- une portion distale 9b située du côté de la zone distale 3b2 de ladite ligne de rupture 3, et orientée coaxialement ou au moins sensiblement coaxialement par rapport à l'axe médian 4' du panneau central 4 passant par ladite zone distale 3b2 (cet axe médian 4' s'étend ici parallèlement et entre les deux tronçons longitudinaux 3a de la ligne de rupture 3).a distal portion 9b located on the side of the distal zone 3b2 of said break line 3, and oriented coaxially or at least substantially coaxially with respect to the central axis 4 'of the central panel 4 passing through said distal zone 3b2 (this axis median 4 'extends here parallel and between the two longitudinal sections 3a of the break line 3).
Ces deux portions 9a et 9b de la ligne de traction 9 forment ici un angle, l'une par rapport à l'autre, en raison de la position de l'anneau 6 dans un angle de la ligne d'amorce de rupture 3. Elles sont reliées par une portion de jonction 9ç_, en forme générale d'arc de cercle : l'anneau passe normalement progressivement de la portion proximale 3a à la portion distale 3b.These two portions 9a and 9b of the traction line 9 form here an angle, relative to each other, because of the position of the ring 6 in an angle of the breaking line 3. They are connected by a junction portion 9c_, in the general shape of a circular arc: the ring normally passes gradually from the proximal portion 3a to the distal portion 3b.
Le panneau central 4 comporte encore des moulures ou empreintes, ici en creux (ou de manière alternative en bosse), adaptées pour rigidifier le panneau central 4.The central panel 4 further comprises moldings or indentations, here hollow (or alternatively hump), adapted to stiffen the central panel 4.
En l'occurrence, le panneau central 4 comporte une première moulure 10 dite « centrale » ou « interne », entourée par une seconde moulure 1 1 dite « périphérique », s'étendant le long et à proximité de la longueur de la ligne d'amorce de rupture 3. Ces moulures « interne » 10 et « périphérique » 1 1 sont ici continues ; de manière alternative, elles peuvent aussi être discontinues, l'une par rapport à l'autre et/ou en elles-mêmes. Ces moulures sont délimitées par des tronçons de moulure simples (un seul changement de hauteur) ; elles peuvent également être définies par des tronçons de moulure double, formant par exemple une simple nervure en creux ou en bosse.In this case, the central panel 4 comprises a first molding 10 called "central" or "internal", surrounded by a second molding 1 1 called "peripheral", extending along and close to the length of the line d 3. These "internal" and "peripheral" moldings 11 are here continuous; alternatively, they may also be discontinuous, one with respect to the other and / or in themselves. These moldings are delimited by simple sections of molding (a single change of height); they may also be defined by sections of double molding, forming for example a simple hollow or humped rib.
Conformément à l'invention, certains au moins des tronçons de moulure définissant la moulure centrale 10 sont agencés pour générer un effet de « selle » ou de « tuile » sur le panneau central 4 lors de son ouverture (c'est-à-dire un cintrage de ce panneau 4 transversalement par rapport à la ligne générale de traction 9, ou encore autrement dit, un cintrage naissant à partir des deux tronçons longitudinaux 3a de la ligne de rupture 3 avec un point haut au niveau de son axe médian 4'.According to the invention, at least some of the molding sections defining the central molding 10 are arranged to generate a "saddle" or "tile" effect on the central panel 4 during its opening (that is to say a bending of this panel 4 transversely to the general traction line 9, or in other words, incipient bending from the two longitudinal sections 3a of the break line 3 with a high point at its central axis 4 '.
Pour cela et comme développé ci-dessous, au moins deux des tronçons de la moulure interne 10 sont ménagés chacun d'un côté de la ligne générale de traction 9, et s'étendent de manière divergente par rapport à ladite ligne générale de traction 9 et également l'un par rapport à l'autre.For this and as developed below, at least two of the sections of the inner molding 10 are each formed on one side of the general traction line 9, and extend divergently with respect to said general traction line 9 and also relative to each other.
Plus précisément, la moulure interne 10 se compose de tronçons de moulures dits « proximaux » ou « amont » 10a et d'autres dits « distaux » ou « aval » 10b, s'étendant respectivement au niveau et de part et d'autre des portions proximale 9a et distale 9b de la ligne de traction 9.More specifically, the internal molding 10 is composed of sections of moldings called "proximal" or "upstream" 10a and others known as "distal" or "downstream" 10b, respectively extending at and on both sides of 9a and distal 9b proximal portions of the traction line 9.
Les tronçons distaux 10b de moulure interne 10 forment deux parties latérales de moulure 13 en forme général d'anse ou de U, qui sont ménagées chacune d'un côté de la portion distale 9b de la ligne générale de traction 9.The distal sections 10b of internal molding 10 form two lateral moldings parts 13 in the general shape of a loop or U, which are each formed on one side of the distal portion 9b of the general traction line 9.
Ces parties latérales de moulure 13 comprennent chacune (i) un tronçon de moulure intérieur 10b1 , côté ligne générale de traction 9, (ii) un tronçon de moulure extérieur 10b2, s'étendant dans l'espace séparant ledit tronçon intérieur 10b1 et la ligne d'amorce de rupture 3 en regard, et (iii) un tronçon de jonction 10b3, reliant les deux tronçons de moulures 10b1 et 10b2 au niveau de leur extrémité aval, située à distance de la ligne générale de traction 9 et à proximité de la zone distale 3b2 de la ligne d'amorce de rupture 3.These lateral molding parts 13 each comprise (i) an inner molding section 10b1, general traction line side 9, (ii) an outer molding section 10b2, extending in the space separating said inner section 10b1 and the line 3, and (iii) a junction section 10b3, connecting the two segments of moldings 10b1 and 10b2 at their downstream end, located at a distance from the general traction line 9 and close to the distal zone 3b2 of the rupture initiation line 3.
Ces sont ici les tronçons intérieurs 10b1 , et également extérieurs 10b2, qui constituent les tronçons divergents de moulure, aptes à générer l'effet de selle ou de tuile recherché.These are the inner sections 10b1, and also outer 10b2, which constitute the divergent sections of molding, able to generate the desired saddle effect or tile.
Ces tronçons intérieurs 10b1 et extérieurs 10b2 s'étendent de manière symétrique, ou au moins quasiment de manière symétrique, par rapport à la ligne générale de traction 9 et en particulier de sa portion distale 9b.These inner portions 10b1 and outer 10b2 extend symmetrically, or at least almost symmetrically, relative to the general line of traction 9 and in particular its distal portion 9b.
Ils s'étendent en regard et le long de quasiment toute la longueur de cette portion distale 9b, ici sur environ la moitié de la longueur du panneau 4.They extend opposite and along almost the entire length of this distal portion 9b, here about half the length of the panel 4.
Les tronçons intérieurs 10b1 s'étendent de manière rectiligne, ou au moins sensiblement de manière rectiligne.The inner portions 10b1 extend rectilinearly, or at least substantially rectilinearly.
Ils sont raccordés ensemble au niveau de leur extrémité amont, à proximité de la ligne générale de traction 9, par un tronçon de jonction 10b_4 (en forme générale d'arc de cercle) s'étendant au niveau et en travers de ladite ligne générale de traction 9.They are connected together at their upstream end, near the general traction line 9, by a junction section 10b_4 (in the general shape of a circular arc) extending at and across said general line of traction 9.
Ces tronçons intérieurs 10b1 forment ainsi ensemble une sorte de V, ouvert en direction de la zone distale de rupture 3b2 et dont l'axe de symétrie correspond à l'axe médian 4' du panneau 4.These inner portions 10b1 together form a kind of V, open towards the distal rupture zone 3b2 and whose axis of symmetry corresponds to the median axis 4 'of the panel 4.
Ces tronçons intérieurs 10b1 divergent l'une par rapport à l'autre, dans le sens amont vers aval (c'est-à-dire encore en direction de ladite zone distale de rupture 3b2). Les tronçons intérieurs 10b2 comportent deux parties s'étendant de manière rectiligne, ou au moins sensiblement de manière rectiligne : - une partie amont 10b2', divergeant par rapport à la ligne de traction 9 en regard, et - une partie aval 10b2", parallèle ou au moins sensiblement parallèle par rapport aux tronçons longitudinaux de rupture 3a1.These inner portions 10b1 diverge relative to each other in the upstream to downstream direction (i.e. still towards said distal rupture zone 3b2). The inner portions 10b2 comprise two parts extending rectilinearly, or at least substantially rectilinearly: - an upstream portion 10b2 ', diverging relative to the pulling line 9 opposite, and - a downstream portion 10b2 ", parallel or at least substantially parallel to the longitudinal sections of rupture 3a1.
Les parties amont 10b2' divergent également l'une par rapport à l'autre, dans le sens amont vers aval (c'est-à-dire encore en direction de ladite zone distale de rupture 3b_2).The upstream portions 10b2 'also diverge from each other in the upstream to downstream direction (i.e. still towards said distal rupture zone 3b_2).
De même, les deux tronçons de moulure 10b1 et 10b_2 (en particulier au niveau des parties amont 10b_2') d'une même partie latérale de moulure 13 divergent l'un par rapport à l'autre, depuis leurs extrémités amont à proximité de la ligne générale de traction 9 (côté amont de la portion distale 9b), jusqu'à leurs extrémités aval à distance de la ligne générale de traction 9 (côté aval de la portion distale 9b). Cette structure particulière vient renforcer encore l'effet de « tuile » ou de « selle » recherché.Likewise, the two sections of molding 10b1 and 10b_2 (in particular at the level of the upstream parts 10b_2 ') of the same lateral part of the molding 13 diverge relative to one another from their upstream ends near the general pulling line 9 (upstream side of the distal portion 9b), to their downstream ends away from the general pulling line 9 (downstream side of the distal portion 9b). This particular structure reinforces the effect of "tile" or "saddle" sought.
D'autre part, tel que représenté encore sur la figure 1 , les tronçons de moulure proximaux 10a sont ménagés également chacun d'un côté de la ligne générale de traction 9, principalement au niveau de sa portion proximale 9a et aussi de la portion de jonction 9ç. La fonction de ces tronçons 10a est de rigidifier le panneau 4, pour optimiser l'initiation de la déchirure de la ligne de rupture 3.On the other hand, as further shown in FIG. 1, the proximal molding sections 10a are each also formed on one side of the general traction line 9, mainly at the level of its proximal portion 9a and also of the portion of junction 9c. The function of these sections 10a is to stiffen the panel 4, to optimize the initiation of the tear of the rupture line 3.
Deux de ces tronçons de moulure proximaux 10a1 s'étendent à proximité et le long d'une partie de la ligne d'amorce de rupture 3. Ils présentent une forme identique, ou similaire, à la partie de ligne d'amorce de rupture 3 en regard.Two of these proximal trim sections 10a1 extend proximate and along a portion of the breakaway line 3. They have a shape identical to, or similar to, the breakaway line portion 3 opposite.
En l'occurrence, l'un des tronçons 10a1 ' (à droite sur la figure 1 , et en regard d'une partie du premier tronçon longitudinal de rupture 3a1 ) présente une simple forme rectiligne ; l'autre tronçon 10a1 " (à gauche sur la figure 1 , et en regard d'une partie des premier tronçon transversal 3b 1 et second tronçon longitudinal de rupture 3a2) a une forme générale de L.In this case, one of the sections 10a1 '(right in Figure 1, and facing a portion of the first longitudinal section of rupture 3a1) has a simple rectilinear shape; the other section 10a1 "(left in FIG. 1, and facing a portion of the first transverse section 3b 1 and the second longitudinal rupture section 3a2) has a general shape of L.
Ces deux tronçons de moulure proximaux 10a1 sont ici chacun raccordés, via une jonction courbe, à l'extrémité amont du tronçon extérieur 10b_2 de l'une des parties latérales de moulure 13.These two proximal molding sections 10a1 are here each connected, via a curved junction, to the upstream end of the outer section 10b_2 of one of the lateral molding parts 13.
Cette jonction est en l'occurrence réalisée par un tronçon de moulure 10a2, rectiligne ou au moins sensiblement rectiligne, convergeant l'un vers l'autre dans le sens proximal vers distal. Ces tronçons convergents 10a2 permettent en particulier de renforcer le caractère divergents des tronçons 10b1 et 10b_2 des parties latérales distales 13.This junction is in this case carried out by a section of molding 10a2, rectilinear or at least substantially rectilinear, converging towards each other in the proximal to distal direction. These convergent sections 10a2 make it possible in particular to reinforce the divergent nature of the sections 10b1 and 10b_2 of the distal lateral portions 13.
Par ailleurs et comme abordé ci-dessus, le panneau central 4 comporte encore des tronçons de moulure périphérique 1 1 qui longent la ligne de rupture 3.Moreover and as discussed above, the central panel 4 further comprises peripheral molding sections 1 1 which run along the breaking line 3.
A titre indicatif, la largeur séparant ces tronçons périphériques de moulure 1 1 et ladite ligne d'amorce de rupture 3 est comprise avantageusement entre 0,5 et 5 mm. Ces tronçons de moulure périphériques 1 1 sont reliés à l'extrémité amont des tronçons interne proximaux 10a, de sorte à former ensemble la moulure continue unique.As an indication, the width separating these peripheral sections of molding 1 1 and said breaking initiation line 3 is advantageously between 0.5 and 5 mm. These peripheral molding sections 1 1 are connected to the upstream end of the proximal inner sections 10a, so as to form together the single continuous molding.
Les deux liaisons 14 entre les tronçons internes 10 et les tronçons périphériques 1 1 (au niveau de leurs extrémités proximales) se situent à distance l'une de l'autre, et de part et d'autre de la ligne de traction 9 ; elles sont localisées encore en dehors de l'encombrement de l'anneau 6 et à distance de la zone proximale de rupture 3ç.The two links 14 between the inner sections 10 and the peripheral sections 11 (at their proximal ends) are located at a distance from each other, and on either side of the traction line 9; they are located again outside the bulk of the ring 6 and at a distance from the proximal rupture zone 3c.
Ces deux liaisons 14 sont positionnées sur une ligne 15 s'étendant transversalement à l'axe longitudinal 6' de l'organe de préhension 6, pour favoriser le pliage du panneau central 4 au niveau de ladite ligne transversale 15 lors d'une manœuvre de soulèvement dudit organe de préhension 6.These two links 14 are positioned on a line 15 extending transversely to the longitudinal axis 6 'of the gripping member 6, to promote the folding of the central panel 4 at the level of said transverse line 15 during a maneuver of lifting of said gripping member 6.
Sur la figure 1 , on remarque encore la présence d'une moulure circulaire 16, localisée entre les tronçons de moulure proximaux 10a et sur l'axe de cheminement 9 de l'anneau 6. Cette moulure 16 est en plus destinée à se situer au niveau de la boucle 8 de l'anneau 6 pour faciliter sa préhension par le consommateur lors de l'ouverture de la boîte.In FIG. 1, there is still the presence of a circular molding 16, located between the proximal molding sections 10a and on the tracking axis 9 of the ring 6. This molding 16 is also intended to be located at level of the loop 8 of the ring 6 to facilitate its grip by the consumer when opening the box.
En pratique, l'ouverture du couvercle est mise en œuvre d'une manière classique, par traction sur l'anneau 6 dédié, cela dans le sens proximal - distal.In practice, the opening of the lid is implemented in a conventional manner, by pulling on the dedicated ring 6, that in the proximal-distal direction.
Lors de cette traction, cet anneau 6 se déplacement sensiblement selon la ligne générale de traction 9 décrite en détails ci-dessus.During this traction, this ring 6 moves substantially along the general traction line 9 described in detail above.
C'est en particulier au niveau de la portion distale 9b de cette ligne de traction 9 que les deux parties latérales de moulures 13 vont produire l'effet de selle ou de tuile recherché. Le rendement de l'énergie de traction, pour ce qui est de la déchirure de la ligne de rupture, est en particulier amélioré par rapport au couvercle muni de moulures dont les tronçons s'étendent parallèlement par rapport à la ligne de traction.It is particularly at the level of the distal portion 9b of this traction line 9 that the two lateral portions of moldings 13 will produce the desired saddle or tile effect. In particular, the efficiency of the tensile energy with respect to tearing of the rupture line is improved with respect to the lid provided with moldings whose sections extend parallel to the pulling line.
Selon un mode alternatif de réalisation (non représenté), l'anneau 6 peut être placé au milieu, ou au moins sensiblement au milieu du tronçon transversal 3b1 de la ligne de rupture. Cet anneau 6 est ainsi orienté de sorte de que son axe 6' soit coaxial par rapport à l'axe médian 4' du panneau 4.According to an alternative embodiment (not shown), the ring 6 can be placed in the middle, or at least substantially in the middle of the transverse section 3b1 of the break line. This ring 6 is thus oriented so that its axis 6 'is coaxial with respect to the median axis 4' of the panel 4.
Dans ce cas, la ligne de cheminement 9 de l'anneau 6 est rectiligne, ou au moins quasiment rectiligne. Les moulures de rigidification interne 10 peuvent alors être formées par les deux parties latérales 13 qui s'étendent sur quasiment toute la longueur du panneau 4, pour obtenir un effet « selle » optimal. In this case, the path line 9 of the ring 6 is rectilinear, or at least almost rectilinear. The internal stiffening moldings 10 can then be formed by the two lateral parts 13 which extend over almost the entire length of the panel 4, to obtain an optimal "saddle" effect.

Claims

- REVENDICATIONS - - CLAIMS -
1.- Couvercle métallique pour un corps de contenant, en particulier pour un contenant du genre boîte de conserve métallique, lequel couvercle (1 ) comprend (i) une partie périphérique (2) pour son assemblage sur ledit corps de contenant et (ii) une partie centrale (4) formant panneau central d'obturation, délimitée et raccordée à ladite partie périphérique (2) par l'intermédiaire d'une ligne d'amorce de rupture (3), lequel panneau central (4) est équipé, au niveau de l'une de ses surfaces, d'un organe de préhension (6) composé de deux parties par lesquelles passe un axe longitudinal de symétrie (6') : - une première partie (7) solidarisée avec ledit panneau central (4) et - une seconde partie (8) de préhension proprement dite, lequel organe de préhension (6) permet d'exercer une traction sur ledit panneau central (4) pour rompre ladite ligne d'amorce de rupture (3) depuis une zone proximale (3ç_) attenante audit organe de préhension (6), jusqu'à une zone distale (3b_2) à l'opposé dudit organe de préhension1.- Metal lid for a container body, in particular for a container of the metal cans type, which cover (1) comprises (i) a peripheral portion (2) for its assembly on said container body and (ii) a central portion (4) forming a central closure panel, delimited and connected to said peripheral portion (2) via a breaking initiation line (3), which central panel (4) is equipped with level of one of its surfaces, a gripping member (6) consisting of two parts through which passes a longitudinal axis of symmetry (6 '): - a first portion (7) secured to said central panel (4) and - a second gripping portion (8) itself, which gripping member (6) makes it possible to exert traction on said central panel (4) to break said breaking initiation line (3) from a proximal zone (4) ( 3c_) adjacent said gripping member (6), to a distal zone (3b_2) opposite said gripping member
(6), lequel organe de préhension (6) est destiné à progresser, lors de cette traction, au moins approximativement sur la longueur et en regard d'une ligne générale de traction (9) définie sur ledit panneau central (4) entre lesdites zones proximale (3ç) et distale (3b2), lequel panneau central (4) comporte encore une ou plusieurs moulures internes (10) formées de tronçons de moulure (10a, 10b), agencées pour renforcer sa résistance au pliage au moins selon des lignes transversales à ladite ligne générale de traction (9), au moins deux desdits tronçons internes de moulure (10b1 , 10b2) étant ménagés chacun d'un côté de ladite ligne générale de traction (9), caractérisé en ce que lesdits tronçons internes de moulure (10b) forment deux parties latérales de moulure (13) qui sont ménagées chacune d'un côté de ladite ligne générale de traction (9), lesquelles parties latérales de moulure (13) comprennent chacune (i) un tronçon de moulure intérieur (10b1 ), côté ligne générale de traction (9), et (ii) un tronçon de moulure extérieur (10b_2), s'étendant dans l'espace séparant ledit tronçon intérieur (10b1 ) et ladite ligne d'amorce de rupture en regard (3), et en ce que lesdits tronçons intérieurs (10b1) et/ou extérieurs (10b_2) des deux parties latérales de moulure (13) s'étendent de manière divergente par rapport à ladite ligne générale de traction (9) et également l'un par rapport à l'autre, constituant des tronçons divergents de moulure.(6), which gripping member (6) is intended to progress, during this traction, at least approximately along the length and facing a general traction line (9) defined on said central panel (4) between said proximal (3c) and distal (3b2) zones, which central panel (4) further comprises one or more internal moldings (10) formed of sections of molding (10a, 10b), arranged to reinforce its folding resistance at least along lines transverse to said general traction line (9), at least two of said internal molding sections (10b1, 10b2) being each formed on one side of said general traction line (9), characterized in that said internal sections of molding (10b) form two lateral molding parts (13) each of which is provided on one side of said general pulling line (9), which side molding parts (13) each comprise (i) an inner molding section (10b1 ) general traction line side (9), and (ii) an outer molding section (10b_2), extending in the space separating said inner section (10b1) and said opposite rupture initiation line (3), and in that said inner (10b1) and / or outer (10b_2) sections of the two molding side portions (13) extend divergently with respect to said general draw line (9) and also relative to said to the other, constituting divergent sections of molding.
2.- Couvercle selon la revendication 1 , caractérisé en ce que les tronçons intérieur (10b1 ) des deux parties latérales de moulure (13) s'étendent de manière divergente par rapport à ladite ligne générale de traction (9) et également l'un par rapport à l'autre, et en ce que les tronçons extérieurs (10b2) des deux parties latérales de moulure (13) s'étendent de manière divergente par rapport à ladite ligne générale de traction (9) et également l'un par rapport à l'autre, lesquels tronçons intérieurs (10b1 ) et extérieurs (10b2) des deux parties latérales de moulure (13) constituent les tronçons divergents de moulure.2. Lid according to claim 1, characterized in that the inner sections (10b1) of the two lateral molding parts (13) extend divergently with respect to said general traction line (9) and also one relative to each other, and in that the outer sections (10b2) of the two lateral molding parts (13) extend diverging with respect to said general traction line (9) and also with respect to each other, which inner (10b1) and outer (10b2) portions of the two lateral molding parts (13) constitute the divergent sections of molding .
3.- Couvercle selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que les tronçons intérieurs (10b1 ) et/ou extérieurs (10b2) des deux parties latérales de moulure (13) s'étendent de manière divergente par rapport à ladite ligne générale de traction (9) et également l'un par rapport à l'autre, en direction de la zone distale (3b2) de la ligne d'amorce de rupture (3).3. Lid according to any one of claims 1 or 2, characterized in that the inner sections (10b1) and / or outer (10b2) of the two side molding portions (13) extend divergently with respect to said general traction line (9) and also with respect to each other, towards the distal zone (3b2) of the breaking initiation line (3).
4.- Couvercle selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les tronçons intérieurs (10b1 ) des deux parties latérales de moulure (13) sont raccordés au niveau d'une première extrémité à proximité de la ligne générale de traction (9), par un premier tronçon de jonction (10b_4) s'étendant au niveau de la ligne générale de traction (9), et en ce que les deux tronçons (10b1 , 10b_2) de chacune desdites parties latérales de moulure (13) sont reliés par un second tronçon de jonction (10b_3), au niveau de leur seconde extrémité située à distance de la ligne générale de traction (9) et à proximité de la ligne d'amorce de rupture (3).4. Lid according to any one of claims 1 to 3, characterized in that the inner sections (10b1) of the two lateral portions of the molding (13) are connected at a first end near the general line of traction (9), by a first connecting section (10b_4) extending at the general traction line (9), and in that the two sections (10b1, 10b_2) of each of said lateral molding parts (13) ) are connected by a second joining section (10b_3) at their second end located away from the general pulling line (9) and close to the breaking initiation line (3).
5.- Couvercle selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les deux tronçons de moulure (10b1 , 10b2) d'une même partie latérale de moulure (13) divergent, l'un par rapport à l'autre, depuis leurs extrémités à proximité de ladite ligne générale de traction (9), jusqu'à leurs extrémités à distance de la ligne générale de traction (9).5. Lid according to any one of claims 1 to 4, characterized in that the two sections of molding (10b1, 10b2) of the same side portion of the molding (13) diverge, one relative to the other, from their ends near said general traction line (9), to their ends remote from the general traction line (9).
6.- Couvercle selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les tronçons divergents de moulure (10b1 , 10b2) s'étendent de manière rectiligne, ou au moins sensiblement de manière rectiligne, sur au moins une partie de leur longueur.6. Cover according to any one of claims 1 to 5, characterized in that the diverging sections of molding (10b1, 10b2) extend in a rectilinear manner, or at least substantially rectilinearly, on at least a portion of their length.
7.- Couvercle selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les tronçons divergents de moulure (10b1 , 10b2) s'étendent de manière symétrique, ou au moins sensiblement de manière symétrique, par rapport à la ligne générale de traction (9).7. Lid according to any one of claims 1 to 6, characterized in that the diverging sections of molding (10b1, 10b2) extend symmetrically, or at least substantially symmetrically, with respect to the general line. traction (9).
8.- Couvercle selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la ligne générale de traction (9) se compose d'au moins deux portions :8. Lid according to any one of claims 1 to 7, characterized in that the general line of traction (9) consists of at least two portions:
- une portion proximale (9a) du côté de la zone proximale (3ç) de la ligne d'amorce de rupture (3), et orientée coaxialement ou au moins sensiblement coaxialement par rapport à l'axe longitudinal (6') de l'organe de préhension (6), eta proximal portion (9a) on the side of the proximal zone (3c) of the rupture initiation line (3), and oriented coaxially or at least substantially coaxially with respect to the longitudinal axis (6 ') of the gripping member (6), and
- une portion distale (9b) du côté de la zone distale (3ç2) de ladite ligne d'amorce (3), et orientée coaxialement ou au moins sensiblement coaxialement par rapport à un axe médian (4') du panneau central (4) passant par ladite zone distale (3ç2), et en ce que les tronçons divergents de moulure (10b1 , 10b2) sont ménagés au niveau de ladite portion distale (9b) de la ligne générale de traction (9).a distal portion (9b) on the side of the distal zone (3c2) of said initiation line (3), and oriented coaxially or at least substantially coaxially with respect to a central axis (4 ') of the central panel (4) passing through said distal zone (3c2), and in that the diverging segments of the molding (10b1, 10b2) are provided at said distal portion (9b) of the general traction line (9).
9.- Couvercle selon la revendication 8, caractérisé en ce qu'au moins deux autres tronçons de moulure (10a) sont ménagés chacun d'un côté de la portion proximale (9a) de la ligne générale de traction (9), lesquels tronçons de moulure proximaux (9a) s'étendent à proximité et le long d'une partie de la ligne d'amorce de rupture (3).9. Lid according to claim 8, characterized in that at least two other sections of molding (10a) are each formed on one side of the proximal portion (9a) of the general pulling line (9), which proximal molding sections (9a) extend in proximity to and along a portion of the breaking initiation line (3).
10.- Couvercle selon la revendication 9 en combinaison avec la revendication 1 , caractérisé en ce que les tronçons de moulure proximaux (10a) sont chacun raccordés à la première extrémité du tronçon extérieur (10b2) de l'une des parties latérales de moulure (13).10. Cover according to claim 9 in combination with claim 1, characterized in that the proximal molding sections (10a) are each connected to the first end of the outer section (10b2) of one of the lateral portions of the molding ( 13).
1 1 .- Couvercle selon l'une quelconque des revendications 1 à 10, caractérisé en ce que les deux tronçons divergents de moulure (10b_1 , 10b_2) s'écartent dans le sens proximal vers distal de la ligne générale de traction (9).1 1 .- Lid according to any one of claims 1 to 10, characterized in that the two divergent sections of molding (10b_1, 10b_2) deviate in the direction proximal to distal of the general line of traction (9).
12.- Couvercle selon la revendication 1 1 , caractérisé en ce que le panneau central (4) est d'une forme générale non circulaire, délimitée par une ligne d'amorce de rupture (3) comprenant deux tronçons longitudinaux (3a) reliés par deux tronçons transversaux (3b), en ce que l'organe de préhension (6) est fixé au niveau d'un angle de ladite ligne d'amorce de rupture (3) correspondant à la jonction entre un premier tronçon transversal (3b1 ) et un premier tronçon longitudinal (3a1 ) de ladite ligne d'amorce de rupture (3), pour former sa zone proximale de rupture (3ç), et en ce que les deux tronçons divergents de moulure (10b1 , 10b2) s'écartent en partant de la ligne générale de traction (9), en direction du second tronçon transversal (3b2) de ladite ligne d'amorce de rupture (3) formant la zone distale de rupture.12. Lid according to claim 1 1, characterized in that the central panel (4) is of a generally non-circular shape, delimited by a breaking initiation line (3) comprising two longitudinal sections (3a) connected by two transverse sections (3b), in that the gripping member (6) is fixed at an angle of said breaking initiation line (3) corresponding to the junction between a first transverse section (3b1) and a first longitudinal section (3a1) of said breaking initiation line (3), to form its proximal rupture zone (3c), and in that the two divergent segments of the molding (10b1, 10b2) depart from each other the general traction line (9), in the direction of the second transverse section (3b2) of said breaking initiation line (3) forming the distal rupture zone.
13.- Couvercle selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le panneau central (4) comporte encore des tronçons de moulure (1 1 ) s'étendant le long et à proximité d'au moins une partie de la longueur de la ligne d'amorce de rupture (3), et en ce que les tronçons internes (10) et périphériques (1 1 ) de moulure du panneau central (4) sont reliés les uns aux autres de sorte à former ensemble une moulure continue unique. 13. Lid according to any one of claims 1 to 12, characterized in that the central panel (4) further comprises molding sections (1 1) extending along and near at least a portion of the length of the breaking initiation line (3), and in that the internal (10) and peripheral (1 1) portions of the central panel (4) are connected to one another so as to form together a unique continuous molding.
EP10731770A 2009-05-20 2010-05-19 Metal cover with stiffening moldings for a container body Not-in-force EP2432703B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10731770T PL2432703T3 (en) 2009-05-20 2010-05-19 Metal cover with stiffening moldings for a container body

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0902496A FR2945794A1 (en) 2009-05-20 2009-05-20 METAL COVER FOR A CONTAINER BODY WITH RIGIDIFICATION MOLDING (S)
PCT/FR2010/050973 WO2010133809A1 (en) 2009-05-20 2010-05-19 Metal cover with stiffening moldings for a container body

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EP2432703A1 true EP2432703A1 (en) 2012-03-28
EP2432703B1 EP2432703B1 (en) 2013-03-13

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JP (1) JP2012527381A (en)
KR (1) KR20120042741A (en)
BR (1) BRPI1012865A2 (en)
CL (1) CL2011002932A1 (en)
DK (1) DK2432703T3 (en)
ES (1) ES2409275T3 (en)
FR (1) FR2945794A1 (en)
HR (1) HRP20130472T1 (en)
MA (1) MA33484B1 (en)
PL (1) PL2432703T3 (en)
PT (1) PT2432703E (en)
WO (1) WO2010133809A1 (en)

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Publication number Priority date Publication date Assignee Title
IT201800004841A1 (en) * 2018-04-24 2019-10-24 METAL CONTAINER WITH VARIABLE RESISTANCE LID FOR EASY OPENING.
FR3088913B1 (en) * 2018-11-27 2021-07-02 Ardagh Mp Group Netherlands Bv Lid for a container body, in particular for a tin can type container
FR3088914B1 (en) * 2018-11-27 2020-11-20 Ardagh Mp Group Netherlands Bv Lid for a container body, in particular for a tin can type container
GB2580900B (en) * 2019-01-23 2021-05-19 Crown Packaging Technology Inc Can end with ribs to increase panel stiffness

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US3874553A (en) * 1973-07-19 1975-04-01 Aluminum Co Of America Easy opening can end with embossed panel
US4394927A (en) * 1981-09-14 1983-07-26 General Can Company, Inc. Metallic convenience closure
DE3535226A1 (en) * 1985-10-02 1987-04-16 Schmalbach Lubeca SHEET LID FOR UNROUNDERED CAN, ESP. LANGOVALE CAN IN HANSA FORMAT
US4826037A (en) * 1987-12-01 1989-05-02 American National Can Company Full open end
DE19620448C2 (en) * 1996-05-21 2001-07-05 Rasselstein Hoesch Gmbh Process for producing an easy-to-open can lid
ES2238116B1 (en) * 2002-11-07 2006-12-01 Mivisa Envases, S.A.U. EASY OPEN COVER.
US20040099665A1 (en) * 2002-11-27 2004-05-27 Mceldowney Carl F. Easy-opening can end and a conversion press and tools for producing the same

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Also Published As

Publication number Publication date
BRPI1012865A2 (en) 2016-04-05
PL2432703T3 (en) 2013-08-30
ES2409275T3 (en) 2013-06-26
HRP20130472T1 (en) 2013-06-30
JP2012527381A (en) 2012-11-08
DK2432703T3 (en) 2013-06-10
CL2011002932A1 (en) 2012-05-11
KR20120042741A (en) 2012-05-03
PT2432703E (en) 2013-06-06
MA33484B1 (en) 2012-08-01
WO2010133809A1 (en) 2010-11-25
FR2945794A1 (en) 2010-11-26
EP2432703B1 (en) 2013-03-13

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