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EP2607256A1 - Container with peelable blocking membrane, intended for holding a powder product and intended for having a higher internal pressure - Google Patents

Container with peelable blocking membrane, intended for holding a powder product and intended for having a higher internal pressure Download PDF

Info

Publication number
EP2607256A1
EP2607256A1 EP11306710.2A EP11306710A EP2607256A1 EP 2607256 A1 EP2607256 A1 EP 2607256A1 EP 11306710 A EP11306710 A EP 11306710A EP 2607256 A1 EP2607256 A1 EP 2607256A1
Authority
EP
European Patent Office
Prior art keywords
flange
container
sealing
passage
container according
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.)
Withdrawn
Application number
EP11306710.2A
Other languages
German (de)
French (fr)
Inventor
David Breton
Alain Le Talludec
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 EP11306710.2A priority Critical patent/EP2607256A1/en
Priority to JP2014548026A priority patent/JP2015501768A/en
Priority to CN201280063397.8A priority patent/CN104010944A/en
Priority to US14/366,454 priority patent/US20150014317A1/en
Priority to BR112014014969A priority patent/BR112014014969A2/en
Priority to AU2012356985A priority patent/AU2012356985A1/en
Priority to RU2014129809A priority patent/RU2014129809A/en
Priority to EP12808386.2A priority patent/EP2794408A1/en
Priority to PCT/EP2012/076444 priority patent/WO2013092891A1/en
Publication of EP2607256A1 publication Critical patent/EP2607256A1/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/0202Removable lids or covers without integral tamper element
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D17/00Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/50Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
    • B65D17/501Flexible tape or foil-like material
    • B65D17/502Flexible tape or foil-like material applied to the external part of the container wall only
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D11/00Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
    • B65D11/02Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material of curved cross-section
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D11/00Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
    • B65D11/20Details of walls made of plastics material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D47/00Closures with filling and discharging, or with discharging, devices
    • B65D47/04Closures with discharging devices other than pumps
    • B65D47/06Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/10Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having frangible closures
    • B65D47/103Membranes with a tearing element
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D51/00Closures not otherwise provided for
    • B65D51/18Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2205/00Venting means
    • B65D2205/02Venting holes
    • B65D2205/025Venting holes having a removable label, sticker or adhesive foil covering the hole
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2251/00Details relating to container closures
    • B65D2251/0003Two or more closures
    • B65D2251/0006Upper closure
    • B65D2251/0018Upper closure of the 43-type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2251/00Details relating to container closures
    • B65D2251/0003Two or more closures
    • B65D2251/0068Lower closure
    • B65D2251/0093Membrane
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2517/00Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001Details
    • B65D2517/0091Means for venting upon initial opening
    • B65D2517/0094Means for venting upon initial opening formed as a separate opening

Definitions

  • the present invention relates to the field of containers, in particular of the kind cans, containing a peelable sealing membrane.
  • “Easy opening” containers generally comprise a flange to form a sealing pad, on which a peelable sealing membrane is secured by means of a sealing bead (or band).
  • This collar is sometimes made in one piece with the container body.
  • the container is equipped with an attached lid which comprises a support ring (or ring) on which is secured the peelable sealing membrane, through the sealing bead.
  • an attached lid which comprises a support ring (or ring) on which is secured the peelable sealing membrane, through the sealing bead.
  • the support ring has an internal part forming the collar; and the outer contour of the bottom face of the peelable membrane is sealed on the upper face of this flange through the peripheral sealing bead.
  • the closure membrane is generally provided with a pull tab allowing the transmission of the force applied by the user (and the energy generated), for the purpose of opening the container.
  • This traction action thus allows a gradual degradation of the sealing bead (peeling action) from a rupture initiation zone located at this pull tab.
  • This type of container is sometimes used for the packaging of powdered product (also called “powdery product”), for example powdered infant formula, ground coffee or soluble coffee, or even any other dehydrated powder product.
  • powdered product also called “powdery product”
  • powdered infant formula for example powdered infant formula, ground coffee or soluble coffee, or even any other dehydrated powder product.
  • a protective atmosphere eg nitrogen
  • the conditioned product in particular ground coffee
  • a degassing phenomenon for example carbon dioxide
  • the container thus has a state of internal overpressure.
  • this phenomenon is more likely to produce in particular (i) an unexpected noise for the consumer and / or (ii) a thrust force on the sealing diaphragm.
  • the Applicant proposes a new container structure capable of releasing the internal overpressure during the initiation of the coat. of the peelable membrane, while limiting or eliminating the aforementioned problems (in particular any phenomenon of product projection).
  • the passage in question consists of at least one orifice formed through the collar, between its inner and outer edges.
  • the orifices together advantageously define a passage whose surface is between 0.5 and 30 mm 2 .
  • the or orifices advantageously have a generally circular shape whose diameter is between 0.5 and 1 mm, and they are 1 to 10 in number.
  • the orifices are each an elongated slot, whose length is between 10 and 20 mm and whose width is between 0.5 and 3 mm.
  • or the orifices formed in the collar are in the bulk of the sealing bead.
  • This sealing bead then advantageously comprises at least one unsealed internal zone in which said orifice or said openings are formed.
  • the gas passage may be provided between an inner edge of the sealing bead and an inner edge of the flange.
  • the passage consists of a notch formed from said inner edge of the collar and which extends towards its outer edge.
  • the sealing bead is advantageously widened to preserve a sufficient sealing force.
  • the Applicant also proposes a sealing bead whose level of force and energy is reduced to the beginning of peeling, while preserving a sufficient bonding force of the sealing membrane on the flange.
  • the sealing bead comprises a rupture initiation zone formed at the level of said pull tab; this rupture initiation zone comprises a protruding portion of said outer edge of said sealing bead which forms a local protuberance extending towards said outer edge of said flange. And at least one of the aforementioned gas passages is provided at this rupture initiation zone.
  • Such a structure provides a significant reduction in the effort required to initiate the rupture of the sealing bead by traction on the tongue of the sealing diaphragm; and it thus facilitates the initiation / initiation of the peeling of this sealing membrane.
  • the container advantageously comprises an attached ring having - an outer part, adapted to be fixed on a border of the container body delimiting said opening to be closed, and - an inner part forming the collar, intended to extend around the periphery said opening to be closed.
  • the flange is made in one piece with the side wall of the container body.
  • the present invention also relates to the ring for a closure cap, possibly equipped with a peelable sealing membrane, as defined above.
  • the lid 1 according to the invention ( Figures 1 to 3 ) is adapted to be mounted on a container body 2 during the manufacture of a container 3 ( figure 1 ).
  • container 3 is useful for packaging powdered foodstuffs (also called “powdery”).
  • the container body 2 has a side wall 4 which is here of circular section (but which could be of any other configuration, size and section).
  • the container body 2 is made of metal, in particular steel or aluminum, chosen in particular depending on the product to be packaged.
  • This container body 2 further comprises a bottom wall (not visible), made in one piece with the lateral wall 4 or attached thereto (for example by crimping).
  • the lid 1, shown on the Figures 1 to 3 is here adapted to be attached to this container body 2 of circular section.
  • This cover 1 could also be adapted to be mounted on a body 2 having another shape / section for example oval, square, rectangular, oblong, etc. ; its general form would then be adapted accordingly.
  • the cover 1 is secured hermetically at an end edge 5 of the side wall 4 which defines an upper opening 6 of the container body 2.
  • This joining can be carried out by any appropriate technique, for example by crimping.
  • the lid 1 according to the invention comprises (i) a ring (or ring) for mounting 10 and (ii) a peelable sealing membrane 11, hermetically fixed on said ring 10.
  • This mounting ring 10 advantageously consists of a metal part, for example made of steel or aluminum.
  • this ring 10 has a generally annular or circular shape.
  • the inner 14 and outer edges 16 of the flange 13 extend here approximately parallel to each other, giving it an almost constant width over its entire circumference.
  • the outer edge 16 is circular and centered on a through axis A ; and on its side, the inner edge 14 is circular and slightly off-center with respect to this outer edge 16, with an offset of its axis through B relative to the aforementioned through axis A.
  • annular flange 13 extends here in a plane, perpendicular to the axis above / below the lid 1. According to an alternative embodiment not shown, this annular collar 13 could also have a generally frustoconical shape, with its inner edge 14 offset to the outside (on the side of its upper face 17) relative to the outer edge 16.
  • the flange 13 of the ring 10 is provided with a passage 18 for the circulation of gas.
  • the passage 18 consists of several orifices 181 formed through the collar 13 of the ring 10, between its inner and outer edges 14 and 16.
  • the orifices 181, here four in number (but advantageously in a number between 1 and 10), are through. They open each through the upper 17 and lower faces of the collar 13, to define conduits between the internal volume of the container 3 and the external environment.
  • These orifices 181 are formed close to each other, along a rectilinear virtual line (but they could equally well be formed for example on a curved virtual line, or in a staggered arrangement).
  • the orifices 181 here each have a generally circular shape whose diameter is between 0.5 mm and 1 mm (this shape may be oval, ovoid or elongate).
  • These orifices 181 thus together define a passage 18 whose surface is advantageously between 0.5 and 30 mm 2 .
  • the sealing diaphragm 11, shown on the Figures 1 and 2 is, for example, of the type described in the document EP-1 878 666 .
  • This closure membrane 11 may further comprise any other layer of material, adapted according to the desired functionalities (for example an adhesive layer or a layer of peeling layer called “peeling layer”).
  • the sealing diaphragm 11 further comprises a pull tab 23 (or a gripping ring) to ensure its manual peeling relative to the ring 10.
  • This pull tab 23 is advantageously made in one piece with the membrane 11, and it consists of an extension of material.
  • the pull tab 23 is attached to the sealing diaphragm 11, directly or indirectly (the membrane 11 is then obtained by assembling at least two parts).
  • the pull tab 23 is advantageously folded facing and against the upper face 21 of the sealing diaphragm 11 (as represented very schematically on the figure 3 ).
  • this closure membrane 11 may be provided with several pull tabs 23 (at least two), suitably distributed.
  • the longitudinal axis of symmetry 23 'of this pull tab 23 (passing between its inner and outer ends) then extends radially, or at least approximately radially ( figure 3 ).
  • the sealing membrane 11 is hermetically fixed on the ring 10, advantageously by a connection of the bonding and / or welding type (for example a thermo-welding technique), so as to close off its central lumen 15.
  • the outer contour of the bottom face 20 of this sealing diaphragm 11 is here secured hermetically to the upper face 17 of the annular flange 13 of the ring 10 by means of a peripheral sealing bead 27.
  • This sealing bead 27 thus constitutes a hermetic continuous band, extending over the entire circumference of the associated flange 13.
  • the inner 28 and outer 29 edges here each have a generally circular shape, oval or ovoid, extending parallel or at least approximately parallel to one another.
  • the sealing bead 27 has a rupture initiation zone 31 which is arranged to reduce the force required to initiate its breaking by pulling on the tongue 23 provided for this purpose. , and which thus makes it easier to initiate the peeling of the sealing diaphragm 11 with respect to the ring 10.
  • the rupture initiation area 31 of the sealing bead 27 comprises for this purpose an outer projecting section 32 formed at the outer edge 29.
  • This protruding section 32 forms a local protuberance with respect to the outer edge 29 of the sealing bead 27, which extends towards the outer edge 16 of the collar 13.
  • the projecting section 32 then forms a local part protruding towards the periphery, with respect to a continuous virtual line 33 defined by the general shape of the outer edge 29 ( figure 4 ).
  • this protruding section 32 of the rupture initiation zone 31 has a shape that widens in a direction extending from the outer edge 16 towards the inner edge 14 of the flange 13.
  • This projecting section 32 here has a general shape of tip, with an outer end 34 formed at the outer edge 16 of the collar 13 and also at the peripheral edge 22 of the sealing membrane 11 that covers it.
  • This pointed protruding section 32 is here defined by two rectilinear, or at least approximately rectilinear, outer sides 35 which diverge from the outer end 34.
  • the protruding section 32 of the rupture initiation zone 31 comprises an axis of symmetry 32 'which extends coaxially (or at least approximately coaxially) with respect to the longitudinal axis 23' of the tongue of FIG. overlying traction 23 ( Figures 3 and 4 ).
  • the inner edge 28 of the sealing bead 27 comprises, opposite the outer projecting section 32 mentioned above, a concave section 37 extending towards the outer edge 16 of the collar 13 to form a local clearance.
  • This particular structure aims to avoid local enlargement of the sealing bead 27 at this rupture initiation zone 31, with an inherent increase in the force required for opening.
  • the passage 18 of the flange 13 is formed in the space 30 of the sealing bead 27 (between the inner and outer edges 29 of the latter), opposite the pull tab 23.
  • this passage 18 is here provided in the bulk of the rupture initiation zone 31, between its outer and inner portions 32 and 37.
  • this rupture initiation zone 31 is here useful to remedy any enlargement of the sealing bead 27 at this level (this widening of the sealing bead may be useful to compensate for a possible weakness of the fastening force).
  • the orifices 181 of this passage 18 are additionally arranged symmetrically or at least approximately symmetrically with respect to the axis 32 'of the rupture initiation zone 31 and to the longitudinal axis 23' of the tongue of FIG. traction 23 ( Figures 3 and 4 ).
  • such a rupture initiation zone 31 of the sealing bead 27 could be provided on a container 3 whose collar 13 (monobloc or insert) would be devoid of any passage 18 above.
  • the flange 13 advantageously comprises a variable width, with an enlarged segment 13 '( figure 3 ) at the passage 18 and, where appropriate, the rupture initiation zone 31, so as to facilitate their development.
  • the traversing axis B of the inner edge 14 of the flange 13 is here off-center with respect to the axis A through its outer edge 16, with an offset of its axis through B to opposite of this passage 18 and of this rupture initiation zone 31 ( figure 3 ).
  • These traversing axes A and B advantageously extend, at least approximately, on the longitudinal axis of symmetry 32 'of the projecting section 32 and the axis of symmetry 23' of the pull tab 23.
  • the cover 1 according to the invention is produced on a first manufacturing site.
  • the ring 10 and the peelable membrane 11 are manufactured independently of one another by techniques known to those skilled in the art.
  • the passage or passages 18 may be formed in the flange 13 of the ring 10 by any suitable machining technique (for example by drilling, stamping or pointing).
  • sealing bead 27 can then be assembled for example by a heat-sealing technique, to form the sealing bead 27 described above.
  • the particular shape of the sealing bead 27, with its rupture initiation zone 31, is for example obtained by means of heat-sealing jaws having a shape adapted for this purpose (for example from the sealing layer constituting the face bottom 20 of the sealing diaphragm 11).
  • the outer end 34 of protruding section 32 is provided on the axis of symmetry 23 'of the tongue 23 and at the level of the widened segment 13' of the flange 13.
  • the sealing diaphragm 11 and the ring 10 are moreover suitably oriented with respect to each other, so that the pull tab 23 comes to be placed at the level of the passage 18.
  • the rupture initiation zone 31 is also provided at the level of the gas passage 18.
  • the passage 18 is thus closed by the sealing diaphragm 11 reported.
  • the lid 1 obtained can easily be stored and transported to a packaging site where it is mounted on the container body 2, after its filling product.
  • the cover 1 can be mounted immediately on the container body 2, before transporting the assembly to the product packaging site (in the filler) for filling with its other open end.
  • the rupture initiation zone 31 allows a reduction of the force and the energy necessary for the degradation of the sealing bead 27, which facilitates the peeling of the sealing diaphragm 11 (because of the flared shape of the projecting section 32 of the rupture initiation zone 31).
  • this traction first generates an attack of the outer projecting section 32 of the rupture initiation zone 31.
  • the passage 18 is rapidly released, which allows the internal pressure of the container 3 to evacuate before the opening of the central lumen 15 of the lid 1 (the border inner 28 of the sealing cord 27 is not yet achieved by the peeling).
  • the internal pressure of the container 3 thus equilibrates with the external environment, without spraying or spraying the packaged product (or at least greatly limiting this spray).
  • the internal lumen 15 is released, as is the opening 6 of the container 3, allowing access to the packaged product.
  • FIG. 5 Another possible embodiment for the ring 10 is illustrated by the figure 5 .
  • This ring 10 is similar to that described above in relation to the Figures 1 to 4 in that it comprises an outer annular portion 12 and a flange 13.
  • the inner edge 14 of the flange 13 thus comprises (i) a curved section 141, in the general shape of a circular arc, and (ii) a rectilinear local section 142, forming its rope.
  • This rectilinear local section 142 can be used in particular scraping surface for scoring a spoon-dose during the sampling of the packaged product, by the user.
  • the disk segment portion 132 is here full, that is to say devoid of any passage 18.
  • the flange 13 is further distinguished in that it is provided with a plurality of gas passages 18 regularly distributed over its circumference, in the space 30 of its sealing bead 27 (within the annular portion 131).
  • Each of these passages 18 consists of a circular orifice 181, similar to that described above in connection with the embodiment of the Figures 1 to 4 .
  • This particular structure allows the presence of a passage 18 under the pull tab 23 (or approximately under the pull tab 23), without the requirement of a specific angular orientation of the ring 10 and its membrane 11, when the manufacture of the lid.
  • passages 18 could be distributed over a collar 13 whose inner and outer edges 14 extend parallel to each other or at least approximately parallel to each other (without the segment of disk 132, for example as defined above in relation to the Figures 1 to 4 ).
  • FIG. 10 Yet another embodiment for the ring 10 is illustrated by the figure 6 .
  • This ring 10 is similar to that described above in connection with the figure 5 in that it comprises an outer annular portion 12 and a flange 13 (having a peripheral annular portion 131 and a disc segment 132).
  • the passage 18 is here similar to that described above in connection with the embodiment illustrated on the Figures 1 to 4 , that is to say consisting of several circular orifices 181 arranged along a straight line.
  • the present embodiment is distinguished by the fact that the passage 18 is formed within an unsealed internal area 271 of the sealing bead 27, located in its space 30 (between its inner edges 28 and outer 29).
  • This zone 271 is in fact devoid of activated sealing material on orifices 181, as well as on their periphery; it presents here a generally oblong or rectangular shape.
  • This particular structure is interesting to prevent clogging of the passage 18 by the material of the sealing bead 27, capable of preventing the expansion of the internal overpressure through the passage 18 at the opening.
  • This particular structure also makes it possible to simultaneously release the orifices 181 as soon as the unsealed internal zone 271 is opened.
  • FIG. 7 Yet another embodiment for the ring 10 is illustrated by the figure 7 .
  • This ring 10 is still similar to that described above in relation to the figure 7 , with the gas passage 18 formed within an unsealed internal zone 271 and in the space 30 of the sealing bead 27.
  • the passage 18 is distinguished here by the fact that it consists of a single orifice 181 in the form of a slot, whose length is for example between 10 and 20 mm and whose width is advantageously between 0.5 and 3 mm.
  • the zone 271 devoid of activated sealing material still has a general oblong or rectangular shape.
  • This slot 181 is here rectilinear, but it could have a curvature parallel to the outer edge 16 of the flange 13.
  • the figure 8 represents an alternative embodiment for the ring 10 according to the Figures 1 to 4 .
  • the ring 10 carrying a sealing bead 27 having a rupture initiation zone 31 provided with a protruding section 32 at its outer edge 29 and a concave section 37 at its inner edge 28.
  • the passage 18 consists of a circular orifice 181 formed on the flange 13 between the inner edge 28 of the sealing bead 27 and the inner edge 14 of said flange 13, in this case within its concave section. 37.
  • this embodiment aims to limit the risk of clogging of the passage 18 by the material of the sealing bead 27.
  • this embodiment requires the complete degradation of the rupture initiation zone 31 to allow the flow of the internal gases of the container 3 (under pressure) through the passage 18 provided for this purpose, before release of the internal light 15. Again, it is necessary to continue the peeling of the sealing diaphragm 11 to open the central lumen 15.
  • the figure 9 also represents an alternative embodiment for the ring 10 according to the Figures 1 to 4 .
  • the ring 10 still carries a sealing bead 27 having a rupture initiation zone 31 provided with a protruding portion 32 at its outer rim 29 and a concave section 37 at the level of its inner border 28.
  • the passage 18 here consists of a notch 182 formed from the inner edge 14 of the flange 13 of the ring 10 and extending towards its outer edge 16.
  • this notch 182 defines a passage for the circulation of gas (extending the central lumen 15), taking into account a continuous virtual line 143 defined by the general shape of the inner edge 14 of the flange 13.
  • the notch 182 here marries the concave section 37 of the rupture initiation zone 31.
  • this passage 18 in the form of notch could be adapted to any other form of sealing bead 27 (possibly lacking a rupture initiation zone 31).
  • this embodiment also requires the complete degradation of the rupture initiation zone 31 to allow the flow of the internal gases of the container 3 (overpressure) through the passage 18 provided for this purpose. Again, it is necessary to continue the peeling of the sealing diaphragm 11 to open the central lumen 15.
  • the lid according to the invention therefore allows a relaxation of the internal pressure of a container during the initiation of the opening, before the release of its central lumen, thus eliminating the risk of projection or d spraying the packaged product.
  • the closure membrane is attached to the container by a technique called "direct heat sealing".
  • the flange 13 is made in one piece with the side wall 4 of the container body 2.
  • the outer edge 16 of this flange 13 is thus connected, by at least one monobloc fold line, to the end edge 5 of this side wall 4.
  • Such a container is for example manufactured by stamping a metal blank, for the formation of a tubular side wall connected to a bottom wall in which is cut a central portion to obtain the central lumen flanked by the one-piece flange.
  • the gas passage or passages are suitably formed in this collar, before or after cutting the central portion.
  • the peelable sealing membrane is then suitably attached to this monoblock flange by heat sealing before filling with the product to be packaged and sealing the opposite opening.
  • the container body is made in one piece, for example (i) by stamping a metal blank, for the formation of a tubular side wall connected to a bottom wall, and then (ii) by rolling and / or stamping the free edge of the tubular side wall to form the one-piece collar.
  • the gas passage or passages are suitably formed in this collar, before or after its formation.
  • the peelable sealing membrane is suitably attached to this one-piece collar by heat sealing, after filling with the product to be packaged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Packages (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)

Abstract

The container has an inner portion in form of an annular collar (13), and a peelable sealing membrane comprising a bottom face, where an outer contour of the bottom face is sealingly attached onto an upper face (17) of the collar by a peripheral sealing cord (27). The membrane has a pull tab (23) so as to peel the membrane relative to the collar by breaking down the cord. The collar has a gas circulation passage (18) closed by the membrane and located opposite to the pull tab so as to release excess internal pressure from the container upon the initiation of peeling of the membrane.

Description

La présente invention concerne le domaine des contenants, en particulier du genre boîtes de conserves, comportant une membrane d'obturation pelable.The present invention relates to the field of containers, in particular of the kind cans, containing a peelable sealing membrane.

Les contenant à « ouverture facile » comprennent généralement une collerette pour constituer une plage de scellage, sur laquelle est solidarisée une membrane d'obturation pelable par le biais d'un cordon (ou bande) de scellage."Easy opening" containers generally comprise a flange to form a sealing pad, on which a peelable sealing membrane is secured by means of a sealing bead (or band).

Cette collerette est parfois réalisée monobloc avec le corps de contenant.This collar is sometimes made in one piece with the container body.

Plus souvent, le contenant est équipé d'un couvercle rapporté qui comprend un anneau support (ou bague) sur lequel est solidarisé la membrane d'obturation pelable, par le biais du cordon de scellage. De tels couvercles sont décrits par exemple dans les documents EP-1 878 666 ou EP-1 595 808 .More often, the container is equipped with an attached lid which comprises a support ring (or ring) on which is secured the peelable sealing membrane, through the sealing bead. Such covers are described for example in the documents EP-1 878 666 or EP-1,595,808 .

Pour cela, l'anneau support comporte une partie interne formant la collerette ; et le contour extérieur de la face de dessous de la membrane pelable est fixé hermétiquement sur la face supérieure de cette collerette par le biais du cordon périphérique de scellage.For this, the support ring has an internal part forming the collar; and the outer contour of the bottom face of the peelable membrane is sealed on the upper face of this flange through the peripheral sealing bead.

La membrane d'obturation est généralement munie d'une languette de traction permettant la transmission de la force appliquée par l'utilisateur (et de l'énergie générée), en vue de l'ouverture du contenant.The closure membrane is generally provided with a pull tab allowing the transmission of the force applied by the user (and the energy generated), for the purpose of opening the container.

Cette action de traction permet donc une dégradation progressive du cordon de scellage (action de pelage), depuis une zone d'amorçage de rupture située au niveau de cette languette de traction.This traction action thus allows a gradual degradation of the sealing bead (peeling action) from a rupture initiation zone located at this pull tab.

Ce type de contenant est parfois employé pour le conditionnement de produit en poudre (dit encore « produit pulvérulent »), par exemple du lait maternisé en poudre, du café moulu ou du café soluble, voire même de tout autre produit déshydraté en poudre.This type of container is sometimes used for the packaging of powdered product (also called "powdery product"), for example powdered infant formula, ground coffee or soluble coffee, or even any other dehydrated powder product.

Dans ce cas, il est fréquent d'introduire une atmosphère protectrice (par exemple de l'azote) dans le contenant avant sa fermeture, pour optimiser la conservation du produit conditionné.In this case, it is common to introduce a protective atmosphere (eg nitrogen) into the container before closing, to optimize the preservation of the packaged product.

Le produit conditionné (notamment le café moulu) est également susceptible d'être à l'origine d'un phénomène de dégazage (par exemple du dioxyde de carbone).The conditioned product (in particular ground coffee) is also likely to cause a degassing phenomenon (for example carbon dioxide).

Le contenant présente ainsi un état de surpression interne.The container thus has a state of internal overpressure.

Avec les couvercles actuels, lors du début du pelage de la membrane d'obturation, la surpression interne se détend très rapidement, et de manière incontrôlée, au travers de la lumière centrale définie par la collerette.With the current covers, at the beginning of the peeling of the sealing diaphragm, the internal overpressure expands very quickly, and uncontrollably, through the central lumen defined by the collar.

Or, en pratique, ce flux gazeux au travers de la lumière centrale provoque souvent une projection externe du produit pulvérulent conditionné.However, in practice, this gas flow through the central lumen often causes external projection of the packaged powdery product.

A l'ouverture, ce phénomène est en plus susceptible de produire notamment (i) un bruit inattendu pour le consommateur et/ou (ii) une force de poussée sur la membrane d'obturation.At the opening, this phenomenon is more likely to produce in particular (i) an unexpected noise for the consumer and / or (ii) a thrust force on the sealing diaphragm.

Pour remédier à cet inconvénient, la demanderesse propose une nouvelle structure de contenant apte à libérer la surpression interne lors de l'initiation du pelage de la membrane pelable, tout en limitant ou en supprimant les problèmes précités (notamment tout phénomène de projection du produit).To remedy this drawback, the Applicant proposes a new container structure capable of releasing the internal overpressure during the initiation of the coat. of the peelable membrane, while limiting or eliminating the aforementioned problems (in particular any phenomenon of product projection).

Dans ce cadre, le contenant selon l'invention est du type comprenant :

  1. (i) une partie interne en forme de collerette, destinée à s'étendre sur le pourtour de l'ouverture à obturer, laquelle collerette est délimitée par une face inférieure, une face supérieure, une bordure intérieure définissant une lumière centrale et une bordure extérieure raccordée à une paroi latérale du contenant, et
  2. (ii) une membrane d'obturation pelable destinée à obturer ladite lumière centrale de l'anneau, comportant une face de dessus et une face de dessous, et dont le contour extérieur de la face de dessous est fixé hermétiquement sur la face supérieure de ladite collerette par le biais d'un cordon de scellage, laquelle membrane d'obturation est munie d'au moins une languette de traction pour autoriser son pelage par rapport à ladite collerette par dégradation dudit cordon de scellage.
Et conformément à l'invention, la collerette est munie d'au moins un passage pour la circulation de gaz. Ce passage est destiné à être obturé par la membrane d'obturation rapportée, et il est situé en regard de la languette de traction pour libérer la surpression interne du contenant lors de l'initiation du pelage de ladite membrane d'obturation.In this context, the container according to the invention is of the type comprising:
  1. (i) an internal flange-shaped portion, intended to extend around the periphery of the opening to be closed, which flange is delimited by a lower face, an upper face, an inner edge defining a central lumen and an outer edge; connected to a side wall of the container, and
  2. (ii) a peelable sealing membrane for sealing said central annulus of the ring, having a top face and a bottom face, and whose outer contour of the bottom face is sealed on the top face of said flange through a sealing bead, which closure membrane is provided with at least one pull tab to allow its peeling relative to said flange by degradation of said sealing bead.
And according to the invention, the flange is provided with at least one passage for the circulation of gas. This passage is intended to be closed by the reported sealing diaphragm, and it is located opposite the pull tab to release the internal pressure of the container during the initiation of peeling said sealing membrane.

Selon un mode de réalisation particulier, le passage en question consiste en au moins un orifice ménagé au travers de la collerette, entre ses bordures intérieure et extérieure.
Dans ce cas, le ou les orifices définissent ensemble avantageusement un passage dont la surface est comprise entre 0,5 et 30 mm2.
Le ou les orifices ont avantageusement une forme générale circulaire dont le diamètre est compris entre 0,5 et 1 mm, et ils sont au nombre de 1 à 10.
De manière alternative, le ou les orifices consistent chacun en une fente allongée, dont la longueur est comprise entre 10 et 20 mm et dont la largeur est comprise entre 0,5 et 3 mm.
According to a particular embodiment, the passage in question consists of at least one orifice formed through the collar, between its inner and outer edges.
In this case, or the orifices together advantageously define a passage whose surface is between 0.5 and 30 mm 2 .
The or orifices advantageously have a generally circular shape whose diameter is between 0.5 and 1 mm, and they are 1 to 10 in number.
Alternatively, the orifices are each an elongated slot, whose length is between 10 and 20 mm and whose width is between 0.5 and 3 mm.

De préférence, le ou les orifices ménagés dans la collerette se situent dans l'encombrement du cordon de scellage.Preferably, or the orifices formed in the collar are in the bulk of the sealing bead.

Ce cordon de scellage comporte alors avantageusement au moins une zone interne non scellée dans laquelle sont ménagés ledit ou lesdits orifices.This sealing bead then advantageously comprises at least one unsealed internal zone in which said orifice or said openings are formed.

De manière alternative, le passage de gaz peut être ménagé entre une bordure intérieure du cordon de scellage et une bordure intérieure de la collerette.Alternatively, the gas passage may be provided between an inner edge of the sealing bead and an inner edge of the flange.

Selon un autre mode de réalisation particulier, le passage consiste en une encoche ménagée depuis ladite bordure intérieure de la collerette et qui s'étend en direction de sa bordure extérieure.According to another particular embodiment, the passage consists of a notch formed from said inner edge of the collar and which extends towards its outer edge.

D'autres caractéristiques avantageuses, pouvant être prises indépendamment ou en combinaison, sont précisées ci-dessous :

  • la collerette comporte plusieurs passages qui sont répartis régulièrement sur sa circonférence ; cette caractéristique vise à permettre une orientation aléatoire de la membrane d'obturation sur la collerette de réception, tout en assurant la présence d'un passage de gaz au niveau de la languette de traction ;
  • les bordures intérieure et extérieure de la collerette s'étendent parallèlement, ou au moins approximativement parallèlement, l'une par rapport à l'autre, lui conférant une largeur constante ou sensiblement constante sur toute sa périphérie ; de manière alternative, le collerette se compose d'une partie annulaire périphérique prolongée par un segment de disque (la bordure intérieure de la collerette se compose ainsi d'un tronçon courbe muni d'un tronçon rectiligne local, ce dernier étant utile notamment pour araser une cuillère-dosette).
Other advantageous characteristics, which can be taken independently or in combination, are specified below:
  • the collar has several passages which are regularly distributed on its circumference; this feature aims to allow a random orientation of the closure membrane on the receiving flange, while ensuring the presence of a gas passage at the pull tab;
  • the inner and outer edges of the flange extend parallel, or at least approximately parallel, with respect to each other, giving it a constant or substantially constant width over its entire periphery; alternatively, the flange consists of a peripheral annular portion extended by a disk segment (the inner edge of the flange is thus composed of a curved section provided with a rectilinear local section, the latter being useful especially for cutting off a spoon-pod).

Sans que cela soit limitatif, au niveau du ou des passages de gaz ménagés sous la languette de traction, le cordon de scellage est avantageusement élargi pour préserver une force de scellage suffisante.Without this being limiting, at the gas passage (s) provided under the pull tab, the sealing bead is advantageously widened to preserve a sufficient sealing force.

Mais en pratique, cette dernière particularité est susceptible d'accroître le niveau de force et d'énergie nécessaire lors de la phase initiale de pelage. Or un niveau de force et d'énergie réduit à l'initiation du pelage constitue l'un des éléments importants pour faciliter la dégradation du cordon de scellage.But in practice, this last feature is likely to increase the level of force and energy required during the initial phase of peeling. However, a level of force and energy reduced to the initiation of peeling is one of the important elements to facilitate the degradation of the sealing bead.

Dans ce cadre, la demanderesse propose également un cordon de scellage dont le niveau de force et d'énergie est réduit à l'amorce du pelage, tout en préservant une force de liaison suffisante de la membrane d'obturation sur la collerette.In this context, the Applicant also proposes a sealing bead whose level of force and energy is reduced to the beginning of peeling, while preserving a sufficient bonding force of the sealing membrane on the flange.

A cet effet, le cordon de scellage comporte une zone d'amorçage de rupture ménagée au niveau de ladite languette de traction ; cette zone d'amorçage de rupture comprend un tronçon saillant de ladite bordure extérieure dudit cordon de scellage qui forme une excroissance locale s'étendant vers ladite bordure extérieure de ladite collerette. Et l'un au moins des passages de gaz mentionnés précédemment est ménagé au niveau de cette zone d'amorçage de rupture.For this purpose, the sealing bead comprises a rupture initiation zone formed at the level of said pull tab; this rupture initiation zone comprises a protruding portion of said outer edge of said sealing bead which forms a local protuberance extending towards said outer edge of said flange. And at least one of the aforementioned gas passages is provided at this rupture initiation zone.

Une telle structure assure une réduction significative de l'effort nécessaire à l'amorçage de la rupture du cordon de scellage par traction sur la languette de la membrane d'obturation ; et elle facilite ainsi l'initiation/l'amorçage du pelage de cette membrane d'obturation.Such a structure provides a significant reduction in the effort required to initiate the rupture of the sealing bead by traction on the tongue of the sealing diaphragm; and it thus facilitates the initiation / initiation of the peeling of this sealing membrane.

D'autres caractéristiques intéressantes, concernant la structure de ce cordon de scellage, sont précisées ci-dessous :

  • le tronçon saillant de ce cordon de scellage et la languette de traction comportent chacun un axe de symétrie, lesquels axes de symétrie s'étendent coaxialement, ou pratiquement coaxialement, l'un par rapport à l'autre ;
  • le tronçon saillant du cordon de scellage présente une forme générale de pointe qui est définie par deux côtés extérieurs divergents depuis une extrémité extérieure ménagée du côté de la bordure extérieure de la collerette ; ces côtés extérieurs divergents sont avantageusement rectilignes ou sensiblement rectilignes, et ils définissent ensemble un angle de préférence compris entre 60° et 160°; selon un mode de réalisation particulier, ces côtés extérieurs divergents du tronçon saillant du cordon de scellage définissent ensemble un angle extérieur compris entre 10° et 90°, et ledit tronçon saillant est encore délimité par deux côtés intérieurs divergents, prolongeant lesdits côtés extérieurs divergents, qui définissent ensemble un angle intérieur plus grand que ledit angle extérieur, compris entre 60° et 160°;
  • la zone d'amorçage de rupture du cordon de scellage comporte encore un tronçon concave ménagé au niveau de la bordure intérieure dudit cordon de scellage, en regard du tronçon saillant de la bordure extérieure, qui forme un dégagement local s'étendant vers la bordure extérieure de la collerette ; le tronçon saillant de la bordure extérieure et le tronçon concave de la bordure intérieure du cordon de scellage sont de préférence complémentaires et ils s'étendent parallèlement, ou au moins approximativement parallèlement, l'un par rapport à l'autre ;
  • la collerette comporte une largeur variable, avec un segment élargi au niveau de la zone d'amorçage de rupture ; dans ce cas, la bordure intérieure de cette collerette est avantageusement décentrée par rapport à sa bordure extérieure, avec un déport à l'opposé de la zone d'amorçage de rupture du cordon de scellage, pour obtenir ledit segment de collerette élargi.
Other interesting characteristics concerning the structure of this sealing bead are specified below:
  • the protruding portion of this sealing bead and the pull tab each comprise an axis of symmetry, which axes of symmetry extend coaxially, or substantially coaxially, with respect to each other;
  • the protruding portion of the sealing bead has a general point shape which is defined by two diverging outer sides from an outer end formed on the side of the outer rim of the flange; these outer sides divergents are advantageously rectilinear or substantially rectilinear, and they together define an angle of preference between 60 ° and 160 °; according to a particular embodiment, these divergent outer sides of the protruding portion of the sealing bead together define an outside angle of between 10 ° and 90 °, and said protruding portion is further delimited by two diverging inner sides, extending said divergent outer sides, which together define an inside angle greater than said outside angle of between 60 ° and 160 °;
  • the rupture initiation zone of the sealing bead further comprises a concave section formed at the inner edge of said sealing bead, facing the protruding portion of the outer edge, which forms a local clearance extending towards the outer edge; the collar; the protruding portion of the outer rim and the concave section of the inner rim of the sealing bead are preferably complementary and extend parallel, or at least approximately parallel, with respect to each other;
  • the collar has a variable width, with an enlarged segment at the level of the rupture initiation zone; in this case, the inner edge of this flange is advantageously off-center with respect to its outer edge, with an offset opposite the rupture initiation zone of the sealing bead, to obtain said enlarged flange segment.

Par ailleurs, le contenant comporte avantageusement un anneau rapporté comportant - une partie externe, apte à être fixée sur une bordure du corps de contenant délimitant ladite ouverture à obturer, et - une partie interne formant la collerette, destinée à s'étendre sur le pourtour de ladite ouverture à obturer.
De manière alternative, la collerette est réalisée monobloc avec la paroi latérale du corps de contenant.
Moreover, the container advantageously comprises an attached ring having - an outer part, adapted to be fixed on a border of the container body delimiting said opening to be closed, and - an inner part forming the collar, intended to extend around the periphery said opening to be closed.
Alternatively, the flange is made in one piece with the side wall of the container body.

La présente invention concerne également l'anneau pour un couvercle d'obturation, éventuellement équipé d'une membrane d'obturation pelable, tel que défini ci-dessus.The present invention also relates to the ring for a closure cap, possibly equipped with a peelable sealing membrane, as defined above.

Cette invention sera encore illustrée, sans aucunement être limitée, par la description suivante en relation avec les dessins annexés dans lesquels :

  • la figure 1 est une vue générale et en perspective d'un contenant équipé d'un couvercle selon l'invention, avec ici sa membrane d'obturation en cours de pelage ;
  • la figure 2 représente, de manière isolée, le couvercle équipant le contenant selon la figure 1 ;
  • la figure 3 est une vue de dessus de l'anneau constitutif du couvercle selon la figure 2 (sans la membrane d'obturation) dont la collerette est munie du passage pour la circulation de gaz et sur lequel est représenté le cordon de scellage ;
  • la figure 4 est une vue partielle et agrandie de l'anneau selon la figure 3, pour montrer en détails son passage pour la circulation de gaz et la zone d'amorçage de rupture de son cordon de scellage ;
  • la figure 5 est une vue de dessus d'un deuxième anneau selon l'invention, muni d'une pluralité de passages pour la circulation de gaz ;
  • la figure 6 est une vue partielle et agrandie d'un troisième anneau selon l'invention, dont le passage pour la circulation de gaz consiste en plusieurs orifices circulaires ménagés dans une zone non-scellée du cordon de scellage ;
  • la figure 7 est une vue partielle et agrandie d'un quatrième anneau selon l'invention, dont le passage pour la circulation de gaz consiste ici en une fente ménagée dans une zone non-scellée du cordon de scellage ;
  • la figure 8 est une vue partielle et agrandie d'un cinquième anneau selon l'invention, avec le passage pour la circulation de gaz consistant en un orifice ménagé en dehors de l'encombrement du cordon de scellage ;
  • la figure 9 est une vue partielle et agrandie d'un sixième anneau selon l'invention, muni d'un passage pour la circulation de gaz en forme d'une encoche ménagée dans la bordure intérieure de sa collerette.
This invention will be further illustrated, without being limited, by the following description in relation to the accompanying drawings in which:
  • the figure 1 is a general perspective view of a container equipped with a lid according to the invention, here with its closure membrane during peeling;
  • the figure 2 represents, in an isolated manner, the lid equipping the container according to the figure 1 ;
  • the figure 3 is a top view of the constituent ring of the lid according to the figure 2 (Without the sealing membrane) whose collar is provided with the passage for the circulation of gas and on which is represented the sealing cord;
  • the figure 4 is a partial and enlarged view of the ring according to the figure 3 , to show in detail its passage for the circulation of gas and the zone of initiation of rupture of its cordon of sealing;
  • the figure 5 is a top view of a second ring according to the invention, provided with a plurality of passages for the circulation of gas;
  • the figure 6 is a partial and enlarged view of a third ring according to the invention, the passage for the flow of gas consists of several circular orifices formed in an unsealed area of the sealing bead;
  • the figure 7 is a partial and enlarged view of a fourth ring according to the invention, the passage for the flow of gas here consists of a slot in an unsealed area of the sealing bead;
  • the figure 8 is a partial and enlarged view of a fifth ring according to the invention, with the passage for the flow of gas consisting of an orifice formed outside the bulk of the sealing bead;
  • the figure 9 is a partial and enlarged view of a sixth ring according to the invention, provided with a passage for the circulation of gas in the form of a notch formed in the inner edge of its flange.

Le couvercle 1 selon l'invention (figures 1 à 3) est adapté pour être monté sur un corps de contenant 2 lors de la fabrication d'un contenant 3 (figure 1).The lid 1 according to the invention ( Figures 1 to 3 ) is adapted to be mounted on a container body 2 during the manufacture of a container 3 ( figure 1 ).

Ce type de contenant 3 est utile pour le conditionnement de denrées alimentaires en poudre (dites encore « pulvérulentes »).This type of container 3 is useful for packaging powdered foodstuffs (also called "powdery").

Le corps de contenant 2 comporte une paroi latérale 4 qui est ici de section circulaire (mais qui pourrait être de toute autre configuration, dimension et section).The container body 2 has a side wall 4 which is here of circular section (but which could be of any other configuration, size and section).

Le matériau constitutif de ce corps de contenant 2, et son procédé de fabrication, peuvent être choisis par l'homme du métier.The constituent material of this container body 2, and its method of manufacture, may be chosen by those skilled in the art.

Par exemple, le corps de contenant 2 est réalisé en métal, notamment en acier ou en aluminium, choisi notamment en fonction du produit à conditionner.For example, the container body 2 is made of metal, in particular steel or aluminum, chosen in particular depending on the product to be packaged.

Ce corps de contenant 2 comporte encore une paroi de fond (non visible), réalisée monobloc avec la paroi latérale 4 ou rapportée sur cette dernière (par exemple par sertissage).This container body 2 further comprises a bottom wall (not visible), made in one piece with the lateral wall 4 or attached thereto (for example by crimping).

Le couvercle 1, représenté sur les figures 1 à 3, est ici adapté pour être rapporté sur ce corps de contenant 2 à section circulaire.
Ce couvercle 1 pourrait également être adapté pour être monté sur un corps 2 ayant une autre forme/section par exemple ovale, carrée, rectangulaire, oblongue, etc. ; sa forme générale serait alors adaptée en conséquence.
The lid 1, shown on the Figures 1 to 3 , is here adapted to be attached to this container body 2 of circular section.
This cover 1 could also be adapted to be mounted on a body 2 having another shape / section for example oval, square, rectangular, oblong, etc. ; its general form would then be adapted accordingly.

Tel que représenté sur la figure 1, le couvercle 1 est solidarisé hermétiquement au niveau d'une bordure d'extrémité 5 de la paroi latérale 4 qui délimite une ouverture supérieure 6 du corps de contenant 2.
Cette solidarisation peut réalisée par toute technique appropriée, par exemple par sertissage.
As shown on the figure 1 , the cover 1 is secured hermetically at an end edge 5 of the side wall 4 which defines an upper opening 6 of the container body 2.
This joining can be carried out by any appropriate technique, for example by crimping.

Tel que représenté sur la figure 2, le couvercle 1 selon l'invention comprend (i) un anneau (ou bague) de montage 10 et (ii) une membrane d'obturation pelable 11, fixée hermétiquement sur ledit anneau 10.As shown on the figure 2 , the lid 1 according to the invention comprises (i) a ring (or ring) for mounting 10 and (ii) a peelable sealing membrane 11, hermetically fixed on said ring 10.

Cet anneau de montage 10 consiste avantageusement en une pièce métallique, par exemple réalisée en acier ou en aluminium.This mounting ring 10 advantageously consists of a metal part, for example made of steel or aluminum.

La forme et les dimensions de cet anneau 10 sont adaptées en fonction de la section du corps de contenant 2 (et en particulier de sa bordure d'extrémité supérieure 5) sur lequel il va être monté.
En l'occurrence, cet anneau 10 a une forme générale annulaire ou circulaire.
The shape and dimensions of this ring 10 are adapted according to the section of the container body 2 (and in particular of its upper end edge 5) on which it will be mounted.
In this case, this ring 10 has a generally annular or circular shape.

Tel que représenté en particulier sur la figure 3 (la membrane d'obturation 11 étant ici entièrement pelée), l'anneau 10 comprend :

  • une partie annulaire externe 12, adaptée pour être solidarisée mécaniquement (par sertissage par exemple) avec la bordure d'extrémité 5 du corps de contenant 2, et
  • une partie interne 13, destinée à former une plage de scellage pour la membrane d'obturation 11 rapportée.
As shown in particular on the figure 3 (the sealing membrane 11 being here completely peeled), the ring 10 comprises:
  • an outer annular portion 12, adapted to be secured mechanically (for example by crimping) with the end edge 5 of the container body 2, and
  • an inner portion 13, for forming a sealing range for the sealing diaphragm 11 reported.

La partie interne 13 forme une collerette rapportée, ici annulaire, qui est délimitée par :

  • une bordure intérieure 14, ici annulaire et définissant une lumière centrale 15,
  • une bordure extérieure 16, raccordée à la partie externe 12 de l'anneau 10,
  • une face inférieure (non visible), destinée à être orientée vers le corps de contenant 2, et
  • une face supérieure 17, destinée à être orientée à l'opposé du corps de contenant 2.
The inner part 13 forms a reported collar, here annular, which is delimited by:
  • an inner edge 14, here annular and defining a central lumen 15,
  • an outer rim 16, connected to the outer part 12 of the ring 10,
  • a lower face (not visible), intended to be oriented towards the container body 2, and
  • an upper face 17, intended to be oriented opposite the container body 2.

Les bordures intérieure 14 et extérieure 16 de la collerette 13 s'étendent ici approximativement parallèlement l'une par rapport à l'autre, lui conférant une largeur presque constante sur toute sa circonférence.
En particulier, la bordure extérieure 16 est circulaire et centrée sur un axe traversant A ; et de son côté, la bordure intérieure 14 est circulaire et légèrement décentrée par rapport à cette bordure extérieure 16, avec un déport de son axe traversant B par rapport à l'axe traversant A précité.
The inner 14 and outer edges 16 of the flange 13 extend here approximately parallel to each other, giving it an almost constant width over its entire circumference.
In particular, the outer edge 16 is circular and centered on a through axis A ; and on its side, the inner edge 14 is circular and slightly off-center with respect to this outer edge 16, with an offset of its axis through B relative to the aforementioned through axis A.

La collerette annulaire 13 s'étend ici dans un plan, perpendiculairement à l'axe dessus/dessous du couvercle 1.
Selon une variante de réalisation non représentée, cette collerette annulaire 13 pourrait également présenter une forme générale tronconique, avec sa bordure intérieure 14 déportée vers l'extérieur (du côté de sa face supérieure 17) par rapport à la bordure extérieure 16.
The annular flange 13 extends here in a plane, perpendicular to the axis above / below the lid 1.
According to an alternative embodiment not shown, this annular collar 13 could also have a generally frustoconical shape, with its inner edge 14 offset to the outside (on the side of its upper face 17) relative to the outer edge 16.

Pour obtenir la détente de la surpression interne à l'initiation du pelage, la collerette 13 de l'anneau 10 est munie d'un passage 18 pour la circulation de gaz.To obtain the relaxation of the internal pressure at the initiation of peeling, the flange 13 of the ring 10 is provided with a passage 18 for the circulation of gas.

Dans ce mode de réalisation, le passage 18 consiste en plusieurs orifices 181 ménagés au travers de la collerette 13 de l'anneau 10, entre ses bordures intérieure 14 et extérieure 16.In this embodiment, the passage 18 consists of several orifices 181 formed through the collar 13 of the ring 10, between its inner and outer edges 14 and 16.

Les orifices 181, ici au nombre de quatre (mais avantageusement selon un nombre compris entre 1 et 10), sont traversants. Ils débouchent chacun au travers des faces supérieure 17 et inférieure de la collerette 13, pour définir des conduits entre le volume interne du contenant 3 et l'environnement extérieur.The orifices 181, here four in number (but advantageously in a number between 1 and 10), are through. They open each through the upper 17 and lower faces of the collar 13, to define conduits between the internal volume of the container 3 and the external environment.

Ces orifices 181 sont ménagés à proximité les uns des autres, selon une ligne virtuelle rectiligne (mais ils pourraient tout aussi bien être ménagés par exemple sur une ligne virtuelle courbe, ou selon une disposition du type quinconce).These orifices 181 are formed close to each other, along a rectilinear virtual line (but they could equally well be formed for example on a curved virtual line, or in a staggered arrangement).

Les orifices 181 ont ici chacun une forme générale circulaire dont le diamètre est compris entre 0,5 mm et 1 mm (cette forme peut être ovale, ovoïde ou allongée).The orifices 181 here each have a generally circular shape whose diameter is between 0.5 mm and 1 mm (this shape may be oval, ovoid or elongate).

Ces orifices 181 définissent ainsi ensemble un passage 18 dont la surface est avantageusement comprise entre 0,5 et 30 mm2.These orifices 181 thus together define a passage 18 whose surface is advantageously between 0.5 and 30 mm 2 .

La membrane d'obturation 11, représentée sur les figures 1 et 2, est par exemple du type de celle décrite dans le document EP-1 878 666 .The sealing diaphragm 11, shown on the Figures 1 and 2 is, for example, of the type described in the document EP-1 878 666 .

Cette membrane d'obturation 11 se compose avantageusement de plusieurs couches superposées, à savoir au moins :

  • une couche de base réalisée dans un matériau flexible et résistant, formant barrière, par exemple en aluminium, et
  • une couche de scellage, par exemple à base de polypropylène ou du genre vernis scellant.
This closure membrane 11 advantageously consists of several superimposed layers, namely at least:
  • a base layer made of a flexible and resistant barrier material, for example aluminum, and
  • a sealing layer, for example based on polypropylene or the kind of varnish sealant.

Cette membrane d'obturation 11 peut comporter encore toute autre couche de matière, adaptée en fonction des fonctionnalités recherchées (par exemple une couche adhésive ou une couche de pelage dite « peeling layer »).This closure membrane 11 may further comprise any other layer of material, adapted according to the desired functionalities (for example an adhesive layer or a layer of peeling layer called "peeling layer").

Cette membrane d'obturation 11, encore dénommée « opercule », est délimitée par (figure 2) :

  • une face de dessous 20, destinée à être orientée vers le corps de contenant 2,
  • une face de dessus 21, destinée à être orientée à l'opposé du corps de contenant 2, et
  • une bordure extérieure périphérique 22 (ici de forme générale circulaire).
This closure membrane 11, also called "operculum", is delimited by figure 2 ):
  • a bottom face 20, intended to be oriented towards the container body 2,
  • a top face 21, intended to be oriented opposite the container body 2, and
  • a peripheral outer edge 22 (here of generally circular shape).

Dans le prolongement de sa bordure périphérique 22, la membrane d'obturation 11 comporte encore une languette de traction 23 (ou un anneau de préhension) pour assurer son pelage manuel par rapport à l'anneau 10.In the extension of its peripheral edge 22, the sealing diaphragm 11 further comprises a pull tab 23 (or a gripping ring) to ensure its manual peeling relative to the ring 10.

Cette languette de traction 23 est avantageusement réalisée monobloc avec la membrane 11, et elle consiste en une extension de matière.
De manière alternative, la languette de traction 23 est rapportée sur la membrane d'obturation 11, directement ou indirectement (la membrane 11 est alors obtenue par l'assemblage d'au moins deux pièces).
This pull tab 23 is advantageously made in one piece with the membrane 11, and it consists of an extension of material.
Alternatively, the pull tab 23 is attached to the sealing diaphragm 11, directly or indirectly (the membrane 11 is then obtained by assembling at least two parts).

Avant l'opération de pelage et de manière classique, la languette de traction 23 est avantageusement pliée en regard et contre la face supérieure 21 de la membrane d'obturation 11 (tel que représenté très schématiquement sur la figure 3).
Selon d'autres formes de réalisation, cette membrane d'obturation 11 peut être munie de plusieurs languettes de traction 23 (au moins deux), convenablement réparties.
Before the peeling operation and in a conventional manner, the pull tab 23 is advantageously folded facing and against the upper face 21 of the sealing diaphragm 11 (as represented very schematically on the figure 3 ).
According to other embodiments, this closure membrane 11 may be provided with several pull tabs 23 (at least two), suitably distributed.

L'axe longitudinal de symétrie 23' de cette languette de traction 23 (passant entre ses extrémités intérieure et extérieure) s'étend alors radialement, ou au moins approximativement radialement (figure 3).The longitudinal axis of symmetry 23 'of this pull tab 23 (passing between its inner and outer ends) then extends radially, or at least approximately radially ( figure 3 ).

La membrane d'obturation 11 est fixée hermétiquement sur l'anneau 10, avantageusement par une liaison de type collage et/ ou soudage (par exemple une technique de thermo-soudage), de sorte à obturer sa lumière centrale 15.The sealing membrane 11 is hermetically fixed on the ring 10, advantageously by a connection of the bonding and / or welding type (for example a thermo-welding technique), so as to close off its central lumen 15.

Pour cela, le contour extérieur de la face de dessous 20 de cette membrane d'obturation 11 est ici solidarisé hermétiquement sur la face supérieure 17 de la collerette annulaire 13 de l'anneau 10 par le biais d'un cordon périphérique de scellage 27.For this purpose, the outer contour of the bottom face 20 of this sealing diaphragm 11 is here secured hermetically to the upper face 17 of the annular flange 13 of the ring 10 by means of a peripheral sealing bead 27.

Tel qu'illustré sur la figure 3, ce cordon de scellage 27, ici en forme générale de couronne, est délimité par deux bordures 28, 29 définissant entre elles son encombrement 30, à savoir :

  • une bordure intérieure 28, s'étendant le long et du côté de la bordure intérieure 14 de la collerette 13, et
  • une bordure extérieure 29, s'étendant le long et du côté de la bordure extérieure 16 de la collerette 13.
As illustrated on the figure 3 , this sealing bead 27, here in the general shape of a crown, is delimited by two edges 28, 29 defining between them its bulk 30, namely:
  • an inner border 28, extending along and on the side of the inner edge 14 of the flange 13, and
  • an outer edge 29, extending along and on the side of the outer edge 16 of the flange 13.

Ce cordon de scellage 27 constitue ainsi une bande continue hermétique, s'étendant sur toute la circonférence de la collerette 13 associée.This sealing bead 27 thus constitutes a hermetic continuous band, extending over the entire circumference of the associated flange 13.

Les bordures intérieure 28 et extérieure 29 ont ici chacune une forme générale circulaire, ovale ou ovoïde, s'étendant parallèlement ou au moins approximativement parallèlement l'une par rapport à l'autre.The inner 28 and outer 29 edges here each have a generally circular shape, oval or ovoid, extending parallel or at least approximately parallel to one another.

Au niveau de la languette de traction 23, le cordon de scellage 27 comporte une zone d'amorçage de rupture 31 qui est agencée pour réduire l'effort nécessaire à l'amorçage de sa rupture par une traction sur la languette 23 prévue à cet effet, et qui permet ainsi de faciliter l'initiation du pelage de la membrane d'obturation 11 par rapport à l'anneau 10.At the level of the pull tab 23, the sealing bead 27 has a rupture initiation zone 31 which is arranged to reduce the force required to initiate its breaking by pulling on the tongue 23 provided for this purpose. , and which thus makes it easier to initiate the peeling of the sealing diaphragm 11 with respect to the ring 10.

Tel que représenté sur la figure 4, la zone d'amorçage de rupture 31 du cordon de scellage 27 comprend à cet effet un tronçon saillant extérieur 32 ménagé au niveau de la bordure extérieure 29.As shown on the figure 4 , the rupture initiation area 31 of the sealing bead 27 comprises for this purpose an outer projecting section 32 formed at the outer edge 29.

Ce tronçon saillant 32 forme une excroissance locale par rapport à la bordure extérieure 29 du cordon de scellage 27, qui s'étend vers la bordure extérieure 16 de la collerette 13.This protruding section 32 forms a local protuberance with respect to the outer edge 29 of the sealing bead 27, which extends towards the outer edge 16 of the collar 13.

En l'occurrence, le tronçon saillant 32 forme alors une partie locale saillante vers la périphérie, par rapport à une ligne virtuelle continue 33 définie par la forme générale de la bordure extérieure 29 (figure 4).In this case, the projecting section 32 then forms a local part protruding towards the periphery, with respect to a continuous virtual line 33 defined by the general shape of the outer edge 29 ( figure 4 ).

Plus précisément, ce tronçon saillant 32 de la zone d'amorçage de rupture 31 présente une forme qui s'évase dans un sens s'étendant depuis la bordure extérieure 16 vers la bordure intérieure 14 de la collerette 13.More specifically, this protruding section 32 of the rupture initiation zone 31 has a shape that widens in a direction extending from the outer edge 16 towards the inner edge 14 of the flange 13.

Ce tronçon saillant 32 présente ici une forme générale de pointe, avec une extrémité extérieure 34 ménagée au niveau de la bordure extérieure 16 de la collerette 13 et aussi au niveau de la bordure périphérique 22 de la membrane d'obturation 11 que la recouvre.This projecting section 32 here has a general shape of tip, with an outer end 34 formed at the outer edge 16 of the collar 13 and also at the peripheral edge 22 of the sealing membrane 11 that covers it.

Ce tronçon saillant 32 en pointe est défini ici par deux côtés extérieurs 35 rectilignes, ou au moins approximativement rectilignes, qui divergent depuis l'extrémité extérieure 34.This pointed protruding section 32 is here defined by two rectilinear, or at least approximately rectilinear, outer sides 35 which diverge from the outer end 34.

Ces deux côtés extérieurs divergents 35 définissent ensemble un angle 36, avantageusement compris entre 60° et 160°.These two divergent outer sides 35 together define an angle 36, advantageously between 60 ° and 160 °.

Pour un effet optimal, le tronçon saillant 32 de la zone d'amorçage de rupture 31 comporte un axe de symétrie 32' qui s'étend coaxialement (ou au moins approximativement coaxialement) par rapport à l'axe longitudinal 23' de la languette de traction 23 sus-jacente (figures 3 et 4).For an optimal effect, the protruding section 32 of the rupture initiation zone 31 comprises an axis of symmetry 32 'which extends coaxially (or at least approximately coaxially) with respect to the longitudinal axis 23' of the tongue of FIG. overlying traction 23 ( Figures 3 and 4 ).

Pour former encore la zone d'amorçage de rupture 31, la bordure intérieure 28 du cordon de scellage 27 comporte quant à elle, en regard du tronçon saillant extérieur 32 précité, un tronçon concave 37 s'étendant vers la bordure extérieure 16 de la collerette 13 pour former un dégagement local.To further form the rupture initiation zone 31, the inner edge 28 of the sealing bead 27 comprises, opposite the outer projecting section 32 mentioned above, a concave section 37 extending towards the outer edge 16 of the collar 13 to form a local clearance.

En l'occurrence, le tronçon saillant 32 de la bordure extérieure 29 et le tronçon concave 37 de la bordure intérieure 28 du cordon de scellage 27, forment ici ensemble une zone d'amorçage de rupture 31 en forme générale d'un chevron (ou V renversé).In this case, the protruding portion 32 of the outer rim 29 and the concave section 37 of the inner rim 28 of the sealing bead 27, here together form a rupture initiation zone 31 in the general shape of a chevron (or V reversed).

Ces deux tronçons 32 et 37 sont complémentaires ; ils s'étendent parallèlement, ou au moins approximativement parallèlement, l'un par rapport à l'autre.These two sections 32 and 37 are complementary; they extend parallel, or at least approximately parallel, with respect to each other.

Cette structure particulière vise à éviter un élargissement local du cordon de scellage 27 au niveau de cette zone d'amorçage de rupture 31, avec une augmentation inhérente de la force nécessaire à l'ouverture.This particular structure aims to avoid local enlargement of the sealing bead 27 at this rupture initiation zone 31, with an inherent increase in the force required for opening.

Dans ce cadre, le passage 18 de la collerette 13 est ménagé dans l'encombrement 30 du cordon de scellage 27 (entre les bordures intérieure 28 et extérieure 29 de ce dernier), en regard de la languette de traction 23.In this context, the passage 18 of the flange 13 is formed in the space 30 of the sealing bead 27 (between the inner and outer edges 29 of the latter), opposite the pull tab 23.

Plus précisément, ce passage 18 est ici ménagé dans l'encombrement de la zone d'amorçage de rupture 31, entre ses portions extérieure 32 et intérieure 37.
En présence du passage 18, cette zone d'amorçage de rupture 31 est ici utile pour remédier à un éventuel élargissement du cordon de scellage 27 à ce niveau (cet élargissement du cordon de scellage peut être utile pour compenser une éventuelle faiblesse de la force de fixation).
More precisely, this passage 18 is here provided in the bulk of the rupture initiation zone 31, between its outer and inner portions 32 and 37.
In the presence of the passage 18, this rupture initiation zone 31 is here useful to remedy any enlargement of the sealing bead 27 at this level (this widening of the sealing bead may be useful to compensate for a possible weakness of the fastening force).

Les orifices 181 de ce passage 18 sont en plus ménagés de manière symétrique, ou au moins approximativement symétrique, par rapport à l'axe 32' de la zone d'amorçage de rupture 31 et à l'axe longitudinal 23' de la languette de traction 23 (figures 3 et 4).The orifices 181 of this passage 18 are additionally arranged symmetrically or at least approximately symmetrically with respect to the axis 32 'of the rupture initiation zone 31 and to the longitudinal axis 23' of the tongue of FIG. traction 23 ( Figures 3 and 4 ).

De manière générale, une telle zone d'amorçage de rupture 31 du cordon de scellage 27 pourrait être prévue sur un contenant 3 dont la collerette 13 (monobloc ou rapportée) serait dépourvue de tout passage 18 précité.In general, such a rupture initiation zone 31 of the sealing bead 27 could be provided on a container 3 whose collar 13 (monobloc or insert) would be devoid of any passage 18 above.

D'autre part, la collerette 13 comporte avantageusement une largeur variable, avec un segment élargi 13' (figure 3) au niveau du passage 18 et le cas échéant de la zone d'amorçage de rupture 31, de manière à faciliter leur aménagement.On the other hand, the flange 13 advantageously comprises a variable width, with an enlarged segment 13 '( figure 3 ) at the passage 18 and, where appropriate, the rupture initiation zone 31, so as to facilitate their development.

Pour cela, tel qu'abordé précédemment, l'axe traversant B de la bordure intérieure 14 de la collerette 13 est ici décentré par rapport à l'axe traversant A de sa bordure extérieure 16, avec un déport de son axe traversant B à l'opposé de ce passage 18 et de cette zone d'amorçage de rupture 31 (figure 3).
Ces axes traversants A et B s'étendent avantageusement, au moins approximativement, sur l'axe longitudinal de symétrie 32' du tronçon saillant 32 et l'axe de symétrie 23' de la languette de traction 23.
For this, as discussed above, the traversing axis B of the inner edge 14 of the flange 13 is here off-center with respect to the axis A through its outer edge 16, with an offset of its axis through B to opposite of this passage 18 and of this rupture initiation zone 31 ( figure 3 ).
These traversing axes A and B advantageously extend, at least approximately, on the longitudinal axis of symmetry 32 'of the projecting section 32 and the axis of symmetry 23' of the pull tab 23.

Le segment 13" de collerette 13, situé à l'opposée du segment élargi 13', constitue ainsi la plus petite largeur radiale de cette collerette 13.The segment 13 "of flange 13, located opposite the enlarged segment 13 ', thus constitutes the smallest radial width of this flange 13.

En pratique, le couvercle 1 selon l'invention est produit sur un premier site de fabrication.In practice, the cover 1 according to the invention is produced on a first manufacturing site.

Pour cela, l'anneau 10 et la membrane pelable 11 sont fabriqués indépendamment l'un de l'autre par des techniques connues de l'homme du métier.
En particulier, le ou les passages 18 peuvent être ménagés dans la collerette 13 de l'anneau 10 par toute technique d'usinage adaptée (par exemple par perçage, par emboutissage ou par pointage).
For this, the ring 10 and the peelable membrane 11 are manufactured independently of one another by techniques known to those skilled in the art.
In particular, the passage or passages 18 may be formed in the flange 13 of the ring 10 by any suitable machining technique (for example by drilling, stamping or pointing).

Ces deux pièces 10 et 11 peuvent ensuite être assemblées par exemple par une technique de thermoscellage, pour former le cordon de scellage 27 décrit ci-dessus.
La forme particulière du cordon de scellage 27, avec sa zone d'amorçage de rupture 31, est par exemple obtenue au moyen de mors de thermoscellage ayant une forme adaptée à cet effet (par exemple à partir de la couche de scellage constitutive de la face de dessous 20 de la membrane d'obturation 11).
L'extrémité extérieure 34 de tronçon saillant 32 est prévue sur l'axe de symétrie 23' de la languette 23 et au niveau du segment élargi 13' de la collerette 13.
These two parts 10 and 11 can then be assembled for example by a heat-sealing technique, to form the sealing bead 27 described above.
The particular shape of the sealing bead 27, with its rupture initiation zone 31, is for example obtained by means of heat-sealing jaws having a shape adapted for this purpose (for example from the sealing layer constituting the face bottom 20 of the sealing diaphragm 11).
The outer end 34 of protruding section 32 is provided on the axis of symmetry 23 'of the tongue 23 and at the level of the widened segment 13' of the flange 13.

Lors de cet assemblage, la membrane d'obturation 11 et l'anneau 10 sont de plus convenablement orientés l'un par rapport à l'autre, de sorte que la languette de traction 23 vienne se placer au niveau du passage 18.During this assembly, the sealing diaphragm 11 and the ring 10 are moreover suitably oriented with respect to each other, so that the pull tab 23 comes to be placed at the level of the passage 18.

Tel qu'évoqué ci-dessus, la zone d'amorçage de rupture 31 est également ménagée au niveau du passage de gaz 18.
Le passage 18 est ainsi obturé par la membrane d'obturation 11 rapportée.
As mentioned above, the rupture initiation zone 31 is also provided at the level of the gas passage 18.
The passage 18 is thus closed by the sealing diaphragm 11 reported.

Le couvercle 1 obtenu peut aisément être stocké et transporté jusqu'à un site de conditionnement où il est monté sur le corps de contenant 2, après son remplissage en produit.
De manière alternative, le couvercle 1 peut être monté immédiatement sur le corps de contenant 2, avant le transport de l'ensemble sur le site de conditionnement du produit (chez le remplisseur) pour son remplissage par son autre extrémité ouverte.
The lid 1 obtained can easily be stored and transported to a packaging site where it is mounted on the container body 2, after its filling product.
Alternatively, the cover 1 can be mounted immediately on the container body 2, before transporting the assembly to the product packaging site (in the filler) for filling with its other open end.

Une fois le contenant 3 fermé et rempli, son ouverture est mise en oeuvre d'une manière classique ; pour cela, il suffit à l'utilisateur d'exercer une traction appropriée sur la languette 23, selon une direction coaxiale à son axe longitudinal 23'.Once the container 3 closed and filled, its opening is implemented in a conventional manner; for this, it is sufficient for the user to exert an appropriate traction on the tongue 23, in a direction coaxial with its longitudinal axis 23 '.

Au début de cette traction, la zone d'amorçage de rupture 31 permet une réduction de la force et de l'énergie nécessaire à la dégradation du cordon de scellage 27, ce qui facilite le pelage de la membrane d'obturation 11 (du fait de la forme évasée du tronçon saillant 32 de la zone d'amorçage de rupture 31).At the beginning of this traction, the rupture initiation zone 31 allows a reduction of the force and the energy necessary for the degradation of the sealing bead 27, which facilitates the peeling of the sealing diaphragm 11 (because of the flared shape of the projecting section 32 of the rupture initiation zone 31).

Pour cela, cette traction génère d'abord une attaque du tronçon saillant extérieur 32 de la zone d'amorçage de rupture 31.
Lors de cette initiation du pelage de la membrane d'obturation 11, le passage 18 est rapidement libéré, ce qui permet à la surpression interne du contenant 3 de s'évacuer avant l'ouverture de la lumière centrale 15 du couvercle 1 (la bordure intérieure 28 du cordon de scellage 27 n'étant pour le moment pas encore atteinte par le pelage). La pression interne du contenant 3 s'équilibre ainsi avec l'environnement extérieur, sans pulvérisation ou projection du produit conditionné (ou tout au moins en limitant grandement cette pulvérisation).
For this, this traction first generates an attack of the outer projecting section 32 of the rupture initiation zone 31.
During this initiation of the peeling of the sealing membrane 11, the passage 18 is rapidly released, which allows the internal pressure of the container 3 to evacuate before the opening of the central lumen 15 of the lid 1 (the border inner 28 of the sealing cord 27 is not yet achieved by the peeling). The internal pressure of the container 3 thus equilibrates with the external environment, without spraying or spraying the packaged product (or at least greatly limiting this spray).

La poursuite de la traction sur la languette 23 entraîne la détérioration du tronçon intérieur 37 de la zone d'amorçage de rupture 31, ainsi que la longueur restante du cordon de scellage 27.Continued traction on the tongue 23 causes deterioration of the inner portion 37 of the fracture initiation zone 31, as well as the remaining length of the sealing bead 27.

La lumière interne 15 est libérée, tout comme l'ouverture 6 du contenant 3, autorisant un accès au produit conditionné.The internal lumen 15 is released, as is the opening 6 of the container 3, allowing access to the packaged product.

Un autre mode de réalisation possible pour l'anneau 10 est illustré par la figure 5.Another possible embodiment for the ring 10 is illustrated by the figure 5 .

Cet anneau 10 est similaire à celui décrit ci-dessus en relation avec les figures 1 à 4, en ce sens qu'il comprend une partie annulaire externe 12 et une collerette 13.This ring 10 is similar to that described above in relation to the Figures 1 to 4 in that it comprises an outer annular portion 12 and a flange 13.

Mais la collerette 13 se compose ici :

  1. (i) d'une partie périphérique annulaire 131, sur laquelle est représenté le cordon de scellage 27 pour l'assemblage de la membrane d'obturation 11, et
  2. (ii) d'un segment de disque 132 monobloc et prolongeant la partie annulaire 131, du côté de la lumière 15.
But the collar 13 is composed here:
  1. (i) an annular peripheral portion 131, on which is represented the sealing bead 27 for the assembly of the sealing diaphragm 11, and
  2. (ii) a disc segment 132 in one piece and extending the annular portion 131, on the side of the light 15.

La bordure intérieure 14 de la collerette 13 comporte ainsi (i) un tronçon courbe 141, en forme générale d'arc de cercle, et (ii) un tronçon rectiligne local 142, formant sa corde.The inner edge 14 of the flange 13 thus comprises (i) a curved section 141, in the general shape of a circular arc, and (ii) a rectilinear local section 142, forming its rope.

Ce tronçon rectiligne local 142 peut servir en particulier de surface de raclage pour araser une cuillère-dose lors du prélèvement du produit conditionné, par l'utilisateur.This rectilinear local section 142 can be used in particular scraping surface for scoring a spoon-dose during the sampling of the packaged product, by the user.

La partie en segment de disque 132 est ici pleine, c'est-à-dire dépourvue de tout passage 18.The disk segment portion 132 is here full, that is to say devoid of any passage 18.

La collerette 13 se distingue encore en ce qu'elle est munie d'une pluralité de passages de gaz 18 régulièrement répartis sur sa circonférence, dans l'encombrement 30 de son cordon de scellage 27 (au sein de la partie annulaire 131).The flange 13 is further distinguished in that it is provided with a plurality of gas passages 18 regularly distributed over its circumference, in the space 30 of its sealing bead 27 (within the annular portion 131).

Chacun de ces passages 18 consiste en un orifice circulaire 181, similaire à celui décrit ci-dessus en relation avec le mode de réalisation des figures 1 à 4.Each of these passages 18 consists of a circular orifice 181, similar to that described above in connection with the embodiment of the Figures 1 to 4 .

Cette structure particulière permet la présence d'un passage 18 sous la languette de traction 23 (ou approximativement sous la languette de traction 23), sans l'obligation d'une orientation angulaire déterminée de l'anneau 10 et de sa membrane 11, lors de la fabrication du couvercle.This particular structure allows the presence of a passage 18 under the pull tab 23 (or approximately under the pull tab 23), without the requirement of a specific angular orientation of the ring 10 and its membrane 11, when the manufacture of the lid.

De manière générale, de tels passages 18 pourraient être répartis sur une collerette 13 dont les bordures intérieure 14 et extérieure 16 s'étendent parallèlement l'une à l'autre ou au moins approximativement parallèlement l'une à l'autre (sans le segment de disque 132, par exemple tel que défini ci-dessus en relation avec les figures 1 à 4).In general, such passages 18 could be distributed over a collar 13 whose inner and outer edges 14 extend parallel to each other or at least approximately parallel to each other (without the segment of disk 132, for example as defined above in relation to the Figures 1 to 4 ).

Encore un autre mode de réalisation pour l'anneau 10 est illustré par la figure 6.Yet another embodiment for the ring 10 is illustrated by the figure 6 .

Cet anneau 10 est similaire à celui décrit ci-dessus en relation avec la figure 5, par le fait qu'il comprend une partie annulaire externe 12 et une collerette 13 (comportant une partie annulaire périphérique 131 et un segment de disque 132).This ring 10 is similar to that described above in connection with the figure 5 in that it comprises an outer annular portion 12 and a flange 13 (having a peripheral annular portion 131 and a disc segment 132).

Le passage 18 est ici similaire à celui décrit ci-dessus en relation avec le mode de réalisation illustré sur les figures 1 à 4, c'est-à-dire constitué de plusieurs orifices circulaires 181 agencés selon une ligne rectiligne.The passage 18 is here similar to that described above in connection with the embodiment illustrated on the Figures 1 to 4 , that is to say consisting of several circular orifices 181 arranged along a straight line.

Le présent mode de réalisation se distingue par le fait que le passage 18 est ménagé au sein d'une zone interne non scellée 271 du cordon de scellage 27, située dans son encombrement 30 (entre ses bordures intérieure 28 et extérieure 29). Cette zone 271 est en fait dépourvue de matière de scellage activée sur les orifices 181, ainsi que sur leurs pourtours ; elle présente ici une forme générale oblongue ou rectangulaire.The present embodiment is distinguished by the fact that the passage 18 is formed within an unsealed internal area 271 of the sealing bead 27, located in its space 30 (between its inner edges 28 and outer 29). This zone 271 is in fact devoid of activated sealing material on orifices 181, as well as on their periphery; it presents here a generally oblong or rectangular shape.

Cette structure particulière est intéressante pour éviter le colmatage du passage 18 par la matière du cordon de scellage 27, susceptible d'empêcher la détente de la surpression interne au travers de ce passage 18 à l'ouverture.
Cette structure particulière permet également de libérer simultanément les orifices 181, dès l'ouverture de la zone interne non scellée 271.
This particular structure is interesting to prevent clogging of the passage 18 by the material of the sealing bead 27, capable of preventing the expansion of the internal overpressure through the passage 18 at the opening.
This particular structure also makes it possible to simultaneously release the orifices 181 as soon as the unsealed internal zone 271 is opened.

Encore un autre mode de réalisation pour l'anneau 10 est illustré par la figure 7.Yet another embodiment for the ring 10 is illustrated by the figure 7 .

Cet anneau 10 est encore similaire à celui décrit ci-dessus en relation avec la figure 7, avec le passage de gaz 18 ménagé au sein d'une zone interne non scellée 271 et dans l'encombrement 30 du cordon de scellage 27.This ring 10 is still similar to that described above in relation to the figure 7 , with the gas passage 18 formed within an unsealed internal zone 271 and in the space 30 of the sealing bead 27.

Le passage 18 se distingue ici par le fait qu'il consiste en un unique orifice 181 en forme de fente, dont la longueur est par exemple comprise entre 10 et 20 mm et dont la largeur est avantageusement comprise entre 0,5 et 3 mm. La zone 271 dépourvue de matière de scellage activée présente encore ici une forme générale oblongue ou rectangulaire.The passage 18 is distinguished here by the fact that it consists of a single orifice 181 in the form of a slot, whose length is for example between 10 and 20 mm and whose width is advantageously between 0.5 and 3 mm. The zone 271 devoid of activated sealing material still has a general oblong or rectangular shape.

L'axe longitudinal de cette fente 181 est ici rectiligne, mais il pourrait présenter une courbure parallèle à la bordure extérieure 16 de la collerette 13.The longitudinal axis of this slot 181 is here rectilinear, but it could have a curvature parallel to the outer edge 16 of the flange 13.

La figure 8 représente une variante de réalisation pour l'anneau 10 selon les figures 1 à 4.The figure 8 represents an alternative embodiment for the ring 10 according to the Figures 1 to 4 .

On retrouve l'anneau 10 portant un cordon de scellage 27 présentant une zone d'amorçage de rupture 31 munie d'un tronçon saillant 32 au niveau de sa bordure extérieure 29 et d'un tronçon concave 37 au niveau de sa bordure intérieure 28.There is the ring 10 carrying a sealing bead 27 having a rupture initiation zone 31 provided with a protruding section 32 at its outer edge 29 and a concave section 37 at its inner edge 28.

Dans ce mode de réalisation, le passage 18 consiste en un orifice circulaire 181 ménagé sur la collerette 13 entre la bordure intérieure 28 du cordon de scellage 27 et la bordure intérieure 14 de ladite collerette 13, en l'occurrence au sein de son tronçon concave 37.In this embodiment, the passage 18 consists of a circular orifice 181 formed on the flange 13 between the inner edge 28 of the sealing bead 27 and the inner edge 14 of said flange 13, in this case within its concave section. 37.

Là encore, cette forme de réalisation vise à limiter le risque de colmatage du passage 18 par la matière du cordon de scellage 27.Again, this embodiment aims to limit the risk of clogging of the passage 18 by the material of the sealing bead 27.

En pratique, ce mode de réalisation nécessite la dégradation complète de la zone d'amorçage de rupture 31 pour autoriser le cheminement des gaz internes du contenant 3 (en surpression) au travers du passage 18 prévu à cet effet, avant libération de la lumière interne 15.
Là encore, il convient de poursuivre le pelage de la membrane d'obturation 11 pour ouvrir la lumière centrale 15.
In practice, this embodiment requires the complete degradation of the rupture initiation zone 31 to allow the flow of the internal gases of the container 3 (under pressure) through the passage 18 provided for this purpose, before release of the internal light 15.
Again, it is necessary to continue the peeling of the sealing diaphragm 11 to open the central lumen 15.

La figure 9 représente également une variante de réalisation pour l'anneau 10 selon les figures 1 à 4.The figure 9 also represents an alternative embodiment for the ring 10 according to the Figures 1 to 4 .

Dans ce mode de réalisation, l'anneau 10 porte encore un cordon de scellage 27 présentant une zone d'amorçage de rupture 31 munie d'un tronçon saillant 32 au niveau de sa bordure extérieure 29 et d'un tronçon concave 37 au niveau de sa bordure intérieure 28.In this embodiment, the ring 10 still carries a sealing bead 27 having a rupture initiation zone 31 provided with a protruding portion 32 at its outer rim 29 and a concave section 37 at the level of its inner border 28.

Le passage 18 consiste ici en une encoche 182 ménagée depuis la bordure intérieure 14 de la collerette 13 de l'anneau 10 et s'étendant en direction de sa bordure extérieure 16.
En d'autres termes, cette encoche 182 définit un passage pour la circulation de gaz (prolongeant la lumière centrale 15), tenant compte d'une ligne virtuelle continue 143 définie par la forme générale de la bordure intérieure 14 de la collerette 13.
L'encoche 182 épouse ici le tronçon concave 37 de la zone d'amorçage de rupture 31.
The passage 18 here consists of a notch 182 formed from the inner edge 14 of the flange 13 of the ring 10 and extending towards its outer edge 16.
In other words, this notch 182 defines a passage for the circulation of gas (extending the central lumen 15), taking into account a continuous virtual line 143 defined by the general shape of the inner edge 14 of the flange 13.
The notch 182 here marries the concave section 37 of the rupture initiation zone 31.

Selon une variante de réalisation, ce passage 18 en forme d'encoche pourrait être adapté sur toute autre forme de cordon de scellage 27 (éventuellement dépourvu d'une zone d'amorçage de rupture 31).According to an alternative embodiment, this passage 18 in the form of notch could be adapted to any other form of sealing bead 27 (possibly lacking a rupture initiation zone 31).

En pratique, comme décrit ci-dessus en relation avec la figure 8, ce mode de réalisation nécessite également la dégradation complète de la zone d'amorçage de rupture 31 pour autoriser le cheminement des gaz internes du contenant 3 (en surpression) au travers du passage 18 prévu à cet effet.
Là encore, il convient de poursuivre le pelage de la membrane d'obturation 11 pour ouvrir la lumière centrale 15.
In practice, as described above in relation to the figure 8 this embodiment also requires the complete degradation of the rupture initiation zone 31 to allow the flow of the internal gases of the container 3 (overpressure) through the passage 18 provided for this purpose.
Again, it is necessary to continue the peeling of the sealing diaphragm 11 to open the central lumen 15.

De manière générale, le couvercle selon l'invention permet donc une détente de la surpression interne d'un contenant lors de l'initiation de l'ouverture, avant le dégagement de sa lumière centrale, supprimant ainsi les risques d'une projection ou d'une pulvérisation du produit conditionné.In general, the lid according to the invention therefore allows a relaxation of the internal pressure of a container during the initiation of the opening, before the release of its central lumen, thus eliminating the risk of projection or d spraying the packaged product.

Selon un autre mode de réalisation non représenté, la membrane d'obturation est rapportée sur le contenant par une technique dite de « thermoscellage direct ».According to another embodiment not shown, the closure membrane is attached to the container by a technique called "direct heat sealing".

Dans ce cadre, la collerette 13 est réalisée monobloc avec la paroi latérale 4 du corps de contenant 2.
La bordure extérieure 16 de cette collerette 13 est ainsi raccordée, par au moins une ligne de pliage monobloc, avec la bordure d'extrémité 5 de cette paroi latérale 4.
In this context, the flange 13 is made in one piece with the side wall 4 of the container body 2.
The outer edge 16 of this flange 13 is thus connected, by at least one monobloc fold line, to the end edge 5 of this side wall 4.

Un tel contenant est par exemple fabriqué par emboutissage d'un flan métallique, pour la formation d'une paroi latérale tubulaire raccordée à une paroi de fond dans laquelle est découpée une portion centrale afin d'obtenir la lumière centrale bordée par la collerette monobloc.Such a container is for example manufactured by stamping a metal blank, for the formation of a tubular side wall connected to a bottom wall in which is cut a central portion to obtain the central lumen flanked by the one-piece flange.

Le ou les passages de gaz sont convenablement ménagés dans cette collerette, avant ou après découpe de la portion centrale.The gas passage or passages are suitably formed in this collar, before or after cutting the central portion.

La membrane d'obturation pelable est ensuite convenablement rapportée sur cette collerette monobloc par thermoscellage, avant remplissage avec le produit à conditionner et obturation de l'ouverture opposée.The peelable sealing membrane is then suitably attached to this monoblock flange by heat sealing before filling with the product to be packaged and sealing the opposite opening.

Selon une variante, le corps de contenant est réalisé monobloc, par exemple (i) par emboutissage d'un flan métallique, pour la formation d'une paroi latérale tubulaire raccordée à une paroi de fond, puis (ii) par roulage et/ou emboutissage de la bordure libre de la paroi latérale tubulaire pour former la collerette monobloc.According to a variant, the container body is made in one piece, for example (i) by stamping a metal blank, for the formation of a tubular side wall connected to a bottom wall, and then (ii) by rolling and / or stamping the free edge of the tubular side wall to form the one-piece collar.

Le ou les passages de gaz sont convenablement ménagés dans cette collerette, avant ou après sa formation.The gas passage or passages are suitably formed in this collar, before or after its formation.

La membrane d'obturation pelable est convenablement rapportée sur cette collerette monobloc par thermoscellage, après remplissage avec le produit à conditionner.The peelable sealing membrane is suitably attached to this one-piece collar by heat sealing, after filling with the product to be packaged.

Claims (15)

Contenant destiné à recevoir un produit en poudre et destiné à présenter une surpression interne, lequel contenant (3) comprend : (i) une partie interne (13) en forme de collerette, destinée à s'étendre sur le pourtour d'une ouverture (6) à obturer, laquelle collerette (13) est délimitée par une face inférieure, une face supérieure (17), une bordure intérieure (14) définissant une lumière centrale (15) et une bordure extérieure (16) raccordée à une paroi latérale (4) du corps de contenant (2), et (ii) une membrane d'obturation pelable (11) destinée à obturer ladite lumière centrale (15), comportant une face de dessus (21) et une face de dessous (20), et dont le contour extérieur de la face de dessous (20) est fixé hermétiquement sur la face supérieure (17) de ladite collerette (13) par le biais d'un cordon de scellage (27), laquelle membrane d'obturation (11) est munie d'au moins une languette de traction (23) pour autoriser son pelage par rapport à ladite collerette (13) par dégradation dudit cordon de scellage (27),
caractérisé en ce que ladite collerette (13) est munie d'au moins un passage (18) pour la circulation de gaz, lequel passage (18) est destiné à être obturé par ladite membrane d'obturation rapportée (11) et est situé en regard de ladite languette de traction (23) pour libérer la surpression interne du contenant (3) lors de l'initiation du pelage de ladite membrane d'obturation (11).
Container for receiving a powdered product and intended to have an internal overpressure, which container (3) comprises: (I) an internal portion (13) in the form of a flange, intended to extend around the periphery of an opening (6) to be closed, which flange (13) is delimited by a lower face, an upper face (17) an inner rim (14) defining a central lumen (15) and an outer rim (16) connected to a side wall (4) of the container body (2), and (ii) a peelable sealing membrane (11) for closing off said central lumen (15), having a top face (21) and a bottom face (20), and whose outer contour of the bottom face ( 20) is hermetically fixed on the upper face (17) of said flange (13) by means of a sealing bead (27), which sealing diaphragm (11) is provided with at least one pull tab ( 23) to allow its peeling relative to said flange (13) by degradation of said sealing bead (27),
characterized in that said collar (13) is provided with at least one passage (18) for the circulation of gas, which passage (18) is intended to be closed by said attached sealing diaphragm (11) and is located in view of said pull tab (23) to release the internal pressure of the container (3) during the initiation of peeling said sealing membrane (11).
Contenant selon la revendication 1, caractérisé en ce que ledit passage (18) consiste en au moins un orifice (181) ménagé au travers de la collerette (13), entre ses bordures intérieure (14) et extérieure (16).Container according to claim 1, characterized in that said passage (18) consists of at least one orifice (181) formed through the flange (13) between its inner (14) and outer (16) edges. Contenant selon la revendication 2, caractérisé en ce que le ou les orifices (181) définissent ensemble un passage (18) dont la surface est comprise entre 0,5 et 30 mm2.Container according to claim 2, characterized in that the orifices (181) together define a passage (18) whose surface is between 0.5 and 30 mm 2 . Contenant selon l'une quelconque des revendications 2 ou 3, caractérisé en ce que le ou les orifices (181) ont une forme générale circulaire dont le diamètre est compris entre 0,5 et 1 mm, et sont au nombre de 1 à 10.Container according to any one of claims 2 or 3, characterized in that the orifices (181) have a generally circular shape whose diameter is between 0.5 and 1 mm, and are 1 to 10 in number. Contenant selon l'une quelconque des revendications 2 ou 3, caractérisé en ce que le ou les orifices (181) consistent en une fente allongée, dont la longueur est comprise entre 10 et 20 mm et dont la largeur est comprise entre 0,5 et 3 mm.Container according to any one of claims 2 or 3, characterized in that the orifice or openings (181) consist of an elongated slot, the length of which is between 10 and 20 mm and whose width is between 0.5 and 3 mm. Contenant selon l'une quelconque des revendications 2 à 5, caractérisé en ce que le ou les orifices (181) ménagés dans la collerette (13) se situent dans l'encombrement (30) du cordon de scellage (27).Container according to any one of claims 2 to 5, characterized in that the or openings (181) formed in the flange (13) are in the space (30) of the sealing bead (27). Contenant selon la revendication 6, caractérisé en ce que le cordon de scellage (27) comporte au moins une zone interne non scellée (271), et en ce que le ou les orifices (181) sont ménagés dans ladite zone interne non scellée (271).Container according to claim 6, characterized in that the sealing bead (27) has at least one unsealed internal area (271), and that the orifices (181) are formed in said unsealed internal area (271). ). Contenant selon l'une quelconque des revendications 2 à 5, caractérisé en ce que ledit passage (18) est ménagé entre une bordure intérieure (28) du cordon de scellage (27) et une bordure intérieure (14) de la collerette (13).Container according to any one of claims 2 to 5, characterized in that said passage (18) is provided between an inner edge (28) of the sealing bead (27) and an inner edge (14) of the flange (13) . Contenant selon la revendication 1, caractérisé en ce que ledit passage (18) consiste en une encoche (182) ménagée depuis ladite bordure intérieure (14) de la collerette (13) et s'étendant en direction de sa bordure extérieure (16).Container according to claim 1, characterized in that said passage (18) consists of a notch (182) formed from said inner edge (14) of the flange (13) and extending towards its outer edge (16). Contenant selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la collerette (13) comporte plusieurs passages (18) qui sont répartis régulièrement sur sa circonférence.Container according to any one of claims 1 to 9, characterized in that the flange (13) has a plurality of passages (18) which are regularly distributed on its circumference. Contenant selon l'une quelconque des revendications 1 à 10, caractérisé en ce que les bordures intérieure (14) et extérieure (16) de la collerette (13) s'étendent parallèlement, ou au moins approximativement parallèlement, l'une par rapport à l'autre, lui conférant une largeur constante ou approximativement constante sur toute sa périphérie.Container according to any one of claims 1 to 10, characterized in that the inner (14) and outer (16) edges of the collar (13) extend in parallel, or at least approximately parallel, with respect to the other, conferring a constant or approximately constant width on its entire periphery. Contenant selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la collerette (13) se compose d'une partie annulaire périphérique (131) prolongée par un segment de disque (132).Container according to any one of claims 1 to 10, characterized in that the flange (13) consists of a peripheral annular portion (131) extended by a disc segment (132). Contenant selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le cordon périphérique de scellage (27) est délimité par une bordure intérieure (28) et par une bordure extérieure (29), en ce que ledit cordon de scellage (27) comporte une zone d'amorçage de rupture (31) ménagée au niveau de ladite languette de traction (23), laquelle zone d'amorçage de rupture (31) comprend un tronçon saillant (32) de ladite bordure extérieure (29) dudit cordon de scellage (27) qui forme une excroissance locale s'étendant vers ladite bordure extérieure (16) de ladite collerette (13), pour réduire l'effort nécessaire à l'amorçage de la rupture dudit cordon de scellage (27) par une traction sur ladite languette (23) et faciliter ainsi l'initiation du pelage de ladite membrane d'obturation (11), et en ce que l'un au moins des passages (18) est ménagé au niveau de ladite zone d'amorçage de rupture (31).Container according to any one of claims 1 to 12, characterized in that the peripheral sealing bead (27) is delimited by an inner edge (28) and an outer edge (29), in that said sealing bead ( 27) comprises a rupture initiation zone (31) formed at said pull tab (23), which rupture initiation zone (31) comprises a projecting section (32) of said outer edge (29) of said sealing bead (27) which forms a local protuberance extending towards said outer rim (16) of said flange (13), to reduce the effort required to initiate breakage of said bead (27) by a traction on said tongue (23) and thus facilitate the initiation of the peeling of said closure membrane (11), and in that at least one of the passages (18) is formed at said leveling zone of rupture (31). Contenant selon l'une quelconque des revendications 1 à 13, caractérisé en ce que : (i) la collerette (13) est réalisée monobloc avec la paroi latérale (4) du corps de contenant (2), ou (ii) le contenant (3) est muni d'un anneau rapporté (10) comportant - une partie externe (12), fixée sur une bordure (5) du corps de contenant (2) délimitant ladite ouverture (6) à obturer, et - une partie interne (13) formant une collerette rapportée, destinée à s'étendre sur le pourtour de ladite ouverture (6) à obturer. Container according to any one of claims 1 to 13, characterized in that : (i) the flange (13) is made in one piece with the side wall (4) of the container body (2), or (ii) the container (3) is provided with an insert ring (10) comprising - an external part (12) fixed on a border (5) of the container body (2) delimiting said opening (6) to be closed, and an inner part (13) forming an attached collar intended to extend around the periphery of said opening (6) to be closed. Anneau pour un couvercle (1) destiné à équiper un corps de contenant (2), éventuellement équipé d'une membrane d'obturation pelable (11), selon l'une quelconque des revendications 1 à 14.Ring for a lid (1) intended to equip a container body (2), possibly equipped with a peelable sealing membrane (11), according to any one of claims 1 to 14.
EP11306710.2A 2011-12-20 2011-12-20 Container with peelable blocking membrane, intended for holding a powder product and intended for having a higher internal pressure Withdrawn EP2607256A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP11306710.2A EP2607256A1 (en) 2011-12-20 2011-12-20 Container with peelable blocking membrane, intended for holding a powder product and intended for having a higher internal pressure
JP2014548026A JP2015501768A (en) 2011-12-20 2012-12-20 Container with detachable sealing membrane containing powder material and having internal overpressure
CN201280063397.8A CN104010944A (en) 2011-12-20 2012-12-20 Container Having A Peelable Sealing Membrane, Which Is To Receive A Powder Material And Have Excess Internal Pressure
US14/366,454 US20150014317A1 (en) 2011-12-20 2012-12-20 Container having a peelable sealing membrane, which is to receive a powder material and have excess internal pressure
BR112014014969A BR112014014969A2 (en) 2011-12-20 2012-12-20 container having a detachable sealing membrane, which must be powdered and has internal overpressure
AU2012356985A AU2012356985A1 (en) 2011-12-20 2012-12-20 Container having a peelable sealing membrane, which is to receive a powder material and have excess internal pressure
RU2014129809A RU2014129809A (en) 2011-12-20 2012-12-20 CAPACITY OF DEFLECTABLE LOCKING MEMBRANE, INTENDED FOR FILLING WITH POWDER PRODUCT AND UNDER EXCESSIVE INTERNAL PRESSURE
EP12808386.2A EP2794408A1 (en) 2011-12-20 2012-12-20 Container having a peelable sealing membrane, which is to receive a powder material and have excess internal pressure
PCT/EP2012/076444 WO2013092891A1 (en) 2011-12-20 2012-12-20 Container having a peelable sealing membrane, which is to receive a powder material and have excess internal pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11306710.2A EP2607256A1 (en) 2011-12-20 2011-12-20 Container with peelable blocking membrane, intended for holding a powder product and intended for having a higher internal pressure

Publications (1)

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EP2607256A1 true EP2607256A1 (en) 2013-06-26

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EP11306710.2A Withdrawn EP2607256A1 (en) 2011-12-20 2011-12-20 Container with peelable blocking membrane, intended for holding a powder product and intended for having a higher internal pressure
EP12808386.2A Withdrawn EP2794408A1 (en) 2011-12-20 2012-12-20 Container having a peelable sealing membrane, which is to receive a powder material and have excess internal pressure

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EP12808386.2A Withdrawn EP2794408A1 (en) 2011-12-20 2012-12-20 Container having a peelable sealing membrane, which is to receive a powder material and have excess internal pressure

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US (1) US20150014317A1 (en)
EP (2) EP2607256A1 (en)
JP (1) JP2015501768A (en)
CN (1) CN104010944A (en)
AU (1) AU2012356985A1 (en)
BR (1) BR112014014969A2 (en)
RU (1) RU2014129809A (en)
WO (1) WO2013092891A1 (en)

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ITUA20164087A1 (en) * 2016-06-06 2017-12-06 Eng Team Srl PLASTIC TIN P.E.T. MADE WITH BLOWING PROCESS OF CLOSING CLOSURE AND MULTICOMPOSED SCREW COVER FOR FOOD
EP3838789A1 (en) * 2019-12-20 2021-06-23 Stefan Eylert Reclosable container and method of manufacturing same

Also Published As

Publication number Publication date
EP2794408A1 (en) 2014-10-29
US20150014317A1 (en) 2015-01-15
RU2014129809A (en) 2016-02-10
WO2013092891A1 (en) 2013-06-27
JP2015501768A (en) 2015-01-19
CN104010944A (en) 2014-08-27
AU2012356985A1 (en) 2014-07-10
BR112014014969A2 (en) 2017-06-13

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