EP1773683B1 - Emballage comprenant un recipient en matiere plastique obture par un opercule pelable thermoscellee audit recipient - Google Patents

Emballage comprenant un recipient en matiere plastique obture par un opercule pelable thermoscellee audit recipient Download PDF

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Publication number
EP1773683B1
EP1773683B1 EP05786144A EP05786144A EP1773683B1 EP 1773683 B1 EP1773683 B1 EP 1773683B1 EP 05786144 A EP05786144 A EP 05786144A EP 05786144 A EP05786144 A EP 05786144A EP 1773683 B1 EP1773683 B1 EP 1773683B1
Authority
EP
European Patent Office
Prior art keywords
layer
sealing
packaging according
extruded
coextruded
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.)
Not-in-force
Application number
EP05786144A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1773683A1 (fr
Inventor
Jean-Luc Rick
Isabelle Jenny
Guy Boiron
Alain Grayer
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.)
Amcor Flexibles Selestat SAS
Original Assignee
Alcan Packaging Selestat
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34948210&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1773683(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Alcan Packaging Selestat filed Critical Alcan Packaging Selestat
Priority to SI200531035T priority Critical patent/SI1773683T1/sl
Priority to PL05786144T priority patent/PL1773683T3/pl
Publication of EP1773683A1 publication Critical patent/EP1773683A1/fr
Application granted granted Critical
Publication of EP1773683B1 publication Critical patent/EP1773683B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
    • B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
    • B65D77/2044—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure

Definitions

  • the invention relates to the field of packaging comprising pots or plastic containers generally containing fresh dairy products, typically yoghurt, sealed with lids.
  • These covers are formed of a flexible multilayer material comprising a sealing layer and adapted to be sealed, typically by heat sealing, on a sealing pad of a pot or plastic container, in order to seal it.
  • This sealing range defines a filling and sampling aperture, and the lids, once heat-sealed on the range of the pot, can be separated from the pot by peeling.
  • These lids may either form pre-cut lids or form a lidding leaf.
  • lidding sheets corresponding to the preamble of claim 1 attached and intended to close rigid trays of large size.
  • These lidding sheets have the following structure: sealing layer of PP and PE / adhesion promoter layer / layer of barrier material, optionally supplemented with an adhesive layer and a protective layer.
  • These sheets have a sealing layer of about 12 ⁇ m and are manufactured by laminating this sealing layer to the barrier material layer via the adhesion promoter.
  • a disadvantage of the usual lids today is that they often tear during peeling when opening packages and they are detached as part of the beach.
  • the sealing conditions are not optimal, especially in the industrial sealing conditions, that the adhesion to the boundary surface between the seal layer of the seal and the substrate of the sealing range. sealing is so weak that it can occur, already during transport, a local separation of the lid and the range of the pot in the sealing region and thus an unplanned opening and in some cases even undetectable of the package, so that the shelf life of the content is no longer guaranteed.
  • the object of the invention is to provide lids, in the form of lidding sheets in a reel or in the form of pre-cut lidded stacks, which do not have the abovementioned disadvantages of lids made of aluminum foil or of paper composite multilayer material. / PET currently used and comprising a layer of sealing lacquer.
  • the invention relates to economical seals to manufacture and comply with current environmental guidelines for packaging materials.
  • the package comprises a plastic container having a range defining a filling and sampling aperture, said container containing a product, typically a food product, and a lid of a flexible sealing foil sealed by heat-sealing on the container surface by means of a sealing layer and detachable from it by peeling, said seal being secured to said range of said container by a sealing bead, the lidding sheet comprising a support sheet and an extruded layer or a coextruded layer of plastic material, said extruded layer forming said sealing layer, said coextruded layer comprising a layer forming said sealing layer, said extruded or coextruded layer having a thickness Ec chosen so that said peeling of the lid causes a cohesive rupture of the extruded or coextruded layer, the package being characterized in that said extruded or coextruded layer is formed of a material chosen so as to adhere, by its outer face, to said support sheet, and by its inner face, to said range during
  • the invention also relates to a seal intended to be sealed on this packaging, and a method of manufacturing the sealing foil.
  • the covers according to the invention solve the problems posed. Indeed, on the one hand, the applicant was surprised to find that it was possible to have an extruded layer providing the sealing layer function, and contributing significantly to the thickness of the lid, and that to his holding or his "hand", that is to say the impression felt by the consumer during the manual gripping of the edge of the lid for the opening of the sealed package. On the other hand, it has been able to observe both the ease of opening by peeling of the lid and the stability of the peel force, probably due to the cohesive rupture of the extruded or coextruded layer, as well as the relative wide latitude or tolerance of sealing conditions, which is very important in practice.
  • the lids according to the invention probably due to a relatively large extruded layer thickness, ensured both a high stability of the peel force and especially a low sensitivity of the final seal. containers to the heat sealing conditions. Indeed, especially in the case where the covers form a sheet of operculum of large width, typically greater than 300 mm, there may be local differences in pressure of the heat sealing jaws, in the direction of the width of the foil. lidding. Thus, it appeared that the sealing quality of the extruded or coextruded layer was independent of the depth of the annular groove formed by the pressure exerted by a sealing tool during heat sealing.
  • these covers are of economical manufacture taking into account that a large part of the lid is constituted by an extruded or coextruded layer, so that at least the major part of the lid is an extruded or coextruded layer formed from a thermoplastic material in the least elaborate form that is, namely in the form of granules.
  • cohesive rupture of the extruded or coextruded layer is meant that, during the peel removal of a lid made with the foil of the invention according to the invention and sealed against the range of the opening of a plastic container or container, material separation occurs within the extruded or coextruded layer, with a portion of the extruded layer remaining on the sealing range of the container and another portion on the carrier sheet of the container; operculum.
  • the structure of the extruded or coextruded layer is chosen depending on the plastic material used for the carrier sheet and the container material. Indeed, the adhesion between the support sheet and the extruded or coextruded layer on the one hand, and between the extruded or coextruded layer and the container on the other hand after the sealing of the lid on the range of the container, must at least in those portions of the sealing region which are critical for seal sealing, to be larger than the cohesive adhesion within the extruded or coextruded layer, so as to have cohesive failure of the extruded layer.
  • the layered structure of the extruded or coextruded layer is selected depending on the properties desired for the seal.
  • the figure 1 is a perspective view of a plurality of packages (1) comprising four containers or containers (10) made of plastic material sealed with lids (16) sealed and formed into a lidding sheet (17).
  • the peeling of a lid (16) was initiated by manually pulling on a corner of the cover or tear-off tab (19).
  • the seal (16) has been partially removed on a portion of the container (10) where the sealing trace (183) of the sealing bead (18) has been shown , the seal (16) being present on the other part where the sealing bead (18) has been shown.
  • the figure 2 shows, in enlarged view and in a vertical plane II perpendicular to the plane of the lid, a section of the sealing cord (18) of a package (1) of the Fig. 1 , comprising a cover (16) consisting of a carrier sheet (20) and an extruded layer (22 ') forming said sealing layer (38') or a coextruded layer (22) comprising said sealing layer ( 38), the layers of said coextruded layer (22) having not been shown to be distinct from each other.
  • the Fig. 3 represents a cross section of a modality of a coextruded layer (22) comprising three layers (34), (36) and (38), while the figure 4 represents a cross section of another coextruded layer modality comprising two layers (34) and (38).
  • the layer (36) has not been hatched.
  • the figure 5 illustrates schematically in cross-section similar to that of the figure 3 manufacturing a lidding sheet (17) by supplying a carrier sheet (20) and coextruding a layer (22).
  • the layers (21) and (40) have not been hatched.
  • the figure 6 analogous to the right part of there figure 5 , represents a sealing sheet modality (17) in which the coextruded layer (22) is assembled to a support sheet (20) comprising successively externally: a primer layer (39), an imprint ( 41) and an overprint varnish layer (42).
  • a primer layer (39), an imprint ( 41) and an overprint varnish layer (42) In this figure, the layers (39), (40) and (42) have not been hatched.
  • the figure 7 is a perspective view of a lidding sheet reel (17).
  • the figure 8 is at its upper part, a cross-sectional view of a stack (17 ') of pre-cut lids (16'), and at its lower part, a top view of a pre-cut seal (16 ') printed.
  • the support sheet (20) can be a plastic sheet.
  • carrier sheet is meant here the sheet which is coated on one side with the coextruded extruded layer (22 ') (22).
  • the carrier sheet although preferably made of plastic material, may also comprise a sheet of paper and / or aluminum.
  • other layers of plastic, aluminum or paper, possibly printed and provided with a protective lacquer may be disposed on the other side of said support sheet (20).
  • Said plastic sheet may be made of a plastic material chosen from: a polyester, in particular polyethylene terephthalate (PET), a polyolefin, in particular a polypropylene (PP), a polyamide (PA) or a cycloolefinic copolymer ( COC).
  • a plastic material chosen from: a polyester, in particular polyethylene terephthalate (PET), a polyolefin, in particular a polypropylene (PP), a polyamide (PA) or a cycloolefinic copolymer ( COC).
  • Said support sheet (20) is covered on one of its inner or outer faces by a metallization layer (21).
  • said metallization layer (21) may cover said outer face of said support sheet (20), as shown in FIG. figure 5 .
  • Said support sheet (20) can be obtained either from a film of said plastic material supplied in a reel, or possibly by a second extrusion or coextrusion from said plastic material supplied in the form of granules.
  • said support sheet and / or said metallization layer may comprise, on at least one of its faces, a layer of a primer (39, 40). .
  • the thickness of the carrier sheet (20) is generally between about 7 and 200 ⁇ m and depends on the size and weight of the contents of the container to be closed.
  • said extruded (22 ') or coextruded layer (22) may have a thickness Ec ranging from 5 ⁇ m to 80 ⁇ m, and typically from 15 ⁇ m to 60 ⁇ m.
  • said extruded (22 ') or coextruded layer (22) may have a thickness Ec ranging from 25 .mu.m to 40 .mu.m, and typically a thickness ranging from 30 .mu.m to 35 .mu.m.
  • the coextruded layer (22) may comprise three layers and have an adhesive layer (34) joined to the backing sheet (26), an intermediate layer (36) and a sealing layer (38) joined to the beach ( 12) of the container (10).
  • the coextruded layer (22) may comprise two layers and have an adhesive layer (34) joined to the carrier sheet (20) and a sealing layer (38) joined to the range (12) of the container (10) .
  • the adhesive layer (34) may contain at least one of the following components: graft copolymers and / or copolymers and / or terpolymers comprising acid groups or ionomers, metallocene PE, linear PE, EVA copolymers, EMA copolymers , copolymers of EEA, copolymers of EBA, mixtures of these components or a polyolefin with a tackifying resin.
  • Said adhesive layer (34) can have a thickness ranging from 2 microns to 10 microns.
  • Said sealing layer (38) can contain at least one of the following components: copolymer of ethylene and vinyl acetate (EVA), copolymer of ethylene and methyl acrylate (EMA), copolymer of ethylene and butyl acrylate (EBA), copolymer of ethylene and ethyl acrylate (EEA), terpolymers with ⁇ -olefin monomers comprising esters.
  • EVA copolymer of ethylene and vinyl acetate
  • EMA copolymer of ethylene and methyl acrylate
  • EBA copolymer of ethylene and butyl acrylate
  • EOA copolymer of ethylene and ethyl acrylate
  • terpolymers with ⁇ -olefin monomers comprising esters terpolymers with ⁇ -olefin monomers comprising esters.
  • Said sealing layer may comprise at least one of said components and at least one tackifying resin.
  • Said sealing layer may have a thickness ranging from 5 ⁇ m to 70 ⁇ m, and typically from 10 ⁇ m to 30 ⁇ m.
  • Said intermediate layer (36) may contain at least one of the following components: polyamide (PA), polymer and copolymer of cycloolefin (COC), homo- and copolymers of polyolefins with or without mineral or organic fillers.
  • the intermediate layer (36) may comprise a mineral filler such as, for example, talc, at a weight content typically ranging from 5% to 30%, so as to promote the cohesive failure of said intermediate layer during the opening of said packaging.
  • sealing layer (38, 38 ') may comprise an inorganic or organic filler, for example talc, at a weight content typically ranging from 5% to%, so as to promote the cohesive failure of said coating layer. sealing when opening said package.
  • Said intermediate layer (36) may have a thickness ranging from 2 microns to 40 microns.
  • the container (10) can be made of a material chosen from: a polystyrene (PS), a polyester (PET), a polyolefin, in particular polyethylene (PE) or polypropylene (PP), the polymer of vinyl chlorine (PVC).
  • PS polystyrene
  • PET polyester
  • PP polypropylene
  • PVC vinyl chlorine
  • Said cover (16) is typically a printed cover, a printed pattern (41) that can be formed on an outer face of said support sheet (20) or said metallization layer (21) or said primary attachment layer (39). ).
  • an overprint varnish (42) may cover said printed pattern (41).
  • Said operculum sheet (17) of said seal (16) may have a thickness ranging from 10 ⁇ m to 90 ⁇ m, said support sheet (20) having a thickness Es and said coextruded layer (22) having a thickness Ec such that the Ec / Es ratio is at least 1, and is typically between 2 and 4.
  • said sealing bead (18), formed during said heat sealing by a sealing tool (24), may comprise a collapsed annular central portion (180) bordered by two peripheral beads (181, 182), a inner bead (181) and an outer bead (182), said peripheral bead (181, 182) comprising an over-thickness t 'of said coextruded layer (22), said over-thickness being at least 1.5. .
  • Another object of the invention is constituted by a lid (16) intended to obtain, by heat-sealing on said container (10), said package (1) according to the invention, said lid (16) being a part of said foil lidding (17) or a pre-cut lid (16 ') of a stack (17') of pre-cut lids in said lidding foil (17).
  • Packaging (1) has been manufactured according to the figure 1 .
  • the Fig. 1 shows a provision with four pots or plastic containers (10) for packaging fresh products, for example yoghurt.
  • four pots (10) are assembled to each other.
  • Each pot (10) has a sealing pad (12) surrounding an opening (14) covered by a lid (16) of a lidding foil (17).
  • the operculum sheet 17 is sealed on the sealing pad (12) according to a sealing cord (18), cord (18) which has been shown in the bottom right of the figure 1 .
  • Peeling of the operculum (16) gives access to the opening (14) of the pot and allows to take all or part of the contents of the pot.
  • the individual pots (10) are assembled by the sealing pad (12) forming a plurality of closed pots, after filling, by a sealing sheet (17) forming a plurality of lids (16).
  • a sealing sheet (17) forming a plurality of lids (16.
  • common edge edges are provided, which can be easily separated by hand along marked or cut lines of weakness in the sealing range (12).
  • the lidding foil (17) is also cut into individual lids (16), so that each lid (16) can be removed individually.
  • Each cap (16) is thus freely applied to the sealing surface (12) of the pot (10) and sealed along the sealing bead (18), so that outside this sealing bead (18), the package (1) comprises a tear tab 19 at each of the four corners of the sealing range (12) of each pot (10).
  • the Fig. 2 shows the displacements or creep of material that occur during the sealing of the lidding foil (17) or the lid (16) on the sealing range (12) of the pot (10) of the figure 1 .
  • the sealing bead (18) comprises a collapsed annular central portion (180) bordered by two peripheral beads (181, 182), an inner bead (181) and an outer bead (182), said peripheral bead (181).
  • the sealing range (12) of the pot (10) comprises an annular groove (26), of depth t, corresponding to the annular central annular portion (180), and two sealing rings (28) and (29) corresponding to peripheral beads (181) and (182) of the sealing bead (18).
  • the material discharged by the formation of the groove (26) thus leads to the formation of sealing rings (28) and (29) on either side of the groove (26).
  • the coextruded layer (22) is discharged largely out of the groove (26). ) in the sealing range (12) of the pot (10), so that a thin annular central portion (32) substantially corresponding to said collapsed annular central portion (180) of the sealing bead (18) is formed, and that concentric annular beads (30) and (31) are formed with a thickness t 'greater than the thickness Ec of the coextruded layer (22), above the sealing rings (28) and (29).
  • the sealing bead (18) thus has, in particular thanks to these movements of material, a strong adhesion at the same time between the support sheet (20) and the coextruded layer (22), and between the coextruded layer (22) and the range (12) of the pot or container (10), which leads to a high sealing tightness of the sealing bead (18), especially in the sealing regions corresponding to the marks S1 to S5 of the figure 2 .
  • the lidding foil (17) for example has a support layer (20) of 12 ⁇ m polyethylene terephthalate (PET) with a coextruded layer (22) with a basis weight of 30 g / m 2 and the pot or container (10) is made of polystyrene (PS).
  • the support sheet (20) can for example still be printed and be provided with a protective lacquer with a basis weight of 1 g / m 2 .
  • a lidding sheet (17) having the extruded layer (22 ') forming said sealing layer (38') is manufactured according to the figure 2 .
  • a lidding sheet (17) having the coextruded layer (22) according to figure 3 comprises three layers: an adhesive layer (34), an intermediate layer (36) and a sealing layer (38).
  • a lidding sheet (17) having the coextruded layer (22) is also manufactured according to the figure 4 .
  • This coextruded layer (22) comprises three layers: an adhesive layer 34 and a sealing layer 38.
  • a lidding sheet (17) has also been manufactured as schematically illustrated on the figure 5 a supply sheet (20) comprising an outer metallization layer (21) and an inner layer of a bonding primer (40) was provided and coextruded on said carrier sheet (20) (22) comprising an adhesive layer (34) for adhering to the primer layer (40), an intermediate layer (36) and a sealing layer (38).
  • said lidding foil (17) represented on the right side of the figure 5 .
  • the sealing foil (17) of the figure 6 In a similar way, the sealing foil (17) of the figure 6 .
  • the coextruded layer (22) - or the extruded layer (22 ') - has been assembled to a support sheet (20) comprising successively externally: a primer layer ( 39), an imprint (41) and an overprint varnish layer (42).
  • a lidding foil (17) has been obtained in the form of a coil, as illustrated in FIG. figure 7 .
  • a stack (17 ') of pre-cut lids (16') was also formed from the lidding foil (17) in a coil of the figure 7 .
  • the lids (16, 16 ') according to the invention can be sealed on pots with sealing beads (18) of variable depth, without affecting the sealing of the packaging (1) and the adhesion of the seal on the pot, which is very advantageous in practice because it increases the adjustment tolerances of sealing tools on industrial line, and thus greatly reduces the scrap rate and health risks related to leaks in packaging (1).
  • the invention makes it possible to obtain operculas (16, 16 ') or sealing foils (17) that are economical to manufacture insofar as one can have lids with a fraction of at least 50% of the thickness or at least 50% of the mass corresponds to an extruded (22 ') or coextruded layer (22) formed from granulated plastic material. This fraction can be much higher and reach 60, 70 or even 80%.
  • the invention makes it possible to obtain, from one and the same support sheet (20), a whole family of lids (16, 16 ') or lidding foil (17) by varying the composition of the extruded layer (22 ') or coextruded layer (22), so that it is easy to have a wide variety of covers, with various properties, as regards their weight, their "hand", their barrier properties , their adhesion and peel force or opening force, etc ....

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP05786144A 2004-07-09 2005-07-05 Emballage comprenant un recipient en matiere plastique obture par un opercule pelable thermoscellee audit recipient Not-in-force EP1773683B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200531035T SI1773683T1 (sl) 2004-07-09 2005-07-05 EmbalaĹľa z vsebnikom iz umetne snovi, ki je zaprt z zavarjenim odstranljivim notranjim tesnilom
PL05786144T PL1773683T3 (pl) 2004-07-09 2005-07-05 Opakowanie zawierające pojemnik z tworzywa sztucznego zamknięty osłonką odrywalną, szczelnie zaciskaną termicznie na wspomnianym pojemniku

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0407699A FR2872788B1 (fr) 2004-07-09 2004-07-09 Emballage comprenant un recipient en matiere plastique obture par un opercule pelable thermoscellee audit recipient
PCT/FR2005/001717 WO2006016038A1 (fr) 2004-07-09 2005-07-05 Emballage comprenant un recipient en matiere plastique obture par un opercule pelable thermoscellee audit recipient

Publications (2)

Publication Number Publication Date
EP1773683A1 EP1773683A1 (fr) 2007-04-18
EP1773683B1 true EP1773683B1 (fr) 2010-03-17

Family

ID=34948210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05786144A Not-in-force EP1773683B1 (fr) 2004-07-09 2005-07-05 Emballage comprenant un recipient en matiere plastique obture par un opercule pelable thermoscellee audit recipient

Country Status (10)

Country Link
EP (1) EP1773683B1 (da)
AT (1) ATE461131T1 (da)
DE (1) DE602005020016D1 (da)
DK (1) DK1773683T3 (da)
ES (1) ES2342949T3 (da)
FR (1) FR2872788B1 (da)
PL (1) PL1773683T3 (da)
PT (1) PT1773683E (da)
SI (1) SI1773683T1 (da)
WO (1) WO2006016038A1 (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2952358B1 (fr) * 2009-11-06 2012-01-20 Alcan Packaging Selestat Systeme d'emballage pelable pour aliments frais a faible duree de conservation.
CN109130381A (zh) * 2018-07-06 2019-01-04 黄山永新股份有限公司 一种酸奶塑料杯封口盖膜

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1336878C (en) * 1988-09-08 1995-09-05 Roger Peter Genske Peelable packaging and sheet materials and compositions for use therein
TW203624B (da) * 1991-02-28 1993-04-11 Sumitomo Bakelite Co
US5342684A (en) * 1991-08-15 1994-08-30 R. J. Reynolds Tobacco Company Polymeric die-cuttable lidding materials
FR2716442B1 (fr) * 1994-02-23 1996-09-13 Lawson Mardon Trentesaux Sa Structure multicouche, destinée notamment à réaliser des opercules pour fermer des contenants.
US6264098B1 (en) * 1997-02-06 2001-07-24 Sonoco Development, Inc. Tubular container with a heat seal having non-symmetrical inner and outer beads

Also Published As

Publication number Publication date
SI1773683T1 (sl) 2010-08-31
FR2872788B1 (fr) 2007-09-07
DK1773683T3 (da) 2010-06-14
FR2872788A1 (fr) 2006-01-13
EP1773683A1 (fr) 2007-04-18
ES2342949T3 (es) 2010-07-19
WO2006016038A1 (fr) 2006-02-16
DE602005020016D1 (de) 2010-04-29
PT1773683E (pt) 2010-06-16
ATE461131T1 (de) 2010-04-15
PL1773683T3 (pl) 2010-08-31

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