EP2230190B1 - Verschlussfolie mit Grifflasche zum Verschliessen eines Behälters - Google Patents

Verschlussfolie mit Grifflasche zum Verschliessen eines Behälters Download PDF

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Publication number
EP2230190B1
EP2230190B1 EP20100305268 EP10305268A EP2230190B1 EP 2230190 B1 EP2230190 B1 EP 2230190B1 EP 20100305268 EP20100305268 EP 20100305268 EP 10305268 A EP10305268 A EP 10305268A EP 2230190 B1 EP2230190 B1 EP 2230190B1
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EP
European Patent Office
Prior art keywords
lid
strip
film
sealing
reinforcing film
Prior art date
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Active
Application number
EP20100305268
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English (en)
French (fr)
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EP2230190A1 (de
Inventor
Stéphane Triquet
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.)
Manufacture Generale de Joints SAS
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Manufacture Generale de Joints SAS
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Publication of EP2230190A1 publication Critical patent/EP2230190A1/de
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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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/04—Discs
    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B65D41/045—Discs
    • 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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/08—Flexible adhesive strips adapted to seal filling or discharging apertures
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0015—Upper closure of the 41-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0093—Membrane

Definitions

  • the subject of the invention is a perforated lid on part of its thickness and provided with a tear-off tab, said lid being intended for closing a container. It also relates to a seal consisting of said seal associated with a support. Finally, it relates to a container of the rigid or flexible bottle type provided with the seal or seal.
  • the majority of the devices of the type sprinkler today on the market are in the form of a container having on the rim, a grid or a perforated plate, rigid, made of plastic, which is attached or is an integral part of the container .
  • the grid is usually covered by a cap or capsule, depending on the type of packaging. In some cases, for reasons of conservation of the content, the grid or plate is covered with a film, which is removed permanently from the first use.
  • This type of sprinklers remains relatively expensive to produce and does not give any satisfaction, especially with respect to the tightness of the grid at the level of the rim.
  • US Patent 5513781 discloses a lid according to the preamble of claim 1 and comprising an upper layer and a lower layer provided with perforations, the layers being completely separable from each other. The contents of the container then becomes sensitive to moisture, especially in the event that the lid is not immediately replaced.
  • the document EP0040797 describes a joint associating a support and a cover.
  • the lid has holes in its thickness closed by the presence of a peelable film just covering the surface of the orifice.
  • the problem to be solved by the invention is that of developing a new type of sprinkler that responds to the problem of tightness, especially at the level of the rim, and whose production cost is limited.
  • the Applicant had the idea to propose a cap, the upper layer is solid and peelable and the lower layer is provided with perforations and / or pre-drilled holes, the lower and upper layers being connected by a hinge , allowing, if necessary, not to resort to the presence of a capsule or a stopper.
  • the seal may be associated with a support to form a seal.
  • the invention relates to a seal for sealing a container, for example of the sprinkler type, comprising a sealant film having, throughout its thickness, one or more perforations and / or one or more pre-drilled holes on which is applied at least one reinforcing film devoid of perforations and / or pre-drilled holes and provided with an extension constituting a pull tab, the sealing film and the reinforcing film being secured to one another by means of an adhesive so that the reinforcing film can be partly separated from the sealing film at the time of tearing by the tongue.
  • the invention is characterized in that the portion of the lid provided with the tongue is provided on its underside, opposite the area at which the tongue is located, an adhesive prohibiting the final separation of the upper and lower parts of the lid thus forming a hinge, the remaining part of the lower face, in particular the periphery, being provided with a repositionable adhesive.
  • the adhesive located opposite the tongue acts as a hinge, the presence of repositionable adhesive at the periphery, to reposition the upper part of the lid on the lower part after use.
  • the container will be closed by means of a simple seal and may be used as a sprinkler or the like, depending on the nature of the perforation (s) and / or pre-drilled holes.
  • the tongue is constituted by an extension formed in the thickness of the reinforcing film.
  • the portion of the lid extending by a tongue may consist of one or more reinforcing films depending on the thickness of said film, so that the film of reinforcement does not tear at the time of pulling.
  • the tongue is formed over the entire thickness of the portion of the cap without perforations and / or pre-drilled holes. Indeed, when the upper part of the lid consists of two reinforcing films, the tongue may be formed at one or other of the two reinforcing films.
  • the reinforcing films provided with the tongue are 2 in number, respectively an upper reinforcing film and a lower reinforcing film, an impression being applied between the two films.
  • the material constituting the tongue and therefore the reinforcing film will be selected so that the resistance of said material is greater than that of the pulling force of the lid.
  • the reinforcing film is, for example, a biaxially oriented polyester film with a thickness of between 4 and 40 ⁇ m, in practice from 10 to 15 ⁇ m.
  • the lid is heat-sealable by induction.
  • a sheet made of a dielectric material in practice, an aluminum sheet with a thickness advantageously between 10 and 50 ⁇ m, of the order of example of 20 microns
  • the sheet made of a dielectric material is itself covered with at least one reinforcing film.
  • the sheet made of a conductive material is separated from the reinforcing film mentioned above by a foam having a thickness of between 0.4 and 4 mm, advantageously of the order of 1 mm, of density between 50 and 500 kg / m 3 , advantageously of the order of 250 kg / m 3 .
  • the foam is in practice a polyolefin foam.
  • the seal presents, between the sealing film and the aluminum foil, again a reinforcing film.
  • the lower part of the cover that is to say the unfitted portion of the tongue, has one or more perforations and / or a or several predrilled holes depending on the desired applications. In the case of a single perforation, this one will not exceed the internal diameter of the rim of the container.
  • the embodiment in which the lower part of the lid, in practice the assembly between the aluminum sheet and the sealing film is provided with pre-drilled holes is particularly advantageous for giving the container a tamper-proof character. Indeed, the first tearing of the upper part of the lid by means of the tongue will cause that of the materials constituting the pre-drilled holes, in this case the assembly aluminum / sealing film.
  • this embodiment allows to prohibit the contact between the container of the container and the adhesive applied to the underside of the reinforcing film provided with the tongue during storage. It is the same in case of reclosing the container, when the upper part of the lid is repositionable. Indeed, once the upper part of the cover repositioned on the lower part, the holes formed at the time of tearing, will be filled again by the material remained glued to the underside of the reinforcing film constituting the part top of the operculum.
  • the lower part of the lid (without tab) and comprising the sealing film and the upper part of the lid comprising the reinforcing film provided with a tongue are secured to one another. other by means of an adhesive so that the reinforcing film can partly be separated from the sealing film at the time of tearing by means of the tongue.
  • the coextruded film is a polymer-based film, generally synthetic, and judiciously chosen by those skilled in the art, so as to obtain the desired properties of differential bonding.
  • polymers are, for example, polymers or co-polymers based on acetate, acrylate, polyethylene, etc.
  • the upper part of the lid is repositionable on the lower part after partial tearing.
  • the part of the lid provided with the tongue is provided on its lower face, at the opposite of the zone at which the tongue is located, with an adhesive prohibiting the definitive separation of the upper and lower parts of the lid thus forming a hinge, the the remaining part of the lower face, in particular the periphery, being provided with a repositionable adhesive.
  • the adhesive located opposite the tongue acts as a hinge, the presence of repositionable adhesive at the periphery, to reposition the upper part of the lid on the lower part after use.
  • the repositionable adhesive can be applied over the entire lower surface of the upper part of the lid, with the exception of the "hinge".
  • the adhesive is chosen to allow the repositioning of the upper element on the lower element after partial separation of the two elements.
  • the person skilled in the art will know how to choose the appropriate composition.
  • the lower part of the lid is provided with perforations, whatever the nature of the adhesive, it is advantageously applied to the lower face of the upper element, to the non-perforated zones. perforations so as to avoid contact between the glue and the contents of the container.
  • the heat-sealing film is made of a material chosen from the group comprising polyethylene, polypropylene or polyester.
  • each of the other constituent layers of the cap are made integral with each other by means of conventional binders.
  • said lid may be manufactured in at least two distinct ways.
  • the reinforcing film may be assembled on the constituent reinforcing film of the upper part of the lid.
  • the preforms are then made in the thickness of the reinforcing film associated with the reinforcing film constituting the upper part of the cover and in the thickness of the aluminum assembly / heat-sealing film.
  • the lower part of the lid contains, in addition to the aluminum foil, a foam, as described above.
  • the preforms are made in the thickness of the complex.
  • a device of the sprinkler type is generally covered with a cap or a capsule.
  • the seal of the invention may be temporarily associated with a support to form a seal, preferably heat sealable.
  • the operculum will thus have several roles. One of them will be to confer inviolability of the container before the first opening. In addition, it will ensure primary sealing vis-à-vis the outside. Finally and above all, it will behave after tearing off the tongue and therefore partially from the upper element, like a sprinkler.
  • the support meanwhile, is intended to absorb the tolerances between the bottom of the capsule and / or the cap and the upper part of the neck of the container, and in addition, to ensure secondary sealing when the lid has been totally or partially removed. It is therefore likely to provide some compression with memory effect to precisely allow to absorb these tolerances.
  • the seal is inserted at the bottom of the capsule or cap. Once the container is filled, it comes to screw or clip the cap or the capsule with the seal on the container. The seal portion of the seal is then in contact with the rim. The sealing of the lid on the rim is then performed by induction heat sealing. This heat sealing is made possible by the combined action of a conductive material, inserted in the thickness of the seal, which, under the effect of an electric induction is heated, causing the softening of the sealing film on the rim.
  • the conductive material may be inserted either into the support or into the lid. Most often, it is inserted into the thickness of the lid.
  • the entire tongue surface is folded over the face of the cap in contact with the corresponding face of the support.
  • the support may be made of any type of compressible material with recovery memory, in particular expanded polyethylene or expanded polypropylene, optionally provided on at least one of its two faces, with a polypropylene film or polyethylene to give it a certain rigidity. It can also be made of cardboard. In practice, the supports envisaged have a thickness of between 0.5 and 4 mm, advantageously between 1 and 2 mm.
  • the temporary connection between the support and the cover this can be obtained by means of a temporary adhesive applied punctually to a multitude of points, for example microcrystalline wax or, advantageously by means of a movie extruded such as a polymer such as polyethylene.
  • the adhesive film may also be a coextruded film, each of which has a different sticking power on both sides, the most sticky face being applied to the lower surface of the support, for example, while the less tacky face is applied to the surface. upper face of the lid.
  • the coextruded film is a polymer-based film, generally synthetic, and judiciously chosen by those skilled in the art, so as to obtain the desired properties of differential bonding.
  • Such polymers are, for example, polymers or co-polymers based on acetate, acrylate, polyethylene, etc.
  • the adhesive must be chosen so that the assembly force between the support and the cover is lower than that of the heat-sealing layer on the rim.
  • the subject of the invention is also a method for manufacturing the heat-sealable seals described above.
  • the operculum of the invention has two essential elements respectively an upper element (2) and a lower element (3).
  • the upper element advantageously consists of two reinforcing films (4, 5) in the extension of which is a tab (6) tearing.
  • the lower element is characterized in that it is provided with pre-drilled holes (7) (see figure 2 ) arranged in all its thickness. It is constituted from top to bottom, a reinforcing film (8), a polyolefin foam (9), an aluminum foil (10), a second reinforcing film (11) and finally a sealing layer (12).
  • the upper and lower elements are assembled by means of an adhesive preventing the definitive separation of the upper and lower parts of the cover thus forming a hinge, the remaining part of the lower face, in particular the periphery, being provided with an adhesive repositionable.
  • the figure 4 schematically represents a dusting device according to the invention. It comprises a container (13) on the rim (14) of which is applied the lid (1). At the first use, the upper element (2) is torn off in part by gripping the tongue (6). Due to the presence of the preperforations (7), the constituent material of the lower part of the lid remains stuck on the underside of the reinforcing film. When the upper part (2) is repositioned on the lower part (3), the material returns to take its place, that is to say that the orifices left free after tearing are again rebouched.
  • FIG 3 there is shown an induction heat-sealable joint (15) associating a support (16) and the cover (1).
  • the support is made of expanded polypropylene or polyethylene and has a thickness of between 1.4 and 1.7 mm.
  • the tongue (6) is turned over and in contact with the underside of the support (16).
  • the support is associated with the lid by means of a temporary adhesive corresponding to an extruded film of the polyethylene type (17).
  • these seals are positioned as such at the bottom of the cap, the cap is then screwed or clipped, as appropriate, on the neck of the container. Heat sealing of the seal is done by induction.
  • the cover is first manufactured.
  • the tabs are precut in the two reinforcing films which are then returned to said film.
  • the reinforcement films are wound and then unwound onto the complex formed by the reinforcing film (8), the polyolefin foam (9), the aluminum foil (10), the second reinforcing film (11) and finally the sealing layer (12).
  • the films and the complex are associated by means of a coextruded film. We pre-drill holes in the complex until we reach the reinforcing film (4).
  • the support strips are produced in parallel.
  • the support is associated with the lid thus formed by means of a temporary adhesive.
  • the seal is cut in the thickness to the desired shape separately from the positioning of the tongue.

Claims (10)

  1. Verschlusselement (1) zum Verschließen eines Behälters, umfassend einen Versiegelungsfilm (12), der in seiner gesamten Dicke eine oder mehrere Perforationen und/oder eine oder mehrere Vorperforationen (7) aufweist und auf den mindestens ein Verstärkungsfilm (4) aufgelegt ist, der keine Perforationen und/oder Vorperforationen (7) aufweist und mit einer Verlängerung versehen ist, die eine Wegreißlasche (6) bildet, wobei der Versiegelungsfilm (12) und der Verstärkungsfilm (4) mittels eines Haftmittels derart miteinander verbunden sind, dass der Verstärkungsfilm (4) beim Wegreißen mittels der Lasche teilweise von dem Versiegelungsfilm (12) getrennt werden kann, dadurch gekennzeichnet, dass der mit der Lasche (6) versehene Teil des Verschlusselements auf seiner unteren Seite gegenüber dem Bereich, wo sich die Lasche befindet, mit einem Haftmittel versehen ist, das die endgültige Trennung des oberen Teils und des unteren Teils des Verschlusselements verhindert, wodurch ein Scharnier entsteht, wobei der restliche Abschnitt der unteren Seite, insbesondere der Umfang, mit einem repositionierbaren Haftmittel versehen ist.
  2. Verschlusselement nach Anspruch 1, dadurch gekennzeichnet, dass die Anzahl der Verstärkungsfilme zwei (4, 5) beträgt, wobei eventuell ein Aufdruck zwischen den beiden Filmen angebracht wird.
  3. Verschlusselement nach Anspruch 1, dadurch gekennzeichnet, dass es zwischen dem bzw. den Verstärkungsfilmen und dem Versiegelungsfilm eine Folie aus einem leitenden Material (10) aufweist.
  4. Verschlusselement nach Anspruch 3, dadurch gekennzeichnet, dass die Folie aus einem leitenden Material (10) selbst mit mindestens einem Verstärkungsfilm (8) überzogen ist, der eventuell von der genannten Folie durch einen Schaum (9) mit einer Dicke zwischen 0,4 und 4 mm getrennt ist.
  5. Verfahren für die Herstellung eines Verschlusselements nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass
    - Laschen in einem Verstärkungsfilm-Streifen vorgeschnitten werden,
    - die gesamte Laschenfläche mechanisch auf die obere Seite des Verstärkungsfilm-Streifens umgeklappt wird,
    - die untere Seite des Verstärkungsfilm-Streifens und die obere Seite des Versiegelungsfilm-Streifens anschließend durch unterschiedliche Klebung verbunden werden, um den Verschlusselement-Streifen zu bilden,
    - Vorperforationen in der Dicke des Versiegelungsfilm-Streifens erzeugt werden,
    - die Verschlusselemente in der gewünschten Form und passend in Bezug auf die Laschen in der gesamten Dicke des Verschlusselement-Streifens geschnitten werden.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass die untere Seite des Verstärkungsfilm-Streifens und die obere Seite einer Folie aus einem dielektrischen Material, die selbst auf die obere Seite des Versiegelungsfilms aufgelegt ist, verbunden werden.
  7. Dichtung mit einem Träger (16, 17), dazu bestimmt, auf den Boden einer Verschlusskappe positioniert zu werden, die mit dem Verschlusselement (1) nach einem der Ansprüche 1 bis 4 verbunden ist, wobei der Träger (16, 17) und das Verschlusselement (1) mittels eines temporären Haftmittels verbunden sind.
  8. Dichtung nach Anspruch 7, dadurch gekennzeichnet, dass die gesamte Fläche der Lasche (6) des Verschlusselements, die dazu bestimmt ist, mit der entsprechenden Seite des Trägers (16, 17) in Kontakt zu stehen, auf die obere Seite des Verschlusselements (1) umgeklappt ist.
  9. Verfahren für die Herstellung einer heißversiegelbaren Dichtung nach einem der Ansprüche 7 bis 8, dadurch gekennzeichnet, dass
    - ein Verschlusselement-Streifen gemäß dem Verfahren nach Anspruch 5 hergestellt wird,
    - gleichzeitig ein Trägerstreifen vorbereitet wird,
    - der Trägerstreifen anschließend temporär mit dem Verschlusselement-Streifen mittels eines temporären Haftmittels verbunden wird, um den Dichtungsstreifen zu bilden,
    - die Dichtungen in der gewünschten Form und passend in Bezug auf die Laschen in der gesamten Dicke des Dichtungsstreifens geschnitten werden.
  10. Vorrichtung mit einem Behälter mit einer Öffnung, an dessen Mündung (14) das Verschlusselement (1) nach einem der Ansprüche 1 bis 4 angeordnet ist.
EP20100305268 2009-03-18 2010-03-18 Verschlussfolie mit Grifflasche zum Verschliessen eines Behälters Active EP2230190B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0901258A FR2943321B1 (fr) 2009-03-18 2009-03-18 Opercule perfore muni d'une languette d'arrachage pour obturation d'un recipient

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Publication Number Publication Date
EP2230190A1 EP2230190A1 (de) 2010-09-22
EP2230190B1 true EP2230190B1 (de) 2014-08-27

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EP2230190A1 (de) 2010-09-22
FR2943321A1 (fr) 2010-09-24
FR2943321B1 (fr) 2013-12-27

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