EP1298068B1 - Bag closure device - Google Patents

Bag closure device Download PDF

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Publication number
EP1298068B1
EP1298068B1 EP02292341A EP02292341A EP1298068B1 EP 1298068 B1 EP1298068 B1 EP 1298068B1 EP 02292341 A EP02292341 A EP 02292341A EP 02292341 A EP02292341 A EP 02292341A EP 1298068 B1 EP1298068 B1 EP 1298068B1
Authority
EP
European Patent Office
Prior art keywords
bag
film
adhesive
fixing
repeatedly
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.)
Expired - Lifetime
Application number
EP02292341A
Other languages
German (de)
French (fr)
Other versions
EP1298068A3 (en
EP1298068A2 (en
Inventor
Jean-Paul Jegaden
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.)
Jpj International
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Jpj International
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Filing date
Publication date
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Publication of EP1298068A2 publication Critical patent/EP1298068A2/en
Publication of EP1298068A3 publication Critical patent/EP1298068A3/en
Application granted granted Critical
Publication of EP1298068B1 publication Critical patent/EP1298068B1/en
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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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/1691—End- or aperture-closing arrangements or devices using adhesive applied to attached closure elements
    • 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
    • B65D2313/00—Connecting or fastening means
    • B65D2313/08—Double sided adhesive tape, e.g. for suspension of the container

Definitions

  • the present invention relates to a device used to close packaging bags, and in particular those designed to withstand large loads of up to 20kg or more, generally used for packaging animal feed, flour, sugar, fertilizers, etc., generally made of reinforced paper, of resistant plastic material or the like, hereinafter referred to as industrial bags.
  • the industrial bag closing devices currently used do not allow the user to close the bag after opening it a first time.
  • Velcro fasteners are expensive, which explains their use only on certain special bags, and, moreover, they hide part of the bag, which forces the printer of the bag to have a presentation (including the safety regulatory presentation relating to the product (s) contained in the bag) modified to take account of the future location of the closing device, different from the presentation for the same bags intended not to be equipped with safety devices. closing closures.
  • the zipper devices are certainly more discreet than bags with a self-gripping closure, but they are unreliable, especially when the bags contain loads greater than 5kg. In addition, they must be incorporated as soon as the bag is made. Finally, these zipper devices also encroach on the width of the bag.
  • EP-A-0 827 912 discloses a heavy load carrying bag having an opening which can be closed by a reclosable double fold system by employing a film having a first side carrying an adhesive which repeatedly secures the film to the bag. and whose second face carries an adhesive that permanently secures the film to the bag.
  • the problem is to realize, for industrial bags, a closure device that allows the user to close several times a bag safely after opening, even if it has a heavy load, and that allows to have a reclosable opening whose size corresponds to the cross section of the bag.
  • the solution of the present invention is a bag having an opening and a closure device composed of at least one film, a first face of which is provided with an adhesive capable of permanently securing the film to a first portion of the bag located on a first surface of the bag, and whose second face is provided with an adhesive capable of separating and securing the film to a second portion of the bag located on the surface opposite the first surface relative to the opening so as to close the opening.
  • the bag is capable of containing a load of at least 2 kg and the adhesive solidarisant the film to the bag repeatedly to an adhesive power of between 2 and 2.5 N / cm according to the AFERA 4001 standard, and in that one of the two parts of the bag cooperating with the film is located in the immediate vicinity of the opening, the other part being comprised in a section delimited by a distant line of folding and a boundary line respectively remote from the end of the two surfaces close to the opening by a distance equal to twice and three times the width of a strip of the double fold allowing the user to be able to secure the bag to the film by folding twice on itself the end of both surfaces.
  • the opening of a bag provided with such a closure device can be easily closed safely and repeatedly.
  • the bag can be made without the closure device that can be added regardless of bag making.
  • the fact of using a double-sided adhesive film, without any particular mechanism makes it possible to have a maximum opening which is equal to the cross-section of the bag.
  • the devices consist of an opaque label which requires to provide as soon as the manufacture of the bag the location of this label for no registration is printed at this location.
  • the film and the two adhesives are transparent, which makes it possible not to modify the external presentation of the bag, the information of which can remain at the initial place.
  • a bag 1 has two surfaces 2, 3 connected on the one hand laterally by lateral surfaces 4, 5, and on the other hand, by a bottom 6.
  • the end 20 of the surfaces 2, 3 opposite the bottom 6 defines an opening 7.
  • the bag 1 also comprises a closure device 8 disposed near the opening 7.
  • the closure device 8 is a film 9, a first face of which comprises an adhesive 10 able to permanently bond this film 9 to a first portion of the bag 1 located on one of the two surfaces 2, 3.
  • another side of the film 9 comprises an adhesive 11 capable of repeatedly securing and detaching the film 9 to a second portion of the bag 1 located on the other of the two surfaces 3, 2.
  • this arrangement of the film 9 makes it possible to have an opening 7 equal to the cross section of the bag 1.
  • one 13 of the two parts 12, 13 of the bag cooperating with the film 9 is located in the immediate vicinity of the opening 7, the other part 12 being situated at a predetermined distance away of this opening 7.
  • the film 9 is permanently secured by the adhesive 10 to the part 12 remote from the opening 7 so that the user, by folding twice on the even the end 20 of the two surfaces 2, 3 and exerting pressure on the double fold against the adhesive 11, secures the film 9 and the portion 13 close to the opening 7.
  • the distance between the end 20 and the near line 14 of folding corresponds to the width 21 of the double fold band.
  • This width 21 also corresponds to the distance between the near line 14 and the folded line 15 and to that between the folding line 15 and the limit line 16.
  • the portion 12 remote from the opening 7 is the section between the folded line 15 (away from the end 20 by a distance equal to twice the width 21 of the double fold tape) and the limit line 16. (away from the end 20 by a distance equal to three times the width 21 of the double fold band).
  • the film 9 must be positioned in this part 12 remote from the opening 7 to have optimum efficiency.
  • the portion 12 remote from the opening cooperates with the adhesive 11 to be able to repeatedly secure and detach the film 9 to the bag 1.
  • the pressure due to the load contained in the bag 1 is transmitted to the section between the near line 14 and the fold-away line (outer band of the double fold). .
  • the pressure is transmitted very little to the section between the end 20 and the close fold line 14 (inner band of the double fold) which contains the part 13 close to the opening 7.
  • the pressure exerted on the Adhesive 11 for repeatedly securing and separating the film 9 to the bag 1 remains weak, although the load in the bag 1 is important.
  • the use of the double fold allows to have a perfect seal when the bag 1 is closed.
  • the film 9 and the two adhesives 10, 11 are transparent and, as a result, it is possible to apply the closure device 8 to inscriptions, which makes it possible not to modify the external presentation of the bag 1.
  • the size of the film 9 can easily be determined by those skilled in the art.
  • the film may have a length of between two-thirds and three-quarters of the width 22 of a surface 2,3 of the bag 1, depending on the load contained.
  • the film 9 may be polyester.
  • the adhesive 10 capable of securing the film 9 to the bag 1 in a definitive manner may be based on acrylic. It may be the same for the adhesive 11 able to secure and detach the film 9 to the bag 1 repeatedly.
  • the double-sided pressure-sensitive adhesive tapes marketed by SCAPATAPES under the reference DUBLFILM D230 and D151 can be used as closure device 8 according to the invention.
  • the bag 1 is made of a material having a very low porosity and not delaminating, for example polyester, polypropylene, polyethylene ... It would obviously be possible to use a bag 1 based on paper or other whose adapted faces to cooperate with the adhesives (10, 11), or at least with the adhesive capable of securing and detaching the film 9 to the bag 1 repeatedly, are covered with a film made of a material having a very low porosity and not not delaminating.
  • a first series was produced according to the AFERA 4001 standard which defines a method for measuring the adhesive performance of an adhesive.
  • the adhesive 10 capable of securing the film 9 to the bag 1 in a definitive manner has an adhesive power of at least 7.5 N / cm and that 11 capable of securing and separating the film 9 to the bag 1 repeatedly has an adhesive power. between 2 and 2.5N / cm.
  • a second series was carried out according to this same standard, but using a paper backing covered with a polyester film (paper used for the manufacture of bags) instead of the stainless steel support required by the standard.
  • the adhesive 10 capable of securing the film 9 to the bag 1 permanently has an adhesive power greater than the tear resistance of the paper.
  • That 11 capable of joining and detaching the film 9 to the bag 1 repeatedly has an adhesive power of between 1 and 2.5 N / cm depending on the type of paper used.
  • a third series was produced according to this same standard, but using coated paper supports 80.
  • the adhesive 10 capable of securing the film 9 to the bag 1 permanently has an adhesive power greater than the tear resistance of the paper.
  • the one 11 adapted to fasten and dissociate the film 9 to the bag 1 repeatedly has an adhesive power of between 0.4 and 1.5N / cm depending on the type of support used.
  • Adhesive 10 able to join the film 9 to the bag 1 permanently has an adhesive power greater than the tear resistance of the paper.
  • the one 11 adapted to fasten and dissociate the film 9 to the bag 1 repeatedly has adhesive power between 4.5 and 6.5N / cm depending on the type of media used.
  • the adhesive thus makes it possible to securely close a bag containing large loads of the order of 10 or 15 kg, which can even be up to 20 kg, even 25 kg, and this after more than thirty or even forty, openings and closures for a bag whose faces adapted to cooperate with the adhesives consist of a film made of a very low porosity material (polyester film, polypropylene, polyethylene, etc.), this bag may be paper-based , aluminum or plastic.
  • the closure device according to the present invention thus makes it possible to close extremely reliably and repeatedly industrial bags, it also allows to print information on the bag without worrying about the location of this closure device. Finally, the manufacture of a bag provided with such a device provides the user with a maximum opening corresponding to the cross section of the bag.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Fodder In General (AREA)
  • Seeds, Soups, And Other Foods (AREA)

Abstract

The closure, e.g. for reinforced paper or plastic industrial bags, consists of a film strip (9) with an adhesive coating (10) on one side to fasten it permanently to a first part (12) the bag, and a different adhesive coating (11) on the other side to attach it to a second part (13) of the bag, allowing it to be opened and closed at least ten times. The first part (12) of the bag is located at a distance from its open end (7), while the second part is on a folded edge (20).

Description

La présente invention concerne un dispositif utilisé pour fermer des sacs d'emballage, et notamment ceux prévus pour supporter des charges importantes pouvant aller jusqu'à 20kg, voire plus, généralement utilisés pour emballer des aliments pour animaux, de la farine, du sucre, des engrais, etc..., en général constitués en papier renforcé, de matériau plastique résistant ou autre, ci-après dénommés sacs industriels.The present invention relates to a device used to close packaging bags, and in particular those designed to withstand large loads of up to 20kg or more, generally used for packaging animal feed, flour, sugar, fertilizers, etc., generally made of reinforced paper, of resistant plastic material or the like, hereinafter referred to as industrial bags.

Pour la plus part d'entre eux, les dispositifs de fermeture des sacs industriels utilisés actuellement ne permettent pas à l'utilisateur de refermer le sac après l'avoir ouvert une première fois.For most of them, the industrial bag closing devices currently used do not allow the user to close the bag after opening it a first time.

Toutefois, parmi les dispositifs de fermeture de sac industriels permettant une refermeture du sac, il existe d'une part les dispositifs de fermeture auto-agrippant du type Velcro, et, d'autre part les dispositifs de fermeture du type fermeture à glissière.However, among the industrial bag closing devices for reclosing the bag, there are on the one hand Velcro type hook-and-loop fasteners, and on the other hand closure devices of the zipper type.

Les dispositifs de fermeture auto-agrippant sont chers, ce qui explique leur utilisation uniquement sur certains sacs spéciaux, et, de plus, ils cachent une partie du sac, ce qui oblige l'imprimeur du sac d'avoir une présentation (y compris la présentation réglementaire de sécurité relative au(x) produit(s) contenu(s) dans le sac) modifiée pour tenir compte du futur emplacement du dispositif de fermeture, différente de la présentation pour les même sacs destinés à ne pas être munis de dispositifs de fermeture refermables.Velcro fasteners are expensive, which explains their use only on certain special bags, and, moreover, they hide part of the bag, which forces the printer of the bag to have a presentation (including the safety regulatory presentation relating to the product (s) contained in the bag) modified to take account of the future location of the closing device, different from the presentation for the same bags intended not to be equipped with safety devices. closing closures.

De plus, ces dispositifs empiètent sur la largeur du sac. En conséquence, l'ouverture n'atteint pas sa dimension optimale qui correspond à toute la circonférence du sac.In addition, these devices encroach on the width of the bag. As a result, the opening does not reach its optimum size which corresponds to the entire circumference of the bag.

Les dispositifs de fermeture à glissière sont certes plus discrets que les sacs munis d'un dispositif de fermeture auto agrippant, mais ils ne sont pas fiables, surtout lorsque les sacs contiennent des charges supérieures à 5kg. De plus, ils doivent être incorporés dès la fabrication du sac. Enfin, ces dispositifs de fermeture à glissière empiètent eux aussi sur la largeur du sac.The zipper devices are certainly more discreet than bags with a self-gripping closure, but they are unreliable, especially when the bags contain loads greater than 5kg. In addition, they must be incorporated as soon as the bag is made. Finally, these zipper devices also encroach on the width of the bag.

Il existe pour des sacs supportant des charges faibles, c'est à dire au maximum 1kg, des dispositifs de fermeture à base d'adhésif permettant la refermeture du sac après son ouverture. Cependant, les adhésifs actuellement utilisés ne permettent pas de nombreuses opérations de fermeture et réouverture : le système adhésif n'assure plus la fermeture après quelques manoeuvres, même si aucun effort n'est exercé sur celui-ci. A plus forte raison, ces adhésifs ne permettent pas d'appliquer de tels dispositifs à des sacs industriels : la pression exercée par le contenu est beaucoup trop élevé pour que la refermeture du sac se fasse de manière sûre, notamment après plusieurs opération de fermeture et de réouverture.There is for bags carrying low loads, that is to say at most 1kg, closure devices based on adhesive to reclose the bag after opening. However, the adhesives currently used do not allow many operations of closing and reopening: the adhesive system no longer ensures closure after a few maneuvers, even if no effort is exerted on it. All the more reason, these adhesives do not make it possible to apply such devices to industrial bags: the pressure exerted by the contents is much too high for the reclosing of the bag to be done in a safe manner, in particular after several closing operations and reopening.

Le document EP-A-0 827 912 décrit un sac supportant des charges importantes possédant une ouverture qui peut être fermée par un système de double pli refermable en employant un film dont une première face porte un adhésif qui solidarise le film au sac de façon répétée et dont la deuxième face porte un adhésif qui solidarise le film au sac de façon permanente.EP-A-0 827 912 discloses a heavy load carrying bag having an opening which can be closed by a reclosable double fold system by employing a film having a first side carrying an adhesive which repeatedly secures the film to the bag. and whose second face carries an adhesive that permanently secures the film to the bag.

Le problème posé est de réaliser, pour des sacs industriels, un dispositif de fermeture qui permet à l'utilisateur de refermer plusieurs fois un sac de façon sûre après l'avoir ouvert, même s'il comporte une charge assez lourde, et qui permet d'avoir une ouverture refermable dont la dimension correspond à la section transversale du sac.The problem is to realize, for industrial bags, a closure device that allows the user to close several times a bag safely after opening, even if it has a heavy load, and that allows to have a reclosable opening whose size corresponds to the cross section of the bag.

La solution de la présente invention est un sac possédant une ouverture et un dispositif de fermeture composé d'au moins un film dont une première face est munie d'un adhésif apte à solidariser définitivement le film à une première partie du sac située sur une première surface du sac, et dont la deuxième face est munie d'un adhésif apte à désolidariser et solidariser le film à une deuxième partie du sac située sur la surface opposée à la première surface par rapport à l'ouverture de façon à fermer l'ouverture. Selon l'invention, le sac est apte à contenir une charge d'au moins 2kg et l'adhésif solidarisant le film au sac de façon répétée à un pouvoir adhésif compris entre 2 et 2,5 N/cm selon la norme AFERA 4001, et en ce qu'une des deux parties du sac coopérant avec le film est située à proximité immédiate de l'ouverture, l'autre partie étant comprise dans une section délimitée par une ligne éloignée de pliage et une ligne limite respectivement éloignées de l'extrémité des deux surfaces proche de l'ouverture d'une distance égale à deux fois et à trois fois la largeur d'une bande du double repli permettant à l'utilisateur de pouvoir solidariser le sac au film en pliant deux fois sur elle-même l'extrémité des deux surfaces.The solution of the present invention is a bag having an opening and a closure device composed of at least one film, a first face of which is provided with an adhesive capable of permanently securing the film to a first portion of the bag located on a first surface of the bag, and whose second face is provided with an adhesive capable of separating and securing the film to a second portion of the bag located on the surface opposite the first surface relative to the opening so as to close the opening. According to the invention, the bag is capable of containing a load of at least 2 kg and the adhesive solidarisant the film to the bag repeatedly to an adhesive power of between 2 and 2.5 N / cm according to the AFERA 4001 standard, and in that one of the two parts of the bag cooperating with the film is located in the immediate vicinity of the opening, the other part being comprised in a section delimited by a distant line of folding and a boundary line respectively remote from the end of the two surfaces close to the opening by a distance equal to twice and three times the width of a strip of the double fold allowing the user to be able to secure the bag to the film by folding twice on itself the end of both surfaces.

Différents modes de réalisation du sac sont définis par les revendications dépendantes 2 à 12.Different embodiments of the bag are defined by dependent claims 2 to 12.

L'ouverture d'un sac muni d'un tel dispositif de fermeture peut être facilement refermée de façon sûre et répétée. Le sac peut être fabriqué sans le dispositif de fermeture qui peut être ajouté indépendamment de la fabrication du sac. Enfin, le fait d'utiliser un film adhésif double-face, sans aucun mécanisme particulier permet d'avoir une ouverture maximale qui est égale à la section transversale du sac.The opening of a bag provided with such a closure device can be easily closed safely and repeatedly. The bag can be made without the closure device that can be added regardless of bag making. Finally, the fact of using a double-sided adhesive film, without any particular mechanism makes it possible to have a maximum opening which is equal to the cross-section of the bag.

De plus, dans l'art antérieur, les dispositifs sont constitués d'une étiquette opaque qui nécessite de prévoir dès la fabrication du sac l'emplacement de cette étiquette pour qu'aucune inscription soit imprimée à cet emplacement. Selon un mode particulier, le film et les deux adhésifs sont transparents ce qui permet de ne pas modifier la présentation externe du sac dont les informations peuvent demeurer à l'endroit initial.In addition, in the prior art, the devices consist of an opaque label which requires to provide as soon as the manufacture of the bag the location of this label for no registration is printed at this location. According to one particular mode, the film and the two adhesives are transparent, which makes it possible not to modify the external presentation of the bag, the information of which can remain at the initial place.

D'autres particularités de l'invention résulteront de la description qui va suivre. Aux dessins annexés, donnés à titre d'exemple non limitatif :

  • la figure 1 est une vue en perspective d'un sac ouvert muni d'un dispositif de fermeture selon un mode de réalisation de la présente invention; et
  • la figure 2 est une vue en coupe d'un sac fermé muni d'un dispositif de fermeture selon un mode de réalisation de la présente invention.
Other features of the invention will result from the description which follows. In the accompanying drawings, given by way of non-limiting example:
  • Figure 1 is a perspective view of an open bag provided with a closure device according to an embodiment of the present invention; and
  • Figure 2 is a sectional view of a closed bag provided with a closure device according to an embodiment of the present invention.

Comme on peut le voir à la figure 1, un sac 1 possède deux surfaces 2, 3 reliées d'une part latéralement par des surfaces latérales 4, 5, et d'autre part, par un fond 6. L'extrémité 20 des surfaces 2, 3 opposée au fond 6 définit une ouverture 7.As can be seen in Figure 1, a bag 1 has two surfaces 2, 3 connected on the one hand laterally by lateral surfaces 4, 5, and on the other hand, by a bottom 6. The end 20 of the surfaces 2, 3 opposite the bottom 6 defines an opening 7.

Le sac 1 comporte aussi un dispositif de fermeture 8 disposé à proximité de l'ouverture 7.The bag 1 also comprises a closure device 8 disposed near the opening 7.

Selon l'invention, le dispositif de fermeture 8 est un film 9 dont une première face comporte un adhésif 10 apte à solidariser ce film 9 de façon permanente à une première partie du sac 1 située sur une des deux surfaces 2, 3. L'autre face du film 9 comporte un adhésif 11 apte à solidariser et désolidariser de façon répétée le film 9 à une deuxième partie du sac 1 située sur l'autre des deux surfaces 3, 2.According to the invention, the closure device 8 is a film 9, a first face of which comprises an adhesive 10 able to permanently bond this film 9 to a first portion of the bag 1 located on one of the two surfaces 2, 3. another side of the film 9 comprises an adhesive 11 capable of repeatedly securing and detaching the film 9 to a second portion of the bag 1 located on the other of the two surfaces 3, 2.

Comme on peut particulièrement bien le voir à la figure 1, cet agencement du film 9 permet d'avoir une ouverture 7 égale à la section transversale du sac 1.As can be seen particularly in FIG. 1, this arrangement of the film 9 makes it possible to have an opening 7 equal to the cross section of the bag 1.

Selon un mode de réalisation de la présente invention, l'une 13 des deux parties 12,13 du sac coopérant avec le film 9 est située à proximité immédiate de l'ouverture 7, l'autre partie 12 étant située à une distance prédéterminée éloignée de cette ouverture 7.According to one embodiment of the present invention, one 13 of the two parts 12, 13 of the bag cooperating with the film 9 is located in the immediate vicinity of the opening 7, the other part 12 being situated at a predetermined distance away of this opening 7.

Dans l'exemple illustré par les figures 1 et 2, le film 9 est solidarisé de façon permanente par l'adhésif 10 à la partie 12 éloignée de l'ouverture 7 de telle sorte que l'utilisateur, en pliant deux fois sur elle-même l'extrémité 20 des deux surfaces 2, 3 et en exerçant une pression sur le double repli contre l'adhésif 11, solidarise le film 9 et la partie 13 proche de l'ouverture 7.In the example illustrated by FIGS. 1 and 2, the film 9 is permanently secured by the adhesive 10 to the part 12 remote from the opening 7 so that the user, by folding twice on the even the end 20 of the two surfaces 2, 3 and exerting pressure on the double fold against the adhesive 11, secures the film 9 and the portion 13 close to the opening 7.

Comme on peut le voir aux figures 1 et 2, la distance entre l'extrémité 20 et la ligne proche 14 de pliage correspond à la largeur 21 de la bande du double repli. Cette largeur 21 correspond aussi à la distance entre la ligne proche 14 et la ligne éloignée 15 de pliage et à celle entre la ligne éloignée 15 de pliage et la ligne limite 16.As can be seen in FIGS. 1 and 2, the distance between the end 20 and the near line 14 of folding corresponds to the width 21 of the double fold band. This width 21 also corresponds to the distance between the near line 14 and the folded line 15 and to that between the folding line 15 and the limit line 16.

La partie 12 éloignée de l'ouverture 7 est la section comprise entre la ligne éloignée 15 de pliage (éloignée de l'extrémité 20 d'une distance égale à deux fois la largeur 21 de la bande de double repli) et la ligne limite 16 (éloignée de l'extrémité 20 d'une distance égale à trois fois la largeur 21 de la bande de double repli).The portion 12 remote from the opening 7 is the section between the folded line 15 (away from the end 20 by a distance equal to twice the width 21 of the double fold tape) and the limit line 16. (away from the end 20 by a distance equal to three times the width 21 of the double fold band).

Le film 9 doit être positionné dans cette partie 12 éloignée de l'ouverture 7 pour avoir une efficacité optimum.The film 9 must be positioned in this part 12 remote from the opening 7 to have optimum efficiency.

Bien que non illustré, il est possible de solidariser le film 9 à la partie 13 proche de l'ouverture 7. En conséquence, la partie 12 éloignée de l'ouverture (située entre la ligne éloignée 15 de pliage et la ligne limite 16) coopère avec l'adhésif 11 pour pouvoir solidariser et désolidariser de façon répétée le film 9 au sac 1.Although not illustrated, it is possible to secure the film 9 to the portion 13 near the opening 7. As a result, the portion 12 remote from the opening (located between the folded line 15 and the limit line 16) cooperates with the adhesive 11 to be able to repeatedly secure and detach the film 9 to the bag 1.

En utilisant le système de double repli conformément au premier mode de réalisation, la pression due à la charge contenue dans le sac 1 est transmise à la section comprise entre la ligne proche 14 et la ligne éloignée 15 de pliage (bande externe du double repli). La pression est très peu transmise à la section comprise entre l'extrémité 20 et la ligne proche 14 de pliage (bande interne du double repli) qui contient la partie 13 proche de l'ouverture 7. De ce fait la pression exercée sur l'adhésif 11 permettant de solidariser et désolidariser de façon répétée le film 9 au sac 1 reste faible, bien que la charge dans le sac 1 est importante.Using the double-fold system according to the first embodiment, the pressure due to the load contained in the bag 1 is transmitted to the section between the near line 14 and the fold-away line (outer band of the double fold). . The pressure is transmitted very little to the section between the end 20 and the close fold line 14 (inner band of the double fold) which contains the part 13 close to the opening 7. As a result, the pressure exerted on the Adhesive 11 for repeatedly securing and separating the film 9 to the bag 1 remains weak, although the load in the bag 1 is important.

L'utilisation du double repli permet d'avoir une étanchéité parfaite quand le sac 1 est fermé.The use of the double fold allows to have a perfect seal when the bag 1 is closed.

Le film 9 et les deux adhésifs 10,11 sont transparents et, de ce fait, il est possible d'appliquer le dispositif de fermeture 8 sur des inscriptions, ce qui permet de ne pas modifier la présentation externe du sac 1.The film 9 and the two adhesives 10, 11 are transparent and, as a result, it is possible to apply the closure device 8 to inscriptions, which makes it possible not to modify the external presentation of the bag 1.

La dimension du film 9 peut-être facilement déterminée par l'homme du métier. Pour une largeur de 25mm, le film peut avoir une longueur comprise entre les deux tiers et les trois quarts de la largeur 22 d'une surface 2,3 du sac 1, selon la charge contenue.The size of the film 9 can easily be determined by those skilled in the art. For a width of 25 mm, the film may have a length of between two-thirds and three-quarters of the width 22 of a surface 2,3 of the bag 1, depending on the load contained.

Le film 9 peut être en polyester.The film 9 may be polyester.

L'adhésif 10 apte à solidariser le film 9 au sac 1 de façon définitive peut être à base acrylique. Il peut en être de même de l'adhésif 11 apte à solidariser et désolidariser le film 9 au sac 1 de façon répétée.The adhesive 10 capable of securing the film 9 to the bag 1 in a definitive manner may be based on acrylic. It may be the same for the adhesive 11 able to secure and detach the film 9 to the bag 1 repeatedly.

Les rubans adhésifs doubles faces sensibles à la pression commercialisés par la société SCAPATAPES sous la référence DUBLFILM D230 et D151 peuvent être utilisés comme dispositif de fermeture 8 selon l'invention.The double-sided pressure-sensitive adhesive tapes marketed by SCAPATAPES under the reference DUBLFILM D230 and D151 can be used as closure device 8 according to the invention.

Le sac 1 est réalisé en un matériau ayant une très faible porosité et ne se délaminant pas, par exemple en polyester, polypropylène, polyéthylène... Il serait évidemment possible d'utiliser un sac 1 à base de papier ou autre dont les faces adaptées à coopérer avec les adhésifs (10, 11), ou au moins avec l'adhésif apte à solidariser et désolidariser le film 9 au sac 1 de façon répétée, sont recouvertes d'un film fait en une matière ayant une très faible porosité et ne se délaminant pas.The bag 1 is made of a material having a very low porosity and not delaminating, for example polyester, polypropylene, polyethylene ... It would obviously be possible to use a bag 1 based on paper or other whose adapted faces to cooperate with the adhesives (10, 11), or at least with the adhesive capable of securing and detaching the film 9 to the bag 1 repeatedly, are covered with a film made of a material having a very low porosity and not not delaminating.

Plusieurs séries de tests d'adhérence ont été réalisés sur ces adhésifs.Several series of adhesion tests were performed on these adhesives.

Une première série a été réalisée selon la norme AFERA 4001 qui définit une méthode de mesure des performances adhésives d'un adhésif. L'adhésif 10 apte à solidariser le film 9 au sac 1 de façon définitive a un pouvoir adhésif d'au moins 7,5N/cm et celui 11 apte à solidariser et désolidariser le film 9 au sac 1 de façon répétée a un pouvoir adhésif compris entre 2 et 2,5N/cm.A first series was produced according to the AFERA 4001 standard which defines a method for measuring the adhesive performance of an adhesive. The adhesive 10 capable of securing the film 9 to the bag 1 in a definitive manner has an adhesive power of at least 7.5 N / cm and that 11 capable of securing and separating the film 9 to the bag 1 repeatedly has an adhesive power. between 2 and 2.5N / cm.

Une deuxième série a été réalisée selon cette même norme, mais en utilisant un support en papier recouvert d'un film polyester (papier utilisé pour la fabrication des sacs) au lieu du support en acier inoxydable requis par la norme. L'adhésif 10 apte à solidariser le film 9 au sac 1 de façon définitive a un pouvoir adhésif supérieur à la résistance au déchirement du papier. Celui 11 apte à solidariser et désolidariser le film 9 au sac 1 de façon répétée a un pouvoir adhésif compris entre 1 et 2,5N/cm selon le type de papier utilisé.A second series was carried out according to this same standard, but using a paper backing covered with a polyester film (paper used for the manufacture of bags) instead of the stainless steel support required by the standard. The adhesive 10 capable of securing the film 9 to the bag 1 permanently has an adhesive power greater than the tear resistance of the paper. That 11 capable of joining and detaching the film 9 to the bag 1 repeatedly has an adhesive power of between 1 and 2.5 N / cm depending on the type of paper used.

Une troisième série a été réalisée selon cette même norme, mais en utilisant des supports en papier couché 80. L'adhésif 10 apte à solidariser le film 9 au sac 1 de façon définitive a un pouvoir adhésif supérieur à la résistance au déchirement du papier. Celui 11 apte à solidariser et désolidariser le film 9 au sac 1 de façon répétée a un pouvoir adhésif compris entre 0,4 et 1,5N/cm selon le type de support utilisé.A third series was produced according to this same standard, but using coated paper supports 80. The adhesive 10 capable of securing the film 9 to the bag 1 permanently has an adhesive power greater than the tear resistance of the paper. The one 11 adapted to fasten and dissociate the film 9 to the bag 1 repeatedly has an adhesive power of between 0.4 and 1.5N / cm depending on the type of support used.

Enfin, une quatrième série a été réalisée dans les mêmes conditions que la troisième série, mais après un vieillissement de 6 jours à 80°C suivi d'un repos de 4 heures à 23 C. L'adhésif 10 apte à solidariser le film 9 au sac 1 de façon définitive a un pouvoir adhésif supérieur à la résistance au déchirement du papier. Celui 11 apte à solidariser et désolidariser le film 9 au sac 1 de façon répétée a un pouvoir adhésif compris entre 4,5 et 6,5N/cm selon le type de support utilisé.Finally, a fourth series was carried out under the same conditions as the third series, but after aging for 6 days at 80 ° C. followed by a rest of 4 hours at 23 ° C. Adhesive 10 able to join the film 9 to the bag 1 permanently has an adhesive power greater than the tear resistance of the paper. The one 11 adapted to fasten and dissociate the film 9 to the bag 1 repeatedly has adhesive power between 4.5 and 6.5N / cm depending on the type of media used.

Dans toutes ces séries de test, il n'y a aucun arrachement du papier lors du test sur l'adhésif 11 apte à solidariser et désolidariser le film 9 au sac 1 de façon répétée.In all these series of tests, there is no tearing of the paper during the test on the adhesive 11 able to secure and dissociate the film 9 to the bag 1 repeatedly.

Ces tests montrent la qualité de l'adhérence de l'adhésif 10 apte à solidariser le film 9 au sac 1 de façon définitive qui est plus importante que la résistance de la matière utilisée pour fabriquer le sac. Ils montrent aussi que l'adhésif 11 apte à solidariser et désolidariser le film 9 au sac 1 de façon répétée a un pouvoir adhésif très important (test après vieillissement) tout en n'abîmant pas le support (aucune trace d'arrachage du support).These tests show the quality of the adhesion of the adhesive 10 capable of securing the film 9 to the bag 1 permanently which is more important than the strength of the material used to manufacture the bag. They also show that the adhesive 11 capable of securing and separating the film 9 to the bag 1 repeatedly has a very high adhesive power (test after aging) while not damaging the support (no trace of tearing of the support) .

L'adhésif permet donc de fermer de façon sûre un sac contenant des charges importantes de l'ordre de 10 ou 15 kg, pouvant même aller jusqu'à 20kg, voire 25kg, et ceci après plus d'une trentaine, voire une quarantaine, d'ouvertures et fermetures pour un sac dont les faces adaptées à coopérer avec les adhésifs sont constituées d'un film fait d'une matière à très faible porosité (film polyester, polypropylène, polyéthylène, etc), ce sac pouvant être à base papier, aluminium ou plastique.The adhesive thus makes it possible to securely close a bag containing large loads of the order of 10 or 15 kg, which can even be up to 20 kg, even 25 kg, and this after more than thirty or even forty, openings and closures for a bag whose faces adapted to cooperate with the adhesives consist of a film made of a very low porosity material (polyester film, polypropylene, polyethylene, etc.), this bag may be paper-based , aluminum or plastic.

Le dispositif de fermeture selon la présente invention permet donc de refermer de façon extrêmement fiable et répétée des sacs industriels, il permet aussi d'imprimer des informations sur le sac sans se soucier de l'emplacement de ce dispositif de fermeture. Enfin, la fabrication d'un sac muni d'un tel dispositif permet d'offrir à l'utilisateur une ouverture maximale correspondant à la section transversale du sac.The closure device according to the present invention thus makes it possible to close extremely reliably and repeatedly industrial bags, it also allows to print information on the bag without worrying about the location of this closure device. Finally, the manufacture of a bag provided with such a device provides the user with a maximum opening corresponding to the cross section of the bag.

Claims (12)

  1. Bag (1) having an opening (7) and a closure device (8) composed of at least one film (9), a first face of which is provided with an adhesive (10) able to definitively fix the film (9) to a first part (12, 13; 18, 19) of the bag (1) situated on a first surface (2, 3) of the bag (1) and the second face of which is provided with an adhesive (11) able to disconnect and connect the film (9) to a second part (13, 12; 19, 18) of the bag (1) situated on the surface (3, 2) opposite to the first surface (2, 3) with respect to the opening (7) so as to close this opening (7), the bag (1) being able to contain a load of at least 2 kg, characterised in that the adhesive (11) fixing the film (9) to the bag (1) repeatedly has an adhesion of between 2 and 2.5 N/cm according to AFERA 4001, and in that one (13) of the two parts (12, 13) of the bag (1) cooperating with the film (9) is situated in the immediate vicinity of the opening (7), the other part (12) being included in a section delimited by a distant folding line (15) and a limit line (16) respectively distant from the end (20) of the two surfaces (2, 3) close to the opening (7) by a distance equal to twice and three times the width (21) of a double-fold band, enabling the user to fix the bag (1) to the film (9) by folding the end (20) of the two surfaces (2, 3) twice on itself.
  2. Bag (1) according to claim 1, characterised in that the adhesive (10) fixing the film (9) to the bag (1) definitively has an adhesion of at least 7.5 N/cm according to AFERA 4001.
  3. Bag (1) according to claim 1 or 2, characterised in that the adhesive (10) fixing the film (9) to the bag (1) definitively has an adhesion greater than the resistance to tearing of the material constituting the bag (1).
  4. Bag (1) according to one of claims 1 to 3, characterised in that the adhesive (11) fixing the film (9) to the bag (1) repeatedly has an adhesion of between 0.4 and 2.5 N/cm according to AFERA 4001, the steel support required by this standard being replaced by the material constituting the bag (1).
  5. Bag (1) according to one of claims 1 to 4, characterised in that the adhesive (11) fixing the film (9) to the bag (1) repeatedly has an adhesion of between 1 and 2.5 N/cm according to AFERA 4001, the steel support required by this standard being replaced by a paper covered with a polyester film.
  6. Bag (1) according to one of claims 1 to 5, characterised in that the adhesive (11) fixing the film (9) to the bag (1) repeatedly has an adhesion of between 4.5 and 6.5 N/cm according to AFERA 4001, the steel support required by this standard being replaced by an 80 coated paper and the test having been carried out after an ageing of six days at 80°C followed by a four hour rest at 23°C.
  7. Bag (1) according to one of claims 1 to 6, characterised in that the material of the bag (1) adapted to cooperate with the adhesive (11) fixing the film (9) to the bag (1) repeatedly is a material with very low porosity and not delaminating, for example a film made from polyester, polypropylene or polyethylene.
  8. Bag (1) according to one of claims 1 to 6, characterised in that the film (9) is a polyester.
  9. Bag (1) according to one of claims 1 to 8, characterised in that the adhesive (10) fixing the film (9) to the bag (1) definitively is an adhesive based on acrylic.
  10. Bag (1) according to one of claims 1 to 9, characterised in that the adhesive (11) fixing the film (9) to the bag (1) repeatedly is an adhesive based on acrylic.
  11. Bag (1) according to one of claims 1 to 10, characterised in that the closure device (8) is fixed to a part (12, 13; 18, 19) of the bag (1) comprising writing.
  12. Bag (1) according to one of claims 1 to 11, characterised in that the closure device (8) is formed by a double-face adhesive strip sensitive to pressure, sold by the company SCAPATAPES under one of the two references DUBLFILM D230 and D151.
EP02292341A 2001-09-26 2002-09-24 Bag closure device Expired - Lifetime EP1298068B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0112386A FR2829997B1 (en) 2001-09-26 2001-09-26 BAG CLOSING DEVICE
FR0112386 2001-09-26

Publications (3)

Publication Number Publication Date
EP1298068A2 EP1298068A2 (en) 2003-04-02
EP1298068A3 EP1298068A3 (en) 2004-08-11
EP1298068B1 true EP1298068B1 (en) 2006-11-02

Family

ID=8867629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02292341A Expired - Lifetime EP1298068B1 (en) 2001-09-26 2002-09-24 Bag closure device

Country Status (5)

Country Link
EP (1) EP1298068B1 (en)
AT (1) ATE344191T1 (en)
DE (1) DE60215745T2 (en)
ES (1) ES2275822T3 (en)
FR (1) FR2829997B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101659133B (en) * 2009-01-14 2011-06-29 陈平 Production method of garbage storage bag with binding tape and garbage storage bag with binding tape

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5044776A (en) * 1990-04-27 1991-09-03 Morgan Adhesives Company Resealable closure system
US5993962A (en) * 1996-01-11 1999-11-30 Ato Findley, Inc. Resealable packaging system
EP0827912A2 (en) * 1996-09-06 1998-03-11 Fres-Co System Usa, Inc. Resealable package
US6048100A (en) * 1999-03-10 2000-04-11 Industrial Label Corp. Resealable closure for a bag
DE29917001U1 (en) * 1999-08-10 2000-01-05 Campina Melkunie B.V., Asten Resealable packaging

Also Published As

Publication number Publication date
FR2829997B1 (en) 2004-02-27
EP1298068A3 (en) 2004-08-11
ES2275822T3 (en) 2007-06-16
FR2829997A1 (en) 2003-03-28
EP1298068A2 (en) 2003-04-02
DE60215745T2 (en) 2007-02-08
DE60215745D1 (en) 2006-12-14
ATE344191T1 (en) 2006-11-15

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