EP1298068A2 - Bag closure device - Google Patents

Bag closure device Download PDF

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Publication number
EP1298068A2
EP1298068A2 EP02292341A EP02292341A EP1298068A2 EP 1298068 A2 EP1298068 A2 EP 1298068A2 EP 02292341 A EP02292341 A EP 02292341A EP 02292341 A EP02292341 A EP 02292341A EP 1298068 A2 EP1298068 A2 EP 1298068A2
Authority
EP
European Patent Office
Prior art keywords
bag
film
adhesive
opening
securing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02292341A
Other languages
German (de)
French (fr)
Other versions
EP1298068A3 (en
EP1298068B1 (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
Anticipated expiration legal-status Critical
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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 support heavy loads up to 20kg or more, generally used to package animal feed, flour, sugar, fertilizers, etc ..., in general made of reinforced paper, plastic material resistant or otherwise, hereinafter referred to as industrial bags.
  • the hook-and-loop fasteners are expensive, which explains their use only on some special bags, and, in addition, they hide a part of the bag, which requires the printer of the bag to have a presentation (including the presentation safety regulations relating to the product (s) content (s) in the bag) modified to take account of future location of the locking device, different from the presentation for the same bags intended not to be fitted with resealable closure.
  • the zippers are certainly more discreet than bags with a device of self-gripping closure, but they are not reliable, especially when the bags contain loads greater than 5kg. In addition, they must be incorporated from the manufacturing of the bag. Finally, these zippers encroach on them also across the width of the bag.
  • the problem is to realize, for bags industrial, a closing device which allows the user to close a bag of safely after opening it, even if it has a fairly heavy load, which allows to have a resealable 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 closing device composed of at least one film, the first side of which is provided with an adhesive capable of permanently joining the film at the first part of the bag located on a first surface of the bag, and the second face of which is provided with an adhesive capable of dissociating and securing the film to a second part of the bag located on the surface opposite to the first surface with respect to the opening so as to close the opening.
  • the bag is capable of containing a charge of at least less 2kg and the adhesive securing the film to the bag repeatedly at an adhesive power between 2 and 2.5 N / cm according to AFERA 4001 standard.
  • the opening of a bag fitted with such a device closure can be easily closed securely and repeated.
  • the bag can be made without the closing device which can be added regardless of the bag's manufacture.
  • the fact to use a double-sided adhesive film, without any special mechanism allows an opening maximum which is equal to the cross section of the bag.
  • the devices are consist of an opaque label which requires plan from the manufacturing of the bag the location of this label so that no registration is printed at this location.
  • the film and the two adhesives are transparent which allows not to modify the external presentation of the bag whose information can remain in the place initial.
  • 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 surfaces 2, 3 opposite the bottom 6 defines a opening 7.
  • the bag 1 also includes a device for closure 8 disposed near the opening 7.
  • the closure device 8 is a film 9 of which a first face has an adhesive 10 suitable for securing this film 9 permanently to a first part of bag 1 located on one of the two surfaces 2, 3.
  • the other face of the film 9 has a adhesive 11 suitable for securing and detaching so repeated film 9 to a second part of bag 1 located on the other of the two surfaces 3, 2.
  • this arrangement of the film 9 provides a 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 nearby immediately of opening 7, the other part 12 being located at a predetermined distance far from this opening 7.
  • the film 9 is permanently joined by the adhesive 10 at the part 12 away from the opening 7 so that the user, by folding twice on itself the end 20 of the two surfaces 2, 3 and by applying pressure on the double fold against the adhesive 11, secures the film 9 and the part 13 close to the opening 7.
  • the distance between end 20 and near line 14 of folding corresponds to the width 21 of the double strip downturn.
  • This width 21 also corresponds to the distance between near line 14 and distant line 15 of folding and to that between the distant folding line 15 and the limit line 16.
  • the part 12 remote from the opening 7 is the section between the distant fold line 15 (away from end 20 by a distance equal to two times the width 21 of the double fold band) and the boundary line 16 (far from the end 20 of a distance equal to three times the width 21 of the strip double fold).
  • the film 9 must be positioned in this part 12 away from opening 7 to be effective optimum.
  • the pressure due to the load contained in the bag 1 is transmitted to the section between the line near 14 and the distant fold line 15 (strip double fold).
  • the pressure is very little transmitted to the section between the end 20 and the near fold line 14 (double internal band fold) which contains part 13 close to the opening 7.
  • the pressure exerted on the adhesive 11 for securing and detaching repeatedly the film 9 in bag 1 remains weak, well that 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 therefore it is possible to apply the closure device 8 on registrations, which makes it possible not to modify the external presentation of the bag 1.
  • the size of the film 9 can be easily determined by those skilled in the art.
  • the film can have a length between two-thirds and three-quarters of the width 22 of a surface 2,3 of the bag 1, according to the load contained.
  • the film 9 can be made of polyester.
  • the adhesive 10 able to secure the film 9 to the bag 1 definitely can be acrylic based. he can the same applies to the adhesive 11 capable of joining together and separate the film 9 from the bag 1 repeatedly.
  • Double-sided adhesive tapes sensitive to pressure sold by the company SCAPATAPES under the reference DUBLFILM D230 and D151 can be used as closing device 8 according to the invention.
  • the bag 1 is made of a material having a very low porosity and not delaminating, for example in polyester, polypropylene, polyethylene ... It would obviously possible to use a bag 1 made from paper or the like whose faces adapted to cooperate with the adhesives (10, 11), or at least with the suitable adhesive to fasten and separate the film 9 to the bag 1 of repeatedly, are covered with a film made in one material with very low porosity and does not not delaminating.
  • Adhesive 10 apt to secure the film 9 to the bag 1 definitively a an adhesive power of at least 7.5N / cm and that 11 suitable to fasten and separate the film 9 to the bag 1 of repeatedly has an adhesive power between 2 and 2.5 N / cm.
  • a second series was carried out according to this same standard but using a coated paper backing a polyester film (paper used for manufacturing bags) instead of the required stainless steel support by the standard.
  • the adhesive 10 capable of joining the film 9 to bag 1 permanently has adhesive power higher than the tear strength of the paper.
  • the one 11 able to secure and separate the film 9 to bag 1 repeatedly has an adhesive power included between 1 and 2.5N / cm depending on the type of paper used.
  • a third series was carried out according to this same standard but using coated paper backing 80.
  • the adhesive 10 able to secure the film 9 to the bag 1 definitively has an adhesive power greater than the resistance to tearing of paper.
  • the one 11 suitable for secure and separate the film 9 to the bag 1 of repeatedly has an adhesive power of between 0.4 and 1.5N / cm depending on the type of support used.
  • Adhesive 10 capable of joining the film 9 to bag 1 definitely has power adhesive superior to the tear resistance of the paper. That 11 capable of joining and dissociating the film 9 in the bag repeatedly has an adhesive power between 4.5 and 6.5N / cm depending on the type of support used.
  • the adhesive therefore makes it possible to securely close a bag containing large loads of the order of 10 or 15 kg, even up to 20kg, even 25kg, and this after more than thirty or even one quarantine, openings and closings for a bag whose faces adapted to cooperate with the adhesives consist of a film made of a material with very low porosity (polyester film, polypropylene, polyethylene, etc.), this bag can be paper-based, aluminum or plastic.
  • the closing device according to the present invention therefore makes it possible to close extremely reliable and repeated industrial bags, it also allows print information on the bag without worrying the location of this locking device. Finally, the manufacture of a bag provided with such a device allows to offer the user 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 support heavy loads up to 20kg or more, generally used to package animal feed, flour, sugar, fertilizers, etc ..., in general made of reinforced paper, plastic material resistant or otherwise, 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 closure of industrial bags currently used not allow the user to close the bag after having opened it for the 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 closing devices of industrial bag allowing the bag to be closed, it on the one hand there are hook-and-loop fasteners Velcro type, and on the other hand zipper closure devices.

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.The hook-and-loop fasteners are expensive, which explains their use only on some special bags, and, in addition, they hide a part of the bag, which requires the printer of the bag to have a presentation (including the presentation safety regulations relating to the product (s) content (s) in the bag) modified to take account of future location of the locking device, different from the presentation for the same bags intended not to be fitted with resealable closure.

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 from the bag. As a result, the opening does not reach its optimal dimension which corresponds to the whole bag circumference.

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 zippers are certainly more discreet than bags with a device of self-gripping closure, but they are not reliable, especially when the bags contain loads greater than 5kg. In addition, they must be incorporated from the manufacturing of the bag. Finally, these zippers encroach on them also across 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.It exists for bags supporting loads weak, i.e. at most 1kg, devices adhesive-based closure allowing reclosure bag after opening. However, the adhesives currently used do not allow many closing and reopening operations: the system adhesive no longer ensures closure after a few maneuvers, even if no effort is exerted on it. A fortiori, these adhesives do not allow to apply such devices to bags industrial: the pressure exerted by the content is way too high for the bag to close do it safely, especially after several closing and reopening operation.

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 bags industrial, a closing device which allows the user to close a bag of safely after opening it, even if it has a fairly heavy load, which allows to have a resealable 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.The solution of the present invention is a bag having an opening and a closing device composed of at least one film, the first side of which is provided with an adhesive capable of permanently joining the film at the first part of the bag located on a first surface of the bag, and the second face of which is provided with an adhesive capable of dissociating and securing the film to a second part of the bag located on the surface opposite to the first surface with respect to the opening so as to close the opening. according to the invention, the bag is capable of containing a charge of at least less 2kg and the adhesive securing the film to the bag repeatedly at an adhesive power between 2 and 2.5 N / cm according to AFERA 4001 standard.

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 fitted with such a device closure can be easily closed securely and repeated. The bag can be made without the closing device which can be added regardless of the bag's manufacture. Finally, the fact to use a double-sided adhesive film, without any special mechanism allows an opening maximum 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 are consist of an opaque label which requires plan from the manufacturing of the bag the location of this label so that no registration is printed at this location. According to a particular mode, the film and the two adhesives are transparent which allows not to modify the external presentation of the bag whose information can remain in the place initial.

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 emerge from the description which follows. In the accompanying drawings, given by way of nonlimiting 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 surfaces 2, 3 opposite the bottom 6 defines a opening 7.

Le sac 1 comporte aussi un dispositif de fermeture 8 disposé à proximité de l'ouverture 7.The bag 1 also includes a device for closure 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 of which a first face has an adhesive 10 suitable for securing this film 9 permanently to a first part of bag 1 located on one of the two surfaces 2, 3. The other face of the film 9 has a adhesive 11 suitable for securing and detaching so repeated film 9 to a second part of 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 well at the Figure 1, this arrangement of the film 9 provides a 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 an embodiment of the present invention, one 13 of the two parts 12,13 of the bag cooperating with the film 9 is located nearby immediately of opening 7, the other part 12 being located at a predetermined distance far from 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 Figures 1 and 2, the film 9 is permanently joined by the adhesive 10 at the part 12 away from the opening 7 so that the user, by folding twice on itself the end 20 of the two surfaces 2, 3 and by applying pressure on the double fold against the adhesive 11, secures the film 9 and the part 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 Figures 1 and 2, the distance between end 20 and near line 14 of folding corresponds to the width 21 of the double strip downturn. This width 21 also corresponds to the distance between near line 14 and distant line 15 of folding and to that between the distant 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 part 12 remote from the opening 7 is the section between the distant fold line 15 (away from end 20 by a distance equal to two times the width 21 of the double fold band) and the boundary line 16 (far from the end 20 of a distance equal to three times the width 21 of the strip double fold).

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 away from opening 7 to be effective optimum.

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 part 13 close to the opening 7. Consequently, the part 12 distant from the opening (located between distant line 15 of folding and the limit line 16) cooperates with the adhesive 11 to be able to unite and disassociate so repeated film 9 in 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 in accordance with the first embodiment, the pressure due to the load contained in the bag 1 is transmitted to the section between the line near 14 and the distant fold line 15 (strip double fold). The pressure is very little transmitted to the section between the end 20 and the near fold line 14 (double internal band fold) which contains part 13 close to the opening 7. Thereby the pressure exerted on the adhesive 11 for securing and detaching repeatedly the film 9 in bag 1 remains weak, well that 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 therefore it is possible to apply the closure device 8 on registrations, 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 be easily determined by those skilled in the art. For a width of 25mm, the film can have a length between two-thirds and three-quarters of the width 22 of a surface 2,3 of the bag 1, according to the load contained.

Le film 9 peut être en polyester.The film 9 can be made of 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 able to secure the film 9 to the bag 1 definitely can be acrylic based. he can the same applies to the adhesive 11 capable of joining together and separate the film 9 from 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.Double-sided adhesive tapes sensitive to pressure sold by the company SCAPATAPES under the reference DUBLFILM D230 and D151 can be used as closing 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 in polyester, polypropylene, polyethylene ... It would obviously possible to use a bag 1 made from paper or the like whose faces adapted to cooperate with the adhesives (10, 11), or at least with the suitable adhesive to fasten and separate the film 9 to the bag 1 of repeatedly, are covered with a film made in one material with very low porosity and does not not delaminating.

Plusieurs séries de tests d'adhérence ont été réalisés sur ces adhésifs. Several series of adhesion tests have been made 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 carried out according to the standard AFERA 4001 which defines a method for measuring adhesive performance of an adhesive. Adhesive 10 apt to secure the film 9 to the bag 1 definitively a an adhesive power of at least 7.5N / cm and that 11 suitable to fasten and separate the film 9 to the bag 1 of repeatedly has an adhesive power between 2 and 2.5 N / 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 coated paper backing a polyester film (paper used for manufacturing bags) instead of the required stainless steel support by the standard. The adhesive 10 capable of joining the film 9 to bag 1 permanently has adhesive power higher than the tear strength of the paper. The one 11 able to secure and separate the film 9 to bag 1 repeatedly has an adhesive power included between 1 and 2.5N / 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 carried out according to this same standard but using coated paper backing 80. The adhesive 10 able to secure the film 9 to the bag 1 definitively has an adhesive power greater than the resistance to tearing of paper. The one 11 suitable for secure and separate the film 9 to the bag 1 of 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 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 produced in the same conditions as the third series, but after a 6 days aging at 80 ° C followed by a rest of 4 hours at 23 C. Adhesive 10 capable of joining the film 9 to bag 1 definitely has power adhesive superior to the tear resistance of the paper. That 11 capable of joining and dissociating the film 9 in the bag repeatedly has an adhesive power between 4.5 and 6.5N / cm depending on the type of support 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 of these test series, there is no tearing off the paper during the test on the adhesive 11 able to secure and separate 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'abímant pas le support (aucune trace d'arrachage du support).These tests show the quality of the adhesion of the adhesive 10 able to secure the film 9 to the bag 1 of definitively which is more important than the strength of the material used to make the bag. They also show that the adhesive 11 capable of secure and separate the film 9 to the bag 1 of 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 therefore makes it possible to securely close a bag containing large loads of the order of 10 or 15 kg, even up to 20kg, even 25kg, and this after more than thirty or even one quarantine, openings and closings for a bag whose faces adapted to cooperate with the adhesives consist of a film made of a material with very low porosity (polyester film, polypropylene, polyethylene, etc.), this bag can 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 closing device according to the present invention therefore makes it possible to close extremely reliable and repeated industrial bags, it also allows print information on the bag without worrying the location of this locking device. Finally, the manufacture of a bag provided with such a device allows to offer the user maximum opening corresponding to the cross section of the bag.

Claims (11)

Sac (1) possédant une ouverture (7) et un dispositif de fermeture (8) composé d'au moins un film (9) dont une première face est munie d'un adhésif (10) apte à solidariser définitivement le film (9) à une première partie (12,13; 18,19) du sac (1) située sur une première surface (2,3) du sac (1), et dont la deuxième face est munie d'un adhésif (11) apte à désolidariser et solidariser le film (9) à une deuxième partie (13,12; 19,18) du sac (1) située sur la surface (3,2) opposée à la première surface (2,3) par rapport à l'ouverture (7) de façon à fermer cette ouverture (7), caractérisé en ce que le sac (1) est apte à contenir une charge d'au moins 2kg, et en ce que l'adhésif (11) solidarisant le film (9) au sac (1) de façon répétée a un pouvoir adhésif compris entre 2 et 2,5N/cm selon la norme AFERA 4001.Bag (1) having an opening (7) and a closing device (8) composed of at least one film (9), a first face of which is provided with an adhesive (10) capable of permanently securing the film (9) to a first part (12,13; 18,19) of the bag (1) located on a first surface (2,3) of the bag (1), and the second face of which is provided with an adhesive (11) capable of separating and securing the film (9) to a second part (13,12; 19,18) of the bag (1) located on the surface (3,2) opposite the first surface (2,3) relative to the opening (7) so as to close this opening (7), characterized in that the bag (1) is capable of containing a load of at least 2 kg, and in that the adhesive (11) securing the film (9 ) to the bag (1) repeatedly has an adhesive power of between 2 and 2.5N / cm according to standard AFERA 4001. Sac (1) selon la revendication 1, caractérisé en ce que le dispositif de fermeture (8) est solidarisé à une partie (12,13; 18,19) du sac (1) comportant des inscriptions.Bag (1) according to claim 1, characterized in that the closure device (8) is secured to a part (12,13; 18,19) of the bag (1) having inscriptions. Sac (1) selon la revendication 1 ou 2, caractérisé en ce qu'une (13) des deux parties (12,13) du sac (1) coopérant avec le film (9) est située à proximité immédiate de l'ouverture (7), l'autre partie (12) étant situé à une distance prédéterminée plus éloignée de cette ouverture (7), permettant à l'utilisateur de pouvoir solidariser le sac (1) au film (9) en pliant deux fois sur elle-même l'extrémité (20) des deux surfaces (2,3) proche de l'ouverture (7). Bag (1) according to claim 1 or 2, characterized in that one (13) of the two parts (12,13) of the bag (1) cooperating with the film (9) is located in the immediate vicinity of the opening ( 7), the other part (12) being located at a predetermined distance further from this opening (7), allowing the user to be able to secure the bag (1) to the film (9) by folding twice on it- even the end (20) of the two surfaces (2,3) close to the opening (7). Sac (1) selon la revendication 3, caractérisé en ce que la partie (12) éloignée de l'ouverture (7) est comprise dans une section délimitée par une ligne éloignée (15) de pliage et une ligne limite (16) respectivement éloignées de l'extrémité (20) d'une distance égale à deux fois et à trois fois la largeur (21) de la bande du double repli.Bag (1) according to claim 3, characterized in that the part (12) distant from the opening (7) is included in a section delimited by a distant fold line (15) and a limit line (16) respectively distant from the end (20) of a distance equal to twice and three times the width (21) of the strip of the double fold. Sac (1) selon l'une des revendications 1 à 4, caractérisé en ce que le film (9) est en polyester.Bag (1) according to one of claims 1 to 4, characterized in that the film (9) is made of polyester. Sac (1) selon l'une des revendications 1 à 5, caractérisé en ce que l'adhésif (10) solidarisant le film (9) au sac (1) de façon définitive est un adhésif à base acrylique.Bag (1) according to one of claims 1 to 5, characterized in that the adhesive (10) securing the film (9) to the bag (1) definitively is an acrylic-based adhesive. Sac (1) selon l'une des revendications 1 à 6, caractérisé en ce que l'adhésif (11) solidarisant le film (9) au sac (1) de façon répétée est un adhésif à base acrylique.Bag (1) according to one of claims 1 to 6, characterized in that the adhesive (11) securing the film (9) to the bag (1) repeatedly is an acrylic-based adhesive. Sac (1) selon l'une des revendications 1 à 7, caractérisé en ce que l'adhésif (10) solidarisant le film (9) au sac (1) de façon définitive a un pouvoir adhésif d'au moins 7,5N/cm selon la norme AFERA 4001.Bag (1) according to one of claims 1 to 7, characterized in that the adhesive (10) securing the film (9) to the bag (1) definitively has an adhesive power of at least 7.5N / cm according to standard AFERA 4001. Sac (1) selon l'une des revendications 1 à 8, caractérisé en ce que la matière du sac (1) adaptée à coopérée avec l'adhésif (11) qui solidarisant le film (9) au sac (1) de façon répétée est un matériau à une très faible porosité et ne se délaminant pas, par exemple un film en polyester, polypropylène ou polyéthylène. Bag (1) according to one of claims 1 to 8, characterized in that the bag material (1) adapted to cooperate with the adhesive (11) which secures the film (9) to the bag (1) repeatedly is a material with a very low porosity and not delaminating, for example a film of polyester, polypropylene or polyethylene. Sac (1) selon l'une des revendications 1 à 9, caractérisé en ce que l'adhésif (10) solidarisant le film (9) au sac (1) de façon définitive a un pouvoir adhésif supérieur à la résistance au déchirement de la matière constituant le sac (1).Bag (1) according to one of claims 1 to 9, characterized in that the adhesive (10) securing the film (9) to the bag (1) definitively has an adhesive power greater than the tear resistance of the material constituting the bag (1). Sac (1) selon l'une des revendications 1 à 10, caractérisé en ce que l'adhésif (11) solidarisant le film (9) au sac (1) de façon répétée a un pouvoir adhésif compris entre 0,4 et 2,5N/cm selon la norme AFERA 4001, le support en acier requis par cette norme étant remplacé par la matière constituant le sac (1).Bag (1) according to one of claims 1 to 10, characterized in that the adhesive (11) securing the film (9) to the bag (1) repeatedly has an adhesive power of between 0.4 and 2, 5N / cm according to standard AFERA 4001, the steel support required by this standard being replaced by the material constituting the bag (1).
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 true EP1298068A2 (en) 2003-04-02
EP1298068A3 EP1298068A3 (en) 2004-08-11
EP1298068B1 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

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010081315A1 (en) * 2009-01-14 2010-07-22 Chen Ping Manufacturing method of garbage containing bag with lacing rope and garbage containing bag with lacing rope

Citations (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
EP0827912A2 (en) * 1996-09-06 1998-03-11 Fres-Co System Usa, Inc. Resealable package
US5993962A (en) * 1996-01-11 1999-11-30 Ato Findley, Inc. Resealable packaging system
US6048100A (en) * 1999-03-10 2000-04-11 Industrial Label Corp. Resealable closure for a bag
WO2001010736A1 (en) * 1999-08-10 2001-02-15 Campina Melkunie B.V. - Divisie Kaas Reclosable package for cheese

Patent Citations (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
WO2001010736A1 (en) * 1999-08-10 2001-02-15 Campina Melkunie B.V. - Divisie Kaas Reclosable package for cheese

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010081315A1 (en) * 2009-01-14 2010-07-22 Chen Ping Manufacturing method of garbage containing bag with lacing rope and garbage containing bag with lacing rope

Also Published As

Publication number Publication date
FR2829997B1 (en) 2004-02-27
DE60215745D1 (en) 2006-12-14
EP1298068A3 (en) 2004-08-11
DE60215745T2 (en) 2007-02-08
EP1298068B1 (en) 2006-11-02
ES2275822T3 (en) 2007-06-16
ATE344191T1 (en) 2006-11-15
FR2829997A1 (en) 2003-03-28

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