EP0908392B1 - bag with self-adhesive closure - Google Patents

bag with self-adhesive closure Download PDF

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Publication number
EP0908392B1
EP0908392B1 EP19980402439 EP98402439A EP0908392B1 EP 0908392 B1 EP0908392 B1 EP 0908392B1 EP 19980402439 EP19980402439 EP 19980402439 EP 98402439 A EP98402439 A EP 98402439A EP 0908392 B1 EP0908392 B1 EP 0908392B1
Authority
EP
European Patent Office
Prior art keywords
bag
film
opening
bag according
self
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
EP19980402439
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German (de)
French (fr)
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EP0908392A1 (en
Inventor
Henri Bois
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.)
Flexico France SARL
Original Assignee
Flexico France SARL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Flexico France SARL filed Critical Flexico France SARL
Publication of EP0908392A1 publication Critical patent/EP0908392A1/en
Application granted granted Critical
Publication of EP0908392B1 publication Critical patent/EP0908392B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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

Definitions

  • the present invention relates to the field of sachets self-adhesive tape closure.
  • These known sachets comprise either a self-adhesive strip double-sided glued on a closing flap so that one of the faces of said band remains accessible, ie (as illustrated in Figure 1) a band self-adhesive single-sided 1 glued on a flap 2 provided with at least one opening 3, so that the adhesive face of this strip 1 is accessible at the level of said opening 3.
  • all these bags known comprise a removable cover flap 4 deposited on the face accessible sticker of the aforementioned band 1, to prevent this band 1 inadvertently adheres to an adjacent surface, for example when several such bags are stacked.
  • US-5026174 discloses a plastic bag in polyethylene or polypropylene including a flap of closure consisting of two sections interconnected by a band one-sided sticker.
  • the document proposes a film thickness between 0.0005 and 0.020 inches, or 12.7 to 508 ⁇ m and a width self-adhesive tape, that is to say the distance between the two sections of the flap between 0.030 to 1 inch, 0.76mm and 25.4mm.
  • US-3079066 discloses a general structure of sachet comprising a self-adhesive flap, without giving any value dimensional.
  • the present invention now aims to propose new means of closure for such bag elements closing stickers.
  • the present invention makes it possible to avoid the presence of a flap of coverage, thanks to a reduced ratio (from 6 to 25) between width of the opening arranged in the film and thickness thereof.
  • the known bags of the state of the art include a much greater ratio between the width of the opening arranged in the film and the thickness of it. According to the state of the art, this ratio is greater than 50.
  • An attached bag 10 in accordance with FIG. invention comprising two main walls 12, 14 connected between they on three of their sides and thus defining a mouth 16 at level of the fourth side of these walls 12, 14.
  • This mouth 16 can be closed by a flap 18 extending one of the walls 12 and provided with a self-adhesive element 20 placed opposite at least one opening 19 formed in the flap 18.
  • the adhesive face 22 of the element 20 is placed against the flap 18.
  • this self-adhesive face 22 is accessible through the opening 19.
  • the opening 19 has a ratio between its smallest width "L” and the thickness "e" of the film component walls 12 and 14, included between 6 and 25, very preferably between 8 and 20.
  • the film making up the walls 12 and 14 can be the object of numerous embodiments. It is preferably formed of a film made of plastic, preferably polyolefin, especially polypropylene or in high density polyethylene. However the film can be formed of any other equivalent composition, especially plastic. The film can also be multilayer plastic or even for example plastic / paper or plastic / metal sheet. The film has typically a thickness of between 100 and 150 ⁇ m.
  • the small width of the opening 19 above is typically between 0.6mm and 6mm, advantageously between 0.6mm and 3.75mm, very preferably between 0.8mm and 3mm.
  • the opening 19 above can be formed of a rectilinear light continuous formed between two separate sections of the flap.
  • the most small width "above is equal to the width of this light.
  • the ratio between the width of the light 19 and the thickness of the film is preferably between 6 and 25, very preferably between 8 and 20.
  • the width of the light is advantageously between 0.6 mm and 3.75mm and preferably between 0.8mm and 3mm.
  • the opening 19 may also be formed of a cutout closed contour, for example circular contour, polygonal or other.
  • the smallest width is equal to the smallest dimension of the cutting, ie for example the diameter for a circular cut, or the dimension of one side for a contour of square outline.
  • the flap 18 preferably has several such openings.
  • the ratio between the width of the light 19 and the thickness of the film is preferably between 8 and 25.
  • the width of the closed edge cut is advantageously included between 0.8mm and 6mm.
  • the present invention makes it possible to stack adjacent pouches without require the presence of cover flaps on the accessible face of the self-adhesive element 20, and while permitting on the other hand a closure reliable bag by deformation of the adhesive tape 20 through the opening 19. If necessary, this deformation of adhesive tape 20 can be obtained with a tool, such as a wheel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Description

La présente invention concerne le domaine des sachets d'emballage à fermeture par bande autocollante.The present invention relates to the field of sachets self-adhesive tape closure.

De nombreux sachets de ce type ont déjà été proposés.Many bags of this type have already been proposed.

Ces sachets connus comprennent soit une bande autocollante double face collée sur un rabat de fermeture de sorte que une des faces de ladite bande reste accessible, soit (comme illustré sur la figure 1) une bande autocollante simple face 1 collée sur un rabat 2 muni d'au moins une ouverture 3, de sorte que la face autocollante de cette bande 1 soit accessible au niveau de ladite ouverture 3. Par ailleurs tous ces sachets connus comprennent un volet de couverture amovible 4 déposé sur la face autocollante accessible de la bande 1 précitée, pour éviter que cette bande 1 n'adhère de façon intempestive sur une surface adjacente, par exemple lorsque plusieurs de tels sachets sont empilés.These known sachets comprise either a self-adhesive strip double-sided glued on a closing flap so that one of the faces of said band remains accessible, ie (as illustrated in Figure 1) a band self-adhesive single-sided 1 glued on a flap 2 provided with at least one opening 3, so that the adhesive face of this strip 1 is accessible at the level of said opening 3. Furthermore all these bags known comprise a removable cover flap 4 deposited on the face accessible sticker of the aforementioned band 1, to prevent this band 1 inadvertently adheres to an adjacent surface, for example when several such bags are stacked.

Le document US-5026174 décrit un sachet plastique en polyéthylène ou polypropylène notamment comprenant un rabat de fermeture constitué de deux tronçons reliés entre eux par une bande autocollante une face. Le document propose une épaisseur de film comprise entre 0,0005 et 0,020 pouce, soit 12,7 à 508µm et une largeur de bande autocollante, c'est-à-dire distance entre les deux tronçons du rabat comprise entre 0,030 à 1 pouce, soit 0,76mm et 25,4mm.US-5026174 discloses a plastic bag in polyethylene or polypropylene including a flap of closure consisting of two sections interconnected by a band one-sided sticker. The document proposes a film thickness between 0.0005 and 0.020 inches, or 12.7 to 508μm and a width self-adhesive tape, that is to say the distance between the two sections of the flap between 0.030 to 1 inch, 0.76mm and 25.4mm.

Le document US-3079066 décrit une structure générale de sachet comprenant un rabat autocollant, sans donner de valeur dimensionnelle.US-3079066 discloses a general structure of sachet comprising a self-adhesive flap, without giving any value dimensional.

Ces sachets ont certes rendu de grands services.These sachets have certainly rendered great services.

Cependant ils ne donnent pas totalement satisfaction.However, they do not give complete satisfaction.

En particulier l'utilisation de tels sachets sur des machines d'emballage automatiques, est assez difficile à réaliser, et dans tous les cas fort complexe, en raison de la présence du volet de couverture 4 qu'il est nécessaire de retirer au préalable, c'est-à-dire avant de refermer le sachet.In particular the use of such sachets on machines automatic packaging, is quite difficult to achieve, and in any case very complex, because of the presence of the cover flap 4 that it is necessary to remove beforehand, that is to say before closing the bag.

La présente invention a maintenant pour but de proposer de nouveaux moyens de fermeture pour de tels sachets à éléments de fermeture autocollants.The present invention now aims to propose new means of closure for such bag elements closing stickers.

Ce but est atteint dans le cadre de la présente invention grâce à un sachet du type défini en revendication 1 annexée.This object is achieved in the context of the present invention by means of a bag of the type defined in appended claim 1.

Ainsi la présente invention permet d'éviter la présence d'un volet de couverture, grâce à un rapport réduit (de 6 à 25) entre largeur de l'ouverture ménagée dans le film et épaisseur de celui-ci.Thus the present invention makes it possible to avoid the presence of a flap of coverage, thanks to a reduced ratio (from 6 to 25) between width of the opening arranged in the film and thickness thereof.

Par comparaison les sachets connus de l'état de la technique comprennent un rapport bien supérieur entre la largeur de l'ouverture ménagée dans le film et l'épaisseur de celui-ci. Selon l'état de la technique, ce rapport est supérieur à 50.By comparison the known bags of the state of the art include a much greater ratio between the width of the opening arranged in the film and the thickness of it. According to the state of the art, this ratio is greater than 50.

D'autres caractéristiques, buts et avantages de la présente invention apparaitront à la lecture de la description détaillée qui va suivre et en regard des dessins annexés, donnés à titre d'exemple non limitatif et sur lesquels :

  • la figure 1 précédemment décrite représente un sachet conforme à l'état de la technique,
  • la figure 2 représente une vue schématique latérale d'un sachet conforme à la présente invention, et
  • la figure 3 représente une vue partielle agrandie de ce sachet.
Other features, objects and advantages of the present invention will appear on reading the detailed description which follows and with reference to the appended drawings, given by way of non-limiting example and in which:
  • FIG. 1 previously described represents a bag according to the state of the art,
  • FIG. 2 represents a schematic side view of a bag according to the present invention, and
  • Figure 3 shows an enlarged partial view of this bag.

On aperçoit sur la figure 2 annexée un sachet 10 conforme à la présente invention comprenant deux parois principales 12, 14 reliées entre elles sur trois de leurs côtés et définissant ainsi une embouchure 16 au niveau du quatrième côté de ces parois 12, 14. Cette embouchure 16 peut être obturée par un rabat 18 prolongeant l'une des parois 12 et muni d'un élément autocollant 20 placé en regard d'au moins une ouverture 19 formée dans le rabat 18. La face autocollante 22 de l'élément 20 est placée contre le rabat 18. Ainsi cette face autocollante 22 est accessible à travers l'ouverture 19. Il suffit de retourner le rabat 18 contre la paroi 14 opposée, de sorte que cette face autocollante 22 accessible à travers l'ouverture 19 vienne reposer sur cette paroi 14, pour fermer le sachet.An attached bag 10 in accordance with FIG. invention comprising two main walls 12, 14 connected between they on three of their sides and thus defining a mouth 16 at level of the fourth side of these walls 12, 14. This mouth 16 can be closed by a flap 18 extending one of the walls 12 and provided with a self-adhesive element 20 placed opposite at least one opening 19 formed in the flap 18. The adhesive face 22 of the element 20 is placed against the flap 18. Thus this self-adhesive face 22 is accessible through the opening 19. Just turn the flap 18 against the opposite wall 14, so that this self-adhesive face 22 accessible through the opening 19 come to rest on this wall 14, to close the bag.

Plus précisément encore selon la présente invention, l'ouverture 19 possède un rapport entre sa plus petite largeur "L" et l'épaisseur "e" du film composant les parois 12 et 14, compris entre 6 et 25, très préférentiellement entre 8 et 20.More precisely still according to the present invention, the opening 19 has a ratio between its smallest width "L" and the thickness "e" of the film component walls 12 and 14, included between 6 and 25, very preferably between 8 and 20.

Dans le cadre de la présente invention, on entend par "plus petite largeur" de l'ouverture 19, la plus petite distance rectiligne entre deux bords de cette ouverture, passant par tout point quelconque de l'ouverture.In the context of the present invention, the term "smaller width "of opening 19, the smallest straight distance between two edges of this opening, passing through any point of the opening.

Le film composant les parois 12 et 14 peut faire l'objet de nombreux modes de réalisation. Il est formé de préférence d'un film en matière plastique, avantageusement en polyoléfine, notamment en polypropylène ou en polyéthylène haute densité. Cependant le film peut être formé de toute autre composition équivalente, notamment en matière plastique. Le film peut aussi être multicouche en plastique, voire par exemple plastique/papier ou plastique/feuille de métal. Le film posséde typiquement une épaisseur comprise entre 100 et 150µm.The film making up the walls 12 and 14 can be the object of numerous embodiments. It is preferably formed of a film made of plastic, preferably polyolefin, especially polypropylene or in high density polyethylene. However the film can be formed of any other equivalent composition, especially plastic. The film can also be multilayer plastic or even for example plastic / paper or plastic / metal sheet. The film has typically a thickness of between 100 and 150 μm.

Ainsi la petite largeur de l'ouverture 19 précitée est typiquement comprise entre 0,6mm et 6mm, avantageusement entre 0,6mm et 3,75mm, très préférentiellement entre 0,8mm et 3mm.Thus the small width of the opening 19 above is typically between 0.6mm and 6mm, advantageously between 0.6mm and 3.75mm, very preferably between 0.8mm and 3mm.

L'ouverture 19 précitée peut être formée d'une lumière rectiligne continue formée entre deux tronçons séparés du rabat. Dans ce cas "la plus petite largeur" précitée est égale à la largeur de cette lumière. Et dans ce cas, le rapport entre la largeur de la lumière 19 et l'épaisseur du film est de préférence comprise entre 6 et 25, très préférentiellement entre 8 et 20. Ainsi la largeur de la lumière est avantageusement comprise entre 0,6mm et 3,75mm et préférentiellement entre 0,8mm et 3mm.The opening 19 above can be formed of a rectilinear light continuous formed between two separate sections of the flap. In this case "the most small width "above is equal to the width of this light. case, the ratio between the width of the light 19 and the thickness of the film is preferably between 6 and 25, very preferably between 8 and 20. Thus the width of the light is advantageously between 0.6 mm and 3.75mm and preferably between 0.8mm and 3mm.

L'ouverture 19 peut également être formée d'une découpe à contour fermé, par exemple de contour circulaire, polygonal ou autre. Dans ce cas "la plus petite largeur" est égale à la plus petite dimension de la découpe, c'est à dire par exemple le diamètre pour une découpe circulaire, ou la dimension d'un côté pour une découpe de contour carrée. Dans le cas d'une ouverture à contour fermé, le rabat 18 possède de préférence plusieurs de telles ouvertures. Et dans ce cas, le rapport entre la largeur de la lumière 19 et l'épaisseur du film est de préférence comprise entre 8 et 25. Ainsi la largeur de la découpe à bord fermé est avantageusement comprise entre 0,8mm et 6mm.The opening 19 may also be formed of a cutout closed contour, for example circular contour, polygonal or other. In this case "the smallest width" is equal to the smallest dimension of the cutting, ie for example the diameter for a circular cut, or the dimension of one side for a contour of square outline. In the case of a closed contour opening, the flap 18 preferably has several such openings. And in this case, the ratio between the width of the light 19 and the thickness of the film is preferably between 8 and 25. Thus the width of the closed edge cut is advantageously included between 0.8mm and 6mm.

La présente invention permet d'empiler des sachets adjacents, sans nécessiter la présence de volets de couverture sur la face accessible de l'élément autocollant 20, et tout en autorisant d'autre part une fermeture fiable du sachet par déformation de la bande autocollante 20 à travers l'ouverture 19. Le cas échéant, cette déformation de bande autocollante 20 peut être obtenue avec un outil, tel qu'une mollette.The present invention makes it possible to stack adjacent pouches without require the presence of cover flaps on the accessible face of the self-adhesive element 20, and while permitting on the other hand a closure reliable bag by deformation of the adhesive tape 20 through the opening 19. If necessary, this deformation of adhesive tape 20 can be obtained with a tool, such as a wheel.

Bien entendu la présente invention n'est pas limitée au mode de réalisation qui vient d'être décrit, mais s'étend à toutes variantes conformes aux revendications annexées.Of course, the present invention is not limited to the mode of realization which has just been described, but extends to all variants conforming the appended claims.

Claims (12)

  1. Bag with a self-adhesive closure element in which the self-adhesive closure element (20) faces at least one opening (19) made in a wall (12) of the film of which the bag is composed, such that the self-adhesive face of the element (20) is accessible through the said opening (19) to allow the bag to be closed by contact of the self-adhesive face of the closure element (20) on a second wall (14) of the bag, opposite the wall (12) having the closure element, characterized in that the film of which the walls (12, 14) of the bag are composed has a thickness "e" of between 100 and 150 µm, the said opening (19) having two facing edges separated by a dimension "L" of between 6 and 25 times the thickness "e" of the film.
  2. Bag according to Claim 1, characterized in that the said two facing edges of the opening (19) are separated by a dimension."L" of between 8 and 20 times the thickness "e" of the film.
  3. Bag according to either of Claims 1 and 2, characterized in that the film of which the walls (12, 14) of the bag are composed is made of plastic.
  4. Bag according to one of Claims 1 to 3, characterized in that the film of which the walls (12, 14) of the bag are composed is chosen from the group comprising polyolefins, in particular high-density polypropylene or polyethylene.
  5. Bag according to one of Claims 1 to 4, characterized in that the said two facing edges of the opening (19) are separated by a dimension of between 0.6 mm and 3.75 mm, most preferably between 0.8 mm and 3 mm.
  6. Bag according to one of Claims 1 to 5, characterized in that the opening (19) is formed by a straight continuous slot made between two separate sections of a flap, the width of this slot corresponding to the dimension separating the said two facing edges.
  7. Bag according to Claim 6, characterized in that the ratio between the width of the slot (19) and the thickness of the film is between 6 and 25, preferably between 8 and 20.
  8. Bag according to either of Claims 6 and 7, characterized in that the width of the slot is between 0.6 mm and 3.75 mm, advantageously between 0.8 and 3 mm.
  9. Bag according to one of Claims 1 to 5, characterized in that the opening (19) is formed by a cut-out with a closed outline, for example a circular or polygonal outline.
  10. Bag according to Claim 9, characterized in that the ratio between the width of the cut-out with a closed outline (19) and the thickness of the film is between 8 and 25.
  11. Bag according to either of Claims 9 and 10, characterized in that the width of the cut-out with a closed outline is between 0.6 and 3.75 mm.
  12. Bag according to one of Claims 1 to 11, characterized in that the film of which the walls of the bag are composed is a multilayer film.
EP19980402439 1997-10-07 1998-10-05 bag with self-adhesive closure Expired - Lifetime EP0908392B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9712470 1997-10-07
FR9712470A FR2769295B1 (en) 1997-10-07 1997-10-07 SELF-ADHESIVE CLOSING BAG

Publications (2)

Publication Number Publication Date
EP0908392A1 EP0908392A1 (en) 1999-04-14
EP0908392B1 true EP0908392B1 (en) 2005-05-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980402439 Expired - Lifetime EP0908392B1 (en) 1997-10-07 1998-10-05 bag with self-adhesive closure

Country Status (3)

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EP (1) EP0908392B1 (en)
DE (1) DE69830032T2 (en)
FR (1) FR2769295B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8127517B2 (en) 1997-11-07 2012-03-06 Illinois Tool Works Inc. Method and apparatus for placing a product in a flexible recloseable container

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5956924A (en) 1997-11-07 1999-09-28 Rcl Corporation Method and apparatus for placing a product in a flexible recloseable container
US7244222B2 (en) 2004-03-05 2007-07-17 S.C. Johnson Home Storage, Inc. Apparatus for and method of positioning a slider on mating zipper elements
US7163133B2 (en) 2004-03-05 2007-01-16 S.C. Johnson Home Storage, Inc. Apparatus for and method of moving a slider along mating zipper elements

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079066A (en) * 1960-12-21 1963-02-26 Continental Can Co Temporary sealing means for bags
US5026174A (en) * 1988-03-01 1991-06-25 Ultra Creative Corporation Plastic film bag with special flap arrangement
DE9105634U1 (en) * 1991-05-07 1991-06-27 Richard Haag + Sohn GmbH + Co, 7312 Kirchheim Photo work bag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8127517B2 (en) 1997-11-07 2012-03-06 Illinois Tool Works Inc. Method and apparatus for placing a product in a flexible recloseable container

Also Published As

Publication number Publication date
FR2769295B1 (en) 1999-12-24
DE69830032T2 (en) 2006-03-02
EP0908392A1 (en) 1999-04-14
FR2769295A1 (en) 1999-04-09
DE69830032D1 (en) 2005-06-09

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