EP2160341B1 - Packaging pouch - Google Patents

Packaging pouch Download PDF

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Publication number
EP2160341B1
EP2160341B1 EP08805565.2A EP08805565A EP2160341B1 EP 2160341 B1 EP2160341 B1 EP 2160341B1 EP 08805565 A EP08805565 A EP 08805565A EP 2160341 B1 EP2160341 B1 EP 2160341B1
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EP
European Patent Office
Prior art keywords
flap
packaging bag
front face
inner layer
bag according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08805565.2A
Other languages
German (de)
French (fr)
Other versions
EP2160341A2 (en
Inventor
Denis Guibert
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.)
3G
Original Assignee
3G
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Publication date
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Publication of EP2160341A2 publication Critical patent/EP2160341A2/en
Application granted granted Critical
Publication of EP2160341B1 publication Critical patent/EP2160341B1/en
Not-in-force legal-status Critical Current
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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/08—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession
    • B65D83/0805—Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession through an aperture in a wall
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827—Tear-lines provided in a wall portion
    • B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
    • B65D75/5838—Tear-lines provided in a wall portion for tearing out a portion of the wall combined with separate fixed tearing means, e.g. tabs
    • 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
    • B65D2575/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D2575/52—Details
    • B65D2575/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D2575/586—Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing

Definitions

  • the present invention relates to a packaging bag according to the preamble of claim 1, for containing and dispensing products, for example wet wipes substantially in the form of folded sheets, arranged in a stack inside the packaging bag but also products in the form of granules or powder.
  • products for example wet wipes substantially in the form of folded sheets, arranged in a stack inside the packaging bag but also products in the form of granules or powder.
  • the invention relates to the field of product packaging in general and more particularly to the packaging of impregnated supports.
  • the object of the present invention is to provide an improvement of such packaging bags to facilitate and improve the sealing of the flap vis-à-vis the envelope.
  • the invention proposes to add an upper bellows connecting the front and rear of the packaging bag and to secure the flap on the upper bellows through a cutout arranged on the front of the packaging bag.
  • the invention aims, according to its most general acceptance, a packaging bag according to claim 1.
  • the outer layers of the various elements correspond to the faces which form the outer envelope of the packaging bag.
  • the inner layers of these elements correspond to the face inside the packaging bag when it is assembled or, in the case of the flap 8, to the inward facing side of the bag.
  • the portion of the flap that is to be sealed is devoid of adhesive or the adhesive has been neutralized.
  • the cutting of the front face is continuous.
  • the cutting of the front face substantially represents three quarters of the width of the packaging bag.
  • the flap has two pre-cuts from the upper edge of the flap which define between them a central zone of the flap and in that the spacing of the pre-cuts substantially represents half the length of the zone of the flap. sealing the flap, preferably between two-thirds and three-fifths of the length of this sealing zone.
  • pre-cuts can be used as a tamper-proof system. Indeed, when the packaging bags are open, the pre-cuts are torn off and thus become easily detectable.
  • the pre-cuts are arranged on either side of the dispensing window when the flap is glued against the front face.
  • the flap has at least one adhesive edge provided with an adhesive coating which makes it able to peel off and re-stick several times.
  • the upper bellows and the upper edges of the flap and the front and rear faces are traversed by a European hole.
  • the figures 1 and 2 show a first exemplary embodiment of a packaging bag 2 according to the invention, formed from films making up the rear face 4, the front face 6, the flap 8, the lower bellows 10 and the upper bellows 12 of the bag of conditioning 2.
  • These films are multilayer and comprise a heat-sealable inner layer, for example polyethylene, a barrier intermediate layer, such as aluminum, and an outer layer of plastic material, such as PVC, polypropylene or printable PET (by screen printing gravure, flexography, etc.). According to this arrangement, only the inner layers are heat-sealable to each other.
  • a heat-sealable inner layer for example polyethylene
  • a barrier intermediate layer such as aluminum
  • an outer layer of plastic material such as PVC, polypropylene or printable PET (by screen printing gravure, flexography, etc.).
  • the rear faces 4 and front 6 are of substantially rectangular shape. They each have, in the position of use, two upper edges 4a, 6a and lower 4b, 6b rectilinear, and two side edges 4c, 6c slightly curved.
  • the inner layers of the side edges 4c, 6c of the rear faces 4 and front 6 are welded to each other.
  • the inner layers of the upper edges 4a, 6a of the rear faces 4 and front 6 are welded to the inner layer of the upper bellows 12.
  • the inner layers of the lower edges 4b, 6b of the rear faces 4 and front 6 are welded to the inner layer lower bellows 10.
  • the front face 6 has a distribution window 14 for successive gripping of a plurality of products stacked inside the packaging bag 2.
  • the dispensing window 14 has side edges 14c diverging towards the upper edge 6a of the face before 6 and connecting with the upper edges 14a by rounded.
  • the geometry of this distribution window 14 advantageously allows the flap 8 to be unstuck without damaging the appearance and shape of the front face 6 of the packaging bag 2.
  • the lateral edges 6c of the front face 6 are welded to the lateral edges 4c of the rear face 4.
  • the upper edges 6a, 4a and lower 6b, 4b of the front 6 and rear faces 4 are respectively welded to the inner layer of the upper bellows 12 and lower 10.
  • the function of the flap 8 is to cover the distribution window 14 of the front face 6 of the packaging bag 2. As such, and so as to ensure the tightness of the packaging, the flap 8 is coated with an adhesive or an adhesive repositionable, possibly colored, over most of it. This adhesive or adhesive allows a succession of openings and closures while maintaining a good seal around the dispensing window 14.
  • the adhesive has only a peripheral edge to the distribution window 14 in order, in particular, to reduce production costs.
  • the flap 8 also has a gripping tab 16 allowing it to be easily detached from the front face 6.
  • the flap 8 also comprises two pre-cuts 18, arranged perpendicularly to the upper edge 8a of the flap 8. These pre-cuts 18 extend from the lower edge to the weld limit of this flap 8.
  • the spacing of the pre-cuts 18 is determined so that, once the flap 8 is glued to the front face 6 of the packaging bag 2, the pre-cuts 18 are on either side of the distribution window 14. Thus, only the portion of the flap 8 contained between the two pre-cuts comes off the front face 6.
  • the spacing of these pre-cuts 18 is chosen so that the central portion of the flap 8 rests on a flat area of the packaging bag 2, even when it is very curved.
  • these pre-cuts are symmetrical with respect to the median axis of the flap and the spacing of the pre-cuts 18, at the weld of the flap 8 with the front face 6 or the upper bellows 12, corresponds to the two thirds of the length of this weld.
  • the ends of the weld are not subjected to the mechanical stresses associated with the opening and closing cycles of the flap 8. The risk of separation of the weld is therefore considerably lessened.
  • the pre-cuts 18 are not rectilinear and have some oblique or curved parts. It is thus possible to vary the dimensions of the peelable surface of the flap 8.
  • the figure 2 illustrates, more particularly, an exploded view of the packaging bag 2 of the figure 1 and wherein the front face 6 has a continuous cutout 22 located on the upper edge of the front face 6.
  • the cutout 22 could possibly be discontinuous.
  • this cutout 22 represents three quarters of the width of the packaging bag 2.
  • the thickness of this cutout 22 is slightly less than the thickness of the weld bead between the front face and the bellows, so that, despite the cutout 22, the front face is always sealed to the upper bellows 12.
  • the height of the upper edge 8a of the flap 8 corresponds to the height of the cutout 22 of the front face 6.
  • the portion of the flap that will be welded is free of adhesive or the adhesive has been neutralized or even , the adhesive does not prevent sealing.
  • the inner layer of the upper edge 8a of the flap 8 is welded to the inner layer of the upper bellows 12 through the cutout 22 of the front face 6.
  • the quality of the heat-sealing of the flap 8 with the upper bellows 12 is improved because the inner layers of the upper bellows 12 and the flap 8 are made of polyethylen or heat-sealable materials compatible.
  • the thickness of the weld bead is 7 millimeters
  • the thickness of the cutout 22 is 4 millimeters and, therefore, at the cutout 22, the upper edge 6a of the front face 6 is welded to the upper bellows to a thickness of 3 millimeters.
  • the lower bellows 10 and upper 12 have two components. However, it is also possible that these lower bellows 10 and upper 12 have an accordion structure and therefore have more than two components.
  • the blank 22 could be discontinuous (for example crenels, sawtooth, etc.) in order to distribute the tearing forces imposed on the flap 8 on the weld bead.
  • FIGS. 3a and 3b respectively represent the front and back views of a second embodiment similar to the first embodiment of figures 1 and 2 .
  • the upper edge 6a of the front face 6 has a thickness of 15 mm and the cutout 22 has a thickness of 8.5 mm, so as to allow the cutting of a European hole 24 on the packaging bag, without altering the sealing of the inner layer of the upper edge 8a of the flap 8.
  • this European hole 24 is positioned at the cutting line 22 of the upper edge 6a of the front face 6 so that said European hole 24 passes through the upper bellows 12 as well as the upper edges 8a, 6a, 4a flap 8 and front 6 and rear 4.
  • the assembly of the front 6 and rear 4 faces with the upper bellows 12 is preferably performed prior to the cutting of the European hole 24.
  • the upper edge 8a of the inner layer of the flap 8 which represents the sealable portion of said flap 8 has no adhesive that may affect the quality of the welding on the solder portion 6a of the front 6 of the bag it covers.
  • the invention is not limited to the embodiments described and shown. It is possible that the invention is for example made on a packaging bag 2 having no lower bellows 10. Another possible embodiment, although less advantageous, would be to place the cutout 22 no longer on the periphery but on the inner part of the front face 6. This embodiment could allow for savings of adhesives.
  • the outer layer of the upper edge 6a of the front face 6 could have a sealing zone 20 on which would be sealed a portion of the inner layer of the upper edge 8a of the flap 8.

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

Description

DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION

La présente invention concerne un sachet de conditionnement selon le préambule de la revendication 1, destiné à contenir et distribuer des produits, par exemple des lingettes humides se présentant sensiblement sous forme de feuilles pliées, disposés en pile à l'intérieur du sachet de conditionnement mais aussi des produits sous forme de granulés ou de poudre.The present invention relates to a packaging bag according to the preamble of claim 1, for containing and dispensing products, for example wet wipes substantially in the form of folded sheets, arranged in a stack inside the packaging bag but also products in the form of granules or powder.

L'invention se rapporte au domaine du conditionnement de produits en général et plus particulièrement au conditionnement des supports imprégnés.The invention relates to the field of product packaging in general and more particularly to the packaging of impregnated supports.

ETAT DE LA TECHNIQUE ANTERIEURESTATE OF THE PRIOR ART

On connaît dans l'état de la technique, le brevet européen n° 1 244 589 décrivant un sachet pour le conditionnement de lingettes présentant la forme générale d'une enveloppe avec une fenêtre de distribution recouverte par un rabat adhésif ou susceptible d'être recollé, dans lequel la fenêtre de distribution est surmontée par une bande de scellage transversale qui permet de solidariser une partie de la couche intérieure du rabat avec la surface extérieure de l'enveloppe, de manière à assurer un bon positionnement du rabat sur la fenêtre.It is known in the state of the art, European Patent No. 1,244,589 describing a bag for packaging wipes having the general shape of an envelope with a dispensing window covered by an adhesive flap or capable of being glued, wherein the dispensing window is surmounted by a transverse sealing strip which allows secure a portion of the inner layer of the flap with the outer surface of the envelope, so as to ensure proper positioning of the flap on the window.

Dans cette solution, la solidarisation du rabat avec la face avant du sachet de conditionnement lorsque celui-ci est plein reste problématique. En effet, le sachet de conditionnement se bombe lorsqu'il est rempli. Il est alors délicat de sceller le rabat sur la surface extérieure de l'enveloppe ou de la maintenir sceller lors des cycles d'ouverture et de fermeture.In this solution, the fastening of the flap with the front of the packaging bag when it is full remains problematic. Indeed, the packaging bag is bombed when filled. It is then difficult to seal the flap on the outer surface of the envelope or to keep it sealed during the opening and closing cycles.

Il est également connu de l'état de la technique le document WO 07/002430 qui décrit un sachet de conditionnement doté d'un rabat recouvrant une fenêtre de distribution et présentant un soufflet supérieur. Toutefois, le moyen de fixation du rabat vis-à-vis de l'enveloppe du sachet de conditionnement n'est pas détaillé et ne semble pas permettre d'améliorer la robustesse du produit. Notamment un tel rabat présente des risques d'arrachement.It is also known from the state of the art the document WO 07/002430 which describes a packaging bag with a flap covering a dispensing window and having a superior bellows. However, the fastening means of the flap vis-à-vis the envelope of the packaging bag is not detailed and does not seem to improve the robustness of the product. In particular, such a flap presents risks of tearing.

D'autre part, l'utilisation de films complexes multicouches possédant une couche interne thermosoudable (polyéthylène) et une couche externe imprimable (PVC, polypropylène, PET) complique également l'opération de scellage de la couche intérieure du rabat sur la surface extérieure de l'enveloppe et donne de mauvais résultats pouvant conduire, le cas échéant, jusqu'à l'arrachement du rabat lorsque les contraintes appliquées sur ce rabat sont trop importantes.On the other hand, the use of multilayer complex films having a heat-sealable inner layer (polyethylene) and a printable outer layer (PVC, polypropylene, PET) also complicates the sealing operation of the inner layer of the flap on the outer surface of the envelope and gives poor results that can lead, if necessary, until tearing of the flap when the stresses applied on this flap are too large.

EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION

Le but de la présente invention est de proposer une amélioration de tels sachets de conditionnement afin de faciliter et d'améliorer le scellage du rabat vis-à-vis de l'enveloppe. À cette fin, l'invention propose d'ajouter un soufflet supérieur reliant les faces avant et arrière du sachet de conditionnement et de solidariser le rabat sur ce soufflet supérieur au travers d'une découpe aménagée sur la face avant du sachet de conditionnement.The object of the present invention is to provide an improvement of such packaging bags to facilitate and improve the sealing of the flap vis-à-vis the envelope. To this end, the invention proposes to add an upper bellows connecting the front and rear of the packaging bag and to secure the flap on the upper bellows through a cutout arranged on the front of the packaging bag.

À ce titre, l'invention vise selon son acceptation la plus générale un sachet de conditionnement selon la revendication 1.As such, the invention aims, according to its most general acceptance, a packaging bag according to claim 1.

La présence d'un soufflet supérieur permet bien de faciliter l'opération de scellage du rabat avec la surface extérieure de l'enveloppe, même lorsque le sachet de conditionnement est rempli. Par ailleurs, cette configuration permet de sceller la couche intérieure du rabat avec la couche intérieure du soufflet supérieur, ce qui, de part, la composition des films complexes permet d'améliorer la robustesse de l'assemblage.The presence of a superior bellows makes it possible to facilitate the operation of sealing the flap with the outer surface of the envelope, even when the packaging bag is filled. Moreover, this configuration makes it possible to seal the inner layer of the flap with the inner layer of the upper bellows, which, on the other hand, the composition of the complex films makes it possible to improve the robustness of the assembly.

Il est à noter que les couches extérieures des différents éléments (le soufflet supérieur, la face avant, la face arrière ou le rabat) formant le sachet de conditionnement correspondent aux faces qui forment l'enveloppe externe du sachet de conditionnement. Par opposition, les couches intérieures de ces éléments correspondent à la face se trouvant à l'intérieur du sachet de conditionnement lorsque celui-ci est assemblé ou, dans le cas du rabat 8, à la face orientée vers l'intérieur du sachet.It should be noted that the outer layers of the various elements (the upper bellows, the front face, the rear face or the flap) forming the packaging bag correspond to the faces which form the outer envelope of the packaging bag. In contrast, the inner layers of these elements correspond to the face inside the packaging bag when it is assembled or, in the case of the flap 8, to the inward facing side of the bag.

Selon des modes de réalisation particuliers :

  • la partie de la couche intérieure du bord supérieur du rabat destinée à être scellée est recouverte d'un vernis de scellage ;
  • la partie de la couche intérieure du bord supérieur du rabat destinée à être scellée est dépourvue de tout moyen d'adhésif.
According to particular embodiments:
  • the portion of the inner layer of the upper edge of the flap to be sealed is covered with a sealing varnish;
  • the portion of the inner layer of the top edge of the flap to be sealed is devoid of any adhesive means.

Dans ces variantes, la partie du rabat qui doit être scellé est dépourvue d'adhésif ou l'adhésif a été neutralisé. En soudant ainsi les couches intérieures des films multicouches, on améliore sensiblement la qualité de soudure du rabat avec l'enveloppe. Le sachet de conditionnement ainsi obtenu présente donc également moins de risques d'arrachement du rabat.In these variants, the portion of the flap that is to be sealed is devoid of adhesive or the adhesive has been neutralized. By thus welding the inner layers of the multilayer films, the weld quality of the flap with the envelope is substantially improved. The packaging bag thus obtained therefore also has less risk of tearing off the flap.

De préférence, la découpe de la face avant est continue.Preferably, the cutting of the front face is continuous.

Avantageusement, la découpe de la face avant représente sensiblement les trois quarts de la largeur du sachet de conditionnement.Advantageously, the cutting of the front face substantially represents three quarters of the width of the packaging bag.

Selon un mode réalisation avantageux, le rabat présente deux pré-découpes issues du bord supérieur du rabat qui définissent entre elles une zone centrale du rabat et en ce que l'écartement des pré-découpes représente sensiblement la moitié de la longueur de la zone de scellage du rabat, de préférence entre deux tiers et trois cinquième de la longueur de cette zone de scellage.According to an advantageous embodiment, the flap has two pre-cuts from the upper edge of the flap which define between them a central zone of the flap and in that the spacing of the pre-cuts substantially represents half the length of the zone of the flap. sealing the flap, preferably between two-thirds and three-fifths of the length of this sealing zone.

Ces pré-découpes peuvent être utilisées en tant que système d'inviolabilité. En effet, lorsque les sachets de conditionnement sont ouverts, les pré-découpes sont arrachées et deviennent donc aisément détectables.These pre-cuts can be used as a tamper-proof system. Indeed, when the packaging bags are open, the pre-cuts are torn off and thus become easily detectable.

De préférence, les pré-découpes sont disposées de part et d'autre de la fenêtre de distribution lorsque le rabat est collé contre la face avant.Preferably, the pre-cuts are arranged on either side of the dispensing window when the flap is glued against the front face.

Avantageusement, le rabat présente au moins une bordure adhésive munie d'un revêtement adhésif qui le rend capable de se décoller et de se recoller plusieurs fois.Advantageously, the flap has at least one adhesive edge provided with an adhesive coating which makes it able to peel off and re-stick several times.

De préférence, le soufflet supérieur et les bords supérieurs du rabat et des faces avant et arrière sont traversées par un trou européen.Preferably, the upper bellows and the upper edges of the flap and the front and rear faces are traversed by a European hole.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

D'autres caractéristiques et avantages de l'invention ressortiront à la lecture qui suit d'exemples de réalisation détaillés, en référence aux figures qui représentent respectivement :

  • la figure 1, une vue en perspective d'un sachet de conditionnement selon l'invention prêt à l'emploi ;
  • la figure 2, une vue éclatée de l'exemple de réalisation du sachet de conditionnement de la figure 1 ;
  • les figures 3a et 3b, des vues de face et de derrière d'un exemple de réalisation du sachet de conditionnement selon la figure 3 et présentant un trou européen ;
  • la figure 4, un exemple de réalisation d'un sachet de conditionnement qui ne fait pas partie de la présente invention.
Other features and advantages of the invention will emerge on reading the following detailed examples of embodiment, with reference to the figures which respectively represent:
  • the figure 1 , a perspective view of a packaging bag according to the invention ready for use;
  • the figure 2 , an exploded view of the embodiment of the packaging bag of the figure 1 ;
  • the Figures 3a and 3b , front and rear views of an embodiment of the packaging bag according to the figure 3 and presenting a European hole;
  • the figure 4 , an embodiment of a packaging bag which does not form part of the present invention.

DESCRIPTION DETAILLEE D'UN MODE DE REALISATIONDETAILED DESCRIPTION OF AN EMBODIMENT

Les figures 1 et 2 présentent un premier exemple de réalisation d'un sachet de conditionnement 2 selon l'invention, formé à partir de films composant la face arrière 4, la face avant 6, le rabat 8, le soufflet inférieur 10 et le soufflet supérieur 12 du sachet de conditionnement 2.The figures 1 and 2 show a first exemplary embodiment of a packaging bag 2 according to the invention, formed from films making up the rear face 4, the front face 6, the flap 8, the lower bellows 10 and the upper bellows 12 of the bag of conditioning 2.

Ces films sont multicouches et comportent une couche intérieure thermosoudable, par exemple du polyéthylène, une couche intermédiaire barrière, telle que de l'aluminium, et une couche extérieure en matériau plastique, tel que du PVC, du polypropylène ou du PET imprimable (par sérigraphie, héliogravure, flexographie, etc.). Selon cette disposition, seules les couches intérieures sont thermosoudables les unes aux autres.These films are multilayer and comprise a heat-sealable inner layer, for example polyethylene, a barrier intermediate layer, such as aluminum, and an outer layer of plastic material, such as PVC, polypropylene or printable PET (by screen printing gravure, flexography, etc.). According to this arrangement, only the inner layers are heat-sealable to each other.

Les faces arrière 4 et avant 6 sont de forme sensiblement rectangulaire. Elles présentent chacune, en position d'utilisation, deux bords supérieur 4a, 6a et inférieur 4b, 6b rectilignes, ainsi que deux bords latéraux 4c, 6c faiblement courbés. Les couches intérieures des bords latéraux 4c, 6c des faces arrière 4 et avant 6 sont soudées l'une à l'autre. Les couches intérieures des bords supérieurs 4a ,6a des faces arrière 4 et avant 6 sont soudées sur la couche intérieure du soufflet supérieur 12. Et les couches intérieures des bords inférieurs 4b, 6b des faces arrière 4 et avant 6 sont soudées sur la couche intérieure du soufflet inférieur 10.The rear faces 4 and front 6 are of substantially rectangular shape. They each have, in the position of use, two upper edges 4a, 6a and lower 4b, 6b rectilinear, and two side edges 4c, 6c slightly curved. The inner layers of the side edges 4c, 6c of the rear faces 4 and front 6 are welded to each other. The inner layers of the upper edges 4a, 6a of the rear faces 4 and front 6 are welded to the inner layer of the upper bellows 12. And the inner layers of the lower edges 4b, 6b of the rear faces 4 and front 6 are welded to the inner layer lower bellows 10.

La face avant 6 comporte une fenêtre de distribution 14 permettant la préhension successive d'une pluralité de produits empilés à l'intérieur du sachet de conditionnement 2. La fenêtre de distribution 14 présente des arêtes latérales 14c divergeant vers le bord supérieur 6a de la face avant 6 et se raccordant avec les arêtes supérieures 14a par des arrondis. La géométrie de cette fenêtre de distribution 14 permet avantageusement de décoller le rabat 8 sans endommager l'aspect et la forme de la face avant 6 du sachet de conditionnement 2.The front face 6 has a distribution window 14 for successive gripping of a plurality of products stacked inside the packaging bag 2. The dispensing window 14 has side edges 14c diverging towards the upper edge 6a of the face before 6 and connecting with the upper edges 14a by rounded. The geometry of this distribution window 14 advantageously allows the flap 8 to be unstuck without damaging the appearance and shape of the front face 6 of the packaging bag 2.

Les bords latéraux 6c de la face avant 6 sont soudés aux bords latéraux 4c de la face arrière 4. Les bords supérieurs 6a,4a et inférieurs 6b,4b des faces avant 6 et arrière 4 sont soudés respectivement sur la couche intérieure des soufflets supérieur 12 et inférieur 10.The lateral edges 6c of the front face 6 are welded to the lateral edges 4c of the rear face 4. The upper edges 6a, 4a and lower 6b, 4b of the front 6 and rear faces 4 are respectively welded to the inner layer of the upper bellows 12 and lower 10.

La fonction du rabat 8 est de recouvrir la fenêtre de distribution 14 de la face avant 6 du sachet de conditionnement 2. À ce titre, et de façon à assurer l'étanchéité du conditionnement, le rabat 8 est revêtu d'une colle ou d'un adhésif repositionnable, éventuellement coloré, sur sa plus grande partie. Cette colle ou cet adhésif permettent de procéder à une succession d'ouvertures et de fermetures tout en conservant une bonne étanchéité autour de la fenêtre de distribution 14.The function of the flap 8 is to cover the distribution window 14 of the front face 6 of the packaging bag 2. As such, and so as to ensure the tightness of the packaging, the flap 8 is coated with an adhesive or an adhesive repositionable, possibly colored, over most of it. This adhesive or adhesive allows a succession of openings and closures while maintaining a good seal around the dispensing window 14.

Selon un autre mode de réalisation, la colle ne revêt qu'une bordure périphérique à la fenêtre de distribution 14 afin, notamment, de réduire les coûts de production. De préférence, le rabat 8 dispose également d'une languette de préhension 16 lui permettant d'être facilement décollé de la face avant 6.According to another embodiment, the adhesive has only a peripheral edge to the distribution window 14 in order, in particular, to reduce production costs. Preferably, the flap 8 also has a gripping tab 16 allowing it to be easily detached from the front face 6.

Dans ce premier exemple de réalisation, le rabat 8 comporte également deux pré-découpes 18, disposées perpendiculairement au bord supérieur 8a du rabat 8. Ces pré-découpes 18 s'étendent du bord inférieur à la limite de soudure de ce rabat 8.In this first exemplary embodiment, the flap 8 also comprises two pre-cuts 18, arranged perpendicularly to the upper edge 8a of the flap 8. These pre-cuts 18 extend from the lower edge to the weld limit of this flap 8.

Avantageusement, l'espacement des pré-découpes 18 est déterminé de façon à ce que, une fois le rabat 8 collé à la face avant 6 du sachet de conditionnement 2, les pré-découpes 18 se trouvent de part et d'autre de la fenêtre de distribution 14. Ainsi, seule la partie du rabat 8 contenue entre les deux pré-découpes se décolle de la face avant 6. L'espacement de ces pré-découpes 18 est donc choisi de sorte que la partie centrale du rabat 8 repose sur une zone plane du sachet de conditionnement 2, même lorsque celui-ci est très bombé.Advantageously, the spacing of the pre-cuts 18 is determined so that, once the flap 8 is glued to the front face 6 of the packaging bag 2, the pre-cuts 18 are on either side of the distribution window 14. Thus, only the portion of the flap 8 contained between the two pre-cuts comes off the front face 6. The spacing of these pre-cuts 18 is chosen so that the central portion of the flap 8 rests on a flat area of the packaging bag 2, even when it is very curved.

De préférence également, ces pré-découpes sont symétriques par rapport à l'axe médian du rabat et l'espacement des pré-découpes 18, au niveau de la soudure du rabat 8 avec la face avant 6 ou le soufflet supérieur 12, correspond aux deux tiers de la longueur de cette soudure. Ainsi, les extrémités de la soudure ne sont pas soumises aux contraintes mécaniques liées aux cycles d'ouverture et de fermeture du rabat 8. Le risque de décollement de la soudure est donc considérablement amoindri.Also preferably, these pre-cuts are symmetrical with respect to the median axis of the flap and the spacing of the pre-cuts 18, at the weld of the flap 8 with the front face 6 or the upper bellows 12, corresponds to the two thirds of the length of this weld. Thus, the ends of the weld are not subjected to the mechanical stresses associated with the opening and closing cycles of the flap 8. The risk of separation of the weld is therefore considerably lessened.

Selon un mode de réalisation particulier, les pré-découpes 18 ne sont pas rectilignes et présentent certaines parties obliques ou courbes. Il est ainsi possible de varier les dimensions de la surface décollable du rabat 8.According to a particular embodiment, the pre-cuts 18 are not rectilinear and have some oblique or curved parts. It is thus possible to vary the dimensions of the peelable surface of the flap 8.

La figure 2 illustre, plus particulièrement, une vue éclatée du sachet de conditionnement 2 de la figure 1 et dans lequel la face avant 6 présente une découpe 22 continue, située sur le bord supérieur de la face avant 6. De façon alternative, la découpe 22 pourrait éventuellement être discontinue.The figure 2 illustrates, more particularly, an exploded view of the packaging bag 2 of the figure 1 and wherein the front face 6 has a continuous cutout 22 located on the upper edge of the front face 6. Alternatively, the cutout 22 could possibly be discontinuous.

Idéalement, cette découpe 22 représente les trois quarts de la largeur du sachet de conditionnement 2. L'épaisseur de cette découpe 22 est légèrement inférieure à l'épaisseur du cordon de soudure entre la face avant et le soufflet, de manière à ce que, malgré la découpe 22, la face avant soit toujours scellée sur le soufflet supérieur 12.Ideally, this cutout 22 represents three quarters of the width of the packaging bag 2. The thickness of this cutout 22 is slightly less than the thickness of the weld bead between the front face and the bellows, so that, despite the cutout 22, the front face is always sealed to the upper bellows 12.

La hauteur du bord supérieur 8a du rabat 8 correspond à la hauteur de la découpe 22 de la face avant 6. Dans cette variante, la partie du rabat qui va être soudée est dépourvue d'adhésif ou l'adhésif a été neutralisé ou bien encore, l'adhésif n'empêche pas le scellage. Ainsi, la couche intérieure du bord supérieur 8a du rabat 8 est soudée à la couche intérieure du soufflet supérieur 12 à travers la découpe 22 de la face avant 6.The height of the upper edge 8a of the flap 8 corresponds to the height of the cutout 22 of the front face 6. In this variant, the portion of the flap that will be welded is free of adhesive or the adhesive has been neutralized or even , the adhesive does not prevent sealing. Thus, the inner layer of the upper edge 8a of the flap 8 is welded to the inner layer of the upper bellows 12 through the cutout 22 of the front face 6.

La qualité du thermosoudage du rabat 8 avec le soufflet supérieur 12 est améliorée du fait que les couches intérieures du soufflet supérieur 12 et du rabat 8 sont en polyéthylènes ou en matériaux thermosoudables compatibles.The quality of the heat-sealing of the flap 8 with the upper bellows 12 is improved because the inner layers of the upper bellows 12 and the flap 8 are made of polyethylen or heat-sealable materials compatible.

Dans cet exemple de réalisation, l'épaisseur du cordon de soudure est de 7 millimètres, l'épaisseur de la découpe 22 est de 4 millimètres et, par conséquent, au niveau de la découpe 22, le bord supérieur 6a de la face avant 6 est soudé au soufflet supérieur sur une épaisseur de 3 millimètres.In this embodiment, the thickness of the weld bead is 7 millimeters, the thickness of the cutout 22 is 4 millimeters and, therefore, at the cutout 22, the upper edge 6a of the front face 6 is welded to the upper bellows to a thickness of 3 millimeters.

D'autre part, selon cet exemple de réalisation, les soufflets inférieurs 10 et supérieurs 12 présentent deux volets. Toutefois, il est également possible que ces soufflets inférieurs 10 et supérieurs 12 présentent une structure en accordéon et comportent donc plus de deux volets.On the other hand, according to this embodiment, the lower bellows 10 and upper 12 have two components. However, it is also possible that these lower bellows 10 and upper 12 have an accordion structure and therefore have more than two components.

Selon un mode de réalisation particulier, la découpe 22 pourrait être discontinue (par exemple en créneaux, en dents-de-scie, etc.) afin de répartir les efforts d'arrachement imposés au rabat 8 sur le cordon de soudure.According to a particular embodiment, the blank 22 could be discontinuous (for example crenels, sawtooth, etc.) in order to distribute the tearing forces imposed on the flap 8 on the weld bead.

Les figures 3a et 3b représentent respectivement les vues de face et de derrière d'un deuxième exemple de réalisation proche du premier exemple de réalisation des figures 1 et 2.The Figures 3a and 3b respectively represent the front and back views of a second embodiment similar to the first embodiment of figures 1 and 2 .

Toutefois, dans ce deuxième exemple de réalisation, le bord supérieur 6a de la face avant 6 présente une épaisseur de 15 mm et la découpe 22 une épaisseur de 8,5 mm, de sorte à permettre la découpe d'un trou européen 24 sur le sachet de conditionnement, sans altérer le scellage de la couche intérieure du bord supérieur 8a du rabat 8.However, in this second exemplary embodiment, the upper edge 6a of the front face 6 has a thickness of 15 mm and the cutout 22 has a thickness of 8.5 mm, so as to allow the cutting of a European hole 24 on the packaging bag, without altering the sealing of the inner layer of the upper edge 8a of the flap 8.

De préférence, ce trou européen 24 est positionné au niveau de la ligne de découpe 22 du bord supérieur 6a de la de la face avant 6 de sorte que ledit trou européen 24 traverse le soufflet supérieur 12 ainsi que les bords supérieurs 8a,6a,4a du rabat 8 et des faces avant 6 et arrière 4.Preferably, this European hole 24 is positioned at the cutting line 22 of the upper edge 6a of the front face 6 so that said European hole 24 passes through the upper bellows 12 as well as the upper edges 8a, 6a, 4a flap 8 and front 6 and rear 4.

L'assemblage des faces avant 6 et arrière 4 avec le soufflet supérieur 12 est de préférence réalisé préalablement au découpage du trou européen 24.The assembly of the front 6 and rear 4 faces with the upper bellows 12 is preferably performed prior to the cutting of the European hole 24.

D'autre part, il est à noter que dans cet exemple de réalisation, la couche intérieure du bord supérieur 8a du rabat 8 est également partiellement soudée sur la face avant 6. À ce titre, le bord supérieur 8a du rabat 8, qui représente la partie de scellage de ce rabat 8 sur la surface de l'enveloppe du sachet de conditionnement peut alternativement être :

  • dépourvue d'adhésif repositionnable ;
  • pourvue d'un adhésif repositionnable dont les propriétés ne détériore pas la qualité du scellage ;
  • pourvu d'un adhésif repositionnable lui-même recouvert d'un vernis de scellage qui permet de neutraliser la colle ou l'adhésif repositionnable disposé sur la couche intérieure du rabat 8. Ce vernis de scellage peut être un vernis à base de matière thermo-scellable permettant de sceller efficacement la couche de polyéthylène des films complexes multicouches sur la face avant 6. On réduit ainsi les risques d'arrachement du rabat.
On the other hand, it should be noted that in this embodiment, the inner layer of the upper edge 8a of the flap 8 is also partially welded to the front face 6. As such, the upper edge 8a of the flap 8, which represents the sealing part of this flap 8 on the surface of the envelope of the packaging bag may alternatively be:
  • devoid of repositionable adhesive;
  • provided with a repositionable adhesive whose properties do not deteriorate the quality of the seal;
  • provided with a repositionable adhesive itself covered with a sealing varnish that neutralizes the adhesive or repositionable adhesive disposed on the inner layer of the flap 8. This sealing varnish can be a varnish based on heat-sealable material for effectively sealing the polyethylene layer multilayer complex films on the front face 6. This reduces the risk of tearing flap.

Ainsi, de la même façon que précédemment, le bord supérieur 8a de la couche intérieure du rabat 8 qui représente la portion scellable dudit rabat 8 ne présente pas d'adhésif risquant d'altérer la qualité du soudage sur la portion de soudure 6a de la face avant 6 du sachet qu'il recouvre.Thus, in the same way as above, the upper edge 8a of the inner layer of the flap 8 which represents the sealable portion of said flap 8 has no adhesive that may affect the quality of the welding on the solder portion 6a of the front 6 of the bag it covers.

L'invention n'est pas limitée aux exemples de réalisation décrits et représentés. Il est possible que l'invention soit par exemple réalisée sur un sachet de conditionnement 2 ne présentant pas de soufflet inférieur 10. Un autre exemple de réalisation possible, bien que moins avantageux, consisterait à placer la découpe 22 non plus sur le pourtour mais sur la partie intérieure de la face avant 6. Ce mode de réalisation pourrait permettre de réaliser des économies d'adhésifs.The invention is not limited to the embodiments described and shown. It is possible that the invention is for example made on a packaging bag 2 having no lower bellows 10. Another possible embodiment, although less advantageous, would be to place the cutout 22 no longer on the periphery but on the inner part of the front face 6. This embodiment could allow for savings of adhesives.

Par ailleurs, selon l'exemple de la figure 4 qui ne fait pas partie de la présente invention, la couche extérieure du bord supérieur 6a de la face avant 6 pourrait présenter une zone de scellage 20 sur laquelle serait scellée une partie de la couche intérieure du bord supérieur 8a du rabat 8.Moreover, according to the example of figure 4 which does not form part of the present invention, the outer layer of the upper edge 6a of the front face 6 could have a sealing zone 20 on which would be sealed a portion of the inner layer of the upper edge 8a of the flap 8.

Claims (9)

  1. Packaging bag (2) having the general shape of an envelope comprising a rear face (4), a front face (6), an upper gusset (12) and a flap (8), the said upper gusset (12), the flap (8) and the front face (6) being integral, the front face (6) being provided with a dispensing opening which can be closed by the said flap (8), characterized in that the upper edges (4a, 6a) of the rear (4) and front (6) faces are sealed on the inner layer of an upper gusset (12), and in that the upper edge (6a) of the front face (6) has at least one cutout (22) through which at least a part of the inner layer of the upper edge (8a) of the flap (8) is sealed on a part of the inner layer of the upper gusset (12).
  2. Packaging bag according to Claim 1, in which the part of the inner layer of the upper edge (8a) of the flap (8) intended to be sealed is coated with a sealing varnish.
  3. Packaging bag according to Claim 1, in which the part of the inner layer of the upper edge (8a) of the flap (8) intended to be sealed is free of any adhesive means.
  4. Packaging bag according to any one of Claims 1 to 3, in which the cutout (22) in the front face (6) is continuous.
  5. Packaging bag according to any one of Claims 1 to 4, in which the cutout (22) in the front face (6) substantially represents three quarters of the width of the packaging bag (2).
  6. Packaging bag according to any one of Claims 1 to 5, in which the flap (8) has two pre-cutouts (18) emanating from the upper edge (8a) of the flap (8) which define between them a central area of the flap (8), and in which the spacing between the pre-cutouts (18) substantially represents half the length of the sealing area of the flap (8), preferably between two thirds and three fifths of the length of this sealing area.
  7. Packaging bag according to Claim 6, in which the pre-cutouts (18) are positioned on either side of the dispensing opening (14) when the flap (8) is stuck against the front face (6).
  8. Packaging bag according to at least one of Claims 1 to 7, in which the flap (8) has at least one adhesive rim provided with an adhesive coating which makes it capable of being peeled off and of being stuck back several times.
  9. Packaging bag according to at least one of Claims 1 to 8, in which the upper gusset (12) and the upper edges (8a, 6a, 4a) of the flap (8) and of the front (6) and rear (4) faces are traversed by a European hole (24).
EP08805565.2A 2007-05-10 2008-05-13 Packaging pouch Not-in-force EP2160341B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0754972A FR2915963B1 (en) 2007-05-10 2007-05-10 PACKAGING PACK
PCT/FR2008/000661 WO2008152247A2 (en) 2007-05-10 2008-05-13 Packaging pouch

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EP2160341A2 EP2160341A2 (en) 2010-03-10
EP2160341B1 true EP2160341B1 (en) 2015-01-07

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US (1) US20110058755A1 (en)
EP (1) EP2160341B1 (en)
JP (1) JP5166516B2 (en)
CN (1) CN103298711B (en)
BR (1) BRPI0810316A2 (en)
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FR (1) FR2915963B1 (en)
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ES2540677T3 (en) 2015-07-10
EP2160341A2 (en) 2010-03-10
CN103298711A (en) 2013-09-11
FR2915963A1 (en) 2008-11-14
US20110058755A1 (en) 2011-03-10
CN103298711B (en) 2015-03-18
WO2008152247A2 (en) 2008-12-18
JP2010526731A (en) 2010-08-05
JP5166516B2 (en) 2013-03-21
FR2915963B1 (en) 2009-07-17
BRPI0810316A2 (en) 2014-10-21
WO2008152247A3 (en) 2009-02-12

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FR2829472A1 (en) Packaging for bulk products comprises sachet with closing tab whose two flaps, separated by folding line, are fixed to sachet walls, folding line having two cut-outs enabling access to sachet opening

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