EP1373083B1 - Packaging with a shell closing system and production method therefor - Google Patents
Packaging with a shell closing system and production method therefor Download PDFInfo
- Publication number
- EP1373083B1 EP1373083B1 EP02722335A EP02722335A EP1373083B1 EP 1373083 B1 EP1373083 B1 EP 1373083B1 EP 02722335 A EP02722335 A EP 02722335A EP 02722335 A EP02722335 A EP 02722335A EP 1373083 B1 EP1373083 B1 EP 1373083B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- packaging
- shell
- fixed shell
- moveable
- sheet
- 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
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Classifications
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- 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
- B65D33/30—Deformable or resilient metal or like strips or bands
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- 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
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
- B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
- B65D47/0804—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage
- B65D47/0809—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage and elastically biased towards both the open and the closed positions
Definitions
- the invention relates to a new closure system, suitable for packaging type bags, especially plastic. These packages or bags may be "Doypack” or so-called “three welds” bags.
- GB-A-826,784 describes a bag which is obtained by successive folding of a plastic film. This film is folded a first time along a straight line with a central orifice, two V-weld zones are applied, and the film is folded on itself. The three free sides are welded, as well as a part of the fourth side carrying the bellows with the V-welds. The presence of the opening at the bottom of the bellows, as well as the presence of the two V-welds and the partial welding of the side of the opening, would allow proper operation of the valve formed by the central orifice.
- FR-A-2,711,115 describes an inflatable bag with a valve.
- This bag is obtained by forming two parallel welds in a film folded on itself, which is then folded back on itself, in a manner similar to that of GB-A-826 784 . In this case, however, the doubly folded film on itself is welded so as to leave the folded edges of the film accessible from the outside.
- the invention described in claim 1 makes it possible to remedy the defects of the systems of the prior art.
- the invention provides a package comprising a shutter for easy and unlimited opening.
- the invention provides a package comprising a shutter, the shutter comprising a fixed shell and a movable shell articulated to the fixed shell by means of pivots, the movable shell having means for reversing the bending formed of at least one protuberance of the movable shell beyond a pivot.
- the mobile shell comprises two rigid articulated parts and the fixed part is flexible.
- the fixed shell and the movable shell are placed vis-a-vis.
- the fixed shell and the movable shell each have a shutter face, these shutter faces being offset.
- the fixed shell is concave.
- the fixed shell is bent.
- the fixed shell is formed of an angular sector of the cylinder.
- the movable shell has a curvature substantially identical to the curvature of the fixed shell.
- the mobile shell has two protuberances in the form of strips.
- the shutter is formed in one piece.
- the fixed shell is made in a sheet of the package.
- the mobile shell is made in a sheet of the package.
- it comprises two sheets, the fixed shell being secured to one side of a first sheet and the movable shell is secured to one side of a second sheet.
- the mobile shell has two equilibrium positions and that the developed length of the fixed shell is between D and ⁇ * D / 2, and preferably between 65 * D / 8 and ⁇ * D / 2, where D is the distance between the pivots.
- the distance between the pivots is between 2 mm and the width of the package, and preferably between 5 and 50 mm.
- the pivots are ensured by the assembly of sheets of the packaging.
- the pivots are provided by the shutter itself.
- the pivots have a V shape.
- the articulation of the mobile shell is ensured by a sheet of the package.
- the mobile shell is formed of a part comprising a flexible part articulating the rigid parts.
- the shutter further has a sealed and tear-off seal blocking the flow between the fixed shell and the movable shell.
- the assembly is made by welding.
- the assembly is made by gluing.
- the fixed shell is rendered concave after being secured to one of the two sheets.
- the invention also relates to a method of opening or closing a package according to the invention, comprising a step of applying a force on the flexion reversal means according to a line of action not passing through one of the pivots.
- Figure 1 shows a package 1 according to a first embodiment of the invention having a shutter 2.
- the movable shell has a rigidity less than the rigidity of the fixed shell.
- the shutter 2 comprises a concave fixed shell 3 vis-à-vis a movable shell 4.
- the movable shell is articulated along two parallel pivots 5 and 6 on the fixed shell.
- the movable shell advantageously has, according to a variant described below, two actuating protuberances 7 and 8 extending beyond the pivots.
- the package also comprises two sheets 9 and 10 vis-à-vis, assembled to form a reservoir. These sheets are tightly assembled on their periphery by a weld 11.
- These sheets are made of conventional material in the art, including plastic such as PET, OPA, OPP, PA, PE, PP or still aluminum foil etc. These sheets may be used in monolayer or multilayer structure, complexed or coextruded, for example. These two sheets are in particular semi-rigid, in that they are capable of being deformed to accept the expansion of the bag while providing general support to the bag.
- the thickness of these two sheets is conventional in the art, for example a thickness between 30 and 1000 microns, and preferably between 60 and 250 microns.
- packages are suitable in all technical fields, including food, chemistry, detergents, cosmetics; for small liquids, powders, granules or solids (eg candies), or even gases.
- FIGS 2 and 3 show in perspective the shells 3 and 4 of the shutter 2 of Figure 1.
- the shell 3 is a fixed and concave shell having two edges 31 and 32 and a sealing face 33.
- the concave shell 3 can be obtained from an angular sector of a cylinder or by forming from a flat shape for example.
- the shell 4 is a flexible and mobile shell, initially concave under the effect of the pivots and the fixed hull; indeed the length developed between pivots 1 of the movable shell is greater than the distance d between joints.
- the shell 4 has two edges 41 and 42.
- the shell 4 has a closing face 43 movable, intended to come into contact or to deviate from the face 33.
- the application of a force, whose line of action does not pass through the pins 5 and 6, on one of the protuberances 7 or 8, modifies the curvature of the closure face 43 of the mobile hull 4.
- These protuberances preferably have a band shape and can thus provide a substantial useful area, and can easily be achieved during the formation of the shell 4.
- the protuberances may be only pins protruding from the pivots.
- the flexural reversal means could also be in the form of these protuberances but be in the form of protuberances or tongues that can be manipulated by the user, as will be described later.
- Figures 4 and 5 show in section along a normal section to an axis of the shells, the shutter 2, respectively in closed and open position.
- the shutter is observed in the closed position.
- the movable shell 4 is then flexed in a first stable position.
- the closing face 43 of the mobile shell is held together against (it "marries") the shutter face 33 of the fixed shell and thus blocks the passage of the opening of the package whose contents is gaseous, liquid or solid.
- the edges 41 and 42 of the movable shell are articulated along two pivots 5 and 6 to the edges 31 and 32 of the fixed shell respectively.
- the rigidity of the fixed shell 3 keeps the edges 41 and 42 at a spacing less than the length of material of the mobile shell which joins them.
- the shutter is observed in the open position.
- the mobile hull is then flexed in a second stable position.
- the closure face 43 of the movable shell is spaced from the closure face 33 of the fixed shell and thus releases the passage of the opening of the package.
- the rigidity of the shell 3 makes it possible to maintain the edges 41 and 42 at a spacing smaller than the length of material of the mobile shell which joins them.
- the mobile shell is constrained in the stable opening position.
- the shell 4 is then in a second stable position, in which its curvature is inverted with respect to the closed position.
- protuberances 7 and 8 are secured respectively to the shells 3 and 4.
- These tongues may be for example welded or glued on the shells or on areas of the sheets 9 and 10 secured to the shells. Just exert effort on the tabs, as represented by the arrows, to open the shutter.
- These tongues are preferably placed at the middle part of the shells.
- Figure 8 shows another variant, not part of the invention, bending reversal means.
- Parts 15 and 16 formed in the sheets 10 and 9 respectively protrude from the shells of the shutter. Thus, it is sufficient to exert a force on the parts 15 and 16 to open the shutter.
- the transition from one stable position to another can also be obtained by pressing the faces 33 and 43 of the shells against each other for closure. To proceed with the opening, it is sufficient to separate these same faces, for example by introducing an object between these faces, such as a straw.
- the pivots 5 and 6 are preferably flexible to allow relative pivoting of the edges 31 and 32 with respect to the edges 41 and 42 respectively.
- This junction can be achieved by means of an adhesive seal or a welding of the shells at this level.
- the junction can also be made by joining the shells 2 and 3 respectively to two sides of a package, assembled to one another to form the pivots between the shells. Methods of manufacturing the package will be detailed later.
- the pivots may have, at their weld, a V shape.
- the shutter is made in one piece and comprises a shell mobile and a fixed hull.
- the mobile shell and the fixed shell are made in one piece.
- Such a part may in particular be obtained by molding or extrusion.
- Fig. 9 shows an exemplary shutter according to this embodiment of a package.
- This shutter comprises a fixed shell 3 and a movable shell 4 integrally formed in one and the same piece. It is thus possible to obtain a monoblock shutter in one piece.
- the fixed hull and the movable hull can pivot relative to each other about the pivots 5 and 6.
- the fixed hull has an upper band and a lower band surrounding a moving hull band.
- the movable shell is wedged between the upper part and the lower part of the fixed shell.
- the fixed hull and the hull can thus be offset relative to each other without overlapping.
- the fixed hull has a number of bands greater than that of the hull, the fixed hull has a rigidity greater than the hull.
- a first sheet is secured to the rear portion (represented by the hatching in the figure) of the movable shell 4.
- a second sheet is secured to the rear portion of the fixed shell 3.
- the shutter is thus placed inside the packaging.
- the shutter is shown in the open position in FIG. 9; the mobile hull is indeed removed from the fixed hull.
- To close the shutter simply press the mobile shell towards the fixed hull.
- the sheets secured respectively to the movable shell and the fixed shell come into contact to prevent any flow of fluid.
- Such a shutter can be obtained from a plate in which two longitudinal cuts are made to delimit the mobile shell and the fixed shell. We can then give a concavity to the shells by forming for example.
- the shutter of the variant shown in FIG. 9 is formed in one piece, but it is also possible to envisage making this shutter in the form of several mobile and fixed shells. independent. It is also possible that the mobile hull or the fixed hull has a different number of parts.
- the shutter shown in FIG. 9 also has, in accordance with the invention, protuberances 7 and 8, but other flexural inversion means of the moving part can also be used, outside the scope of the invention, such as those shown in Figures 7 and 8.
- Figures 10 and 11 show in top view another embodiment of a package according to the invention.
- the movable shell has two articulated parts.
- the movable shell preferably has a hinge 17 substantially towards its middle.
- the fixed shell is preferably flexible and the two parts are preferably rigid.
- the mobile shell can thus be folded against the fixed shell to close the shutter.
- the pivots are spaced apart.
- the two parts of the movable shell pivot around the hinge, and the fixed hull flexes to allow the spacing of the pivots.
- the mobile hull and the fixed hull are respectively integral with the sheets 9 and 10.
- the hinge can be made in the hull itself or by means of the sheet 9.
- a mobile shell with a rigidity greater than a value Rmin It is preferable to use a mobile shell with a rigidity greater than a value Rmin.
- the movable shell has only few stable positions of sag.
- the hull then has the tendency to return of itself to one of the closed or open positions when it is separated from one of them. In addition it can then exert a closing pressure on the sealing face 33 ensuring a good sealing of the shutter.
- a mobile shell of a rigidity less than a Rmax value is preferably used.
- the open position of the shutter then has an optimum passage section, and the closed position of the shutter also has a suitable seal.
- the rigidity of a mobile shell is also determined by the size of the sealing surface 43.
- the movable shell may be made of a material having an equivalent flexural modulus E of between 700 and 5000 MPa.
- An average thickness H of between 8 ⁇ m and 1 mm is suitable.
- a mobile shell with a thickness H of between 50 and 500 ⁇ m is used .
- a hull height b between 1 and 50 mm is suitable.
- a hull height b of between 3 and 20 mm is preferably used for the hull.
- a mobile shell having a product bH 3 E of between 35 and 50000 N.mm 2 is preferably used.
- the fixed shell can thus be made of a material having an equivalent flexural modulus E of between 700 and 5000 MPa.
- An average thickness H of between 20 ⁇ m and 2 mm is suitable.
- Preferably a fixed shell with a thickness H of between 100 and 1000 ⁇ m is used. This gives a good compromise between the rigidity and the compactness of the hull.
- a hull height b between 1 and 70 mm is suitable.
- a hull height b of between 3 and 30 mm is preferably used for the mobile hull.
- a product bH 3 E between 50 and 5000000 N.mm 2 for the fixed shell is suitable.
- a shell having a product bH 3 E of between 200 and 500000 N.mm 2 is preferably used.
- the product bH 3 E of the mobile shell is less than or equal to that of the fixed shell.
- the distance D between the pivots 5 and 6 is between 2 mm and the width of the package, and more particularly between 5 and 50 mm.
- the mobile shell can then have two stable positions: a stable position on either side of the plane defined by the pivots. Thus, when the two shells are on the same side of this plane, the shutter is closed. When the shells are on both sides of this plane, the shutter is open.
- the shells can be in the form of monolayer or multilayer films or injected part. They can for example be obtained by stamping, hot forming, injection or thermoforming.
- the sheets and films may comprise conventional additives, and consist of several layers, as is known in the art.
- the films or sheets may comprise several layers, one of which is weldable.
- one of the sheets of the package is attached to the fixed shell and acts as a hull.
- This shutter may also include additional sealing devices such as those known in the state of the art, to complete the seal.
- a tearable operculum is disposed on the end of the shutter.
- This seal can help ensure a perfect sealing of the shutter before using the package. This seal can thus ensure the inviolability and safety of the package.
- This lid can be made for example by welding the sheets of the package above the shutter. This tear-off lid may, for example, make it possible to maintain a sterile or vacuum pack before it is opened by a user.
- This seal may also comprise a peelable film preferably repositionable.
- the invention also relates to methods of manufacturing a package 1.
- FIG 12 shows the steps of a method of manufacturing a package according to the invention.
- This method comprises step 101, which consists in assembling two sheets 9 and 10, superimposing them and producing a weld 11.
- This weld 11 provides an opening in the package.
- the weld 11 defines two pivots 5 and 6 at the opening.
- a flat mobile hull 4 is glued at least on its obturation face 43 and a fixed concave hull 3 is glued on its obturation face 33.
- step 103 the shells are fixed on the outer faces of the assembled sheets.
- the bonded closure face 33 of the fixed shell 3 is applied to the sheet 10 at the level of the opening.
- Edges 31 and 32 are mapped with the welding pivots 5 and 6. It also applies the shutter face 43 of the movable shell 4 on the sheet 9 at the opening.
- the edges 41 and 42 are brought into correspondence with the welding pivots 5 and 6.
- the closing faces can be pressed against each other in order to improve the bonding and to give a concave shape to the movable shell 4 of FIG. curvature identical to the curvature of the fixed concave shell 3.
- Another method allows the hulls to be placed inside the package. For this, the faces opposite to the closing faces 33 and 43 of the shells 3 and 4 are notched. As in the preceding process, it is possible to delimit the edges 41 and 42 while adhering only the face opposite to the obturating face. The hulls are then fixed on the inner faces of the assembled sheets.
- a first and a second sheet are assembled by providing an opening, then a concave fixed shell is reported.
- the concave shell is then elastically flattened and then assembled at the opening on one of the two sheets.
- the fixed shell then returns to its original concave position.
- a flat fixed shell is attached to or formed in a sheet of the package, and then concave according to a known method.
- the invention is not limited to the embodiment shown but is capable of many improvements easily accessible to those skilled in the art.
- a package having a shutter whose only stable position is in the closed position remains within the scope of the invention.
- the concave shells have been mainly described with a continuous curved shape, a shell having a discontinuous shape, such as a V shape, remains within the scope of the invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Making Paper Articles (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Packaging For Recording Disks (AREA)
- Closing Of Containers (AREA)
- Package Closures (AREA)
- Basic Packing Technique (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
Description
L'invention a pour objet un nouveau système de fermeture, adapté sur des emballages de type sachets, notamment en plastique. Ces emballages ou sachets peuvent être des "Doypack" ou des sachets dits "trois soudures".The invention relates to a new closure system, suitable for packaging type bags, especially plastic. These packages or bags may be "Doypack" or so-called "three welds" bags.
On connaît déjà de nombreux emballages ou sachets plastiques, munis ou non de valve.Many plastic packages or bags, with or without a valve, are already known.
Le document
Les systèmes ci-dessus présentent cependant plusieurs inconvénients. Ils sont complexes et nécessitent un dispositif de pliage complexe. Leur ouverture est en outre peu pratique pour l'utilisateur.The above systems, however, have several disadvantages. They are complex and require a complex folding device. Opening them is also inconvenient for the user.
L'invention décrite dans la revendication 1 permet de remédier aux défauts des systèmes de l'art antérieur. De plus, l'invention propose un emballage comprenant un obturateur permettant une ouverture facile et illimitée. Ainsi, l'invention fournit un emballage comprenant un obturateur, l'obturateur comprenant une coque fixe et une coque mobile articulée à la coque fixe par l'intermédiaire de pivots, la coque mobile présentant des moyens d'inversion de flexion formés d'au moins une protubérance de la coque mobile au-delà d'un pivot.The invention described in
Selon un autre mode de réalisation, la coque mobile comprend deux parties rigides articulées et la partie fixe est souple.According to another embodiment, the mobile shell comprises two rigid articulated parts and the fixed part is flexible.
Selon un mode de réalisation, la coque fixe et la coque mobile sont placées en vis-à-vis.According to one embodiment, the fixed shell and the movable shell are placed vis-a-vis.
Selon un autre mode de réalisation, la coque fixe et la coque mobile présentent chacune une face d'obturation, ces faces d'obturation étant décalées.According to another embodiment, the fixed shell and the movable shell each have a shutter face, these shutter faces being offset.
Selon une variante, la coque fixe est concave.According to one variant, the fixed shell is concave.
Selon une autre variante, la coque fixe est cintrée.According to another variant, the fixed shell is bent.
Selon encore une autre variante, la coque fixe est formée d'un secteur angulaire de cylindre.According to yet another variant, the fixed shell is formed of an angular sector of the cylinder.
Selon une variante, la coque mobile présente une courbure sensiblement identique à la courbure de la coque fixe.According to a variant, the movable shell has a curvature substantially identical to the curvature of the fixed shell.
Selon encore une variante, la coque mobile présente deux protubérances sous forme de bandes.According to another variant, the mobile shell has two protuberances in the form of strips.
Par ailleurs, il est également possible de prévoir que l'obturateur soit formé d'une seule pièce.Moreover, it is also possible to provide that the shutter is formed in one piece.
Selon une variante, la coque fixe est réalisée dans une feuille de l'emballage.Alternatively, the fixed shell is made in a sheet of the package.
Selon une autre variante, la coque mobile est réalisée dans une feuille de l'emballage.According to another variant, the mobile shell is made in a sheet of the package.
Selon encore une variante, il comprend deux feuilles, la coque fixe étant solidaire d'une face d'une première feuille et la coque mobile est solidaire d'une face d'une deuxième feuille.According to another variant, it comprises two sheets, the fixed shell being secured to one side of a first sheet and the movable shell is secured to one side of a second sheet.
On peut également prévoir que les pivots soient parallèles.It is also possible that the pivots are parallel.
Il est également préférable que la coque mobile présente deux positions d'équilibre et que la longueur développée de la coque fixe soit comprise entre D et π*D/2, et de préférence entre
Il est souhaitable que la distance entre les pivots soit comprise entre 2 mm et la largeur de l'emballage, et de préférence entre 5 et 50 mm.It is desirable that the distance between the pivots is between 2 mm and the width of the package, and preferably between 5 and 50 mm.
Selon une variante, les pivots sont assurés par l'assemblage de feuilles de l'emballage.According to a variant, the pivots are ensured by the assembly of sheets of the packaging.
Selon une autre variante, les pivots sont assurés par l'obturateur lui-même.According to another variant, the pivots are provided by the shutter itself.
Selon encore une variante, les pivots ont une forme de V.According to another variant, the pivots have a V shape.
Les coques présentent également de préférence les caractéristiques suivantes, avec H l'épaisseur en mm, b la hauteur en mm et E le module équivalent d'une coque en N.mm-2:
- pour la coque fixe: le produit bH3E est compris entre 50 et 5 000 000 N.mm2;
- pour la coque mobile: le produit bH3E est compris entre 5 et 200 000 N.mm2.
- for the fixed shell: the product bH 3 E is between 50 and 5,000,000 N.mm 2 ;
- for the mobile hull: the product bH 3 E is between 5 and 200 000 N.mm 2 .
En outre, il est souhaitable que les coques présentent les caractéristiques suivantes, avec H l'épaisseur en mm, b la hauteur en mm et E le module équivalent d'une coque en N.mm-2:
- pour la coque fixe: le produit bH3E est compris entre 200 et 500 000 N.mm2.
- pour la coque mobile: le produit bH3E est compris entre 35 et 50 000 N.mm2.
- for the fixed hull: the product bH 3 E is between 200 and 500 000 N.mm 2 .
- for the mobile hull: the product bH 3 E is between 35 and 50 000 N.mm 2 .
Par ailleurs les coques présentent avantageusement les caractéristiques suivantes, avec H l'épaisseur en mm, b la hauteur en mm et E le module équivalent d'une coque en N.mm-2:
- le rapport entre les produits bH3E respectivement de la coque mobile et de la coque fixe est compris entre 1:1000 et 1:1.
- the ratio between the products bH 3 E respectively of the movable shell and the fixed shell is between 1: 1000 and 1: 1.
Selon une variante, l'articulation de la coque mobile est assurée par une feuille de l'emballage.According to one variant, the articulation of the mobile shell is ensured by a sheet of the package.
Selon encore une variante, la coque mobile est formée d'une pièce comprenant une partie souple articulant les parties rigides.According to another variant, the mobile shell is formed of a part comprising a flexible part articulating the rigid parts.
Selon un autre mode de réalisation, l'obturateur présente en outre un opercule étanche et déchirable bouchant l'écoulement entre la coque fixe et la coque mobile.According to another embodiment, the shutter further has a sealed and tear-off seal blocking the flow between the fixed shell and the movable shell.
L'invention concerne également un procédé de fabrication d'un emballage selon l'invention, comprenant les étapes suivantes :
- l'assemblage d'une première et d'une deuxième feuille en ménageant une ouverture;
- la solidarisation à l'une des deux feuilles au niveau de l'ouverture, d'une coque fixe rapportée.
- assembling a first and a second sheet with an opening;
- the fastening to one of the two sheets at the opening, a reported fixed hull.
L'invention concerne également un autre procédé, comprenant les étapes suivantes :
- l'assemblage d'une première et d'une deuxième feuille en ménageant une ouverture;
- la solidarisation à l'une des deux feuilles au niveau de l'ouverture, d'une coque mobile rapportée.
- assembling a first and a second sheet with an opening;
- the fastening to one of the two sheets at the opening, a reported mobile hull.
Selon une variante, l'assemblage est réalisé par soudage.According to one variant, the assembly is made by welding.
Selon une autre variante, l'assemblage est réalisé par collage.According to another variant, the assembly is made by gluing.
On peut également prévoir en outre une étape préalable d'extrusion ou d'injection d'une coque.It can also be provided further a prior step of extrusion or injection of a shell.
Selon une variante, la coque fixe est rendue concave après avoir été solidarisée à l'une des deux feuilles.According to one variant, the fixed shell is rendered concave after being secured to one of the two sheets.
L'invention concerne également un procédé de fabrication comprenant les étapes suivantes :
- l'assemblage d'une première et d'une deuxième feuille en ménageant une ouverture;
- la fourniture d'une coque fixe concave;
- l'aplatissement par déformation élastique de la coque fixe;
- la solidarisation de la coque fixe à une feuille de l'emballage.
- assembling a first and a second sheet with an opening;
- provision of a concave fixed hull;
- flattening by elastic deformation of the fixed shell;
- the securing of the fixed shell to a sheet of the package.
Selon un autre procédé, on réalise les étapes suivantes :
- l'assemblage d'une première et d'une deuxième feuille en ménageant une ouverture;
- la solidarisation de l'obturateur à la première et à la deuxième feuille.
- assembling a first and a second sheet with an opening;
- securing the shutter to the first and second sheets.
Selon encore un autre procédé, on réalise les étapes suivantes :
- l'assemblage d'une première feuille et d'une deuxième feuille dans laquelle la coque fixe est réalisée, en ménageant une ouverture;
- la solidarisation d'une coque mobile sur la première feuille.
- assembling a first sheet and a second sheet in which the fixed shell is formed, providing an opening;
- the joining of a mobile hull to the first sheet.
L'invention concerne également un procédé d'ouverture ou de fermeture d'un emballage selon l'invention, comprenant une étape d'application d'un effort sur les moyens d'inversion de flexion selon une ligne d'action ne passant pas par un des pivots.The invention also relates to a method of opening or closing a package according to the invention, comprising a step of applying a force on the flexion reversal means according to a line of action not passing through one of the pivots.
L'invention est maintenant décrite plus en détails dans la description qui suit, et en référence aux dessins, dans lesquels :
- La figure 1 représente schématiquement et en perspective un emballage et un obturateur ouvert selon un premier mode de réalisation de l'invention;
- La figure 2 représente schématiquement et en perspective une coque fixe d'un obturateur selon la figure 1;
- La figure 3 représente schématiquement et en perspective une coque mobile selon la figure 1;
- La figure 4 représente l'obturateur de la figure 1 fermé en coupe suivant un plan normal à son axe;
- La figure 5 représente l'obturateur de la figure 1 ouvert en coupe suivant un plan normal à son axe;
- La figure 6 représente schématiquement les efforts appliqués par un opérateur pour ouvrir l'obturateur de la figure 1;
- La figure 7 représente en coupe un emballage similaire, mais ne faisant pas partie de l'invention;
- La figure 8 représente en coupe un emballage similaire, mais ne faisant pas partie de l'invention;
- La figure 9 représente l'obturateur d'un emballage selon un autre mode de réalisation de l'invention;
- Les figures 10 et 11 représentent en vue de dessus un emballage selon encore un autre mode de réalisation de l'invention;
- La figure 12 représente les étapes d'un procédé de fabrication d'un emballage selon l'invention.
- Figure 1 shows schematically and in perspective a package and an open shutter according to a first embodiment of the invention;
- FIG. 2 diagrammatically and in perspective a fixed shell of a shutter according to FIG. 1;
- Figure 3 schematically shows in perspective a movable shell according to Figure 1;
- FIG. 4 represents the shutter of FIG. 1 closed in section along a plane normal to its axis;
- Figure 5 shows the shutter of Figure 1 open in section along a plane normal to its axis;
- Figure 6 shows schematically the forces applied by an operator to open the shutter of Figure 1;
- Figure 7 shows in section a similar package, but not part of the invention;
- Figure 8 shows in section a similar package, but not part of the invention;
- Figure 9 shows the shutter of a package according to another embodiment of the invention;
- Figures 10 and 11 show in top view a package according to yet another embodiment of the invention;
- Figure 12 shows the steps of a method of manufacturing a package according to the invention.
L'invention propose un emballage avec obturateur, cet obturateur présentant une coque mobile dont les états de fléchissement définissent des positions d'ouverture et de fermeture de l'obturateur, la coque mobile disposant de moyens pour inverser sa flexion. Un tel obturateur peut par exemple être obtenu en formant des pivots entre cette coque mobile et une coque fixe concave, et en munissant cette coque mobile de moyens d'inversion de flexion.The invention proposes a package with shutter, this shutter having a movable shell whose states of deflection define positions of opening and closing of the shutter, the mobile shell having means to reverse its flexion. Such a shutter can for example be obtained by forming pivots between the movable shell and a concave fixed shell, and providing this mobile shell with flexural inversion means.
La figure 1 montre un emballage 1 selon un premier mode de réalisation de l'invention présentant un obturateur 2. Dans ce mode de réalisation, la coque mobile présente une rigidité inférieure à la rigidité de la coque fixe. L'obturateur 2 comprend une coque fixe concave 3 en vis-à-vis d'une coque mobile 4. La coque mobile est articulée suivant deux pivots parallèles 5 et 6 sur la coque fixe. La coque mobile présente avantageusement, selon une variante décrite par la suite, deux protubérances d'actionnement 7 et 8 se prolongeant au- delà des pivots. L'emballage comprend également deux feuilles 9 et 10 en vis-à-vis, assemblées pour former un réservoir. Ces feuilles sont assemblées de façon étanche sur leur périphérie par une soudure 11.Figure 1 shows a
Ces feuilles sont constituées de matière classique dans l'art, notamment en matière plastique telle que PET, OPA, OPP, PA, PE, PP ou du encore du papier aluminium etc. Ces feuilles peuvent être utilisées en monocouche ou en structure multicouche, complexée ou coextrudée par exemple. Ces deux feuilles sont notamment semi-rigides, en ce sens qu'elles sont susceptibles d'être déformées pour accepter la dilatation du sachet tout en fournissant un maintien général au sachet. L'épaisseur de ces deux feuilles est classique dans l'art, par exemple une épaisseur comprise entre 30 et 1000 µm, et de préférence entre 60 et 250 µm.These sheets are made of conventional material in the art, including plastic such as PET, OPA, OPP, PA, PE, PP or still aluminum foil etc. These sheets may be used in monolayer or multilayer structure, complexed or coextruded, for example. These two sheets are in particular semi-rigid, in that they are capable of being deformed to accept the expansion of the bag while providing general support to the bag. The thickness of these two sheets is conventional in the art, for example a thickness between 30 and 1000 microns, and preferably between 60 and 250 microns.
L'emballage présente une épaisseur globale en général inférieure à 2 mm, de préférence inférieure à 500 µm.The package has an overall thickness generally less than 2 mm, preferably less than 500 μm .
Ces emballages sont appropriés dans tous les domaines techniques, notamment alimentaire, chimie, détergents, cosmétique; et ce pour des liquides, des poudres, des granulés ou des solides de petites tailles (par exemple des bonbons), voire même des gaz.These packages are suitable in all technical fields, including food, chemistry, detergents, cosmetics; for small liquids, powders, granules or solids (eg candies), or even gases.
Les figures 2 et 3 représentent en perspective les coques 3 et 4 de l'obturateur 2 de la figure 1. La coque 3 est une coque fixe et concave présentant deux bords 31 et 32 et une face d'obturation 33. La coque concave 3 peut être obtenue à partir d'un secteur angulaire de cylindre ou par formage à partir d'une forme plane par exemple. La coque 4 est une coque souple et mobile, initialement concave sous l'effet des pivots et de la coque fixe; en effet la longueur développée entre pivots 1 de la coque mobile est supérieure à la distance d entre articulations. La coque 4 présente deux bords 41 et 42. La coque 4 présente une face d'obturation 43 mobile, destinée à venir en contact ou à s'écarter de la face 33. Les faces d'obturation 33 et 43 présentent avantageusement une même courbure car une fois la coque mobile 4 en contact avec la coque fixe, elle en épouse alors la courbure. Les bords 41 et 42 s'articulent respectivement aux bords 31 et 32, en formant les pivots 5 et 6 représentés à la figure 1. Les pivots 5 et 6 représentés sont parallèles mais ils pourraient aussi être disposés en V. Ainsi, il est plus aisé de fléchir la coque 4. La coque 4 comporte également avantageusement deux protubérances 7 et 8 faisant saillie par rapport à la face d'obturation 43, respectivement à partir des bords 41 et 42. Ces protubérances sont réalisées dans la continuité de la face d'obturation 43. Ainsi, l'application d'une force, dont la ligne d'action ne passe pas par les pivots 5 et 6, sur une des protubérances 7 ou 8, modifie la courbure de la face d'obturation 43 de la coque mobile 4. Ces protubérances ont de préférence une forme de bande et peuvent ainsi fournir une surface utile conséquente, et peuvent aisément être réalisées lors de la formation de la coque 4. Les protubérances pourraient n'être que des ergots dépassant des pivots. Les moyens d'inversion de flexion pourraient aussi se présenter autrement que sous forme de ces protubérances mais se présenter sous forme d'excroissances ou de languettes susceptibles d'être manipulées par l'utilisateur, comme cela sera décrit par la suite.Figures 2 and 3 show in perspective the
Les figures 4 et 5 représentent en coupe suivant une section normale à un axe des coques, l'obturateur 2, respectivement en position fermée et ouverte.Figures 4 and 5 show in section along a normal section to an axis of the shells, the
Dans la figure 4, on observe l'obturateur en position fermée. La coque mobile 4 est alors fléchie dans une première position stable. Dans cette position, la face d'obturation 43 de la coque mobile est maintenue accolée contre (elle "épouse") la face d'obturation 33 de la coque fixe et bouche ainsi le passage de l'ouverture de l'emballage dont le contenu est gazeux, liquide ou solide. Les bords 41 et 42 de la coque mobile sont articulés suivant deux pivots 5 et 6 aux bords 31 et 32 de la coque fixe respectivement. La rigidité de la coque fixe 3 permet de maintenir les bords 41 et 42 à un écartement inférieur à la longueur de matière de la coque mobile qui les joint.In FIG. 4, the shutter is observed in the closed position. The
Dans la figure 5, on observe l'obturateur en position ouverte. La coque mobile est alors fléchie dans une deuxième position stable. Dans cette position, la face d'obturation 43 de la coque mobile est écartée de la face d'obturation 33 de la coque fixe et libère ainsi le passage de l'ouverture de l'emballage. La rigidité de la coque 3 permet de maintenir les bords 41 et 42 à un écartement inférieur à la longueur de matière de la coque mobile qui les joint. Ainsi, la coque mobile est contrainte dans la position stable d'ouverture. La coque 4 est alors dans une deuxième position stable, dans laquelle sa courbure est inversée par rapport à la position fermée.In FIG. 5, the shutter is observed in the open position. The mobile hull is then flexed in a second stable position. In this position, the
Comme cela est représenté à la figure 6, le passage d'une position à l'autre peut être obtenu de préférence par des moyens d'inversion de flexion disposés sur la coque mobile. Dans le mode de réalisation présenté, ces moyens correspondent aux protubérances 7 et 8, s'étendant latéralement depuis les bords 41 et 42 de la coque mobile 4. En exerçant les efforts représentés par les flèches de la figure sur les protubérances, on peut modifier la position de la coque mobile jusqu'à ce que la coque mobile atteigne une position d'ouverture stable. Ainsi, l'application de forces sur les protubérances 7 ou 8, dont la ligne d'action ne passe pas par les pivots 5 ou 6, tout en maintenant la coque fixe en place, par exemple en son centre comme cela est représenté par la flèche s'y rattachant, décale la face d'obturation de sa position fermée stable. En poursuivant l'application de ces efforts, la coque mobile atteint une position de transition. Au-delà de cette position, la coque mobile va fléchir naturellement pour occuper une position ouverte stable.As shown in FIG. 6, the passage from one position to the other can be obtained preferably by flexural inversion means arranged on the movable shell. In the embodiment shown, these means correspond to the
On pourrait également, en sortant du cadre de l'invention, utiliser d'autres moyens d'inversion de flexion que les protubérances 7 et 8. Selon la variante de l'emballage représenté en coupe à la figure 7, des languettes 13 et 14 sont solidarisées respectivement aux coques 3 et 4. Ces languettes peuvent être par exemple soudées ou collées sur les coques ou sur des zones des feuilles 9 et 10 solidaires des coques. Il suffit d'exercer un effort sur les languettes, comme représenté par les flèches, pour ouvrir l'obturateur. Ces languettes sont de préférence placées au niveau de la partie médiane des coques.It would also be possible, outside the scope of the invention, to use other flexural reversal means than the
La figure 8 présente une autre variante, en faisant pas partie de l'invention, de moyens d'inversion de flexion. Des parties 15 et 16 ménagées dans les feuilles 10 et 9 respectivement font saillie par rapport aux coques de l'obturateur. Ainsi, il suffit d'exercer un effort sur les parties 15 et 16 pour ouvrir l'obturateur.Figure 8 shows another variant, not part of the invention, bending reversal means.
Le passage d'une position stable à l'autre peut également être obtenu en pressant les faces 33 et 43 des coques l'une contre l'autre pour la fermeture. Pour procéder à l'ouverture, il suffit d'écarter ces mêmes faces, en introduisant par exemple un objet entre ces faces, tel qu'une paille.The transition from one stable position to another can also be obtained by pressing the
Les pivots 5 et 6 sont de préférence souples pour permettre un pivotement relatif des bords 31 et 32 par rapport aux bords 41 et 42 respectivement. Cette jonction peut être réalisée au moyen d'un joint de colle ou d'une soudure des coques à ce niveau. On peut également effectuer la jonction en solidarisant les coques 2 et 3 respectivement à deux faces d'un emballage, assemblées l'une à l'autre pour former les pivots entre les coques. Des procédés de fabrication de l'emballage seront détaillés par la suite. Les pivots peuvent avoir, au niveau de leur soudure, une forme de V.The
Selon un autre mode de réalisation de l'invention, l'obturateur est réalisé en une pièce et comprend une coque mobile et une coque fixe. Ainsi, la coque mobile et la coque fixe sont réalisées monobloc. Une telle pièce peut notamment être obtenue par moulage ou par extrusion.According to another embodiment of the invention, the shutter is made in one piece and comprises a shell mobile and a fixed hull. Thus, the mobile shell and the fixed shell are made in one piece. Such a part may in particular be obtained by molding or extrusion.
La figure 9 représente un exemple d'obturateur selon ce mode de réalisation d'un emballage. Cet obturateur comprend une coque fixe 3 et une coque mobile 4 formées monobloc, en une seule et même pièce. On peut ainsi obtenir un obturateur monobloc en une seule pièce. La coque fixe et la coque mobile peuvent pivoter l'une par rapport à l'autre autour des pivots 5 et 6. La coque fixe présente une bande supérieure et une bande inférieure entourant une bande formant coque mobile. Lorsque l'obturateur est en position fermée, la coque mobile vient se caler entre la partie supérieure et la partie inférieure de la coque fixe. La coque fixe et la coque mobile peuvent ainsi être décalées l'une par rapport à l'autre sans se recouvrir. Lorsque la coque fixe présente un nombre de bandes supérieur à celui de la coque mobile, la coque fixe présente une rigidité supérieure à la coque mobile. Une première feuille est solidarisée sur la partie arrière (représentée par les hachures sur la figure) de la coque mobile 4. Une deuxième feuille est solidarisée sur la partie arrière de la coque fixe 3. L'obturateur est ainsi placé à l'intérieur de l'emballage. L'obturateur est représenté en position ouverte sur la figure 9; la coque mobile est en effet écartée de la coque fixe. Pour fermer l'obturateur, il suffit de presser la coque mobile en direction de la coque fixe. Lorsque la coque mobile se cale entre les deux parties de la coque fixe, les feuilles solidarisées respectivement à la coque mobile et à la coque fixe viennent en contact pour empêcher tout écoulement de fluide. Un tel obturateur peut être obtenu à partir d'une plaque dans laquelle on réalise deux découpes longitudinales pour délimiter la coque mobile et la coque fixe. On peut ensuite donner une concavité aux coques par formage par exemple.Fig. 9 shows an exemplary shutter according to this embodiment of a package. This shutter comprises a fixed
L'obturateur de la variante représentée à la figure 9 est formé monobloc mais on peut aussi envisager de réaliser cet obturateur sous forme de plusieurs coques mobiles et fixes indépendantes. On peut également prévoir que la coque mobile ou la coque fixe présente un nombre de parties différent. L'obturateur représenté à la figure 9 présente également, conformément à l'invention des protubérances 7 et 8, mais d'autres moyens d'inversion de flexion de la partie mobile peuvent également être utilisés, en sortant du cadre de l'invention, tels que ceux représentés aux figures 7 et 8.The shutter of the variant shown in FIG. 9 is formed in one piece, but it is also possible to envisage making this shutter in the form of several mobile and fixed shells. independent. It is also possible that the mobile hull or the fixed hull has a different number of parts. The shutter shown in FIG. 9 also has, in accordance with the invention,
Les figures 10 et 11 représentent en vue de dessus un autre mode de réalisation d'un emballage selon l'invention. Dans ce mode de réalisation, la coque mobile comporte deux parties articulées. La coque mobile présente de préférence une articulation 17 sensiblement vers son milieu. Dans ce mode de réalisation, la coque fixe est de préférence souple et les deux parties sont de préférence rigides. La coque mobile peut ainsi se rabattre contre la coque fixe pour fermer l'obturateur. Lorsqu'un utilisateur rapproche la coque mobile de la coque souple depuis la position ouverte de l'obturateur, les pivots sont écartés. Les deux parties de la coque mobile pivotent autour de l'articulation, et la coque fixe fléchit pour permettre l'écartement des pivots. La coque mobile et la coque fixe sont respectivement solidaires des feuilles 9 et 10. L'articulation peut être réalisée dans la coque elle-même ou au moyen de la feuille 9.Figures 10 and 11 show in top view another embodiment of a package according to the invention. In this embodiment, the movable shell has two articulated parts. The movable shell preferably has a
On utilise de préférence une coque mobile d'une rigidité supérieure à une valeur Rmin. Ainsi, la coque mobile ne présente que peu de positions stables de fléchissement. La coque mobile a alors tendance à revenir d'elle-même vers une des positions de fermeture ou d'ouverture lorsqu'elle est écartée d'une de celles-ci. De plus elle peut alors exercer une pression de fermeture sur la face d'obturation 33 assurant une bonne étanchéité de l'obturateur. Par ailleurs, on utilise de préférence une coque mobile d'une rigidité inférieure à une valeur Rmax. Ainsi, la coque mobile fléchit aisément lorsqu'elle est sollicitée par un utilisateur. La position ouverte de l'obturateur présente alors une section de passage optimale, et la position de fermeture de l'obturateur présente par ailleurs une étanchéité convenable. La rigidité d'une coque mobile se détermine également en fonction de la taille de la surface d'obturation 43.It is preferable to use a mobile shell with a rigidity greater than a value Rmin. Thus, the movable shell has only few stable positions of sag. The hull then has the tendency to return of itself to one of the closed or open positions when it is separated from one of them. In addition it can then exert a closing pressure on the sealing
La coque mobile peut être réalisée avec un matériau présentant un module de flexion E équivalent compris entre 700 et 5000 Mpa. Une épaisseur moyenne H comprise entre 8µm et 1mm convient. On utilise préférentiellement une coque mobile d'une épaisseur H comprise entre 50 et 500µm. Une hauteur de coque b comprise entre 1 et 50 mm convient. On utilise de préférence une hauteur de coque b comprise entre 3 et 20mm pour la coque mobile. Un produit bH3E, caractérisant la rigidité, compris entre Rmin=5 N.mm2 et Rmax=200000 N.mm2 pour la coque mobile convient. On utilise de préférence une coque mobile ayant un produit bH3E compris entre 35 et 50000 N.mm2.The movable shell may be made of a material having an equivalent flexural modulus E of between 700 and 5000 MPa. An average thickness H of between 8 μm and 1 mm is suitable. Preferably, a mobile shell with a thickness H of between 50 and 500 μm is used . A hull height b between 1 and 50 mm is suitable. A hull height b of between 3 and 20 mm is preferably used for the hull. A product bH 3 E, characterizing the stiffness, between Rmin = 5 N.mm 2 and Rmax = 200000 N.mm 2 for the hull is suitable. A mobile shell having a product bH 3 E of between 35 and 50000 N.mm 2 is preferably used.
Il est souhaitable de choisir une rigidité pour la coque 3 supérieure à la limite inférieure de rigidité R'min pour avoir une coque qui se déforme peu lorsqu'un utilisateur la manipule. On peut ainsi maintenir un écartement entre les pivots sensiblement constant.It is desirable to choose a stiffness for the
La coque fixe peut ainsi être réalisée avec un matériau présentant un module de flexion E équivalent compris entre 700 et 5000 Mpa. Une épaisseur moyenne H comprise entre 20µm et 2mm convient. On utilise préférentiellement une coque fixe d'une épaisseur H comprise entre 100 et 1000µm. On obtient ainsi un bon compromis entre la rigidité et la compacité de la coque. Une hauteur de coque b comprise entre 1 et 70 mm convient. On utilise de préférence une hauteur de coque b comprise entre 3 et 30mm pour la coque mobile. Un produit bH3E compris entre 50 et 5000000 N.mm2 pour la coque fixe convient. On utilise de préférence une coque ayant un produit bH3E compris entre 200 et 500000 N.mm2.The fixed shell can thus be made of a material having an equivalent flexural modulus E of between 700 and 5000 MPa. An average thickness H of between 20 μm and 2 mm is suitable. Preferably a fixed shell with a thickness H of between 100 and 1000 μm is used. This gives a good compromise between the rigidity and the compactness of the hull. A hull height b between 1 and 70 mm is suitable. A hull height b of between 3 and 30 mm is preferably used for the mobile hull. A product bH 3 E between 50 and 5000000 N.mm 2 for the fixed shell is suitable. A shell having a product bH 3 E of between 200 and 500000 N.mm 2 is preferably used.
Il est cependant préférable que le produit bH3E de la coque mobile soit inférieur ou égal à celui de la coque fixe. On choisira ainsi de préférence un rapport R entre les rigidités compris entre 1:1000 et 1:1. La coque fixe ne fléchira dans ce cas qu'assez peu lors de la déformation de la coque mobile.It is however preferable that the product bH 3 E of the mobile shell is less than or equal to that of the fixed shell. We will thus preferably choose a ratio R between the rigidities of between 1: 1000 and 1: 1. In this case, the fixed hull will only bend a little during the deformation of the hull.
Il est préférable que la distance D entre les pivots 5 et 6 soit comprise entre 2 mm et la largeur de l'emballage, et plus particulièrement entre 5 et 50 mm.It is preferable that the distance D between the
D'une façon générale, il est préférable d'utiliser une coque fixe et une coque mobile dont les longueurs développées entre pivots sont similaires. On choisira ainsi de préférence un rapport de la longueur développée de la coque mobile sur la longueur développée de la coque fixe compris entre 0,9 et 1,1.In general, it is preferable to use a fixed shell and a movable shell whose lengths developed between pivots are similar. Thus, a ratio of the developed length of the mobile shell to the developed length of the fixed shell of between 0.9 and 1.1 will preferably be chosen.
En désignant par d la distance entre articulations, on choisit par ailleurs de préférence une longueur développée entre pivot comprise entre D et π*D/2, et plus particulièrement entre
On peut utiliser des matériaux tels que le PE, le PVC, le PMMA, l'EVA, le PP, l'OPP, le PET, le polycarbonate, le PA, le carton, l'acier ou l'aluminium pour réaliser les coques. Les coques peuvent se présenter sous la forme de films mono ou multicouches ou de pièce injectée. Elles peuvent par exemple être obtenues par emboutissage, formage à chaud, injection ou thermoformage.Materials such as PE, PVC, PMMA, EVA, PP, OPP, PET, polycarbonate, PA, cardboard, steel or aluminum can be used to make shells . The shells can be in the form of monolayer or multilayer films or injected part. They can for example be obtained by stamping, hot forming, injection or thermoforming.
L'homme de métier saura trouver en fonction des valeurs de b, D, H, E, H3E et R définir les matériaux et les épaisseurs appropriées.Those skilled in the art will be able to find, based on the values of b, D, H, E, H3E and R, the appropriate materials and thicknesses.
Enfin, on notera que les feuilles et films peuvent comprendre les additifs classiques, et être constitués de plusieurs couches, comme il est connu dans l'art. Ainsi, les films ou feuilles peuvent comprendre plusieurs couches, dont l'une est soudable.Finally, it will be appreciated that the sheets and films may comprise conventional additives, and consist of several layers, as is known in the art. Thus, the films or sheets may comprise several layers, one of which is weldable.
Selon une variante de l'invention, une des feuilles de l'emballage est rattachée à la coque fixe et fait office de coque mobile.According to a variant of the invention, one of the sheets of the package is attached to the fixed shell and acts as a hull.
Selon encore une variante de l'invention, la coque mobile est rapportée sur une feuille de l'emballage.According to another variant of the invention, the mobile shell is attached to a sheet of the package.
Il est également possible de réaliser l'emballage et l'obturateur monobloc, en une seule et même pièce. Il est également possible de réaliser l'obturateur et l'une des coques monobloc, en une seule et même pièce.It is also possible to produce the packaging and the one-piece shutter, in one and the same piece. It is also possible to make the shutter and one of the one-piece shells, in one and the same room.
Cet obturateur peut aussi comprendre des dispositifs supplémentaires d'étanchéité tels que ceux connus dans l'état de la technique, pour parfaire l'étanchéité.This shutter may also include additional sealing devices such as those known in the state of the art, to complete the seal.
Ainsi, suivant un autre mode de réalisation, un opercule déchirable est disposé sur l'extrémité de l'obturateur. Cet opercule peut permettre d'assurer une étanchéité parfaite de l'obturateur avant l'utilisation de l'emballage. Cet opercule peut ainsi assurer l'inviolabilité et la sécurité de l'emballage. Cet opercule peut être réalisé par exemple par une soudure des feuilles de l'emballage au-dessus de l'obturateur. Cet opercule déchirable peut par exemple permettre de maintenir un emballage stérile ou sous vide avant qu'il ne soit ouvert par un utilisateur. Cet opercule peut aussi comprendre un film pelable de préférence repositionnable.Thus, according to another embodiment, a tearable operculum is disposed on the end of the shutter. This seal can help ensure a perfect sealing of the shutter before using the package. This seal can thus ensure the inviolability and safety of the package. This lid can be made for example by welding the sheets of the package above the shutter. This tear-off lid may, for example, make it possible to maintain a sterile or vacuum pack before it is opened by a user. This seal may also comprise a peelable film preferably repositionable.
L'invention concerne également des procédés de fabrication d'un emballage 1.The invention also relates to methods of manufacturing a
La figure 12 représente les étapes d'un procédé de fabrication d'un emballage selon l'invention. Ce procédé comprend l'étape 101, qui consiste à assembler deux feuilles 9 et 10, en les superposant et en réalisant une soudure 11. Cette soudure 11 ménage une ouverture dans l'emballage. La soudure 11 définit deux pivots 5 et 6 au niveau de l'ouverture.Figure 12 shows the steps of a method of manufacturing a package according to the invention. This method comprises
Par ailleurs, à l'étape 102, on encolle une coque mobile plane 4 au moins sur sa face d'obturation 43 et on encolle une coque concave fixe 3 sur sa face d'obturation 33. On peut à cette étape délimiter les bords 41 et 42 en n'encollant que la face d'obturation 43.Furthermore, in
A l'étape 103, on fixe les coques sur les faces extérieures des feuilles assemblées. On applique la face d'obturation 33 encollée de la coque fixe 3 sur la feuille 10 au niveau de l'ouverture. Les bords 31 et 32 sont mis en correspondance avec les pivots de soudure 5 et 6. On applique également la face d'obturation 43 de la coque mobile 4 sur la feuille 9 au niveau de l'ouverture. Les bords 41 et 42 sont mis en correspondance avec les pivots de soudure 5 et 6. On peut presser les faces d'obturation l'une contre l'autre afin d'améliorer le collage et donner une forme concave à la coque mobile 4 de courbure identique à la courbure de la coque fixe concave 3.In
Un autre procédé permet de placer les coques à l'intérieur de l'emballage. Pour cela, on encolle les faces opposées aux faces d'obturation 33 et 43 des coques 3 et 4. On peut comme dans le procédé précédant délimiter les bords 41 et 42 en n'encollant que la face opposée à la face d'obturation 43. On fixe alors les coques sur les faces intérieures des feuilles assemblées.Another method allows the hulls to be placed inside the package. For this, the faces opposite to the closing faces 33 and 43 of the
Selon un autre procédé, on assemble une première et une deuxième feuille en ménageant une ouverture, puis on rapporte une coque fixe concave. On aplatit ensuite élastiquement la coque concave, puis on l'assemble au niveau de l'ouverture sur une des deux feuilles. La coque fixe retourne alors à sa position concave d'origine.According to another method, a first and a second sheet are assembled by providing an opening, then a concave fixed shell is reported. The concave shell is then elastically flattened and then assembled at the opening on one of the two sheets. The fixed shell then returns to its original concave position.
Selon encore un autre procédé de fabrication d'un emballage selon l'invention, une coque fixe plane est rapportée sur ou formée dans une feuille de l'emballage, puis concave selon un procédé connu.According to yet another method of manufacturing a package according to the invention, a flat fixed shell is attached to or formed in a sheet of the package, and then concave according to a known method.
Il est également envisageable de réaliser l'assemblage des coques sur les feuille par soudage. Il est encore possible d'assembler les feuilles par collage.It is also conceivable to assemble the hulls on the sheets by welding. It is still possible to assemble the sheets by gluing.
La fabrication peut par ailleurs faire emploi d'un film-écran qui permet une soudure d'une des feuilles sur l'autre en ménageant une ouverture au niveau de l'obturateur. On introduit un film formant écran sur une feuille au niveau de l'ouverture à ménager. On vient ensuite apposer l'autre feuille sur la structure précédente, et on place le tout entre deux mâchoires d'une machine à souder ou barrettes de soudure. Ce film formant écran est en un matériau sensiblement insensible à la chaleur et qui n'adhère pas sur le film à la température de soudure. Il peut être par exemple en PTFE, ou en un autre matériau, tel que de la toile téflonnée. Dans ce cas on peut souder en même temps les feuilles et la coque fixe, ou les feuilles et les coques fixes et mobiles.The manufacture can also use a film-screen that allows a welding of one of the sheets on the other by providing an opening at the shutter. A screen film is introduced onto a sheet at the opening to be machined. Then comes to affix the other sheet on the previous structure, and it is placed between two jaws of a welding machine or solder bars. This screen film is made of a material that is substantially insensitive to heat and does not adhere to the film at the welding temperature. It may be for example PTFE, or other material, such as teflon fabric. In this case it is possible to weld at the same time the sheets and the fixed shell, or the leaves and the fixed and mobile hulls.
On notera que les procédés ci-dessus s'appliquent sans modification majeure au cas où l'une des feuilles de l'emballage sert de coque mobile.It should be noted that the above methods apply without major modification in the case where one of the sheets of the packaging serves as a mobile hull.
L'invention n'est pas limitée au mode de réalisation représenté mais est susceptible de nombreuses améliorations aisément accessibles à l'homme de l'art. Ainsi, un emballage présentant un obturateur dont la seule position stable se trouve en position fermée reste dans la portée de l'invention. Par ailleurs, bien que les coques concaves aient été principalement décrites avec une forme courbe continue, une coque présentant une forme discontinue, telle qu'une forme en V, reste dans la portée de l'invention.The invention is not limited to the embodiment shown but is capable of many improvements easily accessible to those skilled in the art. Thus, a package having a shutter whose only stable position is in the closed position remains within the scope of the invention. Furthermore, although the concave shells have been mainly described with a continuous curved shape, a shell having a discontinuous shape, such as a V shape, remains within the scope of the invention.
Claims (34)
- Packaging (1), comprising a closing device (2), said closing device comprising a fixed shell (3) and a moveable shell (4) articulated to said fixed shell via pivots (5, 6), characterized in that said moveable shell has flexion inversion means (7, 8) formed by at least one protuberance (7, 8) of the moveable shell beyond a pivot, said packaging being opened by application of a force to the flexion inversion means, according to a line of action not passing by one of the pivots.
- The packaging of claim 1, characterized in that the moveable shell comprises two articulated rigid parts and in that the fixed part is flexible.
- The packaging of claim 1 or 2, characterized in that the fixed shell and the moveable shell are placed facing each other.
- The packaging of claim 1 or 2, characterized in that the fixed shell and the moveable shell each have a closing face, these closing faces being offset.
- The packaging of one of the previous claims, characterized in that the fixed shell (3) is concave.
- The packaging of claim 5, characterized in that the fixed shell is curred.
- The packaging of claim 6, characterized in that the fixed shell is formed from an angular cylinder sector.
- the packaging of claim 6 or 7, characterized in that the moveable shell has a curve approximately identical to the curve of the fixed shell.
- The packaging of one of the previous claims, characterized in that the moveable shell has two protuberances (7, 8) in the form of bands.
- The packaging of one of the previous claims, characterized in that the closing device is formed from a single piece.
- The packaging of one of the previous claims, characterized in that the fixed shell (3) is made in one sheet of the packaging (9, 10).
- The packaging of one of the previous claims, characterized in that the moveable shell (4) is made in one sheet of the packaging (9, 10).
- The packaging of one of claims 1 to 10, characterized in that it comprises two sheets, the fixed shell being integral with one face of a first sheet and in that the moveable shell is integral with one face of a second sheet.
- The packaging of one of the previous claims, characterized in that the pivots (5, 6) are parallel.
- The packaging of claim 10 or 11, characterized in that the distance between the pivots is comprised between 2 mm and the width of the packaging, and preferably between 5 and 50 mm.
- The packaging of one of the previous claims, characterized in that the pivots arc provided by the assembly of sheets of the packaging.
- The packaging of one of claims 1 to 12, characterized in that the pivots are provided by the closing device itself.
- The packaging of one of the previous claims, characterized in that the pivots are in the shape of a "V".
- The packaging of one of claims 1 or 3 to 19, characterized in that the shells have the following characteristics, with 11 being the thickness in mm, b the height in mm and E the equivalent modulus of a shell in N.mm-2;for the fixed shell the product bH3E is comprised between 50 and5,000,000 N.mm-2; and preferably between 200 and 500,000 N.mm-2;for the moveable shell: the product bH3E is comprised between 5 and200,000 N.mm-2, and preferably between 35 and 50,000 N.mm-2;
- The packaging of one of claims 1 or 3 to 20, characterized in that the shells have the following characteristics: with H being the thickness in mm, b the height in mm and E the equivalent modulus of a shell in N.mm-2:the ratio between the products bH3E respectively of the moveable shell and the fixed shell is comprised between 1:1000 and 1:1.
- The packaging of claim 2, characterized in that the articulation of the moveable shell is provided by one sheet of the packaging.
- The packaging of claim 2, characterized in that the moveable shell is formed from a piece comprising a flexible part articulating the rigid parts.
- The packaging of one of the previous claims, characterized in that the closing device moreover has a tight and tear-off cap, stopping the flow between the fixed shell and the moveable shell.
- Production method for a packaging according to one of claims 1 to 9 or 12 to 24, comprising the following steps:- the assembly of a first and second sheet, leaving an opening;- the rendering integral with one of the two sheets at the level of the opening, of a separate fixed shell.
- Production method for a packaging according to one of claims 1 to 9 or 12 to 24, comprising the following steps:- the assembly of a first and second sheet, leaving an opening;- the rendering integral with one of the two sheets at the level of the opening, of separate moveable shell.
- The production method for a packaging according to claim 24 or 25, characterized in that the assembly is carried out by welding.
- The production method for a packaging according to claim 24 or 25, characterized in that the assembly is carried out by gluing.
- The production method for a packaging according to one of claims 25 to 28, characterized in that it moreover comprises a previous extrusion or injection step of a shell.
- The production method for a packaging according to one of claims 25 to 29, characterized in that the fixed shell is made concave after having been rendered integral with one of the two sheets.
- Production method for a packaging according to one of claims 1 to 9 or 12 to 24, comprising the following steps:- the assembly of a first and a second sheet, leaving an opening;- the provision of a concave fixed shell;- the flattening by elastic deformation of the fixed shell;- the affixing of the fixed shell to one sheet of the packaging.
- Production method for a packaging according to claim 10, comprising the following steps:- the assembly of a first and a second sheet, leaving an opening;- the affixing of the closing device to the first and to the second sheet.
- Production method for a packaging according to claim 10, comprising the following steps:- the assembly of a first and a second sheet, in which the fixed shell is made, leaving an opening;- the affixing of the moveable shell to the first sheet.
- Method for opening and closing a packaging according to one of claims I to 23, comprising a step of application of a force to the flexion inversion means, according to a line of action not passing by one of the pivots.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0103395A FR2822136B1 (en) | 2001-03-13 | 2001-03-13 | PACKAGING WITH CLOSURE SYSTEM WITH SHELL, PROCESS FOR THEIR MANUFACTURE |
FR0103395 | 2001-03-13 | ||
PCT/FR2002/000860 WO2002072442A1 (en) | 2001-03-13 | 2002-03-11 | Packaging with a shell closing system and production method therefor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1373083A1 EP1373083A1 (en) | 2004-01-02 |
EP1373083B1 true EP1373083B1 (en) | 2007-06-20 |
Family
ID=8861056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02722335A Expired - Lifetime EP1373083B1 (en) | 2001-03-13 | 2002-03-11 | Packaging with a shell closing system and production method therefor |
Country Status (14)
Country | Link |
---|---|
US (1) | US20040116267A1 (en) |
EP (1) | EP1373083B1 (en) |
AT (1) | ATE365133T1 (en) |
CA (1) | CA2440823A1 (en) |
DE (1) | DE60220770T2 (en) |
DK (1) | DK1373083T3 (en) |
DZ (1) | DZ3501A1 (en) |
ES (1) | ES2289095T3 (en) |
FR (1) | FR2822136B1 (en) |
MA (1) | MA26091A1 (en) |
PT (1) | PT1373083E (en) |
RU (1) | RU2295481C2 (en) |
TN (1) | TNSN03074A1 (en) |
WO (1) | WO2002072442A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004037674A1 (en) * | 2002-10-25 | 2004-05-06 | Luc Marcel Lafond | Spout and container made from flexible film |
AU2004215757B2 (en) | 2003-02-25 | 2010-02-25 | Jactech Aps | Bag |
US20060179825A1 (en) * | 2005-02-16 | 2006-08-17 | Eaton Corporation | Integrated NOx and PM reduction devices for the treatment of emissions from internal combustion engines |
US7062904B1 (en) | 2005-02-16 | 2006-06-20 | Eaton Corporation | Integrated NOx and PM reduction devices for the treatment of emissions from internal combustion engines |
NL2005337C2 (en) * | 2010-09-09 | 2012-03-12 | Pmb Uva Internat B V | PACKING. |
BR102013021866B1 (en) | 2013-08-27 | 2021-12-21 | Whirlpool S.A. | VALVE DISPENSER SYSTEM IN LIQUID FORM BY CENTRIFUGAL INERTIAL ACTION FOR HOUSEHOLD APPLIANCES |
BR102013025343B1 (en) | 2013-10-01 | 2021-08-17 | Whirlpool S.A. | REMOVABLE WASHER BASKET DETECTION SYSTEM AND REMOVABLE WASHER BASKET DETECTION METHOD |
BR102013027400B1 (en) | 2013-10-24 | 2021-08-10 | Whirlpool S.A. | REMOVABLE COMPARTMENT COUPLING SYSTEM FOR HOUSEHOLD APPLIANCES |
US10533273B2 (en) | 2017-07-17 | 2020-01-14 | Whirlpool Corporation | Laundry treating appliance with removable basket |
US11053622B2 (en) | 2017-07-17 | 2021-07-06 | Whirlpool Corporation | Laundry treating appliance with removable basket |
US10648120B2 (en) | 2017-07-17 | 2020-05-12 | Whirlpool Corporation | Laundry treating appliance and method of control |
US11473230B2 (en) | 2017-07-17 | 2022-10-18 | Whirlpool Corporation | Selectable method of control for double basket laundry treating appliance |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2150627A (en) * | 1937-12-28 | 1939-03-14 | Oscar Lindner | Closure |
GB826781A (en) | 1957-03-16 | 1960-01-20 | Thomas Vale Cooper | Improvements relating to mobile apparatus for spreading powdery, granular and analogous matter |
GB826784A (en) | 1957-03-21 | 1960-01-20 | Mono Containers Ltd | Method of making containers from flexible sheet material |
SE329968B (en) * | 1964-01-16 | 1970-10-26 | Tetra Pak Int | |
GB1345904A (en) * | 1971-04-16 | 1974-02-06 | Krawagna A A | Closures |
AU533944B2 (en) * | 1978-09-07 | 1983-12-22 | Matburn (Holdings) Ltd. | Closure for colostomy bag |
DE3146750A1 (en) * | 1980-11-26 | 1982-06-24 | Jesus Monterrey Herrera-Gutierrez | CONTAINER BAG MADE OF FLEXIBLE WALL FILMS WITH SHOULDER OPENING |
US5168312A (en) * | 1989-10-16 | 1992-12-01 | Ricoh Company, Ltd. | Unit for developing electrostatic latent images including member having overcoat layer |
GB9217932D0 (en) * | 1992-08-22 | 1992-10-07 | Weston Terence E | Snap action closure |
FR2711115B1 (en) | 1993-10-11 | 1995-12-08 | High Tech Packaging France Sa | Method of manufacturing a waterproof inflatable enclosure provided with a valve. |
US6234674B1 (en) * | 1999-02-10 | 2001-05-22 | James H. Byers, Jr. | Containers with snap-action closures |
US6168312B1 (en) * | 1999-06-09 | 2001-01-02 | Arthur D. Little Enterprises, Inc. | Closure system for pliable container |
CA2276877A1 (en) * | 1999-07-02 | 2001-01-02 | Hortimat Inc. | A supporting frame for a portion of a stem of a plant |
-
2001
- 2001-03-13 FR FR0103395A patent/FR2822136B1/en not_active Expired - Fee Related
-
2002
- 2002-03-11 PT PT02722335T patent/PT1373083E/en unknown
- 2002-03-11 DK DK02722335T patent/DK1373083T3/en active
- 2002-03-11 EP EP02722335A patent/EP1373083B1/en not_active Expired - Lifetime
- 2002-03-11 RU RU2003130085/12A patent/RU2295481C2/en not_active IP Right Cessation
- 2002-03-11 ES ES02722335T patent/ES2289095T3/en not_active Expired - Lifetime
- 2002-03-11 DE DE60220770T patent/DE60220770T2/en not_active Expired - Lifetime
- 2002-03-11 US US10/471,518 patent/US20040116267A1/en not_active Abandoned
- 2002-03-11 WO PCT/FR2002/000860 patent/WO2002072442A1/en active IP Right Grant
- 2002-03-11 DZ DZ023501A patent/DZ3501A1/en active
- 2002-03-11 CA CA002440823A patent/CA2440823A1/en not_active Abandoned
- 2002-03-11 TN TNPCT/FR2002/000860A patent/TNSN03074A1/en unknown
- 2002-03-11 AT AT02722335T patent/ATE365133T1/en not_active IP Right Cessation
-
2003
- 2003-09-03 MA MA27295A patent/MA26091A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
PT1373083E (en) | 2008-03-18 |
ES2289095T3 (en) | 2008-02-01 |
MA26091A1 (en) | 2004-04-01 |
RU2295481C2 (en) | 2007-03-20 |
WO2002072442A1 (en) | 2002-09-19 |
DZ3501A1 (en) | 2002-03-11 |
ATE365133T1 (en) | 2007-07-15 |
FR2822136A1 (en) | 2002-09-20 |
EP1373083A1 (en) | 2004-01-02 |
US20040116267A1 (en) | 2004-06-17 |
DK1373083T3 (en) | 2007-10-08 |
CA2440823A1 (en) | 2002-09-19 |
DE60220770T2 (en) | 2008-03-06 |
FR2822136B1 (en) | 2003-07-25 |
RU2003130085A (en) | 2005-05-10 |
TNSN03074A1 (en) | 2005-04-08 |
DE60220770D1 (en) | 2007-08-02 |
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