EP1481906B1 - Container with flexible walls - Google Patents

Container with flexible walls Download PDF

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Publication number
EP1481906B1
EP1481906B1 EP04102261A EP04102261A EP1481906B1 EP 1481906 B1 EP1481906 B1 EP 1481906B1 EP 04102261 A EP04102261 A EP 04102261A EP 04102261 A EP04102261 A EP 04102261A EP 1481906 B1 EP1481906 B1 EP 1481906B1
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EP
European Patent Office
Prior art keywords
strips
container
opening
walls
receptacle
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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EP04102261A
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German (de)
French (fr)
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EP1481906A1 (en
Inventor
André Flores
Jean-Jacques Arlotti
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/007—Details of, or accessories for, sacks or bags for facilitating the separation of the two walls, e.g. walls of inequal height, tabs; for maintaining the mouth of the sack or bag open
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00—Refuse receptacles; Accessories therefor
    • B65F1/0006—Flexible refuse receptables, e.g. bags, sacks

Definitions

  • the establishment of the holding means in the open position is relatively complicated and it is not excluded that unexpected closures occur.
  • the remanent opening made according to the prior art is of low amplitude which can impede loading.
  • each sheet constituting the side walls (2, 3) provides an opening (4) for introducing the objects to be loaded into the container (1).
  • two flexible strips (5, 6), for example made of plastic material a little greater than that of the constituent sheets of the side walls (2, 3) are formed and assembled at their ends.
  • the strips (5, 6) are assembled together at their ends by means of pivot joints.
  • the two pivot joints are constituted in the same way and comprise means for limiting the angular amplitude of the rotation.
  • a collage or any other means is possible for this joining. It is also possible to realize the side strips (5, 6) in one piece.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Cereal-Derived Products (AREA)
  • Table Devices Or Equipment (AREA)

Abstract

The container has flexible walls with an opening having a maintaining unit for maintaining the opening in open position. The maintaining unit has two strips (5, 6) connected to the ends of the walls by a pivot joint to space the strips from each other, when the strips are pivoted on the walls. Amplitude of the joint is limited to 180 degrees, where the joint has a notch along the length of the strips.

Description

La présente invention concerne un contenant à parois souples comportant une ouverture dotée de moyens pour la maintenir béante selon le préambule de la revendication 1.The present invention relates to a flexible-walled container having an opening with means for keeping it gaping according to the preamble of claim 1.

L'invention trouvera particulièrement son application dans le domaine de la fabrication de sacs en matière plastiques par exemple pour le conditionnement de gravats dans le secteur du bâtiment.The invention will particularly find application in the field of the manufacture of plastic bags for example for the packaging of rubble in the building sector.

On utilise couramment des sacs réalisés à partir de feuilles souples en matière plastique polymère et comportant une ouverture par laquelle sont introduits les objets à conditionner. C'est notamment le cas dans le domaine du bâtiment et des travaux publics pour la récupération et l'évacuation de gravats.Bags made from flexible sheets of polymer plastic and having an opening through which the articles to be packaged are commonly used are used. This is particularly the case in the field of building and public works for the recovery and disposal of rubble.

Le maintien en position ouverte de tels sacs n'est pas chose aisée si l'on souhaite simultanément réaliser des opérations de chargement du sac.Keeping such bags in the open position is not easy if one wishes simultaneously to carry out loading operations of the bag.

On a déjà pensé à prévoir des moyens pour maintenir en position ouverte des réceptacles. En particulier, le document FR-A-2759 981 présente un réceptacle souple comportant des parois reliées entre elles par pliage et/ou par collage, un fond relié aux parois par pliage et par collage d'une extrémité des parois et présentant des ailettes triangulaires, l'autre extrémité des parois définissant une ouverture avec une partie repliée vers l'intérieur du réceptacle comportant des moyens pour maintenir béante l'ouverture du réceptacle.It has already been thought to provide means for holding receptacles in the open position. In particular, the document FR-A-2759 981 has a flexible receptacle having walls connected together by folding and / or gluing, a bottom connected to the walls by folding and gluing one end of the walls and having triangular fins, the other end of the walls defining an opening with an inwardly folded portion of the receptacle having means for maintaining gap the opening of the receptacle.

La solution proposée selon cette antériorité n'est pas exempte de tous inconvénients. En particulier, la structure considérée est complexe et augmente nettement le coût de fabrication ce qui est particulièrement dommageable dans un domaine où le prix de revient de base d'un sac en matière plastique est relativement faible.The solution proposed according to this prior art is not free of all drawbacks. In particular, the structure in question is complex and significantly increases the cost of manufacture, which is particularly damaging in a field where the basic cost price of a plastic bag is relatively low.

En outre, la mise en place des moyens de maintien en position béante s'avère relativement compliquée et il n'est pas exclu que des fermetures inopinées se produisent. Par ailleurs, l'ouverture rémanente réalisée selon l'antériorité est de faible amplitude ce qui peut gêner le chargement.In addition, the establishment of the holding means in the open position is relatively complicated and it is not excluded that unexpected closures occur. Moreover, the remanent opening made according to the prior art is of low amplitude which can impede loading.

Un contenant selon le préambule de la revendication 1 est connu du document US 5 044 774 A .A container according to the preamble of claim 1 is known from document US 5,044,774 A .

L'invention se propose de remédier à tout ou partie de ces inconvénients avec un contenant amélioré présentant des moyens de maintien en position béante de l'ouverture perfectionnée.The invention proposes to remedy all or part of these disadvantages with an improved container having means for maintaining the improved opening in a gaping position.

En particulier, le contenant selon l'invention présente des moyens pour maintenir béante l'ouverture qui ne sont pas une contrainte pénalisante en matière de prix de revient et permettant par ailleurs une grande efficacité d'utilisation.In particular, the container according to the invention has means for maintaining gaping opening which are not a disadvantageous constraint in terms of cost and also allowing a high efficiency of use.

D'autres buts et avantages apparaîtront au cours de la description qui suit d'un mode préféré de réalisation de l'invention qui n'est cependant pas limitatif.Other objects and advantages will become apparent from the following description of a preferred embodiment of the invention, which is however not limiting.

La présente invention concerne un contenant à parois souples comportant une ouverture dotée de moyens pour la maintenir béante, présentant deux bandes flexibles bordant l'ouverture et reliées à chacune de leurs extrémités par une articulation pivot dont l'une au moins a une amplitude limitée de façon à maintenir écartées les bandes flexibles lorsqu'elles sont pivotées par retournement sur les parois du contenant.The present invention relates to a flexible-walled container having an opening provided with means for maintaining it gaping, having two flexible strips bordering the opening and connected at each of their ends by a pivot joint, at least one of which has a limited amplitude of in order to keep apart the flexible strips when they are rotated by turning over the walls of the container.

Selon l'invention, ce contenant est tel que :

  • L'amplitude de l'articulation est limitée à environ 180°,
  • L'articulation pivot à amplitude limitée est constituée par une entaille sur la largeur d'une bande formée en retrait d'une zone de solidarisation des extrémités des bandes,
    Selon des modes préférés, ce contenant est tel que :
    • Les bandes sont fixées sur la face externe des parois du contenant,
    • Les deux articulations pivots ont une amplitude limitée,
    • Il comporte au moins un élément longitudinal raidisseur sur une paroi,
According to the invention, this container is such that:
  • The amplitude of the joint is limited to about 180 °,
  • The pivot joint with limited amplitude is constituted by a cut along the width of a strip formed in withdrawal of a zone of joining the ends of the strips,
    According to preferred modes, this container is such that:
    • The strips are fixed on the outer face of the walls of the container,
    • The two pivot joints have a limited amplitude,
    • It comprises at least one longitudinal stiffening element on a wall,

L'invention concerne également un procédé pour maintenir béante l'ouverture d'un contenant à parois souples.The invention also relates to a method for keeping open the opening of a soft-walled container.

Les dessins ci-joints sont donnés à titre d'exemples et ne sont pas limitatifs de l'invention. Ils représentent seulement un mode de réalisation de l'invention et permettront de la comprendre aisément.The accompanying drawings are given by way of example and are not limiting of the invention. They represent only one embodiment of the invention and will make it easy to understand.

La figure 1 illustre en perspective un mode de réalisation du contenant de l'invention en position fermée.The figure 1 illustrates in perspective an embodiment of the container of the invention in the closed position.

La figure 2 en est une illustration en perspective d'une phase de déploiement des moyens pour tenir l'ouverture béante.The figure 2 is an illustration in perspective of a phase of deployment of the means to hold the opening gaping.

La figure 3 montre un exemple du résultat offert par l'invention avec une ouverture maintenue.The figure 3 shows an example of the result offered by the invention with a maintained opening.

La figure 4 montre en coupe un détail du contenant de l'invention en référence à la zone repérée A en figure 1.The figure 4 shows in section a detail of the container of the invention with reference to the zone marked A in figure 1 .

La figure 5 montre une étape du déploiement des moyens pour maintenir en position béante en référence à la zone repérée B en figure 2.The figure 5 shows a step of the deployment of the means to maintain in gaping position with reference to the zone marked B in figure 2 .

La figure 6 montre les moyens pour maintenir en position béante l'ouverture en position active en correspondance avec le détail repéré C à la figure 3.The figure 6 shows the means for maintaining in open position the opening in active position in correspondence with the detail marked C at the figure 3 .

La figure 7 illustre une possibilité additionnelle de l'invention avec un raidisseur vue en coupe.The figure 7 illustrates an additional possibility of the invention with a stiffener seen in section.

La forme et la matière du contenant 1 selon l'invention n'est pas limité. Il pourra par exemple s'agit d'un contenant 1 sous forme d'un sac comportant des parois latérales (2, 3) réalisées par des feuilles en matière plastique polymère de forme sensiblement rectangulaire et jointes par trois de leurs bords.The shape and the material of the container 1 according to the invention is not limited. It may, for example, be a container 1 in the form of a bag comprising side walls (2, 3) made of sheets of substantially rectangular polymeric plastics material joined by three of their edges.

Le quatrième bord de chaque feuille constitutive des parois latérales (2, 3) réalise une ouverture (4) permettant l'introduction des objets à charger dans le contenant (1).The fourth edge of each sheet constituting the side walls (2, 3) provides an opening (4) for introducing the objects to be loaded into the container (1).

La figure 1 montre un tel exemple de contenant (1) en position repliée sensiblement à plat.The figure 1 shows such an example of container (1) in the folded position substantially flat.

Sans disposition particulière, lorsqu'on écarte les bords supérieurs du contenant (1 ) de façon à former l'ouverture (4), cette dernière à une propension naturelle à se refermer.Without particular arrangement, when the upper edges of the container (1) are spaced so as to form the opening (4), the latter has a natural propensity to close.

Pour maintenir en position béante ladite ouverture (4) la présente invention comporte des moyens de maintien dont un exemple de réalisation est expliqué ci-après.To keep said opening (4) in the open position, the present invention comprises holding means, an exemplary embodiment of which is explained below.

Suivant le mode préféré de réalisation illustré, deux bandes flexibles (5, 6), par exemple constituées en matière plastique d'épaisseur un peu supérieure à celle des feuilles constitutives des parois latérales (2, 3) sont formées et assemblées à leurs extrémités.According to the preferred embodiment illustrated, two flexible strips (5, 6), for example made of plastic material a little greater than that of the constituent sheets of the side walls (2, 3) are formed and assembled at their ends.

Par ailleurs, les bandes (5, 6) sont solidarisées par tous moyen courant (notamment par thermo collage) au niveau de la bordure de l'ouverture (4) avec les parois latérales (2, 3).Furthermore, the strips (5, 6) are secured by any current means (in particular by heat sealing) at the edge of the opening (4) with the side walls (2, 3).

L'assemblage des bandes (5, 6) entre elles s'effectue au niveau de leurs extrémités par l'intermédiaire d'articulations pivot.The strips (5, 6) are assembled together at their ends by means of pivot joints.

En outre, au moins l'une de ces articulations pivot comporte des moyens pour limiter l'amplitude de cette liberté de mouvement en rotation. On limite à 180° l'amplitude possible du pivot relativement à la position du sac replié telle qu'illustrée en figure 1.In addition, at least one of these pivot joints comprises means for limiting the amplitude of this freedom of movement in rotation. The possible amplitude of the pivot relative to the position of the folded bag as illustrated in FIG. figure 1 .

A titre avantageux, les deux articulations pivot sont constituées de la même façon et comportent des moyens de limitation de l'amplitude angulaire de la rotation.Advantageously, the two pivot joints are constituted in the same way and comprise means for limiting the angular amplitude of the rotation.

De par la liberté de mouvement offerte au niveau des articulations des extrémités des bandes flexibles (5, 6) il est possible d'opérer un mouvement de retournement des bandes (5, 6) sur les parois (2, 3) du contenant (1) suivant l'exemple des flèches présentées à la figure 2. Les moyens de limitation de l'angle de rotation permettent de maintenir écartées les bandes (5, 6) en évitant leur repliage complet par pivot après l'opération de retournement.Due to the freedom of movement provided at the joints of the ends of the flexible strips (5, 6) it is possible to make a reversal movement of the strips (5, 6) on the walls (2, 3) of the container (1). ) following the example of the arrows presented in figure 2 . The means of limitation of the angle of rotation can keep apart the strips (5, 6) avoiding their complete folding by pivot after the reversal operation.

On obtient alors la position illustrée en figure 3 dans laquelle l'ouverture (4) est maintenue avec des bandes flexibles (5, 6) restant écartées.We then obtain the position illustrated in figure 3 wherein the opening (4) is held with flexible strips (5, 6) remaining apart.

Un exemple de réalisation de l'articulation et de sa limitation angulaire est présenté plus précisément aux figures 4 à 6 suivant différentes phases de fonctionnement.An exemplary embodiment of the articulation and its angular limitation is presented more specifically to Figures 4 to 6 following different phases of operation.

La figure 4 correspond à un contenant 1 dans une position repliée telle que visible en figure 1 dans laquelle les bandes flexibles (5, 6) s'appliquent sensiblement l'une contre l'autre.The figure 4 corresponds to a container 1 in a folded position as visible in figure 1 wherein the flexible strips (5, 6) are substantially applied against each other.

Chaque bande (5, 6) est fixée sur une paroi latérale (2, 3) à son extrémité supérieure en bordure de l'ouverture notamment par thermo soudure.Each strip (5, 6) is fixed on a side wall (2, 3) at its upper end at the edge of the opening, in particular by heat sealing.

Il est avantageux que les bandes (5, 6) soient ainsi fixées au niveau de la face externe des parois, latérales (2, 3).It is advantageous that the strips (5, 6) are thus fixed at the outer face of the side walls (2, 3).

L'articulation pivot de deux extrémités de bandes (5, 6) est réalisée par l'intermédiaire d'une entaille (8) orientée suivant la largeur d'une des bandes (5) sur sa face interne. Entre l'extrémité des bandes et ladite entaille (8), les bandes (5, 6) sont solidarisées au niveau d'une zone de solidarisation.The pivot joint of two ends of strips (5, 6) is formed by means of a notch (8) oriented along the width of one of the strips (5) on its inner face. Between the end of the strips and said notch (8), the strips (5, 6) are secured at a joining zone.

Un collage ou tout autre moyen est possible pour cette solidarisation. Il est par ailleurs possible de réaliser les bandes latérales (5, 6) d'un seul tenant.A collage or any other means is possible for this joining. It is also possible to realize the side strips (5, 6) in one piece.

L'entaille (8) assure l'articulation pivot lorsque l'on écarte les bandes latérales (5, 6) l'une de l'autre, tel que représenté en figure 5.The notch (8) provides the pivot joint when the side strips (5, 6) are moved apart from one another as shown in FIG. figure 5 .

En poursuivant le pivot, on parvient à une position représentée en figure 6 correspondant sensiblement à une phase ouverte illustrée en figure 3. On notera que l'opération de pivot relative des bandes latérales (5, 6) est opéré de façon simultanée à l'étape de retournement sur les parois latérales (2, 3) du contenant (1) tel que représenté en figure 2.Continuing the pivot, we arrive at a position represented in figure 6 substantially corresponding to an open phase illustrated in figure 3 . It will be noted that the relative pivoting operation of the lateral strips (5, 6) is carried out simultaneously at the reversal step on the side walls (2, 3) of the container (1) as represented in FIG. figure 2 .

Après une phase de pivot d'environ 180°, la bande (5) parvient en butée relativement à la bande (6) par le biais de la zone de solidarisation (7) telle que représentée en figure 6. Le pivot ne pouvant se poursuivre, les bandes (5, 6) sont maintenues en position écartées parvenant au résultat souhaité à savoir le maintien en position béante de l'ouverture (4).After a pivot phase of about 180 °, the strip (5) abuts relative to the strip (6) through the fastening zone (7) as shown in FIG. figure 6 . Since the pivot can not be continued, the strips (5, 6) are held in spaced apart position to reach the desired result, namely keeping the opening (4) in the open position.

A titre complémentaire, les parois latérales (2, 3) du contenant (1) peuvent comporter des éléments allongés formant des raidisseurs (9) tels que présentés aux figures 1 à 3 et en figure 7 en vue en coupe.In addition, the side walls (2, 3) of the container (1) may comprise elongated elements forming stiffeners (9) as shown in FIGS. Figures 1 to 3 and in figure 7 in sectional view.

A titre préféré, on forme au moins deux raidisseurs par parois latérales (2, 3) et ce directement dans la masse des feuilles en matières plastiques constituant les parois latérales (2, 3). Les raidisseurs (9) offrent une rigidité supplémentaire dans le sens longitudinal du contenant (1) de façon à favoriser son maintien en position verticale lors du chargement.Preferably, at least two stiffeners are formed by side walls (2, 3) directly in the mass of the plastic sheets constituting the side walls (2, 3). The stiffeners (9) provide additional rigidity in the longitudinal direction of the container (1) so as to promote its retention in vertical position during loading.

Combinés avec les moyens pour maintenir l'ouverture (4) en position béante, ils facilitent grandement le chargement.Combined with the means for maintaining the opening (4) in gaping position, they greatly facilitate loading.

REFERENCESREFERENCES

1.1.
Contenantcontaining
2.2.
Paroi latéraleSide wall
3.3.
Paroi latéraleSide wall
4.4.
OuvertureOpening
5.5.
Bande flexibleFlexible band
6.6.
Bande flexibleFlexible band
7.7.
Zone de solidarisationArea of solidarity
8.8.
EntailleNotch
9.9.
RaidisseurStiffener

Claims (4)

  1. Receptacle (1) with flexible walls (2, 3) with an opening (4) equipped with means to maintain it open, formed of two flexible strips (5, 6) bordering opening (4) and connected at each one of their ends by at least one pivot hinge with limited range of movement so as to maintain flexible strips (5, 6) separated when they are pivoted by return on walls (2, 3) of receptacle (1) characterised in that
    the range of the hinge movement is limited to around 180° and this limited range pivot hinge consists of a notch (8) across the width of one strip (5, 6) set back from a zone (7) where the ends of strips (5, 6) join.
  2. Receptacle (1) according to claim 1 characterized in that strips (5, 6) are fastened on the outer face of walls (2, 3) of receptacle (1).
  3. Receptacle (1) according to claim 2 characterized in that the two pivot hinges have limited range.
  4. Receptacle (1) according to any one of claims 1 to 3, characterized in that it has at least one longitudinal stiffener (9) on its walls (2, 3).
EP04102261A 2003-05-26 2004-05-24 Container with flexible walls Expired - Lifetime EP1481906B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0350178A FR2855501B1 (en) 2003-05-26 2003-05-26 CONTAINER WITH SOFT WALLS AND METHOD FOR MAINTAINING BEANTE ITS OPENING
FR0350178 2003-05-26

Publications (2)

Publication Number Publication Date
EP1481906A1 EP1481906A1 (en) 2004-12-01
EP1481906B1 true EP1481906B1 (en) 2010-05-12

Family

ID=33104531

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Application Number Title Priority Date Filing Date
EP04102261A Expired - Lifetime EP1481906B1 (en) 2003-05-26 2004-05-24 Container with flexible walls

Country Status (5)

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EP (1) EP1481906B1 (en)
AT (1) ATE467572T1 (en)
DE (1) DE602004027102D1 (en)
ES (1) ES2345772T3 (en)
FR (1) FR2855501B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2894512B1 (en) * 2005-12-13 2008-03-14 Jean Jacques Arlotti METHOD AND INSTALLATION OF SOFT WALL BAGS
FR2967652B1 (en) * 2010-11-24 2015-04-17 Andre Flores CONTAINING SOFT WALLS
US10494146B2 (en) * 2012-03-05 2019-12-03 Vishaal B. Verma Flipsnap hold open mechanism for flexible packaging
CN103625755A (en) * 2013-12-11 2014-03-12 陈金水 Automatic-opening packaging bag

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5044774A (en) * 1989-07-03 1991-09-03 Mobil Oil Corporation Hold-open bag top
US5346311A (en) * 1993-09-20 1994-09-13 Siler Buzz L Sealable open-mouth bag
FR2759981B1 (en) 1997-02-27 1999-05-14 Takao Hirai DISPOSABLE CONTAINER IN FLEXIBLE MATERIAL
US6022144A (en) * 1997-06-30 2000-02-08 Arthur D. Little Enterprises, Inc. Closure system for pliable container and method and apparatus for producing same
US6899460B2 (en) * 2001-10-23 2005-05-31 S.C. Johnson Home Storage, Inc. Storage bag with openly biased mouth

Also Published As

Publication number Publication date
ATE467572T1 (en) 2010-05-15
EP1481906A1 (en) 2004-12-01
FR2855501A1 (en) 2004-12-03
DE602004027102D1 (en) 2010-06-24
FR2855501B1 (en) 2006-03-03
ES2345772T3 (en) 2010-10-01

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