WO2011015986A1 - Bag intended for the transport and handling of liquid or quasi-liquid substances and having a structure reinforced with reinforcing strips - Google Patents

Bag intended for the transport and handling of liquid or quasi-liquid substances and having a structure reinforced with reinforcing strips Download PDF

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Publication number
WO2011015986A1
WO2011015986A1 PCT/IB2010/053503 IB2010053503W WO2011015986A1 WO 2011015986 A1 WO2011015986 A1 WO 2011015986A1 IB 2010053503 W IB2010053503 W IB 2010053503W WO 2011015986 A1 WO2011015986 A1 WO 2011015986A1
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WO
WIPO (PCT)
Prior art keywords
bag
reinforcing strips
liquid
sides
reinforcing
Prior art date
Application number
PCT/IB2010/053503
Other languages
French (fr)
Inventor
Stéphane Levy
Piero Schinasi
Original Assignee
Codefine S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Codefine S.A. filed Critical Codefine S.A.
Publication of WO2011015986A1 publication Critical patent/WO2011015986A1/en

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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
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1618—Flexible intermediate bulk containers [FIBC] double-walled or with linings
    • 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
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1618—Flexible intermediate bulk containers [FIBC] double-walled or with linings
    • B65D88/1625—Flexible intermediate bulk containers [FIBC] double-walled or with linings with stiffening rigid means between the walls
    • 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
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1631—Flexible intermediate bulk containers [FIBC] with shape keeping flexible elements

Definitions

  • Bag intended for the transport and handling of liquid or quasi-liquid substances having a structure reinforced by reinforcement strips
  • the present invention relates to a bag for the transport and handling of liquid or quasi-liquid substances having a reinforced structure.
  • the bags of this category are generally called “big bags” or “bag in box” in industry and transport, because they are intended to carry a volume of product of the order of one cubic meter, even more, and they weigh, when loaded, a ton or more.
  • bag in box generally comprise an outer envelope stiffened by various materials and an inner envelope, or “liner”, consisting of a film ensuring the sealing of the device.
  • liner an inner envelope
  • Such "bag in boxes” have in particular been the subject of international patent application WO 2009/010928 filed in the name of the Applicant. The skilled person may usefully refer to it to obtain any additional information on this subject.
  • This type of bag being intended to travel in land or sea vehicles, is often subject to significant amplitudes of movement. This generates wave effects of the product contained inside the bag. These wave effects in turn cause the liner to move. During heavy acceleration or deceleration of the vehicle, the risk is therefore large that the liner is ejected out of the bag or a tear occurs in the bag or liner.
  • the object of the present invention is therefore to propose a simple and inexpensive solution to the problems mentioned above.
  • a bag for the transport and handling of liquid or quasi-liquid substances said bag having at least one bottom and four sides and being provided with a sealed inner envelope with of filling members, characterized in that at least two reinforcing strips are arranged inside the bag and around the inner casing so as to form between them an X crossing above and below of the inner envelope in the position of use of the bag.
  • the reinforcing strips may be fabric. They can be sewn on the sides of the bag, preferably according to the same seam lines that separate housing formed in an outer envelope of the bag and intended to receive reinforcing plates.
  • the seam lines connecting each of the reinforcing strips to the sides of the bag may be arranged to define between them an octagonal base cylinder, said octagonal base being able to be inscribed in a square so that the distance separating each of the vertices of the the octagon of the vertex of the nearest square is substantially identical and / or the distance separating each vertex of the octagon from the vertex of the nearest square can be chosen substantially equal to a quarter of the length of the sides of the square.
  • the bag may be provided with a reinforcing plate implanted in its bottom, said reinforcing plate may be octagonal.
  • the bag of the present invention will have increased rigidity when filled. Indeed, the reinforcing strips disposed above and below the inner casing of the bag will gradually be tensioned as the bag is filled. So, in the position completely filled with the bag, the reinforcing strips will be sufficiently stretched so that the inner casing is held in position by the effect of the cross formed in the lower part of the bag and portions of reinforcing strips arranged along the envelope internal, over its entire height and is limited in amplitude in its movements upwards by the effect of the cross formed in the upper part of the bag. Liquids or semi-liquids exerting pressure towards the outside walls of said bag in box, the lower and upper crosses are naturally tensioned so as to exert their stiffening role.
  • the upper cross energized prevents the inner envelope, when the bags are stacked, to abut against the upper bag the risk of tearing.
  • FIG. 1 shows a schematic perspective view of a bag according to the invention
  • FIG. 2 shows a top view of the bag according to the invention
  • This bag 1 of substantially cubic shape has an outer envelope formed of four lateral sides 2 and a bottom 3 joining these four sides. At the top of the bag is disposed an overhanging collar 4, facing the inside of the bag.
  • This flange 4 is formed of extensions of the fabric pieces forming the sides 2 of the bag, said extensions being joined by a seam along the edges 5 of the flange 4.
  • the four edges 5 are located on straight lines which, if extended up, would cut at the same point and form a pyramid. As mentioned in the patent application WO 2009/010928, these ridges 5 can be used to support lifting belts (not shown) so as to allow handling of the bag by means of a forklift.
  • a sealed inner envelope (not shown) provided with filling members and possibly emptying and intended to contain liquid or semi-liquid products.
  • the emptying members may in particular consist of a valve fixed on the periphery of the inner casing, said valve being able to be introduced through an opening 6 made on one of the sides 2 of the outer casing so as to be accessible to the outside. outside of the bag.
  • Said inner envelope will be disposed inside the bag 1 so as to be surrounded by reinforcing strips 7 disposed inside the outer casing of the bag 1.
  • These reinforcing strips 7 will advantageously be formed of fabric, especially in polypropylene. They may be formed of one or more pieces of fabric connected together, in particular by means of transverse seams.
  • Each strip 7 describes a closed loop extending from the bottom 3 of the bag to the top 3 'of the bag, the loop forming a substantially rectangular base portion of the cylinder.
  • the reinforcing strips 7 intersect by forming an X or a cross below the inner envelope, that is, to say at the level of bottom 3, and above the inner envelope, that is to say at the top 3 '. To do this, it will be advantageous to sew the side edges of the strips 7 on the sides 2 of the bag.
  • the seam lines 8 thus formed will extend substantially over the entire height of the bag and in a direction substantially perpendicular to the bottom 3 of the bag in the position of use of the bag, that is to say when it is totally filled or being filled. It is obvious that, once emptied of its contents, the bag will be folded on itself so as to limit as much as possible its size and thus facilitate its storage. In this case, the general arrangement of the bag as explained above will no longer be valid.
  • the seam lines 8 define between them a geometric shape substantially comparable to an octagonal cylinder.
  • the Applicant has found that it was advantageous to arrange the reinforcing strips 7 so as to align them substantially with the vertical planes passing through the two lateral edges 9 located on diagonally opposite corners of the bag. In this position, the strips 7 form an angle with the sides 2 of the bag so as to leave an empty vertical column 10 at each corner of the bag, the column 10 having a substantially triangular base.
  • the seam lines 8 connecting the reinforcing strips 7 to the sides 2 of the bag with the seam lines separating housings formed in an outer envelope of the double-walled bag, said housings being intended to receive reinforcing plates.
  • d1 is substantially equal to half the distance d2 separating two adjacent vertices of the octagon, positioned on the same side of the square. In this case, d1 is therefore substantially equal to a quarter of the length of the sides of the square.
  • the reinforcing strips as stiffening means complementary to a bag structure having a bottom and / or a lid.
  • this could consist in placing a reinforcing plate (not shown) in the bottom 3 of the bag, said plate preferably having an octagonal shape substantially coincident with that defined by the seam lines.

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

Abstract

The invention relates to a bag (1) for transporting and handling liquid or quasi-liquid substances, comprising at least a base (3) and four sides (2) and being provided with a sealed inner casing including filling members. According to the invention, at least two reinforcing strips (7) are disposed around the inner casing inside the bag, intersecting above and below said inner casing in the bag use position such as to form a cross.

Description

Sac destiné au transport et à la manipulation de substances liquides ou quasi- liquides possédant une structure renforcée par des bandes de renfort  Bag intended for the transport and handling of liquid or quasi-liquid substances having a structure reinforced by reinforcement strips
Domaine technique Technical area
La présente invention concerne un sac destiné au transport et à la manipulation de substances liquides ou quasi-liquides possédant une structure renforcée. Les sacs de cette catégorie sont généralement appelés "big bags" ou "bag in box" dans les milieux de l'industrie et des transports, du fait qu'ils sont destinés à transporter un volume de produit de l'ordre du mètre cube, voire plus, et qu'ils pèsent, une fois chargés, une tonne ou plus. The present invention relates to a bag for the transport and handling of liquid or quasi-liquid substances having a reinforced structure. The bags of this category are generally called "big bags" or "bag in box" in industry and transport, because they are intended to carry a volume of product of the order of one cubic meter, even more, and they weigh, when loaded, a ton or more.
Etat de la technique Les "bag in box" comportent en général une enveloppe extérieure rigidifiée par divers matériaux et une enveloppe interne, ou "liner", constituée d'un film assurant l'étanchéité du dispositif. De tels "bag in box" ont notamment fait l'objet de la demande de brevet internationale WO 2009/010928 déposée au nom de la Demanderesse. L'homme du métier pourra utilement s'y référer pour obtenir d'éventuels compléments d'information à ce sujet. State of the art The "bag in box" generally comprise an outer envelope stiffened by various materials and an inner envelope, or "liner", consisting of a film ensuring the sealing of the device. Such "bag in boxes" have in particular been the subject of international patent application WO 2009/010928 filed in the name of the Applicant. The skilled person may usefully refer to it to obtain any additional information on this subject.
Ce type de sacs, étant destiné à voyager à bord de véhicules terrestres ou maritimes, est souvent soumis à des amplitudes de mouvement importantes. Ceci engendre des effets de vague du produit contenu à l'intérieur du sac. Ces effets de vague provoquent à leur tour un déplacement du liner. Lors des fortes accélérations ou décélérations du véhicule, le risque est donc grand que le liner soit éjecté hors du sac ou qu'une déchirure se produise au niveau du sac ou du liner.  This type of bag, being intended to travel in land or sea vehicles, is often subject to significant amplitudes of movement. This generates wave effects of the product contained inside the bag. These wave effects in turn cause the liner to move. During heavy acceleration or deceleration of the vehicle, the risk is therefore large that the liner is ejected out of the bag or a tear occurs in the bag or liner.
En outre, le gerbage des sacs dans certaines conditions, notamment le transport, ne peut se faire que par l'usage d'un couvercle, ce dernier étant formé notamment d'une plaque de renfort, de manière à éviter que le bag in box positionné ou entreposé sur un autre bag in box endommage le bag in box de la position inférieure et en particulier déchire l'enveloppe interne. Cette solution présente toutefois l'inconvénient d'alourdir la structure du sac et d'augmenter son coût de revient. In addition, the stacking of the bags under certain conditions, including transport, can only be done by the use of a lid, the latter being formed in particular of a reinforcing plate, so as to avoid that the bag in box positioned or stored on another bag in box damages the bag in box of the lower position and in particular tears the inner envelope. This solution However, this has the disadvantage of weighing down the structure of the bag and increasing its cost.
Divulgation de l'invention Disclosure of the invention
L'objet de la présente invention est donc de proposer une solution simple et peu onéreuse aux problèmes mentionnés précédemment. The object of the present invention is therefore to propose a simple and inexpensive solution to the problems mentioned above.
A cet effet, conformément à l'invention, il est proposé un sac destiné au transport et à la manutention de substances liquides ou quasi-liquides, ledit sac comportant au moins un fond et quatre côtés et étant pourvu d'une enveloppe interne étanche dotée d'organes de remplissage, caractérisé en ce qu'au moins deux bandes de renfort sont disposées à l'intérieur du sac et autour de l'enveloppe interne de manière à former entre elle un X en se croisant au- dessus et au-dessous de l'enveloppe interne dans la position d'utilisation du sac.  For this purpose, according to the invention, there is provided a bag for the transport and handling of liquid or quasi-liquid substances, said bag having at least one bottom and four sides and being provided with a sealed inner envelope with of filling members, characterized in that at least two reinforcing strips are arranged inside the bag and around the inner casing so as to form between them an X crossing above and below of the inner envelope in the position of use of the bag.
Les bandes de renfort peuvent être en tissu. Elles peuvent être cousues sur les côtés du sac, de préférence selon les mêmes lignes de couture qui séparent des logements formés dans une enveloppe externe du sac et destinés à recevoir des plaques de renfort.  The reinforcing strips may be fabric. They can be sewn on the sides of the bag, preferably according to the same seam lines that separate housing formed in an outer envelope of the bag and intended to receive reinforcing plates.
Les lignes de couture reliant chacune des bandes de renfort aux côtés du sac peuvent être agencées de façon à définir entre elles un cylindre à base octogonale, ladite base octogonale pouvant être inscrite dans un carré de telle sorte que la distance séparant chacun des sommets de l'octogone du sommet du carré le plus proche est sensiblement identique et/ou la distance séparant chacun des sommets de l'octogone du sommet du carré le plus proche pouvant être choisie sensiblement égale au quart de la longueur des côtés du carré.  The seam lines connecting each of the reinforcing strips to the sides of the bag may be arranged to define between them an octagonal base cylinder, said octagonal base being able to be inscribed in a square so that the distance separating each of the vertices of the the octagon of the vertex of the nearest square is substantially identical and / or the distance separating each vertex of the octagon from the vertex of the nearest square can be chosen substantially equal to a quarter of the length of the sides of the square.
Le sac peut être pourvu d'une plaque de renfort implantée dans son fond, ladite plaque de renfort pouvant être de forme octogonale.  The bag may be provided with a reinforcing plate implanted in its bottom, said reinforcing plate may be octagonal.
Ainsi configuré, le sac de la présente invention possédera une rigidité accrue une fois rempli. En effet, les bandes de renfort disposées au-dessus et au-dessous de l'enveloppe interne du sac seront progressivement mises en tension au fur et à mesure du remplissage du sac. Ainsi, dans la position totalement remplie du sac, les bandes de renfort seront suffisamment tendues pour que l'enveloppe interne soit maintenue en position par l'effet de la croix formée dans la partie inférieure du sac et des portions de bandes de renfort disposées le long de l'enveloppe interne, sur toute sa hauteur et soit limitée en amplitude dans ses mouvements vers le haut par l'effet de la croix formée dans la partie supérieure du sac. Les liquides ou semi-liquides exerçant une pression vers l'extérieur des parois dudit bag in box, les croix inférieures et supérieures sont naturellement mises en tension de manière à exercer leur rôle rigidifiant. Thus configured, the bag of the present invention will have increased rigidity when filled. Indeed, the reinforcing strips disposed above and below the inner casing of the bag will gradually be tensioned as the bag is filled. So, in the position completely filled with the bag, the reinforcing strips will be sufficiently stretched so that the inner casing is held in position by the effect of the cross formed in the lower part of the bag and portions of reinforcing strips arranged along the envelope internal, over its entire height and is limited in amplitude in its movements upwards by the effect of the cross formed in the upper part of the bag. Liquids or semi-liquids exerting pressure towards the outside walls of said bag in box, the lower and upper crosses are naturally tensioned so as to exert their stiffening role.
De plus, l'enveloppe interne une fois remplie, la croix supérieure mise sous tension évite à l'enveloppe interne, lorsque les sacs sont empilés, de venir buter contre le sac supérieur au risque d'un déchirement.  In addition, the inner envelope once filled, the upper cross energized prevents the inner envelope, when the bags are stacked, to abut against the upper bag the risk of tearing.
On évite également le risque de déchirement de l'enveloppe interne du sac du fait que, dans l'invention, les bandes de renfort emprisonnent totalement cette enveloppe et l'empêchent de se déplacer lors des mouvements de vague générés lors du transport. Ceci atténue également l'amplitude des mouvements de vague du fait que l'enveloppe interne n'accompagne pas ce mouvement.  It also avoids the risk of tearing of the inner envelope of the bag because, in the invention, the reinforcing strips completely trap this envelope and prevent it from moving during the wave movements generated during transport. This also attenuates the amplitude of the wave movements because the inner envelope does not accompany this movement.
Par ailleurs, si lors de la manipulation d'un des sacs, l'opérateur renverse accidentellement le sac, l'enveloppe interne, maintenue solidement par les bandes de renfort, restera à l'intérieur du sac et ne se désolidarisa pas totalement de l'enveloppe externe, contrairement aux sacs utilisés jusqu'à présent. Les conditions de sécurité lors de la manipulation de ce type de sacs sont donc améliorées.  Moreover, if during the handling of one of the bags, the operator accidentally spills the bag, the inner envelope, held securely by the reinforcing strips, will remain inside the bag and does not separate completely from the bag. outer shell, unlike the bags used so far. The safety conditions when handling this type of bag are therefore improved.
Brève description des dessins Brief description of the drawings
D'autres avantages et caractéristiques de la présente invention seront mieux compris à la lecture d'un mode particulier de réalisation de l'invention et en référence aux dessins dans lesquels: Other advantages and features of the present invention will be better understood on reading a particular embodiment of the invention and with reference to the drawings in which:
- la figure 1 montre une vue schématique en perspective d'un sac selon l'invention;  - Figure 1 shows a schematic perspective view of a bag according to the invention;
- la figure 2 montre une vue de dessus du sac selon l'invention; Description détaillée d'un mode d'exécution de l'invention - Figure 2 shows a top view of the bag according to the invention; Detailed description of an embodiment of the invention
En référence aux figures 1 et 2, il est représenté un sac conforme à l'invention. With reference to Figures 1 and 2, there is shown a bag according to the invention.
Ce sac 1 de forme sensiblement cubique possède une enveloppe externe formée de quatre côtés latéraux 2 et d'un fond 3 joignant ces quatre côtés. À la partie supérieure du sac est disposée une collerette en surplomb 4, orientée vers l'intérieur du sac. Cette collerette 4 est formée de prolongements des pièces de toile formant les côtés 2 du sac, lesdits prolongements étant réunis par une couture selon les arêtes 5 de la collerette 4. Les quatre arêtes 5 sont situées sur des lignes droites qui, si on les prolongeait vers le haut, se couperaient en un même point et formeraient une pyramide. Comme mentionné dans la demande de brevet WO 2009/010928, ces arêtes 5 pourront servir de support à des ceintures de levage (non représentées) de manière à permettre la manutention du sac au moyen d'un chariot élévateur.  This bag 1 of substantially cubic shape has an outer envelope formed of four lateral sides 2 and a bottom 3 joining these four sides. At the top of the bag is disposed an overhanging collar 4, facing the inside of the bag. This flange 4 is formed of extensions of the fabric pieces forming the sides 2 of the bag, said extensions being joined by a seam along the edges 5 of the flange 4. The four edges 5 are located on straight lines which, if extended up, would cut at the same point and form a pyramid. As mentioned in the patent application WO 2009/010928, these ridges 5 can be used to support lifting belts (not shown) so as to allow handling of the bag by means of a forklift.
A l'intérieur du sac est disposée une enveloppe interne étanche (non représentée) dotée d'organes de remplissage et éventuellement de vidange et destinée à contenir des produits liquides ou semi-liquides. Les organes de vidange pourront notamment consister en une vanne fixée sur le pourtour de l'enveloppe interne, ladite vanne pouvant être introduite à travers une ouverture 6 pratiquée sur l'un des côtés 2 de l'enveloppe externe de manière à être accessible à l'extérieur du sac. Ladite enveloppe interne sera disposée à l'intérieur du sac 1 de manière à être entourée par des bandes de renfort 7 disposées à l'intérieur de l'enveloppe externe du sac 1. Ces bandes de renfort 7 seront avantageusement formées de tissu, notamment en polypropylène. Elles pourront être formées d'un ou plusieurs morceaux de tissu reliés ensemble, notamment au moyen de coutures transversales. Chaque bande 7 décrit une boucle fermée s'étendant depuis le fond 3 du sac jusqu'au sommet 3' du sac, la boucle formant une portion de cylindre à base sensiblement rectangulaire. Pour garantir un bon maintien de l'enveloppe interne à l'intérieur des bandes de renfort, il est essentiel que les bandes de renfort 7 se croisent en formant un X ou une croix au-dessous de l'enveloppe interne, c'est-à-dire au niveau du fond 3, et au-dessus de l'enveloppe interne, c'est-à-dire au niveau du sommet 3'. Pour ce faire, il sera avantageux de coudre les bords latéraux des bandes 7 sur les côtés 2 du sac. Les lignes de couture 8 ainsi formées s'étendront sensiblement sur toute la hauteur du sac et selon une direction sensiblement perpendiculaire au fond 3 du sac dans la position d'utilisation du sac, c'est-à-dire lorsque celui-ci est totalement rempli ou en cours de remplissage. Il est évident que, une fois vidé de son contenu, le sac sera replié sur lui-même de façon à limiter au maximum son encombrement et faciliter ainsi son stockage. Dans ce cas, la disposition générale du sac telle qu'explicitée précédemment ne sera plus valable. Dans la position d'utilisation du sac, les lignes de couture 8 définissent entre elles une forme géométrique sensiblement comparable à un cylindre à base octogonale. Pour améliorer encore le maintien du sac dans sa position d'utilisation, la Demanderesse a constaté qu'il était avantageux de disposer les bandes de renfort 7 de manière à les aligner sensiblement avec les plans verticaux passant par les deux arêtes latérales 9 situées sur des coins diagonalement opposés du sac. Dans cette position, les bandes 7 forment un angle avec les côtés 2 du sac de telle sorte à laisser une colonne verticale vide 10 à chaque coin du sac, la colonne 10 ayant une base sensiblement triangulaire. Ainsi, lorsque l'enveloppe interne du sac sera remplie avec le produit liquide ou semi-liquide à transporter, elle appuiera sur les bandes de renfort 7, lesquelles agiront sur les coutures 8, en tirant celles-ci vers l'intérieur du sac, ce qui permettra de combattre la tendance naturelle des quatre côtés du sac une fois rempli à former un bombage vers l'extérieur. Ainsi, on parvient à mieux maintenir sur toute la hauteur du sac une section carrée de celui-ci. Inside the bag is disposed a sealed inner envelope (not shown) provided with filling members and possibly emptying and intended to contain liquid or semi-liquid products. The emptying members may in particular consist of a valve fixed on the periphery of the inner casing, said valve being able to be introduced through an opening 6 made on one of the sides 2 of the outer casing so as to be accessible to the outside. outside of the bag. Said inner envelope will be disposed inside the bag 1 so as to be surrounded by reinforcing strips 7 disposed inside the outer casing of the bag 1. These reinforcing strips 7 will advantageously be formed of fabric, especially in polypropylene. They may be formed of one or more pieces of fabric connected together, in particular by means of transverse seams. Each strip 7 describes a closed loop extending from the bottom 3 of the bag to the top 3 'of the bag, the loop forming a substantially rectangular base portion of the cylinder. In order to ensure proper retention of the inner envelope within the reinforcement strips, it is essential that the reinforcing strips 7 intersect by forming an X or a cross below the inner envelope, that is, to say at the level of bottom 3, and above the inner envelope, that is to say at the top 3 '. To do this, it will be advantageous to sew the side edges of the strips 7 on the sides 2 of the bag. The seam lines 8 thus formed will extend substantially over the entire height of the bag and in a direction substantially perpendicular to the bottom 3 of the bag in the position of use of the bag, that is to say when it is totally filled or being filled. It is obvious that, once emptied of its contents, the bag will be folded on itself so as to limit as much as possible its size and thus facilitate its storage. In this case, the general arrangement of the bag as explained above will no longer be valid. In the position of use of the bag, the seam lines 8 define between them a geometric shape substantially comparable to an octagonal cylinder. To further improve the retention of the bag in its position of use, the Applicant has found that it was advantageous to arrange the reinforcing strips 7 so as to align them substantially with the vertical planes passing through the two lateral edges 9 located on diagonally opposite corners of the bag. In this position, the strips 7 form an angle with the sides 2 of the bag so as to leave an empty vertical column 10 at each corner of the bag, the column 10 having a substantially triangular base. Thus, when the inner envelope of the bag will be filled with the liquid or semi-liquid product to be transported, it will press on the reinforcing strips 7, which will act on the seams 8, pulling them towards the inside of the bag, This will help combat the natural tendency of the four sides of the bag when filled to bend outward. Thus, it manages to better maintain over the entire height of the bag a square section thereof.
De manière préférentielle, il sera également avantageux de faire coïncider les lignes de couture 8 reliant les bandes de renfort 7 aux côtés 2 du sac avec les lignes de couture séparant des logements formés dans une enveloppe externe du sac, à double paroi, lesdits logements étant destinés à recevoir des plaques de renfort.  Preferably, it will also be advantageous to match the seam lines 8 connecting the reinforcing strips 7 to the sides 2 of the bag with the seam lines separating housings formed in an outer envelope of the double-walled bag, said housings being intended to receive reinforcing plates.
Sur la figure 2, on peut observer la forme en croix définie par les deux bandes de renfort 7 sur la face 3' disposée sur le dessus du sac. Il est évident que la même disposition se retrouve dans le fond 3 du sac. Cette face 3' est elle-même représentée sous la forme d'un carré, dans lequel la croix est inscrite. Les points de contact de la croix avec le carré, correspondant aux positions respectives des lignes de couture 8, définissent, comme vu précédemment, un octogone inscrit dans le carré. Dans la configuration préférentielle représentée, on observe que la distance d1 séparant chacun des sommets de l'octogone du sommet du carré le plus proche est sensiblement identique. En outre, il sera également avantageux de choisir la distance d1 de telle sorte que d1 soit sensiblement égale à la moitié de la distance d2 séparant deux sommets adjacents de l'octogone, positionnés sur le même côté du carré. Dans ce cas, d1 est donc sensiblement égale au quart de la longueur des côtés du carré. In Figure 2, one can observe the cross shape defined by the two reinforcing strips 7 on the face 3 'disposed on the top of the bag. It is obvious that the same provision is found in the bottom 3 of the bag. This face 3 'is itself represented in the form of a square, in which the cross is inscribed. The points of contact of the cross with the square, corresponding to the respective positions of the seam lines 8, define, as previously seen, an octagon inscribed in the square. In the preferred configuration shown, it is observed that the distance d1 separating each vertex of the octagon from the vertex of the nearest square is substantially identical. In addition, it will also be advantageous to choose the distance d1 so that d1 is substantially equal to half the distance d2 separating two adjacent vertices of the octagon, positioned on the same side of the square. In this case, d1 is therefore substantially equal to a quarter of the length of the sides of the square.
Même si l'invention telle qu'exposée ci-dessus permet potentiellement de se passer de fond et de couvercle pour le sac, il pourra également être envisagé d'utiliser les bandes de renfort comme des moyens de rigidification complémentaires à une structure de sac possédant un fond et/ou un couvercle. Dans la configuration particulière représentée sur les figures 1 et 2, cela pourrait consister à placer une plaque de renfort (non représentée) dans le fond 3 du sac, ladite plaque possédant de préférence une forme octogonale sensiblement confondue à celle définie par les lignes de couture 8.  Even if the invention as described above makes it possible to do without bottom and cover for the bag, it may also be envisaged to use the reinforcing strips as stiffening means complementary to a bag structure having a bottom and / or a lid. In the particular configuration shown in FIGS. 1 and 2, this could consist in placing a reinforcing plate (not shown) in the bottom 3 of the bag, said plate preferably having an octagonal shape substantially coincident with that defined by the seam lines. 8.

Claims

REVENDICATIONS
1. Sac (1 ) destiné au transport et à la manutention de substances liquides ou quasi-liquides, ledit sac comportant au moins un fond (3) et quatre côtés (2) et étant pourvu d'une enveloppe interne étanche dotée d'organes de remplissage, caractérisé en ce qu'au moins deux bandes de renfort (7) sont disposées à l'intérieur du sac et autour de l'enveloppe interne de manière à former entre elle un X en se croisant au-dessus et au-dessous de l'enveloppe interne dans la position d'utilisation du sac. 1. Bag (1) for the transport and handling of liquid or quasi-liquid substances, said bag having at least one bottom (3) and four sides (2) and being provided with a tight internal envelope with organs filling device, characterized in that at least two reinforcing strips (7) are arranged inside the bag and around the inner casing so as to form an X between them crossing each other above and below. of the inner envelope in the position of use of the bag.
2. Sac (1 ) selon la revendication précédente, caractérisé en ce que les bandes de renfort (7) sont en tissu.  2. Bag (1) according to the preceding claim, characterized in that the reinforcing strips (7) are fabric.
3. Sac (1 ) selon l'une quelconque des revendications précédentes, caractérisé en ce que les bandes de renfort (7) sont cousues sur les côtés (2) du sac.  3. Bag (1) according to any one of the preceding claims, characterized in that the reinforcing strips (7) are sewn on the sides (2) of the bag.
4. Sac (1 ) selon la revendication précédente, caractérisé en ce que les bandes de renfort (7) sont cousues sur les côtés (2) du sac selon les mêmes lignes de couture (8) qui séparent des logements formés dans une enveloppe externe du sac et destinés à recevoir des plaques de renfort.  4. Bag (1) according to the preceding claim, characterized in that the reinforcing strips (7) are sewn on the sides (2) of the bag according to the same seam lines (8) which separate housing formed in an outer envelope of the bag and intended to receive reinforcing plates.
5. Sac (1 ) selon l'une quelconque des revendications 3 ou 4, caractérisé en ce que les lignes de couture (8) reliant chacune des bandes de renfort (7) aux côtés (2) du sac définissent entre elles un cylindre à base octogonale.  5. Bag (1) according to any one of claims 3 or 4, characterized in that the seam lines (8) connecting each of the reinforcing strips (7) to the sides (2) of the bag define between them a cylinder to octagonal base.
6. Sac (1 ) selon la revendication précédente, caractérisé en ce que la base octogonale du cylindre défini par les lignes de couture (8) est inscrite dans un carré de telle sorte que la distance séparant chacun des sommets de l'octogone du sommet du carré le plus proche est sensiblement identique.  6. Bag (1) according to the preceding claim, characterized in that the octagonal base of the cylinder defined by the seam lines (8) is inscribed in a square so that the distance separating each vertex of the octagon from the top the nearest square is substantially identical.
7. Sac (1 ) selon la revendication précédente, caractérisé en ce que la distance séparant chacun des sommets de l'octogone du sommet du carré le plus proche est sensiblement égale au quart de la longueur des côtés du carré.  7. Bag (1) according to the preceding claim, characterized in that the distance separating each vertex of the octagon from the vertex of the nearest square is substantially equal to one quarter of the length of the sides of the square.
8. Sac (1 ) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est pourvu d'une plaque de renfort implantée dans son fond (3). 8. Bag (1) according to any one of the preceding claims, characterized in that it is provided with a reinforcing plate implanted in its bottom (3).
9. Sac (1 ) selon la revendication précédente, caractérisé en ce que la plaque de renfort est de forme octogonale. 9. Bag (1) according to the preceding claim, characterized in that the reinforcing plate is octagonal.
PCT/IB2010/053503 2009-08-07 2010-08-02 Bag intended for the transport and handling of liquid or quasi-liquid substances and having a structure reinforced with reinforcing strips WO2011015986A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01232/09 2009-08-07
CH12322009A CH701629A2 (en) 2009-08-07 2009-08-07 Bag for transporting and handling liquid or quasi-liquid substances having a reinforced structure of reinforcement strips.

Publications (1)

Publication Number Publication Date
WO2011015986A1 true WO2011015986A1 (en) 2011-02-10

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Application Number Title Priority Date Filing Date
PCT/IB2010/053503 WO2011015986A1 (en) 2009-08-07 2010-08-02 Bag intended for the transport and handling of liquid or quasi-liquid substances and having a structure reinforced with reinforcing strips

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CH (1) CH701629A2 (en)
WO (1) WO2011015986A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0664258A1 (en) * 1994-01-20 1995-07-26 Rexam Mulox Limited Container bag
WO1997020758A1 (en) * 1995-12-04 1997-06-12 Storsack Tradco Limited Flexible container for flowable materials
US5685644A (en) * 1996-05-28 1997-11-11 Jumbo Bag Corporation Bulk cargo bag
WO2009010928A2 (en) 2007-07-16 2009-01-22 Codefine S.A. Bag for transporting and handling liquid or quasi liquid substances

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0664258A1 (en) * 1994-01-20 1995-07-26 Rexam Mulox Limited Container bag
WO1997020758A1 (en) * 1995-12-04 1997-06-12 Storsack Tradco Limited Flexible container for flowable materials
US5685644A (en) * 1996-05-28 1997-11-11 Jumbo Bag Corporation Bulk cargo bag
WO2009010928A2 (en) 2007-07-16 2009-01-22 Codefine S.A. Bag for transporting and handling liquid or quasi liquid substances

Also Published As

Publication number Publication date
CH701629A2 (en) 2011-02-15

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