EP0460039A1 - Pouch made from a heat-sealing material, process for producing such pouch and simultaneous packaging of a product - Google Patents

Pouch made from a heat-sealing material, process for producing such pouch and simultaneous packaging of a product

Info

Publication number
EP0460039A1
EP0460039A1 EP19900903855 EP90903855A EP0460039A1 EP 0460039 A1 EP0460039 A1 EP 0460039A1 EP 19900903855 EP19900903855 EP 19900903855 EP 90903855 A EP90903855 A EP 90903855A EP 0460039 A1 EP0460039 A1 EP 0460039A1
Authority
EP
European Patent Office
Prior art keywords
welds
weld
closing
tubular sheath
longitudinal
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.)
Withdrawn
Application number
EP19900903855
Other languages
German (de)
French (fr)
Inventor
Roland Paulze D Ivoy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0460039A1 publication Critical patent/EP0460039A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2042—Means for altering the cross-section of the tube filling opening prior to transversal sealing, e.g. tube spreading devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2035—Tube guiding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B2220/00—Specific aspects of the packaging operation
    • B65B2220/12—Creating additional longitudinal welds on horizontal or vertical form fill seal [FFS] machines for stiffening packages or for creating package edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2056—Machines for packages of special type or form

Definitions

  • Pocket made of flexible heat-weldable material and method for producing such a pocket and simultaneously packaging a product
  • the present invention relates to a pouch of thermo-weldable material and a method of making such a pouch and simultaneous packaging of a product.
  • Numerous types of bags are already known, produced from a sheet of flexible heat-sealable plastic material.
  • the simplest pocket comprises a tubular sheath closed in a sealed manner by two closing welds extending in the same plane, perpendicular to an axis of the tubular sheath.
  • Such a pocket can be produced very economically, but it has the disadvantage of not standing upright when it is placed on a table so that when it is open and contains a liquid product, it is necessary to place it on a support otherwise the liquid spills when the pocket lies on the table.
  • An object of the invention is to provide a pouch of flexible heat-weldable material which, while being able to be produced very economically, can both stand on a substantially flat surface and be stacked easily. With a view to achieving this aim, a pocket made of flexible material is provided according to the invention.
  • the heat-weldable tube comprising a tubular sheath closed in a sealed manner by two closing welds extending in the same plane perpendicular to an axis dp.
  • the closing weld and the retaining weld have a cross arrangement ensuring at least partial stiffening of the wall of the pocket and allowing the latter to stand up stably on the wall portion thus stiffened.
  • the pocket has three transverse holding welds across three horns.
  • two transverse holding welds associated with the same closing weld provide a particularly stable substantially rectangular configuration and the third transverse holding weld also provides a ri gidi fi cat i on of the pocket while delimiting a gripping horn. the pocket.
  • the pocket has longitu ⁇ dinale holding welds connecting together two adjacent wall portions of the tubular sheath and extending in a direction perpendicular to the closure welds and the welds transverse support.
  • two longitudinal holding welds connect the ends of two adjacent transverse holding welds.
  • the various characteristics of the invention all tend to give the pocket a shape similar to that of a parelelipiped so that several pockets can be stacked in a particularly stable manner like bricks. .
  • this relates to a process for producing a pouch made of flexible heat-sealable plastic material and a simultaneous packaging of a product, this process comprising the steps of: - folding a strip of supple material t ermo-weldable onto itself to form a tubular sheath,
  • tubular sheath perpendicular to a longitudinal axis thereof according to a closing weld spaced from one end of the longitudinal holding welds
  • FIG. 2 is a diagrammatic representation of certain steps of the method according to the invention.
  • FIG. 4 is a schematic sectional view along the line IV-IV of FIG. 2,
  • FIG. 5 is a schematic sectional view along the line V-V of FIG. 2,
  • FIG. 6 is a schematic sectional view along line VI-VI of Figure 2.
  • the bag according to the invention is produced from a tubular sheath generally designated at 1 in flexible heat-sealable plastic material, for example a film of polyethylene, closed in leaktight manner by two welds of closure 2 extending in the same plane r perpendi eulai rement to an axis of the tubular sheath and forming horns 3 with the tubular sheath.
  • flexible heat-sealable plastic material for example a film of polyethylene
  • the pocket comprises three transverse holding welds 4 extending perpendicular to the plane of the closing welds 2 and crossing the closing welds in the vicinity of one of their ends.
  • the lower transverse retaining welds realize with the lower closing weld 2 a cross configuration ensuring a partial stiffness of the lower face of the pocket and stabilizing it sufficiently so that the pocket remains upright when it is disposed on a substantially flat surface even when the pocket has been opened and has been emptied of part of its contents.
  • the pocket also comprises four longitudinal holding welds 5 extending in a direction perpendicular to the closing welds and to the transverse holding welds from the ends of the transverse holding welds.
  • the longitudinal holding welds 5 connect the ends of the two transverse holding welds 4.
  • the transverse holding welds 4 and the longitudinal holding welds 5 then produce a configuration of rigidification rectan ⁇ gular tending to maintain the pocket in a generally genera l le L tocherdique.
  • the pouch according to the invention is particularly intended for the packaging of liquid products such as milk or other food drinks to be conditioned under aseptic conditions.
  • the horns 3 for which a transverse holding weld is produced are preferably emptied of any liquid so that they are in the form of a flat tongue which can be folded down on an adjacent face of the pocket and glued to it to further increase the rigidity of the pocket.
  • the fourth horn 3 is deliberately kept without transverse holding weld 4 so that it can be cut and serve as a pouring spout for the liquid.
  • the bag according to the invention is preferably produced according to a continuous process, the main steps of which are illustrated in FIGS. 2 to 6.
  • a strip of flexible heat-weldable material is folded back on itself to form a tubular sheath 1.
  • the two edges of the strip of flexible material are brought one on the other in order to be fixed according to the configuration known as leather and skin.
  • the sheath thus formed passes through shaping plates 6 arranged in staggered rows to form four longitudinal folds on a wall part of the tubular sheath 1.
  • the tubular sheath 1 is driven step by step and, after having been shaped, it is welded according to a longitudinal weld 7, produced by means of a heating electrode 8 disposed outside the sheath and cooperating with a plate d 'support 9 disposed inside the sheath, to connect together two facing wall portions 10 adjacent to the edges of the strip of flexible material.
  • the long tudinal holding welds 5 are produced by means of heating electrodes 11 connecting between them wall portions 12 of the adjacent tubular sheath, along the longitudinal folds formed during the step precedent, over a length substantially equal to the height desired for the pocket in a stable position on a flat surface.
  • two longitudinal folds located on the same side of the sheath are welded simultaneously. This of course presupposes that the sheath material cannot be welded from one fold to the other, that is to say skin on skin. If the flexible material is weldable skin on skin, a non-adhesive plate must be provided between the folds, for example by extending the shaping plate 6 external to the sheath up to the welding station.
  • the tubular sheath is welded perpendicular to its longitudinal axis according to a closing weld 2 spaced from one end of the longitudinal holding welds 5.
  • the desired quantity of product to be conditioned is then introduced into the sheath by means of a feed rod 13 suitably connected to a feed device not shown.
  • two closing welds 2 are immediately adjacent which are spaced from one end of the longitudinal holding welds and the sheath is cut along a cutting line 14 between the immediately adjacent closing welds so as to detach a pocket which has just been filled from the rest of the sheath.
  • the pocket thus produced and filled is preferably arranged astride a profile 15 comprising an upper face having a horizontal planar portion 16 connected to two portions of oblique planar walls 17 at an obtuse outgoing angle.
  • the horns 3 which bear on the profile 15 are crushed by means of buffers 18 to expel the liquid contained in the horns, and the transverse holding welds 4, connecting two parts of the horn wall opposite, are produced by means of a heating electrode 19 carried by the pads 18.
  • the upper transverse holding weld is produced by means of a pad 20 comprising a heating electrode 21 and mounted movable relative to a fixed pad 22.
  • the invention is not limited to the embodiment described and it is possible to make variant embodiments without departing from the scope of the invention.
  • the pocket according to the invention has been described in connection with three transverse holding welds and four longitudinal holding welds, the pocket according to the invention can be produced with a different number of holding welds depending on the degree of stiffening and stability that one wishes to obtain.
  • the pocket has been described in connection with a tubular sheath formed by folding a flexible material and welding of the leather and skin type
  • the pocket according to the invention can also be produced from a sheath extruded directly in tubular form or from a sheath produced by welding the edge of a strip of flexible material according to the leather and leather mode.

Abstract

La poche selon l'invention est réalisée à partir d'une gaine tubulaire (1) fermée de façon étanche par deux soudures de fermeture (2) perpendiculaires à l'axe longitudinal de la gaine. Selon l'invention, elle comporte au moins une, de préférence trois, soudures de maintien transversales (4) perpendiculaires au plan des soudures de fermeture et croisant les soudures de fermeture au voisinage de leur extrémité.The pocket according to the invention is produced from a tubular sheath (1) closed in a sealed manner by two closing welds (2) perpendicular to the longitudinal axis of the sheath. According to the invention, it comprises at least one, preferably three, transverse holding welds (4) perpendicular to the plane of the closing welds and crossing the closing welds in the vicinity of their end.

Description

i i
Poche en matière souple thermo-soudable, et procédé de réalisation d'une telle poche et de conditionnement simultané d'un produit-Pocket made of flexible heat-weldable material, and method for producing such a pocket and simultaneously packaging a product
La présente invention concerne une poche en matière soupLe thermo-soudable et un procédé de réalisa¬ tion d'une telle poche et de conditionnement simultané d'un produit. On connaît déjà de nombreux types de poches réalisées à partir d'une feuille de matière plastique souple thermo-soudable. La poche la plus simple comporte une gaine tubulaire fermée de façon étanche par deux soudures de fermeture s'étendant dans un même plan, perpendiculairement à un axe de la gaine tubulaire.The present invention relates to a pouch of thermo-weldable material and a method of making such a pouch and simultaneous packaging of a product. Numerous types of bags are already known, produced from a sheet of flexible heat-sealable plastic material. The simplest pocket comprises a tubular sheath closed in a sealed manner by two closing welds extending in the same plane, perpendicular to an axis of the tubular sheath.
Une telle poche peut être réalisée de façon très économique mais elle présente l'inconvénient de ne pas se tenir debout lorsqu'elle est posée sur une table de sorte que lorsqu'elle est ouverte et contient un produit liquide, il est nécessaire de la poser sur un support faute de quoi le liquide se répand lorsque la poche se couche sur la table.Such a pocket can be produced very economically, but it has the disadvantage of not standing upright when it is placed on a table so that when it is open and contains a liquid product, it is necessary to place it on a support otherwise the liquid spills when the pocket lies on the table.
On a également envisagé de réaliser des poches en forme de berlingots dans lesquels les soudures de ferme- ture sont orthogonales, ou des poches coniques comportant un fond en forme de V inversé. Toutefois, en raison de La forme particulière de ces poches, celles-ci ne sont pas aisément manipulabiés . En particulier, elles ne sont pas aisément empilables pour effectuer Leur transport. Un but de l'invention -est de proposer une poche en matière souple thermo-soudable qui, tout en pouvant être réalisée de façon très économique, puisse à La fois tenir debout sur une surface sensiblement plane et être emp lée de façon aisée. En vue de la réalisation de ce but, on prévoit selon L'invention une poche en matière soupLe thermo-soudable comportant une gaine tubulaire fermée de façon étanche par deux soudures de fermeture s'étendant dans un même plan perpendiculairement à un axe dp La gaine tubulaire et formant des cornes avec la gaine tubulaire, cette poche comportant en outre au moins une soudure de maintien trans¬ versale reliant entre elles deux parties de paroi de corne en regard, s'étendant perpendicula rement au plan des sou- dures de fermeture et croisant une soudure de fermeture au voisinage d'une extrémité de celle-ci .It has also been envisaged to produce pockets in the form of cartons in which the closing welds are orthogonal, or conical pockets comprising a bottom in the form of an inverted V. However, due to the particular shape of these pockets, these are not easily manipulated. In particular, they are not easily stackable for carrying out their transport. An object of the invention is to provide a pouch of flexible heat-weldable material which, while being able to be produced very economically, can both stand on a substantially flat surface and be stacked easily. With a view to achieving this aim, a pocket made of flexible material is provided according to the invention. The heat-weldable tube comprising a tubular sheath closed in a sealed manner by two closing welds extending in the same plane perpendicular to an axis dp. The sheath tubular and forming horns with the tubular sheath, this pocket further comprising at least one transverse retaining weld connecting two facing wall parts of the horn, extending perpendicularly to the plane of the closing welds and crossing a closing weld in the vicinity of one end thereof.
Ainsi, la soudure de fermeture et la soudure de maintien ont une disposition en croix assurant une rigidi- fication au moins partielle de la paroi de la poche et permettant à celle-ci de tenir debout de façon stable sur la portion de paroi ainsi rigidifiée.Thus, the closing weld and the retaining weld have a cross arrangement ensuring at least partial stiffening of the wall of the pocket and allowing the latter to stand up stably on the wall portion thus stiffened.
Selon une version avantageuse de l'invention, La poche comporte trois soudures de maintien transversales en travers de trois cornes. Ainsi, deux soudures de maintien transversales associées à une même soudure de fermeture réalisent une conf guration sensiblement rectangulaire particulièrement stable et La troisième soudure de maintien transversale assure elle aussi une ri gidi fi cat i on de La poche tout en délimitant une corne de préhension de la poche.According to an advantageous version of the invention, the pocket has three transverse holding welds across three horns. Thus, two transverse holding welds associated with the same closing weld provide a particularly stable substantially rectangular configuration and the third transverse holding weld also provides a ri gidi fi cat i on of the pocket while delimiting a gripping horn. the pocket.
Selon un mode de réalisation préféré de l'in¬ vention, la poche comporte des soudures de maintien longitu¬ dinales reliant entre elles deux parties de paroi adjacente de la gaine tubulaire et s'étendant selon une direction perpendiculaire aux soudures de fermeture et aux soudures de maintien transversales. De préférence, deux soudures de maintien longitudinales relient les extrémités de deux soudures de maintien transversales adjacentes. Ainsi, on augmente encore la structuration de la poche et celle-ci est donc particulièrement stable.According to a preferred embodiment of the in¬ vention, the pocket has longitu¬ dinale holding welds connecting together two adjacent wall portions of the tubular sheath and extending in a direction perpendicular to the closure welds and the welds transverse support. Preferably, two longitudinal holding welds connect the ends of two adjacent transverse holding welds. Thus, the structure of the pocket is further increased and the pocket is therefore particularly stable.
Par ailleurs, on remarque que les différentes caractéristiques de L'invention tendent toutes à donner à la poche une forme voisine d'un para l lélipipède de sorte que plusieurs poches peuvent être empi lées de façon particu- lière ent stable à la façon de briques.Furthermore, it should be noted that the various characteristics of the invention all tend to give the pocket a shape similar to that of a parelelipiped so that several pockets can be stacked in a particularly stable manner like bricks. .
Selon un autre aspect de l'invention, celle- ci concerne un procédé de réalisation d'une poche en matière plastique souple thermo-soudable et un conditionnement simultané d'un produit, ce procédé comportant les étapes de : - replier une bande de matière soupLe t ermo-soudable sur elle-même pour former une gaine tubulaire,According to another aspect of the invention, it this relates to a process for producing a pouch made of flexible heat-sealable plastic material and a simultaneous packaging of a product, this process comprising the steps of: - folding a strip of supple material t ermo-weldable onto itself to form a tubular sheath,
- réaliser au moins un pli longitudinal sur une partie de paroi de la gaine tubulaire,- make at least one longitudinal fold on a part of the wall of the tubular sheath,
- souder la bande de matière souple selon deux parties de paroi en regard adjacentes à des bords de la bande de matière souple, et selon deux parties de parois adja¬ centes Le long du pli longitudinal pour réaliser des sou¬ dures de maintien longi udinales,- weld the strip of flexible material along two facing wall portions adjacent to the edges of the strip of flexible material, and along two portions of adjacent walls along the longitudinal fold to make long-lasting retaining welds,
- souder, selon une phase de démarrage du procédé, La gaine tubulaire perpendiculairement à un axe longitudinal de celle-ci selon une soudure de fermeture espacée d'une extrémité des soudures de maintien longitudinales,- welding, according to a process start-up phase, the tubular sheath perpendicular to a longitudinal axis thereof according to a closing weld spaced from one end of the longitudinal holding welds,
- remplir la gaine tubulaire avec une quantité de produit à conditionner, - souder la gaine tubulaire selon deux soudures de fermeture immédiatement adjacentes parallèles à la soudure de ferme¬ ture déjà réalisée, et espacées d'une extrémité des soudures de maintien longitudinales, et couper La gaine entre les deux soudures de fermeture immédiatement adjacentes, - écraser au moins une corne de la poche et réaliser une soudure de maintien transversale, reliant entre elles deux parties de paroi de corne en regard, s'étendant perpendiculairement à une soudure de fermeture et croisant celle-ci au voisinage d'une extrémité. D'autres caractéristiques et avantages de l'invention ressortiront à la lecture de la description qui suit d'un mode de réalisation particulier non Limitatif de L'invention en liaison avec Les figures ci-jointes parmi lesquelles : - la figure 1 est une vue en perspective d'un emballage selon L'invention. - la figure 2 est une représentation schémati¬ que de certaines étapes du procédé selon l'invention,- fill the tubular sheath with a quantity of product to be packaged, - weld the tubular sheath in two immediately adjacent closing welds parallel to the closure weld already made, and spaced from one end of the longitudinal holding welds, and cut The sheath between the two immediately adjacent closing welds, - crushing at least one horn of the pocket and carrying out a transverse holding weld, connecting together two opposite parts of the horn wall, extending perpendicularly to a closing weld and crossing it near one end. Other characteristics and advantages of the invention will emerge on reading the following description of a particular non-limiting embodiment of the invention in conjunction with the attached figures, among which: - Figure 1 is a view in perspective of a packaging according to the invention. FIG. 2 is a diagrammatic representation of certain steps of the method according to the invention,
- la figure 3 est une représentation schémati¬ que de la dernière étape du procédé selon l'invention. - la figure 4 est une vue en coupe schématique selon la ligne IV-IV de la figure 2,- Figure 3 is a schematic representation of the last step of the method according to the invention. FIG. 4 is a schematic sectional view along the line IV-IV of FIG. 2,
- la figure 5 est une vue en coupe schématique selon la ligne V-V de La figure 2,FIG. 5 is a schematic sectional view along the line V-V of FIG. 2,
- La figure 6 est une vue en coupe schématique selon la ligne VI-VI de la figure 2.- Figure 6 is a schematic sectional view along line VI-VI of Figure 2.
En référence à la figure 1, la poche selon L'invention est réalisée à partir d'une gaine tubulaire généralement désignée en 1 en matière plastique souple thermo-soudable, par exemple un film de po lyéthylène, fermé de façon étanche par deux soudures de fermeture 2 s'étendant dans un même plan r perpendi eulai rement à un axe de la gaine tubulaire et formant des cornes 3 avec la gaine tubulaire.With reference to FIG. 1, the bag according to the invention is produced from a tubular sheath generally designated at 1 in flexible heat-sealable plastic material, for example a film of polyethylene, closed in leaktight manner by two welds of closure 2 extending in the same plane r perpendi eulai rement to an axis of the tubular sheath and forming horns 3 with the tubular sheath.
Par ailleurs, la poche comporte trois soudures de maintien transversales 4 s'étendant perpendiculairement au plan des soudures de fermeture 2 et croisant les soudures de fermeture au voisinage d'une de leurs extrémités. Les soudures de maintien transversales inférieures réalisent avec la soudure de fermeture inférieure 2 une configuration en croix assurant une rigidi fi cati on partielle de la face inférieure de la poche et stabilisant celle-ci de façon suffisante pour que la poche tienne debout lorsqu'elle est disposée sur une surface sensiblement plane même lorsque la poche a été ouverte et a été vidée d'une partie de son contenu. Selon le mode de réalisation préféré illustré, la poche comporte également quatre soudures de maintien longitudinales 5 s'étendant selon une direction perpendicu¬ laire aux soudures de fermeture et aux soudures de maintien transversales à partir des extrémités des soudures de main- tien transversales. Du côté où la poche comporte une soudure de maintien transversale 4 inférieure et une soudure de maintien transversale supérieure, les soudures de maintien longitudinales 5 relient les extrémités des deux soudures de maintien transversales 4. Les soudures de maintien trans- versales 4 et les soudures de maintien longitudinales 5 réalisent alors une configuration de rigidifi cation rectan¬ gulaire tendant à maintenir la poche selon une forme généra¬ lement para l lé Lépipédique.Furthermore, the pocket comprises three transverse holding welds 4 extending perpendicular to the plane of the closing welds 2 and crossing the closing welds in the vicinity of one of their ends. The lower transverse retaining welds realize with the lower closing weld 2 a cross configuration ensuring a partial stiffness of the lower face of the pocket and stabilizing it sufficiently so that the pocket remains upright when it is disposed on a substantially flat surface even when the pocket has been opened and has been emptied of part of its contents. According to the preferred embodiment illustrated, the pocket also comprises four longitudinal holding welds 5 extending in a direction perpendicular to the closing welds and to the transverse holding welds from the ends of the transverse holding welds. On the side where the pocket has a weld transverse holding weld 4 and an upper transverse holding weld, the longitudinal holding welds 5 connect the ends of the two transverse holding welds 4. The transverse holding welds 4 and the longitudinal holding welds 5 then produce a configuration of rigidification rectan¬ gular tending to maintain the pocket in a generally genera l le Lépipédique.
La poche selon l'invention est particulièrement destinée au conditionnement de produits liquides tels que du lait ou d'autres boissons alimentaires devant être condi¬ tionnées dans des conditions aseptiques. Les cornes 3 pour lesquelles on réalise une soudure de maintien transversale sont de préférence vidées de tout liquide de sorte qu'elles se présentent sous forme d'une Languette plane qui peut être rabattue sur une face adjacente de la poche et collée à celle-ci afin d'augmenter encore la rigidité de la poche. Dans le cas d'un liquide, et dans le mode de réalisaiton illustré, la quatrième corne 3 est volontairement maintenue sans soudure de maintien transversale 4 afin de pouvoir être coupée et servir de bec verseur pour le liquide.The pouch according to the invention is particularly intended for the packaging of liquid products such as milk or other food drinks to be conditioned under aseptic conditions. The horns 3 for which a transverse holding weld is produced are preferably emptied of any liquid so that they are in the form of a flat tongue which can be folded down on an adjacent face of the pocket and glued to it to further increase the rigidity of the pocket. In the case of a liquid, and in the illustrated embodiment, the fourth horn 3 is deliberately kept without transverse holding weld 4 so that it can be cut and serve as a pouring spout for the liquid.
La poche selon l'invention est de préférence réalisée selon un procédé en continu dont Les principales étapes sont illustrées par les figures 2 à 6. Selon une première étape, une bande de matière souple thermo-soudable est repliée sur elle-même pour former une gaine tubulaire 1. Dans le mode de réalisation illustré, les deux bords de la bande de matière souple sont amenés l'un sur l'autre en vue d'être fixés selon la configuration dite cuir et peau.The bag according to the invention is preferably produced according to a continuous process, the main steps of which are illustrated in FIGS. 2 to 6. According to a first step, a strip of flexible heat-weldable material is folded back on itself to form a tubular sheath 1. In the illustrated embodiment, the two edges of the strip of flexible material are brought one on the other in order to be fixed according to the configuration known as leather and skin.
La gaine ainsi formée passe dans des plaques de conformation 6 disposées en quinconce pour former quatre plis longitudinaux sur une partie de paroi de la gaine tubulai re 1. La gaine tubulaire 1 est entraînée pas à pas et, après avoir été conformée, elle est soudée selon une soudure longitudinale 7, réalisée au moyen d'une élec¬ trode chauffante 8 disposée à l'extérieur de la gaine et coopérant avec une plaque d'appui 9 disposée à l'intérieur de la gaine, pour relier entre elles deux parties de paroi 10 en regard adjacentes à des bords de la bande de matière souple. Par ailleurs, de préférence au même poste, les soudures de maintien long tudinales 5 sont réalisées au moyen d'électrodes chauffantes 11 reliant entre elles des parties de paroi 12 de la gaine tubulaire adjacentes, le long des plis longitudinaux formés lors de l'étape précé¬ dente, sur une longueur sensiblement égale à La hauteur sou¬ haitée pour la poche en position stable sur une surface plane.The sheath thus formed passes through shaping plates 6 arranged in staggered rows to form four longitudinal folds on a wall part of the tubular sheath 1. The tubular sheath 1 is driven step by step and, after having been shaped, it is welded according to a longitudinal weld 7, produced by means of a heating electrode 8 disposed outside the sheath and cooperating with a plate d 'support 9 disposed inside the sheath, to connect together two facing wall portions 10 adjacent to the edges of the strip of flexible material. Furthermore, preferably at the same station, the long tudinal holding welds 5 are produced by means of heating electrodes 11 connecting between them wall portions 12 of the adjacent tubular sheath, along the longitudinal folds formed during the step precedent, over a length substantially equal to the height desired for the pocket in a stable position on a flat surface.
Dans le mode de réalisation illustré, deux plis longitudinaux situés d'un même côté de la gaine sont soudés simultanément. Cela suppose bien entendu que la matière de la gaine n'est pas soudable d'un pli à l'autre c 'estτ-à-di re peau sur peau. Si la matière souple est soudable peau sur peau, il faut prévoir une plaque anti adhésive entre les plis, par exemple en prolongeant la plaque de conformation 6 externe à la gaine jusqu'au poste de soudage.In the illustrated embodiment, two longitudinal folds located on the same side of the sheath are welded simultaneously. This of course presupposes that the sheath material cannot be welded from one fold to the other, that is to say skin on skin. If the flexible material is weldable skin on skin, a non-adhesive plate must be provided between the folds, for example by extending the shaping plate 6 external to the sheath up to the welding station.
Lors d'une phase de démarrage, la gaine tubu- laire est soudée perpendiculairement à son axe longitudinal selon une soudure de fermeture 2 espacée d'une extrémité des soudures de maintien longitudinales 5. La quantité souhaitée de produit à conditionner est alors introduite dans le gaine au moyen d'une canne d'alimentation 13 convena- blement reliée à un dispositif d'alimentation non représenté. En dehors de la phase de démarrage, lorsque la gaine avance d'un pas, on réalise deux soudures de fermeture 2 immédiate¬ ment adjacentes et espacées d'une extrémité des soudures de maintien longitudinales et on coupe la gaine selon une ligne de coupe 14 entre les soudures de fermeture immédia¬ tement adjacentes de façon à détacher une poche venant d'être remplie du reste de la gaine. La poche ainsi réalisée et remplie est de préférence disposée à cheval sur un profi lé 15 comportant une face supérieure ayant une partie plane horizontale 16 reliée à deux parties de parois planes obliques 17 selon un angle sortant obtus. Dans cette position, les cornes 3 qui prennent appui sur le profilé 15 sont écrasées au moyen de tampons mobi les 18 afin de chasser le liquide contenu dans les cornes, et les soudures de maintien transver¬ sales 4, reliant deux parties de paroi de corne en regard, sont réalisées au moyen d'une électrode chauffante 19 portée par les tampons 18. La soudure de maintien transversale supérieure est réalisée au moyen d'un tampon 20 comportant une électrode chauffante 21 et montée mobile par rapport à un tampon fixe 22. Bien entendu l'invention n'est pas limitée au mode de réalisation décrit et on peut y apporter des variantes de réalisation sans sortir du cadre de L'inven¬ tion. En particulier, bien que la poche selon l'invention ait été décrite en liaison avec trois soudures de maintien transversales et quatre soudure de maintien longitudinales, on peut réaliser la poche selon l'invention avec un nombre différent de soudures de maintien selon le degré de rigidi- fication et de stabilité que l'on souhaite obtenir.During a start-up phase, the tubular sheath is welded perpendicular to its longitudinal axis according to a closing weld 2 spaced from one end of the longitudinal holding welds 5. The desired quantity of product to be conditioned is then introduced into the sheath by means of a feed rod 13 suitably connected to a feed device not shown. Outside the start-up phase, when the sheath advances by one step, two closing welds 2 are immediately adjacent which are spaced from one end of the longitudinal holding welds and the sheath is cut along a cutting line 14 between the immediately adjacent closing welds so as to detach a pocket which has just been filled from the rest of the sheath. The pocket thus produced and filled is preferably arranged astride a profile 15 comprising an upper face having a horizontal planar portion 16 connected to two portions of oblique planar walls 17 at an obtuse outgoing angle. In this position, the horns 3 which bear on the profile 15 are crushed by means of buffers 18 to expel the liquid contained in the horns, and the transverse holding welds 4, connecting two parts of the horn wall opposite, are produced by means of a heating electrode 19 carried by the pads 18. The upper transverse holding weld is produced by means of a pad 20 comprising a heating electrode 21 and mounted movable relative to a fixed pad 22. Of course, the invention is not limited to the embodiment described and it is possible to make variant embodiments without departing from the scope of the invention. In particular, although the pocket according to the invention has been described in connection with three transverse holding welds and four longitudinal holding welds, the pocket according to the invention can be produced with a different number of holding welds depending on the degree of stiffening and stability that one wishes to obtain.
De même, bien que la poche ait été décrite en liaison avec une gaine tubulaire formée par repliage d'une matière souple et soudure du type cuir et peau, la poche selon l'invention peut également être réalisée à partir d'une gaine extrudée directement sous forme tubu¬ laire ou à partir d'une gaine réalisée par soudure bord bord d'une bande de matière souple selon le mode cuir et cuir. Similarly, although the pocket has been described in connection with a tubular sheath formed by folding a flexible material and welding of the leather and skin type, the pocket according to the invention can also be produced from a sheath extruded directly in tubular form or from a sheath produced by welding the edge of a strip of flexible material according to the leather and leather mode.

Claims

BIMI ___Ii___I-_2NS BIMI ___ Ii ___ I-_2NS
1. Poche en matière souple thermo-soudable comportant une gaine tubulaire (1) fermée de façon étanche par deux soudures de fermeture (2) s'étendant dans un même plan perpendiculairement à un axe de la gaine tubulaire et formant des cornes (3) avec la gaine tubulaire carac¬ térisée en ce qu'elle comporte au moins une soudure de maintien transversale (4) reliant entre elles deux parties de paroi de corne en regard, s'étendant perpendiculairement au plan des soudures de fermeture (2) et croisant une soudure de fermeture au voisinage d'une extrémité de celle-ci.1. Pouch of flexible heat-weldable material comprising a tubular sheath (1) closed in a sealed manner by two closing welds (2) extending in the same plane perpendicular to an axis of the tubular sheath and forming horns (3) with the tubular sheath carac¬ terized in that it comprises at least one transverse holding weld (4) connecting together two facing wall parts of the horn, extending perpendicular to the plane of the closing welds (2) and crossing a closing weld in the vicinity of one end thereof.
2. Poche en matière souple selon la revendi¬ cation 1, caractérisée en ce qu'elle comporte trois soudures de maintien transversales (4) délimitant trois cornes (3).2. Pocket made of flexible material according to revendi¬ cation 1, characterized in that it comprises three transverse holding welds (4) delimiting three horns (3).
3. Poche en matière souple selon la revendi- cation 1 ou la revendication 2, caractérisée en ce qu'elle comporte des soudures de maintien longitudinales (5) reliant entre elles deux parties de paroi adjacentes (12) de la gaine tubulaire et s'étendant selon une direction perpendi¬ culaire aux soudures de fermeture (2) et aux soudures de maintien transversales (4) à partir des extrémités des soudures de maintien transversales.3. Pocket made of flexible material according to claim 1 or claim 2, characterized in that it comprises longitudinal retaining welds (5) connecting together two adjacent wall portions (12) of the tubular sheath and s' extending in a direction perpendicular to the closure welds (2) and to the transverse holding welds (4) from the ends of the transverse holding welds.
4. Poche en matière souple selon la revendi¬ cation 3 prise dans son rattachement à la revendication 2, caractérisée en ce que deux soudures de maintien longitu- dinales (5) relient les extrémités de deux soudures de maintien transversales (4) adjacentes.4. A pouch made of flexible material as claimed in claim 3 taken in its connection with claim 2, characterized in that two longitudinal holding welds (5) connect the ends of two adjacent transverse holding welds (4).
5. Procédé de réalisation d'une poche en matière souple thermo-soudable selon l'une des revendications 1 à 4, et conditionnement simultané d'un produit caractérisé en ce qu'i l comporte des étapes de :5. Method for producing a pouch of flexible heat-weldable material according to one of claims 1 to 4, and simultaneous packaging of a product characterized in that it comprises steps of:
- replier sur elle-même une bande de matériau souple thermo- soudable pour former une gaine tubulaire (1),- fold over a strip of flexible heat-weldable material to form a tubular sheath (1),
- réaliser au moins un pli longitudinal sur une partie de paroi de la gaine tubulaire (1), - souder la bande de matière souple selon deux parties de paroi (10) en regard adjacentes à des bords de la bande de matière souple, et selon deux parties de paroi (12) adjacentes, le Long du pli longitudinal pour réaliser au moins une soudure de maintien longitudinale (5),- make at least one longitudinal fold on a part of the wall of the tubular sheath (1), - weld the strip of flexible material along two facing wall portions (10) adjacent to the edges of the strip of flexible material, and along two adjacent wall portions (12), along the longitudinal fold to produce at least one weld longitudinal support (5),
- souder, selon une phase de démarrage du procédé, la gaine tubulaire perpendiculairement à un axe longitudinal de celle-ci selon une soudure de fermeture (2) espacée d'une extrémité des soudures de maintien longitudinales (5), - remplir la gaine tubulaire avec une quantité de produit à conditionner,- weld, according to a process start-up phase, the tubular sheath perpendicular to a longitudinal axis thereof according to a closing weld (2) spaced from one end of the longitudinal retaining welds (5), - fill the tubular sheath with a quantity of product to be packaged,
- souder La gaine tubulaire selon deux soudures de fermeture immédiatement adjacente (2) parallèles à la soudure de fermeture déjà réalisée, et espacées d'une extrémité des soudures de maintien longitudinales (5), et couper la gaine entre les deux soudures de fermeture (2) immédia¬ tement adjacentes,- weld the tubular sheath in two immediately adjacent closing welds (2) parallel to the already closed closing weld, and spaced from one end of the longitudinal holding welds (5), and cut the sheath between the two closing welds ( 2) immediately adjacent,
- écraser au moins une corne de La poche et réaliser une soudure de maintien transversale reliant entre elles deux parties de paroi de corne en regard, s'étendant perpendiculairement à une soudure de fermeture (2) et croisant celle-ci au voisinage d'une extrémité.- crush at least one horn in the pocket and make a transverse holding weld connecting two parts of the facing wall of the horn, extending perpendicular to a closing weld (2) and crossing the latter in the vicinity of a end.
6. Procédé selon la revendication 5 caracté¬ risé en ce que pour l'étape de réalisation de soudures de maintien transversales (4) La poche est disposée à cheval sur un profilé (15) comportant une surface supérieure ayant au moins une partie plane horizontale (16) reliée à une partie plane oblique (17) selon un angle sortant obtus . 6. Method according to claim 5 caracté¬ ized in that for the step of making transverse holding welds (4) The pocket is arranged astride a profile (15) having an upper surface having at least a horizontal flat part (16) connected to an oblique flat part (17) at an obtuse outward angle.
EP19900903855 1989-02-22 1990-02-16 Pouch made from a heat-sealing material, process for producing such pouch and simultaneous packaging of a product Withdrawn EP0460039A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8902284 1989-02-22
FR8902284A FR2643340A1 (en) 1989-02-22 1989-02-22 POCKET IN FLEXIBLE THERMAL-WELDABLE MATERIAL, AND METHOD FOR MAKING SUCH A POCKET AND SIMULTANEOUSLY PACKAGING A PRODUCT

Publications (1)

Publication Number Publication Date
EP0460039A1 true EP0460039A1 (en) 1991-12-11

Family

ID=9379010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900903855 Withdrawn EP0460039A1 (en) 1989-02-22 1990-02-16 Pouch made from a heat-sealing material, process for producing such pouch and simultaneous packaging of a product

Country Status (3)

Country Link
EP (1) EP0460039A1 (en)
FR (1) FR2643340A1 (en)
WO (1) WO1990009933A1 (en)

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DE69118048T2 (en) * 1990-08-07 1996-08-22 Food Machinery Design Ltd Device and method for producing, filling and sealing while simultaneously packing two article streams
EP0681970A1 (en) * 1994-05-11 1995-11-15 The Procter & Gamble Company Self-standing pouch, and assembly thereof
DE19507445A1 (en) * 1995-03-03 1996-09-05 Rovema Gmbh Tubular bag machine with a gusset generator, process for producing tubular bags and tubular bag with a gusset
JP3794746B2 (en) * 1996-02-15 2006-07-12 花王株式会社 Wet tissue packaging
IT1286281B1 (en) * 1996-10-31 1998-07-08 Bl Macchine Automatiche METHOD FOR REGISTRATION OF PLASTIC BAGS AND BAGS SO OBTAINED
FR2759981B1 (en) * 1997-02-27 1999-05-14 Takao Hirai DISPOSABLE CONTAINER IN FLEXIBLE MATERIAL
WO2001032509A1 (en) * 1999-11-05 2001-05-10 Ferruccio Carmelo Calvano Method and machine for making and filling a package, and package obtained
US6616334B2 (en) 2001-11-30 2003-09-09 Playtex Products, Inc. Die cut resealable flap
SE0200294L (en) * 2002-02-01 2003-08-02 Tetra Laval Holdings & Finance packaging Containers
DE10360305A1 (en) * 2003-12-20 2005-07-21 Khs Maschinen- Und Anlagenbau Ag Packaging of flat material and method for producing such a packaging
DE102005011347A1 (en) * 2005-03-11 2006-09-14 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Standing package, especially round pouch
ES2459815B1 (en) * 2012-11-07 2015-07-28 José María PASTRANA ROJAS PROCEDURE FOR THE FORMATION AND FILLING OF FLAT LAMINARY CONTAINERS WITH FOUR THERMOSOLDED SEWINGS, AND PACKAGE OBTAINED

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Also Published As

Publication number Publication date
FR2643340A1 (en) 1990-08-24
WO1990009933A1 (en) 1990-09-07

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