WO2007031330A1 - Procédé et machine de fabrication de conteneurs flexibles verticaux permettant le remplissage et la fermeture de ceux-ci - Google Patents

Procédé et machine de fabrication de conteneurs flexibles verticaux permettant le remplissage et la fermeture de ceux-ci Download PDF

Info

Publication number
WO2007031330A1
WO2007031330A1 PCT/EP2006/009005 EP2006009005W WO2007031330A1 WO 2007031330 A1 WO2007031330 A1 WO 2007031330A1 EP 2006009005 W EP2006009005 W EP 2006009005W WO 2007031330 A1 WO2007031330 A1 WO 2007031330A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
welding
folding
container
wall
Prior art date
Application number
PCT/EP2006/009005
Other languages
English (en)
Inventor
Ramon Figols Gamiz
Original Assignee
Volpak, 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 Volpak, S.A. filed Critical Volpak, S.A.
Publication of WO2007031330A1 publication Critical patent/WO2007031330A1/fr

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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
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/08—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it in a web folded and sealed transversely to form pockets which are subsequently filled and then closed by sealing

Definitions

  • the invention relates to a method and a machine for the process manufacturing of containers, starting from a heat-sealable sheet, and for the subsequent filling and closure thereof.
  • the containers are specifically designed to contain liquid products and to remain erect, in a vertical position, when they are full. Background of the invention
  • containers manufactured from a flexible, weldable sheet are known that are capable of remaining in an erect position once filled.
  • One type of known container is that which comprises two opposite side walls, joined by welding along their lateral edges and continuously joined to a back wall that is folded inward, forming a watertight receptacle.
  • weldings are performed along the junction lines between the back wall and the side walls, as well as between facing portions of said back and side walls to configure a deformable back wall in the form of an inverted dome when the container is full, which does not protrude from the essentially elliptical perimeter, formed by the junction lines between said back wall and the corresponding side walls, which serves as a support whereon the full container stands in an erect position.
  • This type of containers further comprise a ceiling wall that is folded inward and joined to the side walls in a manner analogous to that of the back wall and the sides of the container to configure a deformable ceiling wall in the shape of a dome when the container is full.
  • the mouths designed to pour the liquids must be equipped with the end of a corresponding mouth neck, placed on the upper part of the container, in order to prevent that, when the container is opened, generally by tearing or cutting the portion of the sheet that forms said mouth, the liquid is accidentally poured.
  • the type of containers described above are process manufactured in vertical machines, upperly fed with a sheet made of a heat- sealable material that is conveniently folded as it is swept downward, following vertical folding lines, to form the back and the ceiling of the container, which are appropriately welded to the sheet portions wherefrom the container walls will be subsequently made by cutting the sheet.
  • the containers are produced in a horizontal position, such that, if the same machine is used to fill the containers with liquid products without turning the containers over and to subsequently close them, the above-mentioned position makes it necessary to first form a watertight receptacle, the lateral closures whereof are formed by the junction of the back and ceiling walls with the sheet portions that are to form the side walls and the lower closure whereof is formed by the junction of the sheet along what will become the junction of two facing lateral edges of the side walls of the container.
  • the sheet is joined along a horizontal junction line, such that, when the sheet is cut upstream from said horizontal junction, an upperly open, watertight receptacle is produced. Closure of the opening by welding creates the junction of the other two facing lateral edges of the side walls of the container.
  • the last welding that which upperly closes the container, extends along the entire length of the side walls of the container, which remain very far from each other due to the pressure exerted by the liquid upon being introduced in the watertight receptacle that constitutes the future container, once the upper edges of the sheet that forms the side walls of the container are welded.
  • the length of the welding, the deformation undergone by the receptacle as a consequence of the filling thereof and the proximity of the liquid to the portion of the sheet that is to be welded make this operation very difficult, for which reason the full containers thus produced do not meet the desirable quality level.
  • the nozzles used to fill the containers interfere with the vertical, downward trajectory of the manufactured containers, which are produced in the form of a pile, significantly slowing the filling process. In fact, the containers must be filled one by one.
  • the method of the invention for the process manufacturing of erect flexible containers, starting from at least a heat-sealable sheet, and for the subsequent filling and closure thereof, overcomes the above-mentioned drawbacks.
  • the method is characterised in that it comprises the stages described in the first claim.
  • the sheet is folded along horizontal folding lines in order to form a back wall and a ceiling for each container, and sheet portions are joined by welding in order to produce a closed receptacle, suitable for the storage of liquids, equipped with an open upper mouth wherethrough the product to be stored is introduced.
  • the sheet portions joined by welding that form the lateral seams of the manufactured containers, which are the longer junctions, are made prior to introducing the product in the containers and prior to individualising the latter; therefore, making these junctions exhibits no difficulties.
  • the last welding junction operations take place in the mouth neck of the container, which is produced in a vertical position, in such a way that they are sufficiently far from the product introduced into the container so as not to create problems due to the temperature difference between the product and the welding hot spots, or to the deformation of the side walls of the container when it is full. For this reason, the finishing of the final junctions, those which close the container, is improved, as is that of the intermediate ones which are made when the container is empty.
  • the operation designed to cut the free portions in order to form the mouth neck, prior to being joined by welding facilitates said junction since they are not subject to adopt the bent shape of the side walls, whereto they are continuously joined, once the container is full, it being possible to use welding devices designed for flat sheets.
  • a machine for the process manufacturing of erect flexible containers according to claim 1 , which is essentially characterised in that it comprises, in the sheet's forward direction, motor-driven rollers for the uncoiling of the heat-sealable sheet; a system designed for folding the sheet, which comprises a first sheet folding device designed to form the triple fold in an area that is shifted with respect to the middle longitudinal area; a second sheet folding device designed to form the double fold on the lateral sheet portions; guides designed to flatten the folded sheet; at least one welding station in charge of making the weldings of the lower and upper transverse walls with the adjacent side walls, respectively, of one or more containers; at least one second welding station in charge of making the two vertical welding strips in adjoining containers on each forward movement of the sheet; at least one cutting station, which comprises a cutting matrix designed to form the two halves of the mouth neck of the containers by simultaneously cutting the free, upper portions of the side walls of the corresponding containers; one cross- cutting station, adapted so as to cut the sheet in the middle area of at least one vertical
  • the machines upstream from the sheet folding system, the machines comprises devices designed to perforate the sheet portions that make up the lower and upper transverse walls.
  • FIGS. 1 to 6 are perspective views of a portion of flat sheet during different stages of the method according to the invention
  • Fig. 7 is a perspective view of a container manufactured, filled and closed according to the method of the invention
  • Figs. 8 and 9 are views of two halves of a machine designed to implement the method according to the invention.
  • Fig. 10 is a perspective view of two flat sheet portions in the first stage of the manufacturing process.
  • Figs. 1 to 7 represent a transverse portion of flat, heat-sealable sheet 200 at different stages of the method of the invention.
  • the sheet has been folded by making a triple fold, the first 1 , second 2 and third 3 folding lines whereof are adjacent and parallel with respect to one another, endowing the sheet with a "W-shaped cross-section, defining a first, vertical side wall 8; a lateral sheet portion 10, which is vertical and facing the first lateral sheet portion; and a lower transverse wall 11 composed of a sheet portion folded along the second 2 folding line which joins first side wall 8 and facing the lateral sheet portion 10.
  • said lower transverse wall 11 is placed between the first side wall 8 and the lateral sheet portion 10, which have a different height, such that the upper edge 23 of the first wall is one level below the upper edge 24 of the lateral sheet portion 10.
  • the lateral sheet portion 10 has been folded by making a double fold along a fourth 4 and a fifth 5 folding line, which are adjacent and parallel with respect to one another.
  • the lateral sheet portion 10 has been folded towards the first side wall 8 by making a first upper downward fold, below the fourth 4 folding line, and a second upper upward fold, above the fifth 5 folding line, correlatively defining the second side wall 12, delimited by the third and fourth folding lines, as well as an upper transverse wall 13, folded along the fifth folding line.
  • the folding lines are made on the sheet in such a way that upper edges 23 and 24 of the first and second side walls are now flush.
  • portions 15a, 15b, 15c and 15d which essentially have the form of a rectangular triangle, facing one another, adjoining the first 1 and third 3 folding lines; portions 15a and 15b correspond to two first sheet portions of the lower transverse wall 11 , facing each other, with corresponding facing sheet portions of the second 12 and first 8 side walls, respectively, and portions 15c and 15d correspond to two second sheet portions of lower transverse wall 11, also facing each other, with their corresponding facing sheet portions of the second 12 and first 8 side walls, respectively, the first and second portions being separated by a distance equivalent to the width of an empty, folded container.
  • Adjoining facing edges 16a, 16b of the first 8 and the second 12 side walls have also been joined by welding to the lower transverse wall 11 , along the first 1 and third 3 folding lines joining them.
  • the comers 17 of the second side wall 12 adjoining the fourth 4 folding line have also been joined by welding to the respective facing areas of the upper transverse wall 13; and the facing portions of the first side wall 7, which are symmetrically placed with respect to the above- mentioned corners 17 of the second wall 12, have been joined by welding to the respective facing areas of the upper transverse wall 13, free upper portions 9 and 14 of the first and second side walls 8 and 12 being set above the fourth 4 folding line.
  • portions 17a, 17b, 17c and 17d which essentially have the form of a rectangular triangle, facing one another, located at the level of the fourth 4 folding line; portions 17a to 17 correspond to two first sheet portions of the upper transverse wall 13, facing each other, with two facing sheet portions of the second 12 and first 8 side walls, respectively; and portions 17c and 17d correspond to two second sheet portions of the upper transverse wall 13, also facing each other, with their corresponding facing sheet portions of the second 12 and first 8 side walls, respectively, the first and second portions being separated by a distance equivalent to the width of an empty, folded container.
  • each of vertices 18a to 18h of the joined portions are placed on one vertex of an imaginary parallelepiped.
  • first 8 and second 12 side walls have been joined by welding, by means of respective vertical welding strips 19 and 20, which extend along the entire length of said side walls, separated by a distance equivalent to the width of an empty, folded container.
  • These welding strips are superimposed, on the upper and lower ends, on the previously made triangular junction portions, forming a receptacle 25, which is equipped with a provisional upper mouth 26, suitable to store liquid products.
  • side walls 8 and 12 are joined prior to welding end sheet areas 17a to 17d.
  • the sheet has been vertically cut along the vertical welding strips, separating receptacle 25 from sheet 200 and producing a vertically placed individual container 6.
  • FIG. 6 represents a dispenser which introduces the product to be stored through said provisional mouth 26.
  • the second 2 folding line be equidistant from the first 1 and third 3 folding lines, and that the separation distance between the fourth 4 and fifth 5 folding lines be equal to the distance between the first 1 and second 2 folding lines (see Fig. 2).
  • the two faces of the sheets used to manufacture containers similar to those of the invention are endowed with different properties, since the face designed to be the outer face of the container will act as a medium for the printing of information or advertising, whereas the inner face will be in direct contact with the liquid stored in the container. Due to these properties, it is difficult to join by welding facing portions of the face of the sheet designed to be exposed to the exterior.
  • the sheet 200 is subject to a perforation stage, wherein groups of perforations are made, formed by two pairs of transversely aligned perforations; of these, perforations 32a, 32b of the first pair are made on the sheet portion that is to form the lower transverse sheet portion 11 , and separated from one another in such a way that each will be placed on one side of the second folding line 2, whereas the perforations of the second pair 33a, 33b are made on the sheet portion that will form the upper transverse sheet portion 13, and separated from one another in such a way that each will be placed on one side of the fifth folding line 5, each group of perforations being separated by a distance equivalent to the width of an empty, folded container 6.
  • Figs. 8 and 9 represent, in two parts, a machine for the process manufacturing of erect flexible containers 100, starting from a flat, heat-sealable sheet 200, and for the subsequent filling and closure thereof, according to the method described above.
  • Said machine comprises, in the first part, motor- driven rollers 34 for the uncoiling of the heat-sealable sheet; perforators 35 for the sheet portions which will subsequently make up the lower 11 and upper 13 transverse portions (see Fig. 2); and a sheet folding system 36.
  • This system comprises a first sheet folding device 37 to form the triple fold 38 in an area that is shifted with respect to the middle longitudinal area; a second sheet folding device 39 to form the double fold 40 in the lateral sheet portion 10; and guides 41 to flatten the folded sheet.
  • the machine comprises a first welding station 42 in charge of performing weldings 50, 51 of the lower and upper transverse walls 11 , 13 with adjacent side walls 8 and 12, respectively, of one or more containers; a second welding station 43 in charge of performing the two vertical welding strips 19, 20 in adjoining containers in each forward movement of the sheet; a cutting station 44, which comprises a cutting matrix 45 to form the two halves 21, 22 of the mouth neck 28 of the containers by simultaneously cutting free upper portions 9, 14 of the side walls of the corresponding containers; a cross-cutting station 46, adapted so as to cut the sheet in the middle area of a vertical welding strip, individualising the containers; a container opening station 47, adapted so as to separate, in a direction transverse to the forward movement of the sheet, the two halves 21 , 22 of mouth neck 28 of a container; a container filling station 48 adapted so as to simultaneously fill two adjacent containers; and a third welding station 49 in charge of welding the perimeter edge 30 of the two halves of the neck of the filled containers.
  • the only difference with respect to the method described above for a single sheet lies in the formation of the upper sheet portion necessary for the upper fold.
  • the length of the first sheet is smaller than the sheet 200 used in the method described above, covering a length between the upper edge 23 of the first lateral wall 8 and the fourth 4 folding line.
  • the first manufacturing stage represented in Fig. 10 is similar to the one already described for Fig. 1, wherein the first sheet is folded, acquiring a W shape.
  • the second sheet which has a length equivalent to that between the fourth 4 folding line and the upper edge 24, is joined to the first sheet by welding along the edges, forming the fourth 4 folding line.
  • a sheet is obtained that is equivalent to the sheet 200 in Fig. 2 and the manufacturing process continues according to the rest of the steps described in the method for a single sheet 200.
  • sheet 200 could be formed by two sheets joined by welding along the fifth 5 folding line, or else along the first 1, the second 2 or the third 3 horizontal folding lines, and the method for the process manufacturing of containers could also be performed in the manner described.

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

Abstract

Procédé de fabrication de conteneurs flexibles verticaux à partir d’une feuille thermosoudable plate, comprenant, entre autres, les phases suivantes : pliage de la feuille en triple, pour définir deux parois latérales de hauteur différente et une paroi transversale inférieure ; pliage d’un côté vers l’autre, pour réaliser un pli supérieur vers le bas et un pli supérieur vers le haut, avec les bords des deux côtés restant au même niveau ; jonction par soudage des portions latérales avec les parois transversales inférieure et supérieure, de même que lesdites portions latérales, en bandes de soudage verticales respectives, pour constituer un réceptacle équipé d’une embouchure supérieure provisoire ; découpe des portions supérieures libres des deux portions latérales, pour constituer un goulot d’embouchure ; découpe de la feuille à travers les bandes de soudage verticales, pour séparer le réceptacle de la feuille ; remplissage du conteneur en introduisant le produit à stocker à travers ladite embouchure provisoire ; et jonction par soudage des bords périphériques du goulot d'embouchure.
PCT/EP2006/009005 2005-09-16 2006-09-15 Procédé et machine de fabrication de conteneurs flexibles verticaux permettant le remplissage et la fermeture de ceux-ci WO2007031330A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP200502294 2005-09-16
ES200502294A ES2292311B1 (es) 2005-09-16 2005-09-16 Procedimiento y maquina para la fabricacion en continuo de envases flexibles de posicion erguida y para su posterior llenado y cierre.

Publications (1)

Publication Number Publication Date
WO2007031330A1 true WO2007031330A1 (fr) 2007-03-22

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PCT/EP2006/009005 WO2007031330A1 (fr) 2005-09-16 2006-09-15 Procédé et machine de fabrication de conteneurs flexibles verticaux permettant le remplissage et la fermeture de ceux-ci

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WO (1) WO2007031330A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011015696A1 (fr) 2009-08-04 2011-02-10 Volpak, S.A.U. Procédé et machine pour fabriquer en continu des emballages de matériau flexible et emballage obtenu au moyen dudit procédé
EP2308758A1 (fr) 2009-10-07 2011-04-13 IASOPOR - Equipamentos de Embalagem, Umipessoal, Lda Procédé et dispositif pour fabriquer et remplir des récipients souples ainsi que le récipient obtenu
EP2319765A1 (fr) * 2009-11-05 2011-05-11 Kraft Foods R & D, Inc. Procédé et appareil liés à un emballage doté de soufflets formés par au moins deux méthodes de formation de soufflet différentes
US8844767B1 (en) 2012-07-06 2014-09-30 Daisy Brand, LLC Food containment and delivery system
US9598209B1 (en) 2014-07-22 2017-03-21 Daisy Brand, LLC Cap and spout assembly with positive orientation features
US11465813B2 (en) 2019-07-30 2022-10-11 Campbell Soup Company Multi-phase squeeze-dispensable food products

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2014539A (en) * 1978-02-15 1979-08-30 Vittel Eaux Min Container handle arrangement
EP0052151A1 (fr) * 1980-11-13 1982-05-26 Kessel, Christoph, Ing. grad Sac à fond plié et appareil pour sa fabrication
US5080643A (en) * 1988-03-21 1992-01-14 Dow Brands Inc. Method of making a stand-up plastic bag
EP0661208A1 (fr) * 1993-12-27 1995-07-05 Sumitomo Bakelite Company Limited Procédé et dispositif pour la fabrication d'un sac tenant debout avec un bouchon
US20040025476A1 (en) * 2002-04-10 2004-02-12 Oliverio Frank G. Stand-up pouch forming, filling and sealing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2014539A (en) * 1978-02-15 1979-08-30 Vittel Eaux Min Container handle arrangement
EP0052151A1 (fr) * 1980-11-13 1982-05-26 Kessel, Christoph, Ing. grad Sac à fond plié et appareil pour sa fabrication
US5080643A (en) * 1988-03-21 1992-01-14 Dow Brands Inc. Method of making a stand-up plastic bag
EP0661208A1 (fr) * 1993-12-27 1995-07-05 Sumitomo Bakelite Company Limited Procédé et dispositif pour la fabrication d'un sac tenant debout avec un bouchon
US20040025476A1 (en) * 2002-04-10 2004-02-12 Oliverio Frank G. Stand-up pouch forming, filling and sealing

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011015696A1 (fr) 2009-08-04 2011-02-10 Volpak, S.A.U. Procédé et machine pour fabriquer en continu des emballages de matériau flexible et emballage obtenu au moyen dudit procédé
CN102844245A (zh) * 2009-08-04 2012-12-26 沃尔帕克公司 用于由柔性材料制成的包装件的连续制造的方法和机器以及所得到的包装件
US8790229B2 (en) 2009-08-04 2014-07-29 Volpak, S.A.U. Method and machine for the continuous manufacture of packages made from flexible material and resulting package
CN102844245B (zh) * 2009-08-04 2014-08-20 沃尔帕克公司 用于由柔性材料制成的包装件的连续制造的方法和机器以及所得到的包装件
EP2308758A1 (fr) 2009-10-07 2011-04-13 IASOPOR - Equipamentos de Embalagem, Umipessoal, Lda Procédé et dispositif pour fabriquer et remplir des récipients souples ainsi que le récipient obtenu
WO2011043684A1 (fr) 2009-10-07 2011-04-14 Iasopor - Equipamentos De Embalagem, Unipessoal, Lda Procédé et appareil permettant de fabriquer et de remplir des contenants souples et contenant obtenu
EP2319765A1 (fr) * 2009-11-05 2011-05-11 Kraft Foods R & D, Inc. Procédé et appareil liés à un emballage doté de soufflets formés par au moins deux méthodes de formation de soufflet différentes
US8844767B1 (en) 2012-07-06 2014-09-30 Daisy Brand, LLC Food containment and delivery system
US9598209B1 (en) 2014-07-22 2017-03-21 Daisy Brand, LLC Cap and spout assembly with positive orientation features
US11465813B2 (en) 2019-07-30 2022-10-11 Campbell Soup Company Multi-phase squeeze-dispensable food products

Also Published As

Publication number Publication date
ES2292311A1 (es) 2008-03-01
ES2292311B1 (es) 2009-02-16

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