EP0792801B1 - Automatic machine and method for forming, filling and closing packaging bags - Google Patents

Automatic machine and method for forming, filling and closing packaging bags Download PDF

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Publication number
EP0792801B1
EP0792801B1 EP97400407A EP97400407A EP0792801B1 EP 0792801 B1 EP0792801 B1 EP 0792801B1 EP 97400407 A EP97400407 A EP 97400407A EP 97400407 A EP97400407 A EP 97400407A EP 0792801 B1 EP0792801 B1 EP 0792801B1
Authority
EP
European Patent Office
Prior art keywords
film
strip
ribs
fact
shaped strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97400407A
Other languages
German (de)
French (fr)
Other versions
EP0792801A1 (en
Inventor
Henri Bois
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.)
Flexico France SARL
Original Assignee
Flexico France SARL
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 Flexico France SARL filed Critical Flexico France SARL
Publication of EP0792801A1 publication Critical patent/EP0792801A1/en
Application granted granted Critical
Publication of EP0792801B1 publication Critical patent/EP0792801B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65B9/10—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
    • B65B9/207—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 the web advancing continuously
    • 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
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • B65B41/16—Feeding webs from rolls by rollers
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/188—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating profile-strips, e.g. for reclosable bags
    • 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
    • B65B9/2042—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
    • B65B9/213—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 the web having intermittent motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/813—Applying closures
    • B31B70/8131—Making bags having interengaging closure elements

Definitions

  • the present invention relates to the field of machines for forming, filling and automatically closing film-based packaging, in particular of thermoplastic material, comprising closure profiles, for example complementary male and female closure profiles.
  • Such machines are often called FFS, corresponding to the initials of the English expression "Form, Fill and Seal machine”.
  • Most of these machines include a forming neck which receives the film in the planar state from an unwinder and provides the film-shaped tube as output, a filling chute which opens into this forming neck and by Consequently in said tube, longitudinal welding means for closing the tube longitudinally and means capable of sequentially generating a first transverse weld before a product is introduced into the tube by the filler neck, then a second transverse weld when the product has been introduced into the tube, to close a package around the latter.
  • the document WO-A-8900949 describes a method for manufacturing packaging sachets comprising a step which consists in generating at least one fold on a film intended to constitute a sachet, to form at least one bellows on the final sachet.
  • the present invention now aims to improve the known FFS machines.
  • the present invention also relates to a method for manufacturing packaging bags on a machine for forming, filling and automatically closing packaging bags, as defined in the set of appended claims.
  • the film used to make the bags is preferably thermoplastic.
  • the invention can extend to any flexible film capable of constituting a packaging sachet.
  • the bag comprises a closure assembly formed by two complementary closure profiles 22 and 24, fixed on the internal surface of the bag, at the mouth of the latter.
  • the closure assembly can be provided with a longitudinal cord facilitating the opening of the bag.
  • the film 12 can be a simple flexible single-layer film or a complex film composed of different adjacent layers, for example coextruded.
  • the strip supporting the sections 22 and 24 is welded to half its width, on the film 12. This prevents the internal pressure in the bag from requesting the sections 22 and 24 when the cover opens. support of the profiles is not connected to the edges of the film 12, opposite the profiles 22, 24, but below the profiles.
  • the bottom bellows can be made in a different color from the body of the bag.
  • the strip 50 connected to the profiles 22, 24, deposited on the film 12, has a length equal to half the width of the film 12.
  • One side of the U-shaped strip and the adjacent support strip 23 are welded to the film 12 at the level of the deposition station, upstream of the forming neck.
  • the other side of the U-shaped strip and the second support strip 25 are welded to the internal wall of the film 12 constituting the packaging after folding of this film in tubular configuration and filling of the packaging, that is to say when finishing this packaging, at the transverse welding station.
  • Such a strip 50 linked to the sections 22, 24 can be conveyed transversely on the film 12 by any means known for this purpose.
  • the transverse welding station means capable of cutting this strip in order to separate the strip 50 in the actual U, intended to form a bellows, and the sections 22, 24, according to the cutting line referenced 200 in FIG. 1.
  • the sections 22, 24 are linked to the mouth area of a sachet which has just been individualized, while the strip 50 in U forms a bottom gusset for the sachet being formed.
  • the reverse arrangement can be adopted, that is to say that the strip forming assembly 50 in U and sections 22/24 can be deposited convexity of the U strip in front with respect to the direction of travel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Making Paper Articles (AREA)
  • Bag Frames (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

The machine, designed to produce packages with interlocking closure strips, incorporates a mechanism (110) which makes a fold (P) in the film (12) to create at least one pleat in each finished package. The fold (P) can be made along or across the film layer, and the package closure strips can also be in either direction. The pleat in each package can be in the form of a Z-section fold in the film itself or a U-section insert welded into it. In the former case the fold can be made by two parallel plates (112, 114) with an adjustable amount of overlap.

Description

La présente invention concerne le domaine des machines de formation, remplissage et fermeture automatique d'emballages à base de film, notamment en matériau thermoplastique, comportant des profilés de fermeture, par exemple des profilés de fermeture mâle et femelle complémentaires.The present invention relates to the field of machines for forming, filling and automatically closing film-based packaging, in particular of thermoplastic material, comprising closure profiles, for example complementary male and female closure profiles.

De telles machines sont souvent dénommées FFS, correspondant aux initiales de l'expression anglaise "Form, Fill and Seal machine".Such machines are often called FFS, corresponding to the initials of the English expression "Form, Fill and Seal machine".

On a déjà proposé de nombreuses machines de ce type.Many machines of this type have already been proposed.

La plupart de ces machines comprennent un col de formage qui reçoit en entrée le film à l'état plan en provenance d'un dérouleur et fournit en sortie le film conformé en tube, une goulotte de remplissage qui débouche dans ce col de formage et par conséquent dans ledit tube, des moyens de soudure longitudinale pour fermer le tube longitudinalement et des moyens aptes à générer séquentiellement une première soudure transversale avant qu'un produit ne soit introduit dans le tube par la goulotte de remplissage, puis une seconde soudure transversale quand le produit a été introduit dans le tube, pour fermer un emballage autour de ce dernier.Most of these machines include a forming neck which receives the film in the planar state from an unwinder and provides the film-shaped tube as output, a filling chute which opens into this forming neck and by Consequently in said tube, longitudinal welding means for closing the tube longitudinally and means capable of sequentially generating a first transverse weld before a product is introduced into the tube by the filler neck, then a second transverse weld when the product has been introduced into the tube, to close a package around the latter.

Le document WO-A-8900949 décrit un procédé de fabrication de sachets d'emballage comportant une étape qui consiste à générer au moins un pli sur un film destiné à constituer un sachet, pour former au moins un soufflet sur le sachet final.The document WO-A-8900949 describes a method for manufacturing packaging sachets comprising a step which consists in generating at least one fold on a film intended to constitute a sachet, to form at least one bellows on the final sachet.

Il en est de même des documents US-A-4854733 et US-A-4989993.The same is true of documents US-A-4854733 and US-A-4989993.

La présente invention a maintenant pour but de perfectionner les machines FFS connues.The present invention now aims to improve the known FFS machines.

Il est proposé dans le cadre de la présente invention, une machine de formation, remplissage et fermeture automatique de sachets d'emballage telle que définie en revendication 1 annexée.It is proposed in the context of the present invention, a machine for forming, filling and automatic closure of packaging bags as defined in claim 1 attached.

La présente invention concerne également un procédé de fabrication de sachets d'emballage sur une machine de formation, remplissage et fermeture automatique de sachets d'emballage, tel que défini dans le jeu de revendications annexées.The present invention also relates to a method for manufacturing packaging bags on a machine for forming, filling and automatically closing packaging bags, as defined in the set of appended claims.

D'autres caractéristiques, buts et avantages de la présente invention apparaîtront à la lecture de la description détaillée qui va suivre et en regard des dessins annexés donnés à titre d'exemples non limitatifs et sur lesquels :

  • la figure 1 représente une vue schématique d'une variante de profilés et bandes déposées transversalement sur un film pour former des soufflets de fond sur les sachets.
Other characteristics, aims and advantages of the present invention will appear on reading the detailed description which follows and with reference to the appended drawings given by way of nonlimiting examples and in which:
  • Figure 1 shows a schematic view of a variant of profiles and strips deposited transversely on a film to form bottom gussets on the bags.

Le film utilisé pour la réalisation des sachets est de préférence thermoplastique. Cependant, l'invention peut s'étendre à tout film souple susceptible de constituer un sachet d'emballage. Le sachet comporte un ensemble de fermeture formé de deux profilés de fermeture complémentaires 22 et 24, fixés sur la surface interne du sachet, au niveau de l'embouchure de celui-ci.The film used to make the bags is preferably thermoplastic. However, the invention can extend to any flexible film capable of constituting a packaging sachet. The bag comprises a closure assembly formed by two complementary closure profiles 22 and 24, fixed on the internal surface of the bag, at the mouth of the latter.

L'ensemble de fermeture peut être muni d'un cordon longitudinal facilitant l'ouverture du sachet.The closure assembly can be provided with a longitudinal cord facilitating the opening of the bag.

Le film 12 peut être un film souple simple monocouche ou un film complexe composé de différentes couches adjacentes, par exemple coextrudées.The film 12 can be a simple flexible single-layer film or a complex film composed of different adjacent layers, for example coextruded.

Selon une variante de réalisation la bande supportant les profilés 22 et 24 est soudée au moitié de sa largeur, sur le film 12. Ainsi on évite que la pression interne au sachet ne sollicite les profilés 22 et 24 à l'ouverture du fait que le support des profilés n'est pas relié sur les bords du film 12, en regard des profilés 22, 24, mais en deçà des profilés.According to an alternative embodiment, the strip supporting the sections 22 and 24 is welded to half its width, on the film 12. This prevents the internal pressure in the bag from requesting the sections 22 and 24 when the cover opens. support of the profiles is not connected to the edges of the film 12, opposite the profiles 22, 24, but below the profiles.

Le soufflet de fond peut être réalisé d'une couleur différente du corps du sachet.The bottom bellows can be made in a different color from the body of the bag.

On a schématisé sur la figure 1 une bande 50 en U, convexité dirigée vers l'arrière par rapport au sens de déplacement du film 12, reliée (venue de matière) initialement aux bandes support 23, 25 des profilés 22, 24. La bande 50 reliée aux profilés 22, 24, déposée sur le film 12, possède une longueur égale à la moitié de la largeur du film 12. Un côté de la bande en U et la bande support adjacente 23 sont soudés sur le film 12 au niveau du poste de dépôt, en amont du col de formage. L'autre côté de la bande en U et la seconde bande support 25 sont soudés sur la paroi interne du film 12 constituant l'emballage après repliement de ce film en configuration tubulaire et remplissage de l'emballage, c'est-à-dire lors de la finition de cet emballage, au niveau du poste de soudure transversale.There is shown diagrammatically in FIG. 1 a strip 50 in a U shape, convexity directed towards the rear relative to the direction of movement of the film 12, connected (coming from material) initially to the support strips 23, 25 of the profiles 22, 24. The strip 50 connected to the profiles 22, 24, deposited on the film 12, has a length equal to half the width of the film 12. One side of the U-shaped strip and the adjacent support strip 23 are welded to the film 12 at the level of the deposition station, upstream of the forming neck. The other side of the U-shaped strip and the second support strip 25 are welded to the internal wall of the film 12 constituting the packaging after folding of this film in tubular configuration and filling of the packaging, that is to say when finishing this packaging, at the transverse welding station.

Une telle bande 50 liée aux profilés 22, 24 peut être acheminée transversalement sur le film 12 grâce à tous moyens connus à cet effet.Such a strip 50 linked to the sections 22, 24 can be conveyed transversely on the film 12 by any means known for this purpose.

Bien entendu, il faut prévoir au niveau du poste de soudure transversale des moyens aptes à sectionner cette bande afin de séparer la bande 50 en U proprement dite, destinée à former un soufflet, et les profilés 22, 24, selon la ligne de découpe référencée 200 sur la figure 1. Ainsi après découpe selon la ligne 200, les profilés 22, 24 sont liés à la zone d'embouchure d'un sachet qui vient d'être individualisé, tandis que la bande 50 en U forme un soufflet de fond pour le sachet en cours de formation.Of course, it is necessary to provide at the level of the transverse welding station means capable of cutting this strip in order to separate the strip 50 in the actual U, intended to form a bellows, and the sections 22, 24, according to the cutting line referenced 200 in FIG. 1. Thus after cutting along line 200, the sections 22, 24 are linked to the mouth area of a sachet which has just been individualized, while the strip 50 in U forms a bottom gusset for the sachet being formed.

La disposition inverse peut être retenue, c'est-à-dire que l'ensemble formant bande 50 en U et profilés 22/24 peut être déposé convexité de la bande en U en avant par rapport à la direction de défilement.The reverse arrangement can be adopted, that is to say that the strip forming assembly 50 in U and sections 22/24 can be deposited convexity of the U strip in front with respect to the direction of travel.

Claims (10)

  1. A machine for automatically forming, filling, and closing bags made from a flexible film (12) provided with complementary closure ribs, the machine being characterized by the fact that it includes means suitable for conveying transversely a U-shaped strip (50) integrally made with the support strips (23, 25) for the closure ribs (22, 24), means suitable for fixing said U-shaped strip (50) and the associated support strips (23, 25) to the film (12), and means suitable subsequently for making a line of cut (200) between the U-shaped strip (50) and the strips (23, 25) supporting the ribs (22, 24).
  2. A machine according to claim 1, for forming bags based on film (12), in particular film made of thermoplastic material, the bags including closure ribs (22, 24) e.g. complementary male and female slideway closure ribs, the machine comprising a former that is fed with the film (12) in the plane state coming from pay-out means, and delivering the film (12) shaped into a tube; a filling chute which opens out into the former and consequently into said tube; longitudinal heat-sealing means for closing the tube longitudinally; and means suitable for generating sequentially a first transverse line of heat-sealing before a product is put into the tube via the filler chute, and then a second transverse line of heat-sealing when the product has been put into the tube, thereby closing a package around the product.
  3. A machine according to claim 1 or claim 2, characterized by the fact that the strip carrying the ribs (22 and 24) is heat-sealed to the film (12) in zones situated between the ribs (22, 24) and the center of the strip such that the pressure inside the bag does not stress the ribs (22, 24) on opening.
  4. A machine according to any one of claims 1 to 3, characterized by the fact that the film (12) is a simple single-layer flexible film or a composite film made up of a plurality of adjacent layers, e.g. by coextrusion.
  5. A machine according to any one of claims 1 to 4, characterized by the fact that the add-on strip is of a color that is different from the film forming the body of the bag.
  6. A machine according to any one of claims 1 to 5, characterized by the fact that it includes means suitable for conveying the U-shaped strip (50) transversely and for fixing said strip (50) to the film (12).
  7. A machine according to any one of claims 1 to 6, characterized by the fact that a first branch of the U-shaped strip (50) is fixed to the film (12) before it is put in the form of a tube, while the second branch of said strip (50) is fixed to the film (12) during the bag-finishing step.
  8. A machine according to any one of claims 1 to 7, characterized by the fact that the U-shaped strip (50) is of a length equal to half the width of the film (12).
  9. A method of manufacturing bags from a flexible film (12) provided with complementary closure ribs, by using an automatic forming, filling, and closure machine, the method being characterized by the fact that it includes the step consisting in conveying a U-shaped strip (50) transversely, which strip is integrally formed with support strips (23, 25) for the closure ribs (22, 24), in fixing said U-shaped strip (50) and the associated support strips (23, 25) to the film (12), and in subsequently forming a line of cut (200) between the U-shaped strip (50) and the strips (23, 25) supporting the ribs (22, 24).
  10. A method according to claim 9, characterized by the fact that a first branch of the U-shaped strip (50) is fixed to the film (12) before it is put into tubular form, while the second branch of said strip is fixed to the film (12) during the bag-finishing step.
EP97400407A 1996-02-27 1997-02-25 Automatic machine and method for forming, filling and closing packaging bags Expired - Lifetime EP0792801B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9602389A FR2745263B1 (en) 1996-02-27 1996-02-27 MACHINE AND METHOD FOR AUTOMATICALLY FORMING, FILLING AND CLOSING PACKAGING BAGS
FR9602389 1996-02-27

Publications (2)

Publication Number Publication Date
EP0792801A1 EP0792801A1 (en) 1997-09-03
EP0792801B1 true EP0792801B1 (en) 2003-09-10

Family

ID=9489600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400407A Expired - Lifetime EP0792801B1 (en) 1996-02-27 1997-02-25 Automatic machine and method for forming, filling and closing packaging bags

Country Status (6)

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US (1) US5826401A (en)
EP (1) EP0792801B1 (en)
AT (1) ATE249361T1 (en)
DE (1) DE69724680T2 (en)
ES (1) ES2205141T3 (en)
FR (1) FR2745263B1 (en)

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ATE249361T1 (en) 2003-09-15
EP0792801A1 (en) 1997-09-03
US5826401A (en) 1998-10-27
FR2745263B1 (en) 1998-05-07
FR2745263A1 (en) 1997-08-29
DE69724680D1 (en) 2003-10-16
ES2205141T3 (en) 2004-05-01
DE69724680T2 (en) 2004-07-22

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