EP3953260B1 - Procédé et dispositif de fabrication de sachets tubulaires remplis d'un mélange de constituants de matière de remplissage liquides et solides - Google Patents

Procédé et dispositif de fabrication de sachets tubulaires remplis d'un mélange de constituants de matière de remplissage liquides et solides Download PDF

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Publication number
EP3953260B1
EP3953260B1 EP20717096.0A EP20717096A EP3953260B1 EP 3953260 B1 EP3953260 B1 EP 3953260B1 EP 20717096 A EP20717096 A EP 20717096A EP 3953260 B1 EP3953260 B1 EP 3953260B1
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EP
European Patent Office
Prior art keywords
formatting
tubular bag
elements
compressing
film tube
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.)
Active
Application number
EP20717096.0A
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German (de)
English (en)
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EP3953260A1 (fr
Inventor
Gerhard Kuss
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Rovema GmbH
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Rovema GmbH
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Publication of EP3953260A1 publication Critical patent/EP3953260A1/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
    • B65B9/10—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
    • 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
    • B65B9/12—Subdividing filled tubes to form two or more packages by sealing or securing involving displacement of contents
    • 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
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • 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
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B3/16—Methods of, or means for, filling the material into the containers or receptacles for filling collapsible tubes
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/306—Counter-rotating 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/001—Arrangements to enable adjustments related to the product to be packaged
    • 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
    • B65B9/2007—Means for stripping or squeezing filled tubes prior to sealing to remove air or products from sealing area
    • 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
    • B65B9/2049—Package shaping devices acting on filled tubes prior to sealing the filling opening
    • 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
    • B65B2220/14—Adding more than one type of material or article to the same package

Definitions

  • the invention relates to a method for operating a tubular bag machine for the continuous production of tubular bags which are filled with a mixture of liquid and solid filling material components according to the preamble of the two independent main claims.
  • tubular bag machines are known for producing tubular bags when packaging mixtures of liquid and solid filling components.
  • These tubular bag machines comprise a biaxially driven cross-sealing device with two sealing jaws. These sealing jaws are moved along a predetermined path of movement and can attach bottom cross-seams and head cross-seams to a previously formed film tube in order to close the tubular bags from above or below.
  • these machines have a pressing device that comprises two pressing elements.
  • These pressing elements can be placed on the outside of the film tube.
  • the two pressing elements can horizontally between a closed position and an open position. In the closed position, the two pressing elements press the film tube together between them to such an extent that it is compressed liquid-tight.
  • the pressing elements prevent the contents from flowing down.
  • the pressing device is brought into its open position and the contents fall under the influence of gravity into the tubular bag, which is still open at the top.
  • a stripper is provided below the cross-sealing device of the generic tubular bag machine.
  • This stripper comprises two stripping elements that can be placed on the outside of the film tube and can be adjusted horizontally between a stripping position and an opening position. In the stripping position, the stripping elements rest on the outside of the film tube and press the two inner surfaces of the film tube against each other. If the stripping device is now moved downwards faster than the film tube, the solid filling components on the inside of the film tube are stripped downwards by the stripping elements. In this way, the stripping device can be used to free the sealing area of the tubular bag on the inside of the film web of solid filling components in order to enable the film tube to be sealed without any problems using the cross-sealing device.
  • the problem with the known machines is that the still open tubular bags bulge significantly in the area of the bottom seam after filling with the contents.
  • This bulged tubular bag is now sealed with the cross-sealing device by attaching the top seam is closed, a large amount of air is trapped in the area below the top seam.
  • This air in the tubular bag has a negative impact on the storage properties of the tubular bag, as oxidation processes of the contents within the tubular bag are particularly promoted by the oxygen contained in the air.
  • the strong bulging of the tubular bag causes an undesirable extension of the individual tubular bags between the bottom seam and the top seam, which leads to an increased consumption of film web and shorter cycle times in the production of the tubular bags.
  • the object of the present invention is to propose a new method for operating a tubular bag machine for the continuous production of tubular bags that are filled with a mixture of liquid and solid filling material components, whereby the air contained in the tubular bag is reduced, the necessary consumption of film web is reduced and the maximum cycle rate in the production of the tubular bags is increased. Furthermore, the object of the present invention is to propose a tubular bag machine for carrying out the method according to the invention.
  • the method according to the invention is based on the connection of a formatting device arranged below the stripping device.
  • This formatting device has the task of formatting the bag shape of the still open tubular bag, i.e. before the top seam is applied.
  • the formatting device comprises at least two formatting elements that can be brought into contact with the outside of the film tube.
  • the formatting elements can be adjusted between an open position and a formatting position.
  • the horizontal distance between the formatting elements is greater in the open position than in the formatting position.
  • the opened tubular bag can easily bulge out sideways in a known manner, so that the filling material can easily be introduced into the opened tubular bag.
  • the formatting elements of the formatting device are then brought into their formatting position, i.e. moved together horizontally.
  • the still open tubular bag is formatted in its shape, i.e. compressed in its width.
  • the liquid column of the filling material in the tubular bag rises and displaces air from the top area of the tubular bag.
  • the top seam can then be attached to the tubular bag either immediately or after carrying out further process steps in order to close the tubular bag in this way.
  • the result is then By formatting the tubular bag with the formatting elements, there is a significantly lower proportion of air or no air at all in the head area of the tubular bag, so that the storage properties of the tubular bag packaging in particular are significantly improved.
  • the length of the tubular bag required to accommodate the volume of the filling material can be reduced and the cycle rate of the tubular bag machine when producing the tubular bags can be increased.
  • the invention provides that the pressing device forms two retention zones in the closed position. In the lower retention zone, the film tube is compressed in a liquid-tight manner as usual in order to prevent the liquid filling material components from flowing through the pressing device in the closed position.
  • a second, upper retention zone is formed above the lower retention zone in which the film tube is compressed to such an extent, while maintaining a liquid-permeable residual gap, that solid filling material components cannot pass through the residual gap.
  • the two retention zones of the pressing device which are formed one above the other, ensure that the solid filling components are initially retained in the upper retention zone, with the liquid filling components passing through the upper retention zone through the remaining gap. These liquid filling components are then retained in the lower retention zone.
  • both retention zones are opened and the solid or liquid filling material can slide downwards into the opened tubular bag under the influence of gravity.
  • the film tube in the tubular bag machine is continuously pulled downwards.
  • the formatting elements of the formatting device that are in the formatting position on the outside of the tubular bag are moved vertically downwards at the same vertical speed as the cross-sealing device at the same vertical speed as the film tube. In this way, an undesirable relative movement between the formatting elements on the one hand and the film tube on the other is avoided.
  • the stripping device remains in the open position until the formatting device has been fully moved into the formatting position. Only after the formatting position has been reached has the liquid level in the opened tubular bag reached its highest point, so that no more air can be displaced from the opened tubular bag by the formatting device. Only from this moment on is the stripping device closed and the stripping of the solid filling components lying on the inside of the film material started.
  • the stripping elements of the stripping device lying on the outside of the tubular bag in the stripping position are adjusted vertically at a higher vertical speed than the tubular bag.
  • the difference in speed results in a relative movement between the stripping elements and the Film tube through which the solid filling components adhering to the inside of the film tube are stripped downwards.
  • At least one air-permeable ventilation channel is formed between the inner surfaces of the tubular bag in the stripping position of the stripping device, through which air can escape from the head area of the tubular bag. If the stripping elements of the stripping device in the stripping position are moved downwards with the corresponding relative movement relative to the film tube, this causes the solid filling components to be stripped downwards and at the same time displaces the air trapped in the head area of the tubular bag to the outside. This air displaced to the outside is led out through the ventilation channel between the inner surfaces of the tubular bag, so that as a result only very little or no residual air remains in the tubular bag.
  • the flow wrapping machine is designed in such a way that the formatting device is provided below the cross-sealing device, with which the still opened flow wrapping bag can be formatted in its shape.
  • the horizontal distance between the formatting elements in the opening position and/or the horizontal distance between the formatting elements in the formatting position is adjustable. By adjusting the respective distances, it is possible to react variably to the bulging of the opened tubular bag after filling with the filling material and the kinematics required in each case to displace the air from the head area of the tubular bag.
  • the structural design of the formatting elements of the formatting device is arbitrary. According to a preferred design, the formatting elements each comprise several rotatably mounted rollers that are arranged one below the other so that they run parallel to one another.
  • the rotatable rollers arranged one below the other thus form a wall on which the outside of the tubular bag can roll.
  • These two walls formed by the rollers of the two formatting elements can then be moved towards one another or away from one another. Together, the rollers of the two formatting elements thus form a formatting shaft that is adjustable in width and in which the opened tubular bags can be pressed together to format their shape. After the tubular bags have been transversely sealed and separated, they can then slide downwards out of the formatting shaft with essentially no resistance thanks to the rotatable rollers.
  • the formatting device and the cross-sealing device are driven vertically with a common drive device.
  • the stripping elements of the stripping device are elastically spring-mounted on the cross-sealing jaws. If the stripping elements are then in their stripping position and press the inner sides of the film web against each other and the stripping device then acts downwards relative to the film tube, the filling volume enclosed in the tubular bag is also reduced, so that the pressure of the residual air in the head area of the tubular bag increases accordingly. If this pressure of the residual air in the head area of the tubular bag exceeds a certain level, the spring-loaded stripping elements are pushed apart slightly and in this way an air-permeable ventilation channel is formed between the inner surfaces of the tubular bag. The air can then escape from the head area of the tubular bag to the outside through this ventilation channel.
  • the pressing device comprises two pressing elements arranged one above the other in pairs, for example pressing rollers.
  • the distance between the two lower pressing elements is smaller, so that the two lower pressing elements arranged in pairs press the film tube together in a liquid-tight manner when the pressing device is in the closed position.
  • the two upper pressing elements arranged in pairs are spaced further apart, so that a liquid-permeable residual gap remains in the upper pressing zone when the pressing device is in the closed position.
  • the width of the gap in the upper pressing zone is selected so that the solid filling material components cannot pass through the upper pressing zone.
  • the type of pressing element used to form the pressing device is arbitrary. It is particularly advantageous if the pressing elements are designed in the form of pressing rollers, as the pressing rollers can roll on the film tube and in this way enable the relative movement between the pressing element and the film tube without any problems.
  • the pressing rollers can be driven by a motor.
  • Fig.1 shows a tubular bag machine 01 according to the teaching of the invention for carrying out the method according to the invention in a side view.
  • a film web 03 is unwound from a supply roll 02 and formed into a film tube on a forming device 04.
  • the film tube is then sealed at the longitudinal seam with a longitudinal sealing device 05.
  • a film take-off device 06 ensures the continuous advance of the longitudinally sealed film tube.
  • the film tube is guided over a tubular filling tube 07, with the inside of the film tube sliding down the outside of the filling tube 07.
  • a spreading element 08 is attached to the lower end of the filling tube 07, which initially circular in cross-section, the film tube is spread out sideways.
  • Liquid and solid filling material for example a mixture of cabbage and brine or vegetables and brine, can be fed in from above through the filling pipe 07.
  • the filling material can be collected in the film tube above a pressing device 09.
  • the maximum and minimum filling level of the filling material in the film tube can be measured and regulated using two level sensors 10 and 11.
  • Below the transverse sealing device 12 there is a stripping device 16 with two stripping elements 17.
  • a formatting device 18 with two formatting elements 19, with which the tubular bags 20, which are still open at the head seam, can be formatted in their shape after being filled with filling material.
  • Fig.2 shows the part of the tubular bag machine 01 below the filling tube 07 in an enlarged perspective view.
  • the pressing device 09 consists of two pairs of pressing rollers 21 and 22 arranged opposite each other.
  • the pressing rollers 21 and 22 are mounted together in a frame 23 which can be opened or closed horizontally.
  • the pressing device 09 In the position shown, the pressing device 09 is in its pressing position. In this pressing position, the two lower pressing rollers 21 press the film tube in a lower pressing zone 24 so tightly against each other that liquid filling components from above cannot flow downwards.
  • the two pressure rollers 22 have Fig.2 shown pressing position of the pressing device 09, so that the gap formed between the pressing rollers 22 allows liquid filling components to flow through, whereas solid filling components are held back above the upper pressing zone 25 formed by the two pressing rollers 22.
  • the pressing device 09 By operating the pressing device 09, the amount of filling material that is to be filled into the next tubular bag 20 can be precisely dosed with the aid of the sensors 10 and 11.
  • the pressing device 09 can be moved from the position shown in Fig.2
  • the film tube can be opened from the pressing position shown in the figure to the opening position so that the dosed amounts of liquid and solid contents slide downwards into the next tubular bag.
  • the cross-sealing device 12 with the two cross-sealing jaws 13 and 14 and the separating device 15.
  • the cross-sealing jaws 13 and 14 can be positioned between the Fig.2 shown opening position and a sealing position that compresses the film tube.
  • the cross-sealing jaws can be moved vertically in order to follow the path of the film tube that is continuously conveyed vertically downwards.
  • the stripping device 16 with the two stripping elements 17. This is followed by the formatting device 18 with the two formatting elements 19.
  • the formatting elements 19 each consist of several rotatably mounted rollers 26 that are held one above the other on a frame 27.
  • the two frames 27 can be moved vertically with appropriate operating devices 28 to follow the movement of the film tube and at the same time to change the distance can be moved horizontally between the two formatting devices 19.
  • Fig.3 shows the tubular bag machine 01 with the filling tube 07, the pressing device 09, the cross-sealing device 12, the stripping device 16 and the formatting device 18 in a side view.
  • the tubular bags 20 are filled in the tubular bag machine 01 with a mixture of liquid filling material 29 and solid filling material 30.
  • the function of the tubular bag machine 01 for carrying out the method according to the invention is explained below with reference to the drawings.
  • Fig. 4a, 4b and 4c be explained in more detail.
  • the formatting device 18 is in its open position and has a maximum distance between the two formatting elements 19.
  • the tubular bag 20 which is initially only transversely sealed at the bottom seam 31, is filled with the mixture of liquid filling material components 29 and solid filling material components 30.
  • the tubular bag 20 When filled with the filling material components 29 and 31, the tubular bag 20 initially surfaces widely and an air cushion 32 forms in the tubular bag 20 above the liquid level of the liquid filling material components 30.
  • the formatting device 18 In order not to seal the air from the air cushion 32 in the tubular bag 20, the formatting device 18 is then moved into its Fig. 4b shown formatting position. In the formatting position, the formatting elements 19 are spaced closer together so that the air from the air cushion 32 is displaced upwards in the direction of the filling tube 07. A large proportion of the air from the air cushion 32 escapes from the tubular bag 20 because the top seam is not yet transversely sealed. As soon as the liquid contents have risen as far as possible by adjusting the formatting elements 19 to their formatting position, the stripping elements, which are initially still open, are moved together horizontally in order to come to rest elastically from the outside on the film web of the film tube.
  • the transverse sealing jaws 14 together with the stripping elements 17 attached to them are accelerated vertically so that the stripping elements are guided downwards past the film tube at a differential speed.
  • the speed of the stripping elements 17 is higher in the vertical direction than the vertical conveying speed of the film tube so that the solid filling material components lying on the inside are stripped downwards by the compressed stripping elements 17.
  • the solid filling material components can be removed from the sealing zone.
  • the volume available for receiving the air cushion 32 in the tubular bag 20 is further reduced so that the pressure in the air cushion 32 increases and the air from the air cushion 32 is displaced upwards by the stripping elements 17 on the inside of the film tube.
  • the transverse sealing jaws 14 of the transverse sealing device 12 are moved together and the top seam of the tubular bag 20 is sealed, thereby closing the tubular bag 20.
  • the tubular bag 20 is then separated by driving the separating device 15 and can fall downwards through the formatting shaft formed by the formatting elements 19.
  • the pressing rollers 21 and 22 of the pressing device 09 are moved into their open position so that the filling material components 29 and 30 slide down from above and fill the next tubular bag 20.
  • Fig.5 shows the movement path of the cross-sealing jaws 13 and 14 and the stripping elements 17 attached to them in a schematic view.
  • the stripping elements 17 already rest against the film tube 34 and are moved vertically together with the cross-sealing jaws 13 and 14 at a vertical speed downwards, which is higher than the vertical conveying speed of the film tube 34.
  • solid filling material components 30 are stripped downwards and at the same time the air is displaced from the air cushion 32 before the top seam is produced in the tubular bag 20.
  • the cross-sealing jaws 13 and 14 are then moved together along a second track section 35 and the top seam of the tubular bag 20 and the bottom seam of the subsequent tubular bag 20 are sealed.
  • the cross-sealing jaws 13 and 14 are driven vertically downwards together with the stripping devices 17 at the same vertical conveying speed as the film tube 34, so that as a result there is no relative movement along the second track section 35 between the film tube 34 on the one hand and the cross-sealing jaws 13 and 14 or the stripping devices 17.
  • Fig.6 shows the cross-sealing jaws 13 and 14 with the separating device 15 and the stripping elements 17 attached below the cross-sealing jaws 13 and 14 in an enlarged schematic representation.
  • the stripping elements 17 are mounted in a spring-elastic manner so that they can be adjusted horizontally, so that the air pressure that increases in the air cushion 32 when the stripping elements 17 are adjusted along the first track section 33 ensures that the air can push the stripping elements 17 apart slightly so that the air escapes from the air cushion 32.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Claims (13)

  1. Procédé de fonctionnement d'une machine (01) à sacs tubulaires pour la production continue de sacs tubulaires (20), qui sont remplis d'un mélange de composants de remplissage (29, 30) liquides et solides, la machine (01) à sacs tubulaires ayant
    a) un dispositif (12) de scellage transversal à entraînement biaxial, les mâchoires (13, 14) de scellage transversal du dispositif (12) de scellage transversal scellant une bande de film (03) après avoir formé un tube de film (34) ayant un joint inférieur (31) et un joint supérieur,
    b) un dispositif de compression (09) qui est disposé au-dessus du dispositif (12) de scellage transversal, le dispositif de compression (09) comprenant au moins deux éléments de compression (21, 22), qui sont en contact avec le côté extérieur du tube de film (34) et sont déplacés horizontalement entre une position fermée et une position ouverte, et les éléments de compression (21, 22) comprimant le tube de film (34) de manière étanche en position fermée,
    c) un dispositif racleur (16), qui est disposé sous le dispositif (12) de scellement transversal, le dispositif racleur (16) comprend au moins deux éléments racleurs (17), qui sont en contact avec le côté extérieur du tube de film (34) et sont déplacés horizontalement entre une position racleuse et une position ouverte, les éléments racleurs (17) en position racleuse raclant les composants de remplissage (30) solides vers le bas qui se trouvent dans la zone de scellage sur le côté intérieur du tube de film (34),
    un dispositif de formatage (18), au moyen duquel la forme du sac tubulaire (20) ouvert au niveau du joint supérieure est formatée, étant disposé sous le dispositif racleur (16), le dispositif de formatage (18) comprenant au moins deux éléments de formatage (19), qui sont en contact avec le côté extérieur du tube de film (34) et sont déplacés entre une position ouverte et une position de formatage, la distance horizontale entre les éléments de formatage (19) étant plus grande en position ouverte qu'en position de formatage, et les éléments de formatage (19) étant déplacés en position ouverte avant et/ou pendant le remplissage du sac tubulaire (20) avec les composants de remplissage (29, 30), et les éléments de formatage (19) étant déplacés en position de formatage pendant et/ou après le remplissage du sac tubulaire (20) avec les composants de remplissage (29, 30) et avant la production du joint supérieur pour éliminer l'air de la bulle d'air (32) dans la zone supérieure du sac tubulaire (20) via les composants de remplissage (29, 30),
    caractérisé en ce que
    le dispositif de compression (09) forme deux zones de retenue (24, 25) en position fermée, le tube de film (34) étant comprimé de manière étanche aux liquides dans la zone de retenue inférieure (24), et le tube de film (34) étant comprimé si étroitement dans la zone de retenue supérieure (25) tout en maintenant un espace résiduel perméable aux liquides que les composants de remplissage solides (30) ne peuvent pas passer à travers l'espace résiduel.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    les éléments de formatage (19) du dispositif de formatage (18), qui butent contre le côté extérieur du sac tubulaire (20) en position de formatage, sont déplacés verticalement à la même vitesse verticale que le tube de film (34).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    le dispositif racleur (16) reste en position ouverte jusqu'à ce que le dispositif de formatage (18) soit placé en position de formatage.
  4. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    les éléments racleurs (17) du dispositif racleur (16), qui butent contre le côté extérieur du sac tubulaire (20) en position racleuse, sont déplacés verticalement le long d'une section de trajectoire (33) à une vitesse verticale plus élevée que celle du sac tubulaire (34).
  5. Procédé selon l'une des revendications 1 à 4,
    caractérisé en ce
    qu'au moins un canal d'aération perméable à l'air est formé entre les côtés intérieurs du sac tubulaire (20) en position racleuse du dispositif racleur (16), l'air pouvant s'échapper de la bulle d'air (32) dans la zone supérieure du sac tubulaire (20) par le canal d'aération.
  6. Procédé selon revendication 5,
    caractérisé en ce que
    le joint supérieur du sac tubulaire (20) est scellée transversalement à l'aide du dispositif (12) de fermeture transversale dès que l'air de la bulle d'air (32) dans la zone supérieure du sac tubulaire (20) s'est échappé par le canal d'aération perméable à l'air entre les côtés intérieurs du sac tubulaire (20) à l'exception d'un reste insignifiant d'air.
  7. Machine (01) à sacs tubulaires pour la production continue de sacs tubulaires (20), qui sont remplis d'un mélange de composants de remplissage (29, 30) liquides et solides, la machine (01) à sacs tubulaires comportant
    a) un dispositif (12) de scellage transversal à entraînement biaxial, les mâchoires de scellage transversal (13, 14) du dispositif (12) de scellement transversal scellant une bande de film (03) après avoir formé un tube de film (34) ayant un joint inférieur (31) et un joint supérieur,
    b) un dispositif de compression (09) qui est disposé au-dessus du dispositif (12) de scellement transversal, le dispositif de compression comprenant au moins deux éléments de compression (21, 22), qui sont en contact avec le côté extérieur du tube de film (34) et sont déplacés horizontalement entre une position fermée et une position ouverte, et les éléments de compression (21, 22) comprimant le tube de film (34) de manière étanche en position fermée,
    c) un dispositif racleur (16) qui est disposé sous le dispositif (12) de scellement transversal, le dispositif racleur (16) comprenant deux éléments racleurs (17), qui sont en contact avec le côté extérieur du tube de film (34) et sont déplacés horizontalement entre une position racleuse et une position ouverte, les éléments racleurs (17) en position racleuse étant capables de racler les composants de remplissage (30) solides vers le bas qui se trouvent dans la zone de scellage sur le côté intérieur du tube de film, un dispositif de formatage (18), au moyen duquel la forme du sac tubulaire (20) ouvert au niveau du joint supérieur est formatée, étant disposé en dessous du dispositif racleur (16), le dispositif de formatage (18) comprenant au moins deux éléments de formatage (19), qui sont en contact avec le côté extérieur du tube de film (34) et sont déplacés entre une position ouverte et une position de formatage, la distance horizontale entre les éléments de formatage (19) étant plus grande en position ouverte qu'en position de formatage,
    caractérisé en ce que
    le dispositif de compression (09) comprend deux paires d'éléments de compression (21, 22) pour former deux zones de retenue (24, 25), les éléments de compression (21, 22) de chaque paire étant superposés, la première paire d'éléments de compression (21) comprimant le tube de film (34) dans une zone de retenue inférieure (24) en position fermée du dispositif de compression (09) de manière à être imperméable au liquide, et la deuxième paire d'éléments de compression (22) comprimant le tube de film (34) dans une zone de retenue supérieure (25) en position fermée du dispositif de compression (09) si étroitement que le tube de film (34) retienne les composants de remplissage (30) solides tout en maintenant un espace résiduel perméable aux liquides.
  8. Machine à sacs tubulaires selon la revendication 7,
    caractérisée en ce que
    la distance horizontale entre les éléments de formatage (19) en position ouverte et/ou la distance horizontale entre les éléments de formatage (19) en position de formatage est réglable.
  9. Machine à sacs tubulaires selon la revendication 7 ou la revendication 8,
    caractérisée en ce que
    les éléments de formatage (19) du dispositif de formatage (18) comprennent chacun plusieurs rouleaux (26) stockés en rotation, les rouleaux (26) étant disposés de manière à être parallèles les uns aux autres, et les rouleaux (26) des deux éléments de formatage (19) formant ensemble une chute de rouleaux pouvant être en contact sur deux côtés du sac tubulaire (20).
  10. Machine à sacs tubulaires selon l'une quelconque des revendications 7 à 9,
    caractérisée en ce que
    le dispositif de formatage (18) et le dispositif (12) de scellage transversal sont entraînés verticalement à l'aide d'un dispositif d'entraînement commun.
  11. Machine à sacs tubulaires selon l'une quelconque des revendications 7 à 10,
    caractérisée en ce que
    les éléments racleurs (17) du dispositif racleur (16) sont montés élastiquement sur les mâchoires (13, 14) de scellage transversales du dispositif (12) de scellage transversal, les éléments racleurs (17) se repliant lorsqu'ils dépassent une certaine surpression dans la bulle d'air (32) dans la zone supérieure du sac tubulaire (20) afin de former un canal d'aération perméable à l'air entre les côtés intérieurs du sac tubulaire (20), l'air de la bulle d'air (32) dans la zone supérieure du sac tubulaire (20) s'échappant par le canal d'aération.
  12. Machine à sacs tubulaires selon l'une quelconque des revendications 7 à 11,
    caractérisée en ce que
    les éléments de compression (21, 22) du dispositif de compression (09) sont conçus à la manière de rouleaux de compression.
  13. Machine à sacs tubulaires selon l'une quelconque des revendications 7 à 12,
    caractérisée en ce que
    les rouleaux de compression (21) sont au moins partiellement entraînés par un moteur.
EP20717096.0A 2019-04-10 2020-03-17 Procédé et dispositif de fabrication de sachets tubulaires remplis d'un mélange de constituants de matière de remplissage liquides et solides Active EP3953260B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019109484 2019-04-10
DE102019111754.2A DE102019111754A1 (de) 2019-04-10 2019-05-07 Verfahren und Vorrichtung zur Herstellung von Schlauchbeuteln, die mit einer Mischung aus flüssigen und festen Füllgutbestandteilen befüllt werden
PCT/EP2020/057280 WO2020207719A1 (fr) 2019-04-10 2020-03-17 Procédé et dispositif de fabrication de sachets tubulaires remplis d'un mélange de constituants de matière de remplissage liquides et solides

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EP3953260B1 true EP3953260B1 (fr) 2024-05-01

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US6826892B2 (en) * 2003-01-09 2004-12-07 Glopak Inc. Vertical form, fill and seal machine for handling large pouches
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US9266630B2 (en) * 2009-02-25 2016-02-23 Liqui-Box Corporation Process for pouch forming with optimized fill-accuracy and headspace
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DE102019111754A1 (de) 2020-10-15
US20220267037A1 (en) 2022-08-25
WO2020207719A1 (fr) 2020-10-15

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