EP1623926B1 - Procédé et dispositif pour la fabrication et le remplissage de sacs - Google Patents

Procédé et dispositif pour la fabrication et le remplissage de sacs Download PDF

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Publication number
EP1623926B1
EP1623926B1 EP05015305A EP05015305A EP1623926B1 EP 1623926 B1 EP1623926 B1 EP 1623926B1 EP 05015305 A EP05015305 A EP 05015305A EP 05015305 A EP05015305 A EP 05015305A EP 1623926 B1 EP1623926 B1 EP 1623926B1
Authority
EP
European Patent Office
Prior art keywords
tubular material
bags
bag
tube
handle holes
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
EP05015305A
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German (de)
English (en)
Other versions
EP1623926A3 (fr
EP1623926A2 (fr
Inventor
Hans-Ludwig Voss
Rüdiger Grosse-Heitmeyer
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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.)
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Publication date
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Priority to PL05015305T priority Critical patent/PL1623926T3/pl
Publication of EP1623926A2 publication Critical patent/EP1623926A2/fr
Publication of EP1623926A3 publication Critical patent/EP1623926A3/fr
Application granted granted Critical
Publication of EP1623926B1 publication Critical patent/EP1623926B1/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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/14—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for incorporating, or forming and incorporating, handles or suspension means in packages
    • B65B61/16—Forming suspension apertures in packages
    • 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
    • B65B9/13—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 preformed tubular webs being supplied in a flattened state

Definitions

  • the invention relates to a method and an apparatus for producing and filling bags according to claims 1 and 13.
  • FFS machines form, fill and seal machines
  • film hoses are formed for processing on the FFS machines by blown film extrusion, the format of which (here the circumference thereof) coincides with that of the sack formed.
  • this procedure leads to the fact that already relatively expensive format changes have to be made on the extrusion lines in order to be able to realize different bag formats.
  • format change more cost effective
  • very wide film webs are often first produced by flat film extrusion or by blown film extrusion on large format equipment.
  • the resulting film tubes or film webs of large format were then further processed by flat format cutting to flat film webs.
  • flattened film webs are folded into a tube and connected by a longitudinal weld to a hose.
  • the described production methods for tubular films are followed by winding devices, which wind the films after their production or after further processing steps (eg the printing) to wind them, which can then be transported in a simple manner.
  • bags made from these films various products are filled. These products, which are filled in the described sacks and with the described FFS machines, also include products of the consumer goods industry.
  • the bags filled with consumer goods are often distributed through the retail sector and are therefore usually of higher value.
  • the bags are usually provided with handle holes. Such grip holes are incorporated into the tubular film in known manufacturing processes before being wound up into coils.
  • a method and a device are known with which also handle holes in already isolated sacks or From the Patent GB 1 455 570 are known a method and an apparatus according to the preamble of claims 1, 13, with which also handle holes can be introduced into already isolated sacks or bags.
  • the tubular material is unwound from a unwinding device and fed to a bag-forming device, the unwound, tubular material or the bags in the bag-forming device with handle holes.
  • the handle holes are thereby introduced into the tubular material, while the later, but already filled bag is separated from the tubular material.
  • EP 1 612 149 are known a method and a device according to the preamble of claims 1 and 13, respectively. This document falls under Art. 54 (3) EPC.
  • the object of the present invention is therefore to propose a method and a device with which bags with handle holes can be produced more cheaply and at high speed.
  • this object is achieved by a method having the features of the characterizing part of claim 1 and by a device having the features of the characterizing part of claim 13.
  • the unwound, tubular material is provided with handle holes before the tube pieces are filled, the tube piece, which was provided in the previous working cycle with transverse welds and handle holes, is separated.
  • Handle holes can be formed by cutting out or punching material out of the tubular film. However, even simple cuts can be made in the film, so that tabs arise, which are firmly connected to the rest of the material.
  • the grip holes are defined in this way and arise completely when the tabs are folded over, for example by first grasping the handle holes.
  • the grip holes are introduced from the tubular film immediately before the production of sacks or pieces of hose.
  • the film must be transported intermittently, ie intermittently. Therefore, it is of particular advantage, then make the making of grip holes.
  • the formation of the grip holes can take place before the transverse weld seams are formed.
  • the tubular material can be provided with diagonal welds before or after forming the grip holes, which at the later sacks form so-called corner welds, which increase the stability of the sacks.
  • the sacks in the bag-forming device are also filled.
  • a piece of hose which is held by retaining means for the purpose of forming transverse seams and grip holes, can be supplied by these or further holding means to a filling device.
  • the time-consuming storing, storing and resuming the hose pieces is eliminated.
  • the transport through the bag forming device advantageously take over as a gripper executed holding means.
  • the grippers can each be present in pairs, wherein they grip around the hose pieces laterally in the region of the upper edge. It may be necessary to transfer the piece of hose from one gripper pair to another gripper pair. For this purpose, transfer positions are provided, where briefly hold both pairs of grippers the hose piece.
  • the transport of the pieces of hose or sacks takes place at least half in the horizontal direction, d. H. that with each movement of the hose pieces or sacks the horizontal distance exceeds the vertical distance.
  • the tubular material can be provided with grip holes during the stoppage phases of the intermittent transport.
  • the tools for providing the film with grip holes in this case, for example, need only be moved perpendicular to the film surface. A movement component of these tools in the transport direction of the film is therefore not necessary. This leads to a mechanically simple embodiment of a device for carrying out the method.
  • contour welds are made which surround the grip holes. These contours can then form closed curves on the sheet material. In this way, the grip holes are surrounded by welds, so that later no product can get to the handle holes and escape through them from the bag.
  • gripping holes, transverse welds and possibly also the other welds are carried out simultaneously or at least within one work cycle.
  • all necessary tools are only slightly spaced from each other.
  • the tools for the transverse welding, the Griffloch Struktur and the other welds can be arranged on a tool carrier, which is moved relative to the film. It is understood that the individual tools can also be arranged on several tool carriers. Therefore, for Griffloch Struktur only a few other components that are essentially limited to a knife or a punching tool and a counter-position, necessary.
  • gusseted tube It is particularly advantageous to use a gusseted tube.
  • the process can be carried out with a simple tubular film, the gusseted hose offers particular advantages, such as better handling and greater stability.
  • a device has means for providing the tubular material or the bags with grip holes.
  • These means have contour knives, with which the grip holes are generated.
  • the contour of the contour knife provides an open curve, so that the grip holes consist of tabs which are folded over only when the bag is gripped.
  • Fig. 1 shows a tubular film 4 with side gussets 41 according to the prior art, which is located on a winding 3.
  • This film 4 is provided for the production of sacks, which are later filled with a filling material.
  • the tubular film 4 was provided with grip holes 43 prior to winding, to later obtain sacks having grip holes therefrom.
  • the tubular film 4 was also already provided with transverse welds 42. Parallel to these 42, the tubular film 4 is separated later to pieces of tubing 18. These pieces of tubing 18 are later filled and closed with another weld 48.
  • the roll 3 from the tubular film 4 prepared in this way is fed to a further processing device, which produces hose pieces 18 therefrom.
  • FIG. 2 shows a bag forming apparatus.
  • This device 1 comprises a support arm 2, on which a winding 3 with tubular film 4 rests.
  • the tubular film 4 has gussets, not shown.
  • the transport rollers 5, which may also be driven in part, provide for a, usually continuous, development of the tubular film 4.
  • the acted upon by a piston-cylinder unit 10 with a load lever 9, which carries a guide roller 6 and a total is often referred to as a dancer, and the Transport roller 7, 8 and the feed roller pair 15 ensure in a generally known manner that the tubular film 4 is intermittently moved intermittently on their further transport path intermittently.
  • the transport roller 8a is part of a register device 29, with which the length of the transport path of the tubular film 4 can be adapted to the format of the later bags.
  • the transport roller 8a is arranged relative to the device 1 so as to be displaceable.
  • To move is a manual or electric motor operated and known per se spindle drive available.
  • the tubular film 4 passes through a station 28 for the introduction of grip holes 43.
  • This station 28 consists essentially of a punching or cutting tool 34 and an abutment 35.
  • the station 28 can also have means for applying welds For example, of diagonal or Eckabsch spa 11, 46 and / or contour welds have.
  • the punching or cutting process or the welding process takes place during the stoppage phases of the intermittent transport.
  • a cooling station 12 in which the welds are cooled.
  • the tubular film 4 is pushed through the welding jaws 33 of a transverse welding station 13 and through a cross-cutting station 16.
  • the tools of the transverse welding station 13 and the cross cutting station 16 can be moved in a manner not described in detail, for example by a parallelogram 14, in planes orthogonal to the feed direction of the tubular film 4 to and from this.
  • a piece of tubing 18 is separated from the tubular film 4 above the gripper 17 in the cross-cutting station 16.
  • a transverse weld is attached, which the bottom or the head side of the next working cycle the device 1 to be formed hose piece 18 represents.
  • bags with handle holes are advantageously filled from the bottom side so that they do not have to be filled by the area in which the handle holes are located. Accordingly, 13 head seams are generated in the transverse welding station. In general, however, the manufacture of the head or bottom seams may not only be effected by transverse welding, although preferably, but also other joining methods, such as gluing, are conceivable.
  • the grippers 17 convey the tube piece 18 to a transfer point at which further grippers 19 grasp the tube piece 18 and transport it to a filling station 20. There, the tube piece 18 is transferred to stationary gripper 21 and opened by the suckers 22, so that the contents, which is passed through the filler neck 23, can get into the tube piece 18.
  • the hose piece lies with its lower end on a conveyor belt 24, so that the hose piece 18 is not excessively loaded along its longitudinal edges during the filling process.
  • Further grippers 25 convey the filled tube piece to the head or bottom seam welding station 26, in which the tube piece 18 is closed with a top or bottom weld seam and thus forms a finished bag 27. Also, the closing of the tube piece 18 in its head area can be done by a different joining method.
  • the finished sack is guided out of the device 1 by the conveyor belt 24.
  • the Fig. 3 shows a section of a device according to the invention, with which the inventive method can be performed.
  • This section shows in addition to the feed roller pair 15, which provides in the manner already described for the transport of the tubular film 4, a transverse welding, Querschneide- and Grifflochstanzstation 31, which at the location of in Fig. 2 shown transverse welding station 13 and cross cutting station 16 occurs.
  • a transverse welding, Querschneide- and Grifflochstanzstation 31 which at the location of in Fig. 2 shown transverse welding station 13 and cross cutting station 16 occurs.
  • the transverse welding, cross cutting and Grifflochstanzstation 31 has two tool carrier 32, 32 ', which in Direction to the tubular film 4 and can be moved away from this again.
  • tool carriers 32, 32 ' each carry two transverse welding bars 33, whereby a transverse weld seam can be attached to the tubular film 4 by cooperation between two opposing transverse welding bars 33.
  • a punching or cutting tool 34 is attached to the tool carrier 32 '. This provides for the introduction of a handle hole 43 in the tubular film 4.
  • a counter-layer 35 is attached to support the film 4 during the punching or cutting process. For punching or cutting, it may be necessary for the punching or cutting tool 34 to travel a distance that extends beyond the path of the tool carrier 32 '. Therefore, the punching or cutting tool 34 can be displaced by a displacement unit 36 relative to the tool carrier 32 '.
  • a piston-cylinder unit is used as a displacement unit 36.
  • a piece of tubing 18 is separated, which was provided in the previous power stroke with transverse welds and handle holes.
  • these 4 are gripped by gripper pairs 38 and 39 shortly before.
  • the Fig. 4 shows a bag 27, which with a device 1 according to the FIG. 2 in which a transverse welding, cross cutting and punch hole punching station 31 is disposed, and the station for attaching to the station for inserting grip holes 28 is not present.
  • This bag 27 has gussets 41.
  • the invention also relates to a method and a device with which also tubular material can be processed without gussets.
  • two transverse weld seams 42 were attached to the bag 27 or to the tubular bag 4 forming the later bag 27, which extend over the entire width of the bag 27. Between these transverse welds 42, a grip hole 43 has been inserted into the tubular film 4.
  • This grip hole 43 consists of a section representing an open curve.
  • the cut can be interrupted with webs, so that the tab formed by the cut remains in the plane of the film material until the bag is first grasped by the grip hole 43. In this way, a disturbance of a subsequent transport or stacking operation is avoided.
  • the illustrated arrangement of the transverse welds 42 and the handle hole 43 prevents the contents, which is filled through the lower end 44 of the bag 27, escapes again through the handle hole 43. After filling the bag 27 this is in the top or bottom seam welding station 26 (see Fig. 2 ) closed with a bottom weld 45.
  • the Fig. 5 shows a further bag 27, which can be prepared by the method according to the invention and in a device 1 according to the invention.
  • This bag 27 corresponds to that in the Fig. 4 shown bag, but added to more welds.
  • These further welds are corner welds 46 and longitudinal weld seams 47.
  • the corner welds 46 and the longitudinal weld seams 47 at the lower end 44 of the bag 27 are advantageously applied prior to filling the bag.
  • Eckabsch spasch spa aus 46 and longitudinal welds 47 can be provided especially in heavy material to minimize the forces on the points in which meet the transverse welds 42, 45 with the outer edges of the bag, which are usually weak points of a bag 27.
  • FIG. 6 shows a variation of a bag according to FIG. 5 ,
  • the spaced apart from the head end weld 42 extends (see Fig. 4 ) only between the longitudinal welds 47. In this way, crossing points between a transverse weld and the outer edges of the bag 27 can be saved.
  • FIG. 7 shows another bag 27. This was on the spaced from the head end weld 42 (see Fig. 4 ) waived. However, so that no filling material can escape through the grip hole 43, this 43 is surrounded by a weld 48, which forms a closed curve, which may be elliptical, for example.
  • FIG. 8 shows a variation of the bag 27 of FIG. 7 ,
  • the weld 48 here forms no closed, but an open curve, which begins at the transverse weld 42 and ends.
  • the handle hole 43 is completely surrounded by welds here, so that no filling material can escape.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Basic Packing Technique (AREA)

Claims (15)

  1. Procédé de fabrication et de remplissage de sacs avec des trous de préhension (43), qui sont formés à partir d'un matériau tubulaire (4),
    - dans lequel le matériau tubulaire (4) est déroulé d'un dispositif de déroulement (2, 3, 5) et est amené à un dispositif de formation de sacs (1),
    - dans lequel le matériau tubulaire déroulé (4) ou les sacs (27) sont pourvus dans le dispositif de formation de sacs (1) de trous de préhension (43),
    - dans lequel, du matériau tubulaire, un tronçon tubulaire est séparé et est muni en même temps de trous de préhension,
    caractérisé en ce que le matériau tubulaire déroulé (4) ou les tronçons tubulaires (18) sont pourvus dans le dispositif de formation de sacs (1) de trous de préhension (43) avant que les tronçons tubulaires (18) ne soient remplis, où le tronçon tubulaire (18), qui a été pourvu lors de la phase de travail précédente de soudures transversales et de trous de préhension (43), est séparé.
  2. Procédé selon la revendication 1, caractérisé en ce que la formation des sacs est exécutée dans le dispositif de formation de sacs (1), en ce qu'une extrémité de sac est formée par des soudures transversales (42, 45) dans le matériau tubulaire (4).
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce que la formation des sacs est exécutée dans le dispositif de formation des sacs (1) par séparation du matériau tubulaire (4) en tronçons tubulaires (18) après que le matériau tubulaire (4) a été muni de trous de préhension (43).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'aussi le remplissage des European Patent Application No. 05015305.5 sacs (27) est exécuté dans le dispositif de formation de sacs.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que les tronçons tubulaires (18) ou sacs (27), pendant au moins une partie de leur chemin dans le dispositif de formation de sacs (1), sont transportés par des griffes (17, 19, 25).
  6. Procédé selon la revendication précédente, caractérisé en ce que les griffes (17, 19, 25) entourent les tronçons tubulaires (18) ou les sacs (27) au voisinage de leurs arêtes extérieures (31), où le tronçon tubulaire (18) ou sac (27) pend vers le bas.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que les tronçons tubulaires (18) ou sacs (27) sont transportés horizontalement au moins à moitié.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que le matériau tubulaire (4) est pourvu dans le dispositif de formation des sacs (1) pendant les phases d'arrêt du transport intermittent de trous de préhension (43).
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que le matériau tubulaire est pourvu de soudures diagonales (46).
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que le matériau tubulaire (4) est pourvu de soudures de contour (48), où des courbes fermées (48) sont produites qui entourent les trous de préhension (43).
  11. Procédé selon l'une des revendications 2 à 8, caractérisé en ce que le matériau tubulaire (4) est pourvu à l'intérieur d'une phase de travail d'au moins deux soudures transversales (42) et de trous de préhension (43).
  12. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'en tant que matériau tubulaire (4), un tuyau à plis latéraux est utilisé.
  13. Dispositif (1) pour la fabrication et le remplissage de sacs (27) avec des trous de préhension (43), qui peuvent être fabriqués à partir d'un matériau tubulaire (4),
    - avec un dispositif de déroulement (2, 3, 5) à partir duquel le matériau (4), avec lequel sont formés les sacs (27), est amené sous forme de matériau tubulaire (4) au dispositif,
    - avec des moyens (37) pour la séparation d'un tronçon tubulaire du matériau tubulaire, qui sont déplaçables, pour la séparation, relativement au matériau tubulaire, et
    - avec des moyens (34, 35, 36) pour munir le matériau tubulaire (4) ou les sacs (27) de trous de préhension (43), qui sont déplaçables simultanément avec les moyens pour la séparation du tronçon tubulaire,
    - avec une station de remplissage dans laquelle le tronçon tubulaire peut être rempli, caractérisé en ce que les moyens (34, 35, 36) pour munir le matériau tubulaire (4) de trous de préhension sont disposés en amont de la station de remplissage, où au moins un porte-outil (32, 32') est prévu qui porte au moins les moyens (34, 35, 36) pour munir le matériau tubulaire (4) ou les sacs (27) de trous de préhension (43) et qui (32, 32') est déplaçable en direction du matériau tubulaire (4) et à nouveau au loin de celui-ci, où le porte-outil (32, 32') supporte de plus des moyens de soudage (33) pour produire des soudures transversales (42) et des moyens de coupe (37) pour individualiser le matériau tubulaire (4) en tronçons tubulaires (18).
  14. Dispositif (1) selon la revendication précédente, caractérisé en ce que les moyens (34, 35, 36) pour munir le matériau tubulaire (4) ou les sacs (27) de trous de préhension (43) présentent un couteau de contour (34).
  15. Dispositif selon la revendication précédente, caractérisé en ce que le contour du couteau de contour (34) représente une courbe ouverte.
EP05015305A 2004-08-04 2005-07-14 Procédé et dispositif pour la fabrication et le remplissage de sacs Active EP1623926B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05015305T PL1623926T3 (pl) 2004-08-04 2005-07-14 Urządzenie i sposób produkcji i napełniania worków

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004038006A DE102004038006A1 (de) 2004-08-04 2004-08-04 Vorrichtung und Verfahren zur Herstellung und Befüllung von Säcken

Publications (3)

Publication Number Publication Date
EP1623926A2 EP1623926A2 (fr) 2006-02-08
EP1623926A3 EP1623926A3 (fr) 2006-04-12
EP1623926B1 true EP1623926B1 (fr) 2010-12-08

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Family Applications (1)

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Country Status (6)

Country Link
US (1) US20060030470A1 (fr)
EP (1) EP1623926B1 (fr)
AT (1) ATE490921T1 (fr)
DE (2) DE102004038006A1 (fr)
ES (1) ES2357602T3 (fr)
PL (1) PL1623926T3 (fr)

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DE102010028394B4 (de) 2010-04-29 2019-05-23 Windmöller & Hölscher Kg Verfahren und eine Vorrichtung zur Herstellung und Befüllung von Verpackungsmitteln
DE102010049369A1 (de) * 2010-10-26 2012-04-26 Haver & Boecker Ohg Sack und Verfahren zum Füllen eines Sacks
DE102011015491B3 (de) * 2011-03-29 2012-06-06 Windmöller & Hölscher Kg Verfahren zum Querschweißen von Kunststoffschläuchen und Vorrichtung zum Formen und Schließen von Säcken
AT515776B1 (de) * 2014-07-01 2015-12-15 Constantia Flexibles Internat Gmbh Verfahren zum Herstellen einer mit einem Füllgut gefüllten Verpackung
IT201700107549A1 (it) * 2017-09-26 2019-03-26 Ica Spa confezioni in materiale flessibile
DE102018206356A1 (de) * 2018-02-19 2019-10-17 Windmöller & Hölscher Kg Fülleinrichtung und Verfahren zum Befüllen von Säcken mit jeweils einem unverschlossenen oberen Ende
US11603226B2 (en) * 2020-09-13 2023-03-14 Westrock Shared Services, Llc Pack to pouch systems

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US20060030470A1 (en) 2006-02-09
DE102004038006A1 (de) 2006-03-02
ES2357602T3 (es) 2011-04-28
ATE490921T1 (de) 2010-12-15
EP1623926A3 (fr) 2006-04-12
EP1623926A2 (fr) 2006-02-08
DE502005010643D1 (de) 2011-01-20
PL1623926T3 (pl) 2011-05-31

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