EP1773576B3 - Method and device for producing and filling sacks - Google Patents

Method and device for producing and filling sacks Download PDF

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Publication number
EP1773576B3
EP1773576B3 EP05762405A EP05762405A EP1773576B3 EP 1773576 B3 EP1773576 B3 EP 1773576B3 EP 05762405 A EP05762405 A EP 05762405A EP 05762405 A EP05762405 A EP 05762405A EP 1773576 B3 EP1773576 B3 EP 1773576B3
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EP
European Patent Office
Prior art keywords
sacks
tubular material
sack
forming device
filling
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.)
Not-in-force
Application number
EP05762405A
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German (de)
French (fr)
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EP1773576A1 (en
EP1773576B1 (en
Inventor
Uwe Köhn
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Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Priority to PL05762405T priority Critical patent/PL1773576T6/en
Publication of EP1773576A1 publication Critical patent/EP1773576A1/en
Application granted granted Critical
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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
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/02—Machines characterised by the incorporation of means for making the containers or receptacles
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/04—Forming flat bags from webs
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/46—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers
    • B65B43/465—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers for 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
    • 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
    • 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
    • B31B2150/0012—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing in the direction of movement
    • 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/003—Flexible containers made from sheets or blanks, e.g. from flattened tubes made from tubular sheets
    • 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
    • B31B2155/00—Flexible containers made from webs
    • 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
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/003—Flexible containers made from webs starting from tubular webs
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B31B2160/106—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents obtained from sheets cut from larger sheets or webs before finishing the bag forming operations
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/741—Moistening; Drying; Cooling; Heating; Sterilizing
    • 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
    • B31B70/008—Stiffening or reinforcing

Definitions

  • the invention relates to a method for producing and filling bags according to the preamble of claim 1 and an apparatus for producing and filling bags according to the preamble of claim 13.
  • FFS machines so-called "form, fill and salt” machines
  • FFS machines show the patent US 6,428,456 B1 , which starts in the manufacture of bags from a flexible, flat web, which is initially folded over a pulling shoulder, which is arranged at the upper end of a tube to an open tube. To form a permanent tube, the overlapping side regions of the web are to be welded together. Below the tube, the bottom of the later bag is formed in a further processing step by a cross-seam is applied. Then the bag is filled through the tube, sealed and separated from the subsequent tube. This type of production is used primarily for filling low product weights, as are typical of the food industry.
  • 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.
  • the formats required for bag formation are relatively small and can be produced relatively uneconomical. Blown film lines of larger format produce the same film at a lower cost per unit area.
  • pieces of hose are already made in this way, the length of which corresponds to the later bags.
  • the tube pieces formed are brought directly after their production on the later bag length and supplied in isolated form Sackönön- and Be Valll Roaden.
  • This type of formation of high-quality sacks is well known, for example in the pet food sector.
  • emphasis is placed on gusseted bags that have edge seams on each of their outer pleats.
  • These bags are said to provide greater stability, but in particular a better appearance.
  • these bags are made by first making a tube by longitudinal welding of flat film. This hose is singulated into pieces of hose and subjected to further longitudinal welds.
  • the object of the present invention is to propose an FFS method and an FFS device, according to which or with the cost-effective bags can be produced and filled, which have greater stability.
  • the sacks comprise at least four longitudinal seams
  • the tubular material in the sacking device is provided with longitudinal seams which extend over at least a large part of the sacks before the tubular material is singulated into pieces of hose and transported by the grippers to the filling device.
  • seams or longitudinal seams is to be understood in this context as a generic term for seams and all other seams, including the edge seams, in particular, the edge seams just do not have the task of holding together the joints of flat films as connecting seams.
  • the function of the edge seams consists in the illustrated stabilization of the bag, which supports in particular the expression of an approximately cuboid shape in its filled state and thus facilitates the stacking of such bags.
  • the formation of the longitudinal seams can take place before the transverse welds are formed.
  • the tubular material can be provided with diagonal welds, which at the later sacks form so-called corner welds, which further increase the stability of the sacks.
  • the sacks in the bag-forming device are also filled.
  • a piece of hose which is held by holding means for the purpose of forming longitudinal or transverse seams, 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 tubing or sacks takes place at least half in the horizontal direction, ie that with each movement of the pieces of hose or bags, the horizontal distance exceeds the vertical distance.
  • the tubular material can be provided with longitudinal seams during the stoppage phases of the intermittent transport.
  • longitudinal seams can also be applied during the transport of the tubular material, but in the first case, the longitudinal seams can be formed over different periods of time, although the periods are bounded above by the reciprocal clock speed, but otherwise variable. If the longitudinal seams are formed, for example, by welding, the welding duration can be selected, for example as a function of the material thickness.
  • 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 can 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 provide a total of known per se for the fact that the tubular film 4 is intermittently moved on their further transport cycle intermittently.
  • a station 28 for attaching longitudinal seams.
  • longitudinal seams are attached to the outer edges of the gussets of the tubular film, wherein the working length of the station 28 has at least the length of the later bags.
  • the longitudinal seams are usually produced by applying welds during the stoppage phases of the intermittent transport.
  • About further transport rollers 8 provided with longitudinal seams tubular film 4 is conveyed to a Eckabsch procedure 11 and a cooling station 12.
  • the tubular film 4 is pushed through the welding jaws 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 made above the cut edge on the tubular film in the transverse welding station 13 attached, which represents the bottom of the next working cycle of the device 1 to be formed piece of hose 18.
  • the bottom production can not only, although preferably, be carried out by a transverse weld, but there are also other joining methods, such as gluing, 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 hose piece to the top seam welding station 26, in which the hose piece 18 is closed with a head 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.
  • FIGS. 2 and 3 show cross sections through tubular materials 4, which were provided by the method according to the invention with longitudinal seams. That in the Fig. 2 shown material 4 is usually produced as a tubular film and wound up after the accident with gussets 30 to a winding 3. In the station 28 for attaching longitudinal seams, the tubular material 4 was provided at its outer edges 31 with edge seams 29. This in Fig. 3 shown tubular material 4 differs from that in Fig. 2 shown material 4 by a longitudinal seam 32, with which the two edge regions of a flat film for the purpose of forming a hose are interconnected. In general, the joining is done by welding, but in practice, other joining methods such as the sealing or the application of adhesives or Holtmelt be applied.

Abstract

A method and a device for producing and filling sacks with at least four longitudinal seams provide a more cost-effective approach to producing and filling sacks. The material that forms the sacks is supplied from an unwinding device in the form of a tubular material to a sack forming device. The tubular material is provided with longitudinal seams in the sack forming device, with the seams extending over a major part of the sacks.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung und Befüllung von Säcken nach dem Oberbegriff des Anspruchs 1 und eine Vorrichtung zur Herstellung und Befüllung von Säcken nach dem Oberbegriff des Anspruchs 13.The invention relates to a method for producing and filling bags according to the preamble of claim 1 and an apparatus for producing and filling bags according to the preamble of claim 13.

Säcke werden unter anderem von so genannten "Form, Fill and Salz"-Maschinen (im Folgenden FFS-Maschinen) hergestellt.Sacks are produced, among others, by so-called "form, fill and salt" machines (hereinafter FFS machines).

Eine Art an FFS-Maschinen zeigt die Patentschrift US 6,428,456 B1 , die bel der Herstellung von Beutel von einer flexiblen, flachen Bahn ausgeht, die über eine Ziehschulter, welche am oberen Ende eines Rohres angeordnet ist, zunächst zu einem offenen Schlauch zusammengelegt wird. Um einen dauerhaften Schlauch zu bilden, sind die überlappenden Seitenbereiche der Bahn miteinander zu verschweißen. Unterhalb des Rohres wird in einem weiteren Bearbeitungsschritt der Boden des späteren Beutels gebildet, indem eine Querverschlussnaht angebracht wird. Dann wird der Beutel durch das Rohr befüllt, verschlossen und vom nachfolgenden Schlauch abgetrennt. Diese Art der Herstellung wird vor allem zum Abfüllen von geringen Produktgewichten verwendet, wie sie typisch für die Nahrungsmittelindustrie sind.One type of FFS machines shows the patent US 6,428,456 B1 , Which starts in the manufacture of bags from a flexible, flat web, which is initially folded over a pulling shoulder, which is arranged at the upper end of a tube to an open tube. To form a permanent tube, the overlapping side regions of the web are to be welded together. Below the tube, the bottom of the later bag is formed in a further processing step by a cross-seam is applied. Then the bag is filled through the tube, sealed and separated from the subsequent tube. This type of production is used primarily for filling low product weights, as are typical of the food industry.

Die Maschinen, mit der sich die vorliegend Erfindung beschäftigt und welche unter anderem in den Druckschriften DE 199 33 486 , EP 534 062 , DE 44 23 964 , DE 199 20 478 A1 und DE 199 36 660 A1 gezeigt sind, verfügen über Abwicklungsvorrichtungen, auf denen bereits vorgefertigte Schläuche gespeichert sind. Von diesen Abwicklungsvorrichtungen wird der Schlauch abgewickelt und zu Schlauchstücken vereinzelt. In weiteren Arbeitsgängen werden in der Regel Schlauchböden gebildet, Füllgut in den entstandenen Sack gefüllt sowie der Sack verschlossen. Die Art der Sackbildung und Befüllung, die in den genannten Druckschriften gezeigt wird, ist Teil des Offenbarungsgehalts dieser Druckschrift. Dasselbe gilt für die in diesen Druckschriften vorgenommenen Bestimmungen des Begriffs der "Form, Fill and Seal"-Maschinen (FFS) sowie für den Transport der Folienschläuche, Folienabschnitte und Säcke in diesen Maschinen. In der Regel wird mit diesen Maschinen Schüttgut abgefüllt.The machines with which the present invention is concerned and which inter alia in the publications DE 199 33 486 . EP 534,062 . DE 44 23 964 . DE 199 20 478 A1 and DE 199 36 660 A1 have unwinding devices on which already pre-fabricated hoses are stored. From these unwinding devices, the hose is unwound and singulated into pieces of tubing. In further operations As a rule, tube bottoms are formed, contents are filled into the resulting bag, and the bag is closed. The type of bag formation and filling, which is shown in the cited documents, is part of the disclosure of this document. The same applies to the provisions of the term "form, fill and seal" (FFS) machines given in these documents and to the transport of film hoses, film sections and sacks in these machines. As a rule bulk goods are filled with these machines.

In der Regel werden zur Verarbeitung an den FFS-Maschinen durch Blasfolienextrursion Folienschläuche gebildet, deren Format (hier deren Umfang) mit dem des gebildeten Sackes übereinstimmt. Diese Vorgehensweise führt jedoch dazu, dass schon an den Extrusionsanlagen relativ häufig teure Formatwechsel vorgenommen werden müssen, um unterschiedliche Sackformate realisieren zu können. Darüber hinaus sind die zur Sackbildung benötigten Formate relativ klein und lassen sich relativ unwirtschaftlich erzeugen. Blasfolienanlagen größeren Formats erzeugen gleiche Folie zu geringeren Kosten pro Flächeneinheit.As a rule, 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. However, 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. In addition, the formats required for bag formation are relatively small and can be produced relatively uneconomical. Blown film lines of larger format produce the same film at a lower cost per unit area.

Daher ist des Öfteren versucht worden, zunächst sehr breite Folienbahnen durch Flachfolienextrusion oder durch Blasfolienextrusion an Anlagen großen Formats herzustellen, wobei in der Regel, ebenfalls in erster Linie aus Kostengründen, Blasfolienextrusionsanlagen bevorzugt wurden. Die entstandenen Folienschläuche oder Folienbahnen großen Formats wurden dann durch formatgerechtes Schneiden zu Flachfolienbahnen weiter verarbeitet.Therefore, it has often been attempted to first produce very wide film webs by flat film extrusion or by blown film extrusion on large-format equipment, wherein usually, also primarily for cost reasons, blown film extrusion plants were preferred. The resulting film tubes or film webs of large format were then further processed by flat format cutting to flat film webs.

Daraufhin wurde eine dieser flachgelegten Folienbahnen zu einem Schlauch zusammengelegt und durch eine Längsschweißnaht zu einem Schlauch verbunden. Der Einsatz der dargestellten Maschinen beschränkt sich jedoch in erster Linie auf industrielle Anwendungen, wie die Absackung von Farbstoffen, Kunstatoffgranulat, Düngemittel und andere Massengüter.Then one of these flattened film webs was folded into a tube and connected by a longitudinal weld to a hose. However, the use of the illustrated machines is primarily limited to industrial applications such as bagging of dyes, plastic granules, fertilizers and other bulk materials.

Konsumgüter, die über den Einzelhandel vertrieben werden, werden in aller Regel in höherwertigen Säcken transportiert und vertrieben. So ist es zum Beispiel bekannt, Seitenfaltenbeutel oder -säcke aus Schlauchstücken herzustellen, welche aus mehreren Folienabschnitten gebildet sind. In der Regel werden zu diesem Zweck die Ränder der jeweiligen Folienabschnitte miteinander verschweißt. Dieser Vorgang wird zwischen Schweißbacken vorgenommen, die das zu verschweißende Material während des Schweißvorgangs arretieren.Consumer goods sold through retailers are usually transported and sold in higher-quality bags. That's the way it is Example, known to produce gusseted bags or sacks of pieces of hose, which are formed from a plurality of film sections. As a rule, the edges of the respective film sections are welded together for this purpose. This process is done between welding jaws that lock the material to be welded during the welding process.

In der Regel werden auf diese Weise bereits Schlauchstücke hergestellt, deren Länge der der späteren Säcke entspricht. In anderen Fällen werden die gebildeten Schlauchstücke direkt nach ihrer Herstellung auf die spätere Sacklänge gebracht und in vereinzelter Form Sackbildungs- und Befülleinrichtungen zugeführt. Diese Art der Bildung hochwertiger Säcke ist zum Beispiel im Petfood-Bereich wohlbekannt. Hier wird auf Seitenfaltensäcke Wert gelegt, die an Jeder Ihrer Außenfalten über Kantennähte verfügen. Diesen Säcken wird eine größere Stabilität, insbesondere aber ein besseres Aussehen nachgesagt. In der Regel werden diese Säcke hergestellt, indem zunächst ein Schlauch durch eine Längsschweißung von Flachfolie hergestellt wird. Dieser Schlauch wird zu Schlauchstücken vereinzelt und mit weiteren Längsschweißnähten beaufschlagt.In general, pieces of hose are already made in this way, the length of which corresponds to the later bags. In other cases, the tube pieces formed are brought directly after their production on the later bag length and supplied in isolated form Sackbildung- and Befülleinrichtungen. This type of formation of high-quality sacks is well known, for example in the pet food sector. Here, emphasis is placed on gusseted bags that have edge seams on each of their outer pleats. These bags are said to provide greater stability, but in particular a better appearance. Typically, these bags are made by first making a tube by longitudinal welding of flat film. This hose is singulated into pieces of hose and subjected to further longitudinal welds.

Allerdings ist sowohl der Transport vereinzelter Schlauchstücke als auch das spätere Einbringen derselben in einen Sackbildungs- und Befüllungsprozess aufwändlg. Dieses erfolgt in der Regel mit Rotationsanlegern oder anderen Saugvorrichtungen, welche die Schlauchstücke einzeln greifen und der Sackbildungsvorrichtung zuführen. Solche Vorrichtungen sind teuer und störungsanfällig .However, both the transport of individual pieces of tubing and the subsequent introduction of the same into a bag-forming and filling process are complicated. This is usually done with Rotationsanlegern or other suction devices which grip the pieces of tubing individually and feed the bag forming device. Such devices are expensive and prone to failure.

Daher besteht die Aufgabe der vorliegenden Erfindung darin, ein FFS-Verfahren und eine FFS-Vorrichtung vorzuschlagen, nach dem beziehungsweise mit der kostengünstige Säcke herstellbar und befüllbar sind, die eine größere Stabilität aufweisen.Therefore, the object of the present invention is to propose an FFS method and an FFS device, according to which or with the cost-effective bags can be produced and filled, which have greater stability.

Diese Aufgabe wird dadurch gelöst,
dass die Säcke zumindest vier Längsnähte umfassen, das schlauchförmige Material in der Sackbildungsvorrichtung mit Längsnähten versehen wird, die sich zumindest über einen großen Teil der Säcke erstrecken, bevor das schlauchförmige Material zu Schlauchstücken vereinzelt und durch die Greifer zur Füllvorrichtung transportiert werden..This task is solved by
in that the sacks comprise at least four longitudinal seams, the tubular material in the sacking device is provided with longitudinal seams which extend over at least a large part of the sacks before the tubular material is singulated into pieces of hose and transported by the grippers to the filling device.

Der Begriff Nähte oder Längsnähte ist in diesem Zusammenhang als Oberbegriff für Verbindungsnähte und alle weiteren Nähte, wozu auch die Kantennähte zählen, zu verstehen, wobei insbesondere die Kantennähte eben nicht die Aufgabe haben, die Stoßstellen von Flachfolien zusammenzuhalten wie Verbindungsnähte. Die Funktion der Kantennähte besteht in der dargestellten Stabilisierung des Sackes, die insbesondere die Ausprägung einer annähernd quaderartigen Form in seinem befüllten Zustand unterstützt und damit das Stapeln solcher Säcke erleichtert.The term seams or longitudinal seams is to be understood in this context as a generic term for seams and all other seams, including the edge seams, in particular, the edge seams just do not have the task of holding together the joints of flat films as connecting seams. The function of the edge seams consists in the illustrated stabilization of the bag, which supports in particular the expression of an approximately cuboid shape in its filled state and thus facilitates the stacking of such bags.

Um nun das schlauchförmige Material zu Säcken zu verarbeiten, ist es vorteilhaft, zunächst Sackböden durch Querschweißungen zu bilden. Querschweißungen lassen sich besonders einfach am noch schlauchförmigen Material bilden, da dieses Material noch an verschiedenen Stellen von Greifern oder Zangen oder ähnlichen Haltemitteln ergriffen werden kann.In order to process the tubular material into sacks, it is advantageous to first form sack bottoms by transverse welding. Cross welds are particularly easy to form the still tubular material, since this material can still be taken at different locations of grippers or pliers or similar holding means.

Aus gleichem Grund bietet es sich an, erfindungsgemäß die Längsnähte zu bilden, bevor das Material zu Schlauchstücken vereinzelt wird. Dabei kann das Bilden der Längsnähte noch vor dem Bilden der Querschweißnähte erfolgen. Zudem kann das schlauchförmige Material vor oder nach dem Bilden der Längsnähte mit Diagonalabschweißungen versehen werden, welche an den späteren Säcken so genannte Eckabschweißungen bilden, die die Stabilität der Säcke weiter erhöhen.For the same reason it makes sense to inventively form the longitudinal seams before the material is separated into pieces of tubing. In this case, the formation of the longitudinal seams can take place before the transverse welds are formed. In addition, before or after forming the longitudinal seams, the tubular material can be provided with diagonal welds, which at the later sacks form so-called corner welds, which further increase the stability of the sacks.

In einer vorteilhaften Weiterbildung der Erfindung ist vorgesehen, dass die Säcke in der Sackbildungsvorrichtung auch befüllt werden. Ein Schlauchstück, welches zum Zwecke der Bildung von Längs- oder Quernähten durch Haltemittel gehalten wird, kann von diesen oder weiteren Haltemitteln einer Füllvorrichtung zugeführt werden. Das zeitintensive Ablegen, Speichern und Wiederaufnehmen der Schlauchstücke entfällt damit. Den Transport durch die Sackbildungsvorrichtung übernehmen dabei vorteilhafterweise als Greifer ausgeführte Haltemittel. Die Greifer können jeweils paarweise vorhanden sein, wobei sie die Schlauchstücke seitlich im Bereich des oberen Randes umgreifen. Dabei kann es nötig sein, das Schlauchstück von einem Greiferpaar zu einem anderen Greiferpaar zu übergeben. Zu diesem Zweck sind Transferpositionen vorgesehen, an denen kurzzeitig beide Greiferpaare das Schlauchstück halten. Der Transport der Schlauchstücke oder der Säcke erfolgt dabei zumindest zur Hälfte in horizontaler Richtung, d. h. dass bei Jeder Bewegung der Schlauchstücke oder der Säcke die horizontale Strecke die vertikale Strecke übertrifft.In an advantageous development of the invention, it is provided that the sacks in the bag-forming device are also filled. A piece of hose, which is held by holding means for the purpose of forming longitudinal or transverse seams, 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 tubing or sacks takes place at least half in the horizontal direction, ie that with each movement of the pieces of hose or bags, the horizontal distance exceeds the vertical distance.

In der Sackbildungsvorrichtung kann das schlauchförmige Material während der Stillstandsphasen des intermittierenden Transportes mit Längsnähten versehen werden. Grundsätzlich können Längsnähte auch während des Transportes des schlauchförmigen Materials angebracht werden, jedoch können in erstem Fall die Längsnähte über verschiedene Zeiträume gebildet werden, wobei die Zeiträume zwar nach oben durch die reziproke Taktgeschwindigkeit begrenzt, aber ansonsten variabel sind. Werden die Längsnähte beispielsweise durch Schweißungen gebildet, kann die Schweißdauer, etwa in Abhängigkeit von der Materialstärke, gewählt werden.In the bag-forming device, the tubular material can be provided with longitudinal seams during the stoppage phases of the intermittent transport. In principle, longitudinal seams can also be applied during the transport of the tubular material, but in the first case, the longitudinal seams can be formed over different periods of time, although the periods are bounded above by the reciprocal clock speed, but otherwise variable. If the longitudinal seams are formed, for example, by welding, the welding duration can be selected, for example as a function of the material thickness.

Weitere Ausführungsbeispiele der Erfindung gehen aus der gegenständlichen Beschreibung und den Ansprüchen hervor. Die der gegenständlichen Beschreibung zugrunde liegenden Figuren zeigen:

Fig. 1.:
eine Vorrichtung zum Herstellen und Befüllen von Säcken, mit der sich das erfindungsgemäße Verfahren durchführen lässt.
Fig. 2.:
einen Querschnitt eines schlauchförmigen Materials, das mit Längsnähten nach dem erfindungsgemäßen Verfahren versehen wurde.
Fig. 3.:
einen Querschnitt eines weiteren schlauchförmigen Materials, das mit Längsnähten nach dem erfindungsge- mäßen Verfahren versehen wurde.
Further embodiments of the invention will become apparent from the description and the claims. The figures underlying the subject description show:
Fig. 1 .:
a device for producing and filling bags, with which the inventive method can be carried out.
Fig. 2 .:
a cross section of a tubular material which has been provided with longitudinal seams according to the inventive method.
Fig. 3 .:
a cross section of a further tubular material which has been provided with longitudinal seams according to the inventive method.

Diese Vorrichtung 1 umfasst einen Tragarm 2, auf welchem ein Wickel 3 mit schlauchförmiger Folie 4 aufliegt. Die schlauchförmige Folie 4 weist nicht dargestellte Seitenfalten auf. Die Transportwalzen 5, die zum Teil auch angetrieben sein können, sorgen für eine, in der Regel kontinuierliche, Abwicklung der schlauchförmigen Folie 4. Der durch eine Kolben-Zylinder-Einheit 10 mit einer Last beaufschlagte Hebel 9, welcher eine Umlenkwalze 6 trägt und insgesamt häufig als Tänzereinrichtung bezeichnet wird, und die Transportwalze 7, 8 und das Vorschubrollenpaar 15 sorgen insgesamt auf an sich bekannte Weise dafür, dass die schlauchförmige Folie 4 auf ihrem weiteren Transportweg taktweise intermittierend weiterbewegt wird. Im weiteren Verlauf durchläuft die schlauchförmige Folie 4 eine Station 28 zum Anbringen von Längsnähten. Auf nicht näherdargestellte Weise werden an den Außenkanten der Seitenfalten derschlauchförmigen Folie 4 Längsnähte angebracht, wobei die Arbeitslänge der Station 28 zumindest die Länge der späteren Säcke aufweist. Die Längsnähte werden in der Regel durch Anbringen von Schweißungen während der Stillstandsphasen des intermittierenden Transports erzeugt. Über weitere Transportwalzen 8 wird die mit Längsnähten versehene schlauchförmige Folie 4 zu einer Eckabschweißstation 11 und einer Kühlstation 12 gefördert.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 can 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 provide a total of known per se for the fact that the tubular film 4 is intermittently moved on their further transport cycle intermittently. In the course of the tubular film 4 passes through a station 28 for attaching longitudinal seams. In non-illustrated manner, 4 longitudinal seams are attached to the outer edges of the gussets of the tubular film, wherein the working length of the station 28 has at least the length of the later bags. The longitudinal seams are usually produced by applying welds during the stoppage phases of the intermittent transport. About further transport rollers 8 provided with longitudinal seams tubular film 4 is conveyed to a Eckabschweißstation 11 and a cooling station 12.

Mit dem Vorschubrollenpaar 15 wird die schlauchförmige Folie 4 durch die Schweißbacken einer Querschweißstation 13 und durch eine Querschneidestation 16 hindurch geschoben. Die Werkzeuge der Querschweißstation 13 und der Querschneidestation 16 können auf nicht näher beschriebene Weise, beispielsweise durch eine Parallelogrammanordnung 14, in Ebenen orthogonal zur Vorschubrichtung der schlauchförmigen Folie 4 auf diese zu und von dieser weg bewegt werden. Nachdem die Greifer 17 die schlauchförmige Folie 4 ergriffen haben, wird oberhalb der Greifer 17 ein Schlauchstück 18 in der Querschneidestation 16 von der schlauchförmigen Folie 4 abgetrennt. Zeitgleich wird oberhalb der Schnittkante an derschlauchförmigen Folie in derQuerschweißstation 13 eine Querschweißung angebracht, welche den Boden des im nächsten Arbeitstakt der Vorrichtung 1 zu bildenden Schlauchstücks 18 darstellt. Die Bodenherstellung kann jedoch nicht nur, auch wenn vorzugsweise, durch eine Querschweißung erfolgen, sondern es sind auch weitere Fügeverfahren, etwa das Kleben, denkbar.With the feed roller pair 15, the tubular film 4 is pushed through the welding jaws 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. After the grippers 17 have gripped the tubular film 4, a piece of tubing 18 is separated from the tubular film 4 above the gripper 17 in the cross-cutting station 16. At the same time, a transverse weld is made above the cut edge on the tubular film in the transverse welding station 13 attached, which represents the bottom of the next working cycle of the device 1 to be formed piece of hose 18. However, the bottom production can not only, although preferably, be carried out by a transverse weld, but there are also other joining methods, such as gluing, conceivable.

Die Greifer 17 befördern das Schlauchstück 18 zu einem Übergabepunkt, an dem weitere Greifer 19 das Schlauchstück 18 erfassen und zu einer Füllstation 20 transportieren. Dort wird das Schlauchstück 18 an stationäre Greifer 21 übergeben und von den Saugern 22 geöffnet, so dass das Füllgut, welches durch den Füllstutzen 23 geleitet wird, in das Schlauchstück 18 gelangen kann. Das Schlauchstück liegt dabei mit seinem unteren Ende auf einem Transportband 24 auf, so dass das Schlauchstück 18 während des Befüllvorganges nicht übermäßig entlang seiner Längskanten belastet wird. Weitere Greifer 25 befördern das befüllte Schlauchstück zur Kopfnahtschweißstation 26, in der das Schlauchstück 18 mit einer Kopfschweißnaht verschlossen wird und so einen fertigen Sack 27 bildet. Auch das Verschließen des Schlauchstücks 18 in seinem Kopfbereich kann durch ein anderes Fügeverfahren erfolgen. Der fertige Sack wird von dem Transportband 24 aus der Vorrichtung 1 heraus geführt.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 hose piece to the top seam welding station 26, in which the hose piece 18 is closed with a head 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.

Die Figuren 2 und 3 zeigen Querschnitte durch schlauchförmige Materialien 4, die nach dem erfindungsgemäßen Verfahren mit Längsnähten versehen wurden. Das in der Fig. 2 gezeigte Material 4 wird in der Regel als Schlauchfolie produziert und nach dem Versehen mit Seitenfalten 30 zu einem Wickel 3 aufgewickelt. In der Station 28 zum Anbringen von Längsnähten wurde das schlauchförmige Material 4 an seinen Außenkanten 31 mit Kantennähten 29 versehen. Das in Fig. 3 gezeigte schlauchförmige Material 4 unterscheidet sich von dem in Fig. 2 gezeigten Material 4 durch eine Längsnaht 32, mit welcher die beiden Randbereiche einer Flachfolie zwecks Bildung eines Schlauches miteinander verbunden werden. In der Regel erfolgt das Verbinden durch Verschweißen, jedoch werden in der Praxis auch andere Fügeverfahren wie das Siegeln oder das Aufbringen von Klebstoffen oder Holtmelt angewandt. Nach der derartigen Bildung eines schlauchförmigen Materials 4, das ebenfalls mit Seitenfalten 30 versehen werden kann, wird das schlauchförmige Material 4 zu einem Wickel aufgewickelt. Bezugszeichenliste 1 Vorrichtung zum Herstellen und Befüllen von Säcken 2 Tragarm 3 Wickel 4 Folie 5 Transportwalze 6 Umlenkwalze 7 Transportwalze 8 Transportwalze 9 Hebel 10 Kolben-Zylinder-Einheit 11 Eckabschweißstation 12 Kühlstation 13 Querschweißstation 14 Parallelogrammanordnung 15 Vorschubrollenpaar 16 Querschneidestation 17 Greifer 18 Schlauchstück 19 Greifer 20 Füllstation 21 Stationärer Greifer 22 Sauger 23 Füllstutzen 24 Transportband 25 Greifer 26 Kopfnahtschweißstation 27 Sack 28 Station zum Anbringen von Längsnähten 29 Kantennähte 30 Seitenfalten 31 Außenkanten 32 Längsnaht The FIGS. 2 and 3 show cross sections through tubular materials 4, which were provided by the method according to the invention with longitudinal seams. That in the Fig. 2 shown material 4 is usually produced as a tubular film and wound up after the accident with gussets 30 to a winding 3. In the station 28 for attaching longitudinal seams, the tubular material 4 was provided at its outer edges 31 with edge seams 29. This in Fig. 3 shown tubular material 4 differs from that in Fig. 2 shown material 4 by a longitudinal seam 32, with which the two edge regions of a flat film for the purpose of forming a hose are interconnected. In general, the joining is done by welding, but in practice, other joining methods such as the sealing or the application of adhesives or Holtmelt be applied. After such formation of a tubular material 4, which can also be provided with gussets 30, the tubular material 4 is wound into a winding. LIST OF REFERENCE NUMBERS 1 Device for producing and filling bags 2 Beam 3 reel 4 foil 5 transport roller 6 deflecting 7 transport roller 8th transport roller 9 lever 10 Piston-cylinder unit 11 Eckabschweißstation 12 cooling station 13 Cross welding station 14 parallelogram 15 Feed roller pair 16 Cross-cutting station 17 grab 18 hose Connector 19 grab 20 filling station 21 Stationary gripper 22 sucker 23 filling 24 conveyor belt 25 grab 26 Head seam welding station 27 bag 28 Station for attaching longitudinal seams 29 edge seams 30 gusseted 31 outer edges 32 longitudinal seam

Claims (14)

  1. Method for producing and filling sacks (27) whereby
    - the material that forms the sacks is supplied in the form of tubular material (4) from an unwinding device (2, 3, 5) to a sack-forming device (1),
    - the tubular material is separated to pipe pieces (18) in the sack-forming device and
    - the pipe pieces (18) or the sacks (27) are transported by grippers (17, 19, 25) during at least a part of their way in the sack-forming device (1),
    characterized in
    - that the sacks (27) comprise at least four longitudinal seams (29),
    - that the tubular material (4) is fitted with longitudinal seams (29) in the sack-forming device (1) which extend to a large part of the sacks (27) before the tubular material (4) is separated to pipe pieces and transported to the filling device by the grippers.
  2. Method according to claim 1,
    characterized in that
    the sack-forming device (1) carries out the formation of the sacks by forming sack bottoms in the tubular material (4) by cross-welds.
  3. Method according to one of the preceding claims,
    characterized in that
    the sack-forming device (1) also carries out the filling of the sacks (27) by filling the sacks (27) with filling material.
  4. Method according to one of the preceding claims,
    characterized in that
    the grippers (17, 19, 25) engage around the tube pieces (18) or the sacks (27) in the region of their outer edges (31), whereat the tube piece (18) or the sack (27) hangs down.
  5. Method according to one of the preceding claims,
    characterized in that
    the tube pieces (18) or the sacks (27) are transported horizontally at least for one half of their way.
  6. Method according to one of the preceding claims,
    characterized in that
    the tubular material (4) in the sack-forming device (1) is provided with longitudinal seams (29) during the stop phases of the intermittent transport.
  7. Method according to one of the preceding claims,
    characterized in that
    the longitudinal seams (29) are cooled before the sack (27) is filled.
  8. Method according to one of the preceding claims,
    characterized in that
    even before the application of longitudinal seams (29) in the sack-forming device (1) takes place, the tubular material (4) has at least one longitudinal weld (32), by means of which at least one flat film web is joined to form tubular material.
  9. Method according to one of the preceding claims,
    characterized in
    - that the tubular material (4) is a side-gusseted tube, and
    - that the weld seams are applied on the outer folds of the side-gusseted tube.
  10. Method according to one of the preceding claims,
    characterized in that
    the tubular material (4) is provided with diagonal welds, before it (4) is provided with longitudinal seams (29).
  11. Method (1) for producing and filling sacks (27),
    - with an unwinding station (2, 3, 5), from which the material (4) that forms the sacks is supplied in the form of tubular material (4) to a sack-forming device (1), and
    - with a cross-cutting station in which the tubular material (4) is separated to pipe pieces, and
    - with grippers by means of which the sacks or pipe pieces are transportable during at least a part of their way in the sack-forming device, characterized in
    - that the sacks comprise at least four longitudinal seams
    - that a longitudinal welding device (28) is provided by means of which the tubular material (4) is provided with longitudinal seams in the sack-forming device (1) which extend over at least a large part of the sacks (27),
    - that the tubular material (4) is separated to pipe pieces (18) by means of the cross-cutting station after the tubular material has passed the longitudinal welding device (28), and
    - that after their separation, the pipe pieces (18) are transported to the filling device by means of the grippers.
  12. Device (1) according to the preceding claim,
    characterized by
    a dancer device (6, 9, 10) between the unwinding device (2, 3, 5) and the longitudinal welding device (28).
  13. Device (1) according to one of the both preceding claims,
    characterized by
    a cooling device (12) for the longitudinal seams, which has a length of at least 30 cm in the transport direction of the tubular material (4).
  14. Device (1) according to one of the three preceding claims,
    characterized by
    a cooling device (12) for the longitudinal seams, which has a length of at least 45 cm in the transport direction of the tubular material (4).
EP05762405A 2004-07-16 2005-06-30 Method and device for producing and filling sacks Not-in-force EP1773576B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (2)

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DE102004034489A DE102004034489A1 (en) 2004-07-16 2004-07-16 Method and device for producing and filling bags
PCT/EP2005/007157 WO2006007960A1 (en) 2004-07-16 2005-06-30 Method and device for producing and filling sacks

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EP1773576A1 EP1773576A1 (en) 2007-04-18
EP1773576B1 EP1773576B1 (en) 2009-09-02
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EP (1) EP1773576B3 (en)
JP (2) JP2008513299A (en)
AT (1) ATE441517T1 (en)
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ES (1) ES2333136T7 (en)
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EP1084068B1 (en) * 1998-06-09 2002-10-02 Lance John Muller Liner bag for flexible bulk container
DE19936660C2 (en) 1999-05-04 2002-10-24 Windmoeller & Hoelscher Device for manufacturing, filling and closing bags
DE19920478C2 (en) 1999-05-04 2001-05-03 Windmoeller & Hoelscher Device for producing and preferably also for filling and closing bags made of thermoplastic material
DE19933486C2 (en) 1999-05-04 2001-06-13 Windmoeller & Hoelscher Device for filling and closing bags
DE19964295C2 (en) 1999-05-04 2002-12-19 Windmoeller & Hoelscher Machine for producing, filling and closing plastic sacks has four pairs of tongs, filler unit, welding and cutting units
JP4079634B2 (en) * 2001-12-06 2008-04-23 大日本印刷株式会社 Bag making method and bag filling method
JP4060077B2 (en) * 2001-12-28 2008-03-12 株式会社彫刻プラスト Manufacturing method of flat bag with pleats
JP2003335347A (en) * 2002-05-15 2003-11-25 Koji Onuma Self-standing flat bag and its production method
US20040013325A1 (en) * 2002-07-22 2004-01-22 Gavin Cook Bag for flowable materials
DE102004038006A1 (en) * 2004-08-04 2006-03-02 Windmöller & Hölscher Kg Apparatus and method for producing and filling bags

Also Published As

Publication number Publication date
JP2012062119A (en) 2012-03-29
ES2333136T3 (en) 2010-02-17
PL1773576T3 (en) 2010-02-26
EP1773576A1 (en) 2007-04-18
US20070289262A1 (en) 2007-12-20
US7770362B2 (en) 2010-08-10
WO2006007960A1 (en) 2006-01-26
DE102004034489A1 (en) 2006-04-20
DE502005008062D1 (en) 2009-10-15
PL1773576T6 (en) 2012-10-31
JP2008513299A (en) 2008-05-01
EP1773576B1 (en) 2009-09-02
ES2333136T7 (en) 2012-11-19
ATE441517T1 (en) 2009-09-15

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