EP1464578B1 - Machine for making tubular bags - Google Patents

Machine for making tubular bags Download PDF

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Publication number
EP1464578B1
EP1464578B1 EP04014687A EP04014687A EP1464578B1 EP 1464578 B1 EP1464578 B1 EP 1464578B1 EP 04014687 A EP04014687 A EP 04014687A EP 04014687 A EP04014687 A EP 04014687A EP 1464578 B1 EP1464578 B1 EP 1464578B1
Authority
EP
European Patent Office
Prior art keywords
film
welding device
filling
edge
bag
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.)
Revoked
Application number
EP04014687A
Other languages
German (de)
French (fr)
Other versions
EP1464578A1 (en
Inventor
Gerhard Kuss
René Ohrisch
Harald Braun
Walter Dr. Baur
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.)
Rovema Verpackungsmaschinen GmbH and Co KG
Rovema GmbH
Original Assignee
Rovema Verpackungsmaschinen GmbH and Co KG
Rovema GmbH
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Filing date
Publication date
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Application filed by Rovema Verpackungsmaschinen GmbH and Co KG, Rovema GmbH filed Critical Rovema Verpackungsmaschinen GmbH and Co KG
Publication of EP1464578A1 publication Critical patent/EP1464578A1/en
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Publication of EP1464578B1 publication Critical patent/EP1464578B1/en
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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
    • B65B9/20—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
    • B65B9/2014—Tube advancing means
    • B65B9/2021—Tube advancing means combined with longitudinal welding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2014—Tube advancing means
    • B65B9/2028—Rollers or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2042—Means for altering the cross-section of the tube filling opening prior to transversal sealing, e.g. tube spreading devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/213—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web having intermittent motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B65B9/22—Forming shoulders; Tube formers
    • 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
    • B65B2220/10—Creating an off-center longitudinal seal on horizontal or vertical form fill seal [FFS] machines
    • 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
    • B65B2220/12—Creating additional longitudinal welds on horizontal or vertical form fill seal [FFS] machines for stiffening packages or for creating package edges
    • 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
    • B65B9/2056—Machines for packages of special type or form

Definitions

  • the invention relates to a tubular bag machine with a film web, a Supply roll, deflection rollers for feeding the flat film web to a forming shoulder, a film take-off for transporting the film web, a filling tube for receiving the a film tube formed film web, baking a transverse welding device for the production of transverse seams, a separating device for the transection of the Foil tube, and connected to the filling tube, pointing away from the filling tube, flat spreading elements, wherein in the direction of transporting the spreading elements arranged downstream one edge welding device per spreading element, directed against the deflected by a spreader hose edge is.
  • Such a known tubular bag machine is used to produce Tubular bags whose four edges are welded. These tubular bags have one relatively good stability.
  • a bag with only four longitudinal welds has none Bag printing impairing longitudinal seam on.
  • the bag printing there interrupting longitudinal seam is a conventional, symmetrical form shoulder used.
  • the known tubular bag machines do not offer the possibility to bag with good too handle opening assistance or reclosing so that they Help uses the special shape of the bag welded along its four edges.
  • the invention is based on the object, this disadvantage in a Tubular bag machine according to the preamble of claim 1 to eliminate.
  • the object is achieved according to the characterizing part of claim 1. It is a separate longitudinal welding device for welding the hose edge provided adjacent area. Through the use of asymmetric Form shoulder is the otherwise centerline extending longitudinal seam in the area placed one edge of the bag, so that a separate, centrally extending longitudinal seam no longer occurs.
  • the longitudinal welding device is opposite to its adjacent Edge welding device offset to the film edges.
  • the invention has the advantage that due to the two at a hose edge provided welding devices, namely an edge welding device and the separate longitudinal welding device, two longitudinal seams directly next to each other in the area the hose edge at which the film tube is longitudinally sealed generates become.
  • a seam can be considered relatively tear-proof and non-reclosable seam may be provided, and the other seam may be as light openable or resealable seam.
  • a seam due to their edge sealing primarily the purpose of bag stabilization and the other seam provides a secure bag closure. Then z.
  • the edges Welding seam generally has lower strength than the bag welding longitudinal seam.
  • the seam to be opened first is a seam which can be easily opened, and subsequent seam fulfills the function of edge stabilization.
  • the first seam to be opened may have a resealing aid.
  • the longitudinal welding device Since the longitudinal welding device with respect to the adjacent edge welding device offset to the film edge, the longitudinal welding device causes the Closure of the film tube at the point where the two film edges meet. These edges are followed by an edge area. These Arrangement allows the production of welded at four edges in a simple manner Bags with a longitudinal seam bounded by an edge. The edge can also be without Be formed pouch occlusive property.
  • the proposed tubular bag machine is used to produce bags whose Foil edge in the form of an overlap seam on the bag (film tube) is applied.
  • the Concern can be provided by means of a corresponding weld.
  • a bag opening aid or a reclosure aid is attached, and this aid to enema in the Longitudinal seam and / or the edges to be welded is provided, so may selected seam can be equipped with an appropriate help.
  • Adhesive tape to secure closure in conjunction with a Reclosability, as well as a zip-reclosable strip to in particular to be able to use a repeated resealing.
  • the tubular bag machine can be operated continuously or clocked. Accordingly, the operation of the film take-off takes place.
  • Gussets are used to create gussets in the film tube.
  • One Pair of mutually movable gusset generators are used to make two to pierce opposite gussets in the film tube.
  • one pair in gussets Folientransport direction before and a pair provided after the cross-welding device is (claim 5), tubular bag with two opposite transverse seams welded. These bags are very dimensionally stable. They become head-sided and bottom-sided welded by cross seams. The gussets are in the cross seams shrink wrapped.
  • the bag is symmetrical with respect to its gusset arrangement and can be relatively round can be shaped to give a can-like appearance in edged form have and serve in the most advantageous manner (material savings) as can substitute.
  • a preforming of the edges can be done in a technically simplest way and independently of the mode of the tubular bag machine, if according to claim 8 in Area of the forming shoulder two film restraints are provided, each between two Folienspreizem are arranged to the film tube for a Preforming edge welding. These foil spreaders are for a safe Preforming attached to the filling tube (claim 9).
  • a vertical tubular bag machine 1 In a vertical tubular bag machine 1 is a flat film web 2 of a Supply roll 3 unwound and a deflection roller 4 an asymmetric Form shoulder 5 fed ( Figure 1).
  • the collar breast parts 34, 35 of the form shoulder 5 are different lengths.
  • a film take-off 6 serves for the further transport of the film web 2.
  • a filling tube 7 receives the film web 2 formed into a film tube 8.
  • a transverse welding device 10 serve the Production of transverse seams 11 on the film tube 8.
  • a separator 12 In one of the jaws 9 is located a separator 12 for the separation of the film tube 8 between two transverse seams 11.
  • the forming shoulder 7 puts the superimposed film edges 17 to the right the side of the film tube 8.
  • a separate longitudinal welding device 18 is for a welding of the hose rim 16 adjacent area provided to create two directly adjacent welds.
  • the longitudinal welding device 18 produces a longitudinal seam 20, whereas each edge welding device 15 produces a welded edge 21 on the film tube 8.
  • the longitudinal welding device 18 is opposite to the adjacent edge welding device 15 to the film edge 17th offset.
  • the film edge 17 itself is formed in the form of an overlap seam.
  • the film take-off 6 is operated continuously.
  • the longitudinal welding device 18 and the edge welders 15 are continuously driven, revolving Sealing bands.
  • the edge welding devices 15 each have a counter holder on.
  • the two gusset generators 26 of a pair 24, 25 are against each other and in the film tube 8 located between them movable to To produce gussets in the bag 13.
  • a pair 24 is in the film transport direction and a pair 25 is provided after the cross-welder 10.
  • the forming shoulder 5 has a lateral slot 28 through which the film edge 17 is led out.
  • two film retainers 29 are on Filling tube 7 is provided, which are each arranged between two Folienspreizem 30, to preform the film tube 8 for welding the edges 21.
  • the bag opening aid 32 is a strip-shaped Peel Mrs which enters the longitudinal seam 20 and serves to generate such Bag 13 easier to open.
  • the bag 13 has four side folds 33 and is on the head side and bottom side by means each closed a transverse seam 11. Next to one of its four welded edges 21 extends its longitudinal seam 20.
  • the peel layer within the longitudinal seam 20 allows a simple opening of the longitudinal seam 20 by mounting.

Abstract

The form-and-fill machine has a feed roller (3) for plastic sheet (2) and a folding roller (4) which forms the sheet into shoulder portions (34, 35) of different lengths. A feeder (6) moves the sheet on to a filler pipe (7). A welder (10) produces transverse welds and spreaders with individual welding devices (15) weld the edges held by the spreaders. The novelty is that a separate welder (18) produces a weld along the edge (16) of the bag.

Description

Die Erfindung betrifft eine Schlauchbeutelmaschine mit einer Folienbahn, einer Vorratsrolle, Umlenkrollen zur Zuführung der ebenen Folienbahn zu einer Formschulter, einem Folienabzug zum Transport der Folienbahn, einem Füllrohr zur Aufnahme der zu einem Folienschlauch umgeformten Folienbahn, Backen einer Querschweißeinrichtung zur Erzeugung von Quernähten, einer Trenneinrichtung zur Durchtrennung des Folienschlauches, und mit dem Füllrohr verbundenen, vom Füllrohr weg weisenden, flachen Spreizelementen, wobei in Folientransportrichtung den Spreizelementen nachgeordnet jeweils eine Kantenschweißeinrichtung pro Spreizelement vorgesehen ist, die gegen den von jeweils einem Spreizelement ausgelenkten Schlauchrand gerichtet ist.The invention relates to a tubular bag machine with a film web, a Supply roll, deflection rollers for feeding the flat film web to a forming shoulder, a film take-off for transporting the film web, a filling tube for receiving the a film tube formed film web, baking a transverse welding device for the production of transverse seams, a separating device for the transection of the Foil tube, and connected to the filling tube, pointing away from the filling tube, flat spreading elements, wherein in the direction of transporting the spreading elements arranged downstream one edge welding device per spreading element, directed against the deflected by a spreader hose edge is.

Eine derartige, bekannte Schlauchbeutelmaschine dient der Herstellung von Schlauchbeuteln, deren vier Kanten verschweißt sind. Diese Schlauchbeutel haben eine relativ gute Stabilität.Such a known tubular bag machine is used to produce Tubular bags whose four edges are welded. These tubular bags have one relatively good stability.

Bei einer aus der EP 0 627 355 A bekannten Schlauchbeutelmaschine wird mittels einer symmetrischen Formschulter eine beutelmittig angeordnete Längsnaht erzeugt. Die Kanten des Beutels werden separat verschweißt, so dass ein Beutel fünf längs verlaufende Schweißnähte aufweist.In a tubular bag machine known from EP 0 627 355 A is by means of a symmetrical form shoulder creates a central line arranged in the middle of the bag. The Edges of the bag are welded separately, leaving a bag five longitudinal having running welds.

Des weiteren ist aus der IT 0 127 41 00 B eine derartige Schlauchbeutelmaschine bekannt, bei der eine Längsnaht in Form einer Übenappungsnaht an einem Folienschlauch anliegt.Furthermore, from the IT 0 127 41 00 B such a bag machine in which a longitudinal seam in the form of a Übenappungsnaht on a Film tube is applied.

Ein Beutel mit lediglich vier längs verlaufenden Schweißnähten weist keine die Beutelbedruckung beeinträchtigende Längsnaht auf. Für die Herstellung eines Beutels mit mittiger, die Beutelbedruckung dort unterbrechende Längsnaht wird eine herkömmliche, symmetrische Formschulter verwendet.A bag with only four longitudinal welds has none Bag printing impairing longitudinal seam on. For the production of a bag with central, the bag printing there interrupting longitudinal seam is a conventional, symmetrical form shoulder used.

Die bekannten Schlauchbeutelmaschinen bieten nicht die Möglichkeit, Beutel mit gut zu handhabender Öffnungshilfe oder Wiederverschließhilfe derart herzustellen, dass diese Hilfe die besondere Form des längs seinen vier Kanten verschweißten Beutels nutzt. The known tubular bag machines do not offer the possibility to bag with good too handle opening assistance or reclosing so that they Help uses the special shape of the bag welded along its four edges.

Der Erfindung liegt die Aufgabe zu Grunde, diesen Nachteil bei einer Schlauchbeutelmaschine gemäß dem Oberbegriff des Anspruchs 1 zu beseitigen.The invention is based on the object, this disadvantage in a Tubular bag machine according to the preamble of claim 1 to eliminate.

Gelöst ist die Aufgabe gemäß dem kennzeichnenden Teil des Anspruchs 1. Dabei ist eine separate Längsschweißeinrichtung für eine Verschweißung des dem Schlauchrand benachbarten Bereichs vorgesehen. Durch den Einsatz der asymmetrischen Formschulter wird die ansonsten beutelmittig verlaufende Längsnaht in den Bereich einer Kante des Beutels gelegt, so dass eine separate, mittig verlaufende Längsnaht nicht mehr vorkommt. Die Längsschweißeinrichtung ist gegenüber der ihr benachbarten Kantenschweißeinrichtung zu den Folienrändern hin versetzt.The object is achieved according to the characterizing part of claim 1. It is a separate longitudinal welding device for welding the hose edge provided adjacent area. Through the use of asymmetric Form shoulder is the otherwise centerline extending longitudinal seam in the area placed one edge of the bag, so that a separate, centrally extending longitudinal seam no longer occurs. The longitudinal welding device is opposite to its adjacent Edge welding device offset to the film edges.

Die Erfindung hat den Vorteil, dass infolge der beiden an einem Schlauchrand vorgesehenen Schweißeinrichtungen, nämlich einer Kantenschweißeinrichtung und der separaten Längsschweißeinrichtung, zwei Längsnähte direkt nebeneinander im Bereich des Schlauchrandes, an dem der Folienschlauch längs verschlossen wird, erzeugt werden. Von diesen beiden Längsnähten kann eine Naht als relativ aufreißsichere und nicht wiederverschließbare Naht vorgesehen sein, und die andere Naht kann als leicht zu öffnende oder als wieder verschließbare Naht dienen. Oder aber eine Naht erfüllt infolge ihrer Kantenverschweißung in erster Linie den Zweck einer Beutelstabilisierung und die andere Naht dient einem sicheren Beutelverschluss. Dann hat z. B. die Kanten verschweißende Naht im Allgemeinen eine geringere Festigkeit als die Beutel verschweißende Längsnaht.The invention has the advantage that due to the two at a hose edge provided welding devices, namely an edge welding device and the separate longitudinal welding device, two longitudinal seams directly next to each other in the area the hose edge at which the film tube is longitudinally sealed generates become. Of these two longitudinal seams, a seam can be considered relatively tear-proof and non-reclosable seam may be provided, and the other seam may be as light openable or resealable seam. Or fulfilled a seam due to their edge sealing primarily the purpose of bag stabilization and the other seam provides a secure bag closure. Then z. As the edges Welding seam generally has lower strength than the bag welding longitudinal seam.

Besondere Bedeutung hat ein derart erzeugter Beutel auch dann, wenn die äußere, d. h. die zuerst zu öffnende Naht eine in einfacher Weise zu öffnende Naht ist, und die sich daran anschließende Naht die Funktion der Kantenstabilisierung erfüllt. Die zuerst zu öffnende Naht kann hierbei eine Wiederverschließhilfe aufweisen.Special importance has such a generated bag even if the outer, d. H. the seam to be opened first is a seam which can be easily opened, and subsequent seam fulfills the function of edge stabilization. The first seam to be opened may have a resealing aid.

Da die Längsschweißeinrichtung gegenüber der ihr benachbarten Kantenschweißeinrichtung zum Folienrand hin versetzt ist, bewirkt die Längsschweißeinrichtung den Verschluss des Folienschlauches an der Stelle, an welcher die beiden Folienränder zusammentreffen. An diesen Rändern schließt sich ein Kantenbereich an. Diese Anordnung erlaubt in einfacher Weise die Herstellung von an vier Kanten verschweißten Beuteln mit von einer Kante begrenzten Längsnaht. Die Kante kann hierbei auch ohne Beutel verschließende Eigenschaft ausgebildet sein. Since the longitudinal welding device with respect to the adjacent edge welding device offset to the film edge, the longitudinal welding device causes the Closure of the film tube at the point where the two film edges meet. These edges are followed by an edge area. These Arrangement allows the production of welded at four edges in a simple manner Bags with a longitudinal seam bounded by an edge. The edge can also be without Be formed pouch occlusive property.

Die vorgeschlagene Schlauchbeutelmaschine dient zur Herstellung von Beuteln, deren Folienrand in Form einer Überlappungsnaht am Beutel (Folienschlauch) anliegt. Das Anliegen kann mittels einer entsprechenden Verschweißung vorgesehen werden.The proposed tubular bag machine is used to produce bags whose Foil edge in the form of an overlap seam on the bag (film tube) is applied. The Concern can be provided by means of a corresponding weld.

Da an der ebenen Folienbahn eine Einrichtung zum Anbringen einer Beutelöffnungshilfe oder einer Wiederverschließhilfe angebracht ist, und diese Hilfe zum Einlauf in die Längsnaht und/oder die zu verschweißenden Kanten vorgesehen ist, so kann eine ausgewählte Naht mit einer entsprechenden Hilfe ausgestattet werden. Als Hilfe eignen sich gemäss Anspruch 2 insbesondere eine streifenförmige Peelschicht, um ein leichtes Öffnen nach Ergreifen der Folienränder zu erreichen, ein doppelseitig klebender Klebestreifen, um einen sicheren Verschluss in Verbindung mit einer Wiederverschließbarkeit zu erzielen, sowie ein Zipp-Wiederverschlussstreifen, um insbesondere ein wiederholtes Wiederverschließen nutzen zu können.As on the flat film web means for attaching a bag opening aid or a reclosure aid is attached, and this aid to enema in the Longitudinal seam and / or the edges to be welded is provided, so may selected seam can be equipped with an appropriate help. As help according to claim 2, in particular a strip-shaped peel layer to a light Opening after grabbing the film edges to achieve a double-sided adhesive Adhesive tape to secure closure in conjunction with a Reclosability, as well as a zip-reclosable strip to in particular to be able to use a repeated resealing.

Die Schlauchbeutelmaschine kann kontinuierlich oder getaktet betrieben werden. Entsprechend erfolgt der Betrieb des Folienabzuges. Für eine kontinuierliche Betriebsweise eignen sich zum längs Verschweißen umlaufende Siegelbänder (Anspruch 3) und ein rotierendes System von Querbacken. Heißsiegelbacken, die taktweise betrieben werden (Anspruch 4) können bei einer getakteten Betriebsweise genutzt werden.The tubular bag machine can be operated continuously or clocked. Accordingly, the operation of the film take-off takes place. For a continuous Operating mode suitable for longitudinal welding circumferential sealing bands (Claim 3) and a rotating system of transverse jaws. Heat seal baking, the can be operated in cycles (claim 4) can in a clocked operation be used.

Seitenfaltenerzeuger dienen dazu, Seitenfalten im Folienschlauch zu erzeugen. Ein Paar gegeneinander beweglicher Seitenfaltenerzeuger wird genutzt, um zwei gegenüberliegende Seitenfalten in den Folienschlauch zu stechen. Derart werden mittels zwei Paaren von Seitenfaltenerzeugern, wobei ein Paar in Folientransportrichtung vor und ein Paar nach der Querschweißeinrichtung vorgesehen ist (Anspruch 5), Schlauchbeutel mit jeweils zwei gegenüber liegenden Quernähten verschweißt. Diese Beutel sind sehr formstabil. Sie werden kopfseitig und bodenseitig mittels Quernähten verschweißt. Die Seitenfalten werden in den Quernähten eingeschweißt. Ist der Abstand des einen Paars von der Querschweißeinrichtung gleich dem Abstand des anderen Paars von der Querschweißeinrichtung (Anspruch 6), so ist der Beutel hinsichtlich seiner Seitenfaltenanordnung symmetrisch und kann relativ rund geformt werden, um in auf Kanten gestellter Form ein Dosen ähnliches Aussehen zu haben und in vorteilhaftester Weise (Materialeinsparung) als Dosenersatz zu dienen. Gussets are used to create gussets in the film tube. One Pair of mutually movable gusset generators are used to make two to pierce opposite gussets in the film tube. To be like that by means of two pairs of gussets, one pair in gussets Folientransport direction before and a pair provided after the cross-welding device is (claim 5), tubular bag with two opposite transverse seams welded. These bags are very dimensionally stable. They become head-sided and bottom-sided welded by cross seams. The gussets are in the cross seams shrink wrapped. Is the distance of the one pair of the transverse welding device the same the distance of the other pair of the transverse welding device (claim 6), so is the bag is symmetrical with respect to its gusset arrangement and can be relatively round can be shaped to give a can-like appearance in edged form have and serve in the most advantageous manner (material savings) as can substitute.

Weist die Formschulter einen seitlichen Schlitz auf, durch den der Folienrand herausgeführt wird (Anspruch 7), so kann die Schlauchbeutelmaschine mit einer herkömmlichen, jedoch geschlitzten, asymmetrischen Formschulter ausgerüstet werden.Does the form shoulder on a side slot through which the film edge is led out (claim 7), then the tubular bag machine with a conventional, but slotted, asymmetric form shoulder equipped become.

Eine Vorformung der Kanten kann in technisch einfachster Weise und unabhängig von der Betriebsart der Schlauchbeutelmaschine erfolgen, wenn gemäss Anspruch 8 im Bereich der Formschulter zwei Folienrückhalter vorgesehen sind, die jeweils zwischen zwei Folienspreizem angeordnet sind, um den Folienschlauch für eine Kantenverschweißung vorzuformen. Diese Folienspreizer werden für eine sichere Vorformung am Füllrohr angebracht (Anspruch 9).A preforming of the edges can be done in a technically simplest way and independently of the mode of the tubular bag machine, if according to claim 8 in Area of the forming shoulder two film restraints are provided, each between two Folienspreizem are arranged to the film tube for a Preforming edge welding. These foil spreaders are for a safe Preforming attached to the filling tube (claim 9).

Im folgenden wird die erfindungsgemäße Schlauchbeutelmaschine an Hand einer Figur näher beschrieben. Es zeigt:

Figur 1
in einer Seitenansicht das Prinzip einer Schlauchbeutelmaschine zur Erzeugung eines Schlauchbeutels mit einer asymmetrischen Formschulter zur Umformung einer ebenen Folienbahn zu einem Folienschlauch, einem verjüngten Füllrohr, flachen Spreizelementen, geschlossenen, umlaufenden Backen einer Querschweißeinrichtung, mit gegen die ausgelenkten Schlauchränder gerichteten Kantenschweißeinrichtungen, sowie einer separaten Längsschweißeinrichtung.
In the following, the tubular bag machine according to the invention will be described in more detail with reference to a figure. It shows:
FIG. 1
in a side view, the principle of a tubular bag machine for producing a tubular bag with an asymmetric form shoulder for forming a flat film web to a film tube, a tapered filling tube, flat expansion elements, closed, circumferential jaws of a transverse welding device, directed against the deflected tube edges edge welding devices, and a separate longitudinal welding device ,

Bei einer vertikalen Schlauchbeutelmaschine 1 wird eine ebene Folienbahn 2 von einer Vorratsrolle 3 abgewickelt und über eine Umlenkrolle 4 einer asymmetrischen Formschulter 5 zugeführt (Figur 1). Die Kragen-Brustteile 34, 35 der Formschulter 5 sind verschieden lang. Ein Folienabzug 6 dient dem Weitertransport der Folienbahn 2. Ein Füllrohr 7 nimmt die zu einem Folienschlauch 8 geformte Folienbahn 2 auf. Gegeneinander bewegliche Backen 9 einer Querschweißeinrichtung 10 dienen der Erzeugung von Quernähten 11 am Folienschlauch 8. In einer der Backen 9 befindet sich eine Trenneinrichtung 12 zur Durchtrennung des Folienschlauches 8 zwischen jeweils zwei Quernähten 11. Durch das Füllrohr 7 erfolgt eine Befüllung der erzeugten Beutel 13.In a vertical tubular bag machine 1 is a flat film web 2 of a Supply roll 3 unwound and a deflection roller 4 an asymmetric Form shoulder 5 fed (Figure 1). The collar breast parts 34, 35 of the form shoulder 5 are different lengths. A film take-off 6 serves for the further transport of the film web 2. A filling tube 7 receives the film web 2 formed into a film tube 8. Against each other movable jaws 9 a transverse welding device 10 serve the Production of transverse seams 11 on the film tube 8. In one of the jaws 9 is located a separator 12 for the separation of the film tube 8 between two transverse seams 11. Through the filling tube 7, a filling of the generated Bag 13.

Mit dem Füllrohr 7 sind vier vom Füllrohr 7 weg weisende, flache Spreizelemente 14 verbunden. In Folientransportrichtung den Spreizelementen 14 nachgeordnet, d. h. unterhalb der Spreizelemente 14, ist jeweils eine Kantenschweißeinrichtung 15 pro Spreizelement 14 vorgesehen, die jeweils gegen von einem Spreizelement 14 ausgelenkten Schlauchrand 16 gerichtet ist.With the filling tube 7 four facing away from the filling tube 7, flat spreading elements 14th connected. Subordinated in the direction of film transport the spreading elements 14, d. H. below the spreading elements 14, one edge welding device 15 per Spreading element 14 is provided, each against a spreader 14th deflected hose edge 16 is directed.

Die Formschulter 7 versetzt die aufeinander liegenden Folienränder 17 nach rechts an die Seite des Folienschlauches 8. Eine separate Längsschweißeinrichtung 18 ist für eine Verschweißung des dem Schlauchrand 16 benachbarten Bereichs vorgesehen, um zwei direkt nebeneinander liegende Schweißnähte zu erzeugen. Die Längsschweißeinrichtung 18 erzeugt eine Längsnaht 20, wohingegen jede Kantenschweißeinrichtung 15 eine verschweißte Kante 21 am Folienschlauch 8 erzeugt. Die Längsschweißeinrichtung 18 ist gegenüber der ihr benachbarten Kantenschweißeinrichtung 15 zum Folienrand 17 hin versetzt. Der Folienrand 17 selbst ist in Form einer Überlappungsnaht ausgebildet.The forming shoulder 7 puts the superimposed film edges 17 to the right the side of the film tube 8. A separate longitudinal welding device 18 is for a welding of the hose rim 16 adjacent area provided to create two directly adjacent welds. The longitudinal welding device 18 produces a longitudinal seam 20, whereas each edge welding device 15 produces a welded edge 21 on the film tube 8. The longitudinal welding device 18 is opposite to the adjacent edge welding device 15 to the film edge 17th offset. The film edge 17 itself is formed in the form of an overlap seam.

Der Folienabzug 6 wird kontinuierlich betrieben. Die Längsschweißeinrichtung 18 und die Kantenschweißeinrichtungen 15 sind kontinuierlich angetriebene, umlaufende Siegelbänder. Die Kantenschweißeinrichtungen 15 weisen jeweils einen Gegenhalter auf.The film take-off 6 is operated continuously. The longitudinal welding device 18 and the edge welders 15 are continuously driven, revolving Sealing bands. The edge welding devices 15 each have a counter holder on.

An der Querschweißeinrichtung 10 sind zwei Paar 24, 25 Seitenfaltenerzeuger 26 vorgesehen. Die beiden Seitenfaltenerzeuger 26 eines Paars 24, 25 sind gegeneinander und in den zwischen ihnen befindlichen Folienschlauch 8 bewegbar, um Seitenfalten im Beutel 13 zu erzeugen. Ein Paar 24 ist in Folientransportrichtung vor und ein Paar 25 nach der Querschweißeinrichtung 10 vorgesehen. Der Abstand 27 des einen Paars 24 von der Querschweißeinrichtung 10 ist, in Folientransportrichtung gesehen, gleich dem Abstand 27 des anderen Paars 25 von der Querschweißeinrichtung 10.At the transverse welding device 10 are two pairs 24, 25 gusset 26th intended. The two gusset generators 26 of a pair 24, 25 are against each other and in the film tube 8 located between them movable to To produce gussets in the bag 13. A pair 24 is in the film transport direction and a pair 25 is provided after the cross-welder 10. The distance 27 of a pair 24 of the transverse welding device 10, in the film transport direction seen equal to the distance 27 of the other pair 25 of the Crosswelding device 10.

Die Formschulter 5 weist einen seitlichen Schlitz 28 auf, durch den der Folienrand 17 herausgeführt wird. Im Bereich der Formschulter 5 sind zwei Folienrückhalter 29 am Füllrohr 7 vorgesehen, die jeweils zwischen zwei Folienspreizem 30 angeordnet sind, um den Folienschlauch 8 für eine Verschweißung der Kanten 21 vorzuformen.The forming shoulder 5 has a lateral slot 28 through which the film edge 17 is led out. In the area of the forming shoulder 5, two film retainers 29 are on Filling tube 7 is provided, which are each arranged between two Folienspreizem 30, to preform the film tube 8 for welding the edges 21.

An der ebenen Folienbahn 2 ist eine Einrichtung 31 zum Anbringen einer Beutelöffnungshilfe 32 angebracht. Die Beutelöffnungshilfe 32 ist eine streifenförmige Peelschicht, die in die Längsnaht 20 einläuft und dazu dient, einen derart erzeugten Beutel 13 leichter öffnen zu können. On the flat film web 2 is a device 31 for attaching a Bag opening aid 32 attached. The bag opening aid 32 is a strip-shaped Peelschicht which enters the longitudinal seam 20 and serves to generate such Bag 13 easier to open.

Der Beutel 13 weist vier Seitenfalten 33 auf und ist kopfseitig und bodenseitig mittels jeweils einer Quernaht 11 verschlossen. Neben einer seiner vier verschweißten Kanten 21 verläuft seine Längsnaht 20. Die Peelschicht innerhalb der Längsnaht 20 ermöglicht ein einfaches Öffnen der Längsnaht 20 durch Aufziehen.The bag 13 has four side folds 33 and is on the head side and bottom side by means each closed a transverse seam 11. Next to one of its four welded edges 21 extends its longitudinal seam 20. The peel layer within the longitudinal seam 20 allows a simple opening of the longitudinal seam 20 by mounting.

Die erzeugten Beutel 13 können auf die Kanten 21 gestellt werden, an denen die Längsnaht 20 nicht vorkommt. Dann kann die oben liegende Längsnaht 20 geöffnet werden, um Produkt aus dem Beutel 13 zu entnehmen. Die Kanten 21 stabilisieren den Beutel 13. Es könnte auch die an der Längsnaht 20 angrenzende Kante 21 dicht verschlossen sein und in der Längsnaht 20 könnte sich ein doppelseitig klebender Klebestreifen oder ein Zipp-Wiederverschlussstreifen befinden, um eine einfache Wiederverschließung des Beutels 13 zu erreichen. Alternativ dazu kann auch die Längsnaht 20 fest verschweißt werden und die benachbarte Kante 21 mit einer Wiederverschließhilfe versehen werden. Dazu müsste dann die Einrichtung 31 ein wenig zur Mitte 36 der Folienbahn 2 versetzt werden.

1
Schlauchbeutelmaschine
2
Folienbahn
3
Vorratsrolle
4
Umlenkrolle
5
Formschulter
6
Folienabzug
7
Füllrohr
8
Folienschlauch
9
Backe
10
Querschweißeinrichtung
11
Quemaht
12
Trenneinrichtung
13
Beutel
14
Spreizelement
15
Kantenschweißeinrichtung
16
Schlauchrand
17
Folienrand, unverschweißt
18
Längsschweißeinrichtung
20
Längsnaht
21
verschweißte Kante
24, 25
Paar
26
Seitenfaltenerzeuger
27
Abstand
28
Schlitz
29
Folienrückhalter
30
Folienspreizer
31
Einrichtung zum Anbringen
32
Beutelöffnungshilfe
33
Seitenfalte
34,35
Kragen-Brustteil
36
Mitte der Folienbahn 2
The generated bag 13 can be placed on the edges 21, where the longitudinal seam 20 does not occur. Then the overhead longitudinal seam 20 can be opened to remove product from the bag 13. The edges 21 stabilize the bag 13. It could also be tightly closed at the longitudinal seam 20 edge 21 and in the longitudinal seam 20 could be a double-sided adhesive strip or Zipp-Wiederverschlussstreifen to achieve a simple reclosure of the bag 13. Alternatively, the longitudinal seam 20 can be firmly welded and the adjacent edge 21 can be provided with a Wiederverschließhilfe. For this purpose, the device 31 would then have to be slightly offset from the center 36 of the film web 2.
1
Fill and seal machine
2
sheet
3
supply roll
4
idler pulley
5
forming shoulder
6
film take-off
7
filling pipe
8th
film tube
9
jaw
10
Transverse welding device
11
Quemaht
12
separator
13
bag
14
spreader
15
Edge welding device
16
hose edge
17
Foil edge, unwelded
18
Longitudinal welding device
20
longitudinal seam
21
welded edge
24, 25
Pair
26
Gusseted producer
27
distance
28
slot
29
foil retainer
30
film spreader
31
Device for attaching
32
Bag opening aid
33
gusset
34.35
Collar chest piece
36
Center of the film web 2

Claims (9)

  1. A bag forming, filling and sealing machine (1) having a film web (2), a feed roller (3), idle rollers (4) for supplying the planar film web (2) to a forming shoulder (5), a film delivery means (6) for transporting the film web (2), a filling pipe (7) for receiving the film web (2) which has been formed into a film tube, the film edges (17) of the film web (2) lying on one another in such a way that one film edge lies against the bag (13) in the form of an overlapping seam, jaws (9) of a transverse welding device (10) for producing transverse seams (11), a separating device (12) for separating-off the film tube (8), and flat spreader elements (14) which are connected to the filling pipe (7) and face away from the filling pipe (7), one edge welding device (15) per spreader element (14) being provided in each case downstream of the spreader elements (14) as seen in the film transport direction and being directed towards the tube edge deflected by a respective spreader element (14), characterised in that an asymmetrical forming shoulder (5) having front collar parts (34, 35) of different lengths is provided as the forming shoulder (5), in that a separate longitudinal welding device (18) is provided for welding the region (19) adjacent to the tube edge (16), the longitudinal welding device (18) being offset towards the film edges (17) with respect to the edge welding device (15) adjacent to it, a device (31) for attaching a bag-opening aid (32) or a reclosing aid is attached to the planar film web (2) and this aid is provided to arrive in the longitudinal seam (20) and/or the edges (21) to be welded.
  2. A bag forming, filling and sealing machine according to Claim 1, characterised in that a strip-shaped peelable layer, a double-sided adhesive strip or a reclosable zip strip is provided as an aid.
  3. A bag forming, filling and sealing machine according to Claim 1 or Claim 2, characterised in that the film delivery means (6) is a continuously operated film delivery means (6) and in that both the longitudinal welding device (18) and the edge welding devices (15) are continuously driven welding devices, particularly continuous sealing belts.
  4. A bag forming, filling and sealing machine according to Claim 1 or Claim 2, characterised in that the film delivery means is a phase-operated film delivery means and both the longitudinal welding device and the edge welding devices are phase-driven welding devices, particularly heat-sealing jaws.
  5. A bag forming, filling and sealing machine according to at least one of Claims 1 to 4, characterised in that two pairs (24, 25) of side fold generators (26) are provided on the transverse welding device (10), in that the two side fold generators (26) of a pair (24, 25) are movable with respect to one another and into the film tube located between them, and in that one pair (24) is provided upstream of, and one pair (25) downstream of, the transverse welding device (10) as seen in the film transport direction.
  6. A bag forming, filling and sealing machine according to Claim 4, characterised in that the spacing (27) between one pair (24) and the transverse welding device (10), as seen in the film transport direction, is equal to the spacing (27) between the other pair (25) and the transverse welding device (10).
  7. A bag forming, filling and sealing machine according to at least one of Claims 1 to 5, characterised in that the forming shoulder (5) has a lateral slot (28) through which the film edge (17) is guided out.
  8. A bag forming, filling and sealing machine according to at least one of Claims 1 to 6, characterised in that, provided in the region of the forming shoulder (5), there are two film retainers (29) which are each arranged between two film spreaders (30) in order to pre-form the film tube (8) for welding the edges (21).
  9. A bag forming, filling and sealing machine according to Claim 7, characterised in that the film spreaders (30) are mounted on the filling pipe (7).
EP04014687A 1999-12-01 2000-11-23 Machine for making tubular bags Revoked EP1464578B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19957891A DE19957891A1 (en) 1999-12-01 1999-12-01 Tubular bag machine
DE19957891 1999-12-01
EP00125666A EP1106508B1 (en) 1999-12-01 2000-11-23 Machine for making tubular bags

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP00125666A Division EP1106508B1 (en) 1999-12-01 2000-11-23 Machine for making tubular bags

Publications (2)

Publication Number Publication Date
EP1464578A1 EP1464578A1 (en) 2004-10-06
EP1464578B1 true EP1464578B1 (en) 2005-06-29

Family

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EP04014687A Revoked EP1464578B1 (en) 1999-12-01 2000-11-23 Machine for making tubular bags
EP00125666A Revoked EP1106508B1 (en) 1999-12-01 2000-11-23 Machine for making tubular bags
EP04014688A Expired - Lifetime EP1462364B2 (en) 1999-12-01 2000-11-23 Machine for making tubular bags

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EP00125666A Revoked EP1106508B1 (en) 1999-12-01 2000-11-23 Machine for making tubular bags
EP04014688A Expired - Lifetime EP1462364B2 (en) 1999-12-01 2000-11-23 Machine for making tubular bags

Country Status (5)

Country Link
US (1) US6729112B2 (en)
EP (3) EP1464578B1 (en)
AT (3) ATE306420T1 (en)
DE (4) DE19957891A1 (en)
ES (3) ES2242176T3 (en)

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US6729112B2 (en) 2004-05-04
DE50007676D1 (en) 2004-10-14
EP1106508B1 (en) 2004-09-08
DE50010650D1 (en) 2005-08-04
EP1464578A1 (en) 2004-10-06
DE19957891A1 (en) 2001-06-07
EP1462364A1 (en) 2004-09-29
ATE298703T1 (en) 2005-07-15
ES2242176T3 (en) 2005-11-01
ATE306420T1 (en) 2005-10-15
EP1462364B1 (en) 2005-10-12
EP1106508A1 (en) 2001-06-13
US20010005979A1 (en) 2001-07-05
ATE275499T1 (en) 2004-09-15
ES2228384T3 (en) 2005-04-16
ES2250945T3 (en) 2006-04-16
EP1462364B2 (en) 2009-07-22
DE50011347D1 (en) 2006-02-23
ES2250945T5 (en) 2009-12-11

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