EP2209613A2 - Apparatus for, and method of, producing a bag from paper, and paper bag - Google Patents

Apparatus for, and method of, producing a bag from paper, and paper bag

Info

Publication number
EP2209613A2
EP2209613A2 EP08850953A EP08850953A EP2209613A2 EP 2209613 A2 EP2209613 A2 EP 2209613A2 EP 08850953 A EP08850953 A EP 08850953A EP 08850953 A EP08850953 A EP 08850953A EP 2209613 A2 EP2209613 A2 EP 2209613A2
Authority
EP
European Patent Office
Prior art keywords
bag
adhesive
wall
paper
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08850953A
Other languages
German (de)
French (fr)
Other versions
EP2209613B1 (en
Inventor
Jörg Christian THIES
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP2209613A2 publication Critical patent/EP2209613A2/en
Application granted granted Critical
Publication of EP2209613B1 publication Critical patent/EP2209613B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
    • 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
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/10—Feeding or positioning 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B70/16—Cutting 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/62—Uniting opposed surfaces or edges; Taping by adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/812—Applying patches, strips or strings on sheets or webs
    • B31B70/8123—Applying strips

Definitions

  • the invention relates to a bag machine for the production of bags made of Pandamatehal according to the preamble of claim 1 and a method for producing bags of paper material according to the preamble of claim. 8
  • Pouch machines usually initially comprise an unwinding device in which web-shaped paper material is withdrawn. The material is then fed in a transport direction of the actual bag machine. In a first processing step, which is carried out in a corresponding station, the web material is provided with transverse perforations or cross sections, so that lines of weakness arise.
  • a cutting and / or perforation tool is usually applied to a rotating shaft. This tool dips into the sheet-like material, which runs over a counter roll, whereby the lines of weakness arise. Along these lines of weakness, the paper material can be separated into sections. The distance between two lines of weakness thus determines the length of the bag.
  • the separation into sections is usually carried out after passing through a hose forming station, in which the side regions of the web-shaped paper material to form an overlap region turned over and in which the facing sides of the overlapping area are joined together, for example by applying a suitable paper glue.
  • the wall of the tubing comprising the longitudinal seam formed in this way is generally referred to as the upper wall of the tubing or of the tubing section. Accordingly, the other wall is referred to as the bottom wall.
  • the gusseting is preferably carried out together with the actual tube formation. Prior to folding into the hose, the subsequent overlap area must be covered with adhesive, such as starch glue, for a permanent connection.
  • the hose in the separating device is consequently separated along the weakening lines to form hose sections.
  • a single line of weakness can only have perforations, but according to the aforementioned DE 35 29 746 A1, they can also comprise smooth cuts.
  • a weakening line comprises a plurality of sections which, as seen in the transport direction, occupy different positions, ie are offset from one another. The course of the weakening line is chosen so that the forward end of the lower wall projects beyond the leading end of the upper wall. In this way it is possible, in the further processing process, to fold over the lower wall onto the upper wall, so that the inner side of the lower wall comes to rest on the outer side of the upper wall. For the actual bottoming the part to be folded is provided with glue before folding. At the trailing, open in the later bag end, the upper wall then dominates the lower wall.
  • a section of the upper wall is additionally removed before or during the separation process to individual tube sections, so that even at the trailing end of the lower wall projects beyond the upper wall.
  • the part of the one wall projecting beyond the other wall is called a tab.
  • the wall whose trailing end is the tab referred to as the first wall, this being irrespective of whether the wall is the upper or the lower wall.
  • bags are produced for numerous applications. If a good to be transported filled in the bag, such a bag is usually closed. Often, after filling, the upper end is often simply turned over, folded several times or rolled. In order to avoid an independent resetting of these folds, these folds are often secured with an adhesive film strip which is applied by hand. It has been recognized that adhesive film strips are often out of reach when needed. Therefore, bags are known on which an adhesive surface has already been applied to an outer wall during the manufacturing process.
  • the protective layer protecting the adhesive surface for example a coated piece of paper that has little adherence, must be peeled off and the open end of the bag must be turned once so that the outer wall subsequently rests on itself or on the flap the adhesive surface rests. It is important to ensure that the end of the bag just exactly covers the adhesive surface. If the end has been folded over too short, areas of the adhesive surface are not covered. If, on the other hand, the ending has been folded too far, the end itself is not fixed. Therefore, the bag can be unintentionally reopened, for example, when it gets stuck on other objects.
  • the object of the present invention is therefore to propose a bagging machine and a method for producing bags, so that the bags no longer have the disadvantages mentioned.
  • a device for applying adhesive surfaces on the paper material is provided in the bag machine, with each of which an adhesive surface can be applied to a region of the paper material, which is the other wall facing side of the tab in the finished bag.
  • the adhesive surface is applied to the side of the tab that represents the extension of the inside of the wall.
  • the adhesive surface can be arranged directly at the open end. Ideally, an edge of the adhesive surface directly abuts the cut or perforated edge of the bag.
  • the open end of the bag can now be folded in any length and at the same time still be securely closed. With such bags so the disadvantages of the bag of the prior art are overcome.
  • the adhesive surface can be produced in various ways. It is advisable to apply so-called labels to the paper material, which comprise a substrate provided with an adhesive layer on both sides. The first side of this adhesive layer can be fixed on the paper material, while the second layer is covered by a protective sheet, which is pulled off immediately before use.
  • the adhesive surface can also be produced by direct application of an adhesive. This application can by spraying a suitable adhesive.
  • This glue should of course be durable. Until use, therefore, the adhesive must also be covered by a protective sheet, which must be applied after the application of the adhesive layer.
  • the adhesive surface is preferably applied in the region of the tab which is not covered by the gussets. So this is the part of the flap that is free of gussets.
  • the perforation contour can conversely be designed so that there is no gusset in the region of the adhesive surface.
  • the possibility of extending the adhesive surface also on the part covered by the side folds is also feasible and not detrimental. It can also be fixed gussets, which gives the bag closure extra durability.
  • the attachment of the adhesive surfaces can in principle be carried out after different production phases of the bag. Only after the formation of the tube and before the separation of the tube into tube sections is it possible to apply the adhesive surfaces on the inside of one of the two walls or only by means of further structural elements. During or after the subsequent production phases and in the associated processing stations, the application of the adhesive surfaces is conceivable: separation into tube sections,
  • the device for applying the adhesive surface is thus arranged upstream in an advantageous embodiment of the tube forming device.
  • the paper material is still as a web before, so that all areas of this train are still accessible.
  • the entire surface can be reached, which later forms the insides of the bag walls.
  • the adhesive surface can be easily placed on the later inside.
  • the position of the adhesive surfaces is still freely selectable, since there are no geometric restrictions.
  • the position can be varied transversely to the web transport direction. This variation is particularly important when producing bags in which, as described above, the lower wall projects beyond the upper wall both at the front and at the trailing end.
  • a special feature of the said arrangement and procedure ie the application of the adhesive surface before the tube formation, is that the adhesive surfaces are arranged before the singulation of the tube to tube sections within the tube.
  • the web runs on a roller which serves as a counter-blade to a cutting and / or perforating knife. Therefore, it is conceivable to apply the adhesive surface during the introduction of the weakening line.
  • the device for applying the adhesive surfaces of the apparatus for introducing the weakening line can optionally be done, so only if there is a need for such a device. This can also be done later.
  • the said device is very easy to reach and therefore very easy to maintain.
  • the web-shaped paper material passes through a glue application device, with which a glue trace is applied to the later covering area.
  • the material runs over a roller, which represents the counter layer for the glue application.
  • the Means be provided for applying adhesive surfaces, which also uses the roller as a counter-surface. Therefore, it is of particular advantage to provide the device at this point.
  • a particularly preferred embodiment of the invention includes that the means for applying adhesive surfaces is synchronized with that of the device for generating the lines of weakness.
  • a start pulse is generated when introducing a weakening line.
  • a control device calculates the time at which the application of the adhesive layer has to be started and / or terminated. If necessary, the size of the adhesive layer is taken into account, for example, when so-called labels are to be used.
  • At least parts of the device for applying adhesive surfaces are transversely displaceable.
  • two guides can be provided transversely to the transport direction of the web.
  • a motor-driven spindle-nut combination can be provided.
  • Fig. 1 top view of the sheet-like paper material before the
  • FIG. 2 Top view of the tubing Fig. 3
  • FIG. 4 View of a finished bag from below Fig. 5
  • Fig. 1 shows web-like paper material 1 before the actual tube formation, which is guided in the transport direction x through the bag machine.
  • perforations 2 have already been introduced, which extend substantially transversely to the transport direction x. It can be seen that sections of the perforations in the transport direction x are arranged at different positions. Thus, the portion 2a is shifted relative to the sections 2b in the transport direction.
  • the longitudinal lines indicate the Lticiansfalzkanten 3 at. It can be seen in the figure that the offset of the sections 2a and 2b takes place in the region of these folded edges.
  • the fold lines 4, around which the web-shaped material is folded during tube formation when puncture-side bags are to be produced, are also shown in dotted lines.
  • the surface 5 denotes the inner side 5 of the lower wall.
  • the surfaces 6a and 6b represent the inside of the upper wall after the tube formation,
  • adhesive surfaces 7 are shown on the surface 6a.
  • the adhesive surfaces 7 are mounted on the paper material so that they are seen in the transport direction x completely before the
  • Perforation section 2b lie. However, it should be between the adhesive surface 7 and the portion 2b, but only a relatively small area, so that
  • Adhesive surface 7 may additionally or alternatively be arranged on the surface 6b.
  • the double arrow y indicates that the adhesive surface is at
  • FIG. 2 shows the tube forming process.
  • the sheet-like paper material 1 is turned over.
  • the web edges 8a, 8b are guided by the guide elements so that they are placed on the surface 5, wherein folds along the L Lucassfalzkanten 3 arise.
  • the need for inserting gussets is known in the art and therefore will not be described here.
  • the web edge 8b is folded first, followed by the web edge 8a, so that the edge 8a remains visible after the hose is formed. It is also conceivable, however, that first the edge 8a and then the edge 8b is folded.
  • FIG. 3 shows the tube 9, after which it has been singulated into tube sections.
  • This separation is usually carried out in that the tube is passed through a first nip.
  • the rollers of a further nip following in the transport direction and having at least one length of hose section away from the first nip are driven at a higher speed than the rollers of the first nip. If the rollers of the further nip detect the leading end of the tube 9, this tears along the weakening line or perforation 2.
  • the leading end of the tube section which consists of at least one lower surface extension 5, is folded over and on the upper one Wall, which includes the surfaces 6a and 6b, fixed.
  • FIG. 4 shows the same bag as FIG. 3, only turned around the longitudinal axis, so that the lower side is visible.
  • FIG. 5 schematically shows a bagging machine 20 according to the invention.
  • the sheet-like paper material 21 is wound on a roll in the unwinding station 22 and is guided from there via deflection rollers 23 into the perforation station 24 (not shown).
  • the web-shaped material passes onto a counter-roller 25.
  • This roller serves as a counter-position for the labeling station 26.
  • This station there is a roller 27 with a band, on which individual labels are applied, which are adhesive on both sides.
  • This tape is unrolled cyclically from the roll 27.
  • a single label is applied to the sheet-like paper material 1 at a predicted time.
  • the label for pressing the label in this case serves the pressing member 29, which is formed like a roll in the illustrated embodiment.
  • the tape which now carries no more labels, is then wound up on the roll 28 and can be disposed of there.
  • the sheet-like paper material provided with labels as described then passes into the hose forming station 30 (not shown in detail) and then into further stations for the production of the bags.
  • the rollers and rollers of the labeling station 26 are preferably drivable independently of the rest of the machine.
  • the drive is preferably controlled by the control of the bag machine.
  • a separate encoder for the drive is also
  • the labeling station can be provided as an optional attachment, which can be placed on the side walls of the machine frame of the bag machine.

Abstract

The invention describes a bag machine for producing bags from paper material, comprising: - an unwinding device for unwinding a paper web material and feeding it in a transporting direction (x), - a means of producing weakening lines which follow a course in which some of, or parts of, these weakening lines are offset in relation to one another in the direction (x), and a first wall of the finished bag therefore continues by way of at least one flap which extends beyond the second wall, - a flexible-tube former for forming a flexible tube, in which the side regions of the web can be folded over to form an overlapping region and can be connected to one another, - a severing device for severing flexible-tube portions from the flexible tube along the weakening lines, and - a base-forming device, in which regions of the leading end of the flexible-tube portion can be folded over and fastened on an outer wall of the flexible-tube portion. A device for applying areas of adhesive to the paper material is provided, and this device can be used to apply a respective area of adhesive to a region of the paper material which, in the finished bag, constitutes that side of the flap which is directed towards the second wall.

Description

Vorrichtung und Verfahren zur Herstellung eines Beutels aus Papier sowie Papierbeutel Apparatus and method for making a bag of paper and paper bags
Die Erfindung betrifft eine Beutelmaschine zur Herstellung von Beuteln aus Papiermatehal nach dem Oberbegriff des Anspruchs 1 und ein Verfahren zur Herstellung von Beuteln aus Papiermaterial nach dem Oberbegriff des Anspruchs 8.The invention relates to a bag machine for the production of bags made of Papiermatehal according to the preamble of claim 1 and a method for producing bags of paper material according to the preamble of claim. 8
Derartige Beutelmaschinen sind seit Längerem bekannt. Die Offenlegungsschrift DE 35 29 746 A1 gibt einen guten Überblick über eine solche Maschine. Auch das Herstellungsverfahren für Papierbeutel ist hier beschrieben.Such bagging machines have been known for some time. The published patent application DE 35 29 746 A1 gives a good overview of such a machine. The production process for paper bags is also described here.
Beutelmaschinen umfassen in der Regel zunächst eine Abwickeleinrichtung, in der bahnförmiges Papiermaterial abgezogen wird. Das Material wird dann in einer Transportrichtung der eigentlichen Beutelmaschine zugeführt. In einem ersten Bearbeitungsschritt, der in einer entsprechenden Station durchgeführt wird, wird das Bahnmaterial mit Querperforationen oder Querschnitten versehen, so dass Schwächungslinien entstehen. Hierzu ist in der Regel ein Schneid- und/oder Perforationswerkzeug auf einer rotierenden Welle aufgebracht. Dieses Werkzeug taucht in das bahnförmige Material, welches über eine Gegenwalze läuft, ein, wobei die Schwächungslinien entstehen. Entlang dieser Schwächungslinien lässt sich das Papiermaterial in Abschnitte trennen. Der Abstand zweier Schwächungslinien legt also die Länge des Beutels fest. Das Trennen in Abschnitte erfolgt in der Regel nach dem Durchlaufen einer Schlauchbildungsstation, in welcher die Seitenbereiche des bahnförmigen Papiermaterials unter Ausbildung eines Überlappungsbereiches umgeschlagen und in welcher die sich zugewandten Seiten des Überlappungsbereiches miteinander verbunden werden, beispielsweise durch Auftragen eines geeigneten Papierleims. Die auf diese Weise gebildete Längsnaht umfassende Wand des Schlauchmaterials wird in der Regel als obere Wand des Schlauches beziehungsweise des Schlauchabschnitts bezeichnet. Entsprechend wird die andere Wand als untere Wand bezeichnet. Weiterhin ist es möglich, Seitenfalten in den Schlauch einzulegen. Die Seitenfaltenbildung erfolgt bevorzugt zusammen mit der eigentlichen Schlauchbildung. Vor dem Zusammenlegen zum Schlauch muss für eine dauerhafte Verbindung der spätere Überlappungsbereich mit Klebstoff, beispielsweise Stärkeleim, belegt werden.Pouch machines usually initially comprise an unwinding device in which web-shaped paper material is withdrawn. The material is then fed in a transport direction of the actual bag machine. In a first processing step, which is carried out in a corresponding station, the web material is provided with transverse perforations or cross sections, so that lines of weakness arise. For this purpose, a cutting and / or perforation tool is usually applied to a rotating shaft. This tool dips into the sheet-like material, which runs over a counter roll, whereby the lines of weakness arise. Along these lines of weakness, the paper material can be separated into sections. The distance between two lines of weakness thus determines the length of the bag. The separation into sections is usually carried out after passing through a hose forming station, in which the side regions of the web-shaped paper material to form an overlap region turned over and in which the facing sides of the overlapping area are joined together, for example by applying a suitable paper glue. The wall of the tubing comprising the longitudinal seam formed in this way is generally referred to as the upper wall of the tubing or of the tubing section. Accordingly, the other wall is referred to as the bottom wall. Furthermore, it is possible to insert gussets in the hose. The gusseting is preferably carried out together with the actual tube formation. Prior to folding into the hose, the subsequent overlap area must be covered with adhesive, such as starch glue, for a permanent connection.
Wurde ein Schlauch gebildet, so wird folglich der Schlauch in der Trenneinrichtung entlang der Schwächungslinien zu Schlauchabschnitten vereinzelt.If a hose has been formed, the hose in the separating device is consequently separated along the weakening lines to form hose sections.
Eine einzelne Schwächungslinie kann lediglich Perforationen aufweisen, sie kann aber gemäß der eingangs erwähnten DE 35 29 746 A1 auch Glattschnitte umfassen. Eine Schwächungslinie umfasst dabei im Regelfall mehrere Abschnitte, die in Transportrichtung gesehen verschiedene Positionen einnehmen, also gegeneinander versetzt sind. Der Verlauf der Schwächungslinie ist dabei so gewählt, dass das voraus laufende Ende der unteren Wand das voraus laufende Ende der oberen Wand überragt. Auf diese Weise ist es möglich, im weiteren Verarbeitungsprozess die untere Wand auf die obere Wand umzufalten, so dass die Innenseite der unteren Wand auf der Außenseite der oberen Wand zu liegen kommt. Zur eigentlichen Bodenbildung wird der umzufaltende Teil vor der Faltung mit Leim versehen. Beim nachlaufenden, im späteren Beutel offenen Ende überragt die obere Wand dann die untere Wand. Bei bestimmten Beuteln wird jedoch vor oder während des Vereinzelungsvorgangs zu einzelnen Schlauchabschnitten zusätzlich noch ein Abschnitt der oberen Wand entfernt, so dass auch beim nachlaufenden Ende die untere Wand die obere Wand überragt. Der die andere Wand überragende Teil der einen Wand wird als Lasche bezeichnet. Im Oberbegriff des Anspruchs 1 wird die Wand, deren nachlaufendes Ende die Lasche aufweist, als erste Wand bezeichnet, wobei dies unabhängig davon gelten soll, ob die Wand die obere oder die untere Wand ist.A single line of weakness can only have perforations, but according to the aforementioned DE 35 29 746 A1, they can also comprise smooth cuts. As a rule, a weakening line comprises a plurality of sections which, as seen in the transport direction, occupy different positions, ie are offset from one another. The course of the weakening line is chosen so that the forward end of the lower wall projects beyond the leading end of the upper wall. In this way it is possible, in the further processing process, to fold over the lower wall onto the upper wall, so that the inner side of the lower wall comes to rest on the outer side of the upper wall. For the actual bottoming the part to be folded is provided with glue before folding. At the trailing, open in the later bag end, the upper wall then dominates the lower wall. For certain bags, however, a section of the upper wall is additionally removed before or during the separation process to individual tube sections, so that even at the trailing end of the lower wall projects beyond the upper wall. The part of the one wall projecting beyond the other wall is called a tab. In the preamble of claim 1, the wall whose trailing end is the tab , referred to as the first wall, this being irrespective of whether the wall is the upper or the lower wall.
Auf die beschriebene Weise werden Beutel für zahlreiche Anwendungen hergestellt. Wird ein zu transportierendes Gut in die Beutel eingefüllt, so wird ein solcher Beutel in der Regel verschlossen. Häufig wird nach dem Befüllen das obere Ende oft einfach umgeschlagen, mehrfach umgeschlagen oder gerollt. Um ein selbstständiges Rückstellen dieser Faltungen zu vermeiden, werden diese Faltungen oft mit einem Klebefilmstreifen gesichert, der händisch aufgebracht wird. Man hat erkannt, dass Klebefilmstreifen oft nicht zur Hand sind, wenn sie benötigt werden. Es sind daher Beutel bekannt, auf denen eine Klebemittelfläche bereits beim Herstellungsprozess auf eine Außenwand aufgebracht wurde. Um einen solchen Beutel sicher zu verschließen, muss nur die die Klebemittelfläche schützende Schutzschicht, beispielsweise ein beschichtetes und daher wenig haftendes Papierstück, abgezogen werden und das offene Ende des Beutels einmal umgeschlagen werden, so dass die Außenwand anschließend auf sich selbst aufliegt oder die Lasche auf der Klebemittelfläche aufliegt. Dabei ist darauf zu achten, dass das Ende des Beutels die Klebemittelfläche gerade genau überdeckt. Ist das Ende zu kurz umgefaltet worden, sind Bereiche der Klebemittelfläche nicht abgedeckt. Ist das Ende hingegen zu weit umgefaltet worden, wird das Ende selbst nicht fixiert. Daher kann der Beutel ungewollt wieder geöffnet werden, wenn er beispielsweise an anderen Gegenständen hängen bleibt.In the manner described, bags are produced for numerous applications. If a good to be transported filled in the bag, such a bag is usually closed. Often, after filling, the upper end is often simply turned over, folded several times or rolled. In order to avoid an independent resetting of these folds, these folds are often secured with an adhesive film strip which is applied by hand. It has been recognized that adhesive film strips are often out of reach when needed. Therefore, bags are known on which an adhesive surface has already been applied to an outer wall during the manufacturing process. In order to securely close such a bag, only the protective layer protecting the adhesive surface, for example a coated piece of paper that has little adherence, must be peeled off and the open end of the bag must be turned once so that the outer wall subsequently rests on itself or on the flap the adhesive surface rests. It is important to ensure that the end of the bag just exactly covers the adhesive surface. If the end has been folded over too short, areas of the adhesive surface are not covered. If, on the other hand, the ending has been folded too far, the end itself is not fixed. Therefore, the bag can be unintentionally reopened, for example, when it gets stuck on other objects.
Soll der Beutel also korrekt verschlossen werden, so ergibt sich im Wesentlichen nur ein einziges Format des verschlossenen Beutels. Dies ist allerdings häufig unerwünscht, wenn der Beutel nur zum Teil gefüllt ist. In diesem Fall ist es also gewünscht, das Ende soweit umlegen zu können, dass das Format des befüllten Beutels nicht größer als notwendig ist. Dies ist allerdings mit Beuteln des Standes der Technik nicht möglich, wenn diese die Möglichkeit bieten sollen, sicher verschlossen zu werden. Die Aufgabe der vorliegenden Erfindung ist es daher, eine Beutelmaschine und ein Verfahren zur Herstellung von Beuteln vorzuschlagen, so dass die Beutel die genannten Nachteile nicht mehr aufweisen.If the bag is to be closed correctly, essentially only one single format of the sealed bag results. However, this is often undesirable if the bag is only partially filled. In this case, it is therefore desirable to be able to relocate the end so far that the format of the filled bag is not larger than necessary. However, this is not possible with bags of the prior art, if they should offer the opportunity to be securely closed. The object of the present invention is therefore to propose a bagging machine and a method for producing bags, so that the bags no longer have the disadvantages mentioned.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst.According to the invention, this object is solved by the features of the characterizing part of claim 1.
Gemäß dieser Lösung ist in der Beutelmaschine eine Einrichtung zur Aufbringung von Klebemittelflächen auf das Papiermaterial vorgesehen, mit welcher jeweils eine Klebemittelfläche auf einen Bereich des Papiermaterials aufbringbar ist, welcher beim fertigen Beutel die der anderen Wand zugewandte Seite der Lasche ist. Mit anderen Worten wird die Klebemittelfläche auf der Seite der Lasche aufgebracht, die die Verlängerung der Innenseite der Wand darstellt.According to this solution, a device for applying adhesive surfaces on the paper material is provided in the bag machine, with each of which an adhesive surface can be applied to a region of the paper material, which is the other wall facing side of the tab in the finished bag. In other words, the adhesive surface is applied to the side of the tab that represents the extension of the inside of the wall.
Mit dieser Maßnahme kann also die Klebemittelfläche direkt an dem offenen Ende angeordnet werden. Im Idealfall stößt ein Rand der Klebemittelfläche direkt an die Schnitt- oder Perforationskante des Beutels.With this measure, therefore, the adhesive surface can be arranged directly at the open end. Ideally, an edge of the adhesive surface directly abuts the cut or perforated edge of the bag.
Somit kann das offene Ende des Beutels nunmehr in beliebiger Länge umgelegt und gleichzeitig noch sicher verschlossen werden. Mit solchen Beuteln werden also die Nachteile der Beutel des Standes der Technik überwunden.Thus, the open end of the bag can now be folded in any length and at the same time still be securely closed. With such bags so the disadvantages of the bag of the prior art are overcome.
Die Klebemittelfläche kann auf verschiedene Arten erzeugt werden. Es bietet sich an, so genannte Etiketten auf das Papiermaterial aufzubringen, welche ein beidseitig mit einer Klebeschicht versehenes Trägermaterial umfassen. Mit der ersten Seite lässt sich diese Klebeschicht auf dem Papiermaterial fixieren, während die zweite Schicht durch ein Schutzblatt abgedeckt ist, welches unmittelbar vor Gebrauch abgezogen wird.The adhesive surface can be produced in various ways. It is advisable to apply so-called labels to the paper material, which comprise a substrate provided with an adhesive layer on both sides. The first side of this adhesive layer can be fixed on the paper material, while the second layer is covered by a protective sheet, which is pulled off immediately before use.
Die Klebemittelfläche kann jedoch auch durch direktes Aufbringen eines Klebstoffes erzeugt werden. Dieses Aufbringen kann durch Aufspritzen eines geeigneten Klebstoffes erfolgen. Dieser Kleber sollte natürlich dauerhaftend sein. Bis zum Gebrauch muss daher der Kleber ebenfalls durch ein Schutzblatt abgedeckt sein, welches nach dem Aufbringen der Klebstoffschicht appliziert werden muss.However, the adhesive surface can also be produced by direct application of an adhesive. This application can by spraying a suitable adhesive. This glue should of course be durable. Until use, therefore, the adhesive must also be covered by a protective sheet, which must be applied after the application of the adhesive layer.
Mit der eingangs beschriebenen Vorrichtung ist es, wie bereits angedeutet wurde, möglich, anstelle von Flachbeuteln auch Seitenfaltenbeutel zu produzieren. In diesem Fall wird die Klebemittelfläche bevorzugt in dem Bereich der Lasche aufgebracht, der nicht durch die Seitenfalten bedeckt ist. Dies ist also der von Seitenfalten freie Teil der Lasche. Bei gegebener Klebemittelflächengröße kann aber umgekehrt die Perforationskontur so gestaltet werden, dass sich im Bereich der Klebemittelfläche keine Seitenfalte befindet. Die Möglichkeit, die Klebemittelfläche auch auf den durch die Seitenfalten bedeckten Teil auszudehnen, ist jedoch ebenfalls realisierbar und nicht nachteilig. Es können dabei auch die Seitenfalten fixiert werden, was dem Beutelverschluss zusätzliche Haltbarkeit verleiht.With the device described above, it is possible, as already indicated, to produce side gusset bags instead of flat bags. In this case, the adhesive surface is preferably applied in the region of the tab which is not covered by the gussets. So this is the part of the flap that is free of gussets. For a given adhesive surface size, however, the perforation contour can conversely be designed so that there is no gusset in the region of the adhesive surface. However, the possibility of extending the adhesive surface also on the part covered by the side folds, is also feasible and not detrimental. It can also be fixed gussets, which gives the bag closure extra durability.
Die Anbringung der Klebemittelflächen kann grundsätzlich nach verschiedenen Herstellungsphasen des Beutels erfolgen. Lediglich nach der Schlauchbildung und vor der Vereinzelung des Schlauches zu Schlauchabschnitten ist das Aufbringen der Klebemittelflächen auf der Innenseite einer der beiden Wände nicht oder nur durch weitere konstruktive Elemente möglich. Während oder nach den nachfolgenden Herstellungsphasen und in den zugehörigen Bearbeitungsstationen ist das Aufbringen der Klebemittelflächen denkbar: - Vereinzelung zu Schlauchabschnitten,The attachment of the adhesive surfaces can in principle be carried out after different production phases of the bag. Only after the formation of the tube and before the separation of the tube into tube sections is it possible to apply the adhesive surfaces on the inside of one of the two walls or only by means of further structural elements. During or after the subsequent production phases and in the associated processing stations, the application of the adhesive surfaces is conceivable: separation into tube sections,
- Vorbruch der Bodenfalzung- Vorbruch the Bodenfalzung
- Leimauftrag für die Bodenleimung- Glue application for floor sizing
- Faltung des Bodens.- folding the floor.
Diese Auflistung ist nicht abschließend. Von besonders großem Vorteil ist es allerdings, die Aufbringung der Klebemittelfläche vor der Schlauchbildung durchzuführen. Die Einrichtung zur Aufbringung der Klebemittelfläche ist also in einer vorteilhaften Ausführungsform der Schlauchbildungseinrichtung vorgeordnet. Vor der Schlauchbildung liegt das Papiermaterial noch als Bahn vor, so dass sämtliche Bereiche dieser Bahn noch erreichbar sind. Insbesondere ist die gesamte Fläche erreichbar, die später die Innenseiten der Beutelwände bildet. Insbesondere wenn die vorliegende Bahn mit der späteren Außenseite der Beutel auf einer Fläche, beispielsweise die Umfangsfläche einer Führungswalze, aufliegt, kann die Klebemittelfläche sehr einfach auf die spätere Innenseite platziert werden. Auch ist die Position der Klebemittelflächen noch frei wählbar, da keine geometrischen Einschränkungen vorliegen. Insbesondere kann die Position quer zur Bahntransportrichtung variiert werden. Diese Variation ist vor allem dann wichtig, wenn Beutel produziert werden sollen, bei denen, wie eingangs beschrieben, die untere Wand sowohl am voraus laufenden als auch am nachlaufenden Ende die obere Wand überragt.This listing is not exhaustive. However, it is particularly advantageous to carry out the application of the adhesive surface before the tube is formed. The device for applying the adhesive surface is thus arranged upstream in an advantageous embodiment of the tube forming device. Before the tube formation, the paper material is still as a web before, so that all areas of this train are still accessible. In particular, the entire surface can be reached, which later forms the insides of the bag walls. In particular, when the present web rests with the later outer side of the bags on a surface such as the peripheral surface of a guide roller, the adhesive surface can be easily placed on the later inside. Also, the position of the adhesive surfaces is still freely selectable, since there are no geometric restrictions. In particular, the position can be varied transversely to the web transport direction. This variation is particularly important when producing bags in which, as described above, the lower wall projects beyond the upper wall both at the front and at the trailing end.
Ein besonderes Merkmal bei der genannten Anordnung und Vorgehensweise, also der Aufbringung der Klebemittelfläche vor der Schlauchbildung, ist, dass die Klebemittelflächen vor der Vereinzelung des Schlauches zu Schlauchabschnitten innerhalb des Schlauches angeordnet sind.A special feature of the said arrangement and procedure, ie the application of the adhesive surface before the tube formation, is that the adhesive surfaces are arranged before the singulation of the tube to tube sections within the tube.
Während der Einbringung der Schwächungslinien läuft die Bahn auf einer Walze, die einem Schneid- und/oder Perforationsmesser als Gegenlage dient. Daher ist es denkbar, während der Einbringung der Schwächungslinie auch die Klebemittelfläche aufzutragen.During the introduction of the weakening lines, the web runs on a roller which serves as a counter-blade to a cutting and / or perforating knife. Therefore, it is conceivable to apply the adhesive surface during the introduction of the weakening line.
Vorteilhaft ist es allerdings, die Einrichtung zur Aufbringung der Klebemittelflächen der Vorrichtung zur Einbringung der Schwächungslinie nachzuordnen. An einer solchen Stelle kann Anordnung einer Einrichtung zur Aufbringung der Klebemittelflächen optional erfolgen, also nur wenn der Bedarf für eine solche Einrichtung besteht. Dies kann auch nachträglich erfolgen. Insbesondere ist hier die genannte Einrichtung sehr einfach zu erreichen und daher sehr wartungsfreundlich.However, it is advantageous to rearrange the device for applying the adhesive surfaces of the apparatus for introducing the weakening line. At such a location arrangement of a device for applying the adhesive surfaces can optionally be done, so only if there is a need for such a device. This can also be done later. In particular, the said device is very easy to reach and therefore very easy to maintain.
Im Vorfeld der Schlauchbildung durchläuft das bahnförmige Papiermaterial eine Leimauftragseinrichtung, mit der eine Leimspur auf den späteren Überdeckungsbereich aufgetragen wird. Dabei läuft das Material über eine Walze, die die Gegenlage für den Leimauftrag darstellt. Hier kann auch die Einrichtung zur Aufbringung von Klebemittelflächen vorgesehen sein, die ebenfalls die Walze als Gegenlage nutzt. Daher ist es von besonderem Vorteil, die Einrichtung an dieser Stelle vorzusehen.In the run-up to the formation of the tube, the web-shaped paper material passes through a glue application device, with which a glue trace is applied to the later covering area. The material runs over a roller, which represents the counter layer for the glue application. Here can also the Means be provided for applying adhesive surfaces, which also uses the roller as a counter-surface. Therefore, it is of particular advantage to provide the device at this point.
Eine besonders bevorzugte Ausgestaltung der Erfindung beinhaltet, dass die Einrichtung zur Aufbringung von Klebemittelflächen mit dem der Vorrichtung zur Erzeugung der von Schwächungslinien synchronisiert ist. Dabei wird bei der Einbringung einer Schwächungslinie ein Startimpuls erzeugt. In Abhängigkeit von der Maschinengeschwindigkeit und der Entfernung der Einrichtung zur Aufbringung von Klebemittelflächen von der Position, an der die Schwächungslinie eingebracht wird, errechnet eine Steuereinrichtung den Zeitpunkt, zu dem Das Aufbringen der Klebemittelschicht gestartet und/oder beendet werden muss. Im Bedarfsfall ist auch die Größe der Klebemittelschicht zu berücksichtigen, beispielsweise wenn so genannte Etiketten verwendet werden sollen.A particularly preferred embodiment of the invention includes that the means for applying adhesive surfaces is synchronized with that of the device for generating the lines of weakness. In this case, a start pulse is generated when introducing a weakening line. Depending on the machine speed and the distance of the means for applying adhesive surfaces from the position at which the line of weakness is introduced, a control device calculates the time at which the application of the adhesive layer has to be started and / or terminated. If necessary, the size of the adhesive layer is taken into account, for example, when so-called labels are to be used.
In weiterer Ausgestaltung der Beutelmaschine sind zumindest Teile der Einrichtung zur Aufbringung von Klebemittelflächen querverschieblich. Dazu können zwei Führungen quer zur Transportrichtung der Bahn vorgesehen sein. Zur Bewegung kann eine motorisch angetriebene Spindel-Mutter-Kombination vorgesehen sein.In a further embodiment of the bag machine at least parts of the device for applying adhesive surfaces are transversely displaceable. For this purpose, two guides can be provided transversely to the transport direction of the web. For movement, a motor-driven spindle-nut combination can be provided.
Weitere Ausführungsbeispiele der Erfindung gehen aus der gegenständlichen Beschreibung und den Ansprüchen hervor. Die einzelnen Figuren zeigen:Further embodiments of the invention will become apparent from the description and the claims. The individual figures show:
Fig. 1 Draufsicht auf das bahnförmige Papiermaterial vor derFig. 1 top view of the sheet-like paper material before the
Schlauchbildungtube formation
Fig. 2 Draufsicht bei der Schlauchbildung Fig. 3 Draufsicht auf einen fertigen Beutel Fig. 4 Ansicht eines fertigen Beutels von unten Fig. 5 Seitenansicht einer erfindungsgemäßen Beutelmaschine Fig. 1 zeigt bahnförmiges Papiermaterial 1 vor der eigentlichen Schlauchbildung, welches in Transportrichtung x durch die Beutelmaschine geführt wird. In dieses Papiermaterial 1 sind bereits Perforationen 2 eingebracht worden, die im Wesentlichen quer zur Transportrichtung x verlaufen. Man erkennt, dass Abschnitte der Perforationen in Transportrichtung x an verschiedenen Positionen angeordnet sind. So ist der Abschnitt 2a gegenüber den Abschnitten 2b in Transportrichtung verschoben. Die in Längsrichtung verlaufenden Linien zeigen die Längsfalzkanten 3 an. In der Figur ist erkennbar, dass der Versatz der Abschnitte 2a und 2b im Bereich dieser Falzkanten erfolgt. Punktiert dargestellt sind noch die Falzlinien 4, um die das bahnförmige Material bei der Schlauchbildung gefaltet wird, wenn Seitenfaltenbeutel produziert werden sollen.Fig. 2 Top view of the tubing Fig. 3 Top view of a finished bag Fig. 4 View of a finished bag from below Fig. 5 Side view of a bagging machine according to the invention Fig. 1 shows web-like paper material 1 before the actual tube formation, which is guided in the transport direction x through the bag machine. In this paper material 1 perforations 2 have already been introduced, which extend substantially transversely to the transport direction x. It can be seen that sections of the perforations in the transport direction x are arranged at different positions. Thus, the portion 2a is shifted relative to the sections 2b in the transport direction. The longitudinal lines indicate the Längsfalzkanten 3 at. It can be seen in the figure that the offset of the sections 2a and 2b takes place in the region of these folded edges. The fold lines 4, around which the web-shaped material is folded during tube formation when puncture-side bags are to be produced, are also shown in dotted lines.
Die Fläche 5 bezeichnet die Innenseite 5 der unteren Wand. Die Flächen 6a und 6b stellen nach der Schlauchbildung die Innenseite der oberen Wand dar,The surface 5 denotes the inner side 5 of the lower wall. The surfaces 6a and 6b represent the inside of the upper wall after the tube formation,
Im gezeigten Ausführungsbeispiel sind auf der Fläche 6a Klebemittelflächen 7 gezeigt. Die Klebemittelflächen 7 sind dabei so auf dem Papiermaterial angebracht, dass sie in Transportrichtung x gesehen vollständig vor demIn the embodiment shown, adhesive surfaces 7 are shown on the surface 6a. The adhesive surfaces 7 are mounted on the paper material so that they are seen in the transport direction x completely before the
Perforationsabschnitt 2b liegen. Es sollte zwischen dem Klebemittelfläche 7 und dem Abschnitt 2b allerdings auch nur relativ wenig Fläche sein, so dassPerforation section 2b lie. However, it should be between the adhesive surface 7 and the portion 2b, but only a relatively small area, so that
Klebemittelfläche 7 und Abschnitt 2b aneinander grenzen. EineAdhesive surface 7 and section 2b adjacent to each other. A
Klebemittelfläche 7 kann zusätzlich oder alternativ auf der Fläche 6b angeordnet sein. Der Doppelpfeil y deutet an, dass die Klebemittelfläche beiAdhesive surface 7 may additionally or alternatively be arranged on the surface 6b. The double arrow y indicates that the adhesive surface is at
Bedarf quer zur Transportrichtung x verschiebbar und damit an beliebigen Stellen anordenbar ist.Need transversely to the transport direction x displaced and thus can be arranged at any point.
Die Figur 2 zeigt den Schlauchbildungsvorgang. Mittels geeigneter Führungselemente in der Beutelmaschine, beispielsweise mittels entsprechend gebogener Führungsbleche wird das bahnförmige Papiermaterial 1 umgeschlagen. Dazu werden die Bahnkanten 8a, 8b von den Führungselementen derart geführt, dass sie auf die Fläche 5 gelegt werden, wobei Faltungen entlang der Längsfalzkanten 3 entstehen. Das bedarfsweise Einlegen von Seitenfalten ist dem Fachmann bekannt und wird daher hier nicht näher beschrieben. Bei dem Umschlagen wird die Bahnkante 8b zuerst umgelegt, gefolgt von der Bahnkante 8a, so dass die Kante 8a nach erfolgter Schlauchbildung sichtbar bleibt. Denkbar ist es aber auch, dass zuerst die Kante 8a und anschließend die Kante 8b umgelegt wird. Bei der Draufsicht auf den soeben gebildeten Schlauch 9 fällt auf, dass der Perforationsabschnitt 2b sichtbar ist, da dieser in die nun oben liegende Wand eingebracht ist. An dieser oben liegenden Wand befindet sich nun auch die Klebemittelfläche 7. Da sie sich aber im Schlauchinneren befindet und in der Draufsicht nicht sichtbar ist, ist sie in der Figur 2 punktiert dargestellt. Der Perforationsabschnitt 2a ist nun ebenfalls nicht sichtbar, da die Fläche 5, in der sie eingebracht ist, nun durch die Flächen 6a und 6b bedeckt, so dass der Abschnitt 2a ebenfalls punktiert dargestellt ist. Aus der Figur 2 wird deutlich, dass vorteilhafterweise die Erstreckung der Klebemittelfläche 7 in Transportrichtung x maximal gleich der Differenz der Positionen der Abschnitte 2a und 2b ist. Auf diese Weise ist die Klebemittelfläche auf den Bereich der Lasche 10 beschränkt, was in den Figuren 3 und 4 deutlich wird.FIG. 2 shows the tube forming process. By means of suitable guide elements in the bag machine, for example by means of correspondingly curved guide plates, the sheet-like paper material 1 is turned over. For this purpose, the web edges 8a, 8b are guided by the guide elements so that they are placed on the surface 5, wherein folds along the Längsfalzkanten 3 arise. The need for inserting gussets is known in the art and therefore will not be described here. During the turnover, the web edge 8b is folded first, followed by the web edge 8a, so that the edge 8a remains visible after the hose is formed. It is also conceivable, however, that first the edge 8a and then the edge 8b is folded. In the plan view of the just formed tube 9 it is noticeable that the perforation section 2b is visible, since this is introduced into the wall now above. The adhesive surface 7 is now located on this wall at the top. However, since it is inside the tube and is not visible in the top view, it is shown in dotted lines in FIG. The perforation section 2a is now also not visible, since the surface 5 in which it is introduced, now covered by the surfaces 6a and 6b, so that the portion 2a is also shown dotted. From Figure 2 it is clear that advantageously the extent of the adhesive surface 7 in the transport direction x is at most equal to the difference of the positions of the sections 2a and 2b. In this way, the adhesive surface is limited to the region of the tab 10, which is apparent in Figures 3 and 4.
Die Figur 3 zeigt den Schlauch 9, nach dem er zu Schlauchabschnitten vereinzelt worden ist. Diese Vereinzelung erfolgt in der Regel dadurch, dass der Schlauch durch einen ersten Walzenspalt geführt wird. Die Walzen eines weiteren Walzenspaltes, der in Transportrichtung folgt und mit mindestens einer Schlauchabschnittslänge von dem ersten Walzenspalt entfernt ist, werden mit höherer Geschwindigkeit als die Walzen des ersten Walzenspaltes angetrieben. Erfassen die Walzen des weiteren Walzenspaltes das voraus laufende Ende des Schlauches 9, so reißt dieser entlang der Schwächungslinie oder Perforation 2. Nach der Vereinzelung wird des voraus laufende Ende des Schlauchabschnitts, welches zumindest aus einer Verlängerung unteren Fläche 5 besteht, umgefaltet und auf der oberen Wand, die die Flächen 6a und 6b umfasst, fixiert.FIG. 3 shows the tube 9, after which it has been singulated into tube sections. This separation is usually carried out in that the tube is passed through a first nip. The rollers of a further nip following in the transport direction and having at least one length of hose section away from the first nip are driven at a higher speed than the rollers of the first nip. If the rollers of the further nip detect the leading end of the tube 9, this tears along the weakening line or perforation 2. After singling, the leading end of the tube section, which consists of at least one lower surface extension 5, is folded over and on the upper one Wall, which includes the surfaces 6a and 6b, fixed.
Die Falzkanten 3 bilden nun die Längsseiten des Beutels 11. Die Projektion des Perforationsabschnitts 2a der Fläche 5 und der Perforationsabschnitt 2b begrenzen nun die Lasche 10, auf dessen Innenseite die Klebemittelfläche 7 nun angeordnet ist. Die Figur 4 zeigt den gleichen Beutel wie die Figur 3, lediglich um die Längsachse gewendet, so dass die Unterseite sichtbar ist.The folding edges 3 now form the longitudinal sides of the bag 11. The projection of the perforation section 2a of the surface 5 and the perforation section 2b now delimit the tab 10, on the inside of which the adhesive surface 7 is now arranged. FIG. 4 shows the same bag as FIG. 3, only turned around the longitudinal axis, so that the lower side is visible.
Die Figur 5 zeigt schematisch eine erfindungsgemäße Beutelmaschine 20. Das bahnförmige Papiermaterial 21 befindet sich auf einer Rolle gewickelt in der Abwickelstation 22 und wird von dort über Umlenkwalzen 23 in die nicht näher dargestellte Perforationsstation 24 geführt.FIG. 5 schematically shows a bagging machine 20 according to the invention. The sheet-like paper material 21 is wound on a roll in the unwinding station 22 and is guided from there via deflection rollers 23 into the perforation station 24 (not shown).
Von dort gelangt das bahnförmige Material auf eine Gegenwalze 25. Diese Walze dient als Gegenlage für die Etikettierstation 26. In dieser Station befindet sich eine Rolle 27 mit einem Band, auf welches einzelne Etiketten aufgebracht sind, die beidseitig klebend sind. Dieses Band wird taktweise von der Rolle 27 abgerollt. In jedem Takt wird ein einzelnes Etikett zu einem vorausberechneten Zeitpunkt auf das bahnförmige Papiermaterial 1 aufgebracht. Zum Andrücken des Etiketts dient hierbei das Andrückelement 29, welches in der dargestellten Ausführungsform walzenartig ausgebildet ist. Das Band, welches nun keine Etiketten mehr trägt, wird anschließend auf der Rolle 28 aufgewickelt und kann von dort entsorgt werden. Das wie beschrieben mit Etiketten versehene bahnförmige Papiermaterial gelangt anschließend in die nicht näher gezeigte Schlauchbildungsstation 30 und danach in weitere Stationen zu Herstellung der Beutel. Die Rollen und Walzen der Etikettierstation 26 sind vorzugsweise unabhängig von der übrigen Maschine antreibbar. Der Antrieb wird allerdings vorzugsweise von der Steuerung der Beutelmaschine gesteuert. Ein separater Geber für den Antrieb ist jedoch auch denkbar.From there, the web-shaped material passes onto a counter-roller 25. This roller serves as a counter-position for the labeling station 26. In this station there is a roller 27 with a band, on which individual labels are applied, which are adhesive on both sides. This tape is unrolled cyclically from the roll 27. In each cycle, a single label is applied to the sheet-like paper material 1 at a predicted time. For pressing the label in this case serves the pressing member 29, which is formed like a roll in the illustrated embodiment. The tape, which now carries no more labels, is then wound up on the roll 28 and can be disposed of there. The sheet-like paper material provided with labels as described then passes into the hose forming station 30 (not shown in detail) and then into further stations for the production of the bags. The rollers and rollers of the labeling station 26 are preferably drivable independently of the rest of the machine. However, the drive is preferably controlled by the control of the bag machine. However, a separate encoder for the drive is also conceivable.
Die Etikettierstation kann als optionaler Aufsatz vorgesehen sein, der sich auf die Seitenwände des Maschinengestells der Beutelmaschine aufsetzen lässt. The labeling station can be provided as an optional attachment, which can be placed on the side walls of the machine frame of the bag machine.

Claims

Vorrichtung und Verfahren zur Herstellung eines Beutels aus Papier sowie PapierbeutelPatentansprüche Apparatus and method for producing a bag of paper and paper bagpatent claims
1. Beutelmaschine zur Herstellung von Beuteln aus Papiermatehal, umfassend:A bag maker for making paper matehal bags comprising:
- eine Abwickeleinrichtung zur Abwicklung und Zuführung eines Bahnmateri- als aus Papier in einer Transportrichtung (x),an unwinding device for unwinding and feeding a web material from paper in a transport direction (x),
- eine Vorrichtung zur Erzeugung von Schwächungslinien, die einen Verlauf aufweisen, bei dem Teile dieser Schwächungslinien in der Richtung (x) zueinander versetzt sind, so dass sich eine erste Wand des fertigen Beutels in zumindest einer Lasche fortsetzt, die über die zweite Wand hinaus reicht,- An apparatus for generating lines of weakness, having a course in which parts of these lines of weakness in the direction (x) are offset from each other, so that a first wall of the finished bag continues in at least one tab, which extends beyond the second wall .
- eine Schlauchbildungseinrichtung zur Bildung eines Schlauches, in der die Seitenbereiche der Bahn unter Ausbildung eines Überlappungsbereiches umschlagbar und miteinander verbindbar sind,a hose forming device for forming a hose in which the side regions of the web can be folded over and joined to form an overlapping region,
- eine Trenneinrichtung zur Abtrennung von Schlauchabschnitten entlang der Schwächungslinien von dem Schlauch,a separating device for separating tube sections along the lines of weakness of the tube,
- eine Bodenbildungseinrichtung, in welcher Bereiche des voraus laufenden Endes des Schlauchabschnitts umfaltbar und auf einer Außenwandung des Schlauchabschnitts befestigbar ist, dadurch gekennzeichnet, dass eine Einrichtung zur Aufbringung von Klebemittelflächen auf das Papiermaterial vorgesehen ist, mit welcher jeweils eine Klebemittelfläche auf einen Bereich des Papiermaterials aufbringbar ist, welcher beim fertigen Beutel die der zweiten Wand zugewandte Seite der Lasche darstellt. - A bottoming device, in which areas of the leading end of the hose portion foldable and attachable to an outer wall of the hose portion, characterized in that means for applying adhesive surfaces is provided on the paper material, with each of which an adhesive surface on a portion of the paper material can be applied is, which represents the second wall facing side of the tab in the finished bag.
2. Beutelmaschine nach Anspruch 1 dadurch gekennzeichnet, dass bei der Herstellung von Seitenfaltenbeuteln die Klebemittelfläche mittels der Einrichtung zur Aufbringung von Klebemittelflächen auf den Bereich der Lasche aufbringbar ist, welcher nicht durch die Seitenfalten bedeckt ist.2. bag machine according to claim 1, characterized in that in the production of gusseted bags, the adhesive surface is applied by means of the device for applying adhesive surfaces on the region of the tab, which is not covered by the gussets.
3. Beutelmaschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Einrichtung zur Aufbringung der Klebemittelfläche der Schlauchbildungseinrichtung vorgeordnet ist.3. bag machine according to one of the preceding claims, characterized in that the means for applying the adhesive surface of the tube forming device is arranged upstream.
4. Beutelmaschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Einrichtung zur Aufbringung der Klebemittelfläche der Vorrichtung zur Erzeugung von Schwächungslinien nachgeordnet ist.4. bagging machine according to one of the preceding claims, characterized in that the means for applying the adhesive surface of the device for generating lines of weakness downstream.
5. Beutelmaschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Einrichtung zur Aufbringung der Klebemittelflächen im Bereich der Längs- klebeeinrichtung, welche der Schlauchbildungseinrichtung vorgeordnet ist, angeordnet ist.5. bag machine according to one of the preceding claims, characterized in that the means for applying the adhesive surfaces in the region of the longitudinal adhesive device, which is arranged upstream of the tube forming device, is arranged.
6. Beutelmaschine nach einem der beiden vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Einrichtung zur Aufbringung der Klebemittelfläche mit dem Schneid- und/oder Perforationswerkzeug der Vorrichtung zur Erzeugung von Schwächungslinien synchronisiert ist.6. bagging machine according to one of the two preceding claims, characterized in that the means for applying the adhesive surface is synchronized with the cutting and / or perforating tool of the device for generating lines of weakness.
7. Beutelmaschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Klebemittelflächen aus einem beidseitig klebenden Materialstücken bestehen, dessen eine Seite mit einem Deckblatt abgedeckt ist. 7. Bagging machine according to one of the preceding claims, characterized in that the adhesive surfaces consist of a double-sided adhesive pieces of material whose one side is covered with a cover sheet.
8. Beutelmaschine nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass die Einrichtung zur Aufbringung von Klebern ittelflächen quer zur Transportrichtung des Bahnmaterials oder der Beutel verschiebbar ist.8. bag machine according to the preceding claim, characterized in that the means for applying adhesive ittelflächen transversely to the transport direction of the web material or the bag is displaceable.
9. Beutelmaschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Einrichtung zur Aufbringung von Klebemittelflächen eine Abrolleinrichtung umfasst, in welche eine Rolle mit einem Band, auf welches Klebemitteletiketten aufgebracht sind, einsetzbar ist.9. bagging machine according to one of the preceding claims, characterized in that the means for applying adhesive surfaces comprises a unwinding, in which a roll with a tape on which adhesive labels are applied, can be used.
10. Verfahren zur Herstellung von Beuteln aus Papiermaterial, bei mindestens den folgenden Schritten:10. A method for making bags of paper material, at least the following steps:
- Abwicklung eines Bahnmaterials aus Papier und Zuführung dieses Materials in einer Transportrichtung (x),Processing a web material of paper and feeding this material in a transport direction (x),
- Einprägen von Schwächungslinien, die einen Verlauf aufweisen, bei dem Teile dieser Schwächungslinien in der Richtung (x) zueinander versetzt sind, so dass sich eine erste Wand des fertigen Beutels in zumindest einer Lasche fortsetzt, die über die zweite Wand hinaus reicht,Imprinting weakening lines having a course in which parts of these weakening lines are offset from one another in the direction (x) so that a first wall of the finished bag continues in at least one tab which extends beyond the second wall,
- Bilden eines Schlauches, wobei die Seitenbereiche der Bahn unter Ausbildung eines Überlappungsbereiches umgeschlagen und miteinander verbunden werden,Forming a tube, whereby the side regions of the web are folded over and joined to form an overlapping region,
- Abtrennen von Schlauchabschnitten entlang der Schwächungslinien von dem Schlauch,Separating tube sections along the lines of weakness of the tube,
- Bilden eines Bodens, wobei das voraus laufende Ende des Schlauchabschnitts umgefaltet und auf einer Außenwandung des Schlauchabschnitts befestigt wird, dadurch gekennzeichnet, dass- Forming a bottom, wherein the leading end of the hose portion is folded over and fastened on an outer wall of the hose portion, characterized in that
Klebemittelflächen auf das Papiermaterial aufgebracht werden, wobei jeweils eine Klebemittelfläche auf einen Bereich des Papiermaterials aufgebracht wird, welcher beim fertigen Beutel die der anderen Wandung zugewandte Seite der Lasche darstellt. Adhesive surfaces are applied to the paper material, wherein in each case an adhesive surface is applied to a region of the paper material, which represents the side facing the other wall of the tab in the finished bag.
11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass bei der Herstellung von Seitenfaltenbeuteln die Klebern ittelfläche auf den Bereich der Lasche aufgebracht, welcher nicht durch die Seitenfalten bedeckt ist. 11. The method according to claim 10, characterized in that applied in the production of gusseted bags, the adhesive ittelfläche on the region of the tab, which is not covered by the gussets.
EP08850953.4A 2007-11-14 2008-11-13 Apparatus for, and method of, producing a bag from paper Active EP2209613B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007054714.7A DE102007054714B4 (en) 2007-11-14 2007-11-14 Apparatus and method for making a bag of paper and paper bags
PCT/EP2008/065491 WO2009063015A2 (en) 2007-11-14 2008-11-13 Apparatus for, and method of, producing a bag from paper, and paper bag

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EP2209613A2 true EP2209613A2 (en) 2010-07-28
EP2209613B1 EP2209613B1 (en) 2015-10-21

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EP (1) EP2209613B1 (en)
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DE102021204369A1 (en) 2020-11-27 2022-06-02 Windmöller & Hölscher Kg Bag, method and apparatus for making a bag

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Also Published As

Publication number Publication date
US9802378B2 (en) 2017-10-31
EP2209613B1 (en) 2015-10-21
WO2009063015A3 (en) 2009-07-02
DE102007054714B4 (en) 2016-09-22
US20140274636A1 (en) 2014-09-18
US20100311557A1 (en) 2010-12-09
WO2009063015A2 (en) 2009-05-22
DE102007054714A1 (en) 2009-05-28

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