EP1106506B1 - Method and device for making bags having 3 sealed edges with a closing profile sealed inside them - Google Patents

Method and device for making bags having 3 sealed edges with a closing profile sealed inside them Download PDF

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Publication number
EP1106506B1
EP1106506B1 EP00811102A EP00811102A EP1106506B1 EP 1106506 B1 EP1106506 B1 EP 1106506B1 EP 00811102 A EP00811102 A EP 00811102A EP 00811102 A EP00811102 A EP 00811102A EP 1106506 B1 EP1106506 B1 EP 1106506B1
Authority
EP
European Patent Office
Prior art keywords
foil
closing profile
sealing
profile sections
feed unit
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.)
Expired - Lifetime
Application number
EP00811102A
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German (de)
French (fr)
Other versions
EP1106506A1 (en
Inventor
Rico Kunz
Thomas Strasser
Ernst Wanner
Horst Loewenthal
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.)
Syntegon Packaging Systems AG
Original Assignee
SIG Pack Systems AG
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Publication date
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Publication of EP1106506A1 publication Critical patent/EP1106506A1/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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/188—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating profile-strips, e.g. for reclosable bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • 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
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/067—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it the web advancing continuously
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S493/00—Manufacturing container or tube from paper; or other manufacturing from a sheet or web
    • Y10S493/916—Pliable container
    • Y10S493/927—Reclosable

Definitions

  • EP-A-939 034 is another device for the production known from 3-sealed-edge bags. It is about a horizontal flow wrapper.
  • the zipper is considered continuous continuous band between longitudinal edges of a continuous peeled, welded to the products folded film and at the same time the film is welded at the free edges.
  • transverse sealing station transverse sealing seams are formed and the individual bags separated.
  • the present invention is based on the object, a method and to provide a device of the above type, with which the packaging speed can be increased. This task is achieved by the feature combination of claims 1 and 4.
  • the device according to FIGS. 1 and 2 has a first supply 10 for a thermoplastic packaging film 11 or a composite film and a second supply 12 for a closure profile 13 (Zipper).
  • the film 11 is in a folding station 14 via a Faltkante in a known manner to the at regular intervals in likewise known manner supplied products 15 to a flat, horizontal tube 16 folded.
  • the folding station 14 is in Figures 1 and 2 in the transport direction A of the tube sixteenth drawn very shortened.
  • the supply 10 can also contain an already folded hose.
  • the tube 16 is continuously from the supply with a first feed unit 17 10 deducted.
  • the unit 17 consists of two pairs of transport rollers 18, 19 and 20, 21.
  • Each roller 18-21 consists of two coaxial, on the same shaft 25, 26 mounted single rollers 18a, 18b, 20a, 20b. At least one of the rollers 18, 20 of each pair is driven by a servomotor 27, 28.
  • the single roles 18a, 20a capture the film along its free edges 29.
  • the single rollers 18b, 20b have a circumferential groove accordingly half the cross-sectional profile of the closure profile 13.
  • the motors 27, 28 are connected to rotation angle sensors 31.
  • the motors 27, 28 and angle sensor 31 are connected to a control device 32.
  • the closure profile 13 is formed by a second feed unit 37 deducted from the stock 12.
  • the unit 37 comprises a pair of transport rollers 38, that of a servomotor 39 with angle sensor 40 is driven, which also with the control device 32nd are connected.
  • the rollers 38 have a circumferential groove 41 accordingly the groove 30.
  • Downstream of the rollers 38 is a separator 42 for separating the closure profile 13 in closure profile pieces 43 adjustable length arranged.
  • the device 42 consists of a rotating knife 44, that by a another servo motor 45 is driven with angle sensor 46. This are also connected to the device 32.
  • the knife 44 works with a rotating or stationary counterhold 47 together.
  • the profile pieces 43 are from the unit 37 between the two Foil spaced from but adjacent to the edges 29 fed.
  • Between the two pairs of rollers 18, 19 and 20, 21 are two longitudinal sealing stations 50, 51, for forming a longitudinal sealing seam 49 and for double-sided sealing of the film 11 on the Profile pieces 43 arranged.
  • the stations 50, 51 each consist of a pair of continuously at least almost contiguous, heated sealing jaws 52, 53. These can be used on the Foil 11 facing side to be coated with PTFE.
  • the foil 11 is continuously through the pair of rollers 20, 21 between the Bake 50, 51 pulled through.
  • the rollers 20, 21 can be cooled his. They then ensure rapid cooling of the sealed seams.
  • a transverse sealing station 56 Downstream of the roller pair 20, 21 is a transverse sealing station 56 arranged. It consists of two circulating on oval tracks 57 Quersiegelbacken 58, 59.
  • the jaws 58, 59 may be a Separating device consisting of a knife 60 and a counter-holder 61 be integrated. The type of guidance of the jaws 58, 59 is known in the art.
  • This knife is the Hose 16 divided into individual bags 66.
  • a sensor 62 may be arranged which is also connected to the controller 32 is.
  • the sensor 62 may, for example, a force sensor or a Be a way sensor.
  • the device described operates as follows:
  • the Film 11 is withdrawn continuously from the unit 17.
  • the Unit 37 also transports the profile 13 continuously.
  • the sensor 62 responds, releases its signal through the device 32, delayed by an adjustable, with the angle sensor 31 measured rotation angle, a rotation of the blade 44th by 360 °, with the peripheral speed of the cutting edge the feed rate of the profile 13 corresponds with the the withdrawal speed of the film 16 is synchronized.
  • the engine 39 slows down the device 32 the engine 39 in the short term and then accelerates him back to the sync speed. To this Way, a distance x between the leading end 63 of the Profile piece 43 and the trailing end 64 of the preceding Profile piece 43 formed.
  • This distance x corresponds to the Width b of the transverse sealing jaws 61 or is slightly larger.
  • the transverse sealing seams 65 are only in this gap between two successive profile pieces 43 formed. This will be a perfect seal and good tightness achieved. Because of the continuous deduction is a high packaging performance achieved.
  • the command to trigger the separation movement by the knife 44th also derived exclusively from the rotation angle of the pair of rollers 18, 19 which is measured by the sensor 31.
  • the type of control described becomes an exact positioning the closure profile pieces 43 between the transverse seams 65 is reached.
  • the device 37 can also be used to retrofit existing Tubular bag packaging machines are used. The device is particularly suitable for horizontal tubular bag packaging machines.
  • FIG. 3 shows a section of a variant of the embodiment according to Figures 1 and 2.
  • the rollers 38th and the supply 12 in the vertical median plane through the sealing jaws 53 arranged.
  • the variant of Figure 3 is the vertical plane through the rollers 38, the knife 44 and the stock in contrast, arranged at an acute angle to this median plane.
  • the cut closure profile pieces 43 are fed by a bent guide rail 70 to the rollers 18b, 19b.
  • This variant may have advantages in feeding the products 15 between the folded film 11 have.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Package Closures (AREA)
  • Basic Packing Technique (AREA)

Abstract

A packaging foil is continuously withdrawn from a supply. The foil is folded around the products to be packaged. Cut-off lengths of closing profile sections are inserted with a feed unit between the two longitudinal edges of the foil. In a sealing station, the two longitudinal edges of the foil are sealed together and the foil is then sealed onto the closing profile sections. In another sealing station, transverse sealing seams are formed between the free ends of successive closing profile sections and the tube is cut approximately in the center of the transverse seams. A high packaging output is achieved as a result of the continuous withdrawal of the foil.

Description

Aus der EP-B-667 288 ist ein Verfahren und eine Vorrichtung zur Herstellung von 3-Siegelrandbeuteln mit eingeschweisstem Verschlussprofil bekannt. Von einem Vorrat wird eine Verpackungsfolie schrittweise abgezogen und um einen Kragen zu einem zylindrischen, nach unten laufenden Schlauch geformt. Benachbart den beiden sich überlappenden Längsrändern der Folie werden Verschlussprofilstücke zwischen die Folienränder zugeführt und mit den Folien durch taktweise gegen die Folien bewegte Siegelbacken versiegelt. Das zu verpackende Produkt wird portionenweise von oben durch den Kragen hindurch eingefüllt. Anschliessend wird die so gebildete Packung mit einer Quersiegelnaht durch taktweise arbeitende Siegelbacken versiegelt und die Packung abgetrennt. Danach erfolgt ein Vorschubschritt, worauf der nächste Schlauchabschnitt gefüllt wird. Die Verschlussprofilstücke sind annähernd so lang wie der innere Abstand zwischen den Quersiegelnähten. Eine ähnliche derartige Vorrichtung ist in der WO 99/20529 beschrieben, die ebenfalls schrittweise arbeitet.From EP-B-667 288 a method and an apparatus for the Production of 3-sealed edge bags with welded-in closure profile known. From a supply is a packaging film stripped gradually and around a collar to a cylindrical, shaped downgoing hose. Adjacent to the both overlapping longitudinal edges of the film become closure profile pieces fed between the film edges and with the films by moving clockwise against the slides moving sealing jaws sealed. The product to be packaged is portioned by filled in at the top through the collar. Then it will the thus formed pack with a transverse seal by intermittent working sealing jaws sealed and the pack separated. This is followed by a feed step, whereupon the next Hose section is filled. The closure profile pieces are almost as long as the inner distance between the transverse sealing seams. A similar such device is in WO 99/20529, which also works step by step.

Aus der EP-A-939 034 ist eine weitere Vorrichtung zur Herstellung von 3-Siegelrandbeuteln bekannt. Es handelt sich um eine horizontale Schlauchbeutelmaschine. Der Zipper wird als kontinuierlich durchgehendes Band zwischen Längsränder einer kontinuierlich abgezogenen, um die Produkte gefalteten Folie eingeschweisst und zugleich wird an den freien Kanten die Folie verschweisst. In einer Quersiegelstation werden Quersiegelnähte gebildet und die Einzelbeutel abgetrennt. From EP-A-939 034 is another device for the production known from 3-sealed-edge bags. It is about a horizontal flow wrapper. The zipper is considered continuous continuous band between longitudinal edges of a continuous peeled, welded to the products folded film and at the same time the film is welded at the free edges. In a transverse sealing station transverse sealing seams are formed and the individual bags separated.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der obigen Art anzugeben, mit denen die Verpackungsgeschwindigkeit erhöht werden kann. Diese Aufgabe wird durch die Merkmalskombination der Ansprüche 1 und 4 gelöst.The present invention is based on the object, a method and to provide a device of the above type, with which the packaging speed can be increased. This task is achieved by the feature combination of claims 1 and 4.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung erläutert. Darin zeigt:

Figur 1
eine Seitenansicht einer erfindungsgemässen Vorrichtung,
Figur 2
eine Draufsicht, und
Figur 3
eine Variante der Ausführungsform nach Figuren 1 und 2.
Hereinafter, an embodiment of the invention will be explained with reference to the drawing. It shows:
FIG. 1
a side view of an inventive device,
FIG. 2
a plan view, and
FIG. 3
a variant of the embodiment of Figures 1 and 2.

Die Vorrichtung nach Figuren 1 und 2 hat einen ersten Vorrat 10 für eine thermoplastische Verpackungsfolie 11 oder eine Verbundfolie und einen zweiten Vorrat 12 für ein Verschlussprofil 13 (Zipper). Die Folie 11 wird in einer Faltstation 14 über eine Faltkante in bekannter Weise um die in regelmässigen Abständen in ebenfalls bekannter Weise zugeführten Produkte 15 zu einem flachen, horizontalen Schlauch 16 gefaltet. Die Faltstation 14 ist in Figuren 1 und 2 in Transportrichtung A des Schlauches 16 stark verkürzt gezeichnet. Alternativ kann der Vorrat 10 auch einen bereits gefalteten Schlauch enthalten. Der Schlauch 16 wird mit einer ersten Vorschubeinheit 17 kontinuierlich vom Vorrat 10 abgezogen. Die Einheit 17 besteht aus zwei Transportrollenpaaren 18, 19 bzw. 20, 21. Jede Rolle 18-21 besteht aus zwei koaxialen, auf der gleichen Welle 25, 26 montierten Einzelrollen 18a, 18b, 20a, 20b. Mindestens eine der Rollen 18, 20 jedes Paares ist durch einen Servomotor 27, 28 angetrieben. Die Einzelrollen 18a, 20a erfassen die Folie entlang deren freien Kanten 29. Die Einzelrollen 18b, 20b haben eine Umfangsnut entsprechend dem halben Querschnittsprofil des Verschlussprofils 13. Die Motoren 27, 28 sind mit Drehwinkelfühlern 31 verbunden. Für die Vorschubeinheit 17 kann alternativ auch nur ein einziger Motor 27 vorgesehen sein, der beide Rollenpaare 18, 19, 20, und 21 synchron antreibt. Die Motoren 27, 28 und Winkelfühler 31 sind mit einer Steuereinrichtung 32 verbunden.The device according to FIGS. 1 and 2 has a first supply 10 for a thermoplastic packaging film 11 or a composite film and a second supply 12 for a closure profile 13 (Zipper). The film 11 is in a folding station 14 via a Faltkante in a known manner to the at regular intervals in likewise known manner supplied products 15 to a flat, horizontal tube 16 folded. The folding station 14 is in Figures 1 and 2 in the transport direction A of the tube sixteenth drawn very shortened. Alternatively, the supply 10 can also contain an already folded hose. The tube 16 is continuously from the supply with a first feed unit 17 10 deducted. The unit 17 consists of two pairs of transport rollers 18, 19 and 20, 21. Each roller 18-21 consists of two coaxial, on the same shaft 25, 26 mounted single rollers 18a, 18b, 20a, 20b. At least one of the rollers 18, 20 of each pair is driven by a servomotor 27, 28. The single roles 18a, 20a capture the film along its free edges 29. The single rollers 18b, 20b have a circumferential groove accordingly half the cross-sectional profile of the closure profile 13. The motors 27, 28 are connected to rotation angle sensors 31. For the Feed unit 17 may alternatively also only a single motor 27 be provided, the two pairs of rollers 18, 19, 20, and 21st drives synchronously. The motors 27, 28 and angle sensor 31 are connected to a control device 32.

Das Verschlussprofil 13 wird durch eine zweite Vorschubeinheit 37 vom Vorrat 12 abgezogen. Die Einheit 37 umfasst ein Transportrollenpaar 38, das von einem Servomotor 39 mit Winkelfühler 40 angetrieben ist, die ebenfalls mit der Steuereinrichtung 32 verbunden sind. Die Rollen 38 haben eine Umfangsnut 41 entsprechend der Nut 30. Stromabwärts der Rollen 38 ist eine Trenneinrichtung 42 zum Trennen des Verschlussprofils 13 in Verschlussprofilstücke 43 einstellbarer Länge angeordnet. Die Einrichtung 42 besteht aus einem umlaufenden Messer 44, dass durch einen weiteren Servomotor 45 mit Winkelfühler 46 angetrieben ist. Diese sind ebenfalls mit der Einrichtung 32 verbunden. Das Messer 44 arbeitet mit einem umlaufenden oder stationären Gegenhalter 47 zusammen.The closure profile 13 is formed by a second feed unit 37 deducted from the stock 12. The unit 37 comprises a pair of transport rollers 38, that of a servomotor 39 with angle sensor 40 is driven, which also with the control device 32nd are connected. The rollers 38 have a circumferential groove 41 accordingly the groove 30. Downstream of the rollers 38 is a separator 42 for separating the closure profile 13 in closure profile pieces 43 adjustable length arranged. The device 42 consists of a rotating knife 44, that by a another servo motor 45 is driven with angle sensor 46. This are also connected to the device 32. The knife 44 works with a rotating or stationary counterhold 47 together.

Die Profilstücke 43 werden von der Einheit 37 zwischen die beiden Folien beabstandet von aber benachbart den Kanten 29 zugeführt. Zwischen den beiden Rollenpaaren 18, 19 bzw. 20, 21 sind zwei Längs-Siegelstationen 50, 51, zur Bildung einer Längssiegelnaht 49 und zum beidseitigen Aufsiegeln der Folie 11 auf die Profilstücke 43 angeordnet. Die Stationen 50, 51 bestehen aus je einem Paar von kontinuierlich zumindest beinahe aneinanderliegenden, beheizten Siegelbacken 52, 53. Diese können auf der der Folie 11 zugewandten Seite mit PTFE beschichtet sein. Die Folie 11 wird durch das Rollenpaar 20, 21 kontinuierlich zwischen den Backen 50, 51 durchgezogen. Die Rollen 20, 21 können gekühlt sein. Sie sorgen dann für ein rasches Abkühlen der Siegelnähte.The profile pieces 43 are from the unit 37 between the two Foil spaced from but adjacent to the edges 29 fed. Between the two pairs of rollers 18, 19 and 20, 21 are two longitudinal sealing stations 50, 51, for forming a longitudinal sealing seam 49 and for double-sided sealing of the film 11 on the Profile pieces 43 arranged. The stations 50, 51 each consist of a pair of continuously at least almost contiguous, heated sealing jaws 52, 53. These can be used on the Foil 11 facing side to be coated with PTFE. The foil 11 is continuously through the pair of rollers 20, 21 between the Bake 50, 51 pulled through. The rollers 20, 21 can be cooled his. They then ensure rapid cooling of the sealed seams.

Stromabwärts des Rollenpaares 20, 21 ist eine Quersiegelstation 56 angeordnet. Sie besteht aus zwei auf ovalen Bahnen 57 umlaufenden Quersiegelbacken 58, 59. In die Backen 58, 59 kann eine Trenneinrichtung bestehend aus einem Messer 60 und einem Gegenhalter 61 integriert sein. Die Art der Führung der Backen 58, 59 ist im Stand der Technik bekannt. Durch dieses Messer wird der Schlauch 16 in Einzelbeutel 66 unterteilt.Downstream of the roller pair 20, 21 is a transverse sealing station 56 arranged. It consists of two circulating on oval tracks 57 Quersiegelbacken 58, 59. In the jaws 58, 59 may be a Separating device consisting of a knife 60 and a counter-holder 61 be integrated. The type of guidance of the jaws 58, 59 is known in the art. This knife is the Hose 16 divided into individual bags 66.

Bei einer der Rollen 18, 19 kann noch ein Fühler 62 angeordnet werden, der ebenfalls mit der Steuereinrichtung 32 verbunden ist. Der Fühler 62 kann zum Beispiel ein Kraftfühler oder ein Wegfühler sein. Wenn das vorlaufende Ende 63 eines Profilstücks 43 zwischen den Rollen 18b, 19b erfasst wird, werden diese nämlich leicht auseinandergerückt zum Erzeugen der nötigen Anpresskraft der Folie auf das Profilstück 43. Diese erhöhte Anpresskraft oder die dadurch bedingte Verschiebung wird mit dem Fühler 62 erfasst.In one of the rollers 18, 19, a sensor 62 may be arranged which is also connected to the controller 32 is. The sensor 62 may, for example, a force sensor or a Be a way sensor. When the leading end 63 of a profile piece 43 is detected between the rollers 18b, 19b, they are namely slightly moved apart to generate the necessary contact force the film on the profile piece 43. This increased contact pressure or the resulting shift is done with the probe 62 recorded.

Im Betrieb arbeitet die beschriebene Vorrichtung wie folgt: Die Folie 11 wird von der Einheit 17 kontinuierlich abgezogen. Die Einheit 37 transportiert das Profil 13 ebenfalls kontinuierlich. Wenn der Fühler 62 anspricht, löst dessen Signal über die Einrichtung 32, verzögert durch einen einstellbaren, mit dem Winkelfühler 31 gemessenen Drehwinkel, eine Drehung des Messers 44 um 360° aus, wobei die Umlaufgeschwindigkeit der Schnittkante der Vorschubgeschwindigkeit des Profils 13 entspricht, die mit der Abzugsgeschwindigkeit der Folie 16 synchronisiert ist. Sobald der Trennschnitt ausgeführt ist, verlangsamt die Einrichtung 32 den Motor 39 kurzfristig und beschleunigt ihn anschliessend wieder auf die Synchron-Geschwindigkeit. Auf diese Weise wird ein Abstand x zwischen dem vorlaufenden Ende 63 des Profilstücks 43 und dem nachlaufenden Ende 64 des vorangegangenen Profilstücks 43 gebildet. Dieser Abstand x entspricht der Breite b der Quersiegelbacken 61 oder ist geringfügig grösser. Die Quersiegelnähte 65 werden nur in dieser Lücke zwischen zwei aufeinanderfolgenden Profilstücken 43 gebildet. Dadurch wird eine einwandfreie Versiegelung und eine gute Dichtheit erzielt. Wegen des kontinuierlichen Abzugs wird eine hohe Verpackungsleistung erzielt. In operation, the device described operates as follows: The Film 11 is withdrawn continuously from the unit 17. The Unit 37 also transports the profile 13 continuously. When the sensor 62 responds, releases its signal through the device 32, delayed by an adjustable, with the angle sensor 31 measured rotation angle, a rotation of the blade 44th by 360 °, with the peripheral speed of the cutting edge the feed rate of the profile 13 corresponds with the the withdrawal speed of the film 16 is synchronized. As soon as the separating cut is executed slows down the device 32 the engine 39 in the short term and then accelerates him back to the sync speed. To this Way, a distance x between the leading end 63 of the Profile piece 43 and the trailing end 64 of the preceding Profile piece 43 formed. This distance x corresponds to the Width b of the transverse sealing jaws 61 or is slightly larger. The transverse sealing seams 65 are only in this gap between two successive profile pieces 43 formed. This will be a perfect seal and good tightness achieved. Because of the continuous deduction is a high packaging performance achieved.

Alternativ zur Auslösung des Messers 44 durch den Fühler 62 kann der Befehl zum Auslösen der Trennbewegung durch das Messer 44 auch ausschliesslich vom Drehwinkel des Rollenpaares 18, 19 abgeleitet werden, der mit dem Fühler 31 gemessen wird. Durch die beschriebene Art der Steuerung wird eine exakte Positionierung der Verschlussprofilstücke 43 zwischen den Quernähten 65 erreicht. Die Einrichtung 37 kann auch zum Nachrüsten bestehender Schlauchbeutel-Verpackungsmaschinen eingesetzt werden. Die Vorrichtung eignet sich vor allem für Horizontal-Schlauchbeutel-Verpackungsmaschinen.Alternatively to the triggering of the knife 44 by the sensor 62 can the command to trigger the separation movement by the knife 44th also derived exclusively from the rotation angle of the pair of rollers 18, 19 which is measured by the sensor 31. By the The type of control described becomes an exact positioning the closure profile pieces 43 between the transverse seams 65 is reached. The device 37 can also be used to retrofit existing Tubular bag packaging machines are used. The device is particularly suitable for horizontal tubular bag packaging machines.

Figur 3 zeigt einen Ausschnitt einer Variante der Ausführungsform nach Figuren 1 und 2. In Figuren 1 und 2 sind die Rollen 38 und der Vorrat 12 in der vertikalen Mittelebene durch die Siegelbacken 53 angeordnet. Bei der Variante nach Figur 3 ist die vertikale Ebene durch die Rollen 38, das Messer 44 und den Vorrat dagegen unter einem spitzen Winkel zu dieser Mittelebene angeordnet. Die abgeschnittenen Verschlussprofilstücke 43 werden durch eine abgebogene Führungsschiene 70 den Rollen 18b, 19b zugeführt. Diese Variante kann Vorteile bei der Zuführung der Produkte 15 zwischen die gefaltete Folie 11 haben.FIG. 3 shows a section of a variant of the embodiment according to Figures 1 and 2. In Figures 1 and 2, the rollers 38th and the supply 12 in the vertical median plane through the sealing jaws 53 arranged. In the variant of Figure 3 is the vertical plane through the rollers 38, the knife 44 and the stock in contrast, arranged at an acute angle to this median plane. The cut closure profile pieces 43 are fed by a bent guide rail 70 to the rollers 18b, 19b. This variant may have advantages in feeding the products 15 between the folded film 11 have.

Claims (10)

  1. A method for producing bags (66) with three sealed edges and a sealed-in closing section, wherein a packaging foil (11) is withdrawn continuously from a first supply (10) by means of a first feed unit (17) and is folded around the products (15) to be packaged, whereby cut-off lengths of closing profile sections (43) are inserted between the two longitudinal edge regions of the foil (11) by means of a second feed unit (37) adjacent but at a distance to its longitudinal edges (29), whereby successive closing profile sections (43) are spaced apart, whereby the two longitudinal edge regions of the foil (11) are subsequently sealed next to their edges (29) to form a longitudinal sealing seam (49) and the foil (11) is sealed on both sides onto the closing profile sections, and whereby a traverse seal using transverse sealing device (56) to effect transverse sealing of successive closing profile sections (43) is made and the individual bags (66) are separated from each other.
  2. A method according to claim 1, further comprising a separating device (44) for cutting off the closing profile sections (43) from a continuously supplied closing profile section (13) and whereby the second feed unit (37) is slowed after each separating operation and subsequently accelerated to the withdrawing speed of the foil (11).
  3. A method according to one of claims 1 or 2, wherein the first feed direction of the tube (16) is horizontal.
  4. A device for producing bags (66) with three sealed edges and a sealed-in closing section, comprising
    a first supply (10) of a packaging foil (11);
    a first feed unit (17) for withdrawing the foil (11) using a continuously driven first motor (27, 28);
    a folding station (14) for forming a flat tube (16) for reception of the products (15) to be packaged, the tube (16) being open on one side,
    a second feed unit (37) having a second motor (39) for supplying cut-off lengths of closing profile sections (43) between the two longitudinal edge regions of the foil (11);
    a first sealing station (51) having two first sealing jaws (53) that are continuously at least approximately abutting each other for sealing the closing profile sections (43) with free edges (29) of the foil (11),
    a second sealing station (50) with continuously at least approximately abutting second sealing jaws (52) for longitudinal sealing of the two foil edge regions being adjacent to the free edges (29) but outside of the closing profile sections (43),
    a third sealing station (56) for forming transverse seams (65) between the free ends of successive closing profile sections (43); and
    a separating device (60) that cuts the tube (16) transversely at least approximately in the center of the transverse seams (65), wherein at least a portion (20, 21) of the first feed unit (17) is arranged downstream of the first and second sealing stations (50, 51).
  5. A device according to claim 4, further comprising a control device (32) for controlling the second feed unit (37), wherein the second feed unit (37) has a second separating device (44) having a third motor (45) for cutting off the closing profile sections (43) from a continuously supplied closing profile (13), and wherein the first and third motors (27, 45) are respectively each connected to a rotary sensor (31, 46) connected to the control device (32).
  6. A device according to claim 5, wherein the first feed unit (17) further comprises a pair of drive rollers (18, 19) located upstream of the first and second sealing device (50, 51) and wherein further a sensor (62) connected to the control device (32) is arranged that senses when the leading end (63) of the closing profile section (43) is gripped by the drive roller pair (18, 29).
  7. A device according to claim 5 or 6, wherein the third motor (45) is driven with a timed operation by the control device (32) when the angel of rotation of the first motor (27) has reached a predetermined value or in response to the sensor (62).
  8. A device according to one of claims 5 to 7, wherein the second motor (39) is briefly delayed as soon as a closing profile section (43) is cut off and is then subsequently accelerated again to the transporting speed of the tube (16).
  9. A device according to one of claims 5 to 8, wherein the second separating device (44) is formed as a blade which rotates around a shaft and operates jointly with a counter part (47).
  10. A device according to one of claims 4 to 9, wherein the first sealing jaws (53) have a depression in the sealing surface that corresponds to a geometry of the closing profile section.
EP00811102A 1999-12-03 2000-11-21 Method and device for making bags having 3 sealed edges with a closing profile sealed inside them Expired - Lifetime EP1106506B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH221799 1999-12-03
CH221799 1999-12-03

Publications (2)

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EP1106506A1 EP1106506A1 (en) 2001-06-13
EP1106506B1 true EP1106506B1 (en) 2004-03-17

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Application Number Title Priority Date Filing Date
EP00811102A Expired - Lifetime EP1106506B1 (en) 1999-12-03 2000-11-21 Method and device for making bags having 3 sealed edges with a closing profile sealed inside them

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US (1) US6675552B2 (en)
EP (1) EP1106506B1 (en)
JP (1) JP2001198993A (en)
AT (1) ATE261847T1 (en)
CA (1) CA2327213C (en)
DE (1) DE50005674D1 (en)
DK (1) DK1106506T3 (en)

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Publication number Publication date
JP2001198993A (en) 2001-07-24
US6675552B2 (en) 2004-01-13
ATE261847T1 (en) 2004-04-15
CA2327213C (en) 2008-08-05
EP1106506A1 (en) 2001-06-13
CA2327213A1 (en) 2001-06-03
DE50005674D1 (en) 2004-04-22
US20010003115A1 (en) 2001-06-07
DK1106506T3 (en) 2004-07-12

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