EP1106506A1 - 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 PDFInfo
- Publication number
- EP1106506A1 EP1106506A1 EP00811102A EP00811102A EP1106506A1 EP 1106506 A1 EP1106506 A1 EP 1106506A1 EP 00811102 A EP00811102 A EP 00811102A EP 00811102 A EP00811102 A EP 00811102A EP 1106506 A1 EP1106506 A1 EP 1106506A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing
- closure profile
- film
- sealed
- 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.)
- Granted
Links
Images
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-B-667 288 describes a method and an apparatus for Manufacture of 3 sealed edge bags with welded closure profile known.
- a packaging film is taken from a stock gradually withdrawn and around a collar to a cylindrical, molded downward hose. Adjacent to the Two overlapping longitudinal edges of the film become closure profile pieces fed between the film edges and with the foils by sealing jaws moved against the foils in cycles sealed.
- the product to be packaged is portion by portion Filled through the top of the collar. Then will the package thus formed with a transverse sealing seam by clockwise working sealing jaws sealed and the package separated. Then there is a feed step, followed by the next Hose section is filled.
- the closure profile pieces are approximately as long as the inner distance between the cross seal seams.
- a similar device of this type is described in WO 99/20529, which also works step by step.
- a further device for the production is known from 3-sealed edge bags. It is about a horizontal form, fill and seal machine.
- the zipper is considered continuous continuous band between longitudinal edges of a continuous peeled off film wrapped around the products and at the same time the film is welded to the free edges.
- Cross seal seams are formed in a cross sealing station and separated the individual bags.
- the object of the present invention is a method and to provide a device of the above type with which the packaging speed can be increased. This task is solved by the combination of features 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 Fold edge in a known manner around the at regular intervals Products 15 supplied in a likewise known manner to one flat, horizontal tube 16 folded.
- the folding station 14 is in Figures 1 and 2 in the transport direction A of the hose 16th drawn very shortened.
- the stock 10 can also contain an already folded hose.
- the hose 16 is continuously with a first feed unit 17 from the supply 10 deducted.
- the unit 17 consists of two pairs of transport rollers 18, 19 and 20, 21.
- Each roll 18-21 consists of two coaxial single rollers mounted on the same shaft 25, 26 18a, 18b, 20a, 20b. At least one of the rollers 18, 20 of each pair is driven by a servo motor 27, 28. The single roles 18a, 20a grip the film along its free edges 29. The individual 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.
- feed unit 17 can also be a single motor 27 may be provided, the two pairs of rollers 18, 19, 20, and 21st drives synchronously.
- the motors 27, 28 and angle sensors 31 are connected to a control device 32.
- the closure profile 13 is by a second feed unit 37 deducted from stock 12.
- the unit 37 comprises a pair of transport rollers 38 by a servo motor 39 with an angle sensor 40 is driven, which also with the control device 32nd are connected.
- the rollers 38 have a circumferential groove 41 accordingly groove 30.
- Downstream of rollers 38 is a separator 42 for separating the closure profile 13 into closure profile pieces 43 adjustable length arranged.
- the facility 42 consists of a rotating knife 44 that by a another servo motor 45 is driven with an angle sensor 46. This are also connected to the device 32.
- the knife 44 works with a rotating or stationary counterholder 47 together.
- the profile pieces 43 are from the unit 37 between the two Foils spaced from but adjacent edges 29 fed.
- Between the two pairs of rollers 18, 19 and 20, 21 are two longitudinal sealing stations 50, 51, to form a longitudinal sealing seam 49 and for sealing the film 11 on both sides onto the Profile pieces 43 arranged.
- the stations 50, 51 consist of each a pair of continuously at least almost contiguous, heated sealing jaws 52, 53. These can on the Film 11 facing side be coated with PTFE.
- the foil 11 is continuously between the Jaws 50, 51 pulled through.
- the rollers 20, 21 can be cooled his. They then ensure that the sealed seams cool down quickly.
- a cross sealing station 56 Downstream of the pair of rollers 20, 21 is a cross sealing station 56 arranged. It consists of two circulating on oval tracks 57 Cross sealing jaws 58, 59. One can be placed in the jaws 58, 59 Separating device consisting of a knife 60 and a counter holder 61 be integrated. The way of guiding the jaws 58, 59 is known in the art. With this knife the Hose 16 divided into individual bags 66.
- a sensor 62 can also be arranged on one of the rollers 18, 19 are also connected to the control device 32 is.
- the sensor 62 can be, for example, a force sensor or a Be path sensors. If the leading end 63 of a profile piece 43 between the rollers 18b, 19b, these are namely slightly moved apart to generate the necessary contact pressure the film on the profile piece 43. This increased contact pressure or the resulting shift is with the feeler 62 recorded.
- the device described works as follows:
- the Slide 11 is continuously withdrawn from unit 17.
- the Unit 37 also transports the profile 13 continuously.
- the sensor 62 responds, its signal triggers via the device 32, delayed by an adjustable, with the angle sensor 31 measured angle of rotation, one rotation of the knife 44 by 360 °, with the rotational speed of the cutting edge the feed rate of the profile 13 corresponds to that with the pull-off speed of the film 16 is synchronized.
- the motor 39 briefly and then accelerates it back to the synchronous speed. To this A distance x between the leading end 63 of the Profile piece 43 and the trailing end 64 of the previous one 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 make one perfect sealing and good tightness achieved. Because of the continuous deduction, high packaging performance achieved.
- the command to initiate the separation movement by the knife 44 also derived exclusively from the angle of rotation of the pair of rollers 18, 19 be measured with the sensor 31.
- the device 37 can also be used to retrofit existing ones Tubular bag packaging machines are used.
- the device is particularly suitable for horizontal tubular bag packaging machines.
- Figure 3 shows a section of a variant of the embodiment according to FIGS. 1 and 2.
- the rollers 38 and the supply 12 in the vertical median plane through the sealing jaws 53 arranged. 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 to the rollers 18b, 19b by a bent guide rail 70.
- This variant can have advantages when feeding the products 15 have between the folded film 11.
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
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.EP-B-667 288 describes a method and an apparatus for Manufacture of 3 sealed edge bags with welded closure profile known. A packaging film is taken from a stock gradually withdrawn and around a collar to a cylindrical, molded downward hose. Adjacent to the Two overlapping longitudinal edges of the film become closure profile pieces fed between the film edges and with the foils by sealing jaws moved against the foils in cycles sealed. The product to be packaged is portion by portion Filled through the top of the collar. Then will the package thus formed with a transverse sealing seam by clockwise working sealing jaws sealed and the package separated. Then there is a feed step, followed by the next Hose section is filled. The closure profile pieces are approximately as long as the inner distance between the cross seal seams. A similar device of this type is described 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 a further device for the production is known from 3-sealed edge bags. It is about a horizontal form, fill and seal machine. The zipper is considered continuous continuous band between longitudinal edges of a continuous peeled off film wrapped around the products and at the same time the film is welded to the free edges. Cross seal seams are formed in a cross sealing station and separated the individual bags.
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 object of the present invention is a method
and to provide a device of the above type with which
the packaging speed can be increased. This task
is solved by the combination of features of
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.
- Figure 1
- a side view of a device according to the invention,
- Figure 2
- a top view, and
- Figure 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
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
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
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 pair of
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.A
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 works as follows: The
Slide 11 is continuously withdrawn from
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.As an alternative to triggering the
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.Figure 3 shows a section of a variant of the embodiment
according to FIGS. 1 and 2. In FIGS. 1 and 2, the
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH221799 | 1999-12-03 | ||
CH221799 | 1999-12-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1106506A1 true EP1106506A1 (en) | 2001-06-13 |
EP1106506B1 EP1106506B1 (en) | 2004-03-17 |
Family
ID=4228598
Family Applications (1)
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 |
Country Status (7)
Country | Link |
---|---|
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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- 2000-11-21 AT AT00811102T patent/ATE261847T1/en not_active IP Right Cessation
- 2000-11-21 DE DE50005674T patent/DE50005674D1/en not_active Expired - Lifetime
- 2000-12-01 US US09/726,456 patent/US6675552B2/en not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
---|---|
DE50005674D1 (en) | 2004-04-22 |
DK1106506T3 (en) | 2004-07-12 |
JP2001198993A (en) | 2001-07-24 |
ATE261847T1 (en) | 2004-04-15 |
EP1106506B1 (en) | 2004-03-17 |
US6675552B2 (en) | 2004-01-13 |
CA2327213A1 (en) | 2001-06-03 |
CA2327213C (en) | 2008-08-05 |
US20010003115A1 (en) | 2001-06-07 |
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