EP0957045A1 - Packaging sheet with integral opening- and reclosing system - Google Patents

Packaging sheet with integral opening- and reclosing system Download PDF

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Publication number
EP0957045A1
EP0957045A1 EP98810434A EP98810434A EP0957045A1 EP 0957045 A1 EP0957045 A1 EP 0957045A1 EP 98810434 A EP98810434 A EP 98810434A EP 98810434 A EP98810434 A EP 98810434A EP 0957045 A1 EP0957045 A1 EP 0957045A1
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EP
European Patent Office
Prior art keywords
film
packaging
perforation
adhesive
opening
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
EP98810434A
Other languages
German (de)
French (fr)
Other versions
EP0957045B1 (en
Inventor
Markus D. Bevilacqua
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
Alusuisse Lonza Services Ltd
Alusuisse Technology and Management Ltd
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 Alcan Technology and Management Ltd, Alusuisse Lonza Services Ltd, Alusuisse Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP19980810434 priority Critical patent/EP0957045B1/en
Priority to DE59805411T priority patent/DE59805411D1/en
Priority to CA 2270572 priority patent/CA2270572A1/en
Publication of EP0957045A1 publication Critical patent/EP0957045A1/en
Application granted granted Critical
Publication of EP0957045B1 publication Critical patent/EP0957045B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5855—Peelable seals

Definitions

  • the invention relates to a packaging film with an integrated system for lightweight Open and reclose one using the packaging film manufactured packaging container.
  • a packaging container as well as a method and a device for the production of the packaging film.
  • Known pouch packaging have an opening mechanism in the Shape of a tear notch. Bags are reclosed, for example using a sealed zipper or one of the packaging attached adhesive label.
  • the systems mentioned for easy opening and reclosing work separately and are usually attached to the bag filling machine. In the case of Zipper sealing systems for expensive additional investments that each individual operator a bag filling machine if necessary.
  • the invention is therefore based on the object of a packaging film to create the type mentioned, in which the opening and reclosing mechanism already during the production or finishing of the packaging film can be built into this.
  • the packaging film leads to the achievement of the object according to the invention
  • two outside the area of the opening and reclosing system comprises films connected to one another by means of a permanent adhesive, wherein an inner film a first perforation as an opening and an outer film one second perforation to form a closure flap covering the first perforation has, and wherein between the two films in the area of Sealing flap an adhesive is arranged.
  • the packaging film according to the invention with an integrated opening and reclosing system offers the advantage over known systems that no further measures during the later production and filling of the bags required to provide an opening and reclosing system are. In addition to the aforementioned loss of additional investments For example, productivity can be increased on bag packaging machines.
  • a first opening guarantee can be achieved if the outer film only partially severed along the first perforation and / or the first Perforation is not continuous over the entire thickness of the outer film.
  • the sealing flap can be an adhesive-free zone as a gripping and tearing aid exhibit.
  • the inner film consists of a sealable plastic, in particular from an optionally modified polyolefin such as polyethylene or polypropylene, their copolymers or ionomer.
  • the outer film can be a monofilm or a composite film, in particular a laminate with an outer partial film made of oriented polyethylene terephthalate (PET) or oriented polypropylene (oPP) and an inner partial film made of oriented polyamide or aluminum.
  • PET polyethylene terephthalate
  • oPP oriented polypropylene
  • PSA pressure sensitive adhesive
  • the packaging film according to the invention is particularly suitable for production of bag packaging, the packaging film being sealed against another film or after folding against yourself into a bag is shaped.
  • the packaging film can also be used as a lid on the edge sealed or glued to a rigid or semi-rigid container be.
  • a bag packaging 10 shown in FIG. 1 has a front wall film 12-- hereinafter called packaging film - and a backing film 14 on the are connected to one another via a circumferential sealing seam 16.
  • the packaging film 12 used in the front wall is an opening and reclosing system 18 with a locking tab 20 for reclosing an opening 22 arranged.
  • the reclosability of the opening 22 is by means of a pressure sensitive adhesive applied to the back of the sealing flap 20 24 reached.
  • the packaging film 12 is made of an inner film 28 from, for example, polyethylene, polypropylene, their copolymers or ionomer and an outer film 30 composed.
  • the outer film 30 is in the present case a composite with an outer partial film 30a, for example oriented polyethylene terephthalate (PET) or oriented polypropylene (oPP) and an inner partial film 30b of, for example, oriented Polyamide or aluminum.
  • the inner film 28 has a first perforation 32 to form the later one Provide opening 22.
  • a second perforation 34 in the outer film 30 arranged to form the closure tab 20.
  • This second perforation 34 is partly to provide a first opening guarantee with bridges or Provide webs 36, d. H. with places where the foil is not is completely severed.
  • Such bridges or webs 36 can of course also be provided on the first perforation 32.
  • the bridges or webs 36 can be perforated in this way that the film is not continuously separated over its thickness.
  • a permanent adhesive 38 based on, for example Arranged polyurethane.
  • This permanent adhesive 38 extends with one exception the area of the opening and reclosing system 18 to the entire film surface.
  • the outer film 30 and the inner film 28 is located on the back the sealing tab 20 attached pressure sensitive adhesive 24, for example in the Form of an acrylic adhesive or other self-adhesive resin.
  • the packaging film 12 is the one shown in FIG. 1 Bag packaging 10 to form the circumferential sealing seam 16 against the Back wall film 14 sealed.
  • the back wall film 14 shows in the present example a structure identical to the packaging film 12, namely one inner film 40 made of, for example, polyethylene, polypropylene, their copolymers or ionomer over the permanent adhesive 38 made of, for example, polyurethane is glued to the outer film 42.
  • the outer film 42 also exists here from an outer partial film 42a made of, for example, oriented polyethylene terephthalate (PET) or oriented polypropylene (oPP) and an inner Partial film 42b made of, for example, oriented polyamide or aluminum.
  • PET polyethylene terephthalate
  • oPP oriented polypropylene
  • the Backing film 14 can also have a different layer structure.
  • the opening and closing mechanism of the opening and reclosing system 18 is briefly explained below with reference to FIG. 5.
  • the foils shown in FIGS. 2 to 4 are in the form of foil strips continuous production of the composite film 12 before.
  • a system shown in FIGS. 6 and 7 for the continuous production of a Packaging film 12 with integrated opening and reclosing system 18 has a first adhesive application station 44 with an adhesive application roller 46 for the partial application of the permanent adhesive 38 on the tape in the form outer film 30 on.
  • the first adhesive application station 44 in the tape running direction a second adhesive application station 48 with a Adhesive application roller 50 for partial application of the pressure sensitive adhesive 24.
  • the second perforations 34 in cut the outer film 30.
  • the cutting of the perforations 32, 34 in the Cutting stations 54, 56 can be made by means of mechanical knives or without contact for example using a laser cutting device.
  • the films 28, 30 pre-assembled in this way are processed in a laminating station 60 to form the packaging film 12 with an integrated opening and reclosing system 18 merged and glued together.
  • the one from the Laminating station 60 emerging packaging film 12 subsequently becomes a Roll 62 wound.
  • the two foils 28, 30 are brought together in a precise manner in the laminating station 60 the cutting operations in the cutting stations 54, 56 as well as the tape running speeds of the two foils 28, 30 accordingly controlled.
  • This control can, for example, in a known manner via printed marks attached to the edge of the film strips.
  • the packaging film produced according to the method described above 12 can be used in a known manner for the production of packaging bags to be processed further.
  • the packaging film 12 with an integrated opening and closing system 18, depending on the later use, in different Molds are produced, for example as a film strip with two or more parallel bag units, which after the laminating station 60 into individual Units are separated.
  • FIG. 8 and 9 show a variant of a bag packaging 10, which with respect the film structure and the opening and reclosing system shown in Fig. 1 to 5 shown bag packaging corresponds.
  • the same reference numerals For the same or comparable Parts are therefore used the same reference numerals.
  • Packaging film 12 and back wall film 14 are in this Case over the folded end of the bag package 10 in one piece.
  • the opening 22 which is intended to form the opening to put first perforation 32 in the folding area, which makes it easy to remove the Filled goods made possible by the head or foot end of the bag packaging 10.
  • the contingent relationships between the Pressure sensitive adhesive 24 and the inner and outer foils 28, 30 such that - in Contrary to the bag packaging shown in Fig. 1 - by pulling on the sealing flap 20 of the pressure-sensitive adhesive 24 adhere to the inner film 28 remains.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)

Abstract

The packaging film (12) comprises two films connected by a permanent adhesive (38) away from the opening and reclosure system (18). The inner film (28) has a first perforation (32) forming an opening (22) and an outer film (30) has a second perforation (34) forming a closure flap (20) covering the first perforation. A semi-permanent adhesive (24) between both films under the closure flap hold the latter closed. Independent claims are made for: a) a packaging container using the packaging film; b) a process for the continuous manufacture of a packaging film with an integrated system for opening and reclosure of a package using the film (12) in which the outer film (30) is coated with both the permanent (38) and semi-permanent (24) adhesives, the second and first perforations are cut in both films and these are joined together; b) process equipment for manufacturing the packaging film with first and second coating stations for applying the permanent and semi-permanent adhesives onto the outer film, two cutting stations for producing both sets of perforations in the appropriate films, a coating station for joining both films together to form the film and a process control unit. The second perforations preferably do not penetrate through the entire thickness of the outer film. The closure flap (20) is free of adhesive and forms a gripping and tear-off aid.

Description

Die Erfindung betrifft eine Verpackungsfolie mit integriertem System zum leichten Öffnen und Wiederverschliessen eines unter Verwendung der Verpackungsfolie hergestellten Verpackungsbehälters. Im Rahmen der Erfindung liegt auch ein Verpackungsbehälter sowie ein Verfahren und eine Vorrichtung zur Herstellung der Verpackungsfolie.The invention relates to a packaging film with an integrated system for lightweight Open and reclose one using the packaging film manufactured packaging container. Within the scope of the invention there is also a packaging container as well as a method and a device for the production of the packaging film.

Bekannte Beutelverpackungen weisen einen Öffnungsmechanismus in der Form einer Einreisskerbe auf. Das Wiederverschliessen von Beuteln erfolgt beispielsweise mittels eines eingesiegelten Zippers oder über eine der Verpackung beigefügte Haftetikette. Die erwähnten Systeme zum leichten Öffnen und Wiederverschliessen funktionieren getrennt voneinander und werden üblicherweise auf der Beutelabfüllmaschine angebracht. Dies führt beispielsweise im Fall von Zippereinsiegelanlagen zu teuren Zusatzinvestitionen, die jeder einzelne Betreiber einer Beutelabfüllmaschine im Bedarfsfall tätigen muss.Known pouch packaging have an opening mechanism in the Shape of a tear notch. Bags are reclosed, for example using a sealed zipper or one of the packaging attached adhesive label. The systems mentioned for easy opening and reclosing work separately and are usually attached to the bag filling machine. In the case of Zipper sealing systems for expensive additional investments that each individual operator a bag filling machine if necessary.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Verpackungsfolie der eingangs genannten Art zu schaffen, bei welcher der Öffnungs- und Wiederverschliessmechanismus bereits bei der Herstellung bzw. Veredelung der Verpackungsfolie in diese eingebaut werden kann.The invention is therefore based on the object of a packaging film to create the type mentioned, in which the opening and reclosing mechanism already during the production or finishing of the packaging film can be built into this.

Zur erfindungsgemässen Lösung der Aufgabe führt, dass die Verpackungsfolie zwei ausserhalb des Bereichs des Öffnungs- und Wiederverschliesssystems über einen Permanentkleber miteinander verbundene Folien umfasst, wobei eine innere Folie eine erste Perforation als Öffnung und eine äussere Folie eine zweite Perforation zur Bildung einer die erste Perforation überdeckenden Verschliesslasche aufweist, und wobei zwischen den beiden Folien im Bereich der Verschliesslasche ein Haftkleber angeordnet ist.The packaging film leads to the achievement of the object according to the invention two outside the area of the opening and reclosing system comprises films connected to one another by means of a permanent adhesive, wherein an inner film a first perforation as an opening and an outer film one second perforation to form a closure flap covering the first perforation has, and wherein between the two films in the area of Sealing flap an adhesive is arranged.

Die erfindungsgemässe Verpackungsfolie mit integriertem Öffnungs- und Wiederverschliesssystem bietet gegenüber bekannten Systemen den Vorteil, dass bei der späteren Herstellung und Befüllung der Beutel keine weiteren Massnahmen zur Bereitstellung eines Öffnungs- und Wiederverschliesssystems erforderlich sind. Neben dem bereits erwähnten Wegfall zusätzlicher Investitionen lässt sich beispielsweise die Produktivität auf Beutelabpackmaschinen erhöhen.The packaging film according to the invention with an integrated opening and reclosing system offers the advantage over known systems that no further measures during the later production and filling of the bags required to provide an opening and reclosing system are. In addition to the aforementioned loss of additional investments For example, productivity can be increased on bag packaging machines.

Eine Erstöffnungsgarantie kann dadurch erreicht werden, dass die äussere Folie entlang der ersten Perforation nur teilweise durchtrennt und/oder die erste Perforation nicht über die gesamte Dicke der äusseren Folie durchgehend ist.A first opening guarantee can be achieved if the outer film only partially severed along the first perforation and / or the first Perforation is not continuous over the entire thickness of the outer film.

Die Verschliesslasche kann eine kleberfreie Zone als Greif- und Aufreisshilfe aufweisen.The sealing flap can be an adhesive-free zone as a gripping and tearing aid exhibit.

Bei einer bevorzugten Ausführungsform der erfindungsgemässen Verpackungsfolie besteht die innere Folie aus einem siegelbaren Kunststoff, insbesondere aus einem gegebenenfalls modifizierten Polyolefin wie Polyethylen oder Polypropylen, deren Copolymere oder lonomer.In a preferred embodiment of the packaging film according to the invention the inner film consists of a sealable plastic, in particular from an optionally modified polyolefin such as polyethylene or polypropylene, their copolymers or ionomer.

Die äussere Folie kann eine Monofolie oder eine Verbundfolie sein, insbesondere ein Laminat mit einer äusseren Teilfolie aus orientiertem Polyethylenterephtalat (PET) oder orientiertem Polypropylen (oPP) und einer inneren Teilfolie aus orientiertem Polyamid oder Aluminium.The outer film can be a monofilm or a composite film, in particular a laminate with an outer partial film made of oriented polyethylene terephthalate (PET) or oriented polypropylene (oPP) and an inner partial film made of oriented polyamide or aluminum.

Als Permanentkleber wird bevorzugt ein Kleber auf der Basis von Polyurethan eingesetzt. Ein geeigneter Selbsthaftkleber (PSA, pressure sensitive adhesive) ist auf der Basis von Polyacrylat oder anderen selbstklebenden Harzen aufgebaut.An adhesive based on polyurethane is preferred as the permanent adhesive used. A suitable pressure sensitive adhesive (PSA) is based on polyacrylate or other self-adhesive resins.

Die erfindungsgemässe Verpackungsfolie eignet sich insbesondere zur Herstellung von Beutelverpackungen, wobei die Verpackungsfolie durch Siegelung gegen eine weitere Folie oder nach Faltung gegen sich selbst zu einem Beutel geformt ist. Die Verpackungsfolie kann jedoch auch als Deckel auf den Rand eines starren oder halbstarren Behälters aufgesiegelt oder mit diesem verklebt sein.The packaging film according to the invention is particularly suitable for production of bag packaging, the packaging film being sealed against another film or after folding against yourself into a bag is shaped. The packaging film can also be used as a lid on the edge sealed or glued to a rigid or semi-rigid container be.

Ein bevorzugtes Verfahren zur kontinuierlichen Herstellung einer erfindungsgemässen Verbundfolie zeichnet sich dadurch aus, dass

  • die als Folienband vorliegende äussere Folie mit dem Permanentkleber und dem Haftkleber beschichtet wird,
  • in die mit den Klebern beschichtete äussere Folie die zweiten Perforationen zur Bildung der Verschliesslaschen geschnitten werden,
  • in die als Folienband vorliegende innere Folie die ersten Perforationen als Öffnungen geschnitten werden, und
  • die beiden Folien zur Verpackungsfolie in Form eines Folienbandes zusammengeführt und miteinander verklebt werden.
A preferred method for the continuous production of a composite film according to the invention is characterized in that
  • the outer film, which is present as a film strip, is coated with the permanent adhesive and the pressure sensitive adhesive,
  • the second perforations to form the sealing tabs are cut into the outer film coated with the adhesives,
  • the first perforations are cut as openings into the inner film present as a film strip, and
  • the two films are brought together to form a packaging film in the form of a film strip and glued together.

Eine geeignete Anlage zur kontinuierlichen Herstellung einer erfindungsgemässen Verbundfolie ist gekennzeichnet durch

  • eine erste Klebstoffauftragstation zum partiellen Auftragen des Permanentklebers auf die als Folienband vorliegende äussere Folie,
  • eine zweite Klebstoffauftragstation zum partiellen Auftragen des Haftklebers auf die äussere Folie,
  • eine erste Schneidstation zum Schneiden der zweiten Perforationen in die äussere Folie,
  • eine zweite Schneidstation zum Schneiden der ersten Perforationen in die als Folienband vorliegende innere Folie,
  • eine Kaschierstation zum Zusammenführen und Verkleben der beiden Folien zur Verpackungsfolie in Bandform, und
  • eine Steuereinheit zum Steuern der Schneidoperationen und der Bandlaufgeschwindigkeiten der beiden Folien zur gegenseitigen Ausrichtung vor deren Eintritt in die Kaschierstation.
A suitable system for the continuous production of a composite film according to the invention is characterized by
  • a first adhesive application station for the partial application of the permanent adhesive to the outer film present as a film strip,
  • a second adhesive application station for partial application of the pressure sensitive adhesive to the outer film,
  • a first cutting station for cutting the second perforations into the outer film,
  • a second cutting station for cutting the first perforations into the inner film present as a film strip,
  • a laminating station for merging and gluing the two films to form a packaging film in tape form, and
  • a control unit for controlling the cutting operations and the tape speeds of the two foils for mutual alignment before they enter the laminating station.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt schematisch in

  • Fig.1 eine Schrägsicht auf eine Beutelverpackung;
  • Fig.2 die Draufsicht auf einen Teil einer inneren Folie einer Verpackungsfolie im Bereich des Öffnungs- und Wiederverschliesssystems;
  • Fig. 3 die Draufsicht auf einen Teil einer äusseren Folie einer Verpackungsfolie im Bereich des Öffnungs- und Wiederverschliesssystems;
  • Fig. 4 die Draufsicht auf einen Teil einer Beutelverpackung mit einer aus der inneren und äusseren Folie der Figuren 2 und 3 zusammengesetzten Verpackungsfolie;
  • Fig. 5 einen Querschnitt durch die Beutelverpackung von Figur 4 entlang deren Linie I - I;
  • Fig. 6 einen Längsschnitt zu Herstellung einer Verpackungsfolie mit integriertem Öffnungs- und Wiederverschliesssystem;
  • Fig. 7 die Draufsicht auf die Anlage von Fig. 6;
  • Fig. 8 eine Schrägsicht auf eine andere Beutelverpackung;
  • Fig. 9 einen Querschnitt durch die Beutelverpackung von Fig. 8 entlang deren Linie II-II in verschlossenem Zustand.
Further advantages, features and details of the invention emerge from the following description of preferred exemplary embodiments and with reference to the drawing; this shows schematically in
  • 1 shows an oblique view of a bag packaging;
  • 2 shows the top view of part of an inner film of a packaging film in the region of the opening and reclosing system;
  • 3 shows the top view of part of an outer film of a packaging film in the region of the opening and reclosing system;
  • 4 shows the top view of part of a bag packaging with a packaging film composed of the inner and outer film of FIGS. 2 and 3;
  • 5 shows a cross section through the bag packaging of FIG. 4 along the line I - I thereof;
  • 6 shows a longitudinal section for producing a packaging film with an integrated opening and reclosing system;
  • Fig. 7 is a top view of the plant of Fig. 6;
  • 8 shows an oblique view of another bag packaging;
  • Fig. 9 shows a cross section through the bag packaging of Fig. 8 along the line II-II in the closed state.

Eine in Fig. 1 dargestellte Beutelverpackung 10 weist eine Vorderwandfolie 12-- im folgenden Verpackungsfolie genannt-- und eine Rückwandfolie 14 auf, die über eine umlaufende Siegelnaht 16 miteinander verbunden sind. In die als Vorderwand eingesetzte Verpackungsfolie 12 ist ein Öffnungs- und Wiederverschliesssystem 18 mit einer Verschliesslasche 20 zum Wiederverschliessen einer Öffnung 22 angeordnet. Die Wiederverschliessbarkeit der Öffnung 22 wird mittels eines auf die Rückseite der Verschliesslasche 20 aufgetragenen Haftklebers 24 erreicht. Als Greif- und Aufreisshilfe ist an der Verschliesslasche 20 eine kleberfreie Zone 26 vorgesehen.A bag packaging 10 shown in FIG. 1 has a front wall film 12-- hereinafter called packaging film - and a backing film 14 on the are connected to one another via a circumferential sealing seam 16. In the as The packaging film 12 used in the front wall is an opening and reclosing system 18 with a locking tab 20 for reclosing an opening 22 arranged. The reclosability of the opening 22 is by means of a pressure sensitive adhesive applied to the back of the sealing flap 20 24 reached. As a gripping and tearing aid, there is 20 on the locking tab an adhesive-free zone 26 is provided.

Wie in Fig. 2 bis 5 gezeigt, ist die Verpackungsfolie 12 aus einer inneren Folie 28 aus beispielsweise Polyethylen, Polypropylen, deren Copolymere oder lonomer und einer äusseren Folie 30 zusammengesetzt. Die äussere Folie 30 ist im vorliegenden Fall ein Verbund mit einer äusseren Teilfolie 30a aus beispielsweise orientiertem Polyethylenterephtalat (PET) oder orientiertem Polypropylen (oPP) und einer inneren Teilfolie 30b aus beispielsweise orientiertem Polyamid oder Aluminium.As shown in FIGS. 2 to 5, the packaging film 12 is made of an inner film 28 from, for example, polyethylene, polypropylene, their copolymers or ionomer and an outer film 30 composed. The outer film 30 is in the present case a composite with an outer partial film 30a, for example oriented polyethylene terephthalate (PET) or oriented polypropylene (oPP) and an inner partial film 30b of, for example, oriented Polyamide or aluminum.

Die innere Folie 28 ist mit einer ersten Perforation 32 zur Bildung der späteren Öffnung 22 versehen. In der äusseren Folie 30 ist eine zweite Perforation 34 zur Bildung der Verschliesslasche 20 angeordnet. Diese zweite Perforation 34 ist zur Bereitstellung einer Erstöffnungsgarantie teilweise mit Brücken beziehungsweise Stegen 36 versehen, d. h. mit Stellen, an denen die Folie nicht ganz durchgetrennt ist. Derartige Brücken oder Stege 36 können selbstverständlich auch an der ersten Perforation 32 vorgesehen sein. Als Alternative zu den Brücken beziehungsweise Stegen 36 kann die Perforation so durchgeführt werden, dass die Folie über ihre Dicke nicht durchgehend getrennt ist.The inner film 28 has a first perforation 32 to form the later one Provide opening 22. There is a second perforation 34 in the outer film 30 arranged to form the closure tab 20. This second perforation 34 is partly to provide a first opening guarantee with bridges or Provide webs 36, d. H. with places where the foil is not is completely severed. Such bridges or webs 36 can of course also be provided on the first perforation 32. As an alternative to The bridges or webs 36 can be perforated in this way that the film is not continuously separated over its thickness.

Wie insbesondere aus Fig. 5 hervorgeht, ist zwischen der inneren Folie 28 und der äusseren Folie 30 ein Permanentkleber 38 auf der Basis von beispielsweise Polyurethan angeordnet. Dieser Permanentkleber 38 erstreckt sich mit Ausnahme des Bereichs des Öffnungs- und Wiederverschliesssystems 18 auf die gesamte Folienfläche. Zwischen dem die Verschliesslasche 20 bildendem Teil der äusseren Folie 30 und der inneren Folie 28 befindet sich der an der Rückseite der Verschliesslasche 20 angebrachte Haftkleber 24, beispielsweise in der Form eines Acrylatklebers oder eines anderen selbstklebenden Harzes. Wie in Fig. 5 weiter gezeigt, ist die Verpackungsfolie 12 bei der in Fig. 1 gezeigten Beutelverpackung 10 unter Bildung der umlaufenden Siegelnaht 16 gegen die Rückwandfolie 14 gesiegelt. Die Rückwandfolie 14 zeigt im vorliegenden Beispiel einen mit der Verpackungsfolie 12 identischen Aufbau, nämlich eine innere Folie 40 aus beispielsweise Polyethylen, Polypropylen, deren Copolymere oder lonomer die über den Permanentkleber 38 aus beispielsweise Polyurethan mit der äusseren Folie 42 verklebt ist. Die äussere Folie 42 besteht auch hier aus einer äusseren Teilfolie 42a aus beispielsweise orientiertem Polyethylenterephtalat (PET) oder orientiertem Polypropylen (oPP) und einer inneren Teilfolie 42b aus beispielsweise orientiertem Polyamid oder Aluminium. Die Rückwandfolie 14 kann aber auch einen anderen Schichtaufbau haben.5, between the inner film 28 and the outer film 30, a permanent adhesive 38 based on, for example Arranged polyurethane. This permanent adhesive 38 extends with one exception the area of the opening and reclosing system 18 to the entire film surface. Between the part forming the closing tab 20 the outer film 30 and the inner film 28 is located on the back the sealing tab 20 attached pressure sensitive adhesive 24, for example in the Form of an acrylic adhesive or other self-adhesive resin. As in 5 further shown, the packaging film 12 is the one shown in FIG. 1 Bag packaging 10 to form the circumferential sealing seam 16 against the Back wall film 14 sealed. The back wall film 14 shows in the present example a structure identical to the packaging film 12, namely one inner film 40 made of, for example, polyethylene, polypropylene, their copolymers or ionomer over the permanent adhesive 38 made of, for example, polyurethane is glued to the outer film 42. The outer film 42 also exists here from an outer partial film 42a made of, for example, oriented polyethylene terephthalate (PET) or oriented polypropylene (oPP) and an inner Partial film 42b made of, for example, oriented polyamide or aluminum. The Backing film 14 can also have a different layer structure.

Der Öffnungs- und Verschliessmechanismus des Öffnungs- und Wiederverschliesssystems 18 wird nachstehend anhand der Fig. 5 kurz erläutert.The opening and closing mechanism of the opening and reclosing system 18 is briefly explained below with reference to FIG. 5.

Durch Ziehen an der Verschliesslasche 20 im Bereich der kleberfreien Zone 26 wird die Verbindung zwischen der äusseren Folie 30 und der inneren Folie 28 im Bereich der Verschliesslasche 20 getrennt, wobei der Haftkleber 24 im vorliegenden Fall an der Verschliesslasche 20 verbleibt. Bei vollständig zurückgezogener Verschliesslasche 20 wird die der Öffnung 22 dienende erste Perforation 32 freigelegt, d.h. der Beutel ist geöffnet. Beim Zurücklegen und leichten Anpressen der Verschliesslasche 20 haftet diese mittels des Haftklebers 24 wieder an der inneren Folie 28, so dass der Beutel wieder verschlossen ist.By pulling the sealing tab 20 in the area of the adhesive-free zone 26 becomes the connection between the outer film 30 and the inner film 28 separated in the area of the sealing flap 20, the pressure-sensitive adhesive 24 in the present case Case on the locking tab 20 remains. When fully withdrawn Sealing flap 20 becomes the first perforation serving the opening 22 32 exposed, i.e. the bag is open. When traveling and light Pressing the sealing tab 20 adheres by means of the adhesive 24 again on the inner film 28, so that the bag is closed again.

Die in Fig. 2 bis 4 dargestellten Folien liegen in der Form von Folienbändern zur kontinuierlichen Herstellung der Verbundfolie 12 vor.The foils shown in FIGS. 2 to 4 are in the form of foil strips continuous production of the composite film 12 before.

Eine in Fig. 6 und 7 dargestellte Anlage zur kontinuierlichen Fertigung einer Verpackungsfolie 12 mit integriertem Öffnungs- und Wiederverschliesssystem 18 weist eine erste Klebstoffauftragstation 44 mit einer Klebstoffautragwalze 46 zum partiellen Auftragen des Permanentklebers 38 auf der in Bandform vorliegenden äusseren Folie 30 auf. Der ersten Klebstoffauftragstation 44 in Bandlaufrichtung nachgeordnet ist eine zweite Klebstoffauftragstation 48 mit einer Klebstoffauftragwalze 50 zum partiellen Auftragen des Haftklebers 24. Nach der Beschichtung der äusseren Folie 30 mit den beiden Klebern 38, 24 wird die beschichtete äussere Folie 30 durch einen Trocknungsofen 52 geführt. In einer nachfolgenden ersten Schneidstation 54 werden die zweiten Perforationen 34 in die äussere Folie 30 geschnitten.A system shown in FIGS. 6 and 7 for the continuous production of a Packaging film 12 with integrated opening and reclosing system 18 has a first adhesive application station 44 with an adhesive application roller 46 for the partial application of the permanent adhesive 38 on the tape in the form outer film 30 on. The first adhesive application station 44 in the tape running direction a second adhesive application station 48 with a Adhesive application roller 50 for partial application of the pressure sensitive adhesive 24. After the Coating the outer film 30 with the two adhesives 38, 24 is the coated outer film 30 passed through a drying oven 52. In a subsequent first cutting station 54, the second perforations 34 in cut the outer film 30.

Die ebenfalls als Folienband vorliegende Folie 28 durchläuft eine zweite Schneidstation 56, in welcher zur Bildung der Öffnungen 22 die ersten Perforationen 32 geschnitten werden. Das Schneiden der Perforationen 32, 34 in den Schneidstationen 54, 56 kann mittels mechanischer Messer oder berührungslos beispielsweise über ein Laserschneidgerät erfolgen.The film 28, which is also present as a film strip, passes through a second Cutting station 56, in which the first perforations are used to form the openings 22 32 can be cut. The cutting of the perforations 32, 34 in the Cutting stations 54, 56 can be made by means of mechanical knives or without contact for example using a laser cutting device.

Die derart vorkonfektionierten Folien 28, 30 werden in einer Kaschierstation 60 unter Bildung der Verpackungsfolie 12 mit integriertem Öffnungs- und Wiederverschliesssystem 18 zusammengeführt und miteinander verklebt. Die aus der Kaschierstation 60 austretende Verpackungsfolie 12 wird nachfolgend zu einer Rolle 62 aufgewickelt.The films 28, 30 pre-assembled in this way are processed in a laminating station 60 to form the packaging film 12 with an integrated opening and reclosing system 18 merged and glued together. The one from the Laminating station 60 emerging packaging film 12 subsequently becomes a Roll 62 wound.

Da die beiden Folien 28, 30 in der Kaschierstation 60 passgenau zusammengeführt werden müssen, werden die Schneidoperationen in den Schneidstationen 54, 56 so wie die Bandlaufgeschwindigkeiten der beiden Folien 28, 30 entsprechend gesteuert. Diese Steuerung kann beispielsweise in bekannter Art über am Rand der Folienbänder angebrachte Druckmarken erfolgen.Since the two foils 28, 30 are brought together in a precise manner in the laminating station 60 the cutting operations in the cutting stations 54, 56 as well as the tape running speeds of the two foils 28, 30 accordingly controlled. This control can, for example, in a known manner via printed marks attached to the edge of the film strips.

Die gemäss dem vorstehenden beschriebenen Verfahren hergestellte Verpackungsfolie 12 kann in bekannter Weise zur Herstellung von Verpackungsbeuteln weiterverarbeitet werden.The packaging film produced according to the method described above 12 can be used in a known manner for the production of packaging bags to be processed further.

Die Verpackungsfolie 12 mit integriertem Öffnungs- und Wederverschliesssystem 18 kann, in Abhängigkeit von der späteren Verwendung, in verschiedenen Formen hergestellt werden, so beispielsweise als Folienband mit zwei oder mehr parallelen Beuteleinheiten, die nach der Kaschierstation 60 in einzelne Einheiten aufgetrennt werden.The packaging film 12 with an integrated opening and closing system 18, depending on the later use, in different Molds are produced, for example as a film strip with two or more parallel bag units, which after the laminating station 60 into individual Units are separated.

Fig. 8 und 9 zeigen eine Variante einer Beutelverpackung 10, die hinsichtlich des Folienaufbaus und des Öffnungs- und Wiederverschliesssystems der in Fig. 1 bis 5 dargestellten Beutelverpackung entspricht. Für gleiche oder vergleichbare Teile werden daher dieselben Bezugszeichen verwendet.8 and 9 show a variant of a bag packaging 10, which with respect the film structure and the opening and reclosing system shown in Fig. 1 to 5 shown bag packaging corresponds. For the same or comparable Parts are therefore used the same reference numerals.

Wie insbesondere aus Fig. 9 hervorgeht, kann während des Beutelherstellprozesses das Verpackungslaminat gefaltet und anschliessend gegen sich selbst gesiegelt werden. Verpackungsfolie 12 und Rückwandfolie 14 sind in diesem Fall über das gefaltete Ende der Beutelverpackung 10 einstückig. Auf diese Weise ist es möglich, die zur Bildung der späteren Öffnung 22 vorgesehene erste Perforation 32 in den Faltbereich zu legen, was die leichte Entnahme des Füllgutes durch das Kopf- oder Fussende der Beutelverpackung 10 ermöglicht. In dem in Fig. 8 gezeigten Beispiel sind die Haftungsverhältnisse zwischen dem Haftkleber 24 und den inneren und äusseren Folien 28, 30 derart, dass - im Gegensatz zu der in Fig. 1 dargestellten Beutelverpackung - durch Ziehen an der Verschliesslasche 20 der Haftkleber 24 an der inneren Folie 28 haften bleibt.As can be seen in particular from FIG. 9, during the bag manufacturing process folded the packaging laminate and then against yourself be sealed. Packaging film 12 and back wall film 14 are in this Case over the folded end of the bag package 10 in one piece. To this It is possible in this way to provide the opening 22 which is intended to form the opening to put first perforation 32 in the folding area, which makes it easy to remove the Filled goods made possible by the head or foot end of the bag packaging 10. In the example shown in Fig. 8, the contingent relationships between the Pressure sensitive adhesive 24 and the inner and outer foils 28, 30 such that - in Contrary to the bag packaging shown in Fig. 1 - by pulling on the sealing flap 20 of the pressure-sensitive adhesive 24 adhere to the inner film 28 remains.

Claims (11)

Verpackungsfolie mit integriertem System (18) zum leichten Öffnen und Wiederverschliessen eines unter Verwendung der Verpackungsfolie (12) hergestellten Verpackungsbehälters (10),
dadurch gekennzeichnet, dass
die Verpackungsfolie (12) zwei ausserhalb des Bereichs des Öffnungs- und Wiederverschliesssystems (18) über einen Permanentkleber (38) miteinander verbundene Folien (28, 30) umfasst, wobei eine innere Folie (28) eine erste Perforation (32) als Öffnung (22) und eine äussere Folie (30) eine zweite Perforation (34) zur Bildung einer die erste Perforation (32) überdeckenden Verschliesslasche (20) aufweist, und wobei zwischen den beiden Folien (28, 30) im Bereich der Verschliesslasche (20) ein Haftkleber (24) angeordnet ist.Packaging film with integrated system (18) for easy opening and reclosing of a packaging container (10) produced using the packaging film (12),
characterized in that
the packaging film (12) comprises two films (28, 30) connected to one another outside the region of the opening and reclosing system (18) by means of a permanent adhesive (38), an inner film (28) having a first perforation (32) as an opening (22 ) and an outer film (30) has a second perforation (34) to form a sealing flap (20) covering the first perforation (32), and a pressure sensitive adhesive between the two films (28, 30) in the area of the sealing flap (20) (24) is arranged. Verpackungsfolie nach Anspruch 1, dadurch gekennzeichnet, dass die äussere Folie (30) entlang der zweiten Perforation (34) nur teilweise durchtrennt und/oder die zweite Perforation (34) nicht über die gesamte Dicke der äusseren Folie (30) durchgehend ist.Packaging film according to claim 1, characterized in that the outer film (30) along the second perforation (34) only partially severed and / or the second perforation (34) not over the entire Thickness of the outer film (30) is continuous. Verpackungsfolie nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Verschliesslasche (20) eine kleberfreie Zone (26) als Greif- und Aufreisshilfe aufweist.Packaging film according to claim 1 or 2, characterized in that that the sealing flap (20) has an adhesive-free zone (26) as a gripping and Has tear aid. Verpackungsfolie nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die innere Folie (28) aus einem siegelbaren Kunststoff, insbesondere aus einem gegebenenfalls modifizierten Polyolefin wie Polyethylen oder Polypropylen, deren Copolymere oder lonomer besteht. Packaging film according to one of claims 1 to 3, characterized in that that the inner film (28) made of a sealable plastic, in particular from an optionally modified polyolefin such as Polyethylene or polypropylene, the copolymers or ionomer of which. Verpackungsfolie nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die äussere Folie (30) aus einer Verbundfolie , insbesondere aus einem Laminat mit einer äusseren Teilfolie (30a) aus orientiertem Polyethylenterephtalat (PET) oder orientiertem Polypropylen (oPP) und einer inneren Teilfolie (30b) aus orientiertem Polyamid oder Aluminium besteht.Packaging film according to one of claims 1 to 4, characterized in that that the outer film (30) from a composite film, in particular from a laminate with an outer partial film (30a) from oriented Polyethylene terephthalate (PET) or oriented polypropylene (oPP) and an inner partial film (30b) made of oriented polyamide or aluminum consists. Verpackungsfolie nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Permanentkleber (38) auf der Basis von Polyurethan aufgebaut und der Haftkleber ein Acrylatkleber oder ein anderes selbstklebendes Harz ist.Packaging film according to one of claims 1 to 5, characterized in that that the permanent adhesive (38) is based on polyurethane and the pressure sensitive adhesive is an acrylate adhesive or another self-adhesive Resin is. Verpackungsbehälter mit einer Verpackungsfolie nach einem der Ansprüche 1 bis 6.Packaging container with a packaging film according to one of the claims 1 to 6. Verpackungsbehälter nach Anspruch 7, dadurch gekennzeichnet, dass die Verpackungsfolie (12) durch Siegelung gegen eine weitere Folie (14) oder nach Faltung gegen sich selbst zu einem Beutel (10) geformt ist.Packaging container according to claim 7, characterized in that the packaging film (12) by sealing against another film (14) or is formed into a bag (10) after being folded against itself. Verpackungsbehälter nach Anspruch 7, dadurch gekennzeichnet, dass die Verpackungsfolie (12) als Deckel auf den Rand eines starren oder halbstarren Behälters aufgesiegelt oder mit diesem verklebt ist.Packaging container according to claim 7, characterized in that the packaging film (12) as a lid on the edge of a rigid or semi-rigid container is sealed or glued to it. Verfahren zur kontinuierlichen Herstellung einer Verpackungsfolie mit integriertem System (18) zum leichten Öffnen und Wiederverschliessen eines unter Verwendung der Verpackungsfolie (12) hergestellten Verpackungsbehälters (10), wobei die Verpackungsfolie (12) zwei ausserhalb des Bereichs des Öffnungs- und Wiederverschliesssystems (18) über einen Permanentkleber (38) miteinander verbundene Folien (28, 30) umfasst, wobei eine innere Folie (28) eine erste Perforation (32) als Öffnung (22) und eine äussere Folie (30) eine zweite Perforation (34) zur Bildung einer die erste Perforation (32) überdeckenden Verschliesslasche (20) aufweist, und wobei zwischen den beiden Folien (28, 30) im Bereich der Verschliesslasche (20) ein Haftkleber (24) angeordnet ist,
dadurch gekennzeichnet, dass die als Folienband vorliegende äussere Folie (30) mit dem Permanentkleber (38) und dem Haftkleber (24) beschichtet wird, in die mit den Klebern (38, 24) beschichtete äussere Folie (30) die zweiten Perforationen (34) zur Bildung der Verschliesslaschen (20) geschnitten werden, in die als Folienband vorliegende innere Folie (28) die ersten Perforationen (32) als Öffnungen (22) geschnitten werden, und die beiden Folien (28, 30) zur Verpackungsfolie (12) in Form eines Folienbandes zusammengeführt und miteinander verklebt werden. Process for the continuous production of a packaging film with an integrated system (18) for easy opening and reclosing of a packaging container (10) produced using the packaging film (12), the packaging film (12) crossing two outside the area of the opening and reclosing system (18) comprises a permanent adhesive (38) interconnected foils (28, 30), an inner foil (28) having a first perforation (32) as an opening (22) and an outer foil (30) a second perforation (34) to form a die has a first perforation (32) covering the closure flap (20), and wherein a pressure-sensitive adhesive (24) is arranged between the two foils (28, 30) in the region of the closure flap (20),
characterized in that the outer film (30) present as a film tape is coated with the permanent adhesive (38) and the pressure sensitive adhesive (24), the second perforations (34) are cut into the outer film (30) coated with the adhesives (38, 24) to form the sealing flaps (20), the first perforations (32) are cut as openings (22) into the inner film (28), and the two foils (28, 30) are combined to form the packaging foil (12) in the form of a foil strip and are glued together. Anlage zur kontinuierlichen Herstellung einer Verpackungsfolie mit integriertem System (18) zum leichten Öffnen und Wiederverschliessen eines unter Verwendung der Verpackungsfolie (12) hergestellten Verpackungsbehälters (10), wobei die Verpackungsfolie (12) zwei ausserhalb des Bereichs des Öffnungs- und Wiederverschliesssystems (18) über einen Permanentkleber (38) miteinander verbundene Folien (28, 30) umfasst, wobei eine innere Folie (28) eine erste Perforation (32) als Öffnung (22) und eine äussere Folie (30) eine zweite Perforation (34) zur Bildung einer die erste Perforation (32) überdeckenden Verschliesslasche (20) aufweist, und wobei zwischen den beiden Folien (28, 30) im Bereich der Verschliesslasche (20) ein Haftkleber (24) angeordnet ist,
gekennzeichnet durch eine erste Klebstoffauftragstation (44) zum partiellen Auftragen des Permanentklebers (38) auf die als Folienband vorliegende äussere Folie (30), eine zweite Klebstoffauftragstation (48) zum partiellen Auftragen des Haftklebers (24) auf die äussere Folie (30), eine erste Schneidstation (54) zum Schneiden der zweiten Perforationen (34) in die äussere Folie (30), eine zweite Schneidstation (56) zum Schneiden der ersten Perforationen (32) in die als Folienband vorliegende innere Folie (28), eine Kaschierstation (60) zum Zusammenführen und Verkleben der beiden Folien (28, 30) zur Verpackungsfolie (12) in Bandform, und eine Steuereinheit (58) zum Steuern der Schneidoperationen und der Bandlaufgeschwindigkeiten der beiden Folien (28, 30) zur gegenseitigen Ausrichtung vor deren Eintritt in die Kaschierstation (60). System for the continuous production of a packaging film with an integrated system (18) for easy opening and reclosing of a packaging container (10) produced using the packaging film (12), the packaging film (12) over two outside the area of the opening and reclosing system (18) comprises a permanent adhesive (38) interconnected foils (28, 30), an inner foil (28) having a first perforation (32) as an opening (22) and an outer foil (30) a second perforation (34) to form a die has a first perforation (32) covering the closure flap (20), and wherein a pressure-sensitive adhesive (24) is arranged between the two foils (28, 30) in the region of the closure flap (20),
marked by a first adhesive application station (44) for partially applying the permanent adhesive (38) to the outer film (30) present as a film strip, a second adhesive application station (48) for partially applying the pressure sensitive adhesive (24) to the outer film (30), a first cutting station (54) for cutting the second perforations (34) into the outer film (30), a second cutting station (56) for cutting the first perforations (32) into the inner film (28) present as a film strip, a laminating station (60) for bringing together and gluing the two foils (28, 30) to form the packaging foil (12) in tape form, and a control unit (58) for controlling the cutting operations and the belt running speeds of the two foils (28, 30) for mutual alignment before they enter the laminating station (60).
EP19980810434 1998-05-13 1998-05-13 Packaging with packaging sheet with integral opening- and reclosing system Expired - Lifetime EP0957045B1 (en)

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EP19980810434 EP0957045B1 (en) 1998-05-13 1998-05-13 Packaging with packaging sheet with integral opening- and reclosing system
DE59805411T DE59805411D1 (en) 1998-05-13 1998-05-13 Packaging container with a packaging film with integrated opening and reclosing system
CA 2270572 CA2270572A1 (en) 1998-05-13 1999-04-30 Packaging foil with integral opening and re-closing system

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CA2270572A1 (en) 1999-11-13
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