EP2389325B1 - Tubular bag packaging for tabular piece goods and method for producing a packing material web - Google Patents

Description

TECHNICAL AREA

The present invention relates to a tubular bag packaging according to the preamble of independent claim 1. Within the scope of the invention is also suitable for the production of a Pacstoffes for the subsequent production of the tubular bag packaging process.

STATE OF THE ART

Out DE 24 58 462 A1 is a tubular bag packaging for ribbed chocolate bars known. On the underside of the packaging a longitudinal sealing seam is arranged along a first predetermined breaking point of the chocolate bar. The separation of the longitudinal sealing seam is carried out by breaking the chocolate bar along its predetermined breaking point, wherein the leverage effect is used in breaking the panel to overcome the required to separate the longitudinal sealing seam and thus opening the packaging adhesive force of the seal.

Out DE 26 58 631 A1 For example, a wrapping package is known for chocolate bars to be broken in the package along a predetermined breaking point. A sealing seam arranged on the underside of the packaging is only partially parted to facilitate its separation provided on the closing seam forming surface of the packaging material applied cold glue.

A disadvantage of the two aforementioned packages is that usually the unattractive underside of the product is exposed. The pulling apart of the longitudinal sealing seam is moreover only possible if the product is used as a lever, which requires a breakage of the product.

From the DE 31 15 144 A1 a foil packaging for chocolate bars with a laterally arranged longitudinal sealing seam with a longitudinal notch is known as an opening aid. To open the packaging, the longitudinal sealing seam projecting from the packaging in the form of an optically unattractive, wide tab is torn away from the remaining packaging along the notch forming a predetermined breaking point.

Out WO 88/00562 A is a tubular bag packaging for chocolate bars with a longitudinal sealing seam on the back of the package known. On the front side of the packaging, lateral sealing seams running in parallel opposite the longitudinal sealing seam are arranged in the packaging material in opposite edge regions. Line-shaped predetermined breaking points limit a tear-open area. About an unsealed edge zone of a transverse sealing seam, the packaging front side forming packaging material can be taken and withdrawn to open the package as a stretched between the two predetermined breaking points across the width of the panel strip from the rest of the package. The opening of the front of the packaging presents the attractive top of the product and the opening of the packaging is simplified. The disadvantage of this packaging, however, is the high material consumption, since the two lateral sealing seams must be handled three times.

Out US-A-2005/276525 For example, a tubular bag package having a reclosing system in the form of a label incorporated into the packaging film and overlapped is known. With the application of a label with a small overlap results in only a slightly increased material consumption. The labels can either already be incorporated into the film, or first be attached to the packaging machine. The disadvantage of this packaging is that the opening is not the full area of the Packaging achieved and thus a tabular product can not be removed, and the high cost of a pre-made label.

A method of the type mentioned is out WO 98/18678 A known.

PRESENTATION OF THE INVENTION

The invention has for its object to provide a package for tabular products, which avoids the disadvantages mentioned in the prior art. In particular, the packaging should be made to save material and allow easy opening of the packaging over the entire width of the front of the packaging.

Another object of the invention is to provide a method suitable for producing the package.

For the inventive solution of the problem leads a tubular bag packaging with the features of claim 1.

In the tubular bag packaging two separation areas, each with a separable longitudinal seam in both edge regions of the front side of the packaging to form a substantially over the entire width of the front of the package extending and detachable from the packaging opening label are arranged. Conveniently, an unsealed edge zone is thereby arranged in at least one transverse sealing seam to form a tear-open tab.

In another preferred tubular bag packaging are two separation areas with each a separable longitudinal seam in both edge regions of the front of the package to form a substantially over the entire width of the front of the package extending and partially detachable opening label arranged, wherein for subtracting the opening label from the rest of the packaging in the region of one of the transverse sealing seams in the packaging material a line of weakness parallel to Cross seal seam is arranged.

A method suitable for producing a tubular bag packaging according to the invention is defined by the features of claim 4. This method is characterized in that a strip-shaped packaging material web is continuously deflected by lateral drawing of packaging material by a first angle from the plane of the packaging material web and deflected at a distance by a second angle in the opposite direction in a direction parallel to the packaging material level plane, the packaging material web the first level is severed to form a central packaging material strip and by two, located on both sides of the central packaging material strip, lateral packaging material strip strip before deflecting, which are caused by the twice deflection of the packaging material, deflected parts of the lateral packaging material strip strips in the second plane, resulting in a results in narrow overlap of the central packaging material web strip with the lateral packing material web strips, and the packaging material web strips in the overlapping region via an adhesive or a sealing layer to form as Lap Seal formed, separable longitudinal seams are separably connected.

• Leicht zu öffnende Verpackung für tafelförmige Produkte.
• Beim Öffnen der Verpackung wird die attraktive Oberseite des Produktes freigegeben.
• Das Produkt wird beim Öffnen nicht beschädigt.
• Die Oberseite der Verpackung kann vollflächig gestaltet werden (kein störendes Label).
• Der Materialverbrauch ist nur geringfügig höher als bei einer Packung ohne Öffnungshilfe.
• Es sind keine komplexen Materialstrukturen nötig (das Ausgangsmaterial kann auch eine Monofolie sein)
• Auch für "Hot Seal" Materialien geeignet (z.B. um eine "peel seal" Versiegelung zu erzeugen)
• Die Öffnungshilfe lässt sich kontinuierlich inline herstellen, ohne dass eine teure, speziell mit dem Öffnungsmechanismus ausgestattete Folie eingesetzt werden muss.
• Es kann eine bestehende Standard-Schlauchbeutelmaschine verwendet werden, die um das Modul zur Herstellung der Überlappungsnaht ergänzt wird.
• Verpackungen können mit sehr hohen Geschwindigkeiten hergestellt werden (cold seal).
• Es sind keine Änderungen in der Zweitverpackung nötig.
• Die Öffnungslasche bzw. der Öffnungsmechanismus muss nicht gesucht werden.
• Die Packung kann durch eine geeignete Siegelschicht oder einen zusätzlichen Verschlussstreifen mehrfach wiederverschliessbar ausgeführt werden.
• Es kann eine Öfihungslasche eingearbeitet werden
• Die Schlauchbeutelmaschine kann durch einfache Umstellung Packungen mit oder ohne Öffnungshilfe herstellen
• Für kleine Produktionslose, bei denen sich die Installation des Moduls zur Herstellung der Überlappungsnaht auf der Verpackungsmaschine nicht lohnt, kann anstelle des vorgeschlagenen Verfahrens eine Identische Verpackung mittels eine Folienrolle mit bereits eingearbeitetem Lapseal / eingearbeiteter Öffnungshilfe hergestellt werden.

The resulting with the inventive packaging, inter alia, benefits

• Easy-open packaging for tabular products.
• When opening the packaging, the attractive top of the product is released.
• The product will not be damaged when opened.
• The top of the packaging can be designed over the entire surface (no annoying label).
• The material consumption is only slightly higher than in a package without opening aid.
• There are no complex material structures required (the starting material can also be a monofilm)
• Also suitable for "hot seal" materials (eg to create a "peel seal" seal)
• The opening aid can be continuously inline produced without the need for an expensive foil specially equipped with the opening mechanism.
• An existing standard tubular bag machine can be used which is supplemented by the module for producing the overlap seam.
• Packaging can be produced at very high speeds (cold seal).
• There are no changes in the secondary packaging necessary.
• The opening tab or the opening mechanism need not be searched.
• The package can be repeatedly re-closed by a suitable sealing layer or an additional sealing strip.
• It can be incorporated a Öfihungslasche
• The tubular bag machine can produce packages with or without an opening aid by simply changing them
• For small production lots, where the installation of the module for producing the overlap seam on the packaging machine is not worthwhile, instead of the proposed method, an identical packaging can be produced by means of a film roll with already incorporated lapseal / incorporated opening aid.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

einen Querschnitt durch eine nicht erfindungsgemässe erste Ausführungsform einer Schlauchbeutelverpackung;

Fig. 2

einen Querschnitt durch eine nicht erfindungsgemässe zweite Ausführungsform einer Schlauchbeutelverpackung;

Fig. 3

die Draufsicht auf die Ausführungsform von Fig. 2 mit zusätzlicher Öffnungslasche;

Fig. 4

einen Querschnitt durch eine nicht erfindungsgemässe dritte Ausführungsform einer Schlauchbeutelverpackung;

Fig. 5

einen Querschnitt durch eine nicht erfindungsgemässe vierte Ausführungsform einer Schlauchbeutelverpackung;

Fig. 6

die Draufsicht auf die Ausführungsform von Fig. 5 mit partiellem Label;

Fig. 7

einen Querschnitt durch eine erfindungsgemässe fünfte Ausführungsform einer Schlauchbeutelverpackung;

Fig. 8

einen Längsschnitt durch die Ausführungsform von Fig. 7;

Fig. 9

eine erste Ausführungsform eines Verfahrens zur Herstellung einer Packstoffbahn zur Herstellung von Schlauchbeutelverpackungen;

Fig. 10

eine zweite Ausführungsform eines Verfahrens zur Herstellung einer Packstoffbahn zur Herstellung von Schlauchbeutelverpackungen (heat seal);

Fig. 11

eine dritte Ausführungsform eines Verfahrens zur Herstellung einer Packstoffbahn zur Herstellung von Schlauchbeutelverpackungen;

Fig. 12

eine vierte Ausführungsform eines nicht erfindungsgemässen Verfahrens zur Herstellung einer Packstoffbahn zur Herstellung von Schlauchbeutelverpackungen;

Fig. 13

eine fünfte Ausfübrungsform eines nicht erfindungsgemässen Verfahrens zur Herstellung einer Packstoffbahn zur Herstellung von Schlauchbeutelverpackungen.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing, which is merely illustrative and not restrictive interpreted. The drawing shows schematically in

Fig. 1

a cross section through a non-inventive first embodiment of a tubular bag packaging;

Fig. 2

a cross section through a non-inventive second embodiment of a tubular bag packaging;

Fig. 3

the top view of the embodiment of Fig. 2 with additional opening tab;

Fig. 4

a cross section through a non-inventive third embodiment of a tubular bag packaging;

Fig. 5

a cross section through a non-inventive fourth embodiment of a tubular bag packaging;

Fig. 6

the top view of the embodiment of Fig. 5 with partial label;

Fig. 7

a cross section through a fifth embodiment of a tubular bag packaging according to the invention;

Fig. 8

a longitudinal section through the embodiment of Fig. 7 ;

Fig. 9

a first embodiment of a method for producing a packaging material web for the production of tubular bag packaging;

Fig. 10

a second embodiment of a method for producing a packaging material web for the production of tubular bag packaging (heat seal);

Fig. 11

a third embodiment of a method for producing a packaging material web for the production of tubular bag packaging;

Fig. 12

a fourth embodiment of a non-inventive method for producing a packaging material web for the production of tubular bag packaging;

Fig. 13

A fifth embodiment of a non-inventive method for producing a packaging material web for the production of tubular bag packaging.

DESCRIPTION OF PREFERRED EMBODIMENTS

An in Fig. 1 illustrated tubular wrapping 10 from a flexible, sheet-like packaging material 12 envelops a tabular cargo 14, for example, a chocolate bar, and forms a front packaging 16 and a rear packaging 18. On the back of the package 18 is a longitudinal seam 20 in the form of a technical term " Fin Seal "known fin. Transverse to the longitudinal sealing seam 20 is the tubular bag packaging, as in Fig. 3 shown, closed at both ends via a respective transverse sealing seam 22, 24. On the front side of the packaging 16, an additional, separable longitudinal seam 26 is arranged parallel to the longitudinal sealing seam 20 in a lateral edge region. The packaging material 12 is severed in this area and sealed overlapping. This overlapping seal is under the technical Term known as "Lap Seal". The separable longitudinal seam 26 is arranged to form a tear tab 28 at a distance from a free longitudinal edge 30 of the packaging material 12. The tear tab 28 extends over the entire length of the package 10, so that when tearing open the package 10 by pulling on the tear-open tab 28 and separating the separable longitudinal seam 26, the entire front side of the package 16 is opened.

In the Fig. 2 shown tubular bag packaging 110 differs from the in Fig. 1 shown embodiment only in that the separable longitudinal seam 26 is arranged with the tear tab 28 approximately in the longitudinal center of the front packaging side 16. In this case too, upon separation of the separable longitudinal seam 26 by pulling on the tear-open tab 28, an opening of the packaging over the entire front of the packaging 16 results.

In the Fig. 3 shown tubular bag packaging 110 differs from the in Fig. 2 shown embodiment only in that the tear tab 28 is configured by a loop-shaped cutting guide to a flap-shaped gripping tab 29.

In the Fig. 4 shown pouch packaging 210 differs from the in Fig. 1 shown embodiment only in that the separable longitudinal seam 26 is formed with the tear tab 28 as a fin seal. In this case too, upon separation of the separable longitudinal seam 26 by pulling on the tear-open tab 28, an opening of the packaging over the entire front of the packaging 16 results.

In the Fig. 5 shown tubular bag 210 'differs from the in Fig. 4 shown embodiment in that two separation areas, each with a separable longitudinal seam 26a, 26b in both edge regions of the front side of the packaging 16 to form a substantially over the entire width of the front packaging 16 extending and partially detachable from the packaging opening label 17 'are arranged. How out Fig. 6 can be seen, is to remove the opening label 17 'from the rest of the packaging with separation of the two separable longitudinal seams 26a, 26b in the region of one of the transverse sealing seams 22, 24 in the packaging material, a line of weakness 25 parallel to the transverse seam 22. In this weakening line 25, the packaging can tear and the partial opening label 17 'can be deducted from the rest of the packaging become.

At the in Fig. 7 In the embodiment of a tubular bag packaging 310 shown, two separating regions each having a separable longitudinal seam 26a, 26b are arranged in both edge regions of the packaging front side 16 to form an opening label 17 which extends substantially over the entire width of the packaging front side 16 and can be detached from the packaging. To remove the opening label 17 from the rest of the packaging with separation of the two separable longitudinal seams 26a, 26b, an unsealed edge zone is arranged on one of the transverse sealing seams 22, 24 to form a tear-open tab 23 (FIG. Fig. 8 ).

At an in Fig. 9 in five steps ae illustrated method for the continuous production of a packaging material 12 with two additional separable longitudinal seams 26a, 26b for producing a tubular bag packaging 310 according to Fig. 7 is a flat flexible packaging material web 112 unrolled from a supply roll, not shown (step a) and continuously deflected in a example of two pairs of rolls 114 a, 114 b existing folding device by lateral drawing of packaging material by a first angle from a first plane and at a distance s to the first plane by a second angle in the opposite direction in a second plane parallel to the first plane deflected (step b). The packaging material web 112 is severed in the first plane to form a central packaging material web strip 112 a and two on both sides of the central packaging material strip 112 a, lateral packaging material web strip 112 b, 112 c before the deflection, for example by means of cutting wheels 116 a, 116 b (step c). Due to the rigidity of the film-shaped packaging material substantially the resulting by the two-time deflection of the packaging material distance s of the corresponding deflection deflected parts of the lateral packaging material web strips 112 b in the second plane, resulting in a narrow overlap of the central packaging material web strip 112 a with the lateral Packing web strip 112 b yields (step d). By pressing the packaging material web strips 112 a, 112 b in the overlap region, these are sealed on one side applied cold adhesive strip 118 a, 118 b to form the separable longitudinal seams 26 a, 26 b sealed separable. The cold adhesive strips 118 a, 118 b may already be present on the packaging material web 112 present as rolls or before cutting through the optionally already deflected packaging material web 112 are applied to these.

This in Fig. 10 in four steps ad illustrated method for the continuous production of a packaging material 12 with two additional separable longitudinal seams 26a, 26b for producing a tubular bag packaging 310 according to Fig. 7 is different from the one in Fig. 9 shown method only by the nature of the order of the sealing medium. This is already present as a full-surface heat seal layer on one side of the packaging material. The sealing takes place by means of heatable sealing tools, for example in the form of seal roller pairs 120 a, 120 b (step d), paying attention to a peelable seal.

This in Fig. 11 in five steps ae illustrated method for the continuous production of a packaging material 12 with two additional separable longitudinal seams 26a, 26b for producing a tubular bag packaging 310 according to Fig. 7 is different from the one in Fig. 9 also shown only by the nature of the order of the sealing medium. This is sprayed here after the cutting process (step c) in the form of hot melt strips (step d). By pressing the packaging material web strips 112 a, 112 b in the overlapping region, they are separably sealed via the hotmelt strips 118 a, 118 b applied on one side to form the separable longitudinal seams 26 a, 26 b (step e).

That in the FIGS. 12 and 13 in five steps ae illustrated method for the continuous production of a packaging material 12 with an additional separable longitudinal seam 26a for producing a tubular bag 10 according packaging Fig. 1 is different from the one in Fig. 11 The method shown in that a strip-shaped packaging material web 112 is continuously deflected by laterally pulling packaging material to a perpendicular out of the plane of the packaging material fold 122 (step b) and the packaging material web 112 in the fold 122 to form a first packaging material web strip 112 a and one on one side of the first packaging material web strip 112a lying, lateral packing material web strip 112 b is severed (step c). The resulting from the separation of the fold 122 from the packaging material, protruding from the plane of the packaging material parts of the fold 122 are returned to the plane of the packaging material web, resulting in a narrow overlap of the first packaging material web strip 112 a with the lateral packaging material web strip 112b results. The methods according to the FIGS. 12 and 13 differ only by the side of the packaging material web on which the fold 122 is formed and cut.

Advantageously, the seams, in particular also the longitudinal seam (a seal), can be ultrasonically sealed. Thus, on the one hand, the material consumption can be reduced by making the longitudinal seam narrower. On the other hand, the heat input to the product and also the film is reduced, which reduces the risk that the film warps. Furthermore, the design improves to the effect that the longitudinal seam, which is not required for opening, is optically less visible. The other seams can also be sealed with ultrasound.

Claims (4)

1. Tubular-bag pack (310) for articles (14) in bar form, in particular for bars of chocolate, made of a film-like packaging material (12) formed from a packaging material web (112), having a pack front side (16), a pack rear side (18) that has a longitudinal sealing seam (20), two transverse sealing seams (22, 24) that are arranged in a spaced-apart manner transversely with respect to the longitudinal sealing seam (20), and two separating regions, each having a longitudinal seam (26a, 26b) as a tear-open aid for opening the pack, that extends parallel to the longitudinal sealing seam (20) and is arranged in the two edge regions of the pack front side (16), forming an opening label (17) that extends substantially over the entire width of the pack front side (16) and can be detached from the pack and, characterized in that the packaging material (12) is separated parallel to the longitudinal sealing seam (20) in the separating region is, and is arranged in an overlapping manner and is connected in a detachable manner in the overlapping region, forming the separable longitudinal seams (26a, 26b) that are in the form of a lap seal.
2. Tubular-bag pack according to Claim 1, characterized in that an unsealed edge zone is arranged at at least one transverse sealing seam (22), forming a tear-open tab (23).
3. Tubular-bag pack according to Claim 1, characterized in that the opening label (17') can be partially detached, wherein, in order to tear off the opening label (17') from the rest of the pack, a weakening line (25) is arranged, parallel to the transverse sealing seam (22), in the region of one of the transverse sealing seams (22, 24) in the packaging material.
4. Method for producing a packaging material web for producing tubular-bag packs according to Claim 1, wherein
   a strip-like packaging material web (112) is deflected continuously about a first angle out of a first plane by lateral pulling-in of packaging material and at a distance (s) is deflected in the opposite direction about a second angle into a second plane parallel to the first plane, the packaging material web (112) is severed in the first plane prior to deflection, forming a central packaging material web strip (112a) and two lateral packaging material web strips (112b, 112c) located on either side of the central packaging material web strip (112a),
   the deflected parts of the lateral packaging material web strips (112b, 112c) which are produced by the two deflections of the packaging material are transferred into the second plane, as a result of which the central packaging material web strip (112a) narrowly overlaps the lateral packaging material web strips (112b, 112c), and
   the packaging material web strips (112a, 112b; 112c) are connected in a separable manner in the overlapping region by way of an adhesive or a sealing layer, forming the separable longitudinal seams (26a, 26b) that are in the form of a lap seat.

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