EP1046594B1 - Package having a peelable seal and method of manufacturing said package - Google Patents

Description

The invention relates to a packaging container, in particular a bag packaging, containing at least two wall foils separated by the filling material when ready for sale, at least one peelable or peelable near the edge connecting two wall foils Connecting seam, a packaging edge running along the connecting seam, and a recess penetrating the connecting seam vertically. Within the scope of the invention there is also a packaging film and a method for producing packaging containers.

Known pouch packaging, such as flat or tubular bags, are usually included so-called form-fill-seal machines. Process these machines Packaging with a low level of prefabrication or packaging materials directly to complete packs. These are, for example, vertical or horizontal working form-fill-seal machines.

As a rule, a cover that is open on one side, which is already in a preliminary stage from individual foils was prefabricated from the roll or by folding a film against itself with Provide the filling and then to a pack ready for sale, for example by means of Sealing, closed.

Such packaging, such as for packaging potato chips and other snacks or sweets, such as candy, are usually not seen as special Opening means.

The connection seam means the generally elongated surface section which two sides of the film separable or peelable or inseparable.

So that the pack can be opened without tools such as scissors or knives the packaging manufacturer states that the upper seam close to the edge can be peeled off is. Such a package is opened by the front and back packaging films or wall foils in their area close to the connection by one hand with the thumb and index finger grasped and pulled apart with force until the The peelable seam close to the edge begins to open or peel along the length and separating the front and rear wall foils in the area of the connecting seam go. This is by far the most common way to open such packages, since no tools are required and the time required to open it is less, and since there are no cut-off small parts as packaging waste.

Packs of the type described must be in the shops either on rack boards are stored or they are in special tools, such as brackets, in hung on the shelves and racks. So on such additional tools for hanging the bag packs can be dispensed with, the packs are usually in the Area of the upper, near-edge, peelable connecting seam with a parallel to this Seamless recess or slot, for example with the so-called Euro slot Mistake. This allows the packaging to be hung on bars on shelves, for example.

The slot is often punched out of the finished package at the end of the packaging process and possibly reinforced in its edge areas.

When tearing open packs that have such a slot, however, it is necessary increased effort to separate the seam in the area of this recess or peel. Often the connection seam cannot be done without this peel off further and the wall foils start uncontrollably into the pack filling space to tear into it, which will destroy the packaging and inadvertently fill the contents can fall out. This makes the packaging suitable for reuse, for example to repackage remaining quantities, unusable.

The invention is therefore based on the object of a packaging container at the outset mentioned type with a peelable seam and with a piercing this seam To create recess for hanging the pack, which is in the area of peelable connection seam with even force can be opened by hand, and in which the packaging or wall foils are not uncontrolled during the opening process tear into the packing space.

According to the invention the object is achieved in that at least in a wall film Packaging container in the area of the peelable connection seam from the pack filling space Seen here at least in front of the recess, preferably along the connecting seam extending, weakening or dividing line is arranged so that after peeling the connection seam seen from the pack filling space above the weakening or dividing line a surface area surrounding the recess which or dividing line containing wall film is not peeled off, the weakening or dividing line seen from the pack filling space at least one lower border forms this area.

The packaging container according to the invention is preferably a bag packaging, for example a flat, bottom or tubular bag. However, the packaging container can also only partially, preferably in its upper area, designed as a bag packaging be and in certain parts consist of a rigid or semi-rigid container. This can be achieved by, for example, the wall foils of a bag packaging sealed, welded or with on the edge of a rigid or semi-rigid container be glued to this.

The packaging container can also have several sides or wall foils and one assume any geometric shape, for example the shape of a cuboid or Tetrahedron.

The packaging container preferably has a front and rear wall film, which are characterized by the fact that they are separated from one another by the product in between are separated. The front and back wall film can be separated by packaging or be formed by folding a packaging film against itself.

The packaging is usually labeled and / or provided with graphic elements. The terms "bottom", "top" and "side" refer to the packaging focus on the orientation of the packaging in such a way that the writing and picture elements be presented in a readable view. The front wall film, also the front of the packaging or called the front packaging film, is usually on the store shelf packaging side facing the buyer and usually contains image and text elements and serves to identify the product and should draw the buyer's attention to the product do.

The back wall film, also packaging back or packaging film on the back is usually the side facing away from the buyer on the store shelves and serving for example the more precise product information, such as the composition of the content, Prices, etc.

The wall foils of the packaging container are preferably on their sides near the edges Sealed or welded in sections or circumferentially, glued or in another way closed, at least one, advantageously near the edge, a peelable seam Connecting seam is. The packaging container according to the invention preferably contains only one peelable seam, preferably the upper seam close to the edge of the packaging container.

A peelable connection or connecting seam is the connection of two film surfaces, or two wall foils to understand, which only with the use of increased tension and / or Thrust forces can be separated again without one of the two or both film surfaces significantly damaged, i.e. be torn. The separation takes place for example by tearing apart the two wall films with your hands. When peeling such foil connections can be, for example, one between the foil surfaces lying sealing layer or a sealing tape can be broken or by adhesive generated adhesion between the film surfaces can be solved. Furthermore, the separation can the peelable seam also by destroying one between the foils lying connection layer, i.e. by breaking cohesion.

The peelable connection seam can be welded, for example, by mutual welding two film surfaces are produced under the influence of heat and / or pressure, e.g. Hot gas welding, hot wedge welding, butt welding, thermal contact welding, High-frequency welding, ultrasonic welding, induction welding or friction welding, the welding temperature in particular must be specifically regulated so that a Peelable connection is created. Another type of connection is the so-called sealing, such as hot or cold sealing, the separability of the connection in particular by the choice of a removable or breakable sealing wax or a removable or breakable one Sealing layer or fabric is determined. The peelable seam can for example also via a coextrusion process or by means of adhesive tape or simply be made by gluing.

The packaging and in particular the peelable connecting seam is preferred sealed or produced by mutually sealing or welding the wall foils.

In the area of the peelable connection seam, preferably in the middle, contains the Packaging container perpendicular to the seam surface a continuous recess, for example a slit or a round hole, which allows the packaging for example hanging on a pole on the shelf. Instead of a recess a cut can also be provided in an equivalent manner. It is preferably the Exception by a so-called "Euro slot".

The recess is preferably in an upper, peelable connection seam, in the so-called upper transverse seam, punched or cut, so that the text or image elements the packages hung on the sales shelf are aligned to read. The recess is placed and dimensioned such that below the recess, i.e. between the bottom of the recess and the packing space is still sufficiently sealed, welded or sealed. On the other hand, that too Seam should be dimensioned sufficiently wide so that the packaging in the area of Recess remains tight.

At least one wall film of the packaging container, the front and / or the back Wall film, preferably exclusively a wall film, ideally the front wall film, contains in the area of the peelable connection seam seen from the pack filling space at least in front of or below the recess, preferably essentially weakening or dividing line running longitudinally to the connecting seam.

Since the weakening or dividing line runs exclusively in the area of the connecting seam, the tightness of the packing filling space is not impaired.

Below a line of weakness is a predetermined tear point in the form of a line or a limited, to understand elongated surface section, which has a significantly lower tear strength has than the packaging or wall film and that under a certain Tensile load tears, whereby for example the use of physical strength, i.e. the peeling the connecting seam with the hands, already generated enough tensile stress. The line of weakness can, for example, by perforating, cutting or local weakening a limited section of film can be generated.

Under a dividing line is a cut or opening that completely penetrates the wall film to understand.

The weakening or dividing line is preferably a dividing line, which is designed as a cut penetrating the wall film.

The straight line connecting the two end points or the outermost points on the side the weakening or dividing line preferably has at least the length of the horizontal Extension of the recess. That is, the distance between the endpoints or the laterally outermost points of the weakening or dividing line and the ones facing them side edges is less than or equal to the distance between the corresponding ones lateral ends of the recess and the side edges facing them.

The line of weakness or dividing line is preferably arcuate and from the package filling space seen convex. Ideally, the weakening or dividing line contains two short, lateral end sections that run towards the top of the packaging and are advantageous stand perpendicular to the top edge of the packaging.

The weakening or dividing line can also partially or completely remove the recess enclose, the weakening or dividing line, for example, an ellipse or circular, but also rectangular in shape or the shape of any geometric or creative figure can take. For example, it is possible that a weakening or partially or completely enclosing the recess Dividing line typical symbol shapes contoured.

If the weakening or dividing line completely surrounds the said recess, see above it is preferably a line of weakness.

The exact shape and size and type of the dividing or weakening line, i.e. Cut, perforation, etc. is, among other things, the size of the packaging container, the size and Shape of the recess and depending on the packaging material.

The packaging film of the packaging container according to the invention can be a monofilm or a composite film made of two or more partial layers, the composite film can consist of layers of the same or different plastics. The packaging films must be such that packaging with peelable items can be made from them Have closing seams or connecting seams made.

The films or film layers preferably consist of thermoplastic materials the series of polyvinyl chloride (PVC), polyolefins, such as polypropylene, polyethylene or Copolymers of polyethylene, polyester, polyamide, cycloolefin copolymers. Suitable thermoplastics for producing these films or film layers are as follows listed.

The PVC films are films based on chlorine-containing polymers, i.e. Polymers, des Vinyl chlorides or of vinyl plastics containing vinyl chloride units in their Structure, such as copolymers of vinyl chloride with vinyl esters of aliphatic acids, copolymers vinyl chloride with esters of acrylic or methacrylic acid or with acrylonitrile, Copolymers of vinyl chloride with diene compounds and unsaturated dicarboxylic acids or their anhydrides, copolymers of vinyl chloride and vinylidene chloride with unsaturated Aldehydes, ketones, etc. or polymers and copolymers of vinylidene chloride Vinyl chloride or other polymerizable compounds.

The vinyl-based thermoplastics can also be made in a manner known per se with primary or Secondary plasticizers. The materials mentioned containing vinyl chloride can also be used for the cast PVC films.

PVC films are at least monoaxially (oPVC) stretched or can also be biaxial in some cases to be stretched.

If the plastic films are made of polyesters (PET films), there are examples of the polyesters Polyalkylene terephthalates or polyalkylene isophthalates with alkylene groups or residues 2 to 10 carbon atoms or alkylene groups with 2 to 10 carbon atoms, at least are interrupted by a -0-, e.g. Polyethylene terephthalate, polypropylene terephthalate, Polybutylene terephthalate (polytetramethylene terephthalet), polydecamethylene terephthalate, Poly-1,4-cyclohexyldimethylol terephthalate or polyethylene-2,6-naphthalene dicarboxylate or polyalkylene terephthalate and polyalkylene isophthalate copolymers, the proportion on isophthalate e.g. 1 to 10 mol%, mixed polymers and terpolymers, and block polymers and grafted modifications of the above substances. Other suitable polyesters are known in the industry under the abbreviation PEN.

Other polyesters are copolymers of terephthalic acid and another polycarboxylic acid with at least one glycol. The copolyesters are expedient Terephthalic acid, ethylene glycol and an additional glycol. Glycol-modified are preferred Polyesters known to the professional as PETG.

Other suitable polyesters are polyalkylene terephthalates with alkylene groups or radicals with 2 to 10 carbon atoms and polyalkylene terephthalates with alkylene groups or radicals having 2 to 10 carbon atoms which are interrupted by one or two -0-. Other preferred polyesters are polyalkylene terephthalates with alkylene groups or residues with 2 to 4 carbon atoms. These polyethylene terephthalates also include A-PET, To count PETP and the mentioned PETG or G-PET. Polyethylene terephthalate films are very particularly preferred. The polyester films can be mono- or preferably biaxial be oriented.

The polypropylene for films or coatings can be an isotactic, syndiotactic or atactic polypropylene or a mixture thereof. The polypropylene can be amorphous, partially crystalline, crystalline or highly crystalline. It can also be block copolymers or random copolymers of polypropylene can be used. The average molecular weight can e.g. from less than 10,000 to 600,000 and higher. The polypropylene films can be stretched mono- or biaxially.

If the plastic films are made of polyethylene (PE film), then there are examples of polyethylene Low density polyethylene (LDPE), medium density (MDPE) or high density (HDPE). The PE films can be stretched mono- or biaxially.

If the plastic films are polyamide films (PA), the polyamides include, for example Polyamide 6, a homopolymer of ε-caprolactam (polycaprolactam); Polyamide 11, Polyamide 12, a homopolymer of ω-laurolactam (polylaurine lactam); Polyamide 6.6, a homopolycondensate of hexamethylene diamine and adipic acid (polyhexamethylene adipamide); Polyamide 6.10, a homopolycondensate of hexamethylene diamine and sebacic acid (Polyhexamethylene sebacamide); Polyamide 6.12, a homopolycondensate made from hexamethylene diamine and dodecanedioic acid (polyhexamethylene dodecanamide) or polyamide 6-3-T, a homopolycondensate made from trimethylhexamethylene diamine and terephthalic acid (Polytrimethylhexamethylene terephthalamide), and mixtures thereof. The polyamide films are mono- or preferably biaxially oriented (oPA).

With cycloolefin copolymers are thermoplastic olefin polymers with an amorphous structure described, which are essentially copolymers of ethylene and 2-norbornene or Represent tetracyclododecene. The norbornene content in the ethylene-norbornene-cycloolefin copolymer can be, for example, from 12 to 80 mol%, preferably 52 mol%. The polymerization can be carried out by metallocene catalysts, a polymerization in solution and the pressure of the ethylene can be controlled. The cycloolefin copolymers can be amorphous or have crystallinity.

Composite foils containing one or more foils or layers can also be used of the above-mentioned plastics and foils or layers of metal, such as aluminum, Steel, copper or brass, made of paper or cellulosic materials become.

If the packaging container according to the invention is closed by sealing techniques, then preferably assign the mono- and / or composite films in order to assign the sealing properties control, on one or both free sides at least at the intended connecting surfaces Sealing layers, such as sealing foils, sealable coatings or sealing lacquers, e.g. based on ethylene acrylic acid (EAA), polyolefins such as polyethylenes, polypropylenes, Polyacrylates, PVC resins, polyvinylidene chlorides, EVA, polyethylene terephthalates, especially of type A-PET, etc. The free pages or at least one of the free ones Sides, especially the oriented polyester films, can be coated with EVA (ethylene / vinyl alcohol copolymer) or an amorphous polyester sealing layer of the type PET-A be coated. Examples of preferred sealing layers are sealing waxes containing polyethylene or a film made of approx. 40 µm thick polypropylene.

Detachable seal connections are expedient through the use of detachable seal layers reached.

If the packaging is sealed by welding, a sealable one is used Plastic, in particular from an optionally modified polyolefin, such as polyethylene or polypropylene, their copolymers or ionomers.

Instead of sealing or welding, the packaging can also be sealed by gluing become. For the creation of a non-peelable seam, this is necessary a permanent adhesive is used. As a permanent adhesive, an adhesive is preferred on the Base of polyurethane used. For the production of a peelable seam a pressure sensitive adhesive can be used. A suitable pressure sensitive adhesive (PSA, pressure sensitive adhesive) is based on polyacrylate or other self-adhesive resins built up. Cold sealing based on latex can also be used.

When a packaging container or package according to the invention is torn open, it starts the peelable from the pack filling area towards the top of the packaging The connecting seam is ripped open on the long side, that is to say the first wall film, preferably the front wall film, is from the second wall film, preferably the rear wall film, separated at the seam. In the area between the two side end points or between the two outermost points of the weakening or dividing line the front, containing the weakening or dividing line, only up to the Line of weakness or dividing line peeled off from the rear wall film. As it progresses Separation process is based on the two end points of the weakening or Tear the front wall film in the direction of the upper packaging edge, This means that so-called tear lines form from the two end points. The End sections of the weakening or dividing line in the front wall film act on the Pulling the two wall foils apart like tearing notches and favor the creation a tear line without having to separate the two wall foils with increased force have to be pulled. Within the one through the line of weakness or dividing line, the two side tear lines and the upper packaging edge of the limited area, in whichever is the recess, the front wall film is not from the back Wall film separated. The pack is in the area of the peelable seam the tear-open process on the long side, however, completely open.

Are the two end sections of the preferably arcuate weakening or dividing line vertically aligned, the notch effect causes the two tear lines as well predominantly run perpendicular to the upper packaging edge.

If the weakening or dividing line completely surrounds the slot or recess, so within the area enclosed by the weakening or dividing line the front wall film was not peeled off. Because in this case the weakening or dividing line has no end points, no tear lines are formed in the front wall film out.

If the recess is only partially enclosed by the weakening or dividing line and the end sections run approximately parallel to one another to the upper packaging edge closed, the wall film can be torn through due to the notch effect, that starting from the end points of the weakening or dividing line, the two Tear line connecting endpoints.

In each of the mentioned embodiments of dividing or weakening lines remains after peeling off the connecting seam around the slot or the recess Area in which the two wall films are not separated from one another during the separation process were. In this way, the package according to the invention can be opened without the connecting seam in the area of the recess using increased tensile strength, must be separated from each other. This makes opening the package much easier, and the danger that the wall foils become uncontrollable when the package is torn open tear into the filling area of the pack no longer exists. This allows that Buyers, the opened package at any time and without much effort, for example with a Adhesive tape or other sealing means to close again.

A packaging film that is used to manufacture the Packaging container, is characterized by that the packaging film, the wall film containing the weakening or dividing line forms, in the area of the intended peelable connecting seam from the intended Pack filling space considered one at least in front of the intended recess Includes weakening or dividing line.

A preferred method for the continuous production of a packaging container according to the invention is characterized in that in the packaging film forming a wall film in the area of the intended upper, peelable connecting seam, an arcuate, viewed from the intended package filling space, convex weakening or Separation line is created, and the packaging film with the intended upper Section containing the packaging edge in the direction of transport forward through the packaging machine is promoted, and the weakening or dividing line with its end points is conveyed forward in the transport direction, so that the packaging film at the end points the weakening or dividing line cannot be torn open during the transport process can, and then further processed the packaging film into packaging containers and the packaging container is filled and by generating an upper, peelable seam is closed by sealing or welding, and in the upper, peelable connection seam, viewed from the provided packing space after the weakening or dividing line, the recess is created.

The weakening or dividing line is preferably used as a line penetrating the wall film Cut made. Ideally, this cut is made, for example, with a on the film cutting machine additionally attached cutting or punching device in a separate Process step carried out. However, the packaging machine can be used for cutting this weakening or dividing line also a separate cutting or punching device provide. The weakening or dividing line is preferably before cutting and mutual connection of the packaging films to packaging containers.

The weakening or dividing line is preferably in alignment with the sealing device, which executes the upper connecting seam. The packaging container in turn is also produced in alignment with the sealing device mentioned, so that the Weakening or dividing line relative to the upper packaging edge and relative to the recess or slot is always positioned the same.

Fig. 1:

Vorderansicht eines Verpackungsbehälters bzw. einer Packung;

Fig. 2:

Vorderansicht einer vorderen Wandfolie nach dem Aufreissen der Packung;

Fig. 3:

Vorderansicht einer rückseitigen Wandfolie nach dem Aufreissen der Packung.

The invention is explained in more detail below using an example and with reference to the accompanying exemplary drawings. Show it:

Fig. 1:

Front view of a packaging container or a package;

Fig. 2:

Front view of a front wall film after opening the package;

Fig. 3:

Front view of a back wall film after tearing the package.

Fig. 1 shows the upper part of a bag package 1 in front view, containing a peelable Connection seam 4, which has a rear wall film 7 and a front wall film 5 (see FIGS. 2 and 3) peelably connects together, a weakening or Partition line 3 in the front wall film 5 and a recess 2, the so-called Euro slot. The packaging container 1 is inter alia by an upper packaging edge 20 and lateral packaging edges 13, 14 limited. The Euro slot 2 has lateral ends 17, 18 on. The weakening or dividing line 3 is a dividing line and as one the front one Wall film 5 penetrating cut is formed. It is from the pack filling space 11 seen in front of the Euro slot 2 and is arched. It is from the packing space 11 seen from convex. The dividing line 3 has two short end sections 8, 12, which run against the upper packaging edge 20 and essentially stand perpendicular to this.

The peelable connecting seam 4 is preferably a sealed seam. The straight connecting line between the two end points 15, 16 of the dividing line 3 is longer than the straight connecting line between the end points 17, 18 of the Euro slot 2, so that the two end points 15, 16 of the dividing line 3 are closer to the side edges 13, 14 facing them than the corresponding end points 17, 18 of the Euro slot 2.

Below the connecting seam 4 is between the front wall film 5 and the back Wall film 7 of the pack filling space 11.

By tearing apart the front wall film 5 and the rear wall film 7 in the upper part of the packaging container 1 with the hands, the peelable connecting seam 4 separated on the long side (Fig. And 3). Due to the dividing line 3 below the Euro slots 2, the front wall film 5 between the two end points 15, 16 is only up to peeled off to the dividing line 3 from the rear wall film.

After the front wall film 5 along the dividing line 3 to the height of the end points 15, 16 is peeled off on the long side from the rear wall film, as progressing Separation process of the front wall film 5 starting from the two end points 15, 16 in Torn in the direction of the upper packaging edge 20 and two tear lines are formed 19th

The end sections 8, 12 of the dividing line 3 act like tearing notches and favor the Formation of the tear line 19. Since the short end sections 8, 12 of the dividing line 3 to the upper The edge of the packaging runs and is essentially perpendicular to it the tear line 19 is also essentially perpendicular to the upper packaging edge 20 to.

After the tear-open process, the pack is in the area of the peelable connecting seam 4 fully open on the long side. However, the connecting seam 4 has only one area Separation 6, 10 on. In the two areas between the side Edges 13, 14 and the tear line 19, the front wall film 5 over the entire width separated from the rear wall film 7.

Limit the two tear lines 19, the upper packaging edge 20 and the dividing line 3 a surface area 9 containing the Euro slot 2, in which the front wall film 5 is not peeled off from the rear wall film 7 (FIG. 3).

Thanks to the dividing line 3, the connecting seam is prevented when the package is opened 4 is peeled off in the area of the Euro slot 2.

Since the end portions of the dividing line 3 act like tearing notches, the tearing of the Film starting from the end points 15, 16 of the dividing line 3 when the package is torn open favors so that in the packaging container 1 according to the invention the tearing open Connection seam 4 in the area of the Euro slot 2 does not require increased effort.

Claims (14)

1. Packaging container (1), in particular a bag-type package, comprising in the ready-for-sale state at least two film walls (5, 7) separated by the product, at least one peelable seam (4) close to the edge joining the film walls (5, 7), a package edge (20) extending along the peelable seam (4) and a recess (2) passing perpendicularly through the peelable seam (4), characterised in that a weakening line or separating line (3) preferably extending loogitudinally relative to the seam (4) is arranged at least in one film wall (5) of the packaging container (1) in the region of the peelable seam (4) at least in front of the recess (2) as viewed from the filling space (11) of the package, in such a manner that, once the seam (4) has been peeled off, a surface region (9) of the film wall (5) containing the weakening line or separating line (3) surrounding the recess (2) is not peeled of above the weakening line or separating line (3) as viewed from the filling space (11) of the package, the weakening line or separating line (3) forming at least one lower boundary of this surface region (9) as viewed from the filling space (11) of the package.
2. Packaging container according to claim 1, characterised in that the connecting line between the two end points (15, 16) or the laterally outermost points of the weakening line or separating line (3) includes at least the length of the horizontal extent of the recess (2) and the distance between the end points (15, 16) or the laterally outermost points of the weakening line or separating line (3) and the lateral package edges (13, 14) directed towards them is smaller than or equal to the distance between the corresponding lateral ends (17, 18) of the recess (2) and the lateral package edges (13, 14) directed towards them.
3. Packaging container according to claims 1 to 2, characterised in that the weakening line or separating line (3) is arcuate and is convex as viewed from the filling space (11) of the package.
4. Packaging container according to claims 1 to 3, characterised in that the weakening line or separating line (3) comprises short end portions (8, 12) extending towards the upper package edge (20) and preferably perpendicular thereto.
5. Packaging container according to claim 1, characterised in that the weakening line or separating line (3) partially or completely surrounds the recess (2).
6. Packaging container according to claims 1 to 5, characterised in that the weakening line or separating line (3) is provided on the front film wall (5).
7. Packaging container according to claims 1 to 6, characterised in that the weakening line or separating line (3) is a separating line, preferably an incision passing through the film wall (5).
8. Packaging container acconling to claims 1 to 6, characterised in that the weakening line or separating line (3) is a weakening line, preferably an incision weakening the film wall (5) or a perforation in the film wall (5) and that the weakening line is provided in such a manner that it tears when the seam (4) is peeled off.
9. Packaging container according to claim 1, characterised in that the seam (4) is a peelable sealing seam.
10. Packaging container according to claim 1, characterised in that the peelable seam (4) is an upper transverse seam or joint seam on the packaging container (1) and the package edge (20) extending along the seam (4) is an upper package edge.
11. Packaging container according to claim 1, characterised in that the recess (2) is a Euro-slot or a slot extending along the seam (4).
12. Packaging container according to claim 1, characterised in that the film walls (5, 7) are monofilms or composite films consisting of two or more layer and the films or film layers contain thermoplastics from the group consisting of polyvinyl chloride (PVC), polyolefins, such as polypropylene, polyethylene or copolymers of polyethylene, polyester, polyamide or cycloolefin copolymers.
13. Process for the continuous production of a packaging container according to claim 1, characterised in that an arcuate weakening line or separating line (3) which is convex when viewed from the intended filling space (11) of the package is provided in the packaging film forming a film wall (5) in the region of the intended upper peelable seam (4), the packaging film is conveyed through the packaging machine with the portion containing the intended upper package edge (20) at the front in the conveying direction, the weakening line or separating line (3) is conveyed with its end points (15, 16) at the from in the conveying direction, so that the packaging film cannot be torn open at the end points (15, 16) of the weakening line or separating line (3) during the conveying process, the packaging film is then further processed to form packaging containers (1), the packaging container (1) is filled and closed by the production of an upper peelable seam (4) by means of sealing or welding and the recess (2) is provided in the upper peelable seam (4) after the weakening line or separating line (3) as viewed from the intended filling space (11) of the package.
14. Process for the continuous production of packaging containers according to claim 13, characterised in that the weakening line or separating line (3) is a separating line, preferably an incision passing through the packaging film, and the separating line (3) is formed in a separate step by means of a cutting device or punching device additionally provided on the film-cutting machine or by means of a separate cutting machine or punching machine provided in the packaging machine.

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