DE102005041134B4 - Printed web-shaped multilayer packaging film for rapport-appropriate deep drawing and process for its production - Google Patents

Abstract

Printed web-shaped multilayer packaging film for deep-drawing in accordance with the pattern, the following layer sequence: a layer (a) made of a thin, between 10 μm and 100 μm thick single or composite film with sufficient elasticity for continuous printing in accordance with the pattern and with a printed image applied at least on one side, whereby the The print image is applied in the form of a pattern recurring in the running direction of the web at regular intervals and the individual patterns (repeat) print marks are assigned, a full-area adhesive layer (b) made of laminating adhesive on the printed or one of the printed sides, a layer (c) made of a deep-drawing film , at least the film of layer (a) or the deep-drawing film and the laminating adhesive being optically transparent.

Description

The invention relates to a printed, web-shaped multilayer packaging film for rapport-appropriate deep drawing and a process for their preparation. The field of application generally relates to rigid, thicker (100 to 1000 microns) thermoplastic thermoforming sheets for the continuous or continuous production of packages which are to be printable in a repeatable manner with a recurring pattern on each individual package at the same position. The films are thereby unwound at processing lines of film wraps.

Typical thermoforming films have a thickness between 100 and 1000 microns and are not significantly stretchable or deformable in the cold state (at room temperature or below), d. H. they are "stiff". For thermoforming, these films are at least partially heated and formed with suitable, known in the art deep drawing process. However, the rigid thermoforming films are difficult to print in gravure printing, in particular not suitable for the rapport as roll goods.

Known gravure printing systems for use in packaging gravure printing for flexible packaging regulate the longitudinal repeat over the web tension tension, which is controlled for example by means of register rollers. Rigid films that can not be stretched, can not be printed rapportgerecht with this technique, but this film must rather have a certain elasticity, which allows processing under web tension tension.

Flexographic printing machines have a defined distance between the printing units mounted on a roller, over which the Rapport is steered, the technology is suitable for thick as well as thin films, however, it must be worked there with stronger pressure pressures, whereby half tones can be printed unclearly and misprints Levels of tone fluctuations and defects due to point closures accumulate too much.

An additional disadvantage when printing on thick materials results from the small amount of running meter per roll. This causes a relatively large amount of waste caused by starting and stopping the machine or frequent roll changes. With the existing techniques mentioned above, there are still significant losses in color quality.

Devices for the production of packages from deep-drawn films are known as such, for. B. from the DE 201 18 881 U1 , or from the DE 692 00 185 T2 , which describes by way of example a method for producing reusable deep-drawn yogurt cups.

From the DE 697 07 131 T2 a method for the production of blister packs is known, which allows the thermoforming of a blister pack using already printed plastic, without there being an undesirable deformation of the plastic and thus the imprint on the plastic. For this purpose it is provided that a portion of the mold or a portion of a male or female is cooled and that the printed plastic is positioned relative to the cooled portion of the mold so that the cooled mold part touches a portion of the thermoplastic material, in which a distortion undesirable is.

From the WO 03/106143 A1 discloses a method of thermoforming plastic packaging using a UV curable deep draw ink. This ink is substantially shrink-free during thermoforming, so that distortions in the printed image are avoided. Further, distortion-avoiding printing methods are mentioned.

The object of the invention is to provide a printed, sheet-shaped packaging film, from which by means of known thermoforming processing techniques rapportgerecht - d. H. taking into account the printing position on the individual packaging - deep-drawn packaging elements can be produced, the existing disadvantages of the prior art printing thicker films should be avoided.

This object is achieved by a printed sheet-like multilayer packaging film according to claim 1 and a method for their preparation according to claim 14. The dependent claims relate to preferred embodiments of the invention.

The packaging film according to the invention can also be deep-drawn asymmetrically. By printing the thin film in an upstream processing step, color contrast and distortion may occur be better regulated. The printed thin film has a longer run length than a printed thick film, so that less waste is generated by rapportgerechten approach new roles. The invention includes several embodiments, which are described in more detail below.

• 1.) eine Schicht (a) aus einer dünnen Einzel- oder Verbundfolie mit einer für rapportgerechten Endlosdruck ausreichenden Elastizität mit einer Dicke zwischen 10 μm und 100 μm und mit wenigstens einseitig aufgebrachtem Druckbild, wobei das Druckbild in Form eines in Laufrichtung der Bahn in gleichmäßigem Abstand wiederkehrenden Muster aufgebracht ist und den Einzelmustern (Rapport) Druckmarkierungen zugeordnet sind,
• 2.) eine vollflächige Klebstoffschicht (b) aus Kaschierklebstoff auf der bedruckten oder einer der bedruckten Seiten,
• 3.) eine Schicht (c) aus einer Tiefziehfolie,

wobei wenigstens die dünne Folie (a) oder die Tiefziehfolie (c) und der Kaschierklebstoff (b) optisch transparent sind.The multilayer packaging film according to the invention is a printed sheet-like film for rapport-appropriate deep drawing, which contains the following layer sequence:

• 1.) a layer (a) of a thin single or composite film having sufficient for Rapportgerechten continuous printing elasticity with a thickness between 10 .mu.m and 100 .mu.m and with at least one side applied printed image, wherein the printed image in the form of a running direction of the web in a uniform Distance repeating pattern is applied and the individual patterns (repeat) are assigned pressure markings,
• 2.) a full-surface adhesive layer (b) of laminating adhesive on the printed or one of the printed pages,
• 3.) a layer (c) of a thermoforming sheet,

wherein at least the thin film (a) or the thermoforming film (c) and the laminating adhesive (b) are optically transparent.

Pressure markers are known as such. The DE 100 65 389 A1 discloses a method for positioning film webs of a packaging device, in which depressions are deep-drawn in a first film web and a second film webs is applied as a cover film. For an exact positioning of the two films one above the other detection means are provided which accommodate any deviations.

The printed image is preferably a gravure image and is applied in a manner customary for packaging gravure printing. For continuous processing, the rotary pressure, in particular the roller rotation pressure seems most suitable, which can also be performed on both sides. The print image can be one or more colors.

As a thin film is basically any suitable for rapport eligible gravure printing in continuous processes, sufficiently elastic packaging film suitable. These may be single foils or thin composite foils, as known in packaging technology. Composite films may contain additional integrated layers, such as. As gas barrier layers, layers with security features, layers with special physical properties, eg. B. special electrical or magnetic properties, or additional outer layers such. B. contain sealing layers. The possibilities for additional layers and composites are known to the artisan working in this field so that he can select a suitable thin film. A good overview of generally applicable in the packaging field films, which, unless expressly stated otherwise, are also suitable for the invention, is from "Hans Domining House" The Plastics and their properties ", VDI Verlag, 4th Edition, 1992" refer ,

The thin film to be printed on one or both sides is preferably a stretched (mono- or biaxially oriented) or unstretched film of thermoplastic polymers, preferably of polyolefin, more preferably of polyethylene (especially LDPE, HDPE, LLDPE, mPE) or polypropylene, of polyamide or polyester. The polymers may be pure homopolymers or mixtures or alloys of several homopolymers or copolymers with the stated polymers or other polymers in the form of random or block copolymers.

The stretched films must not be those that have lost their elasticity through strong stretching and practically complete mono- or biaxial orientation, but should be limited stretching and / or special treatment of part-oriented films which thereby deep-draw can be. These properties can be achieved by special manufacturing processes of the thin film.

The thin film is between 10 μm and 100 μm thick.

In a preferred embodiment, the thin film is optically transparent, preferably crystal clear. The printed image applied to the thin film is then to be viewed through the thin film. The thin transparent cover film gives the printed image high brilliance and good color clarity and also protects the printed image from scratching. Even a visually fully transparent thin film can be printed on both sides. The thicker thermoforming film is then laminated to lie correctly on one of the printed pages.

In the case of an optically transparent thin film, the thermoforming sheet may also be transparent, but it may also be milky cloudy or opaque and colored as desired.

In another embodiment, the thin film of non-transparent milky cloudy or opaque or color opaque colored material, preferably dyed polyolefin, in particular white colored polyethylene. In this case, both the laminating adhesive and the thermoforming sheet are optically transparent; the printed image is then viewed through the optically transparent thermoforming film. The non-transparent thin film can be printed on both sides with two completely independent images or inscriptions, which can then only be perceived by one or the other side of the film. In this case, the image is usually less brilliant, on the other hand, for self-deep drawing a package too thin film with two-sided printing by two surrounding thermoforming particularly well amplified, so that this method, especially in severe distortions by particularly highly deforming thermoforming offering.

The thermoplastic deep-drawing film suitable for the invention preferably consists of one of the materials polyester, preferably amorphous polyester, polyolefin (in particular polyethylene, polypropylene), polycarbonate, polyamide, polyvinyl chloride, polystyrene, polymethylene methacrylate, or mixtures, alloys or copolymers with or between these plastics. The person skilled in a sufficient number of materials for thermoforming sheets are known from which can be selected. Again, reference is made to "The Plastics and Their Properties" (supra).

However, it is essential for the invention that the composite of thin, repeatable printable film and thermoformable film, which is produced by laminating with a laminating adhesive, can not move or loosen during thermoforming. It is an essential aspect of the invention that the thin, in itself for the thermoforming mechanically unstable film in combination with the thermoforming sheet is supported so that both films can be thermoformed together, suffering neither the printed image nor the thin film. The elasticity and processing properties of both films must therefore be coordinated with each other, or be selected so that the common thermoforming leads to an optimal result. As has been found, among other things, the above material choices for thermoforming film and thin film lead to good results. Further positive effects for the bond strength can be achieved by corona pretreatment of individual films of the composite.

The thermoforming sheet used in the invention should have a thickness of 100 μm to 1000 μm.

The printed thin film and thermoforming film are laminated to each other with the aid of laminating adhesive, d. H. connected to a layer of laminating adhesive. The laminating adhesive used can be an adhesive customary in composite film technology, preferably this is a two-component polyurethane adhesive. The adhesive is also selected according to the materials to be joined; Also suitable are one-component systems, adhesives based on hotmelt or warmmelt and dispersion adhesives. Most of the laminating adhesives commonly used in film composite technology are transparent, so that they can also be used for the exemplary embodiments in which the printed image is to be viewed through a plurality of other layers resting on the printed thin film, in particular laminating adhesive layer and thermoforming film.

In further particular embodiments, the web-shaped printed and thermoformable packaging film according to the invention in its layer sequence a) -b) c) can be supplemented to a layer sequence c) -b) -a) -b) -c), or a) -b) -c ) -b) -a. In the layer sequence c) -b) -a) -b) -c), the thin film printed in a correct rapport during deep drawing is supported particularly well by the thicker thermoforming foils surrounding it. At the same time, the image quality improves over a simple counterpressure on a thick thermoforming sheet, when the thermoforming layers arranged around the thin middle layer are each only half as thin. In the case of the layer sequence a) -b) -c) -b) -a), one obtains on both sides of a deep-drawn packaging element with the aid of two highly transparent thin films a) printed on one side, which are laminated to an inner thermoforming film by laminating with laminating adhesive especially colourfast raportgerecht generated pressure. Here are two completely independent print images possible. The carrier film should be milky, opaque or colored in this case.

At the prepared for deep drawing printed, web-shaped multi-layer packaging film additional layers may be provided in addition. Thus, in a preferred embodiment, a sealing layer may be applied externally, preferably based on a sealable polyolefin. The sealing layers, which consist of the customary materials (optionally with integrated gas or Vapor barrier layers) can also be designed for peelable sealing compounds. The sealing layer is sealable, preferably heat-sealable. The sealing process is described, for example, in "Hernandez / Selke / Culter:" Plastics Packaging ", Carl Hanser Verlag, Munich 2000".

By means of an external sealing layer, it is possible, for example, to close thermoformed packaging elements produced from the film with a sealed-on covering layer. A pressure-sensitive adhesive layer of pressure-sensitive permanent adhesive for producing a resealable packaging can furthermore be provided below the outer sealing layer. The pressure-sensitive adhesive layer may also be coextruded within the sealant layer (eg: PE / pressure-sensitive adhesive layer / PE). You can z. Example of hotmelts, preferably based on styrene / butadiene block copolymers or styrene / isoprene / butadiene block copolymers, from UV-crosslinking hot melt or pressure-sensitive adhesives based on dispersions (eg., Acrylic resins or natural or synthetic rubber), currently for dispersion adhesives acrylic acid and / or methacrylic acid copolymers, in particular acrylic acid and / or methacrylic acid-styrene copolymers are preferred.

In known and customary manner may be integrated into the sealing layer or be present within the thin printed film, a gas barrier layer, preferably of ethylene vinyl alcohol copolymer.

• 1. Bedrucken einer dünnen, zwischen 10 μm und 100 μm dicken Einzel- oder Verbundfolie mit einer für rapportgerechten Endlosdruck ausreichenden Elastizität, einseitig oder beidseitig, wobei wenigstens einseitig in Laufrichtung der Bahn ein in gleichmäßigem Abstand stetig wiederkehrendes Muster (Rapport) und dem einzelnen Muster zugeordnete Druckmarkierungen aufgedruckt werden,
• 2. maßhaltiges Aufkaschieren einer Tiefziehfolie mit Hilfe eines Kaschierklebstoffs auf der bedruckten Seite oder einer bedruckten Seite.

In accordance with the above description, the invention therefore comprises a process for the production of a printed, multilayer multi-layered packaging film, which is subsequently thermoformed in a further processing step, which is characterized by the following process steps:

• 1. Printing a thin, between 10 .mu.m and 100 .mu.m thick single or composite film with sufficient rapportgerechten continuous printing elasticity, one-sided or double-sided, at least one side in the direction of the web a uniformly spaced uniformly recurring pattern (repeat) and the individual pattern associated print marks are printed,
• 2. Dimensionally laminating a thermoforming sheet with the aid of a laminating adhesive on the printed side or a printed side.

The printed image is preferably applied to the running example of a film roll thin and sufficiently elastic single or composite foil one or both sides in the rotary printing, preferably in the rotary rotary printing. For this purpose, suitable printing machines for printing on packaging films are available (preferably gravure or substitute flexographic printing). The longitudinal repeat of the pattern is regulated by the web tension tension, for example by means of roller prints.

A distortion of the printed image to be expected by subsequent deep drawing is taken into account in the areal print. For this purpose, computer programs are available which can mathematically detect and compensate for a corresponding distortion by, for example, compensating for an anticipated stretching in the direction x by a proportional compression of the area image printed in the direction of the drawing (eg with programs from Artwork Systems Group NV Belgium). Such printed image equalization even for complicated deformations, as they may arise, for example, by more complicated thermoforming blow mold combinations, calculable. Such a more complex thermoforming process is for example from the DE 197 06 797 A1 known. Also suitable for such methods is the thermoformable, ready to print, taking into account any distortions printed multi-layer packaging film according to the invention.

For dimensionally accurate lamination of the thermoforming film with the aid of laminating adhesive (or lamination of the thin film onto the thermoforming film), the one or two-component systems described above are used, preferably a two-component polyurethane laminating adhesive as commercially available for these applications. The lamination preferably takes place with an adhesive application weight of 2 to 4 g / m ² . The tension of the films on the laminating machine is regulated so that the resulting during printing rapport is kept in the laminating, as is the case for other laminating tasks of the prior art.

In order to additionally improve the bond strength and thus the thermoformability of the films, individual films can be subjected to corona pretreatment. The methods suitable for this purpose are known to the practitioner familiar with composite films.

The rapportgerecht printed, thermoformable multi-layer packaging film can be supplied as roll material, ie in the form of elongated, generally wound printed webs to a thermoforming processing plant and used there. However, the deep-drawing process can also be done directly at the film producer. In both cases, the composite packaging film according to the invention is thermoformed in a further processing step in a rapport-appropriate manner in association with the printing marks and thereby formed into packaging elements.

The thermoformed or thermoformed packaging elements may preferably be troughs or blister dishes, other elements are also possible.

• – Befüllen der Verpackungselemente mit Verpackungsgut (auch auf gesonderter Anlage möglich);
• – Verschließen der Verpackungselemente;
• – Trennen der Verpackungselemente, vorzugsweise durch Stanzen oder Schneiden;
• – gegebenenfalls Prüfen, Sortieren, Perforieren usw..

The further shaping of the deep-drawn or thermoformed packaging elements can be followed by various other process steps in the usual way:

• - filling the packaging elements with packaged goods (also possible on separate system);
• - closing the packaging elements;
• - Separating the packaging elements, preferably by punching or cutting;
• - if necessary check, sort, perforate, etc.

Preferably, trough or blister-shaped packaging elements are closed by sealing a cover layer. Suitable cover layers (or covers) are generally known to the person skilled in the art.

In the following the invention will be explained in more detail by means of examples.

The example films have the following basic compositions, with individual adjoining layers being offset from each other by a slash (/). "Layers" are generally individual films of polymers. As far as possible adjacent individual films or polymer layers can also be coextruded and then connected to other layers. In addition, an adhesion promoter (eg polyethylene grafted with maleic acid) may be provided at the position "/" in the individual case, which is not considered here as a separate layer. However, printed images (text or pictures, one or more colors) applied between the layers or on the outside are displayed as layers in order to make their position clear:
thin film / printed image / KK / thermoforming film;
Printed image / thin foil / printed image / KK / thermoforming foil;
thin film / printed image / KK / thermoforming film / KK / printed image / thin film;
Thermoforming film / KK / printed image / thin film / printed image / KK / thermoforming film;
in each case as above, in addition to the thermoforming foil subsequently ../KK/Siegelschicht
in each case as above, in addition to the thermoforming foil subsequently ... / pressure-sensitive adhesive / sealing layer
KK: laminating adhesive.
preferred material combinations for a thin film and a thermoforming film combinable therewith are: Thermoforming film Rapportgerecht printable thin film APET Polyamide, polyester, polyolefin (PP, PE) PP Polyamide, polyester, polyolefin (PP, PE) PVC Polyamide, polyester, polyolefin (PP, PE) PC Polyamide, polyester, polyolefin (PP, PE) PS Polyamide, polyester, polyolefin (PP, PE) PMMA Polyamide, polyester, polyolefin (PP, PE) in the following individual examples mean: PA: polyamide KK: laminating adhesive APET: amorphous polyester PE: polyethylene PP: polypropylene BOPET: biaxially (partially) oriented postformable polyester EP-Pot: Ethylene-propylene copolymer EVOH: Ethylene vinyl alcohol copolymer HM: adhesive

Example 1:

• PP (30 μm) / printed image / KK / PP (300 μm)
• (thin foil / printed image / KK / thermoforming foil)
• Basic example of the inventive deep-drawable packaging film with fully transparent thin layer and through this visible printed image. The printed image is a computer-distorted areal printed image, which compensates for the later distortion during deep drawing.

Example 2:

• PA (40 μm) / printed image / KK / PVC (500 μm) / KK / PE (50 μm)
• (thin film / printed image / KK / thermoforming film / KK / sealing layer)
• Example 1 corresponding film with additional sealing layer for packaging, which are sealed by heat sealing.

Example 3:

• BOPET (12 μm) / printed image / KK / PP (200 μm) / KK / EP-Copo
• (thin film / printed image / KK / thermoforming film / KK / sealing layer)
• Example 2 corresponding film with a different composition

Example 4:

• PA (30 μm) / printed image / KK / APET (300 μm) / KK / PE (50 μm)
• (thin foil / printed image / KK (thermoforming foil / KK / sealing layer)

Example 5:

• PP (40 μm) / printed image / KK / APET (500 μm) / KK / PE (70 μm)
• (thin film / printed image / KK / thermoforming film / KK / sealing layer)

Example 6:

• BOPET (12 μm) / printed image / KK / APET (200 μm) / KK / EP-Copo
• (thin film / printed image / KK / thermoforming film / KK / sealing layer)

Example 7:

• APET (150 μm) / KK / printed image / white PE (90 μm) / printed image / KK / APET (200 μm) / KK / PE (35 μm) / EVOH (5 μm) / PE (35 μm)
• (Thermoforming film / KK / printed image / non-transparent thin film / printed image / KK / thermoforming film / KK / sealing layer, here with gas barrier)
• The rapport-compatible and double-sided printed thin film is enclosed between two thermoforming films. As a result, the thin film is particularly well protected during deep drawing. The thermoforming films, the sealing layer and the laminating adhesive are transparent. It results on both sides of a still legible print image (thickness of thermoforming film about 100-200 microns, or half the thickness of the thermoforming films otherwise used).

Example 8:

• PA (30 μm) / printed image / KK / APET (300 μm) / KK / PE (50 μm) / HM (20 μm) / PE (50 μm)
• (thin film / printed image / KK / Tiefziohfolie / KK / sealing layer with integrated pressure-sensitive adhesive layer)
• corresponds to Example 4, but here with another sealant layer

Example 9:

• PP (30 μm) / printed image / KK / PP (150 μm) / KK / printed image / PP (30 μm)
• (thin film / printed image / KK / thermoforming film / KK / printed image / thin film)

Example 10:

• PP (30 μm) / printed image / KK / PP (150 μm) / KK / printed image / PP (30 μm) / KK / EP-Copo (30 μm)
• (thin film / printed image / KK / thermoforming film / KK / printed image / thin film / KK / sealing layer)
• as Example 9 with additional sealing layer

Example 11:

• PA (30 μm) / printed image / KK / APET (300 μm) / HM (20 μm) / PE (30 μm)
• as Example 8, but pressure-sensitive adhesive applied directly to thick film and laminated with sealing layer.

Claims (20)

Printed web-shaped multilayer packaging film for repeat-compliant deep drawing, which contains the following layer sequence: a layer (a) of a thin, between 10 .mu.m and 100 .mu.m thick single or composite film with sufficient for Rapportgerechten continuous printing elasticity and applied with at least one side printed image, wherein the printed image in the form of a recurring in the running direction of the web recurring pattern and the individual patterns (repeat) are assigned pressure markings, a full-surface adhesive layer (b) of laminating adhesive on the printed or one of the printed pages, a layer (c) of a thermoforming film, wherein at least the film of the layer (a) or the thermoforming film and the laminating adhesive are optically transparent. Packaging film according to claim 1, characterized in that the printed image is a gravure image. Packaging film according to claim 1 or 2, characterized in that a stretched, stretch-oriented or unstretched film of thermoplastic polymers is used as the thin film, preferably of polyolefin, preferably polyethylene (especially LDPE, HDPE, LLDPE, mPE) or polypropylene, polyamide or Polyester, wherein the polymers are pure homopolymers, mixtures or alloys of several homopolymers or copolymers with said or other polymers (in the form of random or block copolymers). Packaging film according to one of claims 1 to 3, characterized in that the thin film is optically transparent, preferably crystal clear. Packaging film according to one of claims 1 to 3, characterized in that the thin film of non-transparent milky cloudy or opaque or color opaque colored material, preferably from colored polyolefin, especially white colored polyethylene, and the laminating adhesive and the thermoforming sheet optically transparent are. Packaging film according to claim 4 or 5, characterized in that the thin film is printed on both sides. Packaging film according to one of claims 1 to 6, characterized in that the thermoplastic thermoforming sheet of one of the materials polyester, preferably amorphous polyester, polyolefin (especially polyethylene, polypropylene), polycarbonate, polyamide, polyvinyl chloride, polystyrene, polymethylene methacrylate, or mixtures, alloys or Copolymers with or between these plastics. Packaging film according to one of claims 1 to 7, characterized in that the thermoforming film has a thickness of 100 microns to 1000 microns. Packaging film according to one of claims 1 to 8, characterized in that the laminating adhesive is a two-component polyurethane adhesive. Packaging film according to one of claims 1 to 9, characterized in that the layer sequence a) -b) -c) is added to a layer sequence c) -b) -a) -b) -c) or a) -b) -c ) -b) -a). Packaging film according to one of claims 1 to 10, characterized in that on the outside of the multi-layer packaging film a sealing layer is present, preferably based on a sealable polyolefin. Packaging film according to one of claims 1 to 11, characterized in that integrated into the sealing layer or immediately below the outer sealing layer, a pressure-sensitive adhesive layer for reclosing a Folio manufactured packaging is provided. Packaging film according to one of claims 1 to 12, characterized in that integrated into the sealing layer or within the thin printed film, a gas barrier layer is present, preferably of ethylene vinyl alcohol copolymer. A process for the production of a printed, multilayer multi-layer packaging film, which is subsequently thermoformed in a further processing step, characterized by the following steps: - Printing a thin, between 10 .mu.m and 100 .mu.m thick single or composite film with sufficient rapportgerechten continuous printing elasticity, one-sided or double-sided, at least one side in the direction of the web a uniformly spaced uniformly recurring pattern (repeat) and the individual pattern assigned Printing marks are printed, - Dimensionally laminating a thermoforming sheet with the aid of a laminating adhesive on the printed side or a printed side. A method according to claim 14, characterized in that the printed image, if necessary, on both sides, in rotary printing, preferably web rotation pressure is applied. A method according to claim 14 or 15, characterized in that the to be expected by subsequent deep drawing distortion of the printed image is taken into account in the areal printing. Method according to one of claims 14 to 16, characterized in that a rapport-appropriate deep drawing of the resulting multi-layer packaging film in association with the pressure marks and thereby forms a shape of the film to packaging elements. A method according to claim 17, characterized in that the packaging elements are formed into troughs or blister dishes. Method according to claim 17 or 18, characterized in that at least one of the following steps follows: - filling the packaging elements with packaged goods; - closing the packaging elements; - Separate the packaging elements, preferably by punching or cutting. A method according to claim 19, characterized in that the closure trough or blisterförmiger packaging elements by sealing a cover layer takes place.