DE102023103371A1 - Multilayer plastic laminate and process for its production - Google Patents

Abstract

Multi-layer recyclable plastic laminate (1) with a base layer (2) which is made from a given plastic, with a second layer (4) which is arranged at least indirectly on a first surface (2a) of this base layer (2) and which is made from a given plastic, and preferably at least one first cover layer (6) which is arranged at least indirectly on a second surface (2b) of the base layer (2), characterized in that the second layer (4) is or has a layer produced in an extrusion lamination process which at least indirectly connects at least one further third layer (8) to the base layer (2), wherein the base layer (2), the second layer (4) and the third layer (8) are furthermore made from the same or a related polyolefin, wherein the polyolefin proportion of this polyolefin in the plastic laminate is preferably greater than 70 vol.%, preferably greater than 80 vol.%, preferably greater than 90 vol.% and preferably greater than 95 vol.%.

Description

The present invention relates to a packaging material and in particular to a plastic laminate for packaging purposes. Such plastic laminates have long been known from the prior art. Recently, however, the packaging industry in particular has placed increasing emphasis on the sustainability and recyclability of such packaging materials. To this end, attempts are being made to avoid the use of materials that cannot be recycled or are difficult to recycle, or to dispense with them altogether.

In particular, the packaging industry as a whole is currently facing a transition from non-recyclable packaging materials to recyclable alternatives. Due to the existing infrastructure and the economic advantages, the main focus of this transition is on the design of laminates that are accessible for mechanical recycling.

The applicant has set itself the objective of improving the recyclability of such plastic laminates and proposes to replace packaging composed of different material groups with packaging made of only a single substance group.

In a large number of structures known from the state of the art, the printed image is not printed on one of the outer layers of a packaging material. Rather, it is known from the state of the art to apply the printed image in the so-called sandwich structure. Although this has the advantage that the printed image is protected from external influences, it represents a significant disadvantage in the subsequent recycling process, as the printing ink cannot be removed from the packaging laminate. It is also known to combine different films or layers into a laminate using adhesives, for example based on polyurethane or acrylates.

During subsequent recycling or regranulation of such laminates, which contain foreign substances in the form of printing inks, adhesives, incompatible plastics or coatings, these can lead to contamination in the recyclate, which can result in optical defects in the form of specks, streaks, etc. in subsequent processing of these recyclates, e.g. into plastic films. In addition, the above-mentioned foreign substances can give rise to migration-capable degradation products in the recycling process, which contribute to further contamination of the recyclate and prevent the reuse of such recyclate for food packaging or packaging for use in the medical sector.

The present invention is therefore based on the object of producing packaging materials and in particular laminates which enable reuse and/or satisfactory recycling of used packaging and the use of recyclate from such packaging for packaging materials for the food or medical sector.

This object is achieved according to the invention by the subject matter of the independent patent claims. Advantageous embodiments and further developments are the subject matter of the subclaims.

A multilayer and in particular recyclable plastic laminate according to the invention has a base layer which is made from a given plastic. Furthermore, a second layer is provided which is arranged at least indirectly on a first surface of this base layer and which is made from a given plastic and which connects at least one further third layer at least indirectly to the base layer. Furthermore, at least one first cover layer is preferably provided which is arranged at least indirectly on a second surface of the base layer. It would also be possible to provide a print and/or a printed layer in addition to or instead of this first cover layer.

Preferably, the plastic laminate is suitable and intended for packaging food and/or pharmaceutical products.

Furthermore, at least the base layer as well as the second and third layers are made of the same or a similar plastic and in particular polyolefin.

Related plastics are understood to mean in particular but not exclusively different plastics from a higher-level group of plastics, such as in particular but not exclusively different polyolefins. When using such different plastics, however, the recycling conditions in particular must be observed.

Preferably, an embodiment of the multilayer plastic laminate is provided in which the plastic-containing layers comprise a predetermined percentage by weight of a single polyolefin. Unless otherwise stated within the scope of this invention, all percentages are to be understood as percentages by weight.

In this context, the presence of a single polyolefin should preferably be understood to mean that further polyolefins could be present, but one type of polymer is present in at least a predetermined minimum proportion in one of the plastic-containing layers.

In this context, “a type of polymer” should be understood in such a way that the polymers can have different properties and can also differ in their molecular structure (for example in the (average) chain length) but are based on the same monomers.

Mixtures of different olefinic monomers could also be present, but these are arranged differently in the polymers of the plastic-containing layers, for example they differ in the sequence in the polymer (random, alternating, block-wise). This has proven to be particularly advantageous for recycling, as it can reduce the number of different polymers to be recycled. Examples, but not limited to, include ethylene-vinyl alcohol copolymer (EVOH) and/or ethylene-vinyl acetate copolymer (EVA).

The plastics used are particularly preferably polyolefins, in particular polypropylene (PP) or polyethylene (PE).

Preferably, a polyolefin content of the polyolefin in the plastic laminate (or generally a content of this plastic) is greater than 70 vol.%, preferably greater than 80 vol.%, preferably greater than 90 vol.% and preferably greater than 95 vol.%.

In the packaging industry, such structures are often referred to as monomaterial packaging. A monomaterial is also understood to mean a plastic laminate that contains different types of a specific polyolefin, for example a mixture of polyethylene of different densities, such as low-density PE (LDPE), medium-density PE (MDPE) or high-density PE (HDPE). However, a mixture of different polypropylenes such as isotactic polypropylene (PP-it), atactic polypropylene (PP-at) or syndiotactic polypropylene (PP-st) is also conceivable, or a mixture of a specific polyolefin with a plastic that is sufficiently compatible with the polyolefin in terms of processability, such as, but not exclusively, EVOH and/or EVA.

A recyclable plastic laminate is understood in particular to mean that at least parts of this material can be recycled and in particular can be (re)processed into further products. Preferably, at least 70% of the mass fraction of the plastic laminate can be recycled, preferably at least 80% and particularly preferably at least 90% and very particularly preferably at least 95%.

It is therefore proposed to use the same or similar materials for two or more layers and/or plies, which offers a significant advantage in particular with regard to recyclability.

In a preferred embodiment, the base layer has at least one further layer. The base layer itself is therefore preferably constructed in multiple layers.

Advantageously, the base layer comprises at least a substrate layer, a bonding layer and a barrier layer.

Particularly preferably, the base layer consists of a substrate layer, a bonding layer and a barrier layer.

In a further advantageous embodiment, the substrate layer comprises HDPE, wherein preferably a proportion of HDPE is greater than 60 vol.% (and/or greater than 60 wt.%), preferably greater than 70 vol.% (and/or greater than 70 wt.%) and particularly preferably greater than 80 vol.% (and/or greater than 80 wt.%).

The HDPE content can be as high as 100 vol.%, although 100 vol.% is usually never reached due to common additives. The rest is a compatible polyolefin material. Basically, any type of polyethylene can be considered as a compatible polyolefin material, such as linear low-density polyethylene (LLDPE), linear metallocene low-density polyethylene (mLLDPE) or ethylene copolymers, such as ethylene-vinyl acetate copolymer (EVA).

Furthermore, polypropylene (PP) or a cyclo-olefin copolymer (COC) can be used as a compatible polyolefin material in a maximum amount of 20 vol.%. The HDPE and the compatible polyolefin material can be present as a mixture in the substrate layer. The substrate layer can also be multi-layered (extruded or co-extruded) with one (or more) HDPE layer(s) and one (or more) layer(s) of the compatible polyolefin material. The thickness of the base layer is preferably 5 to 35 µm.

The barrier layer preferably consists of (or comprises) a barrier polymer, i.e. a polymer with a sufficient barrier repellency, particularly but not exclusively against oxygen, water (vapor) and/or aroma. EVOH is preferably used as a barrier polymer. The barrier layer preferably has a thickness of 2-8 µm. The low thickness of the barrier layer preferably does not impair the recyclability.

The barrier layer is preferably connected to the substrate layer by the connecting layer. This should ensure sufficient bonding. Suitable connecting layers preferably consist of polymers with increased polarity, for example based on maleic anhydride-modified polyolefins (such as PE or PP), ethylene-vinyl acetate copolymer (EVA), ethylene/acrylic acid copolymer (EAA), ethylene-butyl acrylate copolymer (EBA), or similar polyolefin copolymers. The thickness of a connecting layer is advantageously 1 to 5 µm.

Preferably, the proportion of polar molecular groups is at least 5%, preferably at least 10%. For example, a 30% mixture of an EAA with 20% acrylic acid monomer content with an LDPE can be used as material for the connecting layer.

In another embodiment, the base layer comprises only a single layer of a polyolefin or of a blend of polyolefin and a compatible polyolefin material as described above.

Preferably, the second layer comprises or is a (connecting) layer produced by a lamination process, particularly preferably by a laminating process and/or preferably by an extrusion laminating process, which connects a (further) third layer at least indirectly to the base layer.

It would also be conceivable to use an adhesive lamination (e.g. based on polyurethane (PU) or acrylate) in the lamination process. In particular, lamination with a non-polyolefin adhesive specially developed for the recycling process might be suitable, but still produce recyclate that is suitable for food/pharmaceutical packaging.

In a further preferred embodiment, the plastic laminate has a third layer or at least three layers are provided.

In a further preferred embodiment, the third layer comprises or is a polyolefin and preferably represents an outer layer of the plastic laminate. Preferably, the third layer comprises or is an activatable, in particular a thermally activatable layer and has a sealing start temperature which is ≤ 160°C, preferably ≤ 150°C, preferably ≤ 140°C, preferably ≤ 130°C, preferably ≤ 120°C, preferably ≤ 110°C, preferably ≤ 100°C, preferably ≤ 90°C and preferably ≤ 80°C.

In a further advantageous embodiment, the plastic laminate has a further or fourth layer, wherein this further layer is preferably arranged at least indirectly between the second layer and the third layer.

Preferably, this fourth layer is a film, preferably produced by extrusion, from a plastic that is the same or similar to the base layer and the third layer.

In a further advantageous embodiment, the plastic laminate has a fifth layer, wherein this fifth layer preferably comprises or is a (connecting) layer produced by a lamination process, particularly preferably by a laminating process and/or preferably by an extrusion laminating process, which connects the third layer at least indirectly to the fourth layer.

It would also be conceivable to use an adhesive lamination (e.g. based on polyurethane (PU) or acrylate) in the lamination process. In particular, lamination with a non-polyolefin adhesive specially developed for the recycling process might be suitable, but still produce recyclate that is suitable for food/pharmaceutical packaging.

In a further preferred embodiment, this fifth layer comprises the same or similar materials as the second layer.

Particularly preferably, the said layers (base layer, second layer, third layer, fourth layer and/or fifth layer) are predominantly and particularly preferably completely composed of an identical or similar plastic.

Preferably, the base layer and/or the fourth layer has a mass fraction of at least 75%, preferably of at least 80%, preferably of at least 90% and preferably of at least 95% and preferably of at least 97% and preferably of at least 99% of this plastic.

Preferably, the third layer has a mass fraction of at least 85%, preferably of at least 90% and preferably of at least 95% and preferably at least 97% and preferably at least 99% of this plastic.

The second layer and/or the fifth layer preferably has a proportion of at least 75%, preferably at least 80%, preferably at least 85%, preferably at least 90% and preferably at least 95% of an identical or similar plastic or its base monomer, preferably ethylene or propylene, as the base layer and the third layer. The remaining proportion can be made up of polar comonomers, such as preferably acrylic acid (AA), vinyl acetate (VA), maleic anhydride, butyl acrylate, to improve adhesion, for example to metallized films.

In a further advantageous embodiment, at least one of the layers and in particular the base layer, the third layer and/or the fourth layer additionally comprises an inorganic coating which contains at least one substance selected from a group comprising a metal, a semimetal, a metal oxide, a semimetal oxide, aluminum, copper, titanium, gold, silver, aluminum oxide (AlOx), silicon oxide (SiOx), or mixtures thereof and which can provide the plastic laminate with barrier properties, in particular but not exclusively against oxygen, water (vapor) and/or aroma.

In a further preferred embodiment, a barrier lacquer with barrier properties, in particular but not exclusively against oxygen, water (vapor) and/or aroma, is applied to at least one of the layers by means of a method known from the prior art. The barrier lacquer preferably comprises a material compatible with polyolefins and is applied with an application weight of between 0.5 g/m ² and 5 g/m ² .

In a further advantageous embodiment, at least one of the layers and in particular the base layer, the third layer and/or the fourth layer comprises or is a film produced in an extrusion process, preferably a film produced in an extrusion process and stretched in at least one direction. In a preferred embodiment, at least one of the layers and in particular the base layer, the third layer and/or the fourth layer is multi-layered.

The cover layer is preferably arranged at least indirectly on the second surface of the base layer. In a preferred embodiment, the cover layer is a coating and serves to protect the printing ink underneath. Possible designs of the cover layer include, for example but not exclusively, polyurethane (PU), polyvinyl butyral (PVB), nitrocellulose (NC) and/or acrylate-based overprint varnishes.

The covering layer is preferably temperature-resistant up to 160°C, preferably up to 180°C, particularly preferably up to 200°C. The temperature resistance is defined in the context of this invention such that the covering layer neither sticks nor undergoes visible deformation when it comes into contact with a hot sealing jaw.

Particularly preferably, the cover layer is arranged on the outside with respect to the plastic laminate and/or has a surface which is an outer surface of the plastic laminate.

In a further preferred embodiment, the plastic laminate has a print and/or imprint (in particular having colors) and this print and/or imprint is preferably arranged at least indirectly or preferably directly on the second surface of the base layer.

In a preferred embodiment, this print and/or imprint is provided instead of the first cover layer.

Particularly preferably, this print is a print applied by means of a printing process known from the prior art, such as, but not limited to, gravure printing, flexographic printing or digital printing.

In a further advantageous embodiment, a further layer is preferably arranged at least indirectly between the printing layer and the base layer. In a further advantageous embodiment, this layer is a coating which promotes the detachment of the printing ink from the base layer.

Preferably, the plastic laminate extends in a longitudinal direction, a width direction perpendicular to the longitudinal direction and a thickness direction perpendicular to the longitudinal direction and the width direction.

Preferably, the first and second surfaces of the base layer extend in the longitudinal direction and in the width direction.

Preferably, the base layer has a thickness (extending in the thickness direction) that is greater than 5 µm, preferably greater than 10 µm and particularly preferably greater than 15 µm.

Preferably, the base layer has a thickness (extending in the thickness direction) that is less than 60 µm and preferably less than 50 µm.

Preferably, the second layer has a thickness (extending in the thickness direction) that is greater than 0.5 µm, preferably greater than 1 µm, preferably greater than 2 µm and particularly preferably greater than 3 µm.

Preferably, the second layer has a thickness (extending in the thickness direction) which is less than 20 µm, preferably less than 15 µm and particularly preferably less than 10 µm.

Preferably, the cover layer has a thickness (extending in the thickness direction) that is greater than 0.3 µm, preferably greater than 0.7 µm, particularly preferably greater than 1.5 µm.

Preferably, the cover layer has a thickness (extending in the thickness direction) which is less than 10 µm, preferably less than 8 µm, particularly preferably less than 5 µm.

Preferably, the coating between the base layer and the print has an application weight which is less than 10g/m ² , preferably less than 8g/m ² and preferably less than 5g/m ² .

Particularly preferably, the coating between the base layer and the print has an application weight which is greater than 0.5 g/m ² , preferably more than 1 g/m ² and preferably more than 2 g/m ² .

Preferably, the third layer has a thickness (extending in the thickness direction) that is greater than 5 µm, preferably greater than 10 µm and particularly preferably greater than 15 µm.

Preferably, the third layer has a thickness (extending in the thickness direction) which is less than 150 µm, preferably less than 100 µm, particularly preferably less than 70 µm.

Preferably, the fourth layer has a thickness (extending in the thickness direction) that is greater than 5 µm, preferably greater than 10 µm and particularly preferably greater than 15 µm.

Preferably, the fourth layer has a thickness (extending in the thickness direction) that is less than 60 µm and preferably less than 50 µm.

Preferably, the fifth layer has a thickness (extending in the thickness direction) that is greater than 0.5 µm, preferably greater than 1 µm, preferably greater than 2 µm and particularly preferably greater than 3 µm.

Preferably, the fifth layer has a thickness (extending in the thickness direction) which is less than 20 µm, preferably less than 15 µm and particularly preferably less than 10 µm.

Preferably, the plastic laminate has a thickness (extending in the thickness direction) that is greater than 10 µm, preferably greater than 20 µm, preferably greater than 30 µm, preferably greater than 40 µm.

Preferably, the plastic laminate has a thickness (extending in the thickness direction) which is less than 400 µm, preferably less than 350 µm, preferably less than 300 µm, preferably less than 250 µm.

The present invention is further directed to a regranulate which is produced (at least partially and preferably completely) from a plastic laminate of the type described above. The regranulate is preferably produced from at least 70%, preferably at least 80%, preferably at least 90% of the plastic laminate of the type described above.

Regranulates are plastics that are produced when plastic waste is recycled. The waste is usually shredded, washed, dried, melted and formed into granules again to create regranulates. Regranulates can then be used and processed again as raw materials.

Today, there is a widespread requirement that the plastic granules to be processed during the extrusion of plastic films contain at least a proportion of plastic recyclate. Plastic recyclate is obtained from the recycling of production waste and in particular from the recycling of waste that accrues from end users and is returned via suitable collection and sorting systems as part of the circular economy. In the mechanical recycling process, plastic waste is mechanically shredded and processed into plastic recyclate in the form of plastic regranulate. The plastic waste is sorted beforehand in order to obtain plastic recyclate that is as pure as possible. Against this background, as mentioned above, the packaging materials (and/or the materials of the individual components) are advantageously composed of a single polymeric component, such as in particular but not exclusively polyethylene or polypropylene.

Due to the inventive arrangement of the printing ink on the outside of the plastic laminate, the printing ink can be removed from the packaging material in a washing process that takes place in the recycling process, which is not possible with This is not possible or only possible to a limited extent with structures known from the state of the art, with a non-external printing layer, and leads to the contamination in the plastic recyclate already described, which in turn excludes further use of such recyclates for films for direct food contact.

The pure plastic laminate described above therefore forms a good basis for the production and use of a plastic recyclate, which is used in extrusion, in particular but not exclusively in the cast film extrusion or blown film extrusion process, in order to produce high-quality films that can be used for direct food contact.

A major disadvantage of extrusion lamination compared to adhesive lamination is currently the high amount of waste generated during the lamination process. This is particularly problematic when it comes to small and medium print volumes / job sizes, which have become prevalent in recent years, especially due to the higher differentiation of different print designs.

The change from counter-printing in a sandwich structure to surface printing addresses this disadvantage in addition to the intended improved recyclability. With a limited number of layers or film combinations, the current manufacturing sequence can be changed from single productions to a process that provides semi-finished extrusion laminates, which can also be produced in high qualities and large quantities.

The print jobs can preferably be carried out based on already laminated stock material.

The present invention further relates to a film, wherein the film is produced (at least partially and preferably completely) with a regranulate of the type described above. This film preferably has a proportion of at least 50%, preferably at least 60%, preferably at least 70%, preferably at least 80%, preferably at least 90% of this regranulate. In addition to the regranulate, additives or new or non-recycled granulate can also be included.

Furthermore, the invention is directed to a plastic packaging which comprises a plastic laminate of the type described above and/or which is at least partially and preferably completely made from such a plastic laminate.

In particular, this plastic packaging is suitable and intended for packaging food and/or pharmaceutical products.

The present invention is further directed to a method for producing a plastic laminate, in particular a plastic laminate of the type described above, comprising the following steps.

In a first process step, an extrusion and in particular co-extrusion of a base layer takes place, which preferably has at least one substrate layer, a connecting layer and a barrier layer (which in particular consists of a barrier polymer or contains such a polymer).

In a further process step (in particular a second step following the first process step), the base layer is connected to a further layer by means of extrusion lamination.

In a further (particularly subsequent) process step, the base layer is printed.

Preferably, the steps mentioned here are carried out in the order given; in particular, printing is preferably carried out after the base layer has been bonded to the further layer.

Preferably, the co-extrusion is carried out by means of an extrusion process which is selected from a group of extrusion processes which includes cast film processes and blown film processes.

Preferably, the substrate layer consists of HDPE. In another preferred process, the barrier polymer is EVOH.

In a further preferred method, the base layer is stretched. This stretching preferably takes place before the base layer is connected to the further layer. The stretching preferably takes place in at least one and preferably in at least two directions.

In a further preferred method, a further or fourth layer is added.

Preferably, this fourth layer is connected to the base layer. Particularly preferably, the fourth layer is connected to the base layer by means of a lamination process and in particular by extrusion lamination.

In a further preferred method, this fourth layer is connected to the third layer. The fourth layer is particularly preferably connected to the third layer by means of a lamination method and in particular by extrusion lamination.

• 1 eine erfindungsgemäße Kunststofffolie in einer ersten Ausführungsform; und;
• 2 eine erfindungsgemäße Kunststofffolie in einer zweiten Ausführungsform

Further advantages and embodiments can be seen in the attached drawings. They show:

• 1 a plastic film according to the invention in a first embodiment; and;
• 2 a plastic film according to the invention in a second embodiment

1 shows a multilayer plastic laminate 1 according to the invention in a first embodiment. This laminate extends here in a longitudinal direction L, which is perpendicular to the plane of the figure, a width direction B and a thickness direction D.

A base layer 2 is provided which has a first surface 2a and a second surface 2b which is opposite the first surface 2a. Both surfaces 2a, 2b extend in the longitudinal direction L and the width direction B.

This base layer is preferably made of (particularly stretched) PE or (particularly stretched) PP. This ensures sufficient stability and/or the necessary mechanical properties.

The reference number 4 designates a second layer which is arranged on the first surface 2a. This second layer is preferably an extrusion lamination and/or an extrusion laminated layer.

This layer is preferably made of PE or PP. If the base layer 2 is made of PE, the second layer 4 is preferably also made of PE and if the base layer is made of PP, the second layer 4 is preferably also made of PP.

A coating 12 (printing pre-varnish) is optionally provided on the second surface 2b of the base layer and further preferably one or more printing inks 14. The coating 12 is preferably provided between the base layer 2 and the printing ink(s) 14.

This coating 12 or pre-printing varnish facilitates the removal of the printing ink 14 from the base layer 2.

The reference number 6 designates a cover layer which is arranged on the printing ink(s). In particular, this is a lacquer layer and in particular a transparent lacquer layer.

A further third layer 8, which preferably consists of (in particular blown) PE or CPP, is preferably arranged on the extrusion lamination 4 (i.e. the second layer). This further covering layer is preferably made of the same or a similar plastic as the base layer 2 and the layer 4.

It is advantageous that the third layer 8 consists at least partially of a polyolefin with a sealing start temperature below 100 °C, preferably below 80 °C.

In this way, the temperature difference between the melting point of the cover layer (see paragraph on cover layer) and the melting point of the third layer 8 is at least 60°C, preferably at least 80°C, further preferably at least 100°C and particularly preferably at least 120°C.

2 shows a further embodiment of a plastic film according to the invention.

In this embodiment, a further, fourth layer 16 is present between the second layer 4 and the third layer 8, which preferably consists of (in particular stretched) PP or (in particular stretched) PE. This further layer is also preferably made of the same plastic as the base layer. The further layer preferably comprises a metallized and/or AlOx/SiOx vapor-deposited layer.

Between this fourth layer 16 and the third layer 8, a further, fifth layer 18 is preferably provided, which is again preferably an extrusion lamination and/or an extrusion laminated layer. This layer is also preferably made of the same material as the base layer.

The applicant reserves the right to claim all features disclosed in the application documents as essential to the invention, provided that they are new individually or in combination compared to the prior art. It is also pointed out that features are also described in the individual figures which may be advantageous in themselves. The person skilled in the art immediately recognizes that a certain feature described in a figure can be advantageous even without adopting further features from this figure. Furthermore, the person skilled in the art recognizes that advantages can also arise from a combination of several features shown in individual or different figures.

Claims (17)

Multi-layer recyclable plastic laminate (1) with a base layer (2) which is made from a given plastic, with a second layer (4) which is arranged at least indirectly on a first surface (2a) of this base layer (2) and which is made from a given plastic, and preferably at least one first cover layer (6) which is arranged at least indirectly on a second surface (2b) of the base layer (2), characterized in that the second layer (4) is or has a layer produced in an extrusion lamination process which at least indirectly connects at least one further third layer (8) to the base layer (2), wherein the base layer (2), the second layer (4) and the third layer (8) are furthermore made from the same or a related polyolefin, wherein the polyolefin proportion of this polyolefin in the plastic laminate is preferably greater than 70 vol.%, preferably greater than 80 vol.%, preferably greater than 90 vol.% and preferably greater than 95 vol.%. Plastic laminate according to Claim 1 , characterized in that the base layer (2) has at least one further layer and preferably the base layer has at least one substrate layer, a connecting layer and a barrier layer. Plastic laminate (1) according to at least one of the preceding claims, characterized in that at least one of the layers (2, 8, 16) is stretched in at least one direction. Plastic laminate (1) according to at least one of the preceding claims, characterized in that the base layer (2) has a thickness which is greater than 5 µm, preferably greater than 10 µm and particularly preferably greater than 15 µm and/or the base layer (2) has a thickness which is less than 60 µm, preferably less than 50 µm. Plastic laminate according to at least one of the preceding claims, characterized in that the plastic film has a print (14) and this print is preferably arranged at least indirectly between the second surface (2b) of the base layer (2) and the first cover layer (6) and this print is particularly preferably provided instead of the first cover layer (6) and represents an outer layer of the plastic laminate (1) and is arranged at least indirectly on the second surface (2b) of the base layer (2). Plastic laminate according to at least one of the preceding claims, characterized in that a coating (12) is arranged between the base layer (2) and the print (14), this coating (12) having an application weight of less than 10 g/m ² , preferably less than 8 g/m ² and particularly preferably less than 5 g/m ² and/or this coating (12) having an application weight of more than 0.5 g/m ² , preferably more than 1 g/m ² , and particularly preferably more than 2 g/m ² and promoting the detachment of the print (12) in the recycling process. Plastic laminate (1) according to at least one of the preceding claims, characterized in that the first cover layer (6) is a thermally resistant coating with a temperature resistance of greater than 160°C, preferably greater than 180°C and particularly preferably greater than 200°C and a thickness of less than 10 µm, preferably less than 8 µm, particularly preferably less than 5 µm and/or with a thickness of more than 0.3 µm, preferably more than 0.7 µm, particularly preferably more than 1.5 µm. Plastic laminate (1) according to at least one of the preceding claims, characterized in that the plastic laminate has a fourth layer (16), wherein this further layer is preferably arranged at least indirectly between the second layer (4) and the third layer (8). Plastic laminate (1) according to at least one of the preceding claims, characterized in that the plastic laminate has a fifth layer (18) which at least indirectly connects the third layer (8) to the fourth layer (16) and preferably this fifth layer is or has a layer produced in a lamination process and preferably a layer produced in an extrusion lamination process. Plastic laminate (1) according to at least one of the preceding claims, characterized in that at least one of the layers and in particular the base layer, the third layer and/or the fourth layer has an inorganic coating which contains at least one substance selected from a group consisting of a metal, a semi-metal, a metal oxide, a Semi-metal oxide, aluminum, copper, titanium, gold, silver, aluminum oxide (AlOx), silicon oxide (SiOx), or mixtures thereof and which can provide the plastic laminate with barrier properties, in particular but not exclusively against oxygen, water (vapor) and/or aroma. Plastic laminate (1) according to at least one of the preceding claims, characterized in that at least one outer layer comprises an activatable and in particular a thermally activatable film and in particular a sealing film. Plastic laminate (1) according to at least one of the preceding claims, characterized in that the third layer (8) consists of a polyolefin and preferably has a sealing start temperature which is ≤ 160 °C, preferably ≤ 150 °C, preferably ≤ 140 °C, preferably ≤ 130 °C, preferably ≤ 120 °C, preferably ≤ 110 °C, preferably ≤ 100 °C, preferably ≤ 90 °C and preferably ≤ 80 °C. Plastic laminate (1) according to at least one of the preceding claims, characterized in that the extrusion lamination comprises a predetermined proportion of at least 75%, preferably of at least 80%, preferably of at least 85%, preferably of at least 90% and preferably of at least 95% of an identical or related plastic or its base monomer, preferably ethylene or propylene, as the base layer and the third layer, the remaining proportion preferably comprising polar comonomers such as preferably acrylic acid (AA), vinyl acetate (VA), maleic anhydride, butyl acrylate, to improve adhesion, for example to metallized films. Regranulate, at least partially, produced from a plastic laminate according to one of the preceding claims, wherein the regranulate is preferably made of at least 70%, preferably at least 80%, preferably at least 90% of the plastic laminate (1). Film, in particular for packaging material, characterized in that the film consists, at least in part, of a regranulate according to Claim 14 is manufactured. Plastic packaging, in particular for food and/or pharmaceutical products, made from a plastic laminate (1) according to at least one of the preceding claims. Method for producing a plastic laminate with the steps: - extrusion and in particular co-extrusion of a base layer (2), which preferably has at least one substrate layer, a connecting layer and a barrier layer made of a barrier polymer; - connecting the base layer (2) to the further layer (8) by means of extrusion lamination and/or applying a print to the base layer.

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