Process for producing a coated grained film, the coated grained film, and use thereof

PT3554809TActive Publication Date: 2026-06-15BENECKE-KALIKO GMBH
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
PT · PT
Patent Type
Patents
Current Assignee / Owner
BENECKE-KALIKO GMBH
Filing Date
2017-12-04
Publication Date
2026-06-15

AI Technical Summary

Technical Problem

Existing textured TPO films for motor vehicle components suffer from poor feel due to high hardness, tendency to stick during extrusion, high gloss, and insufficient stability, leading to manufacturing challenges and reduced durability.

Method used

A method using a polymeric mixture of ethylene-propylene-diene copolymer (EPDM) and thermoplastic polyolefin (TPO) with low Shore A hardness, extruded and treated with electron beams to achieve a gel content of 10-70 wt%, eliminating the need for crosslinking agents and ensuring a soft, low-gloss, and stable film laminate.

Benefits of technology

The method produces a film laminate with a pleasant feel, low gloss, and high embossability, suitable for deep-drawn molded parts with improved durability and stability, overcoming the limitations of traditional TPO films.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader
Need to check novelty before this filing date? Find Prior Art

Description

[0001] The invention relates to a method for producing a painted textured film or a film laminate comprising a painted textured top film and at least one bottom film, this film or film laminate and its use for producing deep-drawn molded parts.

[0002] The invention is based on the prior art described below: DE 100 18 196 A1 relates to a process for producing a textured film from a material containing uncrosslinked polyolefin and optionally further additives, wherein the film is treated with electron beams. The film obtained in the usual way is treated with electron beams to achieve a texture strength suitable for deep drawing. The textured film, with a density of approximately 0.7 to 1.2 g / cm³, is deep drawn. To successfully carry out this process, crosslinking agents, such as trimethylolpropane triacrylate, are used. The electron beam treatment of the films is carried out in such a way that a gel content of approximately 5 to 80% is achieved in the irradiated film.

[0003] The technical teaching of EP 1 149 858 B2 is based on the prior art according to DE 100 18 196 A1. It relates to the production of a textured molded body containing partially cross-linked polyolefins and optionally other additives. A film is produced using uncross-linked polyolefins with added stabilizers and optionally other additives, such as cross-linking agents. This film is then embossed. To achieve a texture stability suitable for thermoforming, the embossed film is treated with electron beams, resulting in a gel content of 15 to 65 wt.% in the film. This film can then be thermoformed into a molded body with a textured surface.

[0004] EP 1 538 175 B1 describes the production of a textured molded body with a surface containing partially cross-linked polymeric materials and optionally other additives. This molded body has at least one underlayer laminated to the top layer. The film laminate is embossed and treated with electron beams to achieve texture stability suitable for the thermoforming process. The treated film laminate is then thermoformed into a molded body. A particular feature of this known process is that at least one underlayer is formed with a foamed material having a density between 35 and 120 g / l and a gel content of less than 80%.

[0005] EP 1 688 460 B1 discloses the production of a textured film or a textured film laminate comprising a top film and at least one bottom film. The film or the top film of the film laminate is based on a mass containing polyolefins and optionally other polymers and additives, wherein the film or the film laminate is crosslinked by electron beams after an embossing step that forms the textured structure. A particular feature of this known process is the gel content of the film, which is 3 to 15 wt.%, measured before the embossing step. The starting material for the film or top film is characteristic of this process. Accordingly, the corresponding composition contains 5 to 50 wt.% polypropylene with a melting point above 120°C, 5 to 80 wt.% of an ethylene copolymer or a mixture of several copolymers, each with a melting point below 100°C, and 0 to 50 wt.% of other polymers.-% of a polyethylene with a density of < 0.94 kg / l and an MFI (190°C, 2.16 kg) of less than 5 g / 10 min.

[0006] Before presenting the object of the present invention, the following considerations should be made: In motor vehicles, it is standard practice to align the design of instrument panels with the adjacent components. A textured TPO film is problematic if it has a poor feel. A common thermoplastic polyolefin (TPO), such as polypropylene, is described as "hard" and "plastic-like" compared to polyvinyl chloride (PVC) and polyurethane (PU). Therefore, TPO-based films have been superseded by other materials, such as PVC and PU. To date, it has not been possible to achieve a sufficient reduction in hardness using advanced manufacturing processes. This is because, with increasing softness, a strong tendency for extruded TPO films to stick together has been observed, which prevents further manufacturing.An extruded film became so stuck to itself while wound that it could no longer be unwound and therefore could not be finished. While it would be possible to introduce chemical release agents into the separation process, or to perform plasma treatment before winding, these measures lead to increased manufacturing costs and adverse changes in material properties, such as reduced adhesion of applied coatings, negatively altered embossing characteristics, and undesirable emissions. Furthermore, such films typically exhibit a very high gloss level and insufficient stability in their aging behavior at 120°C. Although it is standard practice to coat films with highly matte coatings, this coating is only capable of ensuring the required uniformly low gloss to a limited extent and only depending on the degree of stretching during the thermoforming process.Furthermore, excessive matting of the lacquer layers leads to reduced resistance to abrasion and increased susceptibility to writing, which also severely limits this measure.

[0007] Based on the prior art described above and the following fundamental considerations regarding the present technical field, the invention aims to advantageously further develop the aforementioned method in order to treat the products obtained after the positive thermoforming process while maintaining a high degree of grain quality, whereby the resulting molded parts are characterized by high optical appeal and a pleasant feel. Optical appeal is achieved when the film exhibits a uniformly low gloss level of less than 1 in the differently stretched area of ​​a component and displays a homogeneous grain pattern. Simultaneously, it is perceived as pleasant to the touch when it possesses a corresponding softness. This can be determined both horizontally and vertically (impression haptics). The vertical haptics are of particular importance. They also lead to an improvement in the horizontal haptics.Therefore, a new method, in particular a combination of polymeric starting materials, had to be developed to overcome the aforementioned disadvantages of the state of the art.

[0008] According to the invention, this problem is solved by a method for producing a painted textured film or a film laminate with a painted textured top film and with at least one bottom film, wherein the polymeric starting mixture is extruded to form a film, or the film as a top film is co-extruded with a bottom film to form a film laminate, or the film as a top film is separately bonded with the bottom film, the film or the top film of the film laminate is textured in an embossing step and then treated with electron beams, wherein this method is characterized in that a polymeric starting mixture with a content of an ethylene-propylene-diene copolymer (EPDM) with a Shore A hardness of 40 to 80 and a thermoplastic polyolefin (TPO) with a Shore A hardness of 40 to 90 is used for extrusion, wherein the polymeric starting mixture is largely uncrosslinked in order to produce a painted textured film or film laminate after extrusion.to form a lacquered textured film laminate and then to treat the lacquered textured film or the lacquered textured surface of the film laminate with electron beams until a gel content of 10 to 70 wt.% is achieved, wherein the gel content of the lacquered film or lacquered top film before crosslinking is less than 3 wt.% and wherein the gel content of the film or top film of the film laminate is adjusted to 10 to 70 wt.% by treatment with electron beams.

[0009] The following insights of the inventors played a significant role in the development of this inventive process: The hardness of the polymers used is crucial for a pleasant feel. Generally, the softer a polymer, the more pleasant its feel. To achieve a rubber-like elasticity, materials are selected within the scope of the invention that exhibit low hardness or low Shore A values ​​and undergo desirable crosslinking when irradiated with electron beams. Soft EPDM with a high proportion of free C-C double bonds is highly amorphous and exhibits these advantageous properties. Surprisingly, the use of such polymers completely eliminates the need for crosslinking agents.Crosslinking agents are not only costly, but they also lead to adverse properties and undesirable emissions from a structure. The present invention was developed taking these findings into account.

[0010] The process according to the invention can be implemented in various ways. It is preferred that the gel content of the coated film or coated top film before crosslinking is less than 1 wt.% and, in particular, 0 wt.%.

[0011] It has also proven advantageous if the polymeric starting mixture contains 10 to 50 wt.% EPDM, in particular 30 to 40 wt.% EPDM and 50 to 90 wt.%, in particular 65 to 75 wt.% TPO.

[0012] In certain cases, it is advantageous if the polymeric starting mixture additionally contains LLDPE, particularly as a partial replacement for the components EPDM and / or TPO, wherein the polymeric starting mixture contains 17 to 35 wt.% LLDPE, 17 to 35 wt.% EPDM, and 35 to 65 wt.% TPO. This concept is advantageously further developed if the polymeric starting mixture contains 17 to 35 wt.%, particularly 22 to 28 wt.% LLDPE, 17 to 35 wt.%, particularly 22 to 28 wt.% EPDM, and 35 to 65 wt.%, particularly 45 to 60 wt.% TPO.

[0013] Attention should be paid to the physical characteristics of the components LLDPE, TPO, and EPDM described above. It is advantageous if the components of the polymeric starting mixture exhibit the following characteristics: LLDPE has an MFI (190°C, 2.16 kg) of 0.05 to 5.0, particularly 0.5 to 2.0 g / 10 min, and / or a Shore A hardness of 40 to 80, particularly 50 to 60; TPO an MFI (230°C, 2.16 kg) of 0.05 to 5.0, in particular of 0.5 to 1.0 g / 10 min, and / or a Shore A hardness of 40 to 90, in particular of 70 to 85; EPDM a Shore A hardness of 40 to 80, in particular of 45 to 60 and / or a diene content of 0.5 to 15 wt.%, in particular of 2 to 10 wt.%, wherein the range of 3 to 8 wt.%, in particular of 4 to 6 wt.%, is particularly advantageous.

[0014] Particularly advantageous polymers will be identified below, which fall under the terms LLDPE, TPO and EPDM used above to define the invention, although the invention also allows other polymers to be used to a certain extent, provided they do not impair the technical success sought according to the invention.

[0015] LLDPE(Linear low-density polyethylene): Polyethylene-based plastics with an ethylene content of > 50 wt.%. Ethylene-based soft polymers can include, in particular, copolymers of ethylene with alpha-olefins such as propylene, 1-butene, 1-hexene, 1-octene, vinyl acetate, methyl acrylate, or butyl acrylate; MFI range 0.05 to 5.0 g / 10 min (190°C; 2.16 kg); density range 0.850 to 0.900 g / cm³; TPO = TPE-O (thermoplastic olefin-based elastomer): Polymers based on propylene and optionally copolymers, in particular ethylene with a propylene content of > 50 wt.%; The above-mentioned PP types in a mixture with EPR, so-called RAHECO (Random Heterophase Copolymers PP / EPR mixtures), can also be used; MFI range 0.05 to 5.0 g / 10 min (230°C, 2.16 kg); density between 0.86 and 0.93 g / cm³; EPDM(Ethylene propylene diene copolymer): Terpolymer of ethylene, propylene, and other dienes, especially pentadiene, hexadiene, or ethylidene norbornene. The ratios of the three copolymers can vary considerably. The ethylene content ranges from 40 to 90 wt%, the propylene content from 3 to 50 wt%, and the diene content from 0.5 to 15 wt%. The density is between 0.85 and 0.900 g / cm³, and the Mooney viscosity ML 1+4 (125°C) is 5 to 200 MU.

[0016] The technical success sought according to the invention is fully achieved when the gel content of the film or the top film of the film laminate is adjusted to 10 to 70 wt.%, in particular to 30 to 60 wt.%, by treatment with electron beams, in particular by treatment with electron beams of a radiation dose of 20 to 150 kGy, in particular of 40 to 80 kGy.

[0017] The production of a film laminate with a lacquered surface and at least one backing film is subject to purely technical considerations. Nevertheless, it is preferred that the top film be provided with a compact or foamed backing film by co-extrusion, lamination, or bonding. It is particularly advantageous if the top film or the film laminate consisting of the top and backing films is provided with a textile layer, for example, a woven, knitted, and / or nonwoven fabric. In certain cases, it is preferred if the backing film is made of a polyolefin foam based on polyethylene and / or polypropylene. A preferred density of 35 to 120 g / l for the foamed polymer material is specified here. Here are some specific details:

[0018] Thus, by forming a surface texture and laminating a textile fabric onto the film, an artificial leather can be obtained that is particularly suitable for the automotive and fashion sectors. Of particular value is the formation of a foam film laminate, which comprises a film or compact top film formed according to the invention, the thickness of which is adjusted by extrusion to preferably about 0.2 to 2 mm, particularly up to 0.8 mm, and most preferably to about 0.5 mm. This film or top film is preferably provided with a coating layer commonly used in the prior art, in particular with a polyurethane-based coating, which is the standard practice within the scope of the invention. Such coatings are preferably applied in the form of an aqueous dispersion in order to achieve the desired low thickness of the coating layer. However, solvent-based systems are also known in the trade.Applying a varnish layer using the gravure printing process is particularly advantageous. In principle, the varnish layer can be applied before or after the embossing of a texture.

[0019] According to the invention, the coating layer preferably has a thickness of about 1 to 15 mm, particularly about 2 to 10 µm, and most preferably 2 to 5 µm. The construction described above is preferably laminated with a backing film made of foamed polymer material. The backing film has, in particular, a density of 35 to 120 g / l and a gel content of less than 80%. Compact backing films have the advantage of enabling the production of geometrically more complex components in thermoforming processes with stretch ratios of more than 80%. Medium-density foams with densities of less than 700 kg / m³ also exhibit the same elongation as compact films and can be used as a substitute for compact backing films.

[0020] Furthermore, it is considered particularly preferred if the film laminate with the lacquered textured top film is produced in a single process step in which a foamed under film is laminated onto the lacquered top film and the lacquered top film is simultaneously embossed and subsequently treated with electron beams.

[0021] In implementing the invention, it is advantageous in certain cases to incorporate additives into the polymeric starting material or the starting materials of the subsequent layers of the film laminate. Particularly advantageous additives include antioxidants, light stabilizers, lubricants, and / or pigments, especially in an amount of 0.5 to 5% by weight of the respective layer. Phenol derivatives and / or phosphites and / or light stabilizers of sterically hindered amines are considered advantageous as antioxidants.

[0022] Finally, the present invention also relates to a lacquered textured film or a multilayer film laminate with a lacquered top film, which is obtainable according to the inventive method described above and is characterized by a lacquered top film of a Shore A hardness of 40 to 80, in particular 60 to 80, and a gel content of 10 to 70% by weight, in particular 30 to 60% by weight.

[0023] The particular value of the invention lies in the use of the aforementioned film or film laminate, obtainable according to the inventive method, as a deep-drawn, in particular injection-molded or back-pressed, molded part, especially in aircraft, motor vehicles, for vehicle interior trim or trim parts, in particular switchboards or instrument panels, pillars, vehicle side panels, door panels and storage compartments. A particularly outstanding advantage lies in the use of the film or film laminate as an unweakened decorative film for airbag covers.

[0024] The invention will now be explained in general terms in light of the preferred embodiments described above, also with regard to the advantages achieved: According to the invention, advantageous embossing can be achieved by excluding a gel content of less than 3 wt.%, preferably 0 wt.%, in the film or film laminate, whereby the speed of the embossing rollers can be selected to be high. Following embossing, the material is cross-linked for high grain strength during deep drawing and / or forming. The cross-linking that occurs after the embossing step forming the grain structure is carried out in particular by the electron beam cross-linking described above. If the object produced according to the invention is a film, it is characterized by particularly good embossability with good grain formation.The film can be laminated and / or coated, for example with a PUR lacquer, during and / or before and / or after the embossing step that forms the grain structure and / or after cross-linking to form a composite structure, and subsequently deep-drawn to form a multi-layered, grained molded body, for example an interior trim panel of a motor vehicle.

[0025] If the object initially produced according to the inventive method is a film laminate with a lacquered top film and at least one bottom film, this laminate is also characterized by excellent embossability with good grain formation. After embossing and further crosslinking by electron beams, the film laminate can be formed into a multi-layered grained body, in particular by a thermoforming process. The multi-layered body can be provided with a substrate, e.g., made of ABS or natural fibers. It is advantageous if the substrate is bonded directly to the grained multi-layered film material during the thermoforming process of producing the grained multi-layered body. The bond between the substrate and the bottom film can also be achieved using an adhesive system.

[0026] It is also possible that, in a single process step and largely excluding a vacuum, and in particular largely excluding an adhesive system, a carrier-supported, grained, multi-layered molded body is formed from the film laminate for the production of the grained multi-layered molded body by a) heating a carrier prefabricated in its spatial structure on the surface and pressing it onto the back-heated side of the cross-linked grained multi-layered film laminate or b) bonding a carrier starting material in a plastic state to the back of the cross-linked grained multi-layered film laminate in a tool.

[0027] The films or film laminates produced according to the inventive method, as well as the molded parts produced therefrom, offer numerous advantages. Due to their excellent embossability and grain definition, the films or film laminates are very easy to manufacture, and the embossing speed can be increased without compromising the embossed structure, thus increasing the efficiency of the manufacturing process. The films or film laminates produced according to the inventive method and formed into molded parts are particularly suitable for interior trim in motor vehicles, for example, as dashboard trim, where a stable, clean grain pattern is of paramount importance. Due to the long service life of motor vehicles, interior trim is subject to considerable stress. Therefore, a stable, clean grain pattern is of particular importance for the perceived quality of the vehicle interior trim.The inventive method largely eliminates any disruption of the homogeneity of the scar pattern. A desired, embossed scar pattern is obtained. An undesirable glossy surface is prevented.

[0028] In summary, the invention offers numerous advantages, as already evident from the descriptions above. In particular, components obtained using the films or film laminates according to the invention exhibit a significant improvement in softness. This results in a pleasant feel, similar to that of PVC or PU films. A pleasant feel is always a requirement for component manufacturers. Furthermore, the film or film laminate initially obtained within the scope of the invention exhibits good embossability, which is influenced by reducing the gel content to zero before crosslinking with electron beams. After positive deep drawing, the retention of the grain and a low gloss are desirable. The corresponding components based on the present invention show a further reduction in gloss, which can be considered a superior quality.

[0029] The invention will now be explained in more detail using examples and comparative examples. Examples

[0030] The compositions listed in Table 1 below, with the amounts of substances in parts by weight, were extruded into films with a thickness of 0.5 mm on a twin-screw extruder (ZSK 25 L / D 28). The cylinder and die temperatures were set according to the specifications in Table 2. Table 1 (Polymer starting materials / film compositions) substance Comparative example 1 Comparison example 2 Example 1 (Invention) Example 2 (Invention) LLDPE 27,5 TPE-V 30 EPDM 1 30 20 EPDM 2 35 27,5 TPO 1 70 50 TPO 2 65 45 Networking tools 2 2 pigment 1 1 1 1 LLDPE: Ethylene-octene copolymer, density 0.857 g / cm³, MFI 1 g / 10 min (190°C, 2.16 kg); Shore hardness A 54 TPE-V: Thermoplastic elastomer consisting of 35 wt% polypropylene and 65 wt% of a copolymer of ethylene, propylene and a diene, MFI 15 g / 10 min (230°C / 10 kg), gel content 28%; Shore hardness A 82 TPO 1: Thermoplastic elastomer (uncrosslinked), consisting of 35% h-polypropylene and 65% of a copolymer of ethylene and propylene, density 0.89 g / cm³, MFI 1 g / 10 min (230°C, 2.16 kg) TPO 2: Thermoplastic elastomer (uncrosslinked), consisting of 35% r-polypropylene and 65% of a copolymer of ethylene and propylene, density 0.88 g / cm³, MFI 0.5 g / 10 min (230°C, 2.16 kg) EPDM 1: Ethylene-propylene-diene copolymer, density 0.89 g / cm³, diene content approx. 1 wt.%; Shore hardness A 87 EPDM 2: Ethylene-propylene-diene copolymer, density 0.88 g / cm³, diene content approx. 4.8 wt%; Shore hardness A 50 Networking tools: Triallyl cyanurate Pigment: Masterbatch of 25% carbon black in LD-PE carrier matrix Table 2 (Cylinder and nozzle temperatures in °C during film extrusion) Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6 cylinder 180 175 180 180 195 25 nozzle 200 200 200 200 200 200

[0031] The films were then coated with an approximately 10 µm thick PUR lacquer and subsequently laminated and embossed simultaneously with another 0.5 mm thick film of the same composition in the embossing gap during a continuous embossing process at a line pressure of 35 bar, an embossing temperature of 175°C, and preheating roller temperatures of 125°C. The embossing speed required to achieve the visually assessed mark output was determined using a tachometer. The resulting samples were then irradiated in an electron beam crosslinker with the radiation doses described in Table 3. Table 3 (Network sockets) Comparative example 1 Comparison example 2 Example 1 (Invention) Example 2 (Invention) Dose [kGy] 75 75 50 50

[0032] The various test results can be found in Table 4 below: Table 4 (Test results) Comparison example 1 Comparison example 2 Example 1 (Invention) Example 2 (Invention) Extrusion behavior OK OK OK OK embossing speed [m / min] 3 8 12 12 Gel content of the foil at the time of the embossing step < 3% 9% 0% 0% Gel content of the film at the time of deep drawing 42% 40% 40% 38% Deep drawing Distinct scar, no shine Distinct scar, no shine Distinct scar, no shine Distinct scar, no shine Tvor = 170°C Press = 180°C Gloss after deep drawing 1,0-1,3 1,1-1,5 0,8-0,9 0,8-1,0 Shore A 91 90 60 52 Haptics (manual) hard hard very soft very soft

[0033] The determination of gloss, gel content, Shore A value and haptics is described in the attached appendix.

[0034] The products of the comparative examples and those of the examples according to the invention differ as follows: It can be seen from Table 4 that the products according to examples 1 and 2 according to the invention are clearly superior to those according to comparative examples 1 and 2, namely with regard to the gloss as well as the manually determined feel after deep drawing as well as the Shore hardness A. 1. The Gel contentThe samples were obtained using the extraction method. They were cut into squares with sides of approximately 1.0 mm at a thickness of approximately 0.5 mm. The samples (approximately 100 mg) were then placed in test tubes fitted with stainless steel wire stoppers to prevent the samples from floating. The test tubes were filled with 100 ml of xylene and sealed with aluminum foil to prevent solvent evaporation. The xylene was then heated to boiling. The samples were left in boiling xylene for approximately 24 hours. Subsequently, the gel-xylene mixture was filtered through a 200-mesh sieve drum, leaving the gel behind. The sieve drums were placed on metal plates and dried in a convection oven at 140°C for 3 hours. After cooling to room temperature, the gel content was weighed and compared to the initial sample weight. 2.The gloss was determined as follows: The determination of the gloss after deep drawing according to Table 4 was carried out at a stretching of 80 to 100% at an angle of 60° using a Byk Gardner Mikro Gloss device. 3. The Shore A value is determined according to DIN EN ISO 868 (as of 10-2003). 4. The Haptics The (manual) determination was carried out as follows: Internal test subjects were presented with the flat material and samples of the described construction processed into the component for evaluation. The test criterion was the subjective perception of each test subject upon touching the surfaces. The test subject was to assess whether the inventive sample was 1) harder, 2) the same, and 3) softer than the comparison example.

Claims

1. A method for the production of a lacquered grained film or film laminate with a lacquered grained top film and with at least one bottom film, wherein a polymeric starting mixture is extruded into a film or the film is co-extruded as a top film with a bottom film to form a film laminate, or the film is separately bonded to the bottom film as a top film, the film or the top film of the film laminate is grained in a single embossing step and then electron beams are applied. wherein a polymeric starting mixture with a content of an ethylenepropylene-diene composite polymer (EPDM) of a Shore hardness A of 40 to 80 and a thermoplastic polyolefin (TPO) of a Shore hardness A of 40 to 90 is used for extrusion, wherein the polymeric starting mixture is largely non-cross-linked to form a lacquered grained film or laminate after extrusion, and then treat the lacquered grained foil or the lacquered grained surface of the foil laminate with electron beams until a gel content of 10 to 70 wt% has been obtained, wherein the gel content of the lacquered foil or lacquered top foil is less than 3 wt% before cross-linking and wherein the gel content of the foil or the top film of the foil laminate is adjusted to 10 to 70 wt% by treating it with electron beams.

2. The method of claim 1, characterized in that the gel content of the varnished foil or lacquered top foil prior to crosslinking is 0 to less than 1% by weight.

3. A method according to any one of claims 1 or 2, characterized in that the polymeric starting mixture contains 10 to 50 % EPDM by weight, in particular 30 to 40 % EPDM by weight and 50 to 90% by weight, in particular 65 to 75% TPO by weight.

4. A method according to at least one of the preceding claims, characterized in that the polymeric starting mixture additionally contains LLDPE (linear low density polyethylene), in particular as a partial substitute for the components EPDM and / or TPO, wherein the polymer starting mixture contains 17 to 35 wt% LLDPE, 17 to 35 wt% EPDM and 35 to 65 wt% TPO.

5. A method according to at least one of the preceding claims, <b>characterized in that the constituents of the polymeric starting mixture have the following characteristics: LLDPE an MFI (190°C, 2.16 kg) of 0.05 to 5.0, in particular from 0.5 to 2.0 g / 10 min and / or a Shore hardness A of 40 to 80, in particular from 50 to 60; TPO an MFI (230°C, 2.16 kg) of 0.05 to 5.0, in particular from 0.5 to 1.0 g / 10 min, and / or a Shore hardness A of 70 to 85; EPDM has a Shore hardness A of 45 to 60, and / or a diene content of 0.5 to 15% by weight, in particular 2 to 10% by weight.

6. A method according to at least one of the preceding claims, characterized in that the gel content of the foil or the top film of the film laminate is adjusted to 30 to 60 % by weight by treatment with electron beams, in particular by treatment with electron beams of a radiation dose of 20 to 150 kGy, in particular 40 to 80 kGy.

7. A method according to at least one of the preceding claims, characterized in that the top film is provided with a compact or a foamed bottom film by coextrusion, lamination or bonding.

8. A method according to at least one of the preceding claims, characterized in that the top film or laminate of top film and bottom film is provided with a textile layer.

9. A method according to at least one of the preceding claims, characterized in that the film laminate is produced with the lacquered grained top film in the course of a single process step, wherein a foamed bottom film is laminated to the underside of the painted top film and the top film is simultaneously embossed and then the electron beam treatment is carried out.

10. A method according to at least one of the preceding claims, characterized in that additives are incorporated into the polymer starting material or starting materials of the further layers of the film laminate.

11. A method according to claim 10, characterized in that antioxidants, light stabilizers, lubricants and / or pigments are used as additives, in particular in a quantity of 0.5 to 5% by weight of the respective layer.

12. A method according to claim 11, characterized in that phenol derivatives and / or phosphites are used as antioxidants and / or sterically hindered amines as light stabilizers.

13. A lacquered grained film or multi-layer film laminate with a lacquered grained top film, available by a process according to at least one of the preceding claims, wherein the film or topfoil has a shore hardness A of 40 to 80, in particular 60 to 80, and a gel content of 10 to 70% by weight, in particular 30 to 60% by weight14. The use of a film or a film laminate according to claim 13 as a deep-drawn, in particular back-injected or back-pressed or back-foamed moulded part, in particular in aircraft, in motor vehicles, for vehicle interior trim or trim parts, in particular switchboards or dashboards, pillars, motor vehicle side panels, door cladding and shelves.

15. The use of a film or a film laminate according to claim 13, as an unattenuated decorative film for airbag panels.