MULTI-LAYERED FILM AND BUILDING FACADE ELEMENT HAVING A COATING MADE OF A MULTI-LAYERED FILM

Abstract

A multi-layered film including a polyvinyl chloride (PVC)-based base layer containing a plasticizer and including a surface layer containing a UV stabilizer that is adhesively bonded to the base layer, wherein an acrylate-based PVC-free copolymer is used as a plasticizer in the base layer.

Claims

1. A multi-layered film (1), comprising: a polyvinyl chloride (PVC)-based base layer (2) containing a plasticizer, a surface layer (3) containing a UV stabilizer that is adhesively bonded to the base layer (2), and an acrylate-based PVC-free copolymer used as a plasticizer in the base layer (2).

2. The multi-layered film (1) according to claim 1, wherein the base layer (2) has a component a of PVC, where 30%?a?80%.

3. The multi-layered film (1) according to claim 2, wherein the base layer (2) has a component b of the acrylate-based PVC-free copolymer, where 20%?b?50%.

4. The multi-layered film (1) according to claim 3, wherein the base layer (2) has a component c of a thermal stabilizer, where 1%?c?5%.

5. The multi-layered film (1) according to claim 4, wherein the surface layer (3) is embodied in a form of an acrylate-based UV-protection film.

6. The multi-layered film (1) according to claim 4, wherein the surface layer (3) is embodied in a form of a PMMA/PVDF film.

7. The multi-layered film (1) according to claim 4, wherein the surface layer (3) is embodied in a form of an acrylate-based finish with UV-absorbers.

8. The multi-layered film (1) according to claim 7, wherein the surface layer (3) contains UV absorbers with a component d, where 0.2%?d?3%.

9. The multi-layered film (1) according to claim 8, wherein the surface layer (3) contains light protection in a form of sterically hindered amines or hindered amine light stabilizers (HALS) in a component e, where 0.2%?e?3%.

10. The multi-layered film (1) according to claim 9, wherein the base layer (2) and/or the surface layer (3) each contains phenolic and/or phosphite-containing co-stabilizers.

11. The multi-layered film (1) according to claim 10, wherein the base layer (2) and the surface layer (3) are thermally laminated and form a composite.

12. The multi-layered film (1) according to claim 11, wherein the base layer (2) is printed and/or dyed.

13. The multi-layered film (1) according to claim 12, wherein the surface layer (3) is embossed.

14. A building fa?ade element having a coating made of the multi-layered film (1) according to claim 1.

15. A building fa?ade element according to claim 14, which is embodied as a window profile.

16. The multi-layered film (1) according to claim 1, wherein the base layer (2) has a component b of the acrylate-based PVC-free copolymer, where 20%?b?50%.

17: The multi-layered film (1) according to claim 1, wherein the base layer (2) has a component c of a thermal stabilizer, where 1%?c?5%.

18. The multi-layered film (1) according to claim 1, wherein the surface layer (3) is embodied in a form of an acrylate-based UV-protection film.

19. The multi-layered film (1) according to claim 1, wherein the surface layer (3) is embodied in a form of a PMMA/PVDF film.

20. The multi-layered film (1) according to claim 1, wherein the surface layer (3) is embodied in a form of an acrylate-based finish with UV-absorbers.

21. The multi-layered film (1) according to claim 1, wherein the surface layer (3) contains UV absorbers with a component d, where 0.2%?d?3%.

22. The multi-layered film (1) according to claim 1, wherein the surface layer (3) contains light protection in a form of sterically hindered amines or hindered amine light stabilizers (HALS) in a component e, where 0.2%?e?3%.

23. The multi-layered film (1) according to claim 1, wherein the base layer (2) and/or the surface layer (3) each contains phenolic and/or phosphite-containing co-stabilizers.

24. The multi-layered film (1) according to claim 1, wherein the base layer (2) and the surface layer (3) are thermally laminated and form a composite.

25. The multi-layered film (1) according to claim 1, wherein the base layer (2) is printed and/or dyed.

26. The multi-layered film (1) according to claim 1, wherein the surface layer (3) is embossed.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Embodiments of this invention will be described in greater detail below in conjunction with a FIGURE. The sole FIGURE schematically shows a multi-layered film according to one embodiment of this invention.

[0026] In the embodiment shown, the multi-layered film 1 has a polyvinylchloride (PVC)-based base layer 2, which contains a plasticizer. An acrylate-based PVC-free copolymer is used as a plasticizer. The base layer 2 has a thickness d.sub.1 of 120 micrometers. The thickness d.sub.1 can, for example, be between 70 and 300 micrometers.

[0027] On the top surface of the base layer 2, a surface layer 3 is provided and is adhesively bonded to it. It can be embodied in the form of an acrylate film, a PMMA/PVDF film, or in the form of a finish, such as an acrylate-based one. The surface layer 3 can have a thickness d.sub.2 of 50 micrometers. For example, d.sub.2 can be between 30 and 100 micrometers. When the surface layer 3 is embodied as a finish layer, the thickness d.sub.2 is 3 to 10 micrometers.

[0028] The top surface 4 of the surface layer 3 forms the top surface of the film 1. It can thus be exposed to direct solar radiation, which is indicated by the arrows 5. This is why the surface layer 3 can be provided with UV stabilizers, which increase the light resistance of the film 1.

[0029] In the embodiment shown, the underside of the base layer 2 can have a coupling agent layer 6. The coupling agent layer 6 is used for applying the film 1 to a surface that is to be coated such as a window profile and for producing a permanent bond to it.

[0030] The film 1 has a total thickness D, which corresponds to at least the sum of d.sub.1 and d.sub.2 and which in the exemplary embodiment shown is 210 micrometers. Basically, D can for example lie between 100 and 400 micrometers.

[0031] The composition of the film 1 is indicated in Table 1. In some cases, the advantageous range is provided in parentheses after the quantity indications relating to the specific example.

TABLE-US-00001 TABLE 1 Content in % Raw material PVC 52.5 (30-80) Acrylic copolymer (PVC-free, used as 35 (20-50) a plasticizer) Thermal stabilizer 2.6 Light protection composed of: 0.9 Absorbers 0.45 (0.2-3) NOR-HALS 0.45 (0.2-3) Co-stabilizer: Organic phosphite 0.4 (0.2-1) Acryl. processing aid 0.6 Epoxidized soybean oil 6.9 Acrylic lubricant +TiO.sub.2/pigments (also added) +15