Laminated film comprising ethylene copolymer
The invention is a polymer composition for film layer comprising less than 50 wt % of a copolymer of ethylene with silane group(s) containing units and at least 50 wt % of a thermoplastic polyolefine free from silane group(s) wherein the polymer composition has creep of less than 1 mm at 90° C., and an adhesion above 20 N/cm. The invention relates to a laminated article with at least one film layer of the polymer composition and a substrate.
1. A film layer made of a polymer composition comprising:
(A) 10 to 50 wt % of a copolymer of ethylene with silane group(s) containing units having a density of from 910 kg/m 3 to 960 kg/m 3 , and
(B) at least 50 wt % of a thermoplastic polyolefin free from silane group(s) being a plastomer (E) having a density of from 860 kg/m 3 to 915 kg/m 3 , wherein the densities are determined according to ISO1183D using test specimens according to ISO1872-2,
wherein the polymer composition has creep of less than 1 mm at 90° C. during 48 hours, and an adhesion of above 20 N/cm.
2. The film layer according to claim 1 , wherein the copolymer of ethylene (A) with a with silane group(s) containing units is in an amount from 10 to 45 wt %, based on the total weight of the polymer composition.
3. The film layer according to claim 1 , wherein the thermoplastic polyolefin free from silane group(s) (B) is present in an amount from 60 to 90 wt %, based on the total weight of the polymer composition.
4. The film layer according to claim 1 , wherein the total amount of silane group(s) in the polymer composition is less than 1 wt %.
5. The film layer according to claim 1 , wherein the polymer composition has density of from 860 to 910 kg/m 3 and a MFR 2 of 1-10 g/10 min.
6. The film layer according to claim 1 , wherein the polymer composition is free from peroxides.
7. The film layer according to claim 1 , wherein the polymer composition has an UV stabilizer and an antioxidant present in an amount of 0.1 to 5 wt %, based on the total weight of the polymer composition.
8. The film layer according to claim 1 , wherein the polymer composition comprises a condensation catalyst (F).
9. A laminated article comprising a substrate layer and at least one layer wherein the at least one layer comprises a polymer composition comprising:
(A) 10 to 50 wt % of a copolymer of ethylene with silane group(s) containing units having a density of from 910 kg/m 3 to 960 kg/m 3 , and
(B) at least 50 wt % of a thermoplastic polyolefin free from silane group(s) being a plastomer (E) having a density of from 860 kg/m 3 to 915 kg/m 3 , wherein the densities are determined according to ISO1183D using test specimens according to ISO1872-2,
wherein the polymer composition has creep of less than 1 mm at 90° C. during 48 hours, and an adhesion of above 20 N/cm.
10. The laminated article according to claim 9 , wherein the substrate layer is a glass layer.
11. The laminated article according to claim 9 , wherein the polymer composition is laminated at 130° C. to 170° C.
12. The laminated article according to claim 9 , wherein the copolymer of ethylene (A) with a with silane group(s) containing units is in an amount from 10 to 45 wt %, based on the total weight of the polymer composition.
13. The laminated article according to claim 9 , wherein the thermoplastic polyolefin free from silane group(s) (B) is present in an amount from 60 to 90 wt %, based on the total weight of the polymer composition.
14. The laminated article according to claim 9 , wherein the total amount of silane group(s) in the polymer composition is less than 1 wt %.
15. The laminated article according to claim 9 , wherein the polymer composition has density of from 860 to 910 kg/m 3 and a MFR2 of 1-10 g/10 min.
16. The laminated article according to claim 9 , wherein the polymer composition is free from peroxides.
17. The laminated article according to claim 9 , wherein the polymer composition has an UV stabilizer and an antioxidant present in an amount of 0.1 to 5 wt %, based on the total weight of the polymer composition.
18. The laminated article according to claim 9 , wherein the polymer composition comprises a condensation catalyst (F).