Elongated article with good flexibility and high flame retardancy

1. An Elongated article comprising:

(i) one or more elements including a medium with static/moving charge/current or communication medium; and

(ii) a halogen-free polymer composition surrounding the element(s), wherein said polymer composition is obtainable or obtained by compounding and extrusion of at least the following components:

(a) 24-26.5 wt.-% of a linear very low density polyethylene (VLDPE) composition having a density in the range from 0.85 g/cm 3 to 0.93 g/cm 3 , and having a melting point of above 110° C., wherein the linear very low density polyethylene composition comprises a mixture of two different types of linear very low density polyethylene compositions, which is a mixture of 18-23 wt.-% of a first composition being a homopolymer, having a density in the range from 0.85 g/cm 3 to 0.95 g/cm 3 , as measured according to ISO 1183 and a melt flow index of 8-15, as measured according to ASTM 1238, and 2.0-6.5 wt.-% of a second composition, having a density in the range from 0.85 g/cm 3 to 0.95 g/cm 3 , as measured according to ISO 1183 and a melt flow index of 2-5, as measured according to ASTM 1238;

(b) 9.5-13 wt.-% of one or more polyolefin-elastomers, wherein the polyolefin-elastomer(s) is/are (an) ultra-low density random ethylene-octene copolymer(s) having a glass transition temperature of below −50° C.; and

(c) 61-66 wt.-% of flame retardant filler, which is a hydrated metal-based filler.

2. The elongated article according to claim 1 , wherein the polymer composition further comprises:

(a) 0.1-3.0 wt.-% of an antioxidant; and

(b) 0.5-2.5 wt.-% of a coupling agent composition.

3. The elongated article according to claim 1 , wherein the polymer composition has an elongation at break in the range from 200% to 350%, as measured by IEC 60811-501, measured by using the elongated article without the one or more elements.

4. The elongated article according to claim 1 , wherein the linear very low density polyethylene composition comprises a mixture of two different types of linear very low density polyethylene compositions.

5. The elongated article according to claim 1 , wherein the polyolefin-elastomer has a density in the range from 0.80 g/cm 3 to 0.90 g/cm 3 , as measured according to ASTM D792.

6. The elongated article according to claim 1 , wherein the polyolefin-elastomer has a value of ShoreD hardness of less than 20, as measured by ASTM D2240.

7. The elongated article according to claim 1 , wherein the flame retardant filler is fine precipitated hydrated metal-based filler.

8. The elongated article according to claim 1 comprising from 1 to 3 elements and the elongated article has an outer diameter of less than 6.2 mm.

9. The elongated article according to claim 1 , wherein the polymer composition does not contain a high density polyethylene homopolymer having a density of 0.94 g/cm 3 or higher.

10. The elongated article according to claim 1 , wherein, the glass transition temperature of the polyolefin-elastomer/ ultra-low density random ethylene-octene copolymer is −58° C.

11. The elongated article according to claim 1 , wherein the density of the polyolefin-elastomer/ ultra-low density random ethylene-octene copolymer is in the range from 0.80 g/cm 3 to 0.90 g/cm 3 , as measured according to ISO 1183.

12. The elongated article according to claim 1 , wherein the linear very low density polyethylene (VLDPE) composition has a melting point above 110° C.

13. The elongated article according to claim 1 , which passes the alternate bending test (EN 50396) with 30,000 cycles.

14. The elongated article according to claim 1 , wherein the polymer composition does not contain a plasticizer.

15. The elongated article according to claim 1 , wherein the polymer composition does not contain a polysiloxane.

16. The elongated article according to claim 1 , wherein the polymer composition is not UV crosslinked.

17. The elongated article according to claim 1 , wherein the polymer composition has a strength at break in the range from 5.5 MPa to 12.0 MPa, as measured by IEC 60811-501.