HOGFLEXIBEL KABEL ELLER MOTSVARANDE LEDNING

摘要

In a highly flexible cable with stretchable coverings (7; 10) made of insulating materials, at least the inner surface of a covering (10) is covered by a longitudinally-extending stretched and sintered film (11) made of a fluoropolymer e.g. PTFE. This improves the mobility and flexibility of the cable whilst reducing the stretchability of the covering. The film (11) is preferably stretched in one direction only up to 20 times its length before being sintered. This increases the porosity of the film which may be made more porous by perforating with needles. The outer conductor of the co-axial cable is made of wires (8) and glass-fibre threads (9). In another embodiment, a multiplicity of wires (1) are covered by a strip (2), netting (3), a sintered and stretched film of PTFE (5) and a cross-linked silicone rubber sheath (4).