| http://www.w3.org/ns/prov#value | - Within the scope of the invention, it is also possible for the filler materials to be formed by granular and/or spheroidal insulating materials, for example pre-expanded polystyrene or the like, which form the carrier element together with the electrically conductive synmthetic resin material as the bonding agent, the thermally insulating layer thereby advantageously being utilised for generating
|
