Patent ID: 6592791
Filing Date: 2003-07-15
Classification: B29K,H01B

Abstract:
A method for the formation of a strippable semiconductive shield comprising the steps of adding a conductive carbon black in an amount sufficient to give the strippable semiconductive shield an electrical resistivity below 500 &OHgr;m and an adhesive-adjusting additive of a copolymer which consist essentially of ethylene and a comonomer having in its molecule at least one carbon-oxygen dipple, said copolymer having a molecular weight less than 20,000 daltons but a Mettler drop point higher than 30Â° C. to a base polymer which is a copolymer of ethylene with a mono-unsaturated ester, when the adhesive-adjusting additive is 1-20% by weight of the base polymer;blending said conductive carbon black, said adhesion-adjusting additive and said base polymer and extruding said blended conducting carbon black, adhesive-adjusting additive and base polymer to form the strippable semiconductive shield.