Patent ID: 8039095

Claim:
A laminate electrical insulation part for an electrical device comprising: a thermoplastic film positioned between, adjacent to, and attached to two nonwoven sheets, each of the nonwoven sheets consisting of multicomponent polymeric fibers comprising: at least a first polymer and a second polymer, the first polymer having a melting point that is at least 15 degrees Celsius lower than both the melting point of the second polymer and the melting point of the thermoplastic film; the thermoplastic film attached to the nonwoven sheets by the first polymer in the nonwoven sheets, and wherein, the electrical insulation part has a breakdown voltage of at least 3 kilovolts, and a surface having a dynamic frictional coefficient of 0.25 or less, with the proviso that a fiber of the multicomponent polymer fibers is a bicomponent fiber and contains the first polymer and the second polymer in either: (i) a sheath core arrangement with the sheath including the first polymer and the core including the second polymer or, (ii) a side-by-side arrangement.