Method for setting a metallic wire or tape on a thin sheet and roll of this sheet

摘要

The process applies threads or strips (3a-3d) of high-permeability magnetic material to the sheet (2) of plastic, paper or aluminium which can be assembled to another sheet (1) with the metal sandwiched between the two. The threads or strips are arranged in wavy lines (S) along the length of the sheet so that when the latter is coiled, sections of metal situated in adjacent turns of the coil and in the same plane through its axis are laterally offset.