1994: European patent no. 0499775 was granted
Verfahren und Vorrichtung zum Gleitfähigmachen eines Drahtes“ (Solvent-free lubrication of magnet wire)
HELILUB® technique uses a tension and speed controlled string – which has previously been impregnated with a melting, solvent-free lubricant – wrapped around a wire. It gives a multiple 360° contact under controlled friction with constantly renewed string, and guarantees reliable surface preparation. Controlled friction and speed difference of string and wire as well as the precisely calibrated amount of lubricant on the string determine the amount of lubricant applied to the wire and permit prediction of parameters and calculation of results.
This technology has been approved for round wires of 0.012 to 5 mm in diameter.