Siemens Aktiengesellschaft

Michael Huber Gmbh

Sybille Von Tomkewitsch

Ferdinand Quella

Antoon Mattelin

Hans-Friedrich Schmidt

Luc Boone

Hans-Fr Schmidt

Marc De Vogelaere

Pol Pecceu

Juergen Frankel

A method and coating material for applying electrically conductive printed patterns to insulating substrates is provided. The coating material includes a non-metallic, grainy carrier substance having metal of the oxidation degree 0 applied thereto. An energy radiation source, particularly of a deflectable laser beam, is used to secure anchoring of the carrier substance to the substrate in the region of the desired printed pattern. As a consequence of a three-dimensional arrangement of the metal, a three-dimensional nuclei distribution is produced that leads to a reliable and fast metallization of the printed pattern on the basis of chemical metal deposition. The method of the invention is especially suited for laser pattern transfer for the manufacture of printed circuit boards.

Method and coating material for applying electrically conductive printed

Conductive plastic parts having defined electrical properties within a relatively narrow range are produced by controlling the dosage relationship between a given plastic and a conductive material, such as long-chain conductive lampblack, as a function of an electrical value (i.e., surface resistance) measured at an extruded admixture of the plastic and conductive materials, rather than by a gravimetrical or volumetrical relation.

Method of producing conductive plastics

Growing community of inventors

Poecking, Germany

Sybille Von Tomkewitsch