PROTAL process developed by LERMPS and IREPA LASER.

US Patent N°5 688 564 - Date: 18/11/97

This patent presents an original solution of surface preparation aiming to improve the adherence of deposits.

The association of an impulse mode Nd-YAG laser (Q-switched, 10 ns, 120 Hz) with a thermal projection torch (plasma, supersonic flame, flame, electric arc) eliminates the superficial contaminating film on the surface of the substrate (grease, oxides, etc.) and generates a good surface state for the adherence of the deposit.