METHOD OF GLASS SURFACE DECORATIVE METALLIZATION Russian patent published in 2017 - IPC C03C17/06 

FIELD: technological processes.

SUBSTANCE: invention relates to methods of coating a glass back surface with metallic materials by means of laser radiation, in particular, with the help of a laser beam transfer through a glass, which is the processed article. Metallic image on the back side of a transparent for a laser beam sheet window glass composition SiO₂ – 71.8 %, Na₂O – 14.8 %, CaO – 6.7 %, MgO – 4.1 %, Al₂O₃ – 2 %, SiO₃ – 0.5 %, Fe₂O₃ – 0.1 % as the result of the metal evaporation is formed in two passages of a pulse ytterbium fibre laser beam with the wavelength of 1.06 mcm. Herewith a metallic substrate of the evaporated from its surface metal is pressed mechanically on the back side of the sheet glass, and surfaces of the glass and the metallic substrate are preliminarily cleaned, the metallic substrate surface is smoothed and ground in order to improve the mutual fit.

EFFECT: formation on the back surface of a sheet glass transparent for a laser beam of a decorative image from a thin metal film formed by the laser beam evaporation of metal being in direct contact with the back surface of the glass.

1 cl, 4 dwg