METHOD FOR CONTINUOUS PRINTING OF PRECISION STRUCTURES ON A GLASS RIBBON, AND GLASS RIBBON THUS OBTAINED

摘要

The invention relates to a method for printing a precision structure on the surface of a glass ribbon continuously travelling at a speed of at least 1 m/min, using an engraving roller (27) applying a printing force on the surface to be engraved, the structure to be formed comprising projecting and hollow areas with bend radii, prior heat treatment (26 and 32) being performed upstream from the engraving roller; the heat treatment being carried out in order to ensure a temperature of the ribbon (J) on the printing layer and cooling (29) downstream from the engraving roller (27) to ensure controlled solidification of the structure; the method according to the invention being suitable for determining closely linked parameters in order to obtain a specific structure, in particular the printing temperature, the printing force and the cooling rate, taking into account a degree of creeping between the moulding radius (R1) and the radius (R2) after creeping.