Process for marking the surface of an item made from a silica-based material and marking product

摘要

A process for marking a glass body (14), by depositing directly onto the outer surface of the glass body (14), in a form representing the motif of the mark, a marking product (10) made from a substantially homogenous mixture of an ink and a silica powder, and heating the glass body (14) at a temperature sufficient to result in vitrification of the marking product (10).