Patent ID: 9139463
Filing Date: 2015-09-22
Classification: C03B,C03C

Abstract:
1. A unit for treating the surface of flat glass, in particular in the form of a ribbon or a plate, particularly by modifying the chemical, optical or mechanical properties, or by the deposition of one or more thin layers, comprising heating and cooling means for creating a heat flux across the glass, means for heating the face to be treated to bring it to the requisite temperatures and during the periods necessary to obtain effective treatments of its surface, and means for cooling the opposite face to lower its temperature to a level corresponding to a viscosity of between 10 13 dPas and 2.3×10 10 dPas; and further comprising in succession: wherein the length of the initialization zone for reaching the target temperatures at the face to be treated and that the opposite face is determined so that the Peclet number Pe is between 0.5 and 15 as determined by with: t