公开(公告)号：US20190276354A1

公开(公告)日：2019-09-12

申请号：US16334210

申请日：2017-09-19

Applicant: SAINT-GOBAIN GLASS FRANCE

Inventor： Elodie DUCOURTHIAL ,  Juliette MARIA ,  Christian RAVAGNANI ,  Marion LALLEMENT

IPC: C03C17/42

Abstract: A glass substrate includes on a face a water-insoluble polymeric temporary protective layer intended to be removed by heat treatment during a processing operation, and an enamel layer that has a mixture of glass frit, inorganic pigments and organic components that is deposited on at least one portion of the protective layer. The enamel has a glass transition temperature Tg above the temperature Tc60%, defined as being the temperature at which 60% of the initial weight of the protective layer is consumed, a maximum shrinkage measured by thermomechanical analysis between 450° C. and 650° C. greater than 20%, a difference between the inflection point temperature Tinflection and the glass transition temperature Tg less than 60° C., the inflection point temperature being defined as being the temperature at which the rate of displacement measured by thermomechanical analysis of the enamel is maximum, and a content of inorganic pigments less than 35% by weight.