Also considered safety glasses, screen-printed or enamelled glasses will have glass enamels applied, so then they go through a furnace of 700ºC. During the heating process, the enamel fuses into the glass, acquiring tempered properties.
The difference between screen-printed and enamelled glasses is the way the enamel is applied. For screen-printed ones the printing process is performed. Regarding the enamelled glass, enamel is applied by a rolling process.
In Minas Gerais, Divinal Vidros commercializes enamelled and screen-printed glasses by Tempered®