Synthesis Of Break Ring Enamels For Ampoules

Ampoule break ring enamel is a special kind of low temperature enamel whose formulation is complicated , therefore its manufacture is exclusives to a fewspecialized factory . This stressed enamel is a compulsory ingredient of the colored ring or dots around the ampoule neck. The enamels were visually examined for melting behavior ,colour,glass and defects. The selected frits were tested in a factory production line and their three-point flexural strengths were determined