Patents
The present invention provides a synergistic composition and a process for the production of transparent frit. This composition is and a process is useful in manufacturing rapid once fired ceramic wall tile glossy glaze. The synergistic frit composition of the present invention essentially consists of quartz, clay, k-felspar, colemenite, wallastonite, soda ash, calcite and zinc oxide. The synergistic frit composition of the present invention allows the production of transparent frit which is free from unmelted inclusions and trapped carbonaceous material and suitable for manufacturing defect free glossy glaze surfaces. Use of alkaline earth oxides and calcium borate as powerful fluxes plays a key role in order to achieve the desired fusion, flow values and thermal expansion characteristics. 90 wt% of the presently developed frit can be used with 10 wt% white burning clay to prepare glossy glaze material for rapid once fired ceramic wall tile.