What are the characteristics of dry pressed ceramic tiles?
The new standards, surface area greater than 6400 square centimeters, the thickness of not more than 13.5 mm; surface area less than 3600 square centimeters of the thickness of ceramic tiles thickness less than 10 mm; surface area between 3600 to 6400 cm, thickness less than 11 mm.The new standard also raised the technical requirements of extruded ceramic tiles, and further eliminate backward production capacity. The low water absorption extruded ceramic tiles are divided into two types with a water absorption rate of less than 0.5% and between 0.5% and 3%. The extruded ceramic tile with a water absorption ratio between 3% and 10% is eliminated.
Now all ceramic tile products on the market are mostly pressed by dry pressing process. Its production process is that the raw material is milled with water and made into mud, and then the mud is sprayed and dried to form a dry powder containing a certain amount of water, and then pressed and formed by the press. I think it is characterized by: molding speed, large output; after forming semi-finished products, high strength, can be carried out after the process of surface decoration.
Features: dry pressed ceramic tiles according to the water absorption rate is divided into cizhizhuan (E < 0.5%), stoneware tiles (0.5%<E = 3%), fine stoneware (E = 3% ~ 6%), brick (E = 6% ~ 10%) and ceramic tiles (E>10%).The newly revised "ceramic brick" (GB/T 4100-2015) national standard released in May 15, 2015, will be implemented from December 1, 2015. The standard for the first time to limit the thickness of dry pressed ceramic tiles, to improve the technical requirements of the extrusion of ceramic tiles, increasing the requirements of the back of the wall tiles and so on.
