Molten glass continuously flows in from the tank kiln and floats on the surface of tin liquid with relatively high density. Under the action of gravity and surface tension, the molten glass spreads flat on the surface of molten tin, and the upper and lower surfaces are flat, hardened and cooled before being introduced into the transition roller table. The roller of the roller table rotates to pull the glass ribbon out of the tin bath and enter the annealing kiln, and the flat glass product is obtained after annealing and cutting.
Compared with other molding methods, the advantages of float method are: it is suitable for manufacturing high-quality flat glass with high efficiency, such as no rib, uniform thickness, flat upper and lower surfaces and parallel to each other; The scale of the production line is not limited by the molding method, and the energy consumption per unit product is low; High utilization rate of finished products; Easy to manage scientifically, realize mechanization and automation of the whole line, and have high labor productivity; The continuous operation cycle can be as long as several years, which is beneficial to stable production; It can provide suitable conditions for some new varieties of online production, such as electro-floating reflective glass, film-sprayed glass during annealing, cold end surface treatment and so on.