The float glass production process begins with the melting of raw materials, including silica sand, soda ash, and limestone, at high temperatures. This molten mixture is then floated on top of molten tin, allowing the glass to spread evenly and form a continuous sheet. As the glass moves through the annealing lehr—a controlled cooling chamber—it gradually solidifies and is cut into standardized sheet sizes.
The key to successful slumping lies in controlling several factors, including the temperature, time, and the type of mold used. This level of precision allows designers to achieve intricate shapes and stunning finishes, which can be further enhanced by incorporating patterns, colors, and textures before the slumping process begins.
3. Annealing After floating, the glass is gradually cooled in an annealing lehr to relieve internal stresses, ensuring durability and preventing breakage.