The main raw materials of flat glass are: silica sand (sandstone), soda ash, feldspar, dolomite, limestone, thenardite.

Process:

1. Raw material crushing: The above raw materials are broken into powder.

2. Weighing: Weigh a certain amount of various powders according to the planned ingredients.

3. Mixing: Mix and stir the weighed powder into a batch material (coloring glass is added with coloring agent at the same time).

4. Melting: The batch material is sent to a glass melting furnace and melted into a glass liquid at 1700 degrees.

5. Molding: The glass liquid is sent into a tin bath (floating method), a flat drawing machine (later method), a calendering machine (calendering method, adding a wire into a wire glass), and forming into a flat glass.

6. Annealing: The formed glass products are sent to an annealing kiln for annealing to balance the stress and prevent self-breaking.

7, inspection, packaging.