The production technology of glass bottles mainly includes:
1, raw material pretreatment. Bulk raw materials (quartz sand, soda ash, limestone, feldspar, etc. ) crushing, drying wet raw materials, removing iron-containing raw materials, and ensuring the quality of glass.
2. Batch preparation.
Step 3 melt. The glass batch is heated at high temperature (1550~ 1600℃) in a tank kiln or a tank kiln to form uniform, bubble-free liquid glass that meets the molding requirements.
4. In the process of forming. Liquid glass is put into a mold to make glass products with required shapes, such as flat plates and various utensils.
5. Heat treatment. Through annealing, quenching and other processes, the internal stress, phase separation or crystallization of glass are eliminated or produced, and the structural state of glass is changed.