Glass knowledge: come to understand the production process of glass bottles!

In our daily life, we often use various glass products, such as glass windows, glasses, glass sliding doors, etc. Glass products are both beautiful and functional. The raw material of the glass bottle is quartz sand as the main raw material, and other auxiliary materials are melted into a liquid state at high temperature, and then the essential oil bottle is injected into the mold, cooled, cut, and tempered to form a glass bottle. Glass bottles generally have rigid signs, which are also made from mold shapes. The molding of glass bottles can be divided into three types: manual blowing, mechanical blowing and extrusion molding according to the production method. Let’s take a look at the production process of glass bottles.

The production process of glass bottle:

  1. Raw material preprocessing. The bulk raw materials (quartz sand, soda ash, limestone, feldspar, etc.) are crushed, the wet raw materials are dried, and the iron-containing raw materials are processed to ensure the quality of the glass.

2. Batch preparation.

3. Melting. The glass batch is heated at a high temperature (1550~1600 degrees) in a pool kiln or pool furnace to form a uniform, bubble-free liquid glass that meets the molding requirements.

4. Forming. Put the liquid glass into the mold to make the glass product of the required shape, generally the preform is formed first, and then the preform is formed into the bottle body.

5. Heat treatment. Through annealing, quenching and other processes, the stress, phase separation or crystallization inside the glass is cleaned or generated, and the structural state of the glass is changed.