We often use various glass products in our lives, such as glass windows, glasses, glass sliding doors, etc. Glass products are both beautiful and practical. The glass bottle is made of quartz sand as the main raw material, and other auxiliary materials are melted into liquid at high temperature, and then the essential oil bottle is poured into the mold, cooled, cut, and tempered to form a glass bottle. Glass bottles generally have a rigid logo, and the logo is also made of a mold shape. According to the manufacturing method, the molding of glass bottles can be divided into three types: manual blowing, mechanical blowing and extrusion molding. Let’s take a look at the production process of glass bottles.
The production process of glass bottles:
1. Pre-processing of raw materials. Crush the bulk raw materials (quartz sand, soda ash, limestone, feldspar, etc.) to dry the wet raw materials, and remove iron from the iron-containing raw materials to ensure the quality of the glass.
2. Batch preparation.
3. Melting. The glass batch material is heated at a high temperature (1550~1600 degrees) in a pool furnace or a pool furnace to form a uniform, bubble-free liquid glass that meets the molding requirements.
4. Forming. Put the liquid glass into a mold to make a 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 internal stress, phase separation or crystallization of the glass is cleaned or generated, and the structural state of the glass is changed.