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How glass bottles are made

2024-05-12 11:49

The production process of glass bottles mainly includes: ① raw material preprocessing. Crushing block shaped raw materials (quartz sand, soda ash, limestone, feldspar, etc.) to dry wet raw materials, and removing iron from iron containing raw materials to ensure glass quality. ② Preparation of batch materials. ③ Melting. The glass batch is heated at high temperature (1550-1600 degrees) in a tank or furnace to form a uniform, bubble free liquid glass that meets the molding requirements Forming. Put liquid glass into a mold to make glass products of the required shape, such as flat plates, various vessels, etc. ⑤ Heat treatment. By annealing, quenching and other processes, it can clean or generate stress, phase separation or crystallization inside the glass, as well as change the structural state of the glass.

Firstly, it is necessary to design, determine, and manufacture a mold. The glass raw material is mainly quartz sand, and other auxiliary materials dissolve into a liquid state at high temperatures. Then, it is injected into the mold, cooled, cut, and tempered to form a glass bottle. Glass bottles generally have rigid markings, which are also made from the shape of the mold. The molding of glass bottles can be divided into three types according to the production method: manual blowing, mechanical blowing, and extrusion molding.


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