Glass Bottles Manufacturing Process Flow Diagram

The production process of glass bottles includes raw material preparation, melting, molding, cooling annealing, surface treatment and testing. The raw materials are dried and melted into molten glass, which is made into glass bottles through molding technology. Cooling annealing improves stability, and finally surface treatment and quality inspection are carried out. Each step is strictly controlled to ensure high-quality products. The main process is as follows: General Speaking, the manufacture of glass bottle mainly in four phases:

• (1) Preparation of raw material.
• 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 deironed to ensure the quality of the glass.
• (2) Melting in a furnace.
• The glass material is heated at 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.
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• (3) Forming by molds.
• Liquid glass is placed in a mold to make glass products of the desired shape. Generally, the preform is formed first, and then the preform is formed into a bottle body.
• (4) Finishing into packing.
• Through annealing, quenching and other processes, the stress, phase separation or crystallization inside the glass can be cleared or generated, and the structural state of the glass can be changed.
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The technology of glass production from the beginning to the getting of the final product consists of large investments and a thorough knowledge of the chemical formulae of the manufacture. For large companies, these are the basic requirements. It is possible to obtain this material by using of two methods: the Fourcault process and the float glass process. The technology of the Fourcault process is based on rolling of hot glass mass through specially designed rollers.