As silicate inorganic materials, glass has relatively stable performance, and is smooth and transparent, which is especially suitable for drug packaging and storage. At the same time, compared with other materials, the price of glass is relatively cheap. In recent years, with the rapid development of the pharmaceutical industry, China's pharmaceutical glass industry and products have been greatly developed and improved, and have become the main packaging materials in the field of drug packaging. Glass packaging materials are widely used in injection, powder injection, freeze-drying machine, biological products, blood products, oral liquid, health care products, etc. glass bottles are widely used in various drug packaging.
The production process of glass bottles mainly includes: 1.Raw material pre-processing. Crush the bulk raw materials (quartz sand, soda ash, limestone, feldspar, etc.) to dry the moist raw materials, and remove the iron-containing raw materials to ensure the quality of the glass. 2.Preparation of batch materials. 3.Melting. The glass batch material is heated at a high temperature (1550~1600 degrees) in the pool kiln or furnace to make it form a liquid glass that is uniform, without bubbles, and meets the molding requirements. 4.Forming. Put the liquid glass into the mold to make the glass products of the required shape, such as flat plates and various utensils. 5.Heat treatment. Through annealing,quenching and other processes, the stress, phase separation or crystallization inside the glass is eliminated or generated, and the structural state of the glass is changed.
The main raw materials of glass bottles are natural ore, quartz stone, caustic soda, limestone, etc. Glass bottles have a high degree of transparency and corrosion resistance, and will not change the properties of materials when in contact with most chemicals. The manufacturing process is simple, the shape is free and changeable, the hardness is large, it is heat-resistant, clean, easy to clean, and it can be used repeatedly. As a packaging material, glass bottles are mainly used in food, oil, alcohol, beverages, condiments, cosmetics, and liquid chemical products, etc., and are widely used.
Post time: Jun-15-2021