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. ④Forming. 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.
First, the mold must be designed and manufactured. The glass raw material uses quartz sand as the main raw material, and other auxiliary materials are melted into a liquid at high temperature, and then injected into the mold, cooled, cut, and tempered to form a glass bottle. Glass bottles generally have rigid signs, and the signs are also made of mold shapes. According to the manufacturing method, the forming of glass bottles can be divided into three types: manual blowing, mechanical blowing and extrusion molding. According to the composition, glass bottles can be divided into the following types: First, soda glass, second, lead glass, third, borosilicate glass
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-28-2020