East asia packaging limited is professional china cosmetic bottle manufacturer , china cosmetic jar manufacturer , china perfume bottle manufacturer , china medical bottle factory.
Our production process
First, the main production process of glass bottles
The glass bottle production process mainly includes:
1 raw material pre-processing. The bulk material (quartz sand, soda ash, limestone, feldspar, etc.) is pulverized to dry the wet raw material, and the iron-containing raw material is subjected to iron removal treatment 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 kiln or a pool furnace to form a liquid glass which is uniform, free of bubbles and meets the molding requirements.
4 molding. The liquid glass is placed in a mold to form a glass product of a desired shape, such as a flat plate, various utensils, and the like.
5 heat treatment. Through the processes of annealing, quenching, etc., the stress, phase separation or crystallization inside the glass is eliminated or generated, and the structural state of the glass is changed.
Second, the main raw materials and characteristics of glass bottles
First of all, it is necessary to design and manufacture the mold. The glass raw material is made of quartz sand as the main raw material, and other auxiliary materials are dissolved into a liquid state at a high temperature, and then injected into a 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. The forming of glass bottles can be divided into three types: manual blowing, mechanical blowing and extrusion. Glass bottles can be divided into the following categories according to their composition: one is soda glass, the other is lead glass, and the third is borosilicate glass.
The main raw materials for glass bottles are natural ore, quartz, caustic soda, limestone and the like. Glass bottles are highly transparent and resistant to corrosion and do not change in material properties when in contact with most chemicals. The manufacturing process is simple, the shape is free and changeable, the hardness is large, heat-resistant, clean, easy to clean, and has the characteristics of being reusable. Glass bottles are widely used as packaging materials for food, oil, alcohol, beverages, condiments, cosmetics, and liquid chemical products. However, glass bottles also have their shortcomings, such as heavy weight, high transportation and storage costs, and low impact resistance.
