The quality defense battle in the production process of glass bottles

The production process of glass bottles involves multiple key steps such as raw material blending, melting, forming, and annealing. If any parameter in any of these steps is out of control, it may lead to product defects. Therefore, conducting full-process and high-precision monitoring of the production process is the core measure for glass bottle manufacturers to ensure product quality.

In the raw material blending stage, manufacturers need to strictly mix raw materials in accordance with the formula ratio based on the different specifications and uses of the products. The accuracy of the ingredients directly affects the melting quality of the glass liquid. If the proportion is unbalanced, it may lead to abnormal viscosity of the glass liquid, which in turn affects the subsequent molding effect.

The melting process is the core step in the production of glass bottles, which usually requires heating the raw materials to a high temperature of 1500-1700℃ to melt them. During this process, the manufacturer needs to monitor key parameters such as furnace temperature, melting time, and slurry composition in real time. A stable furnace temperature can ensure that the raw materials are fully melted and homogenized, eliminating defects such as bubbles and streaks. Reasonable control of the melting time can prevent the residue of stones due to insufficient melting or the waste of energy and changes in composition caused by excessive melting.

The forming process determines the size and shape of the glass bottle. Manufacturers need to closely monitor parameters such as the temperature and pressure of the mold. Glass bottles of different shapes have different requirements for mold temperature and pressure. For instance, when making irregular-shaped bottles, the mold pressure needs to be precisely adjusted to prevent problems such as deformation of the bottle body and uneven wall thickness. At the same time, regular maintenance and upkeep of the molds should be carried out to check if the mold surface is worn out, so as to avoid affecting the appearance and dimensional accuracy of the products due to mold issues.

The annealing process is aimed at eliminating the internal stress of the glass bottle to prevent it from cracking during subsequent processing or use. Manufacturers need to formulate reasonable annealing temperature curves and holding times based on the composition, thickness and shape of the glass bottles to ensure a uniform temperature field in the annealing kiln, allowing the glass bottles to cool down slowly. This can effectively reduce internal stress and enhance the stability and durability of the products.