The process provides information about a complex method of shaping glass containers.
Overall, there are four main stages, beginning with heat the glass, pressed into shape, heated in a klind. After this, the glass is cooled and finally packed into boxes. The process is straightforward but requires proper equipment and daily work to produce safe glass products.
To begin with the first stage, the glass is placed in a furnance where it melted at a high temperature (105°C). At the second stage, the hot glass is poured into a mould and it pressed into shape, so a premilinary form is made. In the second mould, a thicker shape is formed, while the air is blown inside.
Subsequently, the glass container is heated in a kiln at a temperature of 482°C in order to strengthen it. Next, it is cooled down for about 60 minutes until it reaches room temperature (25°C). Then, the finished product is inspected by a worker to check its quality. Finally, the good containers are packed into boxes, while defective ones are rejected and thrown away as waste.