This process diagram shows how glass containers are made. The steps of the process are numbered 1 to 9.

The given diagram illustrates the process of making

glass

containers

.

Overall

, there are nine steps, starting from heating

glass

particles at high temperatures and ending with the production of

glass

containers

,

as well as

sorting out defective products. In the first step,

glass

particles are heated in a furnace at 1050°C until they melt and become malleable. The molten

glass

is

then

placed into the first mould, where it is pressed to form a basic shape.

After

this

, the

glass

is transferred to a second mould to shape it into a container. In the next step, air is blown into the mould to ensure the container has the correct shape. Once the container is formed, it is heated again in a kiln at 482°C to strengthen the

glass

.

After

this

heating process, the

containers

are cooled for 60 minutes at 25°C to harden them. The finished

containers

are

then

inspected by workers. Any

containers

that pass quality checks are packaged for distribution,

while

those that do not meet standards are discarded as waste.