The flowchart illustrates the process by which plastic bottles are recycled.
Overall, it is a linear process consisting of nine sequential steps, which can be classified into three main stages: collection, processing, and the manufacturing of new products.
The process commences with people putting used plastic bottles into designated recycling bins. Following this, the discarded plastic materials are collected by a garbage truck and transported to a recycling centre. The bottles are sorted manually. Once the sorting process has been completed, the selected materials are crushed into small fragments by a particular machine. These fragments are subsequently washed to remove impurities.
In the next stage, the cleaned plastic pieces are fed into a pelletizing machine, where it is turned into small plastic pellets. The pellets are then heated to produce a raw material which is formed into blocks. In the final stage, this recycled material is used to manufacture a variety of products including bottles, clothes, reusable plastic bags and educational materials. Some of these items can be recycled again.