The provided diagram illustrates the nine-stage process involved in recycling plastic bottles. Overall, the procedure is a cyclical operation that begins with the collection of waste and concludes with the manufacturing of new end products, highlighting the transformation of plastic through mechanical and thermal stages.
The process commences when individuals deposit used plastic bottles into collection bins. These are subsequently transported by truck to a recycling centre, where workers manually sort the items to separate recyclable materials from waste. Once sorted, the bottles are compressed into large, dense blocks to facilitate handling. These blocks then undergo a crushing stage, followed by a thorough washing process to remove impurities.
In the subsequent phase, the cleaned plastic is processed into small pellets. These pellets are then subjected to heat to form raw material, which is typically stored in stacked blocks. Finally, this raw material is utilised to manufacture various end products, including new plastic bottles, containers, clothing, and stationery. Once these items reach the end of their lifecycle, they are returned to the initial collection stage, thereby completing the recycling loop.