The invent of PET in the era of 70s, saw the first plastic bottle which was capable to be utilised for storing water. Plastic later got utilised on a large scale for storing water due to the bottles being light weight and being less prone to be cracked or broken. Now days in the recent times around the year 2015 this plastic which was utilised to bottle drinking water, due to various regulatory changes made by many governments, was changed and made much thinner. We mostly use pET to make bottles for drinking water because of one major advantage it possesses- it is recyclable and can be easily manufactured hence it is environment friendly and cost effective. We basically use injection moulding to manufacture solid or strong components while we use blow moulding to make plastic products with hollow areas, such as bottles, containers, etc . The Blow Moulding Process - During the blow moulding process, we shape the raw plastic material into a hollow tube