Do you know how a plastic bottle is made? At first, the raw material used for making the bottle is heated and blown. It is then passed through another mould which gives it shape.
The production of a plastic bottle is possible because the raw material can be moulded into any shape at a certain temperature. It then solidifies after cooling. Polymers of this kind are known as thermoplastics. Thermoplastics soften up on heating and harden when they are allowed to cool down They can be melted and recast into any possible shape. PET bottles and toys are has usually made of thermoplastics.
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