How are plastic articles available in diffrent shapes and sizes?
Plastic is a unique material which becomes soft on heating and hard on cooling. It melts at moderately high temperature without decomposing.
As liquids have a tendency to take the shape of container therefore, when molten plastic is poured in different vessels, it takes the shape of vessel on cooling. Thus a plastic can be moulded into different shape and sizes.
As liquids have a tendency to take the shape of container therefore, when molten plastic is poured in different vessels, it takes the shape of vessel on cooling. Thus a plastic can be moulded into different shape and sizes.