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Types of Plastic

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There exist about 50 different types of plastics. Broadly plastics can be classified into two types namely Thermosetting and Thermoplastic. The Thermosetting Plastics are those that cannot be soften again, after being exposed to heat and pressure. On the action of heat and pressure, the molecular chain of thermosetting plastics become cross-linked, due to what it forbids the slippage when pressure& heat are reapplied.

The thermoplastic are those that can be soften again and again & remade by the action of heat and pressure. On the action of heat and pressure, the molecular chain of thermoplastics undergoes change and the polymers slide past each other, that results in the property of plasticity. Some of the different thermoplastic and thermosetting plastics are mentioned below.


Apart from these, plastics have been also divided into seven different types by the plastic industry. These seven types of plastics are :-

  1. Polyethylene Terephthalate (PETE) :- PETE is one the most recycled plastic. It finds usage in various bottles like that of soda and cooking oil, etc.


  2. High Density Polyethylene (HDPE) :- HDPE is generally used in detergent bottles and in milk jugs.


  3. Polyvinyl Chloride (PVC) :- PVC is commonly used in plastic pipes, furniture, water bottles, liquid detergent jars etc.


  4. Low Density Polyethylene (LDPE) :- LDPE finds its usage in dry cleaning bags, food storage containers etc.


  5. Polypropylene (PP) :- PP is commonly used in bottle caps and drinking straws.


  6. Polystyrene (PS) :- PS is used in cups, plastic tableware etc.


  7. Other :- This category of plastics include those plastics which are different from the six aforesaid types of plastic. These plastics are usually used in food containers and in Tupperware.



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