THE CLASSIFICATION OF PLASTICS

• Thermoplastics are usually made from petroleum products. The most common thermoplastics are:

1. Polyethylene terephthalate (PET)
2. High-density polyethylene
3. Polyvinyl chloride (PVC)
4. Low-density polyethylene
5. Polypropylene
6. Moulced polystyrene
7. Expanded polystyrene or Styrofoam

• Thermosetting plastics are made from petroleum products. They include:

1. Polyurethane
2. Bakelite
3. Melamine
4. Polyester reisns

• Typical elastomers includ rubber and neoprene