KEY CONCEPTS OF THE CLASSIFICATION OF PLASTICS

1. THERMOPLASTICS are usually made from petroleum products. The most common are:
- Polyethylene terephthalate
- High-density polyethylene
- Polyvynyl chloride
- Low-density polyethylene
- Ploypropylene
- Moulded polystyrene
- Expanded polystyrene

2. THERMOSETTING PLASTICS are made from petroleum products. They include:
- Polyurethane
- Bakelite
- Melamine
- Polyester resins

3. Typical ELASTOMERS include rubber and neoprene.