4. INTRODUCTION
PLASTIC IS THE GENERAL COMMON TERM FOR A wide range of synthetic or semisynthetic organic solid
materials suitable for manufacture of industrial products. Plastics are typically polymers of high molecular
weight and may contain other substance to improve performance and reduce costs.
Plastic is one of the few new chemical materials which pose environmental problems.
Polyethylene, polyvinyl chloride, polystyrene is largely used in the manufacture of plastics.
5. advantages
1. Light in weight.
2. Easy to clean.
3. Cheap to produce.
4. Water, chemical and corrosion resistance.
5. Easily mold.
6. Excellent finishing.
7. Unbreakable.
8. Recycling and versatile.
9. Order less
10. Good adhesive property
6.
7. DISADVANTAGES
PRODUCE TOXIC FUMES WHEN BURN.
LOW HEAT RESISTANT.
NON BIODEGRADABLE.
CREATE POLLUTION.
RECYCLING IT’S costly.
Poisonous gaseous product during decomposition causes cancer.
Chocking the drain system.
Landfilling.
Kill animals.
Destroy environment.