Plastic is a polymer organic material which is mainly composed of a resin and shaped into a certain shape under a certain temperature and pressure, and can maintain a predetermined shape at a normal temperature.
The plastics industry manufactures polymer materials — commonly called plastics — and offers services in plastics important to a range of industries, including packaging, building and construction, electronics, aerospace, and transportation.
It is part of the chemical industry. In addition, as mineral oil is the major constituent of plastics, it is regarded a part of the petrochemical industry.
Besides plastics production, plastics engineering is an important part of the industrial sector. The latter field is dominated by engineering plastic as raw material because of its better mechanical and thermal properties than the more widely used commodity plastics.
Resin refers to an organic polymer which is usually converted or melted when heated, fluidized by external force during conversion, and is solid or semi-solid or liquid at normal temperature. It is the most basic and most important component of plastics. Broadly speaking, any polymer that is a basic material for plastics in the plastics industry can be referred to as a resin.
