- Applications of plastics have increased at a much faster rate than either metals or ceramics during the last 50 years .
- Many parts previously made of metals are now being made made of plastics .
- For example : plastic containers have been largely substituted for glass e.g. bottles and jars .
- Plastics can be shaped into a wide variety of product :
-Extruded section
Films
-Sheets
-Insulation coating on electric wires
-Fibers for texties
-Flooring and partition
- In addition , plastics are often the principal ingredient in other materials , such as
- Paints and varnishers
- Adhesives
- Various polymer matrix composites
- Many plastic shaping processes can be adapted to produce items made of rubbers and polymer matrix composites .
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