Explanation:
slide 1=Plastics engineering encompasses the processing, design, development, and manufacture of plastics products. A plastic is a polymeric material that is in a semi-liquid state, having the property of plasticity and exhibiting flow. ... The nature of plastic materials poses unique challenges to an engineer.
slide 2=Plastics are made from natural materials such as cellulose, coal, natural gas, salt and crude oil through a polymerisation or polycondensation process. The production of plastics begins with the distillation of crude oil in an oil refinery.
slide 3=
1-Polyethylene Terephthalate (PET or PETE) This is the first type of commercially-distributed plastic, labeled with a 1 and PETE. ...
2 – High-Density Polyethylene (HDPE) ...
3 – Polyvinyl Chloride (PVC) ...
slide 4=Plastic packaging helps protect and preserve goods, while reducing weight in transportation, which saves fuel and reduces greenhouse gas emissions. From computers and cell phones to televisions and microwaves, durable, lightweight and affordable plastics have helped revolutionize the electronics we rely on every day.
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