PLASTICS
Plastic is a very common packaging material
It is lightweight
It can be easily moulded by using heat (THERMO PLASTICS) and pressure (Injection moulded, Blow moulded and Vacuum formed, Extruded)
It is available in lots of colours
They are self finishing (they don't need a surface finish eg, paint/varnish)
You need to know the main types and what they are used for.
PLASTIC PROPERTIES
Some plastics are used for certain PROPERTIES (characteristics)
For Example:
PET
Is stiff and tough, making it excellent for fizzy drinks as it can hold the pressure of the bubbles inside
Is very resistant to high temperatures (up to 120o making it great for use in an oven.)
LDPE, HDPE & PET
Can withstand extreme cold temperatures and are used for frozen foods.
PP, PS & PVC
Commonly used for chilled (fridge stored) foods.