3. What is plastic ?
Plastic, refers to any synthetic organic
material that can be moulded under heat,
and pressure, into a shape that is retained
after the heat and pressures are removed
5. Which Automotive Plastics exist ?
Thermoplastics :- When heated become
malleable without sustaining major
chemical changes they can be molten
down & dissolved
Thermosets :- Are cross-linked
materials that will not fuse or dissolve
6. Colour Achievement
° First Generation Bumpers were
Pre-coloured plastic, in the tones
Black or Grey
° This colouring method was severely
limiting due to the plastic blend used
7. Why are Plastics
used in Automotive
engineering ?
Save WeightSave Weight
Save EnergySave Energy
Increase SafetyIncrease Safety
Increase ComfortIncrease Comfort
Reduce NoiseReduce Noise
Reduce MaintenanceReduce Maintenance
Extend Service lifeExtend Service life
9. Plastic Repairs
° Repairing Plastics is often demanded by
Insurance companies in some Countries.
Various repair techniques exist such as
° Plastic Welding
° Plastic Bonding
° Chemical bonding
10. Parts Repair off the Vehicle
° Most structural repairs must be carried
out off the vehicle
° Inside areas may need special attention
to maintain their strength
11. Why Paint a Plastic Part ?
° To help Bond the Surface
° To Protect, improve and
maintain its surface.
° To prevent degradation due
to the environmental factors.
12. Styling & Plastic Parts
Painted Plastics enhance styling through -
° Apperance & Colour
° Improved Gloss
° Easier maintenance
° Special effects
° Two Tone styling
