Question 5
(a) List three constituents of paint.
(b) State two causes of spray fog.
(c) With the aid of a sketch, show: (i) correct spray pattern; (ii) heavy centred pattern.
Observation
(a) Three Constituents of Paint
- - Pigment;
- - Binder;
- - Solvent (thinner) and
- - Additives.
(b) Two Causes of Spray Fog
- - Over atomization of the paint
- - Too thin a paint
- - Wrong use of spray gun
(c) The Sketches of Correct and Heavy-Centred Spray Pattern
