Datasheet

Page 3
Spraying - Aerosol
When applying CPL in aerosol form care must be taken to ensure the can is not shaken before use. Shaking the
can will introduce excessive air bubbles and will give a poor coating finish.
The can should be held at 45° and 200mm from the substrate to be coated. The valve should then be
depressed when the can is pointing slightly off target and moved at about 100mm / second across the target. To
ensure the best coating results are achieved try to use a smooth sweeping motion with small overlap for
successive rows.
To ensure penetration of the coating beneath the components and in confined spaces, spray the assembly from
all directions to give an even coating. After spraying, the boards should be placed in an air-circulating drying
cabinet and left to dry.
Dip Coating
Ensure that the coating material in the container has been agitated thoroughly and has been allowed to stand
for at least 2 hours for all the air bubbles to disperse.
Non acrylic conformal coating thinners (DCT) should be added periodically as the solvent evaporates to ensure
the coating remains at a viscosity of between 20 – 30mPa s. The viscosity should be checked using a viscosity
meter or "flow cup".
0
5
10
15
20
25
30
35
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Viscosity (mPa s)
Temperature (⁰C)
Viscosity Change with Temperature - CPL