3
Setting Atomization Air Pressure
The key in setting air pressure is understanding that the fluid
volume and pattern width a user desires will determine the
PSI required for atomization. That being said, it is impossible
to give an exact setting for all users since each has their own
needs and objectives.
On average, our customers have atomization air pressures set
in the range of (25psi-50psi / about 1.7 - 3.5 Bar). Factors
such as a user’s process, substrates and application will dictate
the required fluid volume and pattern width and subsequently
the correct air pressure needed. For example an application
requiring a very small amount of adhesive sprayed in a very
narrow pattern will require low air pressure. There are some
users spraying in the area of 20psi (about 1.4 bar). However,
we also have users where there’s a need for greater fluid
volume sprayed in a wide pattern and the air pressure is set at
over 60psi (about 4.13 bar).
Adjust the air pressure to where the adhesive appears in very
fine droplets. The diagrams on the right illustrate CORRECT
and INCORRECT atomization air pressures as it relates to fluid
volume and pattern width.
A. Correct Atomization Air Pressure.
Atomization air is set correctly for the fluid volume and
pattern. Simalfa appears in fine droplets to maximize the
efficiency and performance.
B. Incorrect Atomization Air Pressure.
Droplets too coarse for the pattern width and fluid volume.
Simalfa will not perform as designed.
SOLUTION: Increase air pressure so droplets appear fine, and/
or decrease pattern width, and/or decrease fluid volume so
adhesive appears in fine droplets as in diagram A.
S E T U P + U S E
A
B
