Paint Terminology N - R
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The following
is a list of paint related terms that are commonly used in
our industry. If you know of a description I missed, please
let me know. Send additional painting terms via e-mail to:
info@sharpe1.com
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N
NITROCELLULOSE
LACQUER:
- Lacquer paint
whose resin is formed with cellulose, a natural resin made from
cotton.
NON-PHOTOCHEMICALLY
REACTIVE:
- Solvents
which do not react with sunlight to cause ozone or smog.
O
O.E.M.:
- Original
equipment manufacturer.
OPAQUE:
- A finish
that is not transparent. Light cannot be seen through it and does
not allow what is underneath to show through.
ORANGE
PEEL:
- Texture in
a paint film that resembles the peel of an orange. Caused by improper
reduction or application.
OSHA
(OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION):
- A federal
agency which sets safety and health regulations for most of the
U.S. industries and businesses.
OVERLAP:
- Placing one
coat of paint alongside another, one partly extending over the
other.
OVER SPRAY:
- Paint which
during application will stick to adjacent panels not being painted.
OXIDATION:
- Chemical
reaction between oxygen and another substance, causing paint film
curing, paint film failure or metal rusting.
OZONE:
- A triatomic
very reactive form of oxygen that is a bluish, irritating gas
of pungent odor. Formed naturally in the atmosphere by a photochemical
reaction and is a major air pollutant in the lower atmosphere
but a beneficial component of the upper atmosphere.
P
PAINT
SETTLING:
- The dropping
or settling of the solids in a reduced or unreduced paint to the
bottom of paint gun or can.
PAINTER VARIABLES:
- Painter can
control range of reduction, air pressure, speed of travel, flash
time, etc.
PANEL REPAIR:
- Refinishing
of a complete panel.
PEELING:
- Loss of adhesion
between one coat of paint to succeeding coats or coatings.
PHOTOCHEMICALLY
REACTIVE:
- Organic solvents
that react with ultra violet light to form oxidants such as ozone
and smog.
PIGMENT:
- An insoluble
finely ground powder, either natural, synthetic, inorganic or
organic. It provides color, hardness, durability, hiding and corrosion
resistance to paint.
PIN-HOLE:
- Paint imperfection
resembling a hole about the size of the head of a straight pin.
Caused by solvent entrapment or air bubbles.
POTLIFE:
- The amount
of time a mixed material is usable.
PRESSURE
POT:
- A sealed
paint cup with a paint gun which puts a measured amount of
air pressure into it. This then forces the paint to the gun for
atomization.
PRIMARY
COLOR:
- Red, yellow
and blue. These colors resemble no other color and cannot be formed
by mixtures of any other colors.
PRIMER:
- The coating
applied to a properly prepared substrate to give corrosion resistance,
adhesion and chemical resistance.
PRIMER-SEALER:
- An undercoat
used to improve adhesion and color holdout with minimum filling
properties.
PRIMER-SURFACER:
- Undercoat
used to fill imperfections, with primer qualities and maximum
filling properties. Must be sanded.
PUCKERED:
- Small wrinkles
or buckles caused by a non-compatibility of additives.
PUTTY (SPOT):
- Materials
used to fill imperfections in a substrate. Composed of a lacquer
or polyester resin. Applied with a squeegee and sanded smooth.
R
RANDOM ORIENTATION:
- The dispersion
of metallic or mica flakes with no specific pattern.
REDUCER:
- A solvent
used to lower the viscosity of an enamel or urethane.
REFINISH:
- The act of
replacing or repairing a painted surface, usually undercoat and
topcoat.
REFLOW:
- Adding heat
to such a degree as to cause the paint to melt and become a liquid.
RESIN:
- A clear or
semi-clear part of a paint film which gives solids or film build.
Resin gives the finish shine, gloss, durability, adhesion, handling
and drying characteristics.
RETARDER:
- Slowest evaporating
solvent.
RUN:
- Excessive
amount of coating failing to adhere uniformly over the surface,
thus flowing unevenly in a small area.
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