| 1K |
A 1K coating is a coating that does
not use hardener to cure. They use solvents to air dry. These are most
commonly found in lacquer finishes but may also be found in enamels,
epoxies, and urethanes depending on how they are they are blended. |
2K |
| 2K |
A 2K coating is a coating that uses
or must have a hardener to cure the coating. Some enamels use hardeners but
don't necessarily require them. These type coatings are said to be "2K" as
well. |
1K |
| Accelerator |
An additive used to reduce dry
times. Generally used where productivity is a concern or where the
application conditions retard drying, i.e. cool temp. or high humidity. |
Drier |
| Acid Rain |
Rain containing industrial
pollution - may be acidic or alkaline in character, which may damage
coatings. |
|
| Acrylic |
A term used to describe a wide
range of resins based on acrylic or methacrylic acid, and paints which have
acrylic resin as a major component. |
|
| Activator |
Most generally used as an
alternative term for hardener or catalyst. |
Hardener
Catalyst |
| Adhesion |
The property or a material
(coating) to attach itself to a surface. This attachment is caused by a
combination of physical and chemical effects. |
|
| Aging |
Degeneration occurring in a coating
during the passage of time and/or heating. |
Weathering |
| Air-Drying |
The process of drying fully during
exposure to air at normal temperatures. |
Drying |
| Airless spraying |
A method of spray application in
which atomization is effected by forcing the paint under high pressure
through a very small orifice in the spraygun cap. Once the paint emerges it
forms a spray pattern. |
|
| Alkyd Resin |
A class of polyester resin
containing an oil or fatty acid. These resins are widely used in paints and
lacquers for automotive and industrial uses. |
|
| Baking |
The process of drying a paint film
at higher than normal temperatures. Generally around 125° - 140° F. |
|
| Base-Coat |
A thin paint film applied prior to
clear-coat which offers more color varieties and higher coverage. |
|
| Blendable Match |
Term used to judge how close the
refinish paint matches the original paint finish. When paint is a blendable
match it is thought to be very close but slightly different. Usually a
blendable match results in an excellent repair when done by a skilled
painter. |
Fade Out Repair |
| Blending Clear |
A version of base-coat clear that
is used for stepping out a paint repair to achieve a blendable match. |
Fade-Out Thinner |
| Blistering |
The formation of domed shaped
projections or blistering the paint film by a local loss of adhesion and
lifting of the film often caused by moisture trapped under the paint film. |
Micro-blistering |
| Blushing |
A milky opalescence appearance
which sometimes occurs when a paint film retains moisture. (Most generally
confined to lacquers but sometimes can happen with other air dry paints and
clears.) |
|
| Bodying |
The thickening of o paint in the
can or spray equipment. |
Pot Life |
| Bounce Back |
Atomized particles of paint which
rebound from the surface being sprayed which contributes to overspray. |
OverSpray |
| Bridging |
The covering over of an unfilled
gap such as a crack or corner with a film of paint. This introduces a
weakness into the coating which may lead to lifting away and cracking of the
dried paint. |
|
| Bronzing |
A metallic luster or iridescent
bloom that may develop on full colored paints based on certain pigments when
used in high concentrations. |
Bloom |
| Build |
The thickness of a dried paint
film. Generally measured in Mils which is .001 of an inch. |
|
| Chalking |
The formation of a white powdery
coating on the surface of a paint film due to degradation of the binding
medium caused by ultraviolet light and other weather conditions. |
|
| Checking |
Cracking in the surface of the
paint film due to stresses produced by severe whether changes. |
|
| Chromate Free |
Coating which does not contain lead
or zinc chromate compounds. Materials such as zinc tetroxy chromate have
been widely used in primer compositions for corrosion inhibition, but have
been identified as carcinogens, particularly on exposure to airborne dust. |
Carcinogen Primer |
| Cissing |
A defect in which a wet paint
recedes from small areas on the surface leaving them either bare or with a
reduced film thickness. |
Cratering
Fisheyes |
| Cloudiness |
Uneven orientation of the metallic
particles, giving an uneven color or cloudiness appearance. Sometimes
referred to as sheariness. Not to be confused with blushing. |
Sheariness |
| Cold cracking |
The cracking or checking of a paint
film caused by sudden or repeated change in the temperature of the film. |
|
| Combi-Unit |
A single unit combining the
functions or both spray booth and oven. |
Bake Booth |
| Corrosion |
Degradation of the metal substrate
by oxidation. That is the formation of oxide layer on the metal surface.
This process requires that the metal surface be exposed to oxygen and
moisture. In the case of steel and iron corrosion is often referred to as
rusting. |
Oxidation
Rust |
| Coverage |
This term is often miss used by the
confusion of two quite different properties of a coating. The misuse is in
the confusion with opacity or hiding power measured as film thickness. The
real definition is an expression of the surface area which a volume of paint
can cover, to a given film thickness. It is therefore a function of the
volume of the solids contained in the coating. Also known as Square foot
coverage or how far a particular amount of paint is expect to cover. |
Opacity
Hiding Power
Solids |
| Cracking |
Generally, the splitting of a dry
paint or varnish film, usually as the result of aging, chemical
incompatibility, or improper procedure. |
Checking
Crazing
Crocodiling
Alligatoring
Spider-webbing |
| Checking |
Fine Cracks which do not penetrate
the topcoat. They may occur over the whole surface or randomly |
Crazing
Spider-Webbing |
| Crazing |
Resembles Checking, but cracks are
deeper and broader. |
|
| Crocodiling / Alligatoring |
A drastic type of Crazing producing
a pattern resembling the hide of a crocodile or an alligator. |
|
| Cratering |
The development of small bowl
shaped depressions in a film of paint. These result from the non wetting of
the substrate due to the presence of low surface tension contaminants.
Sometimes confused as solvent pops. |
Fisheye
Cissing |
| Curing |
The process by which a paint film
hardens through a chemical process of cross linking resulting in a thermoset
product (i.e. epoxies, polyurethanes, siloxanes and polyesters). In some
coatings only solvents need be released during this process which results in
a thermoplastic product (i.e. enamels and lacquers). |
|
| Degreasing |
The process of removing from a
substrate which would otherwise inhibit adhesion of the paint film. |
|
| De-nibbing |
The process of removing dirt nibs
and specs by the use of a fine abrasive paper from the freshly painted
surface. |
|
| Direct Gloss |
A topcoat paint which contains
pigment and resin giving the required gloss level and durability. |
Single Stage |
| Dirt Nibs |
Small particles of foreign matter
trapped in and sticking up from the paint film. |
Trash
|
| Double Coat |
A sprayed coat in which a second
coat is applied immediately following the first coat, thus giving better
build and opacity than a single coat. |
|
| Driers |
A chemical which when added in
relatively small portions to paint film will reduce dry times or cure times
at ordinary temperatures. Not to be confused with hardener, activator, or
catalyst. |
Accelerator |
| Drying |
The process of changing a coating
from a liquid state to solid state by evaporation of solvent, chemical
reaction or binding medium, or a combination of these processes. When drying
takes place during exposure to air at normal temperatures, it is called air
drying; if it can be accelerated by the application of a moderate degree of
heat it is called Force drying or stoving. |
|
| Dry Spray |
Dry particles of paint alighting on
already sprayed material. Most generally this is caused by poor gun setup,
improper solvent selection, painter technique, or failure to circulate the
paint overspray from the room. |
Overspray |
|
Dual Action Sander
D.A. Sander |
A powered hand tool with a circular
disc to which abrasive paper is fixed, suitable for sanding and
featheredging operations. |
Orbital Sander |
| Dye |
A colorant that is soluble (or
absorbed) in the media which it is used. The contrary is true of pigments. |
Pigments |
| Etch Primer |
A primer which chemically etches
the substrate maximizing adhesion and corrosion protection. |
Wash Primer |
| Epoxy |
Descriptive of products containing
a type of polymer made from petroleum derivatives and having good stability
and toughness. Particularly suitable for undercoats in refinish paint
systems where good adhesion, toughness, and chemical resistance is required.
Epoxies most generally are thermoset products but can be thermoplastic in
hybrid formulations. |
|
| Face Tone |
This is connected with metallic
finishes and refers to the color effect obtained by looking directly into
the finish (90°), as distinct from the effect obtained looking obliquely
(45°) at the finish. |
Flip Tone
Flop Tone
Side Tone |
| Fade Out Repair |
A repair in which the refinish
paint is "faded out" into the original finish to obtain an acceptable color
match. |
Blendable Match |
| Fade Out Thinner |
A solvent or chemical used to
assist in blending in the edge of a local or fade out repair. Often used
when blending Single Stage finishes. |
Blending Clear
Blendease |
| Fan Width |
The width if the wedge shaped
pattern made by the atomized paint when the spray gun trigger is pulled. |
|
| Fat Edge |
An accumulation of paint in the
form of a ridge at the edge of a painted surface. |
|
| Feather Edging |
Rubbing down the edge of an old
paint film around a damaged area with abrasive sandpaper to obtain a gradual
tapering. |
|
| Filler Primer / Primer Surfacer |
A sand-able primer with good
filling properties, which after sanding provides a smooth surface for the
subsequent application of finish coats. (Generally not designed for direct
to metal use unless the paint manufacturer specifically states that it has
corrosion resistance and is suitable for bare metal). |
Sand-able Primer
Blocking Primer |
| Flaking |
Lifting or the paint film from the
underlying surface in the form of flakes or scales. |
|
| Flash Off |
Allowing the greater part of the
more volatile solvents in a sprayed coat of paint to evaporate before
recoating or stoving. |
|
| Flash Point |
The temperature at which a liquid
begins to give off vapor which will ignite on the exposure to a flame or
other heat source. Regulations for the use, storage and transport of paints
and thinners may vary with the flash point. When this is below the limit
reached by atmospheric temperature in summer (generally around 90°) the
liquid is regarded as highly flammable and is called low flash. Liquids with
a flash point above this temperature are called high flash. |
|
| Flattening Agent |
A agent added to paint to change
the gloss level of the cured film. Also known as Flattener or Matting Base. |
Flattener
Matting Base |
| Flatting |
Sanding the surface of a paint or
varnish with a fine abrasive to produce a smooth level surface. Not to be
confused with Flattening Agent or Flattener. |
|
|
Flip Tone
Flop Tone
Side Tone |
This is connected with metallic,
pearl, and prism finishes and refers to the color effect obtained by looking
obliquely (45°) into the finish, as distinct from the effect obtained by
looking directly (90°) into the finish. |
Face Tone |
| Fisheyes |
A defect in which a wet paint
recedes from small areas on the surface leaving them either bare or with a
reduced film thickness. In appearance, resembles the eye of a fish. |
Cissing
Cratering |
| Floating |
Descriptive of non-uniform or
mottled color due to pigment separation when the paint film is still in the
liquid state. |
|
| Flow |
The ability of paint film to spread
out after application an produce a surface free from application
irregularities. |
|
| Fog |
Fine over-sprayed paint particles
suspended in the atmosphere causing a mist or fog. |
Overspray
Mist Coat |
| Force Drying |
Accelerating the drying process by
applying a moderate degree of heat. |
Low-bake |
| Full Coat |
The heaviest or thickest coat of
paint that can be applied in a single application, consistent with
satisfactory appearance, drying, etc.. |
|
| Gloss |
The degree to which a painted
surface possesses the property of reflecting light in a mirror-like manner. |
|
| Gloss Dieback |
A reduction in sharpness of the
reflection from a paint film. Most commonly caused by solvent trapped
somewhere in the paint film. |
|
| Gloss from the gun |
Gloss which is present in a dried
paint film after spraying and without polishing. |
|
| Green |
A coating is said to be "Green"
when it is not yet fully cured. It can also refer to a coating being
environmentally friendly. |
|
| Ground coat |
A coating used to give a good color
base for the color coat. Normally basecoat / clearcoat. |
3 Coat System
Tri-Coat System |
| Guide Coat |
A very thin coat (or mist coat) of
a contrasting color applied over primer surfacer or filler prior to rubbing
down. It is removed during the rubbing operation but as it disappears from
the higher spots and ridges first it serves as a guide to the operator in
producing a smooth level surface. |
|
| Hardener |
A co-product used with a second
component without which the paint will not form a satisfactory dry film. It
is always a cross-linking agent which becomes chemically an integral part of
the film. When used the film is said to be 2K. |
Activator
Catalyst |
| Hiding Power |
See Opacity |
Opacity
Coverage |
| High Bake |
A process of drying and hardening a
paint coating by heating to temperature in excess of 176° F up to 250° F for
a specified time, without which the paint film will not dry. This process is
also known as stoving. |
Drying
Force-Drying
Stoving |
| Holdout |
The ability or a coat of paint to
remain on the surface to which it has been applied without giving the
appearance of having been absorbed. Generally this deals with color. |
|
| Hue |
The attribute of color perception
denoted by blue, green, yellow, red, etc.... |
|
| HVLP |
Acronym which stands for High
Volume Low Pressure. HVLP sprayguns operate at a lower pressure than
conventional guns and give a better transfer efficiency of a coating. To be
HVLP compliant the spraygun must be at least 65% efficient and the air
pressure must exit the air cap at less than 10 PSI. |
|
| IR |
Infrared drying or curing
equipment. Uses light waves to cure refinish coatings. The light waves used
can be either short wave, medium wave, or long wave. |
|
| Isocyanate |
Isocyanates are the basis of most
2K refinish hardeners. Typically used in urethane and enamel coatings.
Isocyanates are hazardous in liquid and vapor form which can cause lung
sensation, leading to serious health defects or even death in extreme
allergic reactions. For this reason isocyanate activators should be used
with extreme caution with the proper use of lung, skin, and eye protection.
Isocyanate hardeners are moisture sensitive and should be stored in a clean
dry place. When isocyanates are fully cured they are completely inert
and pose no health risks. |
Polyisocyanate
Diisocyanate |
| Isolator |
A product which, when applied in
accordance with the manufacturer's instructions over an old paint system,
prevents topcoat solvents from penetrating through to the underlying
surface. |
Barrier Coat
Sealer Coat |
| Lacquer |
A term usually applied only to
coatings which dry solely by solvent evaporation which results in a
thermoplastic coating. |
|
| Lifting |
Failure caused by the swelling of a
dry coating when another coat is applied over it and usually manifested by a
wrinkled appearance. |
|
| Low Bake |
A process of drying or speeding the
dry time of a coating at temperatures of 104° - 176°. |
Stoving
High Bake |
| Metal Temperature |
Temperature measured on the surface
of the paint film to establish whether the panel has reached the correct
stoving temperature. Also know as panel temperature or surface temperature. |
|
| Metamerism |
Colors which match under one light
source but differ under another light source are said to be metameric to
each other. |
|
| Mica |
A natural occurring mineral based
on silica which after treatment is used as an effect pigment in coatings.
Their special property is that light falling on a mica particle depending on
the angle of illumination transmits the light with a change in color.
Because of this they are sometimes referred to as pearls. |
|
| Mist Coat |
A very thin coat applied by
spraying . In some cases it may form a fogged coat or non-continuous film.
Also used to refer to a thin coat of solvent sprayed over a dried lacquer
film to improve its smoothness and luster or in the case of spot repair to
blend the patch into the background. |
Fog |
| Mold Release Agent |
A coating applied to the surface of
a mold when making fiberglass or reinforced plastic bodies, panels, etc., to
prevent the laminate from sticking in the mold and thus facilitate removal. |
|
| Nitro-cellulose |
A term used to describe paints
based on industrial nitrocellulose or cellulose nitrate blended with
synthetic resin plasticisers to give the desired flexibility. Term generally
used with Lacquer. |
|
| Non Sanding Undercoat |
An undercoat which does not require
sanding before application of subsequent coats of topcoats. |
|
| Opacity |
The ability of a coat of paint to
obscure an underlying surface. Also known as hiding power. |
|
| Open |
A term to describe paint which has
not yet flashed off and may still be worked on. |
Flash Off |
| Orange Peel |
The irregular surface of a sprayed
paint film resembling the skin of an orange. The defect is due to the
failure of the film to flow out to a level surface. This can be caused by
improper gun setup, lack of air pressure, incorrect solvent selection, or
poor painter techniques. |
|
| Orbital Sander |
A powered hand tool with either a
circular disc or a block head to which abrasive paper is fixed, suitable for
sanding and featheredging operations. The random orbital style is
particularly effective for featheredging. |
Dual Action Sander
DA Sander |
| Overspray |
Sprayed paint which misses the
surface to be coated. Although often unavoidable, much can be done towards
reducing overspray by skillful manipulation of the spraygun trigger. Apart
from overspray being a waste of paint the effect can become a nuisance if
the overspray lands upon another surface already painted. |
|
| Panel Repair |
A term denoting the repair of a
complete panel as opposed to a touch-up or spot repair. |
Spot Repair |
| Panel Temperature |
See Metal Temperature |
|
| Pass |
The travel of the spraygun from one
edge of the surface being painted to another. |
|
| Pearlescent |
See Mica |
Mica |
| Peeling |
A defect whereby paint film man be
readily detached from the substrate in large stripes. |
|
| Phosphating |
The treatment of steel or certain
other metal surfaces by chemical solutions containing metal phosphates and
phosphoric acid as the main ingredients to form an adherent corrosion
inhibiting layer which serves as a good base for subsequent paint coats. |
Corrosion |
| Pigment |
The color matter in paint. A
pigment is different from dye in that a pigment is insoluble in the media in
which it is used. The contrary is true of dyes as used in textile
coloration. |
|
| Pinholing |
The presence of minute pinholes in
a dry coating or filler. |
|
| Polyester |
A name given putties, fillers,
primers, and paints made of unsaturated polyester resins dissolved in a
styrene monomer. They cure by the addition of peroxide and are used in a two
pack form. |
|
| Polyester Resin |
A condensation of product of a
polyhydric alcohol and an organic acid. |
|
| Polyurethane |
A reaction product of either alkyd
resin, polyester resin, or acrylic resin or acyrlic resin with isocyanate.
Most modern 2K Automotive refinish |
Isocyanates |
| Pot Life |
The period after mixing a 2K paint
product when the viscosity of the mixing has thickened to 2 times the
original viscosity when first mixed. Depending on the product, the mix may
or may not be sprayable once pot life has been reached. |
|
| Primer |
The first coating applied to an
unpainted surface. A primer protects the substrate and prepares it to accept
a surfacer or topcoat. It must have excellent adhesion to the substrate and
the coatings that follow. Bare metal primers must have corrosion protection
as well. |
Primer Sealer
Primer Surfacer Primer Filler |
| Primer Sealer |
Sometimes may mean the same as
Primer but often primer sealer is the coating applied after the primer
surfacer and just before the color coat is applied. This maximizes adhesion,
gives uniform color, and achieves a better gloss retention as opposed to
applying color directly to primer surfacer. |
Primer
Primer Surfacer |
|
Primer Surfacer
Primer Filler |
A pigmented coating which has both
priming and filling properties. It is generally sanded to provide a smooth
surface for subsequent topcoats. They can be available in both 1K and 2K
qualities. |
Primer |
| Reactive Reducer |
A dual purpose product which
reduces the viscosity to achieve sprayability and reacts with the coating
much like a hardener to cure the coating properly. |
Reducer |
| Reducer |
A volatile solvent added to a paint
product to bring it to the correct viscosity for application. |
Thinner
Solvent |
| Rusting |
Oxidation or corrosion of a metal
substrate. This occurs when bare metal is exposed to oxygen and moisture. |
|
| Sanding |
The process of rubbing an abrasive
paper to level a substrate or provide adequate roughness so that a coating
will adhere. |
Flatting
Blocking |
| Sand Scratch Swelling |
Coarse sanding marks that are seen
in a finish after a coating has been applied indicating that an abrasive
paper much too coarse was used in the blocking process and the solvents
introduced in the coating process caused the primer filler to reflow and
expose the coarse sand scratches. |
|
| Sealer |
A coating applied after the primer
surfacer and just before the color coat to maximizes adhesion, give uniform
color, and achieve a better gloss retention as opposed to applying color
directly to the primer surfacer. |
Primer Sealer |
| Self Lifting |
This is the lifting of a finish
still sensitive to solvents when re-coated. It often occurs with modern
synthetic finishes, acrylic enamels without hardeners added, and
nitro-cellulose lacquers when a newly or recently painted surface has
to be repaired during the period of the initial drying stage. |
Wrinkling |
| Settling |
The movement of solids in a coating
that falls to the bottom of the paint can. |
|
| Sheariness |
A variation in gloss, sheen or
color on a paint surface which should have been uniform in these respects
producing an uneven patchy appearance. When an uneven effect is produced by
polishing, this is referred to as polish sheariness. |
Cloudiness |
| Shelf Life |
The period for which a product may
be stored, in a factory sealed can, prior to use without deterioration. |
|
| Shrivelling |
Descriptive of irregular furrowed
patterns in the paint surface due to rapid surface drying while the
underneath remains soft. In severe cases the fault may appear as wrinkling. |
|
| Single Stage |
A topcoat paint which contains
pigment and resin giving the required gloss level and durability. |
Direct Gloss |
| Side Tone |
See Flip Tone |
Face Tone
Flop Tone |
| Skinning |
The formation of a skin or film on
the surface of the liquid paint. |
|
| Solid Color |
A coating which only contains
colored pigments and does not contain pigments such as prisms, aluminum
metallics, or mica pearls. |
|
| Solids Content |
The ingredients of a coating
composition which remain after drying to constitute the dry film. These are
essentially the pigment and solid resin. |
|
| Solvent |
A volatile solvent added to a paint
product to bring it to the correct viscosity for application or also may be
used for cleaning equipment used with the coating. |
Reducer
Thinner |
|
Spider Webbing
Hair Cracking |
Miniature cracks that form in
substrates such as traditional fiberglass that resembles a spider web or
fine hairs of the surface. These can often be seen in the topcoat but stem
from the substrate itself. |
|
|
Spot Repair
Spotting In |
Refinishing of small defective
areas in a coating. |
Panel Repair |
|
Spray Dust |
Particles of atomized paint
adhering to surfaces other than those painted due to overspray and bounce
back during spray application. |
Overspray
Bounce Back |
|
Staining |
Discoloration of the paint film
by a contaminant generally caustic in nature. |
|
|
Stoving |
The process of drying and
hardening a coating by heating panels to temperatures in excess of 140° F.
OEM coatings may be cured between 212° -248° F for a specified time, without
which the paint film will not dry properly. This process is also known as
High Bake. |
Drying
Baking
High Bake |
|
Striping |
Depth of shade variations showing
the strokes of the spraygun that were used during application. |
Tiger Striping |
| Stripping |
The process of removing a coating
from the substrate. This can be done by chemical or abrasive. |
|
|
Substrate |
The uncoated or unpainted
surface. |
|
|
Surfacer
Filler |
See Primer Surfacer / Primer
Filler. (Filler is also a term used to describe the polyester filler used in
the body work procedure.) |
Primer Surfacer
Primer Filler |
|
Tack Rag
Tac Rag |
Cotton fabric such as a
cheesecloth that is light lightly impregnated with a varnish possessing
delayed drying properties , used to remove dust from a surface after rubbing
down and prior to further painting. Tack Rags should be stored in an
airtight container to conserve their tackiness. |
|
|
Tape Marking |
The imprint caused by applying
masking tape on to a newly applied coating before it has had proper time to
harden. |
|
|
Thinner |
See Solvent and Reducer |
Solvent
Reducer |
| Tiger Striping |
See Striping |
|
|
Tinter |
Any color pigment or paint
mixture used to make small adjustments in color. |
Base Color |
|
Touch Up |
A localized repair usually
confined to the smallest area possible (for example, repairs due to rock
chip damage). |
|
|
Top Coat |
The final layers of a coating
system whose role is primarily decorative. However the topcoat often imparts
protection to ultra violet light present in the sun's rays. |
|
| Transfer Efficiency |
When a given volume of mixed paint
is placed in a spraygun and applied to a component, only a percentage of
that mixed paint reaches and stays on that component. This percentage is
referred to as the transfer efficiency of that particular application
process. |
|
| Tri Coat |
A term given to a finish that to
achieve the desired results must be applied with a base coat, a transparent
base coat (referred to as a mid coat), and a clear coat. |
Candy Coat |
|
Two Layer
Two Coat Metallic |
Alternative names for a metallic
base coat / clear coat finish. |
Base Clear |
|
Two Pack |
A coating supplied in two parts
which must be mixed together in the correct proportions before use. The
mixture will then remain usable for a limited time only. |
2K |
|
Viscosity |
The tendency of a liquid to
resist flow. A liquid of low viscosity will flow easily (i.e. water,
solvent, etc...), while high viscosity liquids are slow to pour because they
resist flow (i.e. syrup, high solid resins, etc...). Commonly viscosity is
measured as the time for a liquid to empty through the orifice at the base
of a standard viscosity cup (DIN4, Zahn, etc...) |
|
|
Viscosity Cup |
A device for measuring the
viscosity of a paint, whereby the time taken for the paint to flow through
an orifice with closely defined dimensions is a measure of viscosity. |
Viscosity |
|
VOC |
Volatile Organic Compounds:
Carbon based materials which tend to evaporate, such as organic solvents
present in coating to facilitate manufacture and application, which
evaporate during application and drying of the coating. |
|
|
Volatile |
A volatile liquid is one which
has a strong tendency to evaporate. |
|
|
Wash Primer |
A low film build etching primer.
Applied in approximately .2 mils of thickness. |
Etch Primer
Acid Etch |
|
Water Marking |
A disturbance of the surface of
the paint film caused by drops of water. It often takes the form of
irregular contour lines which may or may not be easily polished out. |
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Water Spotting |
The spotty appearance of a paint
film which is caused by drops of water on the surface and which remains
after the water has evaporated. Water spots usually appear lighter in color
than the surrounding paint. |
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Weathering |
The effect on a coating of
extended exposure to atmospheric elements including ultra violet light. |
Ageing |
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Wet On Wet |
A painting technique where
additional coats of coatings are applied before the previous coats have
dried. the composite film then dries as a whole. |
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Window Time |
A window of time in which a
coating can not be recoated with itself or any other coating. Doing so may
interrupt the drying process and cause the whole coating to wrinkle or
craze. (i.e. Most uncatalyzed enamels will have a window time after 3 hours
up to 5 days later). |
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Wrinkling |
See Crazing |
Crazing |
