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Introduction: Temporary UV curable Masking Resins, UV
Curable Peelable Coatings, Light Curing
Temporary protective Maskants |
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UV Light curing material UV_PeelMask from General
Chemical offers tremendous benefits to thousand of
companies worldwide to assemble and protect their
parts. Some of this industries are Aerospace,
Appliance, Automotive, Electronics, General
Industrial, Medical Equipment, optical, Telecom and
others. |
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UV_PeelMask |
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Today a number of masking technologies are
commercially available for temporary of various
products in automotive, construction, appliance,
printing, packaging and other industries. Wood,
Metal Sheets, baked topcoat, screen printing
products, lithography and many others are typical
materials when need protection from scratching,
chipping, solvents, weather damage, storage,
transportation, machining drilling, acid stripping,
plating and etc. These |
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| The widely used traditional masking products
in today's masking( temporary protection)
application include laguers, tapes, waxes
and reusable boots and plugs. These masking
products are not generally expensive but
masking process itself can significantly
increase cost to product protection
operations. The longer it takes to apply and
remove these traditional masking materials,
the higher the cost of masking processes can
be expected. Labor is major contributing
factor to cost other hidden costs are also
associated with using these traditional
surface protection materials. To overcome
these backdraws, General Chemical Corp. has
developed new UV curable temporary masking
products as a solution. |
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| 1. |
Can it be
applied over UV finishes. Yes providing
the finishes are fully cross linked. |
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Product
Specifications – |
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Pot Life – Minimum 6 months
providing product kept in
darkness. Our UV coatings are
one package coatings. |
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Viscosity – 40-60 seconds on
zaku cup #3 |
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Application in roll coaters –
May be suitable at this
viscosity however we can
increase viscosity if necessary
to accommodate. |
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Energy
Required for curing : our laboratory
testing is done suing : |
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Wave spectrum – 200 - 400
nanometer wavelengths
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Power
requirements and line speed –
300 watt mercury bulb at 25 feet
per minute. |
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Cost per square foot - per
square foot based on 5 mil
application. |
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Thicknesses that can be applied and
the requirements for cure – 5 mils
for optimum peelability. |
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Chemical
Toxicity (MSDS) – 100% non-volatile |
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Adherence (tack) level to other
coatings. Dependant upon coating or
substrate. We formulate for various
applications. |
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Viability in extreme conditions
(sub-zero to 120? F conditions with
humidity) – No problem. |
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Supply Availability: local
distribution and volume needs. We
manufacture and distribute directly
from our plant in Detroit, MI. We
can accommodate volumes of quart and
gallon trial size, 5 gallon pails,
55 gallon drums, and 275 gallon
totes. |
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The growth in Ultraviolet (UV) curing in the
past 10 years has been phenomenal and as a
result has become an established industrial
process. UV-curable masking originated and
commercialized in the 1980's, resulting in
millions of dollar cost saving.
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The Principle of UV Curing and Advantages of
UV Curable Peelable Coatings
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In UV curing, a reactive, low viscosity and
usually solvent free coating is material is
applied to the substrate and then made to
polymerize by exposure to UV-light. UV
curable Peelable coatings are one component
systems which typically consist of:
oligometric acrylates, acrylic monomers,
reactive diluents, photoinitator, additives
and modifiers. The main types of acrylic
oligomer used are: epoxy acrylates,
polyester acrylates and polyurethane
acrylates. These oligomer provide basic
properties to the resulting coating.
Photoinitiators are very important component
of coating composition. The role of
photoinitiator is to begin the
polymerization (curing) process when coating
composition is exposed to UV light with
certain energy (wavelength.) Various
additives can be used to enhance coating
properties such as wetting, surface
leveling, flow rate, color etc. Modifiers
can increase durability( impact&crack
resistance) of the UV Peelable coatings.
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Through careful raw material selection, UV
cure coatings formulators can more easily
manipulate physical properties, such as
chemical and weather resistance as well as
mechanical properties, such as tensile
strength and elongation. Controlling these
properties enables formulator to create
customized Peelable coatings that meet
specific performance criteria for each
applications. In addition to performance
benefits, UV- curable Peelable coatings
provides processing advantages over
traditional solvent borne and water based
technologies. First because these UV curable
coatings contain no solvents, volatile
organic compound (VOC) emissions are in
compliance with EPA regulations. UV curable,
Peelable coatings also cure( air dry) much
faster than solvent borne/water borne
counterparts. In fact the curing only takes
a few seconds, makes UV curable coatings a
particularly economic by speeding production
masking times and increase profitability.
The properties of UV cured Peelable coatings
are far superior to those of other systems.
The UV curing mechanism involves chemical
reactions of polymerization. Di-functional
and poly functional compounds in formulation
cross linking of cured films. Advantages of
UV curable masking coatings over
conventional making products can be
summarized in the following chart of
advantages:
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| Superior Film
Properties (thermosetting, mechanical,
chemical) |
| Good Cost/
Performance |
| Much Faster
Cure (take seconds to cure) |
| Significantly
shorter application (masking) time and
significantly increased production
cycles |
| Worker and
environmentally friendly- no solvents
and little to no VOC emition. |
| Minimal
Capital Investment |
| Space saving
installations |
| Dispensing
can be automated |
| Coating may
be applied by dipping, spraying, screen
printing or pad printing |
| Little heat
applied to substrate |
| Curing is not
dependant on temperature/humidity
condition of environment |
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Application: |
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How
Do UV_PeelMask Work?
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The UV light curing process begins when the
photo initiator in the mask is exposed to a
UV light energy source of the proper
spectral output. Its molecules split into
free radicals (initiation). Which then
begins to form polymer chains with
ingredients (Also known as propagation).
This continues until all of the ingredients
have formed a solid polymer (termination).
What was once a liquid, is now a solid
Peelalbe resin film.
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All of the components in the UV curable
system react and form the polymer coating
network. Therefore 100 percent of the
applied coating remains on the substrate
once the coating is cured. No VOCs are
emitted after cure and the coating is termed
environmetnally friendly.
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| Patch Test: |
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| Because it is difficult to determine the
type and condition of the surface, perform a
small patch test first. It will determine
the peel ability of the coating on your
particular surface, it will define the
coverage and the approximate amount of time
required for it to work and to remove off of
surface. We offer no implied or other wise a
warranty for our products. |
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| UV_PeelMask masking resins are a line of
light curable temporary protection used in
surface preparation and finishing operations
where a barrier is needed to protect
surfaces and cavities. These masking resins
offer reliable protection during the
following processes. UV_PeelMask is far
superior to traditional masking process. We
will custom engineer a solution to meet your
process requirements. |
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Process/Industry |
UV_PeelMask
Features |
Acid
Stripping |
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Airflow
Testing |
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Anodizing |
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Chemical
Milling |
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General
Masking |
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Grit
Blasting |
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Machining |
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Painting &
Powder Coating |
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Shot
Preening |
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Vibrato
Finishing |
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Curing: |
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COMPONENTS OF UV CURING SYSTEMS
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UV light is part of the electro-magnetic
spectrum and is generally between 200 and
400 nanometer wavelengths. The ultraviolet
lamp bulb is the source of UV light and it
is a very important component of UV curing
system. The role of UV light with sufficient
energy is to initiate a polymerization of
photo reactive components (oligomers and
monomers) of coating in presence of photo
initiator. Industrial UV lamps produce
energy across the full spectral range of the
optical region. Several types of UV light
bulbs with output intensities as high as 120
watts/centimeter (600 watts/ inch) are
available. Type and intensity if the UV
bulbs, component configuration, production
capacity, the mature of the processes and
the shape of the substrates and costs are
major factors which play role in selection
of appropriate UV curing system. All
reputable suppliers of ultraviolet light
radiant energy equipment rely on some basic
components such as:
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| The light
source (typically a tubular glass bulb) |
| A power
supply to energize the bulb |
| Shutter
system to prevent light from hitting a
target |
| Cooling
system to remove heat from the lamp area |
| Reflector
systems to focus or diffuse the light |
| Safety
shielding to prevent UV-light being
emitted into the workplace and protect
operators |
| System to
transport a coated parts- a conveyor
system |
All well designed UV light sources
are houses in units which prevent UV
light from reaching the workplace
and preventing possible problems of
eye exposure to the UV light. |
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Advantages of UV Curing 100% reactive solids
(no solvent)
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| No decrease in thickness |
| High chemical resistance |
| Rapid cure (processing rate ~ 2 m/s) |
| Low temperature (T<50?C) |
| Low energy consumption |
| Reduced process area and equipment |
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Products |
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Temporary UV curable Masking Resins, UV
Curable Peelable Coatings, Light Curing
Temporary protective Maskants |
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UV_PeelMask_8950-UV curable Temporary
protective Peelable coating. Temporary
protections for surfaces of wooden
objects and products. Cured coating is
durable, clear, water and solvent
resistant, flexible and hard film.
Appearance: 100% solid clear
and odorless liquid mixture
Application : Brush,
Spray, Roller, Dipping
Substrates: Non porous
wooden surfaces
Curing Conditions: Films
cure using 300 watt per inch mercury
lamp at 20 feet per minute
Weight per gallon: 8.97-9.17 lbs./gal
Viscosity: 40-60 seconds
on Zaku #3 cup |
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WoodPeel_4820UV UV curable Peelable
coating specially designed for temporary
protection of non-porus wood surfaces.
Color: Blue
Application : Brush,
Spray, Roller, Dipping
Substrates: Non porous
wooden surfaces
Curing Conditions: Films
cure using 300 watt per inch mercury
lamp at 20 feet per minute
Weight per gallon: 8.97-9.17 lbs./gal
Viscosity: 40-60 seconds
on Zaku #3 cup
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UV Screen Mask 1390 UV Curable Peelable
coating specially designed for making
temporary protective coatings using
printing screens.
Appearance: 100% solid (no
solvents), clear liquid
Application : Through
printing screens
Curing Conditions: Films
cure using 300 watt per inch mercury
lamp at 20 feet per minute
Weight per gallon: 8.97-9.17 lbs./gal
Viscosity: 40-60 seconds
on Zaku #3 cup
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UV Peel Mask 1400 UV Curable Peelable
coating specially designed for temporary
protection of baked enamels, metal
surfaces and glass.
Appearance: 100% solid clear
liquid
Application : Brush,
Spray, Roller, Dipping
Substrates: Non porus
baked enamels, metals and glass
Curing Conditions: Films
cure using 300 watt per inch mercury
lamp at 20 feet per minute
Weight per gallon: 8.97-9.17 lbs./gal
Viscosity: 40-60 seconds
on Zaku #3 cup
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UV Peel Mask 8000 UV Curable Peelable
coating specially designed for temporary
protection of automobile surfaces and
top coated metals.
Appearance: 100% solid clear
and odorless liquid mixture
Application : Brush, Spray and
Roll
Substrates: Non porous painted
(coated) and non painted metal surfaces.
Curing Conditions: Films cure
using 300 watt per inch mercury lamp at
20 feet per minute. Cured coating is is hard, durable,
flexible and film resistant to water and
solvent.
Weight per gallon: 8.97-9.17
lbs./gal
Viscosity: 40-60 seconds on Zaku
#3 cup
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Removal: |
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| UV_PeelMask masking resins are available in
burn-off, peelable, and water soluble
grades. The resins are easily removed and
leave the surface residue free.
Probably most widely used UV cured
protective coating is Peelable type coating.
UV curing
which cure in a few seconds provide durable
and cross-linked films with sufficient
adhesion for surface protection objects
during handling, storage, transportation,
and in manufacturing operations such as
machining, acid stripping, solvent cleaning
etc. UV curable Peelable coatings are easily
removed manually or help of non abrasive
tool. Typically removal of coatings starters
by lifting up of edge and than peeling of
complete coating in one piece rather than in
fragments. The peeled coating is basically
cross linked plastic and non hazardous film
which can be disposed of according to local
regulations for waste plastic materials.
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Coverage :
UV cure peelable
coatings are applied at between 5mils to 15
mils. More common would be between 5 mils and 10
mils. At 5 mils the coverage area is 12,200
square inch/ liter (84.7 square ft./liter) or
46,177 square inches/gallon (320.6 square
ft./gallon). At 10 mils the coverage area is
6,100 square inches/liter ( 42.4 square
ft./liter) or 23,088.5 square inches/gallon
(160.5 square ft./gallon).
ESTIMATING USAGE :
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Thickness of the Bond Line Gap
or Coating |
Theoretical Area Covered by
1 Liter of Coating |
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0.002" (51 μm) |
30,500 in2 (212 ft2)
(19.7 m2) |
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0.005" (127 μm) |
12,200 in2 (84.7 ft2)
(7.88 m2) |
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0.010" (254 μm) |
6,100 in2 (42.4 ft2)
(3.94 m2) |
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0.015" (381 μm) |
4,070 in2 (28.3 ft2)
(2.63 m2) |
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Storage: |
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It is recommended that temperatures of 13
degrees C - 32 degrees C (55 degrees F- 90
degrees F) should be used within one year of
purchase. should be stored in the original
shipping container in indoor environment.
Containers should be sealed until needed.
Protection from freezing is necessary.
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Physical
Characteristics: |
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Color: Clear
Weight: 8.5 lbs/gallon
Viscosity: sprayable
Flashpoint: Noneany residues. |
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 Good
Day,I have an application which requires
accurately painting stripes around the
inside of a glass cup that is a little
bigger than a shot glass. Suppose I was to
apply one of your UV curable masking
products to the inside of the cup, place the
cup into an opaque "stencil" shutter, then
expose it to UV. Would the shaded areas
remain uncured? If so, could the uncured
product be "washed" away, leaving the cured
areas as a paint mask?
2. We are
situated in the Netherlands and Germany and
specialized in hanging equipments and masking
solutions for all types off surface treatments (powdercoating,
anodizing, etc. etc.) There is a customer who asked
for solvent-free , temporary Mask in there process
of anodizing, chromating, opalizing.
They did test the last years several liquid masks,
strippable after the process, but not solvent free.
May be your company can help us with a product that
is in your program? |
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| Temporary
UV curable Masking Resins, UV Curable
Peelable Coatings, Light Curing
Temporary protective Maskants
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General Chemical Corp.
12336 Emerson Dr.
Brighton, Michigan(MI.)
48116, USA |
| USA: |
866-623-5600 |
| Overseas: |
248-587-5600 |
| Fax : |
248-587-5606 |
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