UV light curing is the process of altering the properties of polymers, or photopolymers which refers to polymers that undergo changes to their molecular structure when exposed to light. UV light emits invisible electromagnetic radiation, causing a change in properties to photopolymers. UV light will cause a photopolymer, which are a wide variety of resins, to instantly dry, harden or seal with an unbreakable bond.
UV light is used in many curing processes worldwide by
industrial, commercial and government manufacturing and production companies to
improve their process. By exposing their manufactured polymer products to
UV radiation, they can instantly dry ink on parts and strengthen surfaces
without using harmful chemicals or solvents. Some examples of processes
that benefit from UV curing include:
- Instantly
drying of inks, lacquers and varnishes
- Creating
an improved adhesive bond
- Enhancing
decorative glazes
- Drying
outer surface coatings
- Improving
graphic designs
- Screen
printing
- Disinfecting
of surfaces, air, and water
- Disinfecting
medical equipment
This is only a short list of the multitude of benefits
realized by UV curing. As more and more businesses realize the many
benefits of curing with UV radiation, there will continue to be an increase in
companies adopting this superior curing method in their processes.
Types of UV Light Curing Lamps
The three basic types of lamps used in UV curing processes
are:
- Low-Pressure
Amalgam Lamps
- Medium-pressure
UV (MPUV) Lamps
- High-Pressure
UV (HPUV) Lamps
Low pressure amalgam lamps are typically used for polymer
curing, although they can also be highly effective in germicidalapplications. Medium Pressure lamps are effective in germicidal
applications and are typically used for air, water,
and surface disinfection, while high pressure lamps are typically used to alter
the properties of photopolymers in many UV curing processes.
Benefits of UV Light Curing
There are a multitude of benefits to using UV lights for
curing, some of the most important would be efficiency, consistency and safety.
Efficiency
There is no other method that is quite as efficient at
curing products as using UV light. Depending on your operation, you could
utilize specific UV light curing machines for your process or use more of a
conveyor type of UV curing station to instantly treat numerous parts, without
even touching them. Imagine the time, money and labor you save by having
an instant curing process occurring simply while your parts are being
transported from one station to another such as quality inspection or shipping.
The alternative methods such as drying or using solvents are less desirable due
to several factors. Force drying or air-drying products leaves them
susceptible to inconsistencies with evaporation and possible contamination, and
takes more time than an instant UV cure. In manufacturing, time is money,
and anytime you can improve your cycle time with a higher level of quality, it
is evident which method is preferred. UV light curing dramatically
improves throughput and cycle times, with less costs than additional labor and
purchasing chemicals which could be harmful to employees and the environment.
Consistency
Consistency is key to producing high quality products.
UV curing produces a consistent process with an even amount of UV
exposure applied to parts and products, whereas employees applying a chemical
spray for an outer coating can produce inconsistencies in the finished
product. Allowing parts to air dry also leaves room for an inconsistent
finished surface due to evaporation. As all quality minded OEM’s are
aware, consistency increases the quality of products in all processes.
Safety and Health of Employees
While efficiency and consistency are top considerations for
any production process, the safety and health of your workforce is also a top
consideration. With UV curing there is no emission of harmful pollutants
and chemicals in the air, and no need to purchase or store hazardous materials
and maintain material safety data sheets on such materials. Using
ultraviolet radiation is effective on photopolymers, and safe to the
environment and your workforce. With all
these benefits, it is no wonder that OEMs, quality and production managers are
realizing the value of ultraviolet radiation to enhance their production
processes. Cost efficient and consistent processes dramatically increase
throughput and profitability. Combined with health and safety practices
UV curing is the most desirable of processes used to cure product surfaces.
LightSources Leads the Industry in UV Light Curing Lamps
LightSources and our European partner, LightTech, lead the
industry with high quality UVlamps and customdesigned solutions. As an ISO registered lighting specialist, we
understand the importance of high-quality product, delivered on time.
LightSources goes above and beyond any other lighting supplier with
knowledgeable engineers ready to provide custom designs and prototypes with the
right lamp for your process. We can develop lighting solutions to be
installed vertically or horizontally, while maintaining effectiveness.
Our lamps are proven to maintain effectiveness longer than other comparable types.
LightSources and our valued partner companies represent
the leading high-tech lighting specialists and lamp designers in the industry
today. Our products are used in a multitude of industries and
applications worldwide. We offer OEM oriented and patent protected
lighting solutions. We invite you to contact us to learn more about our
wide selection of UV light curing lamps.
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