With the development of the times,
the green production requirements
have become an inevitable trend.
With the increasing popularity of UV
curing technology in the printing
industry, the uvled light source curing
has developed.This is a printing method
using UVLED light-emitting diodes as a
curing light source, which has also attracted
more andmore attention from printing
companies.The use of UVLED light source
energy is highly concentrated, low thermal energy,
and irradiation is more uniform, which can reduce
printing waste and reduce printing cost, thereby
saving printing enterprise production time and greatly
improving enterprise production efficiency.
The advantages of using uvled curing technology
in printing are as follows.
1. Save energy
For traditional UV printing, the lighting
system should be pre-heated before
the official printing. The stronger the
light power is, the longer the waiting time
will be.In order not to delay the printing
period and maintain the service life of the
UV lamp, some printing companies often
choose not to turn off the illumination system
to keep it in the illumination state,
resulting in a large waste of light source.
The UVLED light source converts
the electric energy into light energy
instantaneously according to its own
structural characteristics, and can be
started at a low voltage, so that the
maximum power output can be achieved
without the warm-up time. More
than 80% of the source energy in the curing
source is used for the curing of the ink.
At the same time, the brightness of the
light is low and the heat is small. The low
light intensity can achieve the same curing
effect of the traditional UV light source,
which can reduce the power consumption
by 70% to 80%. High energy efficiency.
It can be turned off when not needed,
further reducing energy consumption
2. More appropriate
The traditional UV light source has a large
heat generation and the printing material
is susceptible to heat deformation.
The UVLED is a cold light source that
emits a single wavelength, does not
contain infrared light, has no heat radiation,
and does not generate too much heat.
Therefore, the use of a UVLED light source
can significantly reduce the heat generated
during the curing process without damaging
the appearance of the substrate.
For example, heat-sensitive film-based substrates
that cannot be well-printed
in conventional UV equipment can be
printed well using UVLED printing.
Nowadays, the label printing is developing
rapidly, the printing speed is getting faster
and faster, and the substrate is getting thinner
and thinner.If the heat is too high, the substrate
will react to cause wrinkles when it is hot,
which will affect the quality of the product.
The use of UVLED printing can
greatly reduce the defect rate of the product
and ensure the quality and quantity of the
task can be completed during the printing period.
3. Long life
The traditional UV light source will be
replaced after about 1500 hours
of operation, and frequent replacement of
the light source parts may cause
the printing machine to fail frequently.
At the same time, it may also reduce
the printing machine operation efficiency
and affect the normal production
of the printing enterprise. The service life
of the UVLED light source can
generally reach more than 12 times that
of the conventional UV light source,
and can reach 20,000 hours, and is not
affected by the number of switches.
According to the principle of light
emission, the UVLED light source can
only be energized in one direction, and
is forward biased. When the current
passes, electrons and holes recombine in
it to emit light, ensuring the stability
of the light source and making the light
source decay rate small a lot of.
4. Protect the environment
The market share of UV printing in the
printing industry is now increasing
dramatically. Some printing companies
are also using high-pressure mercury
lamps as their UV curing light source.
After the printing plant is used, it takes
manpower and financial resources
to dispose of the mercury it emits.
If the treatment is not timely, it
will penetrate into the surrounding
environment and cause harm to
the surrounding environment and
human health. The UV LED
illumination system is free of harmful
chemical elements such as
mercury, and does not cause any
pollution to the environment