什么是紫外线?

UV是波长为100至380nm的电磁波,长于X射线,但比可见光线短。
UV根据其波长分为以下三种类别:
UV-A(315-380nm)
UV-B(280-315nm)
UV-C(100-280nm)

当使用UV固化树脂时,使用以下单元来测量UV辐射的量:

– 照射强度(mW / cm2)
单位面积照射强度
– 紫外曝光(mJ / cm2)
单位面积的辐照能量和到达地表的光子总量。照射强度和时间的产物。

– UV暴露和照射强度之间的关系
E = I×T
E = UV曝光(mJ / cm 2)
I =强度(mW / cm 2)
T =照射时间(s)
由于固化所需的UV曝光取决于材料,如果知道UV照射强度,可以通过使用上式来获得所需的照射时间。

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What is UV?

UV is an electromagnetic wave of 100 to 380nm wavelength, longer than that of X-rays but shorter than that of visible rays.
UV is classified into three categories shown below according to its wavelength:
UV-A (315-380nm)
UV-B (280-315nm)
UV-C (100-280nm)

When UV is used to cure the resin, the following units are used to measure the amount of UV radiation:

– Irradiation intensity (mW/cm2)
Irradiation intensity per unit area
– UV exposure (mJ/ cm2)
Irradiation energy per unit area and total quantity of photons to reach the surface. Product of irradiation intensity and time.

– Relationship between UV exposure and irradiation intensity
E=I x T
E=UV exposure (mJ/cm2)
I =Intensity (mW/cm2)
T=Irradiation time (s)
Since UV exposure required for curing depends on the material, the required irradiation time can be obtained by using the above formula if you know the UV irradiation intensity.

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What is UV Curing Technology?

UV Curing Technology is a technology of instant curing or drying in seconds in which ultraviolet is applied to resins such as coatings, adhesives, marking ink and photo-resists, etc., to cause photopolymerization. With polymerization reaction methods by heat-drying or mixing two liquids, it usually takes between a few seconds to several hours to dry a resin.

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UV Curable Scratch Resistant Coatings

Specific grades of Master Bond’s UV curable adhesives feature scratch resistant properties.

Source: UV Curable Scratch Resistant Coatings

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How UV-LED Inkjet Technology is Increasing Profits for Flexographic Printers – Part 2

By Roland DGA  UV Printers in Action To get a feel for how UV technology is revolutionizing pre-press and proofing, it helps to take a look at some real-world examples.  These companies are currently putting advanced UV-LED printers to work … Continue reading →

Source: How UV-LED Inkjet Technology is Increasing Profits for Flexographic Printers – Part 2

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3 Tips to Prevent UV Ink Spitting

by Doug Jones, Apex International UV inks are considered by many to be the most popular in the narrow-web space.  And for good reason.  Print results with UV inks are consistently better than those using water or solvent-based inks.  But … Continue reading →

Source: 3 Tips to Prevent UV Ink Spitting

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How UV-LED Inkjet Technology is Increasing Profits for Flexographic Printers – Part 1

By Roland DGA Having the ability to quickly create a realistic package prototype that impresses a potential client with its detail and accuracy can make all the difference in the world when it comes to winning business in today’s competitive … Continue reading →

Source: How UV-LED Inkjet Technology is Increasing Profits for Flexographic Printers – Part 1

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Hello Speedy, what you can do for our LED ink?

27586b59cb-speedy2

SpeedyTM LED Ink Testing System

                              DPL Part No. 80870. 

LED curing technology offers many benefits over traditional Mercury UV curing, such as lower operating costs and No stand by time and No ozone exhaust risks, the only problem for LED curing is wavelength. Compared with mercury UV curing, LED curing system will provide much more energy at single wavelength, such as 365nm,395nm, but Mercury UV curing system provide a “curing area” from UVB to UVA, which is more suitable for current ink system. So it become more important to our clients test their LED ink before they decide to invest LED curing system for their printing or coating machine.

DPL SpeedyTM LED Ink testing system is specially designed for high speed LED ink test, speed from 2-300m/min.

 

Specification

LED Curing Area: 82x60mm or up to client’s request

Peak Wavelength: combination 365-385-395-410nm

Peak Energy Output: up to 26w/cm2

Speed control: automatic, from 2-300m/min

Control System: Integrated PLC

Power Control Range: 0-100% with instant on-off

Cooling System: closed loop water chilling with automatic flow control

Certifications: CE,UL…

 

 

 

              DPL Industri A/S 01.11.2016

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