Application Table of UV led strip：

Disinfection of the Article Surface – UV led strip

◆The irradiation way: the best use of portable ultraviolet led strip close to the Article Surface .
UV light can also take suspensory exposure. small items can be put inside the irradiation of ultraviolet disinfection.. Use generally ultraviolet decontaminating to put ultraviolet light source suit into water. Also can use Disinfection box in Small items .

◆irradiation time: there a difference of microbial sensitivity , with ultraviolet disinfection have to with standards format of kill microbes .

◆for water and other liquids of disinfection, using water irradiation way, We must be careful of the water layer thickness should be less than 2cm,, Flow velocity of water is determined according to the intensity of the UV light source. After disinfection water must meet the state standards.
Note:

(1) when the surface of the article with ultraviolet disinfection should be made by exposure to ultraviolet irradiation direct, and should reach An adequate level of  intensity illumination
(2) No one shall be subjected to with ultraviolet and shall not be allowed to cause damage.

(3) UV intensity meter calibrated at least once a year.

(4) in the use of the process, should maintain the UV lamp surface cleaning,  prepared to cleansing..

(5) indoor air disinfection with UV lamp. indoor air.  should be kept clean and dry, reducing dust and mist, the temperature is below 20 or above 40。

Tests to show whether UV ink have been curing with UV led strip

A.  use color, tinting strength, fineness, fluidity and viscosity of the test method to get started .

test methods are the same lithographic ink.

B Impact resistance test methods and test methods of Printing Ink same.

C. There are two methods for the adhesion testing

① The draw circle test method is same with the printing ink.

② Using a metal tip (tip) marked “X” shape in the ink film, then use cellophane tape attached to the notch, and pull, check the ink film will be pulled away from the metal matrix.

If the ink film all scored basically is pulled off, It is poor adhesion. the if a small amount of ink film is pulled off,it was generally acceptable; if only a very small ink film is pulled off, it can as well; if the ink film that did not come off, it can be rated as excellent.

LEDlight company which specialises in UV LED STRIP  in a decade

Curing principles and advantages and disadvantages of Ultraviolet (UV LED)

Ultraviolet (UVLED) curing principle:

UV light curing system is divided into the radical system and the cationic systems, different systems have different curing mechanism.The radical come into being new radical by the light irradiation, causing the monomers and prepolymer polymerization crosslinking reaction can achieve the effect of curing .after polymerization Eventually, it reaches a stable state of curing.
Ultraviolet (uvled) curing advantages:

1, excellent performance, wear resistance, solvent resistance, to fight against high intensity;

Ultraviolet (UVLED) curing advantages:

1, excellent performance, wear resistance, solvent resistance, fight, high strength;
2, using a single set of system do not mix, making use of convenience;
3, can be an instant cure, save a lot of time ,can improve the production efficiency ,it is conducive to automated production lines;

4, curing temperature requirements are low, thereby saving energy,
low curing temperature requirements, thus saving energy, more suited to the high temperature curing material, curing worked far better(Curing degree is also high) compared to heat curing(energy consumption.),
5, environmental health, without the use of solvents, does not produce volatile gases, environmental pollution, no harm to the human body.

UV (uv led) curing disadvantages:
1, penetration of UV curing is weak. So curing depth is limited, opaque parts and blind side, theuv light will be unable to shine, curing is not easy;
2, electronic curing equipment investment is relatively large, the price of UV curing coatings is relatively high, but these can be could be compensated from the energy compensation.

Main influence of UV led performance

Violet (UV) curing is a chemical reaction, the uv led significantly affect the morphology of molecular. violet (UV) curing process need to accept the violet (UV) light, so we must consider that the violet emission (UV) light source possessing special function. we can be considered from four points, the amount of radiation, radiation the infrared radiation and ultraviolet (UV) spectral distribution also are to determine their performance.

1, violet (UV) radiation amounts refers to the UV light  At a point on a surface from UV radiation amounts. It is confused with (UV) radiation degree. The only real difference in the (UV) radiation amounts that one is the expression of energy. The (UV) radiation degree is the expression of rates .

2, violet (UV) radiation amounts also refers to the size of the power unit area irradiate, symbol is usually expressed as a per square centimeter of Watt. The magnitude of the radiation is also affected by the output power, and focusing, and so on. — ultraviolet (UV) irradiation was the strongest in direct impact  On the other hand, violet (UV) radiation have a great relationship with curable material,

3, spectral distribution is described as a function of the emission wavelength of the LED.It is commonly used to express a relevant standard term. General high efficiency ultraviolet long wavelength UV violet (UV) is mainly used for ink curing, violet (UV) light oil curing. so has more efficiency and can be used on the violet (UV) ink curing, violet (UV) curable varnish.

ultraviolet light LED in communication technology

UV LED communication were used to wavelength as 200nm~280nm  (the band as short wave ultraviolet (UVC))to work .the Structure of wireless communication systems and radio systems UV is same . coding encoder waiting to send out, the signal would need loaded into the modulator,, the modulator’s excitation current changes with the signal changes, after that modulated data is send out by laser, as the corresponding laws values varying. Finally, the packets are convertedsmall angle light beam has sent into space.

Positive and negative discrimination of ir led ic

Ir LED lamps IC in the welding process, our need to recognize that how to identify the positive and negative of ir led ic, this is particularly important,

The most commonly used method is the use the multimeter to measure. The use of “R * l0k” grades . Because the pressure drop of the ir led is about 3V.The pressure drop of multimeter’battery is 1.5V when we use “R×lk” to measure. Below the tube pressure drop of the ir led. Both positive and reverse access, the ir light-emitting led can not lead, in here the multimeter cannot take be detected work. “R * 1K” grades inscribed with 9V (or 15V) high voltage battery, is higher than the ir led’voltage drop, so it can be used to detect the ir light emitting led. During the detection,the multimeter linked it to the tow-side of ir led ic such as pointer spin to half of multimeter’panle. It is forward access, this time with the black pen (with the inner battery positive terminal) is in contact with the positive electrode; and red pen (with tables inside the battery negative terminal) is in contact with the ir led ic.  then inverted access with pan. The point should not move.
If either positive or reverse access with check’pan, the point of Instructions are not moving or at the end of the deflection of indicator panel, the Infrared led ic has been damaged.

UV wavelengths, refers to the light emitted by the UV light source, a definition of light, can be understood as a distance per unit time, , and different wavelengths have different effects on the curing.

Uses of different wavelengths:

In UV curing technology, UV light emission has two wavelengths at the same time for curing work. Because the wavelength is different length, the effect is not the same. The Long wave has strong penetrating power can used for ink or coating, the short wave is used in the surface of ink, which is because the short wave uv led strip has a high energy, but the penetration is not strong for the ink.

Wavelength applications:

The short wave uv led strip will be absorbed in the surface of ink. Because both shortwave and longwave length of each has different effect, but regardless of which a separate application is not able to achieve the desired results, for example,
long-wave’energy is low, it cause poor adhesion, other side because of the short exposure less and make hair stick surface, so it is best The approach is both operation, has reached perfect results, according to different formulations of the film with different energy UV light.

Violet (UV) light curing led strip application in label printing project

Ultraviolet (UV) light curing technology don’t need heat source, belongs to pure  Violet (UV) light LED curing, suitable for production of heat-sensitive labels; and fast curing (curing time can be less than 1 second),  high productivity and high process yield can reduce the storage of raw materials and finished products; violet (UV) light curing technology system solvent free system, 100% free solvent formula, suitable for the production of special labels and no VOC (volatile organic compounds), fully meet the requirements of environmental pollution and regulations. It is believed that technology will become the firstr choice for more and mo e label manufacturers in future.

There are so many different wavelengths of Infrared led included 880nm, 940nm, 850nm, However, this time, select only the 940nm matching Receiving head.

There are two main reasons for this:One of the main reasons for the ir led in prices  Price of ir led 940nm is cheap, In this sense, price competition is the main manner. among them, the 850 most expensive, 880 times, 940 of the most expensive.

On the other hand,Let’s look at general insights that can be drawn from analyzing these profiles（transmitting power）.as before 850nm was the most powerful,840nm is number two,940nm in weakest.Some people deem that To increase the distance of the infrared transmitted  which should be considered 850nm, if only from the perspective of the transmitter, it is the right, But, however, ONE thing must be considered the receiver, Another thing is that Transmission distance and power are positively. Through the above analysis, and finally have a renewed understanding on the ir led strip.