The Study of UV Painting Formulation

1.The limitations of photo-initiators, thinking in terms of system, resins, monomers

From the introduction of LED, it can be seen that the current high power LED light source suitable for industrial production is limited to the UVA band and mainly covers the band above 365nm. After determining the capability boundary of LED light source, looking back on initiator, the range of choice is actually very limited. Most initiators have very low molar extinction coefficient in the band above 365nm. In order to solve the problem of low initiator efficiency of LED light initiator, in addition to the development of initiator itself, we should also think from the perspective of the system, including resin, monomer and initiator, and even auxiliary additives, into a whole to study, improve the curing efficiency of Safety NICHIA Ultraviolet LED Lights for UV Flashlight.

2.To achieve UV LED curing coating formula and coating process design (initiator, resin, monomer, temperature, surface drying, drying, pigment, filler)

In order to improve the absorption of long wavelength ultraviolet light by the initiator, benzene ring, N, P and other atoms are often added into the molecular structure to improve the absorption of long wavelength ultraviolet light by the initiator, which also brings about color deepening. And because of the initiator absorption efficiency is too low, in order to improve the overall reaction speed of the coating, need to add a large number of high reactivity of resin and monomer, generally high officials can degree of acrylic resin and monomer, which will bring high hardness and brittleness of the film at the same time, limited the application of the film.

Of course, NVSU233A D1 365nm Ultraviolet LED Lights for UV Coating initiator molar extinction coefficient is generally low, but also has its own unique advantages, ultraviolet light in the coating of the transmission rate is high, conductive to the deep curing of thick coating.

www.leduvcuring.com

3.Different storage, transportation, construction conditions and construction process of the coating itself performance requirements

In coating field, Soldering UV LED Lights Lights for UV Flashlight have roll besmear, spray coating, drench besmear to wait for different construction craft, have different requirement to the viscosity of coating, and different base material, also have different requirement to the infiltration sex of coating, adhesion to wait a moment. And the condition of carriage, storage also has different requirement to storage stability of coating itself, so when coating formula is designed, should consider these factors to go into.

4.Different applications require different film properties

Because different application domain, to the performance of paint film, for instance glossiness, chroma, hardness, tenacity, wear-resisting, fight impact to wait a moment, Safety UV Chip for UV Coating can have different requirement. Therefore, when developing coatings, the balance between curing effect and film performance should be taken into account.

3W UV LED Lamp 60 Degree Quartz Glass Lens 45 Degree Glass Lens 365nm 395nm 405nm

3W 365nm 375nm 385nm 395nm 405nm 410nm 415nm 420nm high power 3535 UV LED Lamp, 45 degree and 60 degree quartz glass lens 3535 size 

Pure 3535 UV Light Source Features :

● CMH real inorganic package 

● Dimension尺寸 3.70mm×3.70mm×2.67mm  

● Long operating life

● High reliability

● Superior ESD protection

● RoHS compliant

High Power Ultraviolet Lamp Applications :

● Fluorescent spectroscopy

● Sensors and monitors

● Bio-analysis/detection

● Phototherapy

● UV curing

● Printing

● Coating

3535 Ultraviolet Lamps Parameters :

Peak Wavelength : 360-420nm choosable

Radiant Flux : 1355-1641mW/cm2

Forward Voltage : 3.4-4.2V

Forward Current : 1200mA  

View Angle : 45°, 60°

Notes:

*This Customized 3W 365nm UV LED  is designed to be reflow soldered on to a PCB. If dip soldered or hand soldered,We cannot guarantee its reliability.

*Reflow soldering must not be performed more than twice.

*Avoid rapid cooling. Ramp down the temperature gradually from the peak temperature.

*Nitrogen reflow soldering is recommended. Air flow soldering conditions can cause optical degradation,

caused by heat and/or atmosphere.

*Since the glass used in the encapsulating glass is fragile, do not press on the hermetic glass.

pressure can cause nicks, chip-outs, Sealant layer and deformation, and wire breaks, decreasing reliability

*Repairing should not be done after the LEDs have been soldered.

It should be confirmed beforehand whether the characteristics of the LEDs will or will not be damaged by repairing.

*The Die Heat Sink should be soldered to customer PCB. If it is difficult or impossible, use high heat-dissipating adhesive.

*When soldering, do not apply stress to the LED while the LED is hot.

*When using a pick and place machine, choose an appropriate nozzle for this product.

*When flux is used, it should be a halogen free flux. Ensure that the manufacturing process is not designed in a manner.

*Where the flux will come in contact with the LEDs.

*Make sure that there are no issues with the type and amount of solder that is being used.

CAUTIONS

1. Handling Precautions

● Do not handle the LEDs with bare hands as it will contaminate the LEDs surface and may

affect the optical characteristics.

● When handling the product with tweezers, be careful not to apply excessive force to the

glass. Otherwise, the glass can be cut, chipped, delaminate or deformed, causing wire-bond breaks and catastrophic failures.

■  Dropping the product may cause damage.

2. Electrostatic Discharge (ESD)

● The product are sensitive to static electricity or surge voltage. ESD can damage a die and

its reliability. When handling the products, the following measure against electrostatic dis-

charge are strongly recommended:

Eliminating wrist strap, ESD footwear, clothes, and floors

Grounded workstation equipment and tools

ESD table/shelf mat made of conductive materials

● Ensure that tools, jigs and machines that are being used are properly grounded and that

proper grounding techniques are used in work areas. For devices/equipment that mount the LEDs, protection against surge voltages should also be used.

● The customer is advised to check if the LEDs are damage by ESD

When performing the characteristics inspection of the LEDs in the application.

Damage can be detected with a forward voltage measurement at low current(≤1mA).

3. Eye Safety

● Please proceed with caution when handling any UVLEDs driven at low or high current.

Since UV light can be harmful to eyes, do Not look directly into the UV light, even through an optical instrument.

●  UV protective glasses are required to use in order to avoid damage by UV light in case of viewing UV light directly.

150mm UV LED Linear System UV Curing Machine Manufacturer Supply

150mm Linear UV Light Light Curing System illuminating, with 365nm 395nm, curing UV glue and UV ink, can set time and illumination, external pedal RS232 and other multi-function.

parameter of Linear UV Curing Machine

Controller specification

shape	L320*W130*H130mm	weight	2.7kg
cool down	Air cooled	Input power	100-240V AC 50-60 HZ
material	Black, gold	Number of driving heads	One
RS232 serial communication	Can query and adjust intensity, time, mode	Display and operation	Touch screen for adjustable time and intensity
LED time accumulation	Active record cumulative usage time	External terminalblock	Can be connected with single-chip, PLC and other equipment for control and working status feedback

Glow head specifications

Light size	150 * 8mm	power	110W
Dimensions	L 192*W105*H30 mm	Recommended height	1-20 mm
cool down	Air cooled	wavelength	365 / 385 / 395 / 405
Material / weight	Sheet metal, blue paint / 0.25kg	Luminous power (mW/cm 2 )	365nm	2800mW/cm2 @ EIT
		Prediction of service life	20000 H

Installation size:

Application field of Small Area LED UV Curing Light

UV LED line source

The UV LED line source is one type of UV LED source, and the line source is a mode that only emits light. It is a long-range UV belt that is output through a specially designed optical lens set to meet the production needs of the edge banding, printing and other fields. Line light source has long life, cold light source, no heat radiation, long life without being affected by opening and closing times, high energy, uniform illumination to improve production efficiency, and no toxic substances are safer and more environmentally friendly than traditional light sources. 

UV LED line source use and scope of use:

microelectronics, liquid crystal,PCB, optical communication, optical and other linear light curing;

High-grade furniture UV paint curing;

Printing anti-counterfeiting detection;

Crafts spray curing;

TFT-LCD liquid crystal panel filling port package.

Capacitive screen side curing, edge sealing curing 

liquid crystal glue bonding side curing 

mobile phone screen refurbished water glue bonding side curing 

LED , LCD , OLED screen sealing edge curing

Linear curing, curing slit, the slit adhesive 

UV LED line light source used in smart phones 

1 , the mobile phone screen and the bezel adhesive phone 

2 , phone housing an adhesive 

3 , the side key adhesively fixed 

4 , the camera positioning of the window 

5 , LOGO of Paste 

6 , smart phone with cover 

7 , of the sound box , smart phone FPC antenna and chassis 

8 , camera module between HOLDER and FPC ( FPC bending area) 

9 , mobile phone flat motor cable fixed . 

10 , fixed phone motherboard

Microelectronics Industry - UV Light Curing Applications    

1 , mobile phone component assembly (camera lens, earpiece, microphone , housing , LCD module , touch screen coating, etc.)  

2 , hard disk head assembly (gold wire fixing , bearing , coil , die bonding, etc.)  

3 , DVD / digital camera (lens , lens bonding, circuit board reinforcement)

4 , motor and component assembly (wire , coil fixed, coil end fixed , PTC / NTC component bonding , protection transformer core)  

5 , semiconductor chip (moisture protection coating , wafer mask , wafer contamination inspection , UV tape exposure , wafer polishing inspection)  

6 , sensor production (gas sensors, photoelectric sensors, fiber optic sensors, photoelectric encoders, etc.)

7 , laser UV curing application

PCB industry UVLED light curing application

1 , components (capacitors , inductors , various plug-ins , screws , chips, etc.) fixed

2 , moisture-proof potting and core circuit, chip protection , antioxidant coating protection

3 , circuit board type (corner) coating

4 , ground wire , flying wire , coil fixed

5 , wave soldering through hole mask

Medical device UVLED light curing application

UV glue bonding makes economical automated assembly of medical devices easier. Nowadays , the advanced LED UV light source system , which can cure solvent-free UV glue for a few seconds , as well as the dispensing system , makes an effective and economical method for consistent and repetitive bonding of medical device assembly processes. The optimization and control of UV light sources is very important for the manufacture of reliable medical devices. The use of UV-curable glue offers many advantages , such as lower energy requirements , saving cure time and location , increasing productivity and making automation easier. UV glue is commonly used to bond and seal medical devices that require very high quality and best reliability. UV glue curing Typical applications are in the medical device assembly , such as the need bond 1) of different material ( or different mechanical properties ) 2) material is not thick enough , can not use the soldering method 3 ) pre-production of sub-parts. .

1 , anesthesia mask 2 , syringe 3 , catheter 4 , intravenous infusion tube 5 , vascular implant accessories 6 . Endoscope 7 , arterial positioning 8 , tubular drainage device 9 , tracheal tube 10 , blood oxygenator 11 , hearing aid 12 , detection , monitoring , and imaging equipment 13 , biochip 14 , bonding PVC, thermoplastic ( polycarbonate) Fat and ABS)

Optical Industry - ST-UVLED Light Curing Applications  

1. Optical component assembly (lens group , prism , optical engine assembly)   

2. Image instrument assembly (microscope , endoscope , infrared , night vision , probe, etc.)

Optical communication industry UVLED light curing application  

1.Passive components (wavelength division multiplexer WDM, array grating waveguide AWG, optical splitter SPLITTER, optical isolatorISOLATOR, optical coupler COUPLOR, etc.) , various glass package structure bonding or potting , fixing of small components Wait.  

2.Active devices (coaxial devices TOSA/ROSA/BOSA, VCSEL , laser collimators, etc.), especially FTTX low-cost miniaturized plastic package structures  

3. Fiber optic cable (overcoat , marking , bonding, fiber optic gyroscope)

Research and Institute - ST-UVLED Light Curing Application

1. Polymer chemistry ( nano coating , photocurable resin , photosensitizer , monomer , UV ink, etc. )

2 , medical polymer materials ( medical plastics , catheters ), microorganisms

3 , photochemistry ( photocatalysis , photoexcitation , photosynthesis, etc. )

4 , semiconductor ( light accelerated etching , cutting , uv tape, etc. )

other apps  

1. UV analyzer, biological genetic engineering, molecular genetics, medical hygiene, biological products, pharmaceutical research, health and epidemic prevention, dye chemical, petrochemical, textile industry, public security and political law department, cultural relics and archaeological department, where fluorescence analysis is required. The department can use it.  

2 , biochemistry , microbiology , genetics , genetics , medicine , catalysis, each channel uses different wavelengths of ultraviolet LED ,from 240nm to 410nm , every 5nm step, for detailed analysis   

3 , ultraviolet light therapy, medical applications, such as: dental curing, vitiligo treatment, wound complex promotion. 

4 , standard light source, because LED light spectrum is relatively single, energy is consistent, can be used as an effective standard light source  

5 , criminal investigation light source, with high-power LED , can emit a uniform intensity of light from 365nm to 780nm , from ultraviolet, purple, blue, green, blue, yellow, orange, red, to the infrared band, can provide 12 bands The light and includes a white light.  

FPC surface protection adhesive curing, 150mm UV LED Curing Machine features: 

1 : cold light source, no heat radiation, especially suitable for liquid crystal edge sealing, film printing requires a small temperature rise area for use. 

2 : Instantly illuminate, instantly achieve 100% power UV output, and the irradiation intensity can reach 8000-9000mW/cm2. 

3 : Small size - makes the equipment easy to integrate into fully automatic production lines and equipment. 

4 : It does not use toxic substances and does not produce ozone. It is a safer and more environmentally friendly alternative to traditional light sources.

More specifications please contact us or click : Linear Curing UV LED Light

15W Korea LG Four LED Chips UV Flashlight UV LED Light Beads 365nm

Korea LG Four Chips 365nm UV LED Light Beads is encapsulated quartz glass lens. In the encapsulation technology, the lamp bead encapsulated with four chips is not suitable for silicone lens, which is easy to be yellow and fall off, and the light fades quickly.

LG UV LED Curing LED Chip, Newly developed ultra-high quartz glass lens + ceramic packaging technology, small angle light design, packaging size of 7070, silicon-based UV LED emitting high purity purple light, high current resistance, low thermal resistance, etc.

Suitable for : electronic offset printing (adhesive curing), ceramic and metal painting glazing, fiber drawing, printing, ink printing and other curing application market.

Product Feature :

Ceramic substrate seal

ESD protective

Support Surface Mount Technology (SMT)

Size : 7.0*7.0 mm

Typical Optical Power :

385nm  4200mW @1500mA 

395nm  4400mW @1500mA 

( Maximum allowable working current : IF max= ：2000mA )

Chip type : 55 mil silicon vertical LED chip

Send light angle : 68°

Application :

banknote inspection, mosquito control, manicure, industrial curing

Characteristic Parameters : (T solder pad = 25 ℃)

Characteristic	Symbol	Minimum Value	Typical Value	Maximum Value	Unit	Test Condition
Optical Power (385)	∮e	4000	4200	5000	mW	IF=1500mA & 25 ℃
Optical Power (395)	∮e	4000	4400	5000	mW
Forward Voltage	VF	3	-	3.8	V
Direct Current	IF	-	1500	2000	mA
Backward Voltage	VR			5	V
Wavelength	WLR	365		405	nm
Irradiation Angle	2θ1/2	-	68	-	°
Thermal Resistance			2.5		℃ / W
HBM	ESD		8000		V
T j (Junction Temperature)	T j			125	℃

Note :

1.When the lamp bead is normally lit, the maximum allowable current is IFMAX = 200mA

2.The lamp bead test data is obtained by UV integrating ball test in cold pulse mode.

3.For lamp bead module products, the maximum temperature TC of PCB board shall not exceed 90℃. (protect chip junction temperature T j≤125℃)

4.The recommended current of this product is IF=500mA, mainly used for curing class light mode for customers.

Optical Power Parameter : (T solder pad = 25 ℃)

Wavelength	Wavelength Range		Optical Power		Test Condition
	Minimum	Maximum	Grading	Optical Power mW
UV Wavelength	380	405	KM	4000-5000	IF=1500Ma & 25 ℃

Note : optical power test error : ±8%

Product coding rules :

VG-P5-KM-TD

Example : the rank of peak wavelength is P5. It means that the peak wavelength range is 380-385nm.

Voltage Step :

Rank	Minimum	Maximum	Test Condition
TD	6.5	7.5	T solder pad = 25 ℃

Step Size :

1. Peak wavelength grading

Rank	Minimum	Maximum	Test Condition
P1	400	405	T solder pad = 25 ℃ IF = 1000mA
P2	395	400
P3	390	395
P4	385	390
P5	380	385

Note : peak wavelength test error : ±1.5nm.

2. Optical Power Grading

Rank	Minimum	Maximum	Test Condition
KM	4000	5000	T solder pad = 25 ℃ IF = 1000mA

Note : Luminance test error : ±8%.

Precautions for use

How to store Korea LG UV LED ?

1. The product should be stored in an environment with a dry, relative humidity of less than 30% and a storage temperature of 5 to 30 °C. 

2. Avoid external damage to the vacuum bag to prevent the bag from leaking and getting wet. 

3. Pay attention to moisture. If it is damp, put the patch reel in a 60 °C oven for 24 hours; remove the tape from the bag, preferably within 12 hours 

4. LED lights that have been unsealed from the original packaging but have not been soldered should be stored in one of the following ways: 

a. After opening, the LED lights can be resealed in the original vacuum bag. 

b. Store the parts in a sturdy metal container with a tight lid attached. Place the fresh desiccant and humidity card in a container and check that the relative  humidity is less than 30%. 

c. Store the parts in a dry, nitrogen-purified cabinet or container and require the cabinet or container to effectively maintain the relative humidity below 30%. 

d. After reopening, the reflow soldering is completed within 24 hours. The workshop condition is ≤30°C/60%RH. 

e. If there is no environment with a relative humidity below 30% for storage, one hour before reflow, it must be baked. 

5. When stacking PCBs or components that contain LEDs, do not drop all weight on the lens. The force applied to the lens can cause the lens to fall off. 

A clearance of at least 2 cm should be left above the LED lens, and the foamed wrapping paper should not be used directly on the lamp. The force from the foamed packaging can damage the LED 

reflow soldering conditions 

1. The printed circuit board should be prepared or cleaned in accordance with the manufacturer's specifications before the LEDs can be placed or soldered onto the PCB. 

2. Our company's LEDs are designed to be soldered to the PCB by reflow soldering. Reflow soldering can be done in a reflow oven or by placing the PCB on a hot plate and 

following the reflow profile.

3. Pay attention to the reflow conditions when using, and reflow soldering after debugging the reflow temperature. Reflow conditions: preheating temperature 100 ~ 150 ℃; reflow 

soldering temperature of 230 ~ 260 ℃, the welding time of 10 seconds.Operators should take electrostatic protection measures and all equipment must be grounded reliably. 

4. Reflow soldering should not exceed 2 times at most. 

5. Do not apply pressure to the lamp bead when passing the lamp. 

6. After the lamp is over, the PCB board cannot be packaged immediately. The PCB board and the lamp bead should be naturally cooled. 

Cleaning 

after reflow soldering 1. After soldering, the lamp bead should be cooled to room temperature for further processing. Premature handling of the device, especially around the lens, can result in product damage. 

2. It is recommended to check the weld consistency. After avoiding the selected parts of the board, the welding process should be able to achieve complete look at reflux (no clear 

significant weld particles). From the back of the package and board, there should be almost no holes visible in the soldered area. 

3. When cleaning the PCB after soldering, use isopropyl alcohol to clean the PCB. Do not use ultrasonic cleaning. Do not use water to clean PCB boards that have been fitted with lamp beads. 

4. Do not use the following chemicals for cleaning: chemicals that 

may cause outgassing of aromatic hydrocarbon compounds (eg toluene, xylene) 

a. methyl acetate or ethyl acetate (ie: nail polish cleaner) 

b. cyanoacrylate Ester (ie: 

superglue ) c. Ethylene glycol (including Radio Shack® precision electronic cleaner) 

d.PLIOBOND® adhesive      

Installation method 

1. High Intensity UV LED Chip has anti-static requirements, and appropriate anti-static measures should be taken during installation and use.  

2. Pay attention to the arrangement of the external lines of various devices to prevent the polarity from being wrong. The device must not be too close to the heating element and the operating conditions should not exceed the specified limits. 

3. When deciding to install in the hole, calculate the hole size and tolerance of the hole on the board to avoid excessive pressure on the board. 

4. Avoid subjecting the LED to any vibration and external forces. 

Operating conditions 

1. In order for the LED to operate under stable conditions, a series of protective resistors must be connected in series, and the resistance value can be measured by the supply voltage or current of the LED. LED work 

for the voltage and current given by a variety of product specifications requirements LED. 

2. The circuit must be designed to prevent overvoltage (or overcurrent) that can occur during LED switching. Short current or pulse current can damage the LED connections. 

3. When the Fiber Drawing UV Curing UV Light LED light source is working, the ambient temperature will affect its life reliability. Please keep away from the heat source while working, and the surface temperature should be controlled within 60 °C 

. 4. Incompatible volatile organic compounds in the LED-based solid-state lighting design. , may weaken the performance of the illumination system, shorten its 

life, so avoid the use of organic compounds in the design and operation. 

Other matters 

1. This product is a silicone package and cannot be extruded with a hard object. 

2. All equipment that touches the LED must be grounded. Operators must wear grounded anti-static gloves, anti-static shoes and anti-static clothing.