conformal coating page uv curving machine

UV Curing Oven

The UV curing oven is also called UV furnace, which “UV” is the abbreviation of ultraviolet light. And “curing” refers to the process of converting a substance from a low molecule to a polymer. The UV curing oven is an equipment that obtains a coating film that can also be cross-linked through the rapid polymerization of a monomer/oligomer mixture.

Thus, the UV curing generally refers to the curing conditions or requirements of coatings (paints), adhesives (glue) or other potting sealants that need to be cured with ultraviolet rays, which is different from heating curing, bonding agent (curing agent) curing, natural curing, etc.

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UV Curing Ovens

UV curing ovens are specialized equipment used in various industries to cure or polymerize materials using ultraviolet (UV) light. The UV light triggers a chemical reaction that quickly hardens or cures materials such as adhesives, coatings, inks, and resins.

Key Features and Components of UV Curing Ovens

UV curing ovens consist of the following key features and components:

UV Light Source

The primary component of the oven is the UV light source, which emits high-intensity ultraviolet light. This UV light triggers the curing process of UV-sensitive materials.

Conveyor System

In many UV curing ovens, a conveyor system transports the items through the oven. This ensures that the materials receive even exposure to the UV light for consistent curing.

Control Unit

The control unit manages the operation of the UV curing oven. It controls parameters such as conveyor speed, UV light intensity, exposure time, and temperature (if applicable).

Cooling System

Some UV curing processes generate heat as a byproduct. A cooling system, such as fans or air circulation, may be included to prevent overheating of the cured materials.

Reflectors/Reflective Surfaces

Reflectors or reflective surfaces inside the oven are strategically positioned to maximize the distribution of UV light onto the items being cured, ensuring uniform curing.

Safety Features

UV light can be harmful to human skin and eyes. UV curing ovens often have safety features like interlock systems and protective barriers to prevent exposure to UV light.

Advantages of UV Curing Ovens

Some of the key advantages of UV curing ovens include:


UV curing is rapid compared to traditional curing methods. The curing process takes seconds or minutes, leading to increased production efficiency.


UV curing produces materials with enhanced properties, such as improved adhesion, hardness, and durability.

Environmentally Friendly

UV curing eliminates the need for solvent-based curing methods, reducing volatile organic compound (VOC) emissions.

Energy Efficiency

UV curing requires less energy compared to heat-based curing methods.

Applications of UV Curing Ovens

UV curing ovens are used across many industries:


UV-cured inks and coatings are used in commercial and industrial printing to achieve vibrant colors and rapid drying.


UV-curable adhesives, coatings, and encapsulants are used in electronic assembly for bonding and protection.

Coatings and Finishes

UV-cured coatings are applied to products ranging from wood finishes to automotive paints.

Medical Devices

UV curing is used in the manufacturing of medical devices and dental products.

UV Curing Process

The UV curing process involves:


These absorb UV light and generate free radicals to initiate polymerization.

Free Radicals

The free radicals propagate the curing reaction and link monomers together into polymer chains.


The monomers rapidly join into polymer networks, solidifying the material.

UV Lamp Types

Common UV lamp types include:

Mercury Arc Lamps

Offer high intensity broad-spectrum UV output for rapid curing times.

Metal Halide Lamps

Generate less heat while providing a broad UV spectrum.

Excimer Lamps

Emit high density but narrow-band UV which allows curing with minimal heating.

Implementing UV Curing

To implement an effective UV curing process:

UV Curing Materials

Choose formulations specifically designed for UV cure and polymerization.

Lamp Configuration

Position lamps and use reflectors to ensure uniform light distribution.

Process Validation

Test on a small scale first to validate quality and cure level.

Safety Procedures

Establish proper precautions for working with UV light and ovens.

UV Curing vs Thermal Curing

Some differences between UV curing and thermal curing:

UV curing is significantly faster while thermal curing takes much longer.

UV curing requires UV-sensitive formulations while thermal curing works with most materials.

UV curing generates less heat and allows curing heat-sensitive materials.

The energy consumption of UV curing is lower compared to thermal curing methods.

Limitations of UV Curing Ovens

Some limitations include:

UV curing works best for materials that are sensitive to UV light and have appropriate photoinitiators.

Additionally, the curing depth may be limited to the surface layers of thicker materials.

Future Outlook for UV Curing Technology

Emerging trends in UV curing include:

Increased adoption across more industry verticals

UV LED technology providing more tunable and energy efficient curing

More automated monitoring of process parameters

Innovation in photoinitiator chemistry

Hybrid UV and thermal curing techniques

Features of UV Curing Oven

1. Light Source System

  • The equipment carries 2 sets of electronic dimming light sources at the same time, and the UV light intensity can be adjusted infinitely.
pcb conformal coating uv curing oven feature light source system

2. Conveyor System

  • Stainless steel chain conveyor, the effective width is 50-450mm, the width can be adjusted automatically.
  • The conveying speed can be regulated by the touch screen, and the conveying drive mode is driven by stepper motor.

3. Temperature Alarm System

  • Use of PLC and touch screen control, with independent temperature controller alarm, double over temperature protection.

4. Detection Function

  • The equipment has the function of detecting the entrance and exit board, and the amount and conveying condition of the inner board of the equipment can be observed at any time.

5. Automatic Opening Function

  • Hand-operated lamp lifting method, the device automatically lifts and opens the cover function. It can be observed at any time.

Specification of UV Curing Oven

PCB Transfer Height920 +/- 20mm
Transportation Speed0-3500mm/min
Transfer DirectionL to R (R to L)
Transmission MotorStepper motor + transmission case
Delivery MethodChain conveyor (35B5 extended stainless steel chain)
Number of Temperature Zones2 zones
Temperature of Adjustment RangeWVA, UVB/UVC full range
Heating TimeLess than 5 minutes
Max. PCB Board SizeW450mm*L450mm
Max. PCB Component Height+/- 100mm
Opening MethodTouch screen control
Power SupplyAC380V 50HZ, three phrase
Total Power8KW 14A

Dimension of UV Curing Oven

Dimension (LxWxH, mm)1800x1080x1300
Weight (Kg)490


UV curing ovens are a versatile tool that can be used to cure a variety of materials in a variety of industries. They offer several advantages over traditional curing methods, such as speed, quality, and environmental friendliness. However, UV curing ovens also have some limitations, such as material compatibility. As UV curing technology continues advancing, it will open up new applications and provide manufacturers with an efficient curing solution.

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