UV Adhesive for Curved-Screen Tempered Glass Protectors

This UV adhesive is specially designed for bonding tempered glass screen protectors to curved screen phones. It cures quickly, produces no bubbles, provides a perfect fit, and does not shrink.

3730 UV Lens Bonding Adhesive is a one-component, UV-curable adhesive specifically developed for optical lens assembly, camera module manufacturing, sensor packaging, and precision electronic component fixation.

Featuring high viscosity, excellent bonding strength, low shrinkage, and outstanding dielectric properties, the adhesive provides reliable positioning and long-term stability for optical and electronic applications.

The material cures rapidly under UV LED exposure and offers excellent mechanical strength and environmental resistance after curing.

Fast UV LED Curing

• Single-component formulation
• Rapid curing under UV light
• Suitable for automated production lines
• No mixing required

Excellent Positioning Capability

The high viscosity of 20,000 mPa·s helps prevent adhesive flow during assembly, ensuring accurate lens positioning and alignment.

Strong Mechanical Performance

• Shore D Hardness: 75
• Excellent impact resistance
• High dimensional stability after curing

Outstanding Electrical Insulation

• Dielectric Strength: 25 kV/mm
• Suitable for optical-electronic packaging applications
• Reliable insulation performance

Good Thermal Stability

• Glass Transition Temperature (Tg): 75°C
• Maintains performance under elevated temperatures

Camera Module Assembly

    Lens barrel bonding                       Lens holder fixation                             IR filter positioning

Optical Component Manufacturing

Glass lens bonding                         Optical sensor packaging                      Optical module assembly

Consumer Electronics

Camera lens fixation                         Sensor packaging                            Precision electronic assembly

Industrial Electronics

Optical inspection systems                   Machine vision cameras                   Precision instrument assembly

High Viscosity Formula

Compared with low-viscosity optical adhesives, 3730 provides superior gap filling and positioning performance, making it ideal for vertical surfaces and precision optical assemblies.

Excellent Adhesion

• Glass
• Optical glass
• Metal
• Ceramic
• Polycarbonate (PC)
• PMMA
• Engineering plastics

Reliable Long-Term Performance

• Excellent humidity resistance
• Good thermal stability
• Strong vibration resistance
• Stable optical performance

For optimal curing performance, 3730 adhesive is recommended to be used with:

• UV LED Spot Curing Systems
• UV LED Point Light Sources
• UV LED Flood Lamps
• UV LED Automated Curing Equipment

Recommended wavelengths:

• 365nm
• 385nm
• 395nm
• 405nm

• Store at 5°C–25°C
• Keep away from direct sunlight
• Keep container tightly closed when not in use
• Avoid contamination during dispensing

Standard Package:

• 1 kg Bottle

Custom packaging options are available upon request.

What applications is 3730 adhesive suitable for?

It is designed for optical lens bonding, camera module assembly, sensor packaging, and precision electronic component fixation.

What is the curing requirement?

A UV energy dose of approximately 1200 mJ/cm² is recommended for complete curing.

Does the adhesive have good insulation performance?

Yes. The dielectric strength reaches 25 kV/mm, providing excellent electrical insulation.

What is the hardness after curing?

The cured hardness is 75 Shore D.

What is the shelf life?

The product has a shelf life of 12 months when stored properly.

Is it suitable for automated production lines?

The product has a shelf life of 12 months when stored properly.