Jet Valve
What is a Jet Valve?
A jet valve is a contactless dispensing valve that precisely dispenses smallest quantities of adhesives and other liquids without direct contact to the substrate. These high-precision systems enable application of drops in the microliter range through pneumatic or piezoelectric drives.
Properties of Jet Valves
- Contactless dispensing of smallest quantities
- High-precision droplet formation in microliter range
- Fast switching times for high cycle rates
- Reproducible dispensing quantities and positions
- Minimal material waste
- Easy integration into automated systems
Operating Principles
- Pneumatic systems: Pressure impulse for droplet ejection
- Piezoelectric drives: Precise volume displacement
- Valveless systems: Direct material ejection
- Dispensing Valves with jet function
Applications
- Die Attach: Precise adhesive application in semiconductor manufacturing
- Glob Top: Drop-shaped protective layers
- SMD manufacturing: Adhesive dots for components
- Semiconductor Packages: Precise sealing applications
Material Compatibility
- Low-viscosity 1-Component Adhesives
- IBOA-free UV adhesives for safe operation
- High Temperature Potting Compound at elevated processing temperature
- Special formulations for jet application
Process Parameters
- Drop size: 0.5 to 50 microliters
- Dispensing frequency: Up to 1000 Hz possible
- Flight distance: Typically 1-5 mm from valve to substrate
- Controlled flash-off time after dispensing
Advantages Over Contact Dispensing
- No substrate contamination
- Dispensing on uneven surfaces possible
- Reduced wear of dispensing components
- Higher dispensing speeds achievable
DELO Adhesive Solutions
- Jet valve-compatible adhesive formulations
- Activis Systems: Integrated jet dispensing and UV curing
- Process optimization for jet applications
Looking for jet valves for precise adhesive application?
