Consumer electronics camera module underfill: polyurethane potting compound case study

Background

An equipment integrator / manufacturer in Consumer electronics needed to underfill on a camera module using polyurethane potting compound.

Process challenge

Supply pressure ripple during continuous running, causing volume drift.

Solution

We recommended Screw Valve + Dispensing Valve, with using a high-flow pneumatic valve for staged potting together with vacuum de-airing.

Result

• Potting void defects reduced from 4% to below 1%.
• Shot volume 0.05 mL with deviation within ±3%.
• Cycle time 0.3 s per dot with no stringing or dripping during continuous running.

Project facts

• Industry: Consumer electronics
• Workpiece: camera module
• Fluid: polyurethane potting compound
• Process: underfill
• Recommended lines: Screw Valve, Dispensing Valve