Consumer electronics TWS earbud housing coating: polyurethane potting compound case study

Background

An equipment integrator / manufacturer in Consumer electronics needed to coating on a TWS earbud housing using polyurethane potting compound.

Process challenge

Tight cycle time with frequent changeovers that squeeze setup time.

Solution

We recommended Screw Valve + Dispensing Valve, with replacing time-pressure control with a positive-displacement screw valve to meter by volume.

Result

• Volume drift held within ±3% over an 8-hour run.
• Shot volume 0.008 mL with deviation within ±3%.
• Cycle time 0.6 s per dot with no stringing or dripping during continuous running.

Project facts

• Industry: Consumer electronics
• Workpiece: TWS earbud housing
• Fluid: polyurethane potting compound
• Process: coating
• Recommended lines: Screw Valve, Dispensing Valve