Meter/Mix/Dispense / New Products

NORDSON EFD: Dispense Valve

This company, a Nordson company, has developed a non-contact dispense valve for the precision jetting of low-viscosity flux onto solar cell bus bars. Operating at speeds up to 500 Hz/sec, the Square Wave™ 745NC valve reportedly meets the photovoltaic industry’s need to deposit continuous lines of microdots on the solder-coated metal ribbons that connect adjoining PV wafers. Flux can remove oxidation and contamination to improve solar cell efficiency and power output.

The Square Wave’s solenoid technology can deliver a high-speed cycle rate that reportedly minimizes process variation for repeatable dot-to-dot consistency. A low actuation speed of 2 milliseconds can prevent buildup of flux crystals on the valve’s nozzle, which could prevent the fluid from being deposited precisely on the bus bar.

For additional information, visit www.nordsonefd.com.

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