Precise, non-contact dispensing improves quality and reliability of solar cells
EAST PROVIDENCE, R.I. - Thursday, July 11th 2013 [ME NewsWire]
(BUSINESS WIRE) Nordson EFD, a Nordson company (NASDAQ:NDSN), has developed a non-contact dispense valve for precision jetting of low viscosity flux onto solar cell bus bars. Operating at speeds up to 500Hz/sec, the Square WaveTM 745NC valve meets the photovoltaic industry’s need to deposit continuous lines of microdots on the solder-coated metal ribbons that connect adjoining PV wafers. Flux removes oxidation and contamination to improve solar cell efficiency and power output.
The Square Wave’s innovative solenoid technology delivers a high-speed cycle rate that minimizes process variation for repeatable dot-to-dot consistency. A low actuation speed of 2 milliseconds prevents build-up of flux crystals on the valve’s nozzle which could prevent the fluid from being deposited precisely on the bus bar. The pistons' unique mate
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