March 3, 2011 -- Nordson ASYMTEK, dispensing, coating, and jetting technologies provider, introduced jet dispensing for manufacturing of side-view LEDs. The Spectrum S-920N fluid dispenser jets 0.1 to 0.2mm dots through windows as small as 0.4mm into LED cavities.
Nordson ASYMTEK's Spectrum S-920N jetting system automatically maintains a consistent shot weight with software-managed dispense parameters. Closed-loop dispensing eliminates operator adjustment. "Consistent dispensing weight improves process capability while ensuring higher units per hour," said Akira Morita, business development manager at Nordson ASYMTEK. "Using CPJ+ (calibrated process jetting plus), the process variability is reduced for tight LED color quality."
The system uses a jet for non-contact dispensing. Unlike a needle, the jet retracts much less for silicone break off and therefore shoots multiple shots faster, increasing speed and throughput. The jet's small, controlled drops of fluid reach tight cavities consistently and reliably, unlike needles which have orifices larger than the cavity windows of side-view LEDs. Nordson ASYMTEK states that the system is easier to set up and maintain in production than multi-headed needle dispensing systems.
Side-view LEDs are incorporated into displays in tablet computers, smart phones, e-readers, and other devices. "As these LED devices get slimmer, the challenge to dispense specialized fluids, like silicone phosphor, into these tight spaces becomes greater," explained Morita.
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Nordson ASYMTEK provides precision automated fluid dispensing, conformal coating, and jetting technologies and designs and manufactures a full line of dispensing and coating systems. Nordson Corporation (Nasdaq: NDSN) is one of the world's leading producers of precision dispensing equipment that applies adhesives, sealants, liquid and powder coatings and other materials to a broad range of consumer and industrial products during manufacturing operations. For more information, visit www.nordsonasymtek.com