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Spray System for Low-E Glass Coating

WideTrack Float Glass
WideTrack Impact Glass Coating System for Protective Inline Anti-Scratch Coatings
onto Low-E Glass


Sono-Tek WideTrack Impact glass coating systems often replace traditional inefficient high pressure nozzle systems, spraying uniform, durable micron thick coatings of protective anti-scratch films with no dripping of polymer and very little overspray and atmospheric contamination. WideTrack is proven for 24/7 continuous low-E glass coating during continuous manufacturing, with spray systems installed at some of the largest glass manufacturers in the world. Savings of up to 80% in coating material have been achieved with our precision ultrasonic spray systems. Unlike pressure nozzles, ultrasonic nozzles will not clog, reducing downtime and maintenance in Low-E glass coating processes.

WideTrack Impact System Benefits:

  • Environmentally friendly spray – virtually no
    overspray and no mess
  • Drastic reduction in maintenance compared to
    pressure spray
  • Drip-free spray
  • Proven reliability for 24/7 glass manufacturing
    with high reliability
  • Exhaust requirements minimized or eliminated
  • Excellent transfer efficiency
  • On the fly control of deposition quantity,
    adjusting to ribbon speed changes


Sono-Tek’s experience and understanding of the unique demands of continuous Low-E glass coating has contributed to making the Widetrack spray system superior for the needs of the industry. It’s proven reliability and low maintenance design make it excellent for 24/7 Low-E glass manufacturing processes.

Typical bridge systems contain 28 Impact ultrasonic nozzles (for 4 meter float glass lines). Some WideTrack Impact system features include:

  • Auto detection of glass
  • No heat build-up despite the high temperatures associated with float glass production
  • Ultrasonic nozzles are compatible with heated liquids
  • Insulated liquid lines keep liquid temperature stable during process
  • Integrated air conditioning system keeps electronics cabinet cooled
  • NEMA rated control tower with 19″ touch screen HMI and user-friendly Windows-based software
  • Line speed encoder for continuous monitoring of process
  • Multi level security and extensive data logging and process monitoring

Impact Nozzle

Operating Principle: Impact ultrasonic nozzles combine Sono-Tek’s unique ultrasonic atomizing nozzle with a controlled jet of air from the flat jet air deflector. The ultrasonically produced spray at the atomizing surface is immediately entrained in the air stream, creating a fan-shaped spray pattern. For more information about the unique nature of ultrasonic spray nozzles, go to http://www.sono-tek.com/how-ultrasonic-nozzles-work.

impact nozzle
Impact Edge Operating Principle


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