Ultrasonic Atomizer Nozzle Coating Technology For Thin Film Layer

Hangzhou Shengtu Technology Co., Ltd. is one of the leading manufacturers and suppliers of ultrasonic atomizer nozzle coating technology for thin film layer in China. Welcome to buy high quality customized products at low price from our factory. Contact us for more details.

 

 

Ultrasonic atomizer nozzle coating technology for thin‑film layers relies on ultrasonic‑based spray hardware and is widely deployed for liquid atomization and spray coating processes.

Within ultrasonic nozzles, piezoelectric transducers transform high‑frequency acoustic waves into mechanical energy to produce high‑frequency longitudinal vibration. This reciprocating vertical movement creates standing waves across the liquid film at the nozzle tip; wave amplitude is adjustable via the ultrasonic generator. Liquid ripples rise from the nozzle orifice and eventually break apart into fine, uniformly‑sized droplets that carry minimal kinetic energy.

 

 

 

 

1. Liquid Physical Properties

Viscosity: Highly viscous liquids are difficult to atomize effectively. Processing such liquids typically requires higher ultrasonic power or adjusted operating frequencies to achieve stable atomization.

Surface tension: Liquids with high surface tension (e.g., water) are harder to atomize compared to low-surface-tension liquids such as ethanol. Surface tension restricts liquid film breakup, directly reducing atomization uniformity.

 

2. Nozzle Structural Design

Nozzle shape: The geometric structure and orifice size of an ultrasonic nozzle directly influence liquid flow rate and overall atomization quality, determining the initial state of liquid film formation at the nozzle tip.

Vibration mode: Different vibration modes, including vertical and horizontal vibration, alter the spray trajectory of liquid droplets and adjust the particle size distribution of the atomized spray.

 

3. Operating Parameters

Liquid pressure: Appropriately increased liquid pressure can optimize atomization performance. However, excessive pressure will cause inconsistent droplet sizes and result in uneven spraying.

Ultrasonic power: Within a reasonable range, higher ultrasonic power delivers finer and more uniform atomization results. Meanwhile, equipment energy consumption and operating costs need to be balanced in practical operation.

 

4. Ambient Environmental Conditions

Temperature and humidity: High-temperature or low-humidity environments accelerate the evaporation of tiny droplets during spraying. This changes droplet morphology and ultimately weakens the overall atomization and coating effect.

Air flow: Ambient air flow speed affects the floating, diffusion and final deposition distribution of atomized droplets on the target surface.

 

5. Spraying Distance

Spray distance: The vertical distance between the nozzle orifice and the target surface controls the airborne residence time of droplets. This parameter significantly impacts droplet evaporation degree, diffusion range and final spray coating uniformity.

 

6. Liquid Composition and Additives

Additives: Specific chemical additives can effectively reduce the surface tension and viscosity of the base liquid. Optimized liquid physical properties facilitate liquid film breakup, thereby greatly improving atomization efficiency and spray uniformity.

 

 

 

 

 

 

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