Polyimide And Photoresist Ultrasonic Spraying Coating System With Micro Nozzle

Hangzhou Shengtu Technology Co., Ltd. is one of the leading manufacturers and suppliers of polyimide and photoresist ultrasonic spraying coating system with micro nozzle in China. Welcome to buy high quality customized products at low price from our factory. Contact us for more details.

Ultrasonic spraying systems have been verified to deliver consistent, repeatable coating layers for photoresist and polyimide materials, making them a straightforward, cost-effective and highly replicable process for such film deposition.
Typical use cases for ultrasonic polyimide and photoresist coating cover MEMS components, optical lenses, microfluidic chips, microelectronic devices and filters, among others. The coating equipment works well on both planar and three-dimensional substrates, commonly silicon wafers, glass, ceramics and metallic materials.

An ultrasonic nozzle is a resonant tuning device operating at a designated resonant frequency. Its maximum overall length and outer diameter are inversely proportional to its resonant frequency, with an available working frequency range of 25 kHz to 120 kHz. In short, a higher ultrasonic frequency corresponds to a smaller transducer size, alongside finer droplets produced by nozzle atomization.

An ultrasonic nozzle is assembled from multiple core components. Its driving unit comprises two piezoelectric transducers that convert electrical energy into mechanical vibration. High-frequency excitation power is supplied by an independent ultrasonic generator, which automatically locks and tracks the nozzle's resonant frequency. The piezoelectric stack is sandwiched between two titanium horns. These titanium horns amplify mechanical vibration to maximize energy transmission to the atomizing tip. Titanium is selected for its high tensile strength, superior acoustic transmission performance and outstanding corrosion resistance.

Process liquid is delivered to the atomizing tip via a full-length, large-diameter internal flow channel. Upon reaching the atomizing surface, the fluid is subjected to high-amplitude vibration and broken down into low-velocity fine droplets with a velocity below 3 inches per second. Stable atomization requires operating power to be maintained within a narrow effective range. Insufficient input power fails to trigger atomization entirely. Excessively high power violently shears the liquid into large splashes, which renders the spray unusable for precision coating applications. In general, the operating power of the nozzle ranges from 1 W to 15 W, depending on nozzle geometry and physical properties of the liquid being sprayed.

Be used in a wide range of industries.

 

Anion membrane electrode spraying

Carbon paper spraying

Flux spraying

Perovskite battery spraying

Photovoltaic cell

Solar panel spraying

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