Ultrasonic Spraying TPU Coating Technology

Ultrasonic spraying TPU (thermoplastic polyurethane) coating technology is an advanced surface treatment technology that can form a uniform polyurethane film on the support skeleton of nickel-titanium metal. The following is a detailed introduction to the technology:

1. Technical principle: Ultrasonic atomization: Use the high-frequency vibration energy of ultrasound to convert liquid TPU coating into tiny droplets. Ultrasonic vibration causes the coating liquid to form fine mist particles at the nozzle. The size of these droplets is usually between a few microns and tens of microns. They are very uniform and small, and can better adhere to the surface of the nickel-titanium metal support skeleton.

• Spray deposition: Under a certain pressure and airflow, these atomized TPU droplets are evenly sprayed onto the nickel-titanium metal support skeleton. With the continuous deposition of droplets, a uniform TPU film is gradually formed on the surface of the support skeleton.

2. Technical advantages: High coating uniformity: Ultrasonic spraying technology can ensure that the TPU coating is evenly distributed on the nickel-titanium metal support skeleton, avoiding problems such as uneven coating thickness, dripping, and missing coating that may occur in traditional spraying methods. This is very important for ensuring the quality and performance of the coating. For example, in the medical field, a uniform coating can ensure the stability and reliability of the performance of medical devices.

• Strong adhesion: The vibration of ultrasound can make the TPU droplets contact and combine better with the nickel-titanium metal surface, thereby improving the adhesion of the coating. A coating with strong adhesion can ensure that it is not easy to fall off or peel off during use, extending the service life of the product.
• The coating thickness can be precisely controlled: By adjusting the parameters of ultrasonic spraying, such as spraying time, paint flow, ultrasonic power, etc., the thickness of the TPU coating can be precisely controlled. This is very critical for different application scenarios and needs. For example, in some medical devices or industrial parts that have strict requirements on coating thickness, the coating thickness can be precisely controlled according to specific requirements.
• Wide range of applications: This technology is suitable for nickel-titanium metal support skeletons of various shapes and sizes. Whether it is a simple planar structure or a complex three-dimensional structure, uniform TPU coating can be achieved through ultrasonic spraying.

3. Process flow: Surface pretreatment: Before ultrasonic spraying, the nickel-titanium metal support skeleton needs to be surface pretreated to remove impurities such as oil, dust, oxides, etc. on the surface and improve the adhesion of the TPU coating. Pretreatment methods usually include cleaning, degreasing, sandblasting, etc.

• Coating preparation: Select the appropriate TPU coating and mix it to the appropriate concentration and viscosity according to the process requirements. Ensure that the quality and performance of the coating meet the requirements to avoid clogging the nozzle or affecting the coating quality during the spraying process.
• Ultrasonic spraying: Fix the pretreated nickel-titanium metal support skeleton on the workbench of the spraying equipment, start the ultrasonic spraying equipment, and spray the TPU coating evenly on the surface of the support skeleton. During the spraying process, it is necessary to control the parameters such as the speed, distance and angle of the spraying to ensure the quality of the coating.
• Curing treatment: After spraying, the TPU coating needs to be cured to evaporate the solvent in the coating and cure the coating. The curing methods usually include thermal curing, ultraviolet curing, etc. The specific curing conditions depend on the properties and requirements of the TPU coating.

4. Application fields: Medical devices: In the medical field, the combination of nickel-titanium metal support skeleton and TPU coating is often used to manufacture medical devices such as vascular stents, catheters, artificial joints, etc. The biocompatibility and lubricity of TPU film can improve the safety and comfort of medical devices, while also reducing stimulation and damage to human tissues.

• Industrial field: In the industrial field, this technology can be used to manufacture various parts, such as seals, wear-resistant parts, anti-corrosion parts, etc. The wear resistance, corrosion resistance and anti-aging properties of TPU film can improve the service life and reliability of parts.

About Cheersonic

Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.

Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.

Chinese Website: Cheersonic Provides Professional Coating Solutions