Ultrasonic Spraying Protective Coating for Packaging Grade EMI Shielding
Packaging grade EMI (electromagnetic interference) shielding spray paint with precise thickness control
Ultrasonic coating technology, combined with low-temperature heat treatment, provides a cost-effective option for packaging grade EMI (electromagnetic interference) shielding processes. In the manufacturing process of mobile devices, high-performance silver EMI shielding spray paint materials are applied to the fully automatic XYZ motion spraying system of ultrasonic spraying machines. Can be configured as an online conveyor for high-throughput processes.
Non condensable ultrasonic coating technology is a well-known functional and protective material for ultra-thin micro layer coatings. The ultrasonic vibration of the nozzle effectively disperses particles in the suspension and makes the dispersion of particles in the thin film layer very uniform, without causing conductive particles to settle in the suspension.
Silver injected epoxy shielding material has been used for several years. Thinner and lighter device designs have transitioned from board shielding to IC packaging shielding, resulting in higher board density. A silver containing polyester coating was prepared using ultrasonic spraying and package placement instead of splashing.
In a small part of the cost of spray technology, ultrasonic spray systems have been used as a substitute for chemical vascular diseases, and cost savings are an important issue in the manufacturing process. Effective EMI shielding spray painting enables high processing speed without the operational damage caused by electromagnetic interference from adjacent equipment.
Benefits of ultrasonic coating technology for EMI shielding coating process:
- Complete thin film coverage of geometric shapes with good uniformity
- The ratio of top surface to sidewall thickness is 1.0 to 0.5-0.7%
- high throughput
- Due to uniform particle distribution, the surface conductivity is excellent
- Efficient shielding of small devices
- Excellent geometric sidewall coverage for inclined rotation of ultrasonic nozzle
- Precision thickness control
- Flexible and programmable nozzle tilt and rotation capability
- No backside contamination
- The adhesion performance has been proven to be excellent
- Simple and cost-effective technology
