PCBA Three-Proof Coating Technology

Three-proof paint used in PCBA manufacturing requires specific viscosity levels based on the coating method. While spraying needs low viscosity, dipping requires high viscosity. The solid content of the paint determines its viscosity, and manufacturers offer thinners to adjust concentrations for different coating processes.

Benefits of Bo Yi Sheng’s PCBA Cleaning Machine

• Utilizes a fully pneumatic method
• Eliminates fire risk without external power source
• Uses eco-friendly water-based solvents
• Safe for the environment and human health

Challenges in Basic Coating Methods

Hand spraying, dipping, and brushing are common but can lead to inconsistent coating quality, paint loss, and environmental issues. Selective active coating machines offer precise spraying, ensuring uniform thickness and avoiding non-paintable components.

Technical Requirements for Selective Active Coating Equipment

• On-line fully automated flow operation
• Capability for various spraying patterns
• Accommodation of multiple spraying heads
• CCD vision centering system for accuracy
• Precise control of spraying volume

Process Requirements for High-Quality Coating

• Proper masking of non-coatable components
• Thorough cleaning of PCBA surface
• Inspection of first piece before mass production
• Controlled humidity during coating process

It is crucial to follow these guidelines to ensure the effectiveness and quality of three-proof coating in PCBA manufacturing.