![\"How](\"https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/How-to-avoid-contamination-during-coating.jpg\")
Ensure proper PCB cleaning before coating<\/strong> Control the production environment<\/strong> Handle PCBs correctly<\/strong> Use clean and well-maintained equipment<\/strong> Filter and store coating materials properly<\/strong> Control masking processes<\/strong>
The most important step is removing all residues from the PCB surface. Flux residues, oils, dust, and fingerprints can interfere with coating adhesion. In Assemblage du circuit imprim\u00e9<\/strong>, use appropriate cleaning methods (aqueous or solvent cleaning) followed by thorough drying to eliminate moisture.<\/p>\n
A clean environment is essential during coating. Dust, airborne particles, and humidity can contaminate the coating surface. In Assemblage SMT<\/strong>, coating is often performed in controlled areas with:<\/p>\n\n
Operators should avoid direct contact with PCB surfaces. Wearing gloves and using proper handling tools prevents contamination from skin oils or dirt, especially in Prototype d'assemblage de circuits imprim\u00e9s<\/strong><\/a> where manual handling is more common.<\/p>\n
Spray nozzles, coating tanks, and dispensing systems must be regularly cleaned. Residue buildup or contamination in equipment can transfer directly to the PCB during Rev\u00eatement conforme<\/strong>.<\/p>\n
Coating materials should be stored in sealed containers and used within their shelf life. Filtering the coating before use helps remove particles that could cause defects in Assemblage du circuit imprim\u00e9<\/strong><\/a>.<\/p>\n
Improper masking can introduce contaminants such as adhesive residues. Use high-quality masking materials and ensure they are clean and compatible with the coating process.<\/p>\n