你是问 Conformal coating
中文解释是“保型电镀涂层工艺”,广泛应用于工业和民用金属或复合材料的表面处理和喷漆,具有防潮、防尘、抗化学腐蚀、和抗温度大幅变化对材料的影响.
formal coating 未见有专门术语解释.谢谢您的回答。我这里说的是电路板生产时，在生产线上做的一道工序，不清楚是指刷三防漆（绝缘、防潮、防漏电），还是对关键器件的引脚涂刷绝缘胶。电路板（PCB）的 formal coating 也是指 conformal coating: Conformal coatings are designed to protect printed circuit boards and related equipment from their environment. Typically applied at 25-75μm, these coatings ‘conform’ to the contours of the board allowing for excellent protection and coverage, ultimately extending the working life of the PCB.目前有四种涂层材料和工艺：AFA —— Aromatic Free Acrylic CoatingAPL —— Acrylic Protective LacquerHPA —— High Performance AcrylicTFA —— Toluene Free Acrylic