哑光黑色阻焊剂低压喷涂技术研究

Study on low pressure spraying technology of matte black solder mask

哑光黑色阻焊油墨制作工艺一般采用传统网版印刷和双机台作业方式,因此自动化程度低、生产效率慢,同时由于哑光黑色油墨所加入的色粉遮光性强,对全自动影像对位(CCD)曝光机的光源会产生一定遮蔽效果,光源出现无法识别光标点导致“拒曝”问题。通过对传统哑光黑色油墨的配方改良验证与分析,以及使用低压喷涂设备,将油墨均匀的涂布在基板表面,最终通过客户端上件测试。

The matte black ink PCB solder mask process generally adopts traditional screen printing production and double machine operation, thus the low automatic degree and slow production efficiency are common. And because the matte black ink contains the strong shading toner, the automatic image registration(CCD)light source will produce camouflage effect, and is unable to identify the point led to refused to expose. Through the traditional matte black ink formulations improvement validation and analysis, and by the use of low pressure spraying equipment, the ink is evenly coated on the PCB surface and finally validated from the client.