Desmear Detailed Process: 0. Drill Process: Drilling is performed to connect layers. Smear occurs within the holes on the base copper. Sweller: Weakens the bond between smear and epoxy resin. Epoxy Etching: Etches the epoxy resin, removing smear from the epoxy resin. Neutralizing: Cleans the interface between layers to provide stability for electrical connections. Swelling: Uses high-temperature..

The substrate electroplating process consists of three stages: desmear, chemical electroplating, and electroplating. In this session, we will focus on the first stage, the desmear process. Desmear: The process of removing smear generated during laser processing to clean the holes. Smear is composed of polymer resin residues and carbides formed due to the heat generated during drilling (CNC or La..