Analysis of Lamination Process for Home-made Thermoplastic Bonding Materials
The technology of laminating of multilayer PCB is very important in the manufacture.The technology of laminating determines quality of PCB.The melting point,fluidity and other properties of home-made thermoplastic bonding material are studied.Compared with the foreign brand,the home-made thermoplastic bonding material has higher melting point,wider melting limit and greater fluidity.According to the laminating results of the foreign product and the temperature control ability of the laminating machine,the laminating parameters of home-made bonding materials are optimized.The warpage degree(≤0.34%),metallized hole quality,interlayer alignment precision(≤79 μm)and insulation resistance after wet and heat aging of the microstrip plate prepared by optimized lamination process can meet the requirements of the corresponding standards.