Solvent processes are low temperature processing, the process material is shellac first cleaned with alcohol dissolves, by filtration or centrifugation to remove impurities, and then through the evaporation of alcohol by distillation under reduced pressure, and recovering the solvent in the evaporator, and finally pressed into a sheet, the production process does not require high temperature and pressure is applied to the raw material itself, and some characteristics of the material maintained, thus ensuring the molecular structure of the finished product from damage shellac, it has strong adhesions and thermal advantages of long life. The process produced shellac quality, adequate protection of the interests of its clients.