According to the process is mainly divided into pulping and papermaking two processes, pulping is the plant fibre raw materials or recycled waste paper into pulp process, papermaking is the use of appropriate technology will be copied into a variety of different properties of the pulp paper or paperboard process.

According to the different methods of pulping, the most important methods of pulping are sulphate pulping, chemical-mechanical pulping and waste paper pulping. Among them, waste paper pulp production mainly consists of four parts: pulping, screening and purification, washing and concentration, and bleaching.