The finishing part of the paper machine is a complete set of equipment that enables the pulp to form a paper web. It is generally called the paper machine, including the main machine such as headbox, mesh department, press department, drying cadre, calender, coiler and transmission department, as well as auxiliary systems such as steam, water, vacuum, lubrication and heat recovery.

　　Multi process treatment is used to obtain good surface quality. Most paper is calendered by a mechanical calender after the paper machine to make the paper surface flat and consistent. The mechanical calender is made of several cold cast iron rollers, which flatten the paper surface with the self weight of each roller or another pressure. If a higher surface smoothness is required, it shall be calendered with a super calender. It is generally composed of paper meal roll and cold cast iron roll. According to different application requirements, some varieties need surface sizing to improve surface quality; Some have to go through surface coating to improve the appearance quality or printing quality. Surface sizing and coating can be processed outside the paper machine through the sizing machine and coating machine, or the sizing machine and coating equipment can be combined in the paper machine for in machine processing.