Which steps are used to turn pulp into a finished sheet of paper?

The process of transforming pulp into a finished sheet of paper involves several sequential stages designed to refine, form, and dry the material. While modern machinery has significantly increased efficiency, the fundamental steps remain consistent:1

• Preparation: A suspension of cellulosic fibre is prepared by beating it in water, ensuring the fibres are thoroughly separated and saturated.1
• Formation: The paper stock is filtered onto a woven screen, such as that found in a Fourdrinier machine, to create a matted sheet of fibre.12
• Pressing: The wet sheet is pressed and compacted, often using felts, to squeeze out a large proportion of water and consolidate the structure.12
• Drying: The remaining water is removed through evaporation, typically by passing the sheet through a series of steam-heated cylinders.12
• Finishing: Depending on the requirements, the dry paper may undergo further treatment, such as calendering to compress and smooth the surface, or coating and impregnation to improve specific properties like gloss or water resistance.123