Papermaking, formation of a matted or felted sheet, usually of cellulose fibers, from water suspension on a wire screen. Paper is the basic material used for written communication and …

Papermaking - Pulping, Refining, Bleaching: Mechanical or groundwood pulp is made by subjecting wood to an abrading action, either by pressing the wood against a revolving …

Jan 30, 2026 · Paper, matted or felted sheet, usually of cellulose fibers, formed on a wire screen from water suspension. Although wood has become the major source of fiber for papermaking, …

Papermaking - Machines, Formation, Sheet: In a paper machine, interrelated mechanisms operating in unison receive paper stock from the beater, form it into a sheet of the desired …

Kraft process, (from German kraft, “strong”), chemical method for the production of wood pulp that employs a solution of caustic soda and sodium sulfide as the liquor in which the pulpwood is …

Papermaking - Bleaching, Washing, Drying: The use of calcium and sodium hypochlorites to bleach paper stock dates from the beginning of the 19th century. In the early days of sulfite …

The particular chemical included in the liquor depends on the wood species and the paper product required. Because this process does not completely dissolve undesired substances in the …

Jan 1, 2026 · Cai Lun, Chinese court official who is traditionally credited with the invention of paper. About the year 105 he conceived of the idea of forming sheets of paper from the …

Sulfite process, chemical process for the manufacture of paper pulp that employs an acid bisulfite solution to soften the wood material by removing the lignin from the cellulose. Sulfite cooking …

The paper making process is a fairly closed loop system, where almost all of the materials used can be recycled and reused. Tree bark and other wood waste is used in boilers at the mill to …