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 the dissemination of …

Nov 12, 2025 · Although almost all steps in papermaking have become highly mechanized, the basic process has remained essentially unchanged. First, the fibres are separated and wetted to produce …

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 grinding stone or by …

The extrusion-coating process, a relatively new development in the application of functional coating, has gained major importance in the past 20 years. The process is used to apply polyethylene plastic …

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 pulp …

Pulped forest tree trunks (boles) are by far the predominant source of papermaking fibre. The bole of a tree consists essentially of fibres with a minimum of nonfibrous elements, such as pith and …

The papermaking process begins with sending logs (1) through a barker (2), and grinding them into chips (3). The chips move through a screen (4) and are mixed with chemicals before being fed by a …

Papermaking - Hemp, Cotton, Flax: Since cellulose fibre is a major constituent of the stems of plants, a vast number of plants represent potential sources of paper; many of these have been pulped …

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 create steam to …

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 cooked …