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Pulp is a fibrous lignocellulosic material prepared by chemically, semi-chemically or mechanically producing cellulosic fibers from wood, fiber crops, waste paper, or rags. Mixed with water and other chemicals or plant-based additives, pulp is the major raw material used in papermaking and the industrial production of other paper products. [1] [2]
Paper pulp, raw material for paper manufacture that contains vegetable, mineral, or man-made fibers. It forms a matted or felted sheet on a screen when moisture is removed. Except for certain special papers (such as asbestos paper), nearly all papers are made of cellulosic (vegetable) fibers.
- The Editors of Encyclopaedia Britannica
Oct 9, 2024 · Pulp is a primary material used in the production of paper and other paper-related products. It is a fibrous substance made from plant-based materials, typically wood, but also from other sources like recycled paper, cotton, or agricultural residues (e.g. hemp, wheat and straw).
Mar 1, 2019 · Pulp is a soft, wet mass of the material which is made by mixing water or liquid chemicals. It is wood-based, clean and biodegradable raw material which is used to make paper, tissue and making them truly sustainable bio products. Fruit pulp is also natural pulp unlike the pulp made in industries.
The pulp is filtered, squeezed, bleached and pounded before other materials, such as chalk or chemicals, are added to change the. opacity. and. absorbency. of the paper – this is called...
Oct 28, 2022 · Pulp is prepared for papermaking machines either mechanically or chemically. The mechanical method (generally used to make lower-grades of paper) is called the groundwood process, because the pulp was originally made by using huge stones to grind up logs. Nowadays, pulp is prepared by giant machines that cut, wash, chop, beat, and blend wood ...
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 passing chips through a mill. The wood fibres are separated and, to a considerable degree, fragmented.
