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Wood and other plant materials used to make pulp contain three main components (apart from water): cellulose fibers (desired for papermaking), lignin (a three-dimensional polymer that binds the cellulose fibres together) and hemicelluloses (shorter branched carbohydrate polymers).
Pulp is made from wood and the sawdust from our sawmills and plywood mills. The process for both hardwood and softwood pulp is nearly identical, the main differences being the structure of the wood, and some slight differences in the amounts of chemicals used during the bleaching process.
The more commonly used method is chemical pulping, also known as “kraft." Chemicals are used to separate lignin from the cellulose fibers, leaving a pulp mixture that can make stronger papers. Depending on what type of paper is desired, the pulp mixture might need to be bleached to create whiter
Oct 28, 2022 · How is paper made? Most paper pulp is made from trees (mainly fast-growing, evergreen conifers), though it can also be made from bamboo, cotton, hemp, jute, and a wide range of other plant materials. Smooth papers used for magazines or packaging often have materials such as china clay added so they print with a more colorful, glossy finish.
Pulp is made from breaking down the fibrous part of plants, primarily trees or recycled paper, and refers to the main ingredient in the papermaking process. Pulp made from trees (wood fiber) is the most common source of fiber for papermaking and the base for many paper and wood products.
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.
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.
