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Service > Pulp

  • Pulp

    Constituting the main component of the pulp cellulose fibers, in addition to varying degrees of hemicellulose, lignin, resins, pigments, pectin, and ash and other substances. Wherein the cellulose and hemicellulose are the basic components of pulp, and the removal of the other ingredients are listed.
    Mechanical pulp (MECHANICALWOOD-PULP) mechanical pulp mill, also known as wood pulp, is the use of solutions of pulp fibers mechanically grinding raw materials. It occupies an important position in the paper industry. Its low production cost, the production process is simple, a strong ink absorbing paper, opacity, paper, soft and smooth. Suitable for printing on request. However, since the fiber is short, a high content of non-cellulosic components, into the paper strength is low. In addition, as the wood lignin and other non-cellulosic majority has not been removed, with its production of paper easy to turn yellow and brittle hair, not long-term preservation. Mechanical pulp mechanical pulp usually white and brown two mechanical pulp. White mechanical pulp is mainly used for the production of newsprint, can also be blended with other pulp papermaking and printing paper and writing paper; brown mechanical pulp used for the production of packaging paper and cardboard, especially for industrial use cardboard. 2. kraft pulp (SULPHATEWOODPULP) kraft pulp is a mixture of sodium hydroxide and sodium sulfide cooking agent. In the cooking process, because the role of relatively mild liquid, fiber erosion were not strong, so tough and powerful, made of paper, its folding, burst and tear strength is excellent. It can generally be divided into two kinds of bleached and unbleached. Unbleached kraft pulp for manufacturing kraft sack paper, kraft liner board and general wrapping paper and cardboard. Bleached kraft pulp for manufacturing high-grade printing paper, drawing paper, offset paper and writing paper. 3. sulfite pulp (SULPHITEWOODPULP) is a mixture of sulfite pulp sulfite and bisulfite for cooking agent. The long fiber pulp, soft nature, good toughness, strength, easy bleaching, and has an excellent ability intertwined. Can be classified according to their degree of refined unbleached, semi-bleached and bleached three. Because it contains small amounts of unbleached pulp lignin and colored impurities, so yellow, fibers harder, and more for papermaking moderate printing paper, wrapping paper thin and translucent paper and greaseproof paper. Semi-bleached pulp contains large amounts of pentosan, so papermaking transparent tracing paper and vellum and so on. Bleached pulp fiber white, pure and soft texture, but because after the bleaching treatment, the fiber strength is lower than unbleached pulp. Such multi-pulp for papermaking various senior paper. 4. paper pulp (WASTEPAPERPULP) paper pulp takes advantage of the used paper or printing paper cut edges under as raw materials, machinery and power stirred and bleached or deinking made of. Fiber strength properties of paper and pulp, waste paper pulp is the type used in the decision. But once again suffer because of the fiber liquid erosion, or damage by mechanical force, so worse than the original fiber properties. According to the original level of quality paper pulp waste paper were used for papermaking printing paper, writing paper, paperboard and paper low profile. In addition to the introduction of several pulp, there are straw pulp, reed pulp, bagasse pulp, pulp, cotton pulp, hemp pulp and synthetic pulp.

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