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papermaking
Keywords:
S series glue enzyme is the use of biotechnology to directly process the raw starch to meet the requirements of paper surface glue, can replace the surface glue starch widely used in the paper industry.
D series pulping enzymes is a special compound enzyme preparation for pulp, which is used for pre-grinding pretreatment to reduce the grinding time, reduce the energy consumption, modify the fiber under appropriate conditions, improve the grinding performance to grind the pulp, make it fully absorb water and swell improve the fiber binding force, and improve the paper strength.
Keywords:
Enzymes are sustainable biocatalysts used to optimize pulp and paper processes. Xylanases reduce refining energy and aid bio-bleaching, while cellulases improve fiber modification. Lipases/amylases enhance deinking in recycled paper, and pectinases assist in non-wood pulping.
Formamidine Sulphinic Acid (FAS), also called Thiourea Dioxide, is a chlorine-free reducing bleach used in papermaking to enhance brightness, especially for mechanical (TMP, CTMP) and recycled pulp. Unlike oxidative agents (e.g., hydrogen peroxide), FAS works by reducing chromophores, gently removing color without damaging fibers. It operates effectively in neutral to slightly alkaline conditions (pH 6–9) and is often used in the final bleaching stage for deinked recycled pulp or high-yield mechanical pulps.
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