Whiteboard paper bleaching of wood pulp as raw material, usually with 100% of the surface layer, the underlying chemical coniferous wood pulp, sulphate core layer USES the hardwood chemical mechanical pulp, pulp by beating to join the calcium carbonate, barium sulfate, such as packing, using AKD neutral heavy sizing, fold in network manufacture paper with pulp papermaking pilot, and the calender, coating processing and become, according to the need, through the embossing processing can be produced with special embossed pattern of paperboard, all with special embossed pattern of white board, can not check the smoothness and whiteness. Besides white, through to the pulp dyeing, also can produce all kinds of light board, then in addition to the whiteness, other technical functions are consistent with the whiteboard paper technology function. Refers to a kind of thickness between paper and cardboard, good texture, crisp, smooth, quantitative between 250 ~ 400 g/m2 of paper products. Main board in three layers, surface and bottom made with academic mixed pulp bleaching, middle made with slag slurry and slurry etc. Surface is white, the bottom is grey to grey white paper: surface and bottom are all white for the white board. Paper surface or bottom to calender coating processing. White board consists of surface layer, core board, the bottom, produce white board surface and underlying use pulp bleaching, the core layer with mechanical pulp, secondary fiber pulp, or some other not drift and half bleached pulp. Products from 3 ~ 6 layers, and even more layers, general surface of the pulp bleaching requires a certain degree of sizing and printing adaptability, white board is a kind of mould machine produce linerboard, intracytoplasmic with packing, quantitative 150 g / ㎡ or higher, uneven levels of whiteboard paper in color, luster, tensile strength, degree of burst is different on the inner quality. White board has the functions of printing, processing, packaging function. Whiteboard paper divided into double white board paper and single white board paper, double-sided white board paper lower raw material the same as the surface, double-sided white board paper is only used when used in high-grade goods packaging, general cartons mostly adopts single white board paper, such as cigarettes, cosmetics, medicines, food, stationery and other commodities bottle. White paper is a kind of positive white and smooth, many for grey board on the back of, the board is mainly used for single color printing is made after cartons used for packaging, or used in the design, handmade products. White paper is magnanimous size is 787 mm * 1092 mm, or designated in accordance with the order contract to produce other specifications or paper rolls. Whiteboard paper because fibrous tissue is average, surface layer has the packing and the composition of the rubber, and the surface coated with certain coating, and through many roller pressure light processing, so the quality of a material of cardboard are close together, also compares the average thickness of, the paper generally is white and smooth, with an average of absorbency and surface off powder with less wool phenomenon, the paper is strong and has a good degree of folding, but its water content is higher, generally around 10%, there is a certain scale, it brings the certain effect to printing. White board paper and coated paper, offset paper, the difference between the halftone paper is paper, degree of heavy, thick paper.
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