A few years ago the white paper is made up of MianJiang and each layer bottom slurry dryer machine or slotted in rotary screen net machine manufacture paper with pulp mixing board, but with the papermaking skill to go forward, now mostly use folding machine, rotary screen machine has gradually been screening. Paste is generally divided into MianJiang ( The surface) , lining ( On the second floor) , core plasma ( Three layer) , back pulp ( Four layers) , the layers of pulp fiber ratio is different, and the layers of pulp fiber ratio, and according to the quality of the copy paper. Layer of surface plasma, which requires high whiteness, must have the strength, generally choose bleached sulphate wood pulp or with addition of some chemical straw bleaching waste pulp and paper edge; The second floor for the lining, rise to block the effect of surface layer and core layer, also requires must whiteness, mechanical wood pulp, or light color is commonly used in waste paper pulp; The third layer for core layer, the main filling effect, in order to increase the thickness of the cardboard, to improve the stiffness, generally choose mixed waste pulp or straw, this layer thick, quantitative high board commonly used several net trough points a few back to hang pulp; Layer is the bottom, have improve the look of the board, increase strength, prevent the function of the crimp, generally with high yield pulp or better for the material manufacture paper with pulp and paper pulp board more than bottom color gray, also can produce other base colour as required. Dongguan industrial cardboard composite factory research and development, production and sales of industrial composite board. The main products: industrial cardboard, composite board, double gray cardboard, whole gray paper, gray highlights cardboard, coated paper, kraft paper, board, special paper, industrial cardboard, composite board, etc. Our factory has the abundant technical force and professional production team, has been adhering to the 'do customers suitable products, satisfactory service to clients' spirit of enterprise, won the trust of many customers and support. We will continue to high-quality products, satisfactory service to meet the various needs of customers. Warmly welcome new and old customers calls negotiate!
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