One-side coated white board paper is a kind of positive white and smooth, more for grey board on the back, so also known as Manila board or grey coated white board paper, can also be referred to as grey, white, white, white board paper, white paper board, etc. This kind of board is mainly used in the paper box for packaging. The size of the flat white board is 787mm * 1092mm, the size of the large scale is 889mm * 1194mm, the door width of the rollers is 787mm, 889mm, 1092mm, 1194mm, and other paper can be arranged according to the customer's requirements.
Because fibrous tissue is evenly coated white board paper, surface layer has the packing and the composition of the rubber, and the surface coated with certain coating, and through multiple roll calender processing, so the quality of a material of cardboard more closely, thickness is uniform, the paper generally is white and smooth, with a uniform ink absorbency, surface powder with less wool phenomenon, the paper is strong and has a good degree of folding, its moisture content is in commonly 8%, there is a certain scale, it brings the certain effect to printing. The difference between the white board and the coated paper, the offset paper and the letter-paper is that the paper is heavy and the paper is thick. Whiteboard paper pulp generally divided into MianJiang (surface), two, three, four layers, each layer of the pulp fiber ratio is different, and the layers of pulp fiber ratio, and according to the quality of the copy paper. The first layer is the surface slurry, which requires high whiteness, which has certain strength, usually bleached sulphate wood pulp or mixed with partial bleaching chemical straw pulp and white paper pulp; The second layer is the lining layer, which ACTS as the insulating layer and the core layer. It also requires a certain whiteness, usually with 100% mechanical wood pulp or light colored 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 USES the mixed waste pulp or straw, this layer is the most thick, quantitative high board commonly used several net trough points several times to hang pulp; The last layer is the bottom, have improve the look of the board, increase strength, prevent curl functions, usually with high rate pulp or better as raw material to manufacture paper with pulp and paper pulp board more than bottom color gray, can also according to the requirements in the production of other background color.