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Coated Duplex Board Texture Is Relatively Close
Sep 18, 2017

Coated Duplex Board Texture is relatively close

Coated white paper because the fiber structure is relatively uniform, the surface layer with filler and the composition of the compound, and the surface coated with a certain coating, and after the multi-roll calendering, so the cardboard texture is relatively tight, the thickness is relatively uniform, the paper The surface is generally more white and smooth, with a more uniform ink absorption, surface powder and hair loss phenomenon is less, paper is more tough and has a good folding resistance, the water content is generally about 8% , There is a certain degree of flexibility, which will bring a certain impact on the printing. White paper and coated paper, offset paper, letterpress paper is the difference between the paper grams of heavy, the paper is relatively thick. White paper pulp is generally divided into the pulp (surface layer), two, three, four, each layer of paper pulp fiber ratio is different, and each layer of pulp fiber ratio, The quality of paper is different. The first layer for the surface layer of pulp, requiring high brightness, with a certain strength, usually using bleached kraft pulp or with part of the bleached chemical pulp and white paper waste paper pulp; the second layer for the lining, Surface layer and the role of the core layer, also requires a certain degree of whiteness, usually with 100% mechanical wood pulp or light-colored waste paper pulp; the third layer for the core layer, mainly from the filling effect to increase the thickness of cardboard, The use of mixed waste pulp or straw pulp, this layer of the thickest, high-quality cardboard commonly used several slots in several times hanging pulp; the last layer is the bottom, with improved cardboard appearance, improve strength, to prevent curling function, usually With a high rate of pulp or a good waste paper pulp as raw materials, cardboard surface color gray, can also be required to produce other bottom color.

     Printing techniques and precautions for single and double coated whiteboards

         1, the concentration: the concentration of ink in the printing of the amount of ink used less, the ink is better; low concentration of ink in the printing of ink use more, ink light;

2, fineness: the size of the ink particles, the ink fineness is high; ink concentration, print outlets clear, full and powerful; ink fineness is low, print outlets easy hair,

3, viscosity, viscosity, easy to cause ink transmission uneven, net hair and flower and other phenomena; viscosity is small, easy to cause ink emulsification and layout floating dirty;

4, mobility: mobility, will make the graphic level is unknown, ink is not full; mobility is small, so that the spread of ink is not smooth, uneven, easy to cause in the same printing surface before the deep after the light or light Deep after the phenomenon;