Tianjin Carton Factory: Why does the carton board bubble and layer？First, printing field, large amount of ink because the printing effect should be solid and flat，Slight increase in relative printing pressure，The requirements for the interlayer strength of paper are high，The same ink also has higher requirements: printing ink has less viscosity but good transmission，Strong coloring force with a small amount of ink to achieve a flat effect，This reduces the occurrence of foaming and delamination。

  Second, the three rollers of the printing machine make the rubber sheet quickly lose the elastic pressure, the rubber sheet and the liner are not smooth printing surface is uneven, and the printing pressure can only be increased to fill the low place of the rubber。But the higher part when the pressure is increased than the normal pressure。The surface aging of the rubber blanket can not transfer imprinting well, the ink absorption of the surface is reduced, and the pressure of the paper is increased when the surface of the rubber blanket slides, which will cause the paper to layer and blister。