Flexo printing products failure and solution of eight

Eight, water pattern 1, phenomenon: along the direction of the paper, there is a clear ink transfer lines, printing uneven service.
2. Reasons: (1) The substrate has poor surface smoothness and paper lines; (2) The ink has low viscosity, thinness and poor hiding power; (3) Poor ink flowability; (4) Mesh pockets on the surface of the roller Problems (from the screen printings can be seen regularly); (5) Too much ink, the paper can not be transferred, absorbed, deposited on the surface of the substrate; (6) the production of printing plates; (7) roller is dirty .
3, the solution: (1) calendering, improve the smoothness or paper change; (2) adding the original ink, increase the viscosity and color concentration; (3) the use of good ink; (4) manufacturer replacement; (5 ) Change (reduce) the amount of ink or use two passes of printing; (6) change the printing plate; (7) must be clean. â–¡

Author/Li Xinsheng