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Fountain Solution Adjustment And Other Factors

      Fountain solution has a great influence on the stability of packaging and printing quality of offset printing products.Fountain Solution Adjustment And Other Factors

      In order to make the printing ink bright and clear and the blank layout not dirty, the concentration of fountain solution must be reasonably adjusted according to the specific printing conditions to ensure high-quality printing.Fountain Solution Adjustment And Other Factors

Fountain Solution Adjustment And Other Factors

Paper properties and fountain solution concentration:Fountain Solution Adjustment And Other Factors

      When the printing paper is loose or contains sand and dust, due to the high viscosity of printing ink, paper wool and paper powder will often accumulate on the blanket during embossing,Fountain Solution Adjustment And Other Factors

     which is bound to increase the friction of the printing plate film and make the printing plate easy to get dirty. In this case, the concentration of fountain solution should be appropriately increased;Improvement Of Process Quality In Paper And Binding Processing

      When printing tough and white paper, especially coated paper and glass paperboard, the concentration of fountain solution should be appropriately reduced.Improvement Of Process Quality In Paper And Binding Processing

Ink: performance and fountain solution concentration:Improvement Of Process Quality In Paper And Binding Processing

      Due to the different properties of printing ink, its viscosity, fluidity and acid resistance are also different, and the response to the concentration of fountain solution will be different accordingly. Improvement Of Process Quality In Paper And Binding Processing

      Therefore, the concentration of fountain solution should be adjusted as appropriate. Generally speaking, the use principle of fountain solution concentration is: the concentration of magenta ink is greater than that of black ink;Improvement Of Process Quality In Paper And Binding Processing

     The concentration of black ink when printing is greater than that of green ink; The concentration of dark ink is greater than that of light ink.

Dosage of desiccant

When printing laminated plate products, in order to speed up the drying speed of the ink, dry oil should be added to the ink, which also thickens the particles of the ink and increases the viscosity,Fountain Solution Adjustment And Other Factors

      so the fat sensitivity of the blank part of the printing plate increases, so it is easy to have the disadvantage of paste. Based on this situation, the amount of stock solution should be increased appropriately.Fountain Solution Adjustment And Other Factors

Plate and fountain solution concentration:Fountain Solution Adjustment And Other Factors

     The layout structure of printing products is diverse, including field layout, line and screen layout. If the layout is dominated by lines and field negative words, due to its small ink distribution area, the fountain solution concentration should be appropriately increased, Fountain Solution Adjustment And Other Factors

      so that the blank layout is not easy to get dirty: if the whole printing plate is of dot structure, a low concentration fountain solution should be used;Fountain Solution Adjustment And Other Factors

     For printing plates with both field and network, we should take the principle of taking into account all aspects to ensure the stability of printing quality.Fountain Solution Adjustment And Other Factors

Workshop temperature and fountain solution concentration:Fountain Solution Adjustment And Other Factors

      When the printing environment temperature rises, the molecular movement of the material will inevitably accelerate, the ink fluidity will increase, and more free fatty acids can be decomposed, which makes the printing plate easy to get dirty. Therefore, when the temperature is high, the concentration of the fountain solution should be appropriately increased.Fountain Solution Adjustment And Other Factors

Printing speed and fountain solution concentration:Fountain Solution Adjustment And Other Factors

      Because the ink has thixotropic characteristics, when the printing speed is high, the friction coefficient of the ink roller of the printing machine is large, which is easy to heat,Fountain Solution Adjustment And Other Factors

      so that the ink becomes thin, the coloring force decreases, and the ink color becomes light.Fountain Solution Adjustment And Other Factors

     At this time, it is necessary to increase the ink delivery to deepen the printing ink color, so that the printing plate is easy to get dirty. Therefore, when the printing speed is high, the concentration of fountain solution should be appropriately increased.Fountain Solution Adjustment And Other Factors

      In addition to the above, if the printing pressure is high and the texture of blanket and liner is hard, it should also be considered to appropriately increase the concentration of fountain solution to achieve better anti fouling effect.Fountain Solution Adjustment And Other Factors

      The above shows that the concentration of fountain solution should be comprehensively considered according to various specific conditions.Fountain Solution Adjustment And Other Factors

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