First, the phenomenon of ink powdering
Ink pulverization refers to the fact that after the semi-finished product or the finished product is dried, the ink layer can not be well combined with the paper surface, and the surface of the pigment particles will fall off like a powder. This pulverization phenomenon is related to the properties of paper and ink, in addition to the high acidity of the water bucket medicine and the presence of too much surface active material.
Second, the common causes of ink powder
(1) The adhesive force of the ink is too small and the surface of the paper is relatively smooth, so that the ink layer and the paper surface cannot be well combined, resulting in the ink layer being wiped off from the paper surface.
(2) The ink is too thin, the linking material is easily absorbed by the paper, a large amount of the linking material penetrates into the paper, which promotes the separation of the linking material and the pigment in the ink, causing the pigment particles to float on the paper, and the pigment loses the linking material. Adhesion, the degree of its connection is reduced, and it does not adhere well to the paper surface, resulting in falling off.
(3) The used ink is emulsified seriously, which not only reduces the viscosity, drying speed, and increases the penetration. More importantly, the emulsified ink conjunctiva does not combine well with the paper surface, the adhesion is poor, and the film is firm. Very poor, slight rubbing will cause the film to break and fall off. (4) Coated paper is made by coating the base paper. The paint and base paper have strong absorption, and the paper is thicker, can absorb a large amount of linking material, and the coating surface is smooth and the pores are very fine. It is possible to inhale the pigment together and act as a filter layer, causing the pigment particles to float on the paper and fall out of the package due to lack of binder.
Third, ink powder phenomenon processing method
(1) No printing paper with strong absorptivity (absorbency less than 30 seconds), otherwise it must be printed with resin ink with strong adhesion.
(2) Add appropriate amount of No. 0 varnish or adhesive to enhance the adhesion of the ink to the paper surface.
(3) Control the emulsification of the ink, and the water consumption of the layout should be small. The PH value of the water bucket solution is often measured and adjusted to the required value. The dry oil is added with the use, and the ink emulsification is reduced so that the drying time can be grasped.
(4) Fine products that have been pulverized can be treated by glazing or filming.
Ink pulverization refers to the fact that after the semi-finished product or the finished product is dried, the ink layer can not be well combined with the paper surface, and the surface of the pigment particles will fall off like a powder. This pulverization phenomenon is related to the properties of paper and ink, in addition to the high acidity of the water bucket medicine and the presence of too much surface active material.
Second, the common causes of ink powder
(1) The adhesive force of the ink is too small and the surface of the paper is relatively smooth, so that the ink layer and the paper surface cannot be well combined, resulting in the ink layer being wiped off from the paper surface.
(2) The ink is too thin, the linking material is easily absorbed by the paper, a large amount of the linking material penetrates into the paper, which promotes the separation of the linking material and the pigment in the ink, causing the pigment particles to float on the paper, and the pigment loses the linking material. Adhesion, the degree of its connection is reduced, and it does not adhere well to the paper surface, resulting in falling off.
(3) The used ink is emulsified seriously, which not only reduces the viscosity, drying speed, and increases the penetration. More importantly, the emulsified ink conjunctiva does not combine well with the paper surface, the adhesion is poor, and the film is firm. Very poor, slight rubbing will cause the film to break and fall off. (4) Coated paper is made by coating the base paper. The paint and base paper have strong absorption, and the paper is thicker, can absorb a large amount of linking material, and the coating surface is smooth and the pores are very fine. It is possible to inhale the pigment together and act as a filter layer, causing the pigment particles to float on the paper and fall out of the package due to lack of binder.
Third, ink powder phenomenon processing method
(1) No printing paper with strong absorptivity (absorbency less than 30 seconds), otherwise it must be printed with resin ink with strong adhesion.
(2) Add appropriate amount of No. 0 varnish or adhesive to enhance the adhesion of the ink to the paper surface.
(3) Control the emulsification of the ink, and the water consumption of the layout should be small. The PH value of the water bucket solution is often measured and adjusted to the required value. The dry oil is added with the use, and the ink emulsification is reduced so that the drying time can be grasped.
(4) Fine products that have been pulverized can be treated by glazing or filming.
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