(1) The viscosity of the ink is too large, which causes patterns on the plate surface. If the viscosity of the ink is too large, in addition to making the transfer of the imprint difficult, it will also destroy the condition of the middle of the ink layer, which will make the remaining ink layer on the plate surface insufficient, and the pattern will be caused by the exposed parts of the graphics and text. Treatment method: add some debonding agent to reduce the viscosity of the ink, but do not increase the fluidity of the ink too much. (2) The viscosity of the ink is too low, which makes the printing plate paste, and the ink with low viscosity is easy to emulsify, causing scumming, the ink cannot be transferred normally, and the pigment particles are gradually accumulated on the ink roller, the printing plate and the blanket. When the pigment particles accumulate to a certain thickness on the printing plate, it will cause a paste plate, sometimes due to insufficient ink layer on the plate surface to cause the flower plate. Treatment method: add some No. 0 adjusting ink appropriately. (3) Excessive ink fluidity will cause dot expansion and insufficient ink fluidity will cause the printing plate to produce patterns. If the ink fluidity is too large, the ink layer will spread easily, which will expand the geometric size of the imprint, and the dots will not be copied correctly. It is often unevenly distributed, resulting in insufficient ink on the printing plate and the printing plate. Treatment method: different ink adjustment oils can be selected according to the fluidity of the ink. We could make different size of Color Packaging Box and Paper Inner Box base on your design.we aer the China Hang Tag ,Printing Label,Cardboard Boxes,Paper Bags Manufacturer and Supplier. Paper Inner Box Hang Tag,Printing Label,Cardboard Boxes,Paper Bags Manufacturer and Supplier. Xing Hua Printing Factory , https://www.xinghuaprint.com