The notes of adhesive label printing. |
Views：581time Date：2017/10/10 |
| In the process of printing, the quality problems often occur are: sticker, label material, dirt on the back, printing of ink, flying ink and static electricity, etc.. These faults affect the quality of printing and must take corresponding measures to eliminate them. 1. stickers printing ink ink: ink fine droplets, flying in the air the phenomenon called "flying", also called ink fog, adhesive label in high speed rotary letterpress printing machine the most common faults. To alleviate the "flying ink" phenomenon, you can increase the humidity of the printing workshop, the use of conductive ink, such as water-based ink. 2., stickers ink printing: ink printing is refers to the self-adhesive label on the back can see the phenomenon of positive imprinting. To prevent the printing of ink, you can choose to tighten the paper printing, can also increase the viscosity of the ink, appropriate to reduce printing pressure. 3. stickers label materials: printed on the sticker on the back rubbed against dirty on the ink stick in the back of a printed sheet, causing the back rub dirty. To prevent the back rub dirty, usually in the printing machine receiving dusting device install paper, the calcium carbonate fine particles dispersed in between the sheets. In addition, accelerate ink drying, reduce sheet stacking height, the sheet placed between the ink absorption good paper can inhibit the dirty phenomenon. 4., self-adhesive stickers static: printing process, self-adhesive labels are not easy to separate, the paper on the table is not uniform, or paper on the paper skew and overprinter, etc., are likely to be caused by static electricity. The elimination of printing electrostatic, usually in the printing press installed static eliminator, so that the printing machine around the air ionization, so that the paper on the positive and negative static electricity neutralization. You can also spray the amount of water mist on the top of the printing press or the top of the impression roller to eliminate the static electricity on the paper. In addition, increasing the humidity in the printing workshop is good for eliminating the static electricity. |
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