What are the precautions when printing portable paper bags?

The first process of making portable paper bag is printing. The quality of printing directly determines whether the handbag is qualified. What are the precautions when printing the portable paper bag?

1. In the printing process of portable paper bags, it is necessary to pay attention to the use of the same ink, and do not mix different types of ink. If the two cannot be dissolved, the quality of the handbag will be affected.

2. When printing, it is necessary to ensure the nature of the ink, avoid direct sunlight, and maintain the indoor temperature, preferably within 10-26 ℃.

3. In the process of printing portable paper bags, if the ink is not often stirred, it is easy to bond, which will affect the overall presentation effect of the handbag. But also pay attention to not too dilute, so that the printed products will have color difference, you can add thickener to adjust properly.

4. In the process of printing, we should also give full play to the role of water, which can effectively control the ink viscosity, and also play the role of balancing pH value. If the pH value is not controlled between 8.5 and 9.5, water or pH stabilizer should be added to adjust it.

5. Portable paper bags are printed on a large scale by machine, and the printing process is very fast, so there are certain requirements for the drying degree of ink. If the drying speed of ink is too slow, it can be properly added with desiccant to improve its drying speed. If printing is carried out before the ink is dry, it is easy to have the situation that the layout is stained and sticky, which will also affect the printing process To overall printing efficiency.

6. After printing, the equipment shall be cleaned. The ink on the equipment shall be cleaned when it is still in viscous state, so as to improve the cleaning speed. If it cannot be cleaned with water, some cleaning agents can be added properly.