when selecting materials for water transfer printing

Water transfer printing is a special new printing technology. After treatment, the quality of the water transfer printing film is stable, the pictures are clear and realistic, the color is fresh and beautiful, and the adhesion is good. The main precautions for selecting materials for water transfer printing processing are as follows:

　　1. The selection of the four mesh frames in the screen frame is necessary to have a metal structure, but it may not necessarily be the same.

　　2. The screen is the most suitable for selection with high precision, dyed silk screen anti halo, and its size is confirmed based on the magnification of the printed picture.

　　3. Four versions of tension and in the network, it is necessary to perform on the same device or under the same conditions, and you can choose four methods of net stretching, so it can ensure accurate tension net structure protocol, four pieces. In other tension and good networks, it is necessary to place it at 1? For 2 days, then apply to ensure sufficient relaxation.

　　4. If you are using the direct method to make the template, then remember to apply a uniform coating thickness of the photosensitive adhesive. Remember to keep the pumping gas, light source, exposure time, and development control in the same printing cascade. It is necessary to save the template and apply it under specific conditions.

How to distinguish the quality of color printing ink in water transfer printing?

　　The two most important standards for identifying color printing inks in water transfer printing are as follows:

　　（1） It is the purity of the ink that determines the color saturation and degree of restoration of the image after transfer printing.

　　（2） The smoothness of ink refers to the value of the length and area of a single print. The smoothness determines the printing quality and the continuous length of the printing paper (especially when printing thermal transfer paper such as clothing and shoe materials, there should be no broken or flying lines, which is not allowed according to production requirements).

　　So, good ink is essential for ensuring purity and smoothness, which is also the most important indicator for distinguishing between good and bad ink. According to the production standards for inkjet printing ink, the particle size of ink dyes should generally not exceed 0.1 micrometers. If this standard is lower, it is easy to cause printer blockage, and the ink quality will be greatly reduced.

　　In addition to the above two important indicators, there is also the problem of dye precipitation that affects the quality of ink, which can seriously affect the quality and stability of ink. If there is sedimentation in the ink, it must be shaken well before use. In addition, there is almost no color difference problem when printing with high-quality ink, but poor quality ink often causes color difference problems.