There are several problems in the application of reactive dye T-shirt direct spraying machine

TShirt Direct Printing MachineCompared with the traditional flat screen and rotary screen printing, the development time of printing is relatively short. There are still some deficiencies in equipment production and process technology applications. In the actual application process, there are still many product quality problems.

1. The color mixing method is unscientific: the traditional T-shirt direct printing machine uses color blocks to adjust the color color by color, and the digital printing uses the four-color principle to mix colors, so the color can only be adjusted on the computer. At present, most digital colorists use photoshop software for color correction. The color correction of photoshop software is mainly for ink and paper in the printing industry, and its parameters are not scientific enough for textiles. In addition, the colorists completely rely on personal experience to perform color correction, which is completely incompatible with the advanced digital printing equipment.

2. Poor color reproducibility: There are two main reasons for poor reproducibility: on the one hand, it is determined by the principle of quarter-colors. The principle of color mixing of quarter-colors is mixed in space by the reflected light of cyan, magenta, and yellow. A secondary or tertiary color is formed. Therefore, as long as any one of the three colors of cyan, magenta, and yellow changes, the mixed color will change greatly.

Digital t-shirt printing machineOn the other hand, it is affected by reactive dyes. Most of the reactive dye inks used in digital printing are high-temperature k-type dyes. These dyes are highly sensitive to humidity, such as the humidity in the air, the humidity in the steamer, and the Fabric moisture content, if one of the factors is inconsistent, will significantly affect the shade of digital printing.

3. The color vividness of the digital t-shirt printing machine is not high enough: if the color of the digital printing is mainly three-color cyan, coffee, dark green, etc., that is to say, a color needs cyan, magenta, yellow, and black. Three or four inks are mixed together. Then, the vividness of the color will deteriorate. This is because the three colors of cyan, magenta, and yellow will produce a certain gray scale when mixed.

Most of the printing colors are three colors, which require three or four inks of cyan, magenta, yellow, and black to be mixed together, which will produce a certain gray scale, and the brightness of the printed product is not good enough.

Clothing digital printing machineIn addition to the poor color vividness caused by color mixing, digital printing with reactive dyes will also cause the color vividness to deteriorate. The reasons are as follows: water absorption of slurry; water absorption of fabrics and dyes; three primary colors Dye shade is not standard; black ink problem with reactive dyes.

Fourth, the ink droplet size cannot be adjusted according to the pattern: Many of the digital printing machines currently on the market can adjust the ink droplet size. But this adjustment is entirely the overall ink drop adjustment, that is, when adjusting the ink droplet printing at 5pl, all nozzles can be supplied at 5pl; when adjusting the ink droplet printing at 50pl, the ink drop size of all nozzles is all 50pl.

Digital printing cannot automatically change the inkjet volume according to the different parts of the block surface and the line according to the different situation of the pattern. In this way, the difference of different parts of the pattern cannot be satisfied, and it will greatly reduce the beauty of the pattern.

5. The sizing system is not perfect: mainly the sizing equipment and auxiliaries must fully meet the needs of digital printing. However, there is no good special equipment for sizing uniformity, weft tilt control, speed, and on-demand sizing; additives are also lacking in personalization.