Digital printing technology is a cutting-edge technology in the textile industry that integrates computer data processing, control, precision machinery and fine chemicals. Digital printing has the advantages of no pattern making (mesh), no toning paste, rich colors, good layers, small batch production, fast delivery, water saving, less pollution, low labor intensity, etc. It also caters to contemporary people’s consumption of clothing. The pursuit of new market characteristics of personalization and greenness is attracting more and more attention from enterprises. There are more and more manufacturers of digital printing equipment. Equipment suitable for various types of textiles has appeared one after another. The required consumables, especially The development speed of printing ink is also getting faster and faster. Let us walk into digital printing equipment and learn about the characteristics of different types of digital printing equipment.
Digital direct-injection printing machine
Use the computer and RIP control software to directly print the dye (or paint) ink on the surface of the fabric to form the desired Digital printing machines with pattern and color are called digital direct-injection printing machines. Digital direct-injection printing machines can be used for printing natural fiber fabrics such as cotton, linen, silk, wool, etc., as well as chemical fiber and blended fabrics. The main applied inks are disperse, reactive, acid dyes and coatings.
Digital direct-injection printing machines are widely used. As long as the corresponding dye (or paint) ink is selected according to different fiber fabrics, most textiles that can be colored can be applied to this type of digital printing machine. However, some processing must be done before and after printing, such as sizing the fabric (or coating pre-treatment agent), steaming (or baking), washing, color fixing, finishing, etc.
Digital direct-injection printing machine
Digital paper-jet printing machine
Through computer and RIP control software, A digital printing machine that prints dye ink on the surface of transfer printing paper to form the desired pattern color is called a digital paper jet machine. Digital paper jet machines are mainly used for transfer printing of polyester fabrics, and the inks used are limited to low-temperature disperse dye inks.
Since the surface of the transfer paper is relatively flat, the pattern can be kept white without multiple passes for printing. Therefore, digital paper-jet printing uses very little ink per unit area and the printing speed is faster than direct-jet printing. Much more.
Non-guide belt digital paper jet machine
Figure 4 Guide-type digital paper jet machine
Scanning digital printing machine
Now on the market and Most of the digital printing machines used, whether they are digital direct-jet printing machines or digital paper-jet printing machines, are scanning digital printing machines. Its characteristic is that the nozzle moves back and forth along the weft direction of the fabric (or the width direction of the paper) to print ink on the fabric or paper.
When the scanning digital printing machine performs back and forth printing motion, due to the slight difference in the step speed of the guide belt, there will often be Pass defective products in the weft direction of the fabric, with some colors The pass channel is not very obvious, and some colors are very prominent. If you use multiple passes to print, the pass channel can be masked and eliminated to a certain extent.
3 Pass printing (bottom layer 1 Pass, middle layer 2 Pass, upper layer 3 Pass)
Single -Pass digital printing machine
Single-Pass digital printing machine has a fixed nozzle and a guide belt that drives the fabric (or paper) to run continuously. The ink is controlled by computer software and only uses 1 Pass or single Pass for printing. Create a colorful pattern on a running fabric (or paper). The nozzles of this equipment are all fixed, which can greatly increase the printing speed.
To achieve single-pass printing, the nozzles used must not only have high precision, but also have a sufficient number of nozzles. Therefore, Single-Pass digital printing machines are expensive. At the same time, due to the large number of nozzles, the installation accuracy of the nozzles is also very high. A slight difference in splicing will cause the printed fabric to form a warp pass defective product. The Single-Pass digital printing machine has higher requirements for the smoothness of the fabric surface, so it is more suitable for fabric printing on paper or plain weave.
Scanning Single-Pass digital printing machine
Scanning Single-Pass digital printing machine is a branch of scanning digital printing machine. Its nozzle moves back and forth along the weft direction of the fabric (or paper width direction) like a scanning digital printer. However, due to the relatively high accuracy of the installed nozzle, digital printing can be completed with a single pass. At present, this type of digital printing machine is mostly used in high-speed digital paper printing machines, and there are few reports on its use on fabrics.
Single-Pass and flat (round) screen printing combined machine
When digital printing prints a large area of background color, there is a difference in color saturation and reverse penetration. Waiting for shortcomings, there is no wayProduce special printing fabric effects such as gold and silver powder, pearlescent, glue, etc. In order to create products that combine the rich colors and multiple layers of digital printing with the rich dark colors of traditional printing and special printing, some equipment manufacturers have added several sets of flat screens or screens in front of the Single-Pass digital printing machine. Rotary screen facility for producing large areas of saturated color and special printing effects. The combination of these two facilities can produce more exquisite pattern products than traditional printing and digital printing.
Flat screen + digital printing combined machine
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