The advantages and disadvantages of digital printing fabrics, digital printing is printing using digital technology. Digital printing technology is a high-tech product that integrates machinery and computer electronic information technology into one with the continuous development of computer technology. The emergence and continuous improvement of this technology have brought a new concept to the textile printing and dyeing industry. Its advanced production principles and methods have brought an unprecedented development opportunity to textile printing and dyeing.
Digital printing is divided into digital direct jet printing and digital thermal transfer printing. Digital direct printing means: using a digital printer to directly print out the patterns you need on various materials. For digital thermal transfer printing, it is necessary to print the printed pattern on special paper in advance, and then transfer it to various materials by thermal transfer, such as: T-shirts, underwear, sportswear and other clothing.
The fabric determines the process. At present, there are four main types of digital printing:
(1) Sublimation of polyester fabric: This is the most popular process at present; because of the low investment threshold and simple printing process, general printing factories will be equipped as a supplement to screen printing; only a printer and thermal transfer machine are needed , As well as sublimation ink and thermal transfer paper, thermal transfer is currently developing in the direction of high speed and wide format. For example, Beaver paper's transfer paper can be 3.2 meters wide;
(2) Pure, linen, viscose and other active digital printing; compared with polyester thermal transfer, active digital printing is more cumbersome, requiring pre-treatment, printing, steaming, water-based, qualitative, etc .;
(3) Nylon acid digital printing;
(4) Direct injection printing of paint; such as KORNIT digital direct injection printing machine;
At present, polyester is printed on paper, and then transferred to fabric on heat. Nylon is also acceptable, but the color fastness of several colors is not ideal, especially light. Cotton and silk are usually printed directly on the fabric, and the price is about double that of polyester.
The digital printing of chemical fiber is called dispersion printing, which is to print the pattern on the paper through a digital printing machine and transfer it to the fabric through a high temperature of 180 degrees Celsius. Of course, the temperature of different fabrics is different.
The digital printing of silk, cotton and hemp is called reactive printing, which is directly sprayed on the fabric through the digital printing machine, but this fabric requires a treatment in the early stage, called sizing, or the color cannot be added.
However, the white embryo fabric cannot be processed, and the treatment here refers to: softening agent, waterproof agent, etc. Because these treatments will not dye the fabric. Treatments such as softeners are processed after printing the flowers. This treatment of fabric sizing is a printing process requirement, so it is different from the treatment mentioned above.
In fact, in recent years, the price of digital printing has dropped a lot, from the first out of 100 ~ 200 yuan / square meter to now only need 10 ~ 30 yuan / square processing fee. So basically, conventional fabrics can be used, except for some fabrics with relatively long yarns, which can easily cause nozzle clogging and affect ink absorption.
However, the cost of digital printing is still higher than ordinary printing, which determines that digital printing is more suitable for high-end products and products with high added value. For example, digital printing has just appeared and is suitable for many applications on silk. This is the reason. However, there are also many applications for chemical fiber fabrics. The logic lies in high processing costs & low white embryo prices. In view of the current trend in the fashion industry, chemical fiber fabrics are the most widely used, such as artificial silk fabrics.