Paperless digital printing technology editor
Paperless digital printing can consume high-level products that are difficult to consume in traditional printing processes. Regarding natural fabrics such as cotton, since the natural fibers are hydrophilic, and the disperse dyes capable of digital printing are hydrophobic, it is difficult to separate them, so natural fabrics cannot directly stop digital printing. However, digital printing of natural fabrics can be accomplished by the action of a bridging agent. However, there are still some shortcomings in this paper digital printing process. At the same time, the paperless digital printing is to make the dye into a printing paste and then print the pattern on a special substrate. After the substrate is attached to the fabric, it is heated to make the pattern on the substrate being transferred. Printed and fixed on the fabric to get printed waste.
As a novel fabric printing process, the paperless digital printing process has played an important role in textile printing, and its printing products are also popular among consumers.
It does not consume paper, and it does not cause indirect water consumption and water pollution caused by paper consumption, greatly reducing environmental pollution, and conforming to the national sustainable strategic strategy. More critically, the paperless digital printing process saves precious energy (such as water resources) from the source, and nearly 50% of the cost of printing and dyeing consumption is energy consumption. Saving energy means lowering the cost of consumption.
The printed patterns are fine, clear, rich in layers and natural in nature, and are capable of printing products similar to photographs and paintings. First of all, paper digital printing costs paper. For example, printing 1m cloth requires 1m paper, which not only consumes a lot of paper, but also increases the consumption cost, but also indirectly brings water and energy consumption, and will constitute an environment. Contamination; Secondly, ordinary paper digital printing can only print polyester fabrics, and can not be printed on natural fiber fabrics such as pure cotton, so that its application range is greatly limited.
The paperless digital printing process has undergone nearly 10 years of research and development, and under the support of the National “10th Five-Year Plan” 863 Program, after three years of research and discussion, it has achieved a breakthrough in the paperless machine. The bridging agent is usually made of non-toxic and biodegradable raw materials. Before printing, the fabric can be pre-treated to the suspension bridge of silk, cotton and polyester cotton, so that one end of the bridging agent can be separated from the fiber, and the other end can be Disperse dyes separate, which is like a bridge between disperse dyes and natural fibers, thus completing the digital printing of natural fiber fabrics, expanding the range of fabric digital printing, and making the main indicators of printing reach or exceed national standards. Here, special substrates can be repeated. In addition, the plate making fee is relatively expensive, and it cannot meet the needs of individualization, small batches, and multiple varieties.
In order to ensure the industrial consumption of digital printing, the central link in the development of paperless digital printing machine. It must pre-think various possible title titles, difficulties and dispose of it. As usual, the prototype of paperless digital printing machine has been successfully suspended. The commissioning operation has a good effect. It will lay a good foundation for the success of the paperless digital printing process, which also proves that the paperless process industrialization has ideal feasibility and will become a major development direction of digital printing in the future. Its main characteristics are no need to steam solidification, soaping, and washing, no consumption of steam, coal, water, paper in the printing process, digital printing without sewage.
Digital printing features
The production process of digital printing is simply written into a computer by various digital means such as scanning, digital photo, image or computer processing, and then processed by computer color separation printing system, and then passed by dedicated RIP software. The printing system directly prints various special dyes (active, dispersed, acidic main paint) onto various fabrics or other media, and after processing, obtains various highs on various textile fabrics. The precision printing products have the following advantages compared with the traditional printing and dyeing process:
1. The production process of digital printing greatly shortens the original process route, and the ordering speed is fast, and the proofing cost is greatly reduced.
Since the production process of digital printing is free from the process of color separation, production, and web making in the traditional printing process, the production time is greatly shortened. The way to accept the pattern can be through CD, E-mail and other advanced means. The general proofing time is no more than one working day, and the traditional proofing period is generally about one week.
In addition, the cost of proofing is greatly reduced due to the simplification of the process. The shortening of the proofing cycle and the reduction of the proofing cost are under the market competition law of today’s time, and efficiency is the life of the market competition law, which undoubtedly brings more market opportunities to the enterprise.
2. The principle of digital printing technology makes its products break the limitation of traditional production of color and flower length, which can make textile fabrics achieve high-grade printing.
Since the digital printing technology can adopt digital patterns, the color measurement, color matching and printing of the digital printing products can theoretically reach 16.7 million colors, which breaks through the color limitation of the traditional textile printing and dyeing patterns, especially in the color. Digital printing is technically unparalleled in the printing of high-precision patterns such as graduation and moiré. In addition, the traditional printed pattern is often limited by the length of the “lower back”, and the concept of “flower back” may not exist in the process of digital printing, which greatly expands the space of textile pattern design and enhances the grade of the product.
3. The digital printing production truly realizes the production process of small batches and fast reaction, and the production batch is not subject to any restrictions.
Since the digital printing production process is fully computerized digital production, the production flexibility is greatly improved, and some products can even be delivered on the same day, and it is desirable. In addition, due to the application of computer technology, printing a series of patterns with different shades of the same pattern, as well as the designer’s continuous modification of the color of the pattern in the production process has become a major technical advantage of the digital printing production which is different from the traditional printing production.
4. The high-precision printing process eliminates the need for color paste during the printing process.
The use of dyes in the printing process is “distributed as needed” by the computer so that there is no waste of dyeing materials in the printing process, no wastewater is generated, no noise is generated during the printing process controlled by the computer so that the printing process is in progress. No pollution is generated, and the green production process is realized, so that the production of textile printing can be freed from the production process of high energy consumption, high pollution and high noise in the past, and the production process of low energy consumption and pollution is realized, which brings about the production of textile printing and dying. A technological revolution.