New Trend Of Digital Printing Technology

In recent years, our country's Textile printing and dyeing industry With the rapid development, printing output has also increased at the same time. In 2001, the output of printing and dyeing was 17 billion 830 million meters, of which printing cloth was 4 billion 367 million meters, accounting for 24.41% of the printing and dyeing output, an increase of 11.82%. In 2002, the output of printing and dyeing was 21 billion 87 million meters, an increase of 18.34%, of which 4 billion 986 million of the printing cloth was 4 billion 986 million, an increase of 14.18%, accounting for 23.57% of the printing and dyeing output. In 2003 December, the printing and dyeing output reached 25 billion 132 million meters, an increase of 14.18% over the same period last year, and the printing output has not been announced.

At the same time, the fashion cycle is getting shorter and shorter, the pattern changes faster and faster, the production requirement is higher and higher, the order quantity is smaller and smaller, and the flower type piracy is rampant. Although printing companies have introduced printing methods such as printing CAD system, laser phototypesetting machine, flat screen, ink-jet printing and spray wax making machine to improve the processing process, printing and dyeing factories seem to be impressed by the concept of polluting plants. At the same time, China's exports of printing and dyeing products are also increasingly hindered by the "non trade barriers", including the environment. In terms of current technology, digital printing is the best way to solve many problems in printing.

　　 One Digital printing machine Technical characteristics

The printing process of the digital jet printing system has been fundamentally changed compared with the traditional printing process. The process is simplified to design, printing and post-processing, which saves the manuscript, production (or net, carving), screen mesh (or round net) installation, simplifies the process of equipment debugging and mixing. The simplification of the technological process saves the production equipment such as film making machine (or net making machine, engraving machine), and consumables such as film, screen, roller and so on.

The technical characteristics and advantages are as follows:

1, printing process digitization is seen as income, data storage will never fade.

2, high quality production, high precision, rich color level, can not pirate;

3. The printing process is simple and the preparation time is short.

4, flexible production, suitable for personalized, small batch, effectively reduce inventory;

5, cost is not related to output. Proofing and small batch production are economical.

6, green and environmentally friendly, using less dye as needed.

7. Comparative analysis of circular net, flat screen printing and digital printing.

The development track of 8 and two digital printing technology

Traditional printing is inseparable from the use of flat or circular nets. However, the cost and time spent in plate making can not satisfy the trend of modern printing with small quantities and varieties. Therefore, no printing and no pressure digital printing has been developed. The basic principle is the same as that of inkjet printer.

The inkjet printing technology can be traced back to 1884. The American C.H.Richard put water into the syringe, and the pressure needle flew out of the droplet. If we control the direction of the droplet running, we can form an image on the paper, called the ink jet printing. At that time, because of the problem of needle and ink, the effect was very poor until 1960, and then officially entered the practical stage. Ten years ago, inkjet technology was used for barcode processing or product number printing, called inkjet printer. Digital jet printing is a systematic project. It involves CAD technology, network communication technology, precision machining technology and fine chemical technology. It is the product of integration of information technology and traditional technologies such as machinery, textile and chemical industry. Because digital jet printing involves a lot of computation and control, it can be said that no digital inkjet printing technology is possible without today's high-speed computers. For now, the development of digital jet printing technology is basically in keeping with the computer's ability to work. The development of computer technology is still showing no signs of abating. With the development of computer technology, we can predict that the future digital jet printing technology will also develop rapidly. At the same time, the manufacturing technology of sprinklers also benefits from integrated circuit technology, such as etching and precision assembly. The emergence of modern high frequency and multi nozzle sprinklers proves this point.

In 90s, the popularity of computer technology, the emergence of continuous digital jet printing machine, to 1995, in rugged textiles such as rugs, wall hangings and so on, has been mature. Austria ZIMMER company pioneered the digital jet printing prototype for carpet, with resolution of 9 - 18, using valve injection technology, not using the usual nozzle, and its production speed was very fast, up to 16/min. However, due to its large droplet size and low resolution, it can not be applied to garment fabrics.

In 1995, an on-demand inkjet digital jet printing machine was developed. At that time, the thermal bubble nozzle was adopted, the resolution was 300dpi, and then gradually developed to 600dpi. The 4 color was the main color, and it could basically be applied to fabrics.

In the past 1999-2000 years, the digital jet printing machines using piezoelectric sprinklers have been exhibited in many countries, including Holland, Japan, Switzerland, the United States, Italy and Honghua, China. The resolution can reach 360 ~ 720dpi, 6/h, because the minimum inkjet volume of the piezoelectric nozzle is very small (when the textile is applied to 6P1), the patterns of the products are relatively fine and the colors are more uniform and natural.

At present, all kinds of new digital jet printing machines have appeared, mainly using piezoelectric sprinklers. The highest printing speed has developed from 90 1/h in 2000 to 080 to 150/h in the year of 2000; the development of dyestuffs from 4 colors to 6-8 colors and 2X6 8 colors; the application technology is becoming more and more mature; and the control software function is being perfected gradually.

It can be seen that the development of digital jet printing technology has basically changed from continuous shooting to on-demand jet development, from hot bubble nozzle to piezoelectric nozzle, and from 4 color to 6-8 color. At present, the development of digital printing technology is showing the trend of all kinds of flowers and flowers.

From basic theory to production equipment, from application process to dyestuff development, and equipment, color control methods and software are in full research and development.

In 90s, the number of digital printing products exhibited on the ITMA exhibition was developed from 1 to 5. The exhibition of digital printing products has been developing rapidly at the ITMA exhibition near 5 years. It is reported that there are 23 exhibitors in digital printing on ITMA2003, including equipment, dyestuff, process technology and so on. In particular, the traditional printing machine manufacturers and dyestuff manufacturers have devoted great enthusiasm. For example, STORK and ZIMMER have launched 4 models of digital printing machines, and the top dyestuffs and auxiliaries such as CIBA, BASF and Dystar have made many improvements to their digital printing dyestuffs. Even the Ministry of economic affairs of Taiwan signed a research and development alliance with many enterprises in December 5th last year to develop the technology of "industrial wide digital inkjet printing technology". These international enterprises have developed the digital printing machine with such great efforts, reflecting their judgement on the development direction of textile digital printing.

　　 Three application of digital printing technology and advanced production mode

At present, digital printing technology can not only be applied to personalization, small batch production and printing and dyeing enterprises proofing, but also has entered the field of mass production. In Europe, orders within 500 meters are basically made up of digital printing machines. Many new printing and dyeing enterprises that only use digital printing systems have combined with network design, network production and network sales, and have achieved good economic results. It can be said that we are ushering in a new era of digital textile.

We have assisted many enterprises in Hongkong, Shenzhen and Shanghai to set up a lot of proofing workshops with digital printing, thus improving the overall economic benefits of enterprises. We have set up many factories in Thailand, Malaysia and China to produce batch of digital printing products. Now that we are entering a new economic era, the environment of textile production has changed significantly compared with the traditional economic era in the flourishing development of textile industry in the last century.

In the present and future development prospects, the environment for maintaining mass production of textiles has changed, especially for printed textiles. The current production mode can not meet the requirements of environmental change.

In order to survive and develop in the new environment and win in the global fierce competition, enterprises must change their product manufacturing strategies and seek new modes of production to shorten the time of product listing, improve product quality and reduce product costs, so that customers can meet the needs of customers for customized products at acceptable time and price. Mass customization is proposed for this demand. Mass customization is a new mode of enterprise production and management. Its goal is to produce customized products with large quantities of benefits. This is undoubtedly the ideal mode of production that the manufacturing industry is longing for. Therefore, the concept of mass customization has attracted wide attention. It has become a hot topic in the world in recent years. It has been successfully implemented in some enterprises, and is becoming the mainstream production mode of manufacturing in twenty-first Century.

　　 Mass customization production Under the guidance of systematic thinking, with the view of overall optimization, by fully excavating the potential of enterprises, with the support of standardization technology, computer technology, modern design methodology, concurrent engineering and other technologies and ideas, we finally achieve the process of providing customized products according to the special needs of each customer and the efficiency of mass production. The mass customization production combines the advantages of low cost of mass production and the advantages of customized production to meet the personalized and diversified needs of customers, so that enterprises can adapt to the rapid changes of the market and provide customers with the real needs of products at acceptable time and price. The difference between mass customization and traditional mass production is shown in Table 4.

The goal of mass customization is to customize the production of products with a large number of benefits. For users, the products are customized and personalized. For manufacturing enterprises, the product is mainly produced by mass production.

The emergence and gradual maturity of digital jet printing technology has successfully solved this problem. Only a few primary colors can transfer tens of thousands of colors, so that customers can provide small samples in 24 hours. It is very convenient to organize small batch or even single piece production according to customer needs, and flower color can also be arbitrary. When digital jet printing technology is further integrated with information network technology, it can conduct three-dimensional simulation and customization for customers on the network, so as to achieve a fully personalized business model.