As an emerging printing method, digital printing technology meets the increasingly diverse mid-to-high end demand in the market with its high efficiency, low proofing cost, good printing effect and less pollution, which brings unprecedented development opportunities to the textile printing and dyeing industry. Digital printing is free of plate making and pollution-free. It has obvious advantages in terms of layering and convenience, and is gradually being accepted by the market.
Du Yuzhou, president of China Textile Industry Association, said at the National Textile Science and Technology Conference that during the " Twelfth Five-Year Plan" period, the textile industry will break through 50 key technologies covering new fields of spinning, weaving, printing and dyeing, and high-performance industrial textile processing. Digital printing technology will play an increasingly important role in this technology wave.
The industrialization era of digital printing is just around the corner. Dr. Xu Songyu from the Institute of Industrial Economics of Zhejiang Province once said: “ Digital printing equipment is revolutionary for the textile industry. †When the reporter visited the printing enterprises in Zhejiang, many companies have paid close attention to the industrial application trend of digital printing technology. I hope to understand the industrialization trend of digital printing. The traditional printing enterprises are seeking a way out for the upgrade and transformation, and the digital printing industrialization will bring the company a spring breeze.
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From proofing to industrialization
Digital inkjet printing is ready to go
At present, the digital inkjet printing market is getting more and more prosperous. Even many Taobao sellers use " digital printing " as a keyword for clothing products.
Li Li, deputy general manager of Hangzhou Honghua Digital Technology Co., Ltd. said: “The fashion cycle is shortened now, and the pattern changes are numerous. More and more consumers are pursuing unique fabric patterns. In order to meet market demand, fabric manufacturers have developed A large number of patterns provide a choice for clothing brands, which allows the printing factory to take orders, reduce the size and increase the variety. "
The traditional printing process consumes the cost and time of the plate making, and the small-volume order increases the cost of the fabric using the traditional printing process, and the difficulty of taking orders increases. Digital inkjet printing is not only accurate in color, but also has a natural and smooth color transition. Although it is more expensive than ordinary flat screen printing, it is worthwhile for fashion-conscious consumers.
The popularity of digital printing is closely related to the fashion of fashion, and the market for digital inkjet printing is also here.
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Wool fabric printing faces better opportunities
Expert Committee Member of China's Printing and Dyeing Industry Expert Committee
Along with the rapid development of the domestic economy, people's living standards have improved significantly. Consumers who focus on quality of life have begun to pay attention to wool textiles, which brings great opportunities for digital printing of wool fabrics. Digital printing is suitable for high-grade wool fabrics. High-grade wool fabrics are characterized by small batch size, exquisite patterns and strong fashion sense.
It should be noted that the fabric preparation of the digital printing of wool fabrics is generally subjected to chlorination treatment, which can significantly improve the color depth, vividness and sharpness of the printing pattern. In addition, factors such as paste, moisture absorbent, and acid release agent in the pretreatment process have a significant effect on the printing effect. The digital printing of wool fabrics should also be considered in combination with the entire dyeing and finishing process to achieve a good printing effect without affecting the high-end style of wool fabrics.
The ink used for digital jet printing of wool fabrics is mainly acid ink or reactive ink produced by some large foreign companies. The color depth, color light and color fastness of ink are very important. In addition, the adaptability of the nozzle is the most critical, otherwise the ink is blocked. It will be a very troublesome thing.
The digital printing of wool fabrics is now quietly emerging in the industry, and it is also an important direction for the development of digital printing technology after silk. Print out personalized textile products
Digital Technology Center, Zhejiang Modern Textile Industry Research Institute
The traditional printing process is long, not only the process is complicated, the cycle is long, and the quality of the network directly affects the quality of the printing. In today's textile market, the demand for products is becoming more diversified and individualized. Manufacturers face the requirements of small batches, multiple varieties and short cycles. If digital printing technology is adopted, traditional craftsmanship, production and production can be omitted. A series of processes and equipment such as nets and engravings can be used to distribute thousands of colors in just a few primary colors, and provide samples to customers in a timely manner, which facilitates the organization of small batches and even single-piece production.
Printing companies have introduced digital methods such as printing CAD system, laser imagesetter, flat screen inkjet, rotary screen inkjet, and waxing machine to improve the processing process in traditional printing methods, but the cost of traditional printing platemaking and Time, no matter how difficult it is, it is difficult to meet the requirements of modern printing trends of small batches and varieties. Digital printing has an advantage in this regard.
The Digital Technology Center of Zhejiang Modern Textile Industry Research Institute is an operating entity engaged in the production, application, research, promotion and related services of digital printing. It has imported high-speed digital inkjet printing machine.
We are optimistic about the development of digital printing in the printing industry in the future. Speed ​​is not as fast as possible
Senior Engineer, Jiangsu Textile Industry Design and Research Institute Yang Puxian
Since the digital printing is progressive inkjet, the speed is not as good as that of a rotary screen or a flat screen. If the speed of the equipment is increased, the precision of the printed product will be compromised, which will affect the quality of the product. In particular, some rough texture and thicker base fabrics require ink penetration, which affects the printing effect at a faster speed, and the printing speed of the more complex patterns is relatively slower. Equipment production is slow, productivity is relatively low, and production time is relatively long, so the depreciation of machinery and equipment will be greatly increased, which is a must-cost.
The quality and price of ink is also a key factor in the industrialization of digital printing. The coordination of ink and digital printing color matching software is a key. What kind of ink and matching software is used in any brand model, which involves compatibility. The price of ink is directly related to the cost of digital printing.
At present, the research of digital inkjet printing technology mainly focuses on the following aspects: first, the development of inkjet printing machine; second, the development of intelligent CAD system and related software; third, the development of ink. For the first and second aspects, foreign countries have been extensively researched and matured. For the third point, domestic companies are still working with developed countries to study ink formulations suitable for various types of fibers and fabrics. The existing digital inkjet printing inks in foreign countries are expensive, and they need to be debugged together with domestic digital printing machines.
Promote the development of wool fabrics
Professor of Zhejiang University of Technology, Chen Weiguo
As a high-end apparel fabric, printed wool fabrics are mainly produced in response to the needs of fashion apparel, and the pattern changes are more varied to reflect the individualized requirements of small-volume production of fashion.
At present, the most advanced screen printing machine is suitable for high-speed operation of high-yield production. For small-scale wool fabric printing processing, it is necessary to go through the process of pattern design, drafting, net making, etc., not only processing time is long, but also cost Not low. At the same time, the general printing enterprises do not have the conditions for finishing the wool fabric, which limits the production of printed wool fabrics. In addition, in the screen printing process, to achieve the accuracy of the multi-color pattern, it is possible to cause fabric waste, which is more serious in complex printing techniques, such as discharge printing. Digital printing solves these problems in traditional wool printing and promotes the quality of printed wool fabrics. Break through the pattern color limit
Hangzhou Open Source Computer Technology Co., Ltd. Marketing Department Xu Changyuan
The production process of digital printing has been freed from the traditional printing process of color separation, plate making and web making in the production process, thus greatly shortening the production time. 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 some even only a few hours, while the traditional proofing time is usually about one week. The shortening of the proofing cycle and the reduction of the proofing cost have brought more market opportunities to the company. Choose any pattern, regardless of the pattern type and the number of sets of colors, the printed color can almost reproduce any color in nature. Digital printing technology for designers can fully realize their own design ideas.
Digital printing technology can use digital patterns, color measurement, color matching, and printing through computer, so that the color of digital printing products can theoretically reach 16.7 million, breaking through the color limit of traditional textile printing and dyeing patterns, especially in the color gradient. Digital printing is more technically advantageous in the printing of high-precision patterns such as moiré. The added value of fabrics and garments produced by digital printing technology is also relatively high. Several issues should be noted
General Manager of Jinshu Silk Printing and Dyeing Co., Ltd.
Digital inkjet printing technology has received more and more attention from people and has broad prospects for development, but there are several issues to be aware of. The first is the widespread production status of the company, and the printing speed is slow. In general, traditional printing factories print at speeds of a few meters to tens of meters per minute, but digital inkjet printing takes a few minutes to print one meter and prints at a lower speed. Secondly, the digital printing machine is more " squeaky " , the daily maintenance cost is high, and the nozzle life problem is the key. It is very common to replace a nozzle with a price of 10,000 yuan. Third, digital inkjet printed fabrics require pre-printing treatment to achieve the requirements of inkjet printing, which requires skilled printing technicians. In short, the development of digital inkjet printing is still the production cost, which will gradually decrease with the popularity of digital printing, but the cost of digital printing will be several times that of traditional printing. This is the characteristic of digital printing. decided.
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Honghua: providing digital printing overall solution
“ Honghua started its textile printing. As early as 1997 , Honghua developed and promoted digital jet printing machine and computer integrated netting and proofing system. In 2000 , Honghua DPM 1800A digital jet printing system passed the national technical appraisal. in 2006, Honghua digital jet printing machine was named China textile industry Association for science and technology award, in June 2007 Honghua digital VEGA digital printing system developed by the State Science and technology Invention in 2009 to Honghua digital is The National Digital Printing Engineering Technology Research Center was officially established, which fully illustrates Honghua's position in the field of digital printing. " Li Li, deputy general manager of Hangzhou Honghua Digital Technology Co., Ltd. said.
Based on global quality
In 2008 , Honghua digital application research results, research and development and production of the first VEGA series of high-speed textile digital jet printing system that can be used in mass production . VEGA series high-speed tape guide combines digital and information technology into one. At the same time, it is equipped with the most advanced industrial-grade nozzles in the world to ensure the continuous production capacity of the equipment. It is the first high-speed digital printing machine in China. The advantages of realistic pattern quality, perfect performance, high stability and low cost make VEGA series high-speed tape guides adapt to the production requirements in various environments. It can be applied to all fields of textile printing, and is committed to providing high-efficiency and high-quality products. Digital printing and dyeing program. At the same time, it also perfectly realizes the characteristics of environmental protection and energy saving such as low energy consumption and zero emission of digital printing, and truly implements the concept of “ energy saving and emission reduction †in the field of textile printing and dyeing. The emergence of VEGA series high-speed tape guides has filled many gaps in the domestic textile printing and dyeing field.
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Open source: Rainbow helps companies stand out
Hangzhou Open Source Computer Technology Co., Ltd. has long been committed to the development of textile printing and dyeing automation, information technology and products. Its first automatic computerized pulping system and flat / round net spray wax netting system won the second prize of National Science and Technology Progress Award. And the second prize of China Textile Science and Technology Progress, has a reputation in the printing and dyeing industry.
With the strong strength in the field of automatic control, especially the automatic control of the nozzle, the Rainbow High Speed ​​Inkjet Digital Printing Machine independently developed by Hangzhou Kaiyuan is the most promising star product in the domestic high-speed inkjet printing machine. " Rainbow high-speed inkjet digital printing machine has the characteristics of high efficiency and high precision. The low cost and stable and rapid production capacity can not only meet the growing needs of printing proofing, but also be suitable for digital printing factory or workshop high-volume digital printing industrial production. It also greatly enhances the added value of printing companies' products, helping printing companies to stand out in the fierce market competition. " Zhang Chaofeng, marketing manager of the company.
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Printing technology
Users of digital printing equipment are most concerned about the printing precision of digital printing equipment, equipment stability, ease of operation, ease of maintenance, adaptability, and cost of use. Mentioned printing precision, people always think of how much printing resolution is 1440dpi or 720dpi, in fact, this is only part of printing accuracy, precision printing involves many aspects, say nozzle resolution, precision machinery (stepper accuracy, mechanical accuracy of the roller shaft), the matching degree, and the ink jet head.
Nozzle accuracy
At present, the nozzles on the market include piezoelectric nozzles, thermal foaming nozzles, photo nozzles, and industrial nozzles. Among them, the most commonly used nozzles for piezoelectric printing are piezoelectric photo nozzles and industrial nozzles, and piezoelectric photo nozzles are EPSON four generations. The head, the fifth generation, and the sixth generation are the main products. The fifth generation is the mainstream product. The highest resolution is 1440dpi , which supports 720dpi and 540dpi printing mode. This is the most used nozzle for printing machines. In addition, some manufacturers choose industrial nozzles, such as the US SPETRA , Japan Ricoh, Japan Kyocera, etc., the industrial head general resolution is about 720dpi . Compared with the EPSON nozzle, the industrial head has a high price, but has a long service life, low resolution and large ink droplets. However, from the perspective of textile printing, the fabric is relatively thick, and the resolution above 720 dpi is visually It is difficult to distinguish. From the point of view of the nozzle, since the nozzle technology is monopolized by a few manufacturers, the printer manufacturers purchase from these manufacturers. Therefore, if the precision of the machine printing is selected, the starting point of the nozzle is basically the same.
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Digital printing, the rich manter in the low carbon era
Textile and Apparel Weekly reporter Zeng Shengshu
"Train station 5 1 Keqiao Acer high-speed inkjet printing machine, one day can be printed fabric 1500 to 2000 meters, and now digital printing plant 10 is generally the size of a digital printing machine, and there are high-speed machines, but also speed Machine, this depends on the market positioning of the operators, each company is different, " said Li Li, deputy general manager of Hangzhou Honghua Digital Technology Co., Ltd., " The output of these 10 high-speed inkjet printers is equivalent to 1~2 Strip flat screen printing line, we will reasonably configure the model according to the actual production needs and business strategy of the enterprise. As long as the enterprise finds the entry point of the product, the model of the printing machine is selected well, and the benefit will be considerable. " With the digital printing equipment Large-scale promotion will lead to more designs shifting to digital patterns. Digital printing has not only been limited to small orders. “ The digital printing companies that participated in the textile fair received 100,000 meters of printing orders. †Li Li said. “ Now many old customers are coming back to buy the printing machine again. One company we are talking about now plans to buy 50. The industrialization era of digital printing is coming. â€
In the reporter visited the course, there are companies said digital printing machine is like a "money machine" to describe the current digital printing much larger profit margins than traditional printing, but on the other hand is "as long as you can to take orders." This Explain that digital printing brings economic benefits, but also requires the company to have stable customer resources and skilled digital printing workers. It is understood that the current processing fee for digital printing is about 50 yuan per meter , and the price will fluctuate depending on the price of the base fabric and the pattern. A digital printing machine needs a skilled worker to control. The monthly salary of workers is about 5,000 yuan. Other relevant cost printing factory owners said that it is inconvenient to disclose, but they said that they are ready to add more digital printing machines to expand production scale.
Digital printing has become a new profit growth point for textile printing. In many traditional printing factories , under the current situation that “ business is harder to do every year †and “ both squeezed †, digital printing avoids the fierce market competition of traditional printing. Catering to fast-growing market demand is growing rapidly. Taking the lead in the field of digital printing, stabilizing the position and market share of enterprises in the field of digital printing is considered by more and more printing companies.
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