The hottest flexo printing trend is good, and the

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Flexographic printing has a good trend and a huge potential market

now more and more people know that flexographic printing is mainly used in flexible packaging printing, corrugated box printing, newspaper printing, label printing and other fields

according to preliminary statistics, more than 40 sets of unit type flexographic printing machines were sold domestically in 2004 (it is estimated that more than 50 sets will be sold due to incomplete statistical data), of which domestic equipment is still the majority. In 2004, the development momentum of domestic flexographic printing was good, and four unit flexographic printing machine manufacturing units were added in China: Dongguan duoweilong printing equipment Co., Ltd., Shanghai Yongbao (Taiwan Yuanbao) Machinery Co., Ltd., Guangzhou kesigo flexographic printing equipment Co., Ltd., and Weifang Donghang Precision Machinery Co., Ltd. In this way, 15 domestic units manufacture and sell flexographic machines, and there is a situation that the supply of equipment exceeds the demand, so some manufacturing units disappear, some sell at a profit under fierce competition. The original price of machines with a price of more than 1 million yuan is now reduced to 800000 yuan, and some are actively seeking foreign markets; Domestic flexographic printing machines have been sold to many foreign countries, such as Japan, South Korea, Vietnam, the Netherlands, the Philippines, Malaysia and other countries

the flexographic printing professional committee of China Printing Association held four national flexographic printing quality evaluation, exhibition and exchange activities. Through the display of products, people's views on the poor quality of flexographic printing in the past have been gradually changed. The change of view is hard won and lays a foundation for future development. In the 2004 quality evaluation exhibition, Beijing beiren Fuji company selected the calendar printed on their flexographic press, which was of high quality and won the quality award. Flexo printing can print a calendar, indicating that the quality of flexo printing is improving. After the quality evaluation exhibition, four units, Shanghai Shanyi printing company, Beijing beiren futu company, Qingdao keqiangda color graphic company and Guangdong Yingjie laser digital plate making company, entrusted the flexographic printing Committee of China Printing Association to send their flexographic products to the United States to participate in the quality evaluation of the American flexographic printing association. The results will be announced in May this year. We wish these flexographic printing products will win awards

the flexographic printing Commission organized a delegation to Dusseldorf to visit drupa exhibition in 2004. From the exhibition, it can be seen that flexographic plate making has reached the level of offset plate making, and CTP digital laser plate making has been quite common. At present, there are more than 400 CTP flexographic plate making machines abroad, while there are only 6 in China. CTP plate making is free from dust, insufficient air extraction, uneven irradiation, refraction and other defects, so the text lines are clear, the eye levels are rich, and the quality is good. Of course, the price of CTP plate making fee is high. At present, it is only used in flexo printing products with high quality requirements in China

line/inch is widely used in foreign flexo lines, while 175 line/inch or even 200 line/inch is pursued in China. High number of printing plate lines, rich colors and layers, strong stereoscopic sense and good visual effect. However, the higher the number of lines, the higher the requirements of matching and operation. Printing high-line prints is not the strength of flexographic printing. If the packaging and printing manuscript is well designed, it is OK to use 133 lines/inch. It is unnecessary to blindly climb higher. The practice of selecting the number of printing plate lines realistically and reasonably in foreign countries is worth learning from

at present, the thickness of flexographic plates used in packaging and printing in China is more than 1.7mm. When communicating with German WKA company, they frankly told the author that Germany has not used a 1.7mm thick printing plate, but a 1.14mm thin plate. Because the flexo is elastic and has the characteristics of compression deformation, while the thin version can limit the compression deformation. The thinner the printing plate, the smaller the deformation, so as to improve the printing quality. The thickness of the 1.14mm thick plate is 1/3 less than that of the 1.7mm thick plate, so the compression deformation of the plate can be significantly reduced. At present, the flatness of domestic printing base materials is generally good, and the accuracy of printing machines is also relatively high, so it should be popularized and applied 1. 14mm thin plate. Similarly, at present, 3.94mm thick plates are used for corrugated box printing in China. If conditions permit, thinner 2.84mm plates can also be used

speaking of corrugated boxes, the situation of domestic corrugated boxes using flexographic printing is developing satisfactorily. In 1999, the flexographic printing Committee held a corrugated board flexographic printing exchange meeting. At that time, flexographic printing had not been accepted by the corrugated box industry. The equipment used by enterprises was mostly two-color machines, and there were few three-color machines. The printing color box cutting experiment was in its infancy. After several years of development, three color machines are common, and there are also many four-color machines and five color machines. There are dozens of domestic manufacturers of corrugated box flexographic printing slotting machines. At present, it is estimated that there are more than 4000 corrugated box flexo printing machines in China and about 500 in Shanghai. The annual consumption of flexible plates is 250000 square meters

in 2004, the flexographic printing Committee held the fourth national flexographic printing quality evaluation exhibition, and DuPont also held the corrugated box flexographic printing (post printing) quality evaluation, and sent more than 100 kinds of participating products. In addition to the field, text and lines, the main products were line plate multicolor printing, and the number of printing plate lines was generally between 65-100 lines/inch. The printing quality was generally improved, which was praised by the judges and impressed the visitors

we believe that the number of lines in the corrugated box printing plate should not exceed 100. If the original design is good, line 80 is very good, because the corrugated paper surface is rough and the corrugated flatness is poor. Although the printing quality of pre printing (gravure printing and flexo printing) of roll corrugated paper is better than that of post printing, and the price also has advantages, its development is still slow. Sheet fed preprint mainly adopts lithographic printing. Although the printing quality is high, the cost is also high. It is mainly used in goods with high added value, such as household appliances, toys, art packaging, etc. Under the condition of market economy, the commodity competition is fierce, which has increased unabated in the past two years. With the improvement of post printing quality, it is estimated that it will replace some sheet fed pre printing

according to the units that produce ceramic roller, some corrugated box printing units pursue 500 lines/inch roller. The author believes that the corrugated roll used for corrugated boxes should not exceed 300 lines, preferably within 250 lines. The number of lines on the embossing roller reflects the ink volume. 500 lines can be used for printing line plates on the packaging, while 5% of corrugated boxes Servo mechanical and electrical face paper is gray white board paper with good ink absorption performance. Using a 500 thread corrugated roller will cause insufficient ink volume, resulting in an inconspicuous ink color of the print. The higher the number of roller lines, the better. Only by reasonable configuration can we obtain ideal high-quality prints

flexographic printing belongs to letterpress direct printing, which can use water-based ink, multi process online production, web printing, and can be widely used in other aspects, such as newspaper printing. Flexible printing is still blank in China. In European and American countries, flexographic printing accounts for about 20% of newspaper printing. Flexo printing uses water-based ink, which is immediately after printing, and there is no problem of soiling your hands when reading newspapers. The flexographic printing Commission is also exploring whether it is possible for domestic newspaper printing to adopt flexographic printing. As China gradually pays attention to environmental protection and takes the road of sustainable development, the legislation on Printing environmental protection and the legislation on excessive packaging of goods are attracting people's great attention. Active action is not only related to the waste of material resources, but also related to human health

the ink layer of flexo printing is relatively thicker than offset printing, so continuous printing for twice can meet the requirements of covering film. Now, according to the tape suppliers, 60% of the self-adhesive paper trademarks are completed by relief machine, which is easy to operate. This is also in line with national conditions. At present, there are many small batches of prints, and the printing volume is only a few thousand or even hundreds of prints, so it can't be used on the flexographic press. However, according to the law of static development of various springs at ordinary times, small batches should develop to medium and large batches. The recent reorganization of Shanghai tobacco industry printing plant also shows this, and the potential market is still large. Guoma in Shanghai, Zhengwei company, Jiangtian enterprise in Jiangsu and other units used to use low-speed relief machines. In recent years, they have successively purchased flexographic machines. With the continuous growth of China's national economy, packaging printing is increasing at a rate of about 12% per year, and some printing crystals may shift to flexographic printing. Many aspects show that the flexographic printing market is not narrowing, but the market is quite broad

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