The status quo and development trend of domestic gravure printing
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The development of gravure to today's great situation is formed through the joint efforts of many industries. The implementation of new technologies in the printing industry has pushed the gravure to move towards prosperity. Of course, the demand of the market is an important part of the positive development of gravure. With the continuous development of the market economy, the rapid development of beverage, medicine, health care products, cosmetics, detergents and clothing industries, the demand for gravure prints is increasing, and the demand situation is getting higher and higher. China's gravure printing has developed rapidly. The market share of various printing forms in China has undergone significant changes. Gravure becomes the second largest branch after lithography and is the main printing method for packaging printing.
Domestic gravure packaging equipment manufacturing industry still has a big gap with foreign developed countries (especially Europe). Mainly reflected in the application technology of printing equipment, such as: lubrication system, closed scraper system, shaftless transmission system, production management system.
First, the status quo of gravure printing machine
The printing speed of the domestic gravure printing machine is 60-300m/min, the printing width is 800-2500mm, the foreign printing speed is 150-450m/min (soft bag), 800-1000m/min (paper), and the printing width is up to 4320mm. . Generally, in gravure printing, the tension is divided into four sections for control, namely: discharging, discharging traction, receiving traction, and receiving. Automatic tension control is used in China, and system tension control is used individually. System tension control is often used abroad. It is based on the programmable logic controller (PLC), and collects, processes and controls the tension of each section. The segments are supported by each other and compensated centrally. Most of the domestic registrations are vertical computer automatic control, horizontal manual control, and foreign vertical and horizontal are all automatic registration.
Second, the advantages of gravure printing
1, the ink layer is thick, the ink is even
Gravure can really reproduce the original effect, rich in layers, clear, thick ink layer, high ink saturation, bright and bright color. This is determined by the characteristics of the gravure.
2, can be widely used non-toxic water-based inks and alcohol-soluble inks, to achieve the standard of green printing. At present, gravure has basically adopted water-based inks in the field of publishing; in the field of decoration, most of them use water-based inks; in the field of flexible packaging, although the proportion of solvent-based inks is quite large, people are actively developing water-based inks that can meet environmental standards. Alcohol-soluble inks have achieved promising results.
3, adapt to a wide range of media
The medium for gravure printing is very wide, including PDC, PET, PE, NY, CPP, OPP, BOPP, composite film and other films and papers with the same properties as the above materials.
4, the product is more widely applicable
Flexible packaging accounts for a large proportion of packaging products, with developed countries accounting for 65% and some over 70%. And China is only 5% to 8%. The development potential of China's flexible packaging market mainly includes the following aspects: dairy market, juice beverage and other beverage industry, vegetable juice processing industry, Chinese medicine manufacturing industry, health drinks and so on. After years of continuous development, various composite materials have been widely used in the packaging industry.
5. The comprehensive processing capability of gravure printing equipment is strong
The gravure printing machine can also add processes such as glazing, laminating, coating, die cutting, slitting, punching, and cross-cutting. With the continuous emergence of a variety of paper packaging, such as shopping bags, merchandise bags, garbage bags, refrigerator storage bags, etc., handicraft packaging, household daily necessities packaging, clothing packaging, pharmaceutical packaging also use a large number of plastic flexible packaging, each Solid packaging boxes, liquid packaging boxes, cigarette packets, wine bags, etc. all require comprehensive processing of gravure equipment.
6. Gravure printing equipment is easy to maintain and maintain, and has a long service life.
Although gravure is the easiest way to print, its advantages are not understood. For example, gravure printing is costly, which allows many packaging products to abandon gravure and use conventional offset printing. However, the gravure cylinder can be used multiple times, and the number of stamps per set can reach 3 million to 4 million impressions.
At present, with the successful development of ink manufacturers for environmentally friendly inks such as alcohol-soluble inks and water-based inks, the development of gravure technology has been promoted. At the same time, in the field of plate making, the continuous use of substitute materials for plated steel rolls and steel rolls will further reduce costs, improve the economic efficiency of gravure printing, shorten the pre-press adjustment time, and eliminate short-circuit defects. At the same time, with the adjustment of the price of domestic high-speed gravure printing presses, the cost continues to decline, which will eventually increase the market share of gravure printing.
Third, the main problems in China's gravure printing industry
The main problems in China's gravure printing industry are:
1. Gravure enterprises were mostly affiliated to many industries such as light industry, tobacco, packaging, building materials and postal services. There is no counterpart in management, activities are scattered, and industry management and services are clearly behind other industries. The establishment of the gravure printing branch will help promote the development and technical exchange of the gravure industry.
2. There is still a lack of comprehensive understanding of the advantages of gravure printing, and there is no real understanding of the characteristics of the international advanced level gravure printing machine. In addition to the well-known print quality, good equipment stability, simple operation, strong processing capacity and wide adaptability, the cost of gravure cylinders that can be used repeatedly is greatly reduced, and the application of environmentally friendly gravure inks is widely applied. Will greatly enhance the market competitiveness of gravure printing.
3, domestic gravure printing equipment and foreign advanced level, there is still a considerable gap, such as the speed and reliability of gravure equipment needs to be improved, sleeve printing plate / impression cylinder, independent drive technology, closed anti-proof Techniques such as splashing devices and rapid pressure applying devices for squeegees need to be promoted and applied, and wide-format gravure printing equipment is also to be developed. From the perspective of the domestic printing market, imported equipment has basically monopolized the high-end market of gravure printing.
4. The education and scientific research of gravure printing is also lagging behind the actual production. The gravure printing enterprises lack middle and senior professionals.
5. The revision of the gravure-related standards is seriously lagging behind.
Fourth, the development trend of China's gravure printing industry
1. Large and medium-sized packaging gravure printing enterprises will dominate the market, especially the cigarette and gravure printing enterprises will pursue scale efficiency, high quality and high technology content.
2, due to environmental and health reasons, food, medicine, tobacco, wine and other industries are paying more and more attention to the environmental protection of packaging materials and printing processes, gravure companies are more concerned about the environment of the printing workshop. Environmentally friendly inks and varnishes will become more and more popular, closed-type squeegee systems and quick-change devices will be promoted, and gravure machines that adapt to water-based inks will be widely used.
3. The independent driving technology of gravure printing machine and the electronic shaft transmission as the technical platform will realize the comprehensive upgrading of gravure printing machine. The gravure printing machine for various purposes will adopt electronic shaft transmission. At present, electronic shaft drive and registration systems are mainly from Japan and Europe, but they can only be applied to a small number of domestic gravure presses. The development of domestic overprinting system will be the key to the comprehensive upgrade of domestic gravure printing machines.
4. The proportion of wide gravure presses and paper gravure presses will continue to increase. On the one hand, the market for decorative printing (mainly wood grain paper printing) and carton gravure printing will grow rapidly. On the other hand, the range of flexible packaging gravure presses will continue to increase, and the number of large format gravure presses will increase rapidly. Paper and paper-based composite gravure presses (grain-grain cigarettes, aseptic packaging, gift wraps, etc.) will grow rapidly.
5, gravure production line processing will be more diversified, functional configuration is getting stronger and stronger, such as the above light, die cutting, cross cutting, soft marking and so on. Accordingly, gravure management systems and remote technical support systems will be increasingly adopted. At the same time, in order to meet the needs of individualization, all parts from unwinding, printing to connection processing, winding and so on will be modularized, the most important of which will be gravure trolley or gravure and flexographic printing interchange. Small cart.