Analysis of the competitive situation between the

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Analysis of the competitive situation between flexo printing and gravure printing

when reviewing flexo printing in the late 1970s and early 1980s, we found that there are three reasons for flexo printing to excel in the field of packaging printing. first. Flexographic printing machine is simple in design and structure The price is also much cheaper than the corresponding gravure press. At the same time, the current packaging has also changed from monotonous form to colorful personalized packaging that is more close to customers' psychology. This means that the live parts of packaging prints tend to be shorter, and at this point, flexo printing is also more advantageous than gravure printing. Secondly, the continuous progress of flexo printing technology has greatly promoted the smooth expansion of its business. In addition Gravure printing is invested too much before printing due to the environmental protection problems involving toxic chemicals So in 2. In the early 1980s, gravure plate making was expensive, and the corrosion of gravure cylinder occupied a lot of time in gravure printing business. As mentioned above, the market is showing flexible characteristics, smaller business orders and flexible print numbers. In addition, the support of some market forces and industry organizations for flexo printing is also the reason for the rapid development of flexo printing. A series of technological innovations have made great progress in both prepress and printing. Printing technology, prepress technology, ink and sleeve technology have been applied to flexo printing Make flexographic printing more meet the needs of consumers. All these have made flexo printing a happy time in the past 20 years ".

flexographic printing has achieved a certain degree of success in all printing fields involved. In particular, it should be pointed out that flexographic printing has won a large market share from gravure and offset printing positions.

printing technology has made rapid progress in the past 20 years. From a technical point of view, the progress of flexographic printing technology is a continuous process, and the progress of each technology has brought the improvement of printing quality.

in the 1980s Generation Automatic roller robots began to be used to operate and adjust the bulky corrugated rollers and sleeve plates. This precise and highly automated system liberated people from the heavy and dangerous operation and adjustment work, thus greatly reducing the damage to the expensive corrugated rollers and plate cylinders

By the early 1990s, almost all printing operations had been computerized. In recent years, user-friendly interface enables all printing operations to carry out screen operation and programming control. This technology has quickly become an industry standard

thin sleeve technology came into being in the mid-1990s. Like some other new technologies, this technology also had some defects in its early stage. However, in recent years, we have seen significant improvements in thin sleeve technology Especially in the printing resistance. Sleeve version can be said to be the key factor affecting flexo printing technology. Fortunately Today we see the welcome changes this technology has brought to flexo printing. We expect more advanced technologies to be applied to flexo printing

shaftless drive technology was applied in the printing industry in the late 1990s, which can be called the biggest innovation of flexo printing technology in the past 30 years. Shaftless drive technology enables flexible printing length within a certain range, but it also makes the machine complex and expensive

the progress of prepress technology has also simplified the flexographic printing process and improved the printing quality. Closed loop digital workflow replaces the previous complex and time-consuming process And gradually popularized. However, this technology should continue to be tested by practice, and the progress of research projects should be optimized by replacing CO2 technology; Summarize the experience and lessons learned from the implementation of phase 1 to determine whether it can become an industry standard

advanced prepress technology can reduce intermediate steps and costs, reduce errors and save labor. Although there are more variable factors affecting flexo printing results than gravure printing But through more advanced technology to make up for the flexographic printing results are also basically predictable

the main differences between flexo printing and gravure printing are reflected in the following aspects:

1 In flexo printing, the field part and the tone part need to be treated separately: while gravure printing can have field, tone and text at the same place at the same time. Although c-quantity P technology and DD technology have made great progress, flexo printing is still unable to deal with anti white printing; Gravure printing has always had no problem in printing anti white draft and line draft. And the application of laser engraving technology makes gravure printing more promising in these aspects

2. Generally, the resolution of flexographic printing is 120 lines/inch, while the resolution of gravure printing can be as high as 250 lines/inch

3. When dealing with closed field printing, the flexo printing process requires the precise coordination of printing plate, paper tape (substrate) and ink to ensure the printing quality; Gravure printing can calmly deal with various color changes

4. In terms of the tolerance of the printing plate, the printing resistance of the flexographic plate largely depends on the experience of the operator and the quality of the prepress plate; for gravure printing, the printing resistance of the printing plate has nothing to do with the experience and ability of the operator due to the simplification of the process

a layman saw the above comparison It is certain that gravure printing is superior to flexo printing. In fact, the cost of gravure printing is much higher than flexo printing

some investigations believe that gravure printing is an expensive printing process with high investment. in fact. 20 years ago, the price of a gravure press was much higher than that of a flexo press with the same configuration: today, a flexo press with shaftless drive and sleeve technology has been compared with the same configuration of a gravure press There is little difference in price

the so-called cost includes not only the price of the printing press, but also the operating cost. When it comes to this problem, some people must say that in fact, the operating costs of each printing method are the same, and the staff placement costs of the two printing processes are almost the same. Except for drying (the drying energy consumption of gravure printing is significantly higher than flexo printing), the energy consumption is also roughly the same, and the operation conversion time and cost are also the same

since the cost consumption of the two is the same in many aspects, the biggest difference should lie in the plate making link, or in the production cost of flexo sleeve and the engraving cost of gravure cylinder. According to a survey In Europe, the average level of these two costs is 60% of that in the United States In Asia, the average level of these two costs is 30% of that in the United States. It is not easy to find the reasons for cost differences in different parts of the world. stateside. If the cost of roller and engraving can be close to the level of most countries in the world, then a major obstacle to investment in gravure printing can be removed

in the past 20 years, gravure printing has made unremitting efforts to solve its cost problem Flexographic printing has paid the price of rising costs to improve printing quality. So today we can't simply regard gravure printing as a printing process whose cost is much higher than flexo printing

the statement that gravure printing is an old and potential printing process is very incorrect. Almost all the new technologies used in flexo printing can be applied to gravure printing, so as to improve the competitiveness of gravure printing and flexo printing. For example, the automatic cleaning system and even the recently appeared sleeve operating system have been well applied to flexographic printing to reduce job switching time and improve mechanical efficiency. As mentioned above, shaftless drive technology is more and more widely used in our industry Some people boldly predicted that the axial printing press would disappear in five years

gravure printing also has an automatic cleaning system, which is used for rapid job conversion, making gravure printing more flexible, thus becoming the best choice for high-quality short edition printing

just like the rapid development of flexo ink supply system, gravure ink supply system has also been improved rapidly Modern gravure printing machines can reach the machine speed of RPM. Ink problem is an important reason to limit the speed of gravure printing machine. Now The ink nozzle technology can produce a supply speed of 1200 rpm, and the new ink roller technology can make the maximum printing speed reach 2000 rpm

doctor blade technology is also well used in gravure printing This enables gravure printing to obtain flexible repeat printing length

the automatic cleaning system for gravure printing is generally composed of nozzle, solvent supply system, ink tray and related hoses. We have used this technology to clean a gravure cylinder full of ink. As a result, it took only 1 minute to clean all the ink on the ink supply system into the ink tray and hose. The solvent spraying system starts to clean the drum and ink tray, and a few minutes later, the drum and ink tray are cleaned. Just like on the flexo press, the automatic cleaning system can clean all gravure cylinders in 4-5 minutes, which greatly reduces the job conversion time

in the early 1990s, sleeve technology was rapidly popularized in the field of flexographic printing. Accompanied by sleeve technology was a small cart for storing sleeves, which can easily replace wrinkle rollers and sleeve printing plates. During the operation of the gravure press, the sleeve printing plate that needs to be replaced for the next moving part can be placed on the trolley, so as to achieve the purpose of rapid operation conversion

the application of trolleys has promoted the development of gravure printing. Trolleys shuttle back and forth between different moving parts to achieve rapid conversion. Trolleys can also be used to transport ink pumps, oil tanks, hoses, ink trays, etc. Whether for gravure printing or flexo printing, an important factor to accelerate the conversion time of operations is a well-trained operator and a convenient logistics system. In addition, the gravure drum automatic replacement system can avoid any human factors, but as long as you read it carefully, it can also reduce the operation conversion time

various advantages of shaftless drive technology in flexo printing For example, the gear and shaft sleeve are reduced, and the accuracy of action and the consistency of speed are achieved It is also reflected in the application of gravure printing. With the development of shaftless technology, flexo printing can be realized in a certain range, and shaftless technology has overcome many inherent shortcomings of flexo printing

in addition, the emergence of electronic shaft technology is as significant as shaftless drive technology. This technology significantly improves the control and maintenance of gravure printing machine. Therefore, this weak signal must be expanded through an amplifier. A series of problems improve production efficiency and reduce machine noise. Different sizes of rollers can be selected. In addition, due to the reduction of compensation rollers It also makes the paper (substrate) path shorter, and the reduction of the direction of the transmission shaft promotes the accuracy of color registration

electronic shaft transmission also has some shortcomings. First of all, the input of electronic shaft transmission is much higher than that of traditional mechanical shaft transmission, and after the adoption of electronic control, the complexity of printing electronic control is increased, and the maintenance of the electronic control system of the machine is more difficult

sleeve technology has been rapidly applied and developed in flexo printing and gravure printing. The advantages of sleeve technology include simpler operation, rapid job conversion, and the cost of sleeve version is much lower than that of engraving gravure cylinder

however, sleeve technology still needs to be improved in many aspects, and the quality needs to be improved. News on August 8, especially in flexo printing applications. Accuracy and tolerance are the two major defects of sleeve technology, but these two points have been significantly improved in the past two to three years. Due to the competition among manufacturers, technology continues to develop

The cost of gravure printing cylinder can not be ignored. Unlike the sleeve, when the physical life of the drum reaches the limit It must be stopped or re coated and re engraved before use

there is also an application of a lightweight chromium plated nickel sleeve system. This kind of cylinder is carved and directly sleeved on the gravure cylinder this

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