In the situation where corrugated cardboard production lines and single-sided machines are quite popular, the competition in the carton industry is shifting to the quality of printing. Improving the quality of carton printing has been used by carton manufacturers as an important means to increase competitiveness and market share. There are three methods for printing carton printing: flexo printing, screen printing, and plane offset printing. The flexo printing and screen printing are the most common.
Flexo plates include hand-engraved rubber plates and photosensitive flexo plates. The hand-engraved rubber plate is a natural rubber plate with a filler added, and it has long dominated the country due to its low cost. But now it is no longer competitive because it cannot meet market demand. This traditional technology has been used less and less.
The photosensitive resin flexographic plate is referred to as a flexographic plate, and is a photopolymer similar to a sandwich. The upper surface is a protective layer, the middle is a photosensitive resin, and the lower surface is a support film. As long as a qualified photographic film is available, a high-quality copying plate can be obtained by a process of exposure, rinsing, de-bonding, and drying on a flexographic platesetter. This plate hardness is available between Shore 35 and 70. Can accurately design the original manuscript, copy text, lines is easy. And copying complex patterns, bar codes, and color-printing patterns is simply not achievable.
Carton printing involves seven aspects of paper, board, design, plate making, printing machinery, ink, and other materials. The vast majority of manufacturers of corrugated boxes are equipped with home-made plate making equipment. The purpose of this article is to discuss how to make a high-quality flexo plate on a domestic platemaking machine after the design process is completed. The domestically-manufactured equipment with the largest sales volume in China are mainly brands such as Henan, Jiangsu, and Shanghai. Among them, the maximum price for the production and sales of Henan Tianma is relatively higher, while the production price of other plate processing equipment is relatively low, but the production process is simple and it is still unable to meet the special requirements of customers.
Here's a brief introduction to the TMD-762 flexographic platesetter produced by Henan Tianma:
First, the main technical features of the structure and appearance of the lithograph machine:
1. The four processes of exposure, flushing, de-bonding and drying are completed in one machine. In order to make high-quality exposure possible, the aircraft has an electronic monitoring system.
2, all the flexographic production program completed by the operation panel. The operation panel involves time and temperature critical data and is controlled by microcomputer components. The data is accurate and accurate.
3, fine brush, good stiffness, can make 100 lines / inch carton color dot version and more detailed lines and trumpet text.
4. The whole machine components and complex surfaces are processed by the United States CNC machining center. The process is reasonable, with high precision and long service life.
Second, the operating procedures 1, the pycnometer after passing the test, add the preparation of an accurate solution of the bath.
2. Turn on the power supply, the voltage is 200V, the power is 5KW, and the wire is a 6 square meter copper cord.
3. After the LED luminescence test, confirm that the UV lamp is fully lit, and then enter the exposure tray, put on the flexible plate bonded with the film, re-evacuate the film, and vacuum-evacuate seven. Close the exposure drawer for accurate main exposure and back exposure.
4. Attach the exposed flexible media to the moving plate with double-sided tape and cover the cover. According to different requirements, determine the washing time. During winter washing, the bath temperature was set to 25C.
5. Use the spray gun to clearly bind the resin particles on the plate, and blot the liquid on the plate with a lint-free paper towel or nylon towel.
6, put in the drying oven for drying, drying temperature is 60C, time is about 60min.
7. Place the exposure drawer for post-exposure.
8, put in addition to the sticky drawer for optical detackification. The plate making process is all over
Third, compared with similar imported equipment 1, there is still a gap in automation. Sometimes it is necessary to add artificial auxiliary actions.
2. There is also a gap in environmental protection devices. Need to add auxiliary equipment, such as exhaust fans.
3. Some sensors are missing. If the viscosity of the wash plate is determined, it cannot be alarmed randomly and it needs to be determined with a pycnometer.
In summary, it can be seen that some gaps can be overcome manually, and only a few hundred dollars are needed for the equipment to be added, but the quality of the printing plate is in one grade, and the price is equivalent to 25-30% of the imported equipment of the same type.
Fourth, special tips In order to obtain high-quality printing plate, please pay attention to the following matters:
1. Select a high-quality printing plate. At present, there are various kinds of plate materials in the domestic market, but we must choose the best performance and price. According to the author's more than 10 years experience in plate making, we found that DuPont's Dupont Cyrel plate has high exposure latitude and high initial strength. The process can be repeated and is the preferred medium for the industry.
2. Select high quality film. Plain text and line plates can be copied on their own. In relation to the color printing image edition, the fine text version must be produced by the publishing center. The density (blackness) of the multiplex film must be above 3.5. When it comes to barcodes, please ask the barcode center to provide the film.
3, often make image dot version, to replace the exposure lamp. Please use PHILIPS lamps because Philips lamps have an accurate wavelength and high luminous flux.
4. Always keep the freshness of the washing solution to reduce moire and pitting.
5. Once a week, change the suction membrane frequently.
If you can pay attention to the above issues, you can use a domestic plate maker to produce high-quality printing plates.
Flexo plates include hand-engraved rubber plates and photosensitive flexo plates. The hand-engraved rubber plate is a natural rubber plate with a filler added, and it has long dominated the country due to its low cost. But now it is no longer competitive because it cannot meet market demand. This traditional technology has been used less and less.
The photosensitive resin flexographic plate is referred to as a flexographic plate, and is a photopolymer similar to a sandwich. The upper surface is a protective layer, the middle is a photosensitive resin, and the lower surface is a support film. As long as a qualified photographic film is available, a high-quality copying plate can be obtained by a process of exposure, rinsing, de-bonding, and drying on a flexographic platesetter. This plate hardness is available between Shore 35 and 70. Can accurately design the original manuscript, copy text, lines is easy. And copying complex patterns, bar codes, and color-printing patterns is simply not achievable.
Carton printing involves seven aspects of paper, board, design, plate making, printing machinery, ink, and other materials. The vast majority of manufacturers of corrugated boxes are equipped with home-made plate making equipment. The purpose of this article is to discuss how to make a high-quality flexo plate on a domestic platemaking machine after the design process is completed. The domestically-manufactured equipment with the largest sales volume in China are mainly brands such as Henan, Jiangsu, and Shanghai. Among them, the maximum price for the production and sales of Henan Tianma is relatively higher, while the production price of other plate processing equipment is relatively low, but the production process is simple and it is still unable to meet the special requirements of customers.
Here's a brief introduction to the TMD-762 flexographic platesetter produced by Henan Tianma:
First, the main technical features of the structure and appearance of the lithograph machine:
1. The four processes of exposure, flushing, de-bonding and drying are completed in one machine. In order to make high-quality exposure possible, the aircraft has an electronic monitoring system.
2, all the flexographic production program completed by the operation panel. The operation panel involves time and temperature critical data and is controlled by microcomputer components. The data is accurate and accurate.
3, fine brush, good stiffness, can make 100 lines / inch carton color dot version and more detailed lines and trumpet text.
4. The whole machine components and complex surfaces are processed by the United States CNC machining center. The process is reasonable, with high precision and long service life.
Second, the operating procedures 1, the pycnometer after passing the test, add the preparation of an accurate solution of the bath.
2. Turn on the power supply, the voltage is 200V, the power is 5KW, and the wire is a 6 square meter copper cord.
3. After the LED luminescence test, confirm that the UV lamp is fully lit, and then enter the exposure tray, put on the flexible plate bonded with the film, re-evacuate the film, and vacuum-evacuate seven. Close the exposure drawer for accurate main exposure and back exposure.
4. Attach the exposed flexible media to the moving plate with double-sided tape and cover the cover. According to different requirements, determine the washing time. During winter washing, the bath temperature was set to 25C.
5. Use the spray gun to clearly bind the resin particles on the plate, and blot the liquid on the plate with a lint-free paper towel or nylon towel.
6, put in the drying oven for drying, drying temperature is 60C, time is about 60min.
7. Place the exposure drawer for post-exposure.
8, put in addition to the sticky drawer for optical detackification. The plate making process is all over
Third, compared with similar imported equipment 1, there is still a gap in automation. Sometimes it is necessary to add artificial auxiliary actions.
2. There is also a gap in environmental protection devices. Need to add auxiliary equipment, such as exhaust fans.
3. Some sensors are missing. If the viscosity of the wash plate is determined, it cannot be alarmed randomly and it needs to be determined with a pycnometer.
In summary, it can be seen that some gaps can be overcome manually, and only a few hundred dollars are needed for the equipment to be added, but the quality of the printing plate is in one grade, and the price is equivalent to 25-30% of the imported equipment of the same type.
Fourth, special tips In order to obtain high-quality printing plate, please pay attention to the following matters:
1. Select a high-quality printing plate. At present, there are various kinds of plate materials in the domestic market, but we must choose the best performance and price. According to the author's more than 10 years experience in plate making, we found that DuPont's Dupont Cyrel plate has high exposure latitude and high initial strength. The process can be repeated and is the preferred medium for the industry.
2. Select high quality film. Plain text and line plates can be copied on their own. In relation to the color printing image edition, the fine text version must be produced by the publishing center. The density (blackness) of the multiplex film must be above 3.5. When it comes to barcodes, please ask the barcode center to provide the film.
3, often make image dot version, to replace the exposure lamp. Please use PHILIPS lamps because Philips lamps have an accurate wavelength and high luminous flux.
4. Always keep the freshness of the washing solution to reduce moire and pitting.
5. Once a week, change the suction membrane frequently.
If you can pay attention to the above issues, you can use a domestic plate maker to produce high-quality printing plates.
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