In the past 15-20 years, technicians have developed many new systems to improve the printing quality of corrugated boxes. In the corrugated box production industry, there is a famous saying: "The quality of employees is the most important factor to ensure good production." The philosophy behind it is that excellent employees can ensure that the production goes smoothly even if they use equipment of average efficiency Excellent employees will do more with less if they use high-quality equipment. The high demands of customers on printing quality have brought many serious challenges to carton companies, including employee training, ensuring the stability between printing inks and substrates, and machine conditions and production capacity. At this time, the question that often comes to mind is: "Do you need to buy a new device to complete the high-quality printing requirements?" The answer is simple: "No." Although most new machines can complete high-quality printing Printing tasks, but the purchase of new machines alone does not completely guarantee the completion of high-quality printing tasks. The true secret of high-quality printing success lies in the ability of ink measurement control, recording, control and repeat printing.
In the past 15-20 years, many high-quality retrofit systems can now be installed on most machines to obtain excellent printing results. The modified high-quality printing system is now suitable for many devices, and operators can use existing machines to perform high-quality printing. No matter what type of machine is used in the carton factory, and regardless of what kind of printing work is being carried out, there are three basic elements that determine whether the machine has the ability to print with high quality. Therefore, when planning to modify the equipment, you must Start with three points: â– Anilox roller system â– Ink metering system â– Color registration Anilox roller Anilox roller is the core factor for transferring ink to the printing plate. If the amount of ink transferred by the anilox roller is insufficient (or too much), the amount of ink transferred to the substrate will be correspondingly insufficient (or too much), and the printing quality is difficult to guarantee. The number of anilox roller cells must be just right in order to transfer the appropriate amount of ink to meet printing needs.
In addition, the pigment content of the ink must be accurate so that the correct color can be reproduced. The above relationship is very important in flexo printing operations, and it is even more important in high-quality printing. The manufacturers of high-quality printing presses maintain a very close relationship with the suppliers of anilox rollers, inks and equipment, and it is possible for all parties to jointly guarantee high-quality printing. Ink metering system Operators engaged in corrugated box printing know that controlling the flow of ink to the substrate is a key factor in ensuring print quality. Therefore, the better the ink control or metering, the higher the print quality. There are three types of ink metering systems in flexo printing: roll-to-roll (or wiper) metering system, single doctor blade system and container doctor blade system.
Each of these three systems has its advantages, and well-trained and experienced operators can obtain good printing results with any of the systems. The roller-to-roller system (also known as the ink wiping system) uses a rubber roller to wipe off excess ink on the surface of the anilox roller. Because this system is reversely affected by hydrostatic forces, causing the rollers to separate at high speeds, and sometimes with high viscosity ink, it is difficult to control the amount of ink transferred, usually too much ink is transferred to the substrate. Because of this, these systems are usually suitable for inks containing solid particles, which are more difficult for fine printing operations.
In addition, because the amount of ink transferred to the substrate is not easy to control or predict, it is difficult to measure or repeat printing. During the printing process, the ink is exposed to the air, which means that dust and steam may cause the quality of the ink to be affected. This system relies on gravity to return to the ink cartridge, which in turn causes ink flow problems. Finally, because many parts are stained with ink, it takes a long time to clean the printing system. The single doctor blade system can provide stable ink flow. This means that the cells of the anilox roller can provide accurate, just as much as the design, just right ink flow. With a well-engraved anilox roller combined with excellent ink viscosity control, a good fine printing effect can be obtained.
In addition, because the amount of ink transfer can be measured and controlled, repeat printing can be documented. The single squeegee system also has some roller-to-roller squeegee system characteristics, such as the quality of the ink exposed to the air and the problem of gravity backflow. Of course, cleaning the single-sided knife system is much easier than the roll-to-roll system, but steam and dust are still issues to be solved. In addition to all the advantages of a single doctor blade system, the container doctor blade system has some unique advantages, making it ideal for high-quality printing. Like the single doctor blade system, the container doctor blade system can provide a stable ink flow. At the same time, it protects the ink from contact with air and dust, because the ink is in a closed container, not exposed to the air.
The best container system is closed, so that the ink can avoid contact with air and dust during the entire printing process, allowing the ink to naturally return to the ink cartridge without relying on gravity. Because the closed system does not expose the ink to the air, it can easily maintain a stable ink pH and ink viscosity throughout the printing process. And cleaning is also very simple and easy, in most cases, automatic or semi-automatic cleaning can be used. In high-quality printing, an aspect that is often overlooked is the cleanliness of the machine and the operating conditions of the machine.
Obviously, all machine parts and electronic parts of the machine must be in normal operation to ensure the smooth progress of printing, but one of the most easily overlooked factors is the cleanliness of the machine, especially the ink metering system, the anilox roller and the printing plate. Controlling dust in the production environment is also a key factor, including the cleanliness of the substrate. All successful high-quality printers spend considerable time in the entire production process to ensure the cleanliness of the machine. Regardless of the machine's production capacity, and regardless of its old or new level, maintaining cleanliness (sometimes called internal maintenance) is a watershed between high-quality printing and general-quality printing. One factor that affects the printing quality of color registration is the combination and placement of the cardboard. Facts have proved that the most effective way to improve printing quality in flexo printing is to use a vacuum conveying system, which has now become one of the transformation forms of many equipment.
Vacuum conveying can ensure that the cardboard enters smoothly at the correct time, and conveys the cardboard to the printing unit. Since the printing plate is fixed in the printing process, the best printing (kiss) effect can be obtained as long as the cardboard position is accurate. Traditional printing presses have a tow roller and a tow ring. If the cardboard is flat and in good condition, the cardboard will not suffer much damage during transportation. However, if the cardboard is warped, various problems will occur, and even cardboard crumpled. At this time, if multi-color printing is used, the color will be misregistered, especially when printing at high speed. Many employees who control the printing work of the multi-color group have to reduce the production speed of the machine (usually less than the rated speed) to ensure the registration accuracy and reduce the wrinkles of the cardboard. The printing machine with vacuum conveying system eliminates the printing quality problems of traditional printing machines, and can perform high-quality printing at a high production speed. At the same time, since there is no need to use a tow ring and a tow roller, the startup time can be greatly shortened.
False eyelashes are a kind of beauty products. Many fashionable ladies like to beautify their eyes with false eyelashes, so as to make their eyes more attractive. The package of false eyelashes needs to highlight the characteristics of the product, so the packaging box will fit to the size of eyelash , so generally box is small and exquisite, also it has the function of display. The most common type of box are book box and Lid And Base Box. There is a plastic tray holding false eyelashes.
Eyelash Printing Box
Magnetic Boxes For Eyelashes,Color Eyelash Packaging Box,Eyelash Cardboard Box,Custom Eyelash Packing Box
Huizhou Cailang Printing Products Co.,Ltd. , https://www.onlymakeboxes.com