For the anilox roller, there have been many new developments. However, only by making fundamental adjustments to the printing process can we see the good results brought about by this new change. Flexographic printers hope to have a certain advantage. Printers and accessories manufacturers have also been touting the power of their new technological improvements. But if we don't pay attention to the foundation, all these new technologies will not bring us the results we imagine. Let's explain, what is the basic work? That is, when the system needs to be fine adjusted? When rubber nip roll is used instead of the doctor blade, this technology can not accurately control the ink layer thickness on the anilox roller. ——When pH value or ink viscosity (two key factors affecting ink fluidity) are not monitored, color density will shift. ——When the gear of the transmission device used is worn by strength, it will lead to unstable ink transmission. ——Bearing loose or wear, will also produce dust plate pressure instability. ——As a result of repeated loading and unloading, resulting in flexo plate elongation and deformation. ——We can not think that an 800 LPI anilox roller with 200 billion cubic micron mesh formed at 60 degree angle has the same ink transfer performance as the 120 million cubic micron anilox roller formed at 30 degree angle. ——The ink transfer performance of damaged and blocked anilox roller is different from that of clean and intact anilox roller even under the same engraving data. All process variables must be correct so that we can see the advantages of the new technology when we use it. Moreover, the requirements for printing quality must be corresponding to the cost and workload, otherwise, the staff will insist on their past experience. FM network technology and hybrid screen technology (it will take a long time for the traditional amplitude screen and FM screen to be widely used, so the traditional screening technology still occupies a large proportion. It is too early to consider the use of FM networks at present. However, if the printers can use the new technology consciously and systematically, they will have a great advantage in the future competition. The manufacturers of anilox roll always try their best to develop engraving rolls with higher line number. The minimum number of anilox rolls set up by any user can reach more than 150 LPI (or even more than 200 LPI). It is recommended that the roller with 1000, 1100 and 1200 LPI can obtain better results. For 20 years, 800 LPI has been the limit of laser technology and control technology. Only in recent days has this limit been broken. The advantages of the new engraving technology are very obvious. The engraving roller with higher number of lines can support smaller and brighter dot on the plate and reduce the occurrence of dip phenomenon (this dip phenomenon refers to that when the mesh point is smaller than the mesh of the anilox roller, it will be completely immersed in the mesh, resulting in ink staining around the dot, resulting in unclear layout and large dot gain value). Although the production of anilox roller can produce more than 2000 LPI products, few people buy more than 1500 LPI roller. This kind of roller with more than 1500 LPI has very small mesh groove and thin mesh wall. Although this kind of mesh slot can achieve high printing quality, it is difficult to support the current cleaning methods such as ultrasonic wave and soda water jet. In addition to the consideration of cleaning and damage, most printers do not have to meet the requirements of their users.Generally, there are few users who use 1500 LPI roller, and the increasing trend of demand is between 900 and 1200 LPI. But orders for this range come from high quality printing plants, mainly for narrow, intermediate and wide web presses. If it is necessary to use the anilox roller with 800 LPI or more, the optimization of the components of each ink transfer system is the key factor. CO2 laser has been the standard laser generator for engraving in the industry for many years. YAG laser is also very useful in producing fine engraving effect, because its beam is narrower and can focus on finer points; its energy is more concentrated, which can obtain cleaner mesh in the case of finer mesh wall. The basic engraving ability of this laser is 1200 LPI, while that of CO2 laser is 700 LPI. Therefore, if the required ink point is smaller, this laser product can get better color gradient effect. If the carving technology is not considered, the thickness of the mesh wall will decrease with the increase of the reticulated lines. If the net wall of 400 LPI is twice as thick as that of 800 LPI, the service life of 400 LPI anilox roller will be longer, and the requirements for use will be lower. For printers who want to use flexo printing to obtain offset quality, it is very important to establish standards and monitor variables. The standard of printing process, including the stipulation of roller ink quantity and anilox angle for each line number. The interchangeability and estimation of the system must be strictly controlled. Once the control is established, the integrity of the system should be maintained. This is to maintain the parts of the press correctly. If we only do the basic quality control work, we will find that the quality control of printing is only obvious.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.