Screen printing ink transfer process of
Screen Printing of the printing process looks very simple, a Scraper A network only. However, the ink transfer process, and most people think the idea is much more complex, because screen printing ink in printing has been the trip was rotary movement, rotation, centrifugal force and Scraper Simultaneous effect on the ink pressure.
General precision screen printing will not consider these issues. Because the theory is always a lot, but the practice may be only two or three steps. Many have done a very good master could not get to the bottom of this issue too. From practice to practice, is to explore and develop their own screen printing technology, one of the main path. On the screen printing ink transfer process, we investigated the transfer of ink ink transfer process and the impact of the key points, if we replace the daily print to achieve the target, that is, how precise control precision lines and dots, with most best parameters to achieve this process.
First, the ink is screen printed with a scraper from the surface squeeze past you, I do not think the problem is. Two conditions. First pull further ahead, offset, gravure and resin version technologies include Pad The ink transfer process for printing ink and printing are in close contact to achieve ink products delivered. We look back to the screen printing ink transfer process, we will find that the knife cover holes in the web version of the Internet is full of ink later, we printed the purpose of scraping scraper is to screen close contacts and printed materials, mesh bottom of the ink is in contact with Indian goods, stick to the printed product moment above. Therefore the most important web printing scraper function is to achieve net version and the printed product line of precision engagement, rather than force the ink way through the large network version. This is the precise amount of ink under the control of a theoretical basis.
Said that the reason is because the screen printing industry is very broad application, said ink to be squeezed through the screen, in order to get the maximum amount under the ink, the most typical is to use the round to reach the goal of the printing squeegee It demands precise control of our requirements under the ink is not the same. In this article I use the round scraper Screen Printing in the presence of a special case look.
This article is mainly about the transfer process and ink, and we discuss how to precisely control the amount of ink, ink scraping angle of screen printing ink for the next great influence. Widely recognized as the best squeegee angle is 75 degrees, made the point race as well. Tianyi ink Mr. Zhou Tianhan series of ink in the development of gold during the Great Sage, done a lot of experiments to study the hardness and blade angle of the interaction between ink viscosity. Get a lot of valuable data. Mr Zhou's view is sure to do screen printing ink ink transfer process understanding proficiency are that the process of screen printing ink transfer is precisely the product of many factors that eclecticism. Through the experiment, you can understand blade angle, blade hardness and ink viscosity, ink scraping between the cutting edge in the process of printing the brief interaction. On this basis, it would make the best suitable ink printing power. I think the days of interest point of view is correct, ink supplier should take into account ink screen printing process parameters are very important subsystems and experiment, from the global view of screen printing ink. By the way, we are really pleased to see high-end ink made in recent years and achieved breakthroughs in high-end screen.
Tianyi made in the process of scraping and India ink pressure concept. I want to tell you about this concept, why the same intensity, the same premise Squeegee hardness, the same mark, the reasons for the Indian angle of 60 degrees than scraping scraping angle of 75 degrees and India ink to do a large, mainly in the printing experiments showed that process, the blade and the angle between the Department of ink mesh is a high speed, high-speed rotation of the blade wall and the mesh produced a centrifugal pressure in the normal screen printing process, not only have close contact with a scraper to the process of printing products, but also, and ink pressure centrifugal rotary formed to promote peace and fight stress. Ink pressure and pressure distribution in the formation of the regional model shows. Under the same conditions, scraper scrape the ink printed on a tangent angle of the larger printing press is blowing, the ink pressure on the mesh is relatively small, and vice versa greater. The formation of ink with the ink viscosity, pressure had a great relationship. When the ink viscosity medium, rotating the centrifugal force will be well controlled, the process by the high-speed rotation into a horizontal pushing movement, so when making precision printing, the experts recommended the use of high viscosity ink.
In precision screen plate after line, often coated with low surface tension of water-based Teflon solution, dry only one-fiftieth of microns thick, does not affect the screen parameters, but it can make ink minimize friction with the wire. Low surface tension means that screen printing surface exclusion also have strong oil performance, good control of the ink under the mesh openings along the diffusion, while in the process of fast-moving scraper, the high viscosity of the ink and lubrication net surface maximum change in the form of a rotation, but will be transferred in the mesh screen on top of the ink and the excess ink on the decrease in the maximum interaction when doing precision printing, printing ink viscosity of the precision product of general larger than we thought, high viscosity ink dot on the precise lines and precision printing quality printing consistency has a very big impact.
I am an expert from China Manufacturers, usually analyzes all kind of industries situation, such as fiber optic splice tray , gigabit ethernet transceivers.
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