Ink Scraper Blade pressure on the quality of printed materials will have a very important impact, the size of the pressure can be based on the depth of the hole and graphic level to adjust. If the plate cylinder is too long and is corrosive, the applied pressure is greater. Because the corrosion intaglio network hole deep, but the edge of the pattern prone to glitches and other phenomena. But the pressure is too large and easy to shave the ink in the shallow mesh, causing the shallow part of the print does not come out; and too much pressure will make the contact angle smaller, it is difficult to scratch the layout of the excess ink, resulting in squeeze the ink accumulation, Knife line. Under normal circumstances, good working conditions of the scraping system, the contact angle of about 60 ° is appropriate.
Ink Scraper Blade pressure is too light does not work, will produce hair drag and other failures. The solution is appropriate to the blade edge of the Scraper Blade and the printing plate interface at the hair, hair can be used with special hair dryer facilities.
Ink Scraper Blade after a period of time there will be burrs, cracks and other phenomena, scrapets can not work effectively, then you need to sharpen or replace the new ink Scraper Blade. In actual work, sometimes Scraper Blade rupture phenomenon, you can polish or pad method to extend its service life, one to save the use of ink Scraper Blade costs, and secondly can also solve the corresponding quality failure.
Ink Scraper Blade loss is mainly caused by the role of scraping, determined by the different conditions. Sometimes it may be because the installation of the doctor blade problems, and sometimes may be due to the adhesion of the resulting, in the use of different methods when the results are not the same, the specific circumstances of the loss to see the following description!
First, with the installation of ink Scraper Blade
Second, different ways to use different results
1, due to adhesion produced
In the Scraper Blade and plate roll between the two surface contact, tiny particles produced by the shear movement caused.
Due to the failure of ink separation caused.
2, abrasive wear
Whenever there is a hard material between the Scraper Blade and the plate roll, there is a loss due to its friction.
The gravure ink forms agglomerates.
Some inks, such as inorganic inks, are itself more polished than other inks.
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