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What ink is heated And how to avoid
Using double scraper inking system wide satellite flexo machine, and also is the use of liquid ink. They almost didn't happen this kind of failure, it is because he USES the totally enclosed cavity scraping blade, there are two spatula, truly a reverse with the function of scraping scraper, another put forward scraper play a role in the ink. Ink only in a closed cavity flow, scraper is still recommended related: machine blades and gravure is single blade must be around the axial displacement, and places a certain force on the blade, to resist ink scraper, flexo ink on principle, is actually for gravure provides a train of thought to solve the problem, since the gravure temporary does not pay attention to loss problem, satisfied with the ink pollution fault occurred after the captain will be able to solve, and not to prevent from fountainhead, pinned on a line of the duty of reducing wear and tear the captain, since it is temporary work gravure grief.
Serious when hue will be some changes, "albino" is mainly refers to the solvent ink contains moisture content on the membrane lose luster. Actually analysis from the aspects of material supply, solvent containing moisture probability is not high, not all solvent containing moisture is impossible there is always a certain percentage, the purity of solvent used in the printing process, the water there is always a tolerance not haggle over every ounce.
Kerry had seen an enterprise in plum rains season with new ink printing, printing ink of bleaching are often used with ink absorption in the environment in the process of large amounts of water. Began two hours to print color did not change, but after 2 hours, because the ink layer gradually, printing quality lose luster, to replace the new ink talent back to normal. Gravure when using alcohol soluble ink on the environment will have some special requirements, such as ambient humidity can not be too high, otherwise the ethanol will absorb moisture from the environment, so to device workshop constant temperature and humidity, temperature control at 25 ℃ or so, humidity no more than 70% to prevent ink bleaching
The author advocates from solvent adjusted for water caused by bleaching. The humidity is higher, with some small water imbibition alcohol solvent instead of ethanol. , of course, with air conditioning refrigeration smoke wet to improve the workshop environment is also a way to, but I don't believe, calculated from the interest, too wasteful
Ink will be along the tangent directions version of roller on the film, ink pollution mainly printing speed increase. , gravure printing quality loss protection facilities is down to the bottom of the scraper splint device on a block of ink board, but this setting cannot be depending on the version of the roll diameter and automatically adjust the position of the ink, so Ink will follow the version on both ends of the roller rotating tangent to fly. The pilot-in-command in almost all gravure press printing unit around both ends with two pieces of paper, drag on version of roller for damper. Positive on the single blade gravure ink system of ink on version of roller tangent directions, design is flawed in itself is not can't solve this problem, the author use brush structure is adopted for Germany inkjet intaglio printing machine, this kind of failure is much less.