What is ink crust? When the ink in the ink fountain in the printing process forms a thin film due to the skin drying, this layer of film will adhere to the barrel, causing unevenness of the layout, resulting in contamination of the printed matter and seriously affecting the quality of the product.
What causes the ink conjunctiva? There are many causes of ink conjunctiva. The more common ink conjunctiva are:
1, the ink drying too fast to produce a conjunctiva
2, poor ink flow, ink quality is not qualified,
3. The ink system is volatilized, either evaporated or air-oxidized to form a thin film.
4. The structure of the ink tank or the ink tank is not good, and the non-flowing retained ink is formed by dry air drying to form a crust.
So how can we prevent and prevent ink conjunctiva? Experienced printing operators have summarized the following experiences in preventing and preventing ink conjunctiva for your reference:
1, can not use fast drying ink;
2, add add slow dry solvent,
3, replace the ink has been degenerate, buy high-quality ink fountain and ink,
4, stirring in the ink fountain to enhance the fluidity of the ink.
5. Add a sealed lid to the ink fountain to prevent it from entering the air.
6, adjust the angle of the hot hair dryer, there are people who have experience in printing, when the dry speed is too fast, or the ink concentration is too light, or poor flow, or ink thixotropy, or ink static, it will take to adjust the printing machine speed The method not only prevents the ink from drying on the printing plate earlier, but also overcomes the crust formed by the film forming the packaging printing ink, and eliminates the marking failure of the graphic.
Packaging printing ink dry skin and preventative measures
September 19 07:02:12, 2024
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