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Bags made of ink color is there a difference? How old are?

by：Kolysen 2020-12-21

In printing ink ink is not consistent, that is, different time slot ink viscosity is different, the amount of ink on the sizes. In the whole process of intaglio printing, to maintain relative stability of the ink viscosity and consistency. Note is that the ink viscosity change, often affected by the conditions of temperature change. Choose the ink color have difference to solve the problem of plastic film gravure ink on color difference, be about to choose has stable quality, color deviation or small deviation of gravure ink. Fixed a variety of printing, it is better to use a certain manufacturer production of ink, a batch of printed matter, it is best to use the same manufacturer, the production of the same batch of ink. Ink circulation is not smooth to keep the ink circulation fluid, had better use ink circulation system, ensure to add thinner, convenient and add new inks, keep the ink with good quality and liquidity. Printing speed and ink drying speed inconsistent printing speed and ink drying speed, directly affect the print ink rate, so the change of the printing speed and ink drying speed, can cause the change of prints of the ink color. Scraper improper use the position of the scraper, the Angle of the blade, the pressure of scraper and embossing roller pressure to inky, especially shallow the color of the ink level parts have great influence. Composite process of different different composite processing technology, welding heat sealing bag making wide edge, the compound layer film composite with different colors, or printed directly after vacuum aluminum plating processing, also have certain influence to the color of the print.