Long Knowledge! Quality Tipping Paper Gravure Ink Has So Much To Pay Attention To!

Long knowledge! Quality Tipping Paper Gravure ink has so much to pay attention to!

Plastic gravure printing ink is a volatile solvent ink, usually composed of pigments, linker resin, resin, additives, fillers and volatile solvents, etc. In the process of gravure printing, gravure printing ink there are many places to pay attention to. Long knowledge! There are so many dainties!

Gravure printing ink must have the characteristics

During Quality Tipping Paper intaglio printing, the intaglio roller fills the surface with ink as it rotates, and the ink scraper removes the ink from the non-graphic parts of the plate roller, leaving only ink for the graphic parts. Then through the printing will be part of the ink transfer to the printing film. From the point of view of this printing process, gravure ink must have the following characteristics:

1. The working ink is a thin fluid with good fluidity, which is easy to fill in the mesh on the plate cylinder.

2. Ink has good scraper suitability, that is, it is easy to scrape the ink on the surface of the non-graphic part of the ink.

3 ink has enough cohesion to prevent the printing plate cylinder tells the operation of centrifugal force imbalance.

4. The working ink has good transfer, overprinting and good viscoelasticity, that is, the ink in the plate cylinder net hole is easy to transfer to the printing film and has been printed on the front color ink and the image, text, line dot is not easy to spread out larger.

5. After the ink is transferred to the printing film, it has good fluidity to ensure the formation of smooth ink film.

6. Working ink through solvent volatilization and rapid drying, its drying speed and printing speed.

7. The working ink has certain resolubility to ensure that the part not transferred in the mesh can be re-dissolved into the working ink system.

The performance of gravure printing ink should first meet the needs of the gravure printing process, and the ink film transferred to the film should adapt to the subsequent process and various conditions of use during the use of the printing ink film and stimulation.

Unadjusted ink (original ink) and can not directly meet the above requirements, before use according to the ink ink and actual process needs to adjust to work ink (work ink). Although the inking of the original ink limits and determines the adjustment space of the working ink, this adjustment is still very important.

Various quality indicators and performance requirements of plastic gravure ink have been clearly specified in QB/T 2024-2012 and other related standards. However, the standard only gives the basic requirements, in line with the national standards can not fully show that the ink has a good printing suitability.