Analysis of Three Misunderstandings in Printing Ink Deployment
Published on Dec. 11, 2019
Analysis of three misunderstandings when adjusting the compatibility of offset printing inks In the film production process, it is often necessary to adjust the compatibility of the inks used. To meet the printing needs of different products and different papers. Adjust the ink appropriately. This is achieved by adding appropriate auxiliary materials to the offset printing ink. Because people have different or biased perceptions of auxiliary materials, therefore. It is likely to enter some "misunderstandings" in actual production and produce unsatisfactory results.
1.Replace the varnish completely with a degreaser
In the production process, when printing a large-area solid plate, the ink is not easy to be evened out during the transfer of the ink roller, or when the paper "piles out" and the print is rough. Generally caused by excessive ink viscosity.
Detackifiers and varnishes can reduce the viscosity of inks, but their properties are not exactly the same. Detackifier has the property of suppressing the drying of the environmentally friendly soy ink and reducing the adhesion between the ink layer and the paper while reducing the viscosity of the ink. Dyeing oil can reduce the viscosity of ink and increase the fluidity of ink in ink. Although it can affect the drying speed of the ink layer, it is not obvious. If an excessive amount of detackifier is added blindly to the ink to reduce the viscosity of the ink, it is likely to cause the phenomenon of "print dryness" or "powder" of the ink layer. Therefore, we must pay attention to the "quantity" problem when adding detackifier, and we must not take it lightly. Keep it within the proper ratio. And at the same time increase the amount of desiccant. To avoid the above-mentioned adverse consequences.
2.Use white ink as diluent
Individual color inks need to add a diluent to the original ink to make it a light-colored ink. This diluent should be colorless and transparent. Both bright pulp and virial oil are ideal pourers. It has the effect of not changing the hue of the original ink but changing the shade of the original ink. If white ink is used as a diluent. Is inappropriate. Because the white ink has a white hue, it will change the hue of the original ink so that the original ink tends to be white and tender instead of light ink. This is contrary to the operator's original desire for light ink. And in the offset printing process. If there are too many white ink components in the ink, because the white ink pigment particles have a large specific gravity, pigment particles may pile up on the printing plate or blanket during the ink delivery process. And cause the ills of rough print.
Quick Dry Soy Offset Printing Ink
3. Does not distinguish between the different effects of anti-adhesives and de-adhesives
Adding anti-blocking agent to the ink can prevent or reduce the problem of dirt on the front and back of the printed paper. Detoxification is to reduce the viscosity of the ink, which mainly plays its role in the process of thermosetting printing ink transfer during printing. If the two are confused without distinction, other problems are likely to arise.
If a detackifier is added to the ink in order to prevent the ink on the surface of the paper from getting dirty, the "non-drying" nature of the remover will prolong the drying time of the ink layer of the printed product and conversely make the paper surface more prone to getting dirty.
On the other hand, if more anti-blocking agent is added in order to reduce the viscosity of the ink in the printing process, it will not only play a good role in reducing viscosity. It can also "roughen" the ink. It will tarnish and affect the quality of the product.