Manufacture Package for you really want.

The quality of paper bag printing depends on the printing process

by:FAST SINCERE     2020-01-18
Fine workmanship and skilled operation are very important for paper bag printing, which deeply affects the quality of paper bag printing. It is also the key for manufacturers to obtain the paper bag printing market. Below we will share some skills in paper bag printing process from three aspects: Pigment, connecting material and drying time. 1. The size and dispersion degree of pigment particles, although the function of ink film capillary is an important factor to form gloss of printed matter, the apparent size of pigment particles in the dispersed state is more important, it directly determines the state of the ink film capillary. Therefore, the pigment particles are small and well dispersed, which is conducive to the formation of a smooth ink film and is also very beneficial to improving the printing luster of paper bags. 2. The viscosity of the binder and the content of the pigment, according to the principle of interfacial chemistry, the capillary permeation velocity is inversely related to the liquid viscosity, that is, the permeation velocity decreases with the increase of viscosity. The capillary network structure formed between ink pigment particles is an important aspect that determines the gloss of printed matter. At the moment of embossing, the ink is pressed into the larger pores of the paper as a whole; After embossing, the binder begins to separate from the ink and penetrate into the smaller pores of the paper. Therefore, the size of the ink film capillary determines the separation amount of the binder. The effect of capillary retaining binder is much greater than that of printing pressure pressing binder into paper pores. 3. Drying time the rapid drying of the ink film on the paper surface can reduce the amount of connecting material penetrating into the pores of the paper, thus improving the gloss and smoothness of the ink film. The high gloss of the ink film means that the specular reflection of the surface is relatively high, so that the human eye can see the white light reflected by the surface in most cases is much less than the ink film with low gloss, make the color saturation higher. Therefore, the prints with high gloss look more colorful and full. The printing ink layer of spot color ink is mostly translucent or opaque. When selecting the ink formula, the influence of the light transmittance of the ink layer on spot color printing should also be considered according to the actual situation.
Custom message
Chat Online 编辑模式下无法使用
Chat Online inputting...