Soft printing, gravure printing, offset printing and screen printing can be used for kraft paper printing. The best quality effect can be obtained by mastering the key points of printing technology, being familiar with the printing suitability of printing ink and kraft paper, reasonably selecting and allocating ink, and controlling equipment parameters.
However, for some small packaging printing and processing plants, or just put into production and management of kraft paper packaging small plants, due to various conditions, there will be some problems in product quality. Here are some points to pay attention to in the printing of kraft paper:
Pay attention to printing color
In order to get better color reproduction in kraft paper printing, it is more difficult than SBS paper printing. In particular, it is more careful to achieve accurate color reproduction on ordinary kraft board than on bleached kraft board. Because the kraft paper itself is dark brown, the effect of printing ink is very different from that of printing on bleached paper. Therefore, it is best to use bright color ink, use more eye-catching color, so the printing effect is better. Soft color and light color are the most difficult to achieve the desired ink density, opacity and wear resistance. In addition, if necessary, you can add a little white in the ink first, it will be conducive to achieve the required soft tone or light color, which is very useful for copying soft color and light color. With the increasing maturity of printing technology, some manufacturers even use UV ink, effectively improving the printing color effect. At present, almost all ink manufacturers have developed ink for primary color cardboard, and many ink manufacturers have also developed ink for printing on kraft paper. Therefore, before determining the best plan for the work, we should consult the ink manufacturer, select different ink formulations according to the printing needs of our factory, refer to the ink chromatography provided by the ink manufacturer and the printing effect of ink on different paper, and finally determine the best ink we choose.
