Matters needing attention in the production and printing of kraft paper bags1

In the process of making and printing kraft paper bags, in order to make the color reproduction have a better effect, it is actually more difficult than printing with SBS paper. In particular, accurate color reproduction on regular kraft board requires more care than printing on bleached kraft board. Since the color of ordinary kraft paper in the production of kraft paper bags is dark brown, the effect of printing ink is very different from that of printing on bleached paper. Therefore, the ink used needs to be bright in color, and the color used should be more eye-catching, so that the printed kraft paper bag has a better production effect, and it is difficult to achieve the desired ink density, opacity and wear resistance with light and soft colors. .

In addition, if necessary, adding a little white to the ink for printing on kraft paper bags will help to achieve the desired pastel or tint, which is very useful for replicating pastel and pastel colors . With the increasing maturity of kraft paper bag making and printing technology, manufacturers will use UV ink to effectively improve the printing color effect. At present, almost all ink manufacturers have developed inks for primary color board, and many ink manufacturers have also developed inks for printing on kraft paper. Therefore, before determining the best plan for the work, you should consult the ink manufacturer, choose different formula inks according to the printing needs of the kraft paper bag manufacturer, refer to the ink color spectrum provided by the ink manufacturer and the printing effect of the ink on different papers, and finally determine your own. The best ink selected.

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