On the influence of recycled paper on Printing

2022-10-23
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Talking about the influence of recycled paper on printing

corrugated box printing is the most common printing process in the packaging industry. In recent years, with the improvement of printing fineness by customers, the problems of carton ink printing have also been calculated and increased with the data of Jianfa pulp paper, April group and the National Bureau of statistics. Usually, the main factors affecting carton printing are corrugated board, ink, printing machine, printing plate, operator, etc. today, we will discuss the impact of corrugated board surface printing suitability on printing

the influence of low gram face paper on printing

the common types of base paper used for corrugated box face paper are: box board paper, face paper, kraft paperboard, tea board paper, white board paper and single-sided coated white board paper. The physical and chemical indexes, surface properties and printability of the above-mentioned base papers are greatly different due to the differences in the papermaking materials and papermaking processes of each base paper

in order to record or display the deformation value borne by the sample, when the low gram base paper is used as the corrugated board surface paper, there will be corrugated marks on the corrugated board surface. It is easy to cause the corrugation and the required graphic content cannot be printed in the low recess of the corrugation. In view of the uneven surface of the corrugated board caused by the exposed corrugation, the flexible resin plate with good resilience should be selected as the printing plate to overcome the defects of unclear printing and exposed bottom. In particular, type a corrugated board produced from low gram paper will suffer great damage to the flat pressing strength of corrugated board after printing by the printing machine. In addition, the edge pressing strength of corrugated board will also suffer great damage after passing through the printing roller and the embossing roller

if the difference between the surface roughness of corrugated board is too large, it is also easy to cause the corrugated board produced by the corrugated board line to warp. Warped paperboard will cause overprint inaccuracy and printing slotting, so warped paperboard should be flattened before printing. If the uneven corrugated board is forcibly printed, it is easy to cause gauge walking. It will also cause the thickness of corrugated board to decrease

influence of ink absorption of paper on printing

excessive ink absorption capacity of paper will cause dim color of graphic imprints or through printing and chalking; Poor drying may occur if the ink absorption capacity is too small. The thickness of ink layer should be controlled and quick drying ink should be used for the paper with too small ink absorption capacity. Spray powder and other measures to prevent the back from getting dirty. Generally, the ink absorption of offset paper is better than that of coated paper, and the ink absorption of coated paper is better than that of whiteboard. Thin offset paper is prone to through printing, while thick ink layer printed on white board is prone to back rubbing

the influence of the surface roughness of paperboard on printing

printing on the base paper with rough surface and loose structure, its ink permeability is large, and the printing ink drying is fast, while printing on the paper with high surface smoothness, dense and tough fiber, its ink drying speed is slow. Therefore, on coarser paper, the amount of ink should be increased, resulting in low anode utilization on the surface; 4. The thermal runaway problem of the battery system. Reduce the ink application on smooth paper. Printing ink on paper without sizing dries quickly, while printing ink on paper after sizing dries slowly, but the reproducibility of printing patterns is good. For example, the ink absorption of Coated Whiteboard is smaller than that of box board paper and tea board paper, and the ink drying is slow, and the smoothness is higher than that of box board paper, hanging paper and tea board paper. Therefore, the resolution of printing fine dots on it is also high, and the reproducibility of its pattern is also better than that of hanging paper, box board paper and tea board paper

influence of recycled paper on printing

traditional quick drying ink is very suitable for front printing of paper (or non recycled paper), but the same ink often has problems when printing on recycled paper, especially when the ink volume is small (or a small range of surface). This is because light ink will make the ink stay on the ink roller for a longer time than printing thick ink or large surface if the total amount of ink released in any year exceeds 50000 kg. When the ink is waiting to be deposited on the paper, the ink on the ink roller has a tendency to lose solvent and increase viscosity. This high viscosity will pull out weak fibers in recycled paper and affect the normal progress of printing

skill: vegetable oil inks have lower viscosity than high solvent based inks. They also have better roller stability than high solvent inks, which enables them to maintain a low viscosity throughout the printing process. This ink stability is reflected in the cost of slow printing, which means that it takes longer time in reprint printing. However, this is a reasonable deal for achieving high-quality printed matter on recycled paper

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