Carton ink printing, you must know these 20 sets of data
September 08, 2020
1. The air pressure required when the ink-and-ink printing slotting machine is turned on is generally between 6-8Kgf/cm2.
2. When adjusting the position of the paper feeder, the gap between the front door and the rear baffle is 1-2mm larger than the width of the cardboard, so that the cardboard can be stacked neatly and fall freely.
3. When the ink printing slotting machine adjusts the position of the paper feeder, the distance between the left and right baffles is slightly larger than the length of the cardboard produced by 2-3mm.
4. The gap between the paper feeding roller and the paper feeding roller of the ink printing slotting machine is 0.1~0.3mm smaller than the thickness of the cardboard.
5. When adjusting the joint depth of the upper knife and the lower knife groove of the grooving knife, it should be controlled within the range of 1.5~2.0mm. In principle, the three layers can be smaller than the five layers.
6. Regarding the maintenance of the die-cut rubber pad of the ink-and-ink printing slotting machine, the depth of the cutter should be controlled at about 1.3~1.5mm during normal use, and the debris and burrs on the surface of the rubber pad should be removed in time.
7. The most ideal pH range of ink and wash is 8.5-9.2.
8. The thickness of the steel squeegee of the ink printing machine is generally 0.15mm.
9. Flexographic printing pressure is generally between 10N/cm2-50 N/cm.
10. The commonly used specification of flexo for carton printing is 3.94mm.
11. At present, the number of screen lines commonly used to print corrugated boxes using flexographic printing is 40-80 lines/inch.
12. Generally, the number of lines of the anilox roller is 4-5 times the number of lines added to the printed product.
13. The flexible resin plate cannot reproduce the dots below 5%.
14. The endurance of the flexographic plate is between 500,000 and 1 million impressions.
15. The laser engraving anilox roller technology enables the engraving line to reach a high precision of 1000 lines/in.
16. When the pH value is lower than 8.2, the viscosity of the water-based ink will increase and the drying will speed up.
17. The pH range of some special water-based inks is different from ordinary water-based inks. The pH value of gold and silver inks is 7.5~8.0.
18. The general usage of pH stabilizer is to add 1 to 2% of the total ink volume every 30 to 40 minutes and stir evenly, or add the stabilizer to the circulating ink pump.
19. In ink printing, the addition amount of defoamer generally does not exceed 0.5%.
20. When surfactants are added to inks, the addition ratio should not exceed 2% at most.
