Offset printing ink thinner, in the printing of the golden field and thick lines, often using two consecutive printing or two step by step printing process to semi-strong ink layer saturation and metallic luster effect. Silver ink printability is better than gold ink, just a printing can basically meet the requirements of general packaging printed matter, if you need a large area of silver or the use of paper is poor, you need to take two printing , To a good show of silver luster. In the offset printing machine on the printing of gold (silver) ink should pay attention to the following matters....
1. Select the end of gold and gold (silver) ink
2. In the background ink on the Indian gold (silver) ink
The quality of the background printing quality is an important factor in determining the quality of gold (silver) ink printing. Therefore, the layout of the printing background ink should be flat, the viscosity of the background ink should be high, the drying property should be moderate and the ink layer should be thick. The drying method of the background ink is suitable for the combination of osmotic drying and oxidative conjunctival drying.
India gold (silver) ink, the background ink layer should not be completely dry in the case of overprint, or prone to gold (silver) ink is not printed, or poor adhesion fastness, a rub on the phenomenon of shedding.
3. Overprint the other ink on the gold (silver) ink layer
Gold powder in addition to its own metallic luster, the more important is the surface of the light has a reflection effect, if the gold ink layer above the printing of other colors of ink, it will affect the gold layer of metallic luster effect. Therefore, in the printing process design should take this into account, make full use of gold ink opacity, hiding power and other characteristics, reasonable arrangements for printing color order, as far as possible the arrangement of gold in the last color order. If you must be in the gold ink on the overlay of other colors of ink, graphic area should be as small as possible, this will not affect the effect of gold ink, but also better prevent the printing of bad prints and other ills.
Contact: Robin Sun
Add: 7/F, Block 5, HaiTangYuan, XiaoBian St, Changan Town, Dongguan, GuangDong,523850 China