Experience sharing: talk about high quality gold and silver ink

I have noticed that some suppliers even have some articles when it comes to the use of gold and silver inks. Printing plant printing speed was reduced to 3000 to 5000 / hr, or that occur after use of gold, 300 to the printing unit 400 on the silver ink piling is normal. In fact, the printing performance of high-quality gold and silver inks is the same as that of general four-color inks, and it has a relatively stable dot gain, which gives designers more design space. They don't have to worry about gold, silver and four-color design. Together, it can cause trouble in the printing process, because high-quality gold, silver ink and four-color inks can achieve special effects on the same printing machine.

At present, the market is dominated by cheap and inferior gold and silver inks, which makes it impossible for printing companies to simply consider the price/performance ratio when choosing gold and silver inks. It is also necessary to consider that enterprises will not be able to satisfy customers due to the use of low-grade gold and silver inks. Requirements, resulting in the loss of orders. Therefore, how to rationally distinguish the quality of gold and silver ink is very important, the following is some of the author's experience sharing, I hope to help you make a wise "cost-effective" choice.

The main raw materials for high quality gold and silver inks

1. The main raw material of high quality gold ink

The main raw material of high-quality gold ink is high-quality gold powder (copper powder), which is made of anode pure copper with a purity of 99.95% and 99.70% zinc ingot. It is made by grinding at a low temperature for a long time by a large grinder. After the high-quality gold powder is made into a gold paste with special binders and additives, it can be used to produce gold ink suitable for printing.

2. The main raw materials of high quality silver ink

The main raw material of high-quality silver ink is high-quality silver powder (aluminum powder), which is dissolved in an aluminum ingot with a purity of 99.70% after being dissolved at an extremely high temperature, then subjected to atomic splitting and then extruded by a grinder. After using high-quality silver powder with special binders and additives to make silver paste, it can be used to produce silver ink suitable for printing. Silver powder is an extremely dangerous and explosive material, so the above treatment process and corresponding equipment are extremely expensive.

It should be noted that if recycled scrap copper and scrap aluminum are used as raw materials for gold and silver powder, the impurities contained therein will affect the color, shine and stability of the finished ink.

Precautions for the preparation of high quality gold and silver inks

As mentioned above, high-quality gold and silver inks need to use high-quality gold and silver paste as raw materials. Since the raw materials used in gold and silver paste are easily oxidized, the preparation process of high-quality gold and silver paste must be carried out under a full vacuum environment. This is because during the pulping process of gold and silver powder, there is a process of dispersing and agitating the binder and the auxiliary agent. At this time, if it is carried out in a non-full vacuum environment, a large amount of air is in contact with gold and silver powder, causing oxidation thereof. Moreover, since gold and silver paste contain more oxygen, the finished gold and silver inks slowly dry and solidify in a vacuum tank in just two or three months, and then harden. This will not only affect the brightness of gold and silver inks, but also damage the plates and ink rollers due to the hardening of gold and silver inks.