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November 04, 2024

1. Insoluble or insoluble in foaming solution In order to break the foam, the defoamer should be concentrated on the foam film. For defoamers, they should be concentrated and concentrated in an instant, while for foam suppressants, they should be kept in this state regularly. So defoamers are in a supersaturated state in foaming liquids, and only insoluble or poorly soluble ones are prone to reaching supersaturation. Insoluble or difficult to dissolve, it is easy to aggregate at the gas-liquid...

November 01, 2024

With the large number of high-security documents such as checks, banknotes, passports, and credit cards being forged, industry has been looking for new technologies in the optical field that can successfully protect documents from being copied. Optical color-changing inks have this feature, which successfully protects high-security documents from being forged. Today, in terms of passports or credit cards, more than 50 countries around the world use anti-counterfeiting technology with color...

October 28, 2024

If you want to add special effects for offset jobs during the printing process, you can use fluorescent inks in the four-color printing process. In this way, the printed images can emit brilliant light. Fluorescence lets images jump In the offset printing process, fluorescent inks can be used in a variety of ways. For example, if you can add 25% to 50% of the pink fluorescent ink in the ordinary magenta ink, the image of a pink balloon will become more prominent. Since the fluorescent ink is...

October 01, 2024

China has been producing ink for a long time. The predecessor of ink was pine ink. China uses pine smoke, glue (mainly cowhide glue, which plays a role in bonding cigarette ash), and water to make black ink. Started as a writing tool and later used in the woodblock printing industry. Ink developed rapidly in the early stages of China, but after the Middle Ages, it remained stagnant and satisfied with traditional secret formulas, lacking creativity. At that time, wooden printing in Europe was...