What is the practical meaning of the Flexo printing machine?

At present, flexographic printing has become the fastest growing printing method in the packaging printing field. With the continuous expansion of the application range, the market scale of Flexo printing machine will continue to expand in the future.

What is the action mechanism of Flexo printing machine dryer?

The drying device of Flexo printing machine is generally divided into two parts: one is the inter color group dryer distributed among the printing units, and the other is the bridge dryer after completing the printing of each color group. The dryer between each color group is installed between two adjacent color groups. For example, the dryer of the first color group is installed between the first and second printing units. Its function is to ensure the needs of wet stacking process in the printing process of Flexo printing machine. The ink surface of the printed matter dried by the dryer has formed a film, but it is not completely dry. Therefore, the n-color Flexo printing machine needs to be equipped with n-1 inter color group dryers. After the printing of the last group of printing units is completed, overprint is no longer required, so this kind of dryer is generally not added and directly enters the bridge dryer. The bridge dryer is actually a drying channel designed according to a certain length. It is called because it is located between the central embossing drum and the winding device, which is very similar to the bridge connecting the two parts.

What is the current usage of Flexo printing machine?

Flexo printing machine include satellite flexographic printing presses, unit flexographic printing presses, stacked flexographic printing presses, combined flexographic printing presses, and other forms of Flexo printing machine, among which satellite type and unit type flexographic printing presses are relatively large , The total market share of the two reached 75%. From the perspective of the application market, packaging and decoration printing is the main application field of flexographic printing. Among them, corrugated packaging printing has the highest proportion, reaching about 30%, followed by flexible packaging printing, which accounts for about 22%, and the third is trademark Label printing, applications accounted for 18%.

What should I pay attention to when using Flexo printing machine?

Flexo printing machine uses the light in the UV ink, and both the initiator and the pigment absorb the energy of the UV light. Studies have shown that different pigments in the ink have different ability to absorb UV light. Creamy yellow and magenta flexographic pigments can be cured by absorbing a small amount of UV light, so their drying performance is good; while cyan and black flexographic pigments have to absorb more The UV light can dry and cure and save energy.

In addition, avoid excessive light when using UV and UV/EB flexo printing inks. Because the UV flexo ink is exposed to UV light, the remaining (underreacted) photoinitiator will continue to react for 6-24 hours, which is the so-called post-polymerization reaction. If there is too much light at the beginning, the UV ink film will become harder and harder, until it is brittle, and the quality of the printing should be improved and the subsequent processing cannot be carried out.

ZHEJIANG GREENPRINT MACHINERY CO.,LTD, maintains close relationships with customers in Flexo printing machine industry, and is committed to strengthening production and operation, improving quality and safety.