Flexographic printing presses use fluid inks that are highly fluid. The ink is transferred to the graphic part of the printing plate and inked by the ink fountain roller and anilox roller. Then the printing pressure is applied by the pressure roller to transfer the ink on the printing plate to the substrate, and finally the printing process is completed by the dry side.
The flexographic printing machine consists of a line-connected flexographic printing machine and 4-8 mutually independent printing units, arranged horizontally and driven by a common power shaft. Unit flexo presses only support one printing unit per pair of plates, so unit flexo presses can be designed to accommodate different drum heads.
The main advantages of flexo printing machines are:
(1) The unit is easy to install and assemble, and the post-press processing is easy.
(2) Suitable for short-run printing.
(3) By changing the running route of the material belt through the guide roller, double-sided printing can be realized at one time.
Flexo Printing Machine Features
The reason why the flexographic printing machine develops at a constant speed, in addition to the technological breakthrough of the plate and ink, its own characteristics are an important reason to attract users.
1. The machine has a simple structure and is easy to operate and maintain. The price of a flexo press with the same function is about 30-50% of an offset or gravure press.
2. The genetic material has strong adaptability, and can obtain satisfactory printing results from 0.22mm plastic film to 10mm corrugated cardboard.
3. The embossing force is small, about 19.6-39.2N/cm2, especially suitable for printing corrugated paper and other substrates that cannot withstand excessive pressure.
4. The printing cost is low, mainly because the machine price is low, the plate making cost is low, the paper loss rate during the printing process is low, and the production cost is 30-50% cheaper than gravure printing.
5. The print quality is very good. The inking system with short inking path of the anilox roller not only simplifies the structure of the inking system, but also can realize quantitative control of film thickness. The breakthrough in high-performance photosensitive resin plate technology has greatly improved the resolution and dot reproducibility of the printing plate (up to 1-95%). Flexo printing can achieve 300 lines/inch color level printing, and the printing effect is comparable to offset printing and gravure printing.
Printing Sample
