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What about Flexo printing? Flexo printing ink proofer applies transfer printing, which greatly saves your expenses?

April 20, 2021

Flexography combines the advantages of letterpress and offset printing without the disadvantages of these methods.

As the name suggests, "Flexo printing is a method of highly direct rotary printing of elastic (flexible rubber, photopolymer) impression plates, which can be mounted on plate cylinders of various sizes. With the help of cylinders interacting with doctor blades or Screen rollers, which are covered with liquid or paste fast-drying (water soluble, volatile solvent) printing inks and transferred to any type of printed material, including non-absorbent materials.The image on the printed form is a mirror image.

A flexographic printing press is a printing press in which a major number of printing units work on the basis of the flexographic printing method.

Since this printing method initially (at the beginning of the last century) used aniline synthetic dyes, it was called "aniline printing" or "aniline rubber printing".


Flexo printing as a traditional form of letterpress printing differs from flexographic printing only in the hardness of the printed elements. Even a slight difference in physical properties such as "hard elastic" leads to a significant increase in the range of flexographic printing compared to letterpress printing, although in principle the two printing methods are the same.


In order to obtain high-quality prints in letterpress printing, it is necessary to ensure intimate contact between the printed elements of the form and the receiving surface of the printed material. This can be achieved by elastic deformation of the mold elements or pressure surfaces. For solid printing plates of the traditional letterpress printing method, there is almost no elastic compression even under high pressure. The elastic compression is necessary to make up for the deficiencies of the printing plate, the printing surface and the impression surface. The main disadvantage is that the contact surfaces are uneven, creating pressure between the contact surfaces that is necessary to transfer ink from the form's printing elements to the printing surface.


Therefore, in order to obtain a high-quality impression, elastic washers, edge holders, are placed between the pressing surface and the receiving surface. The same considerations lead to the need to use seasonings.

The development of printing and plate making technology mainly has three directions: flexible packaging printing, label printing and direct printing of finished corrugated cardboard.


In these three aspects, different printing plates are used according to the substrate used, the pressure pad or tape, the printing plate material, thickness and hardness, the swelling resistance of the printing plate in the ink solvent, quality requirements, material compatibility and design printing presses.


                                                                                                               ----------------Wuhan Bonnin Technology Ltd.