When using a flexographic water-based ink to print non-absorbent substrates such as films and aluminum foils, first select the appropriate printing ink. Since the past gravure printing uses benzene ink or alcohol ink, the adhesion of the gravure ink is not a problem, and some films can be printed even without prior discharge treatment. However, for water-based inks, the adhesion properties of the ink are critical. In order to avoid losses, it is generally necessary to conduct a large number of tests before the official printing in order to select an ink having better adhesion, and the surface tension value of the water-based ink or the UV ink with respect to the printing material should be maintained at 38 dynes per cm or more. A dyne value test pen can be used to test the surface tension of the substrate. The Dyne test pen is a colored pen with a felt tip, draws a wet mark on the surface of the substrate, and then observes whether the wet mark will present a spherical oil film, how long it takes to form a spherical oil film, and In order to judge the adhesion performance of water-based ink on the printing material, this article will introduce you the price of flexo printing machine.
The flexo press machine personnel must carry out a comprehensive inspection of the equipment, repair, lubrication, commissioning, wiping, and wait until the workshop is inspected before it can start production next time. At the end of each month, concentrate the force on the equipment for thorough maintenance.
From the material and process of the flexo press, whether the machine structure is a uniform material, whether the main parts are made of special technology, our screen printing equipment is made of aluminum, aluminum and other aluminum materials, no one is used. The iron is easy to rust, the whole body is sprayed and sprayed, and a protective film is added to the whole body.
With the continuous development of printing technology, the flexographic printing line has no longer adhered to a single printing method, and has begun to transform into a diversified processing method that combines various printing processes and post-press processing. There are many successful cases in which a variety of processing methods such as gravure printing, screen printing, cold stamping, embossing, die cutting, etc. are added to a flexo printing machine.
When designing the ink draft, the film should be longitudinally reduced according to the above ratio, and then through the plane exposure plate making, the printed product will meet the size requirements. It should be further explained that the printing length is analyzed and estimated in actual production. The determination of R should consider many factors. For example, when the plate roller gear module is 1/8 inch, the printing length can only be increased or decreased by 3.175 mm steps; other factors also reduce the paper consumption, leaving the sticking plate. Remaining, and the limitations of machining indentation die cutting tools, etc.
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