Printing high quality fine mesh products attention

Mesh product is the object of quality control of color printing process. The need to print high-quality fine-mesh products and ensure the technical know-how of the production process is of crucial importance.

1, choose the right hardness of the packing material, so that the network printing is clear and smooth.

Regardless of whether it is the embossing process printing halftone product or the typographical process printing dot, the degree of softness and hardness of the liner is an important factor that determines the dot printing effect. If the pad is too soft, dot printing can easily deform and expand. To make small outlets clear and smooth, neutral stiffer pads should be used. Insulating paper, cardboard, kraft paper, film base, etc. are rigid backing materials. The cloth, muslin, and newspaper are soft linings that are easily deformed after being pressed.

2, adjust the appropriate printing pressure.

Toppan and lithographic printing dot products require pressure to achieve a change in print. If the pressure is too high, it will easily enlarge the dots and even accelerate the wear of the printing plate. If the pressure is too small, the dot reproduction effect is poor, the dots are easily blurred, and the image quality of the printed image is poor. The printing pressure should be suitable for uniform and moderate contact between the rollers and between the platen and the printing plate (boss), so that the contact embossing is in a relatively parallel state.

3、Adjust the contact pressure of the ink roller to the printing plate, and choose suitable soft and hard roller.

The black roller is the main carrier of the ink transfer. Adjusting the proper contact pressure for the printing plate plays an important role in the quality of the dot printing. Ink roll pressure is too large, easy to make the screen mesh wear and deformation, and easy to produce paste situation. Ink roller pressure is too small, it is easy to cause the layout of ink uneven, inadequate, so that the dot printing is not clear.

4, choose the finest ink for printing.

If the fineness of the ink is used to print the dots, the ink pigments are coarse, which makes the dots of the printed product easy to produce hair, and the printing plate has a low printing durability. Ink fineness is also easy to produce paste problems. Therefore, printing dot products should be printed with high fineness ink. The fineness of the ink, the concentration of large, can make the print outlets clear and full.

5, pay attention to adjust the ink viscosity and fluidity.

The viscosity of the ink is large, which can easily cause the phenomenon of uneven ink transfer, naps on the mesh, and patterns, pastes, etc.; the viscosity of the ink is small, the ink is easily emulsified, and the layout is accompanied with floating and dirty. The fluidity of the ink is closely related to the viscosity, and the ink with a large viscosity has a relatively small fluidity. On the contrary, liquidity is great. The fluidity of the ink is too small, and it is easy to cause the coating not to be smooth and uneven, so that the reproduction effect of the printing dots is poor; the ink with too high fluidity, the easy-to-use printing dots are not full, and the resolution is poor. Therefore, when the viscosity and fluidity of the ink are not suitable, adjustments may be made by using additives such as auxiliaries and adjusting ink.

6, pay attention to choose the right paper for printing fine mesh products.

The smoothness of the paper directly determines the print quality of the dot. If the paper is poor in smoothness, you cannot use point exact reproduction. Due to the depression in the paper surface, the small dots cannot be printed, so the effect of the print quality is not necessarily good. Therefore, the printing halftone product should pay attention to selecting a paper with good smoothness to ensure the true reproduction of the original. In general, the smoothness of paper or paperboard such as coated paper and glass cards is better, and the quality of printed fine mesh products is better.

7, should pay attention to the maintenance of equipment, to prevent network printing and deformation.

The precision of the equipment determines the printing quality of the product. If the accuracy of the equipment is poor, the value of the printing dot increases, and the quality of the product is necessarily poor. Therefore, we must always pay attention to the maintenance of equipment, do a good job of lubrication of key components, such as roller gears, shaft heads, linkage imprinting devices to maintain a good lubrication state, to prevent machine parts from grinding, loosening caused by the expansion of prints, flowers Or ghosting, so that the dot printing distortion.

8, pay attention to control the appropriate printing speed, improve the accuracy of registration.

The range of speed adjustment of automatic printing presses is relatively large. If ultra-high-speed printing of fine mesh prints is used, overprinting is inconsistent and inaccurate. With moderate printing speeds, problems due to paper factors can be reduced and reduced. Improper registration error caused by the machine. Appropriate vehicle speed can keep the paper transport and delivery relatively stable and ensure the quality of printed products.

9, according to the color number of printed products, a reasonable choice of models for printing to ensure the quality of printed products.

Practice shows that according to the characteristics of the prints, choosing a suitable printer for printing is an important way to improve product quality. Multi-color overprint fine-mesh products, should try to use multi-color machine printing, in order to improve the quality of product registration.

In summary, as long as the emphasis is placed on shutting down the various technological processes in a good production process, and according to the characteristics of the product, adopting appropriate technological and technological measures can not only improve the printing quality of the product, but also effectively prevent and avoid it. The emergence of various ills increases production efficiency.


Source: PACK.CN