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How Gift box packaging manufacturer controls printing color

Aug 22,2022 Source: HC Packaging Views:

The color adjusted by Gift box packaging manufacturer often has errors with the standard color when it is used by the printing factory. This is a problem that is difficult to completely avoid. The only way is to reduce the color difference to an appropriate limit. What is the cause of this problem? How to control, how to improve the accuracy of Gift box packaging manufacturer's color matching?

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1. Printing method

Gift box packaging manufacturer mostly uses small printing machines imported from the UK. The mesh of this machine is on a flat plate, and the printing is completed by moving the printing film with a round embossing roller. The machine of the printing factory It is a round pressing method, and the mesh is on the rotating circumferential roller. The number of lines and angles of these two meshes are quite different, which makes the same ink have a lot of difference between the two printing methods. Sometimes it is not only the problem of dark color and light color, but also Hue, lightness, etc. will bring about a big difference in the effect. Some small factories use a squeegee to match the sample, which is even worse. Using the proofing machine of the plate making factory to match the color, the effect will be much better than that of the imported small printing machine, but the price is similar. This kind of proofing machine can be made into the same version of the printing factory, and can design different levels and shades of printing according to needs. Pattern, which makes the printing method basically the same as that of the printing house, and an important factor affecting the hue - the printing plate, is also the same as that of the printing house.

2. Version depth

 Different prints have different version depths. Gift box packaging manufacturer's understanding or estimation of the version depth used in the prints also affects the accuracy of color matching. Obviously, if Gift box packaging manufacturer uses a 45μm dark version to print the color, and the customer's version is much smaller than 45μm, the printed color will become lighter, and vice versa, it will become darker. Some people think that the ink is adjusted according to the standard ink control provided by the user, and the plate depth can be ignored. In fact, this is a theoretical view, but it is not the case in practice. In theory, two identical inks (such as dividing a cup of ink into two parts) have the same hue regardless of the dark and light (other conditions are the same). However, in actual color matching, it is impossible to mix the exact same ink, so there is often such a phenomenon; sometimes the color of the lighter version is closer (which can meet customer requirements), but if the dark version is printed, the color It is much worse, so it is very important to master the depth of the plate. The depth of the plate of the customer must be used to print the color matching.

3. Viscosity

The printing viscosity of Gift box packaging manufacturer's color matching should be as consistent as possible with the printing viscosity of the ink when printing the ink. The farther the two are, the greater the color difference will eventually be. Gift box packaging manufacturer uses 22s for color matching, while customers use 35s. At this time, the color must be much darker, and vice versa. Some Gift box packaging manufacturers don't pay much attention to this problem, regardless of the viscosity used by the printing factory, they will always compare the customer's standard samples (including ink samples and printed samples) with a uniform viscosity, which will cause a large color difference.

4. Printing materials

The materials used by Gift box packaging manufacturer for color matching are different from those of the printing factory (including other processes), which will also cause a large color difference. Some inks with a layer of white ink will be closer in color to the customer print, and some will be the opposite. Some ink customers do not change much after compounding, but some change very greatly, such as some transparent colors, so Gift box packaging manufacturer must know the customer's process when color matching. The most basic ones include: whether to print a white ink base, compound What material, whether it is varnished or not. Theoretically speaking, the closer the printing conditions of Gift box packaging manufacturer to the printing conditions when using the ink, the higher the accuracy of the ink. However, due to the limitation of conditions, there are still many differences between the two, such as: the printing speed, the environment for viewing colors, and the pressure of the printing roller are impossible to be unified. The accuracy of the color palette of Gift box packaging manufacturer.

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