First, the arrangement of color sequence:

The quality of printing and glazing has a great relationship with the color sequence of printed matter. Correct and reasonable printing color sequence allows the ink to be sufficiently dried from the inside to the outside. Reprinting the bright light on a well-dried print will not cause any problems such as stickiness and discoloration. Make the original prints more vivid and shiny.

Color order principle:

1 arrange the color sequence according to the degree of transparency of the ink;

2 arrange the color sequence from convenient overprinting;

3 Arrange the color sequence according to the original color atmosphere and requirements.

If the paper prints well, first print a large area of ground color, light color, after printing dark and small color blocks, and finally print bright oil. The gloss layer covers the surface of the color ink layer, and the surface of the ink layer is smoother and smoother. The light reflection changes from the original "diffuse reflection" to "specular reflection", and the color is vividly perceived and the texture is full.

Second, the relationship between the anilox roller and the printing plate and product quality:

As the core of flexographic printing, anilox roller plays an important role in flexographic printing. It directly determines the amount of ink and the quality of printing.

Printing color layer patterns, text, lines, ink blocks and halftone images, we must understand the relationship between the number of mesh lines and the resin plate, the number of anilox lines should be four to five times higher than the number of plates.

Otherwise, there will be white spots or incomplete dots on the dots of the pattern, causing discoloration and blurring.

(Printing layer version selects the net roller above 700 lines; the field version generally selects the 300-400 line mesh roller, the ink degree is relatively full and thick; the 250-600 line wire roller is suitable for glazing and printing gold)

When using the flexographic printing machine to print the layered version, the most difficult to solve is always the dot enlargement; the mesh roll with a higher number of mesh lines is used, the ink layer is thinner, and the dot deformation is easier to control.

As an option for the anilox roll of a plate, such as a solid line or a text, it is important to select an anilox roll depending on the amount of ink supplied. For solid printing, if the number of mesh lines of the anilox roller is too low, the ink supply amount is too large, and the ink is accumulated on the edge of the printing plate to cause ghosting of the edges of the printed product; if the number of the network wires is too high, the ink supply amount is insufficient, and the solid density is insufficient. Flowers, if the two are actually overprinted or the printed surface is small, you can select a higher number of screen lines, text, and line version to select the appropriate anilox roller according to the thickness of the line.

Different substrates have different requirements on the amount of ink, so when selecting an anilox roller, consider the amount of ink.

For non-absorbent substrates (such as PE, PP, PET aluminum foil, etc.), the amount of mesh of the anilox roller should be correspondingly high due to the small amount of ink required; for absorbent materials (such as paper, cardboard, etc.) The amount of ink to be transferred is large, and the number of lines of the anilox roller should be correspondingly low.

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