Pre-press design considerations for flexible packaging

There are many notable details in the pre-press design process of flexible packaging. Here we will discuss the considerations of small text and line design.

(1) Small text and lines should be designed as a single package to avoid inaccurate multi-color overprinting. The width of the thin line cannot be less than 0.1mm, otherwise it is easy to be lost or the stroke is unclear during printing. The clear height of the Chinese font is not less than 1.8mm, and the clear height of the English font is not less than 1.5mm.

(2) Special attention should be paid to the design of reverse text. If the text is small, especially when the stroke is thin, use monochrome. You should also pay attention to the selection of fonts. Round head, bold, etc. are the better choices, while fonts with different strokes such as Song, Old Song (horizontal and vertical) should be used carefully. With this type of font, it should be noted that the clear height of the Chinese font is not less than 2.5mm, and the clear height of the English font is not less than 2mm. Wen Yin
Poor printing overprinting 2006-09-19 09:05 Phenomenon: In the wet-to-wet overprinting, the ink printed later cannot adhere to the ink printed first.

the reason:

(1) Compared with the ink printed first, the viscosity of the ink printed later is too high.
(2) The ink printed first is fixed slowly and the amount of ink is large.
(3) The color intensity balance of the four-color ink is inappropriate.

Approach:

(1) Use ink with high viscosity to print first, and ink with low viscosity to print later. The ideal viscosity requirement is that the color of the overprint should be successively reduced.

(2) Use fast fixing ink to print, and the density is high and the printing is thinner. The pattern area is small and printed first, so as to facilitate overprinting later.

(3) The color intensity of any set of wet multi-color overprinting inks is balanced. The same amount of ink can be used for overprinting. If it is not printed with the same set of inks, it must be properly handled when used.

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