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Precautions for design of plastic bag packaging before printing

by:FAST SINCERE     2019-12-10
There are many noteworthy details in the pre-printing design process of Shenyang plastic bag packaging. Here, we will focus on the following points for attention. 1. Seamless connection design of continuous patterns, in the design process, sometimes encounter the problem of continuous patterns, many people deal with such problems, or use local transparency effect (That is, the film is not printed on the film) To make up for the inaccurate cutting, or use the same color block on the edge of the bag. In fact, this is also good, but sometimes it will destroy the continuity of the pattern and lack of beauty. The design and production of continuous patterns should take into account the size, shape, continuity and other factors of the patterns. Only when the patterns are suitable can better results be obtained. When imposition, the seamless connection between the pattern and the pattern is guaranteed, and the continuity of the overall pattern will not be affected when cutting. 2. The use of transparent ink has low hiding power and high transparency. Films printed with transparent ink are generally compounded with aluminized films, so that the metallic luster of the aluminized film and the luster of the ink are combined with each other to reflect brighter colors, and are observed from different angles, the hue will have more obvious changes. When observed under different light sources, the difference will be greater and it has a good shelf display effect. 3. The problem of increasing the front pattern, in many design cases, involves the problem of increasing the front Pattern. For example, the pattern and color of the front and back of the back pocket are often different, in the design, it is necessary to deliberately increase the front pattern to the back, to avoid the back pattern appearing on the front of the bag when there is deviation in the bag making process, affecting the main visual surface (Positive)The integrity of the pattern. 4. The arrangement of the color sequence, if the intaglio printing process is adopted, the color sequence should be from deep to shallow, and the color sequence of the surface printing is just the opposite. In the case of spot colors, the color order of spot colors should be determined according to the brightness of spot colors to improve the overprint accuracy of the overall pattern. 5. Small text and lines (1) Small text and lines should be designed in monochrome to avoid multi-color overprinting. (2)The width of the thin line cannot be less than 0. 1mm, otherwise it is easy to be lost or unclear in printing. (3)The net height of Chinese fonts shall not be less than 1. 8mm, the net height of English fonts shall not be less than 1. 5mm. (4) Special attention should be paid to the design of highlighted characters. If the characters are small, especially when the strokes are thin, monochrome should be used. The choice of fonts should also pay attention to the round head body, bold body, and equal line body is the better choice, while the song body, the old song body (Horizontal and vertical) Fonts with too many strokes should be used with caution. If such fonts are used in design, the net height of Chinese fonts should be no less than 2. 5mm, the net height of English fonts is not less than 2mm. 6. Transition Network (1) If you want to print white text on the Transition Network, the Transition Network should be designed as a spot color to avoid overprinting. (2) When the dot area ratio of the Transition Network is less than 30%, use the anti-white word with caution. (3)Use some colors (Such as black, dark green, dark purple, etc) The designed Transition Network, when its dot area ratio reaches 70% ~ At 85%, it is difficult to obtain a smooth and bright transition effect, and serious water-like spots often appear. 7. Large area color block (1) When screening large-area color blocks, avoid 70% ~ 85% this range, otherwise there will be irregular dirty spots. (2) When the dot area ratio is below 10%, it is easy to cause dot loss in the printing process. (3) If you want to print anti-white characters and lines on a large area of color blocks, pay attention to the color blocks that are not too bright, such as light yellow, light orange, etc. , otherwise the characters and lines are not easy to read.
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