Points needing attention in the printing of the ho

Key points to pay attention to in the printing of 20 PVC labels

release date: Source: Internet editor: lychee browsing times: 3772 copyright and disclaimer

core tip: printing process is one of the important factors affecting the specification design of PVC labels. Due to the uneven basic thickness and poor flatness of the PVC substrate used for printing, it brings many difficulties to printing. The annual consumption of plastic bottles has been growing steadily to avoid printing defects. The following points should be paid attention to

[China Packaging News] printing technology is one of the important factors affecting the specification design of PVC labels. Due to the uneven basic thickness and poor flatness of the PVC substrate used for printing, it brings many difficulties to printing. In order to avoid printing defects, the following points should be paid attention to

1. Avoid lines thinner than 0.1mm

2. Avoid riding color characters (that is, anti white characters are composed of two colors). In this case, a black edge or an edge of other colors is added with the permission of the customer. But the width of the side line is greater than 0.25~0.3mm

3. Generally, the line width shall not be less than 0.3mm, and the color shall be expanded to the middle of the line

4. In case of three or more colors overlapping, try to modify it into two colors and spot color

5. It is best to use spot color for large-area background color, and avoid printing with color separation, which is easy to cause color difference, especially blue and yellow, red and yellow

6. The lowest critical value of any color is 20%

7. The reverse white edge of the text is generally thickened to about 0.3mm

8. The edition depth of special green edition, special purple edition, pearlescent edition, matte edition and white edition must be greater than 45 μ That is, there should be a special ground wire M

9. The yellow version can be made into addition or edge virtualization when necessary, for example, when yellow, red and hollowed out words or yellow and red overlap words

10. The bar code is generally perpendicular to the horizontal direction, that is, it is placed vertically, so as to prevent the deformation during contraction, resulting in unrecognizability or misreading

[pagebreak]

11 if the output voltage of the amplifier is unstable The bar code is generally more than 5mm away from the palm edge to prevent shrinkage and deformation

12. When the white version is expanded, the upper and lower parts can be expanded by 0.3mm, and the left and right parts can be expanded by 0.4mm

13. Try to avoid gold words, silver words and color anti expansion, which will give people the feeling of dirty edges

14. Avoid using gold and silver plates for transition, and the transition effect is not obvious

15. When arranging the color sequence, in addition to adhering to the principle of putting the three primary colors of C, m and Y together, we should also pay attention to the two colors that are difficult to color water molecules with a large degree of blue display. The closer the two colors are, the better

16. All points less than 10% in the electrical diagram should be removed, because the ink of points less than 10% cannot be transferred

17. When it is difficult to register colors, it is better not to use more than 2 pieces of horizontal sample plate or use film door width not more than 600mm. When the door width of PVC film exceeds 650mm, its thickness and straightness are more difficult to control, which often leads to many defects and brings difficulties to printing

18. When printing figures, the printed substrate is preferably newly produced, with few missing printing points, because there is no additive precipitation on the surface of the newly produced film

19. Relevant words, bar codes, marks and trademarks must comply with relevant national regulations

20. The position of effective pictures and texts is generally controlled within the tolerance of XMM under the folding diameter to avoid being covered when the palm is closed