Printed corrugated cardboard with offset printing, can obtain bright colors. Delicate level, but there are also some problems. When printing corrugated cardboard paper with an offset printing press, the design requirements are relatively loose, but the following points need attention.
(1) The density distribution of continuous patterning should be uniform, and the hanging net angle should be distinguished by color. The main body color should be the primary color or the inter-color. If you can use the spot color, do not design it as a multi-color overlay.
(2) If there is a large area of overprint, do not design the fine pattern or text of the same color overprint. If you need hot stamping, the design of the hot stamping area should not be too large, so as not to cause the stamping leak due to false pressure; hot stamping text should not be too small, otherwise it will paste, paste version. The need to print gold is generally designed so that a layer of uniform background color is printed first.
(3) Avoid designing long strips in the printing direction so as to avoid the peripheral blanks being affected by the long edge printing under the action of the ink stringing ink.
(4) Avoid designing large areas of dark shades on the ground, because the thickness of the offset ink layer may not be as thick as screen printing. If you must achieve the dark effect of the design, you may need to print it twice. This will give printing and printing. Post processing brings trouble.
(5) The bar code should not be overprinted during design, and the bar code should be placed in the middle of the layout or close to the mouth when making up, because the left. The upper right corner is susceptible to throwing or wrinkling. This is especially noticeable when printing large cardboard boxes, which can cause ghosting and distortion. Moreover, the bar code line direction should be the same as the printing direction as much as possible because the press deformation of the blanket in the printing mainly occurs in the printing direction. Finally, note that after the box is placed, the bar code should be located on the back or side of the carton.
