1. Aluminum-plastic flexible packaging, aluminum-paper flexible packaging: due to opacity, it can be considered according to conventional colors.
2. Single-layer polyethylene packaging: Since it is transparent, you can consider using the color of the content as the complementary color for printing. The color of the content can be used as the pattern background or as the embellishment color (window color), as long as it depends on your design style. It depends.
3. The color of liquid items can be used for the background color of flexible packaging, such as milk, soy milk, juice, etc.
4. The color of small solid particles can also be used for the background color of flexible packaging, such as coffee, monosodium glutamate, etc.
5. The color of solid large particles is not good for the background color of flexible packaging. For example, if it has been dried, it is recommended to leave a transparent window on the packaging, or a full-sided opaque printing on one side, and only the explanatory text on the back. Make the contents transparent and visible.
6. The bar code must have a contrasting background color, and the content should not be used as the background, so as not to be read by the reader.
7. There is no hard and fast rule for the text, as long as it is not printed on the food contact surface, the art of the text is the space for design to play.
8. As much as possible, using more colors will look more realistic, but the cost will go up. Generally, four sets of films are produced, that is, four colors. To print realistically, seven sets of film plates are produced, that is, using seven colors. Printing, of course, is based on the premise that production costs can be afforded.
9. The color of the text is not listed separately, and it is attributed to the draft in other patterns.
10. The size of the text: the name of the product can be larger, but it still depends on the size of the packaging bag, and it can also be treated artistically, that is, doing some text deformation and the like.
11. The description text can be smaller, but not less than 2.5mm, otherwise it will not be visible.
12. All the text should have a contrast with the background color so that it can be read clearly.
13. There are no hard-and-fast rules for issues such as whiteness, and they also belong to the category of design creativity.