The barcode printed on the packaging bag becomes the printed hardest hit area, which must be dealt with carefully

The barcode printed on the packaging bag becomes the printed "hardest hit area", which must be dealt with carefully

In printing, barcode printing on packaging bags is the hardest hit area for printing companies. It can easily become the crux of the inspection of the outer packaging of the products of food, medicine and other enterprises, and it may also leave customers with the impression that the quality is not good. The following is a brief description of the method and precautions for printing barcodes.

　　 Barcode printing method

　　 1. The use of printing equipment for batch printing and copying is a commercial bar code label production. In this way, bar codes and patterns are generally imposition printed together.

　　2. Controlled by a computer, it can print barcode labels and barcode files in a timely manner.

　　The former is suitable for barcodes with large quantities, fixed specifications, and the same content. It is designed and printed simultaneously with the graphics and text of the outer packaging. The latter can be controlled by a computer to realize real-time printing as required, with strong flexibility.

　　The technical and material requirements of the printing process when printing barcodes for packaging bags

　　1. Size scaling: The size scaling is determined by the size of the packaging bag, and the barcode is usually printed directly from the original size.

　　2. Color matching: black ink is a safe bar code color, and white ink is the safest blank color. When choosing other colors, pay attention to the choice according to the red light effect of the color.

　　3. Requirements for the substrate: In terms of optical characteristics, the substrate is required to have good light dispersion characteristics without specular reflection.

　　4. Requirements for materials: Materials with good weather resistance, stable size after stress, good coloring, moderate ink expansion, low permeability, moderate smoothness and smoothness should be selected.

　　5. Requirements for ink: The color shift of the ink should be considered when the ink color is matched. Because bar code printing is solid printing, the reflection density that can be achieved by printing is related to the optical specificity of the ink and the thickness of the ink layer. During the printing process, the reflection density of the printed product increases with the increase of the ink thickness. When the ink thickness reaches a certain value After that, the density reaches saturation, so pay attention to the ink concentration and the thickness of the ink layer.