The barcode printed on the packaging bag is printed into the "hardest hit area", which must be handled carefully
In printing, printing barcodes on packaging bags is the hardest hit area for printing companies. It is very easy to become the crux of the inspection of product packaging of food, medicine and other enterprises, and it may also leave the impression of customers that the quality is not enough. The following is a brief description of the method and precautions for printing bar codes.
Barcode printing method
1. Use printing equipment for batch printing and copying, which belongs to commercial bar code label production. In this way, the bar code and pattern are usually imprinted together.
2. It is controlled by the computer and prints barcode labels and barcode files in a timely manner.
The former is suitable for bar codes with a large number, fixed specifications, and the same content. It is designed and printed at the same time as the outer packaging graphics. The latter can be controlled by the computer, real-time printing as required, with greater flexibility.
The technical and material requirements of the printing process for packaging bags when printing barcodes
1. Size scaling: The size scaling is determined according to the size of the packaging bag, and the barcode is usually printed directly from the original.
2. Color Matching: Black ink is the safe barcode color, and white ink is the safest blank color. When choosing another color, pay attention to the red light effect of the color.
3. Requirements for substrates: In terms of optical characteristics, the substrates are required to have good light dispersion characteristics without specular reflection.
4. Requirements for materials: materials with good weather resistance, stable dimension after loading, good coloring, moderate ink expansion, small permeability, moderate smoothness and smoothness should be selected.
5. Requirements for the ink: the color deviation of the ink should be considered when the color of the ink is matched. Since the barcode printing is solid printing, the reflection density that can be achieved 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 will be saturated, so pay attention to the ink concentration and the thickness of the ink layer.
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