Printing bag printing barcode into printing precautions
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In printing, the printing of barcodes in packaging bags is the hardest hit by printing companies. It is easy to become the crux of the inspection of the outer packaging of products such as food and medicine, and it may also leave the impression that the quality is not good. The following is a brief description of how to print the barcode and the precautions.
Bar code printing
1, using printing equipment for batch printing and copying, is a commercial bar code label production, this method generally imprints the bar code and the pattern together.
2, controlled by computer, print barcode labels and barcode files in a timely manner.
The former applies to a large number of barcodes with fixed specifications and the same content, and is designed and printed at the same time as the outer packaging graphics. The latter can be controlled by computer to achieve instant printing on demand, with strong flexibility.
Technical and material requirements for the printing process when the package is printed
1, the size of the zoom: the size of the zoom is determined according to the size of the bag, the bar code is usually the original large direct printing.
2, color matching: black ink is a safe bar code color, 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, the requirements of the substrate: in terms of optical properties, the substrate is required to have good light dispersion characteristics, and can not appear specular reflection.
4, the requirements of the material: should be selected for weather resistance, stable size, good colorability, moderate ink expansion, low permeability, smoothness and smoothness of the material.
5, the requirements of the ink: in the ink color matching should consider the color shift of the ink. Since 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 printing product increases as the thickness of the ink increases, when the thickness of the ink reaches a certain value. After that, the density is saturated, so pay attention to the concentration of the ink and the thickness of the ink layer.