In printing, printing barcodes on packaging bags is a major disaster area for printing enterprises. It is easy to become a sticking point in the inspection of external packaging of food, pharmaceutical and other enterprises' products, and may also leave customers with the impression of poor quality. Below is a brief explanation of the method and precautions for printing barcodes.
Printing method of barcode
1. The use of printing equipment for batch printing and copying belongs to commercial barcode label production, which generally involves combining barcodes and patterns for printing.
2. Controlled by a computer, timely printing of barcode labels and barcode files.
The former is suitable for barcodes with a large quantity, fixed specifications, and the same content, designed and printed simultaneously with the packaging graphics and text. The latter can be controlled by a computer to achieve real-time printing according to requirements, with strong flexibility.
Technical and material requirements for the printing process of packaging bags when printing barcodes
1. Scaling of size: The scaling of size is determined by the size of the packaging bag, and barcodes are usually printed directly in their original size.
2. Color matching: Black ink is the safe barcode color, while white ink is the safest blank color. When choosing other colors, it is important to pay attention to the red light effect of the color.
3. Requirements for substrate: In terms of optical characteristics, it is required that the substrate has good optical dispersion characteristics and cannot exhibit mirror reflection.
5. Requirements for ink: When matching ink colors, the color deviation of the ink should be considered. Due to the fact that barcode printing is field printing, the reflection density that can be achieved during 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, the density reaches saturation. Therefore, it is important to pay attention to the concentration of the ink and the thickness of the ink layer.