The traditional method for producing color corrugated cardboard boxes is: First, offset printing is performed on the single-piece carton facial paper, and then the printed facial paper is laminated with the corrugated paper using a laminating machine, and then die-cut into various box shapes.
The method of using pre-printing to produce color corrugated cardboard boxes is to use a large-scale gravure printing machine to print on the roll paper. After printing, the paper is still collected into the roll paper, and then the printed roll paper is used as the carton face paper on the corrugated paper production line. It is made into corrugated carton board, and then cut into a box shape with a die-cutting machine.
Gravure printing surface paper (roll paper)-production line of corrugated board-computer slitting-computer crosscutting-die cutting
1. High efficiency of preprint production
Because the pre-printing printing method uses a web gravure printing machine, the printing speed can reach 150 meters per minute, and the imported printing machine can reach 300 meters / minute. After printing, the corrugated board is produced on the corrugated paper production line, which is much faster than the traditional laminating machine.
2. Pre-printed color carton can get high-quality ink-print
The overprinting accuracy of gravure printing can reach 0.2 mm, and gravure printing can also be printed and varnished at one time; the number of printed screen lines after ordinary gravure printing can reach 200 lines; the amount of ink inked is larger than other printing methods, the highest Up to 4.5g / ?, the ink color of the printed product is more saturated; the gravure printing has sufficient drying after each color printing, the printed product color is brighter and stronger; so under the premise of using paper with a higher surface smoothness, gravure printing can Get a high quality ink printing quality. Cigarette cases are mostly gravure printed products. At present, domestically produced water-based gravure paper inks are relatively mature and can withstand the requirements of 180 degrees high temperature and hot plate friction on the corrugated paper production line.
3. Pre-print production can get large-format multi-color printing
The maximum printing format of traditional color offset printing is generally 1.2 × 0.9 meters, usually only 4 colors at most. The gravure printing machine can currently reach a printing format of 1.7x1.7 meters, which can be easily made into a 5-12 color printing machine. The widest gravure printing machine abroad can reach 3.4 meters. The gravure printing machine can also print gold ink, silver ink and other special inks.
4. Pre-printing production is more suitable for large batches of long-form jobs
Due to the high plate-making fee for gravure printing, the fee for the advanced gradation version is generally 0.7 yuan / c ?, and the fee for the ordinary gradation and line version is 0.35 yuan / c ?. The durability of the gravure printing plate is 3 to 4 million. The high-grade gravure printing machine only produces waste products during the first color registration. Therefore, the larger the printing volume, the lower the pre-printing production cost.
5. The pre-printed corrugated cardboard box has higher strength
Because the pre-printing of corrugated cardboard boxes is completed on the production line, there is a certain heating molding time when making corrugated cardboard, so the strength of the corrugated cardboard boxes is higher than that of the traditional method of using laminating machines, and the production of laminating machines can be avoided Uneven glue spreading in the carton, "ribbing" of the carton, warping of the carton board, etc.
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