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2. Color carton produced by gravure preprinting can get high quality ink and ink prints. Due to the high precision of gravure printing, it is not more than 0.2mm. Gravure printing can also be completed once by printing and varnishing. General gravure printed wire after printing Up to 300 lines, gravure printing ink than other printing methods, the highest up to 4.5 ~ 6g/m2, India ink full, soft, bright, solid, and gravure printing after each color has a full drying system, Therefore, under the premise of choosing the paper with higher surface smoothness for printing, gravure printing can obtain high printing quality of ink and ink. Most cigarette packs are made from paper gravure printing. At present, the domestic production of paper gravure printing inks has been relatively mature, domestic has been able to meet the corrugated paper line preprinted with water-based paper gravure ink, can fully meet the corrugated board production line 180 °C high temperature and hot plate friction.
3. Large-format, multi-color printing can be performed. The maximum size of traditional color offset printing is generally up to 1.2m×o.9m (pan) and is mostly four-color printing. The maximum printing material width of the gravure printing machine for carton preprinting is 2.5m (Shaanxi Beiren Printing Machine Co., Ltd.) At present, the company has produced a variety of specifications of preprinting machines, including 1300mm, 1650mm, 1800mm, 2000mm, 2200mm, 2500mm, and runs well. The number of printing colors can reach 4 to 10 color groups, and gold ink and silver can also be produced. Printing inks and other special inks.
4. more suitable for large-scale long-run printing. The preprinted plates are all made of steel chrome-plated electrogravure, and the number of prints resistant to printing is 300 to 4 million prints, which reduces the time for changing plates, and is particularly suitable for printing large-volume long-lived plates.
5. The corrugated box produced has a higher strength. Since preprinted corrugated cartons are produced on the production line, there is a certain amount of heat-forming time during the production, and the final production of corrugated cartons is high in strength and can avoid uneven coating and carton creases when the laminator is produced. , board warping and so on.
1. High production efficiency. The gravure printing web printing speed reaches 150-200 m/min, which is basically matched with many corrugated cardboard production lines in China. Compared with the traditional offset printing veneer lapping method, the labor cost is low and the efficiency is high.