The difference between preprinting and traditional color cartoning

Preprinting, as the name suggests, is to print the desired pattern in advance before making corrugated cardboard.
The traditional method for producing color corrugated cartons is to use a method of offset printing on a single sheet of carton paper first, and then use a veneer machine to bond the printed noodle sheet with a corrugated cardboard and die-cut into various box shapes.
The method of using pre-printing to produce color corrugated cartons is sufficient: use a large gravure printing machine to print on the web, and after the printing, still receive the web, and then use the printed web as the corrugated paper production line on the cardboard surface. Made of corrugated cardboard boxes, and then cut into boxes with a die cutter.
Gravure Printing Face Paper (web)—Line production Corrugated Cardboard—Computerized slitting—Computerized cross-cutting—Die cutting. Preprinted production is highly efficient because the preprinted printing method uses web gravure printing. Machine printing, printing speed up to 150 meters per minute, imported printing press up to 300 meters / minute. After printing, the upper corrugated paper production line is made of corrugated cardboard, which is much faster than the traditional veneer machine.
2. Pre-printed color carton can get high-quality ink and ink printing The overprint accuracy of gravure printing can reach 0.2 mm. Gravure printing can also be printed and varnished once. The number of printed screens after common gravure printing can be Up to 200 lines; The gravure printing ink is larger than other printing methods, up to 4.5g/m2, the ink is more saturated ink; gravure printing after each color has been fully dried, the print color is more vivid and more solid Therefore, under the premise of using a paper with a higher surface smoothness, gravure printing can obtain a high quality of ink printing. Most cigarette packages are gravure products. At present, domestically produced water-based gravure paper inks are relatively mature and can withstand the requirements of 180-degree high temperature and hot plate friction on the corrugated paper production line.
3, pre-printed production can get large-format multi-color color printing traditional color offset printing the largest printing format is generally 1.2 × O. 9 meters, usually only up to 4 color printing. The domestic gravure printing machine can reach 1.7x1.7 meters of printing format at present, can make the printing machine of 5- 12 colors very conveniently. Abroad gravure printing machine width up to 3.4 meters. The gravure printing machine can also print special inks such as gold ink and silver ink.
4, pre-printed production is more suitable for large-volume long-lived due to gravure printing plate-making costs are higher, under normal circumstances high-level version of the fee is 0.7 yuan / cm2, ordinary level version and line version of the fee is 0 .35 yuan/cm2. Gravure printing plate printing capacity of 300 - 4 million printing, high-grade gravure printing machine only in the first color when the waste generated. Therefore, the greater the print volume, the lower the preprinting production cost.
5. Preprinted corrugated cartons have higher strength because preprinted corrugated cartons are produced on the production line. When the corrugated cardboard is manufactured, it has a certain heating time, so it is more convenient than the traditional method using a veneer machine. The corrugated box has a higher strength and can avoid the occurrence of uneven glue, carton “buckle”, box board warping and the like when the carton is produced by the noodle machine.