The new process of gravure preprinted carton compared to offset printing has the following advantages:
1. High production efficiency: the speed of gravure web printing is 120 meters per minute, and the speed of cardboard production line corrugated paperboard is 180 meters per minute, which is shorter than the conventional flat sheet paper offset and veneer tamping process and is less labor-intensive. Low cost and high efficiency.
2, ink color printing: the use of ink in the surface smoothness of the higher white paper board printing, gravure can get a higher quality printing quality; if you use oily ink, gravure printing effect can be comparable with offset printing. This is because the gravure ink layer is thick, and the printing, drying, and glazing connections are completed, the color is bright and firm, the color difference is very small, and the offset printing machine has no drying and polishing function.
3, large-format multi-color printing: Ultra-wide open offset press printing format but also 1.10 × 1.46 meters, up to only 4 color groups. The domestic paper concave machine can be printed on a 1.70 × 1.70 m carton layout, printing 5 to 12 colors. Gravure printing machine gold ink, silver ink has a stronger metal feel effect.
4, suitable for large-volume long-lived: steel pre-printed roller print force up to 4 million impressions, reduce the time for version, the production cost of a large number of single job is lower than offset and flexo.
5, low weight, high strength effect: pre-printed webs in the corrugated line made of cardboard, the use of starch glue on each layer of heat bonding, flat hot plate light pressure forming, than traditional cold glue veneer and steel roller The strength of corrugated cartons made from rolled cardboard is 10% higher, while the reduction in the total weight of cartons as a whole will reduce costs by 20%. At the same time, the phenomenon of ribs and warping that occur when the corrugated cardboard with low basis weight is rolled on the laminator is avoided.
The structure of the paper concave machine gravure printing machine is composed of three parts: machining parts, electrical transmission parts and electronic control parts. The gravure printing machine has the following features: printing accuracy, registration, pressure, tension, speed, ink supply, and moving material. The structure of the printing machine is closely related. Assembly of domestic paper concave machines includes:
1) Wallboard, a sturdy and constant wallboard structure guarantees that the roller can maintain lateral stability even when it is running at high speed for a long time;
2) Roller, Roller with high friction resistance and dynamic balance, and high transverse accuracy during paper feeding are important components that affect the tension and vertical and horizontal alignment of the paper roll;
3) The accuracy of the box and gear box processing directly affects the tension, and the processing accuracy of the gear transmission determines the stability of the printing process;
4) to ink and scraper device, the use of electronic inkjet to effectively prevent the loss of dots caused by lack of ink; two-axis pneumatic pressure three-position adjustment blade, automatically adjust the pressure (10-150kg), in order to ensure the cleanliness;
5) The exhaust system, the use of circulating hot air and layout blowing device, is conducive to clean air, printing, quick-drying and neat edges of the mesh. (To be continued)
1. High production efficiency: the speed of gravure web printing is 120 meters per minute, and the speed of cardboard production line corrugated paperboard is 180 meters per minute, which is shorter than the conventional flat sheet paper offset and veneer tamping process and is less labor-intensive. Low cost and high efficiency.
2, ink color printing: the use of ink in the surface smoothness of the higher white paper board printing, gravure can get a higher quality printing quality; if you use oily ink, gravure printing effect can be comparable with offset printing. This is because the gravure ink layer is thick, and the printing, drying, and glazing connections are completed, the color is bright and firm, the color difference is very small, and the offset printing machine has no drying and polishing function.
3, large-format multi-color printing: Ultra-wide open offset press printing format but also 1.10 × 1.46 meters, up to only 4 color groups. The domestic paper concave machine can be printed on a 1.70 × 1.70 m carton layout, printing 5 to 12 colors. Gravure printing machine gold ink, silver ink has a stronger metal feel effect.
4, suitable for large-volume long-lived: steel pre-printed roller print force up to 4 million impressions, reduce the time for version, the production cost of a large number of single job is lower than offset and flexo.
5, low weight, high strength effect: pre-printed webs in the corrugated line made of cardboard, the use of starch glue on each layer of heat bonding, flat hot plate light pressure forming, than traditional cold glue veneer and steel roller The strength of corrugated cartons made from rolled cardboard is 10% higher, while the reduction in the total weight of cartons as a whole will reduce costs by 20%. At the same time, the phenomenon of ribs and warping that occur when the corrugated cardboard with low basis weight is rolled on the laminator is avoided.
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The structure of the paper concave machine gravure printing machine is composed of three parts: machining parts, electrical transmission parts and electronic control parts. The gravure printing machine has the following features: printing accuracy, registration, pressure, tension, speed, ink supply, and moving material. The structure of the printing machine is closely related. Assembly of domestic paper concave machines includes:
1) Wallboard, a sturdy and constant wallboard structure guarantees that the roller can maintain lateral stability even when it is running at high speed for a long time;
2) Roller, Roller with high friction resistance and dynamic balance, and high transverse accuracy during paper feeding are important components that affect the tension and vertical and horizontal alignment of the paper roll;
3) The accuracy of the box and gear box processing directly affects the tension, and the processing accuracy of the gear transmission determines the stability of the printing process;
4) to ink and scraper device, the use of electronic inkjet to effectively prevent the loss of dots caused by lack of ink; two-axis pneumatic pressure three-position adjustment blade, automatically adjust the pressure (10-150kg), in order to ensure the cleanliness;
5) The exhaust system, the use of circulating hot air and layout blowing device, is conducive to clean air, printing, quick-drying and neat edges of the mesh. (To be continued)
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