Third, the new printing system box
1, plastic gravure composite carton process
When using a single-faced corrugated production line, if the glossy paper is still needed to be coated after finishing the printing of the facing paper, and the production volume is large, it may not be printed on the surface paper, but the gravure printing is performed on the plastic film by gravure printing. Apply on a white background, then compound the plastic film with a good factor and the tissue paper first, then follow the conventional carton forming process.
The characteristics of this process are:
(1) The cost of carton production is low. When the production volume is large, such a process can greatly reduce the printing cost of the tissue paper and the material cost of the tissue paper. Because the noodle paper does not need to be printed, non-coated white paper can be used, so that the cost of the noodle paper is greatly reduced.
(2) beautifully printed. Because of the use of plastic gravure, the printing effect can be comparable to offset printing.
It is necessary to pay special attention to the fact that in the process of plate making, it is necessary to fully consider the dimensional change and deformation of the plastic film. Otherwise, the carton face paper will be misaligned with the lower cardboard.
2, Coated paper gravure printing composite carton process
When the production volume is relatively large, no coating is required, and the printing effect is good and the cost is low, the process can be used.
The process is to use a paper gravure printing machine to print thinner coated paper, and then composite this fine-printed coated paper with ordinary slagboard or linerboard. The whole is used as cartoned paper, and then it is used for facing and normal carton forming. Processing.
The characteristics of this process are:
(1) The cost of carton production is low. The main reason for the reduction in cost is to convert whiteboard paper to low-weight coated paper in combination with cheap linerboard, which reduces material costs.
(2) beautifully printed. Paper gravure printing is very beautiful.
(3) Gravure printing plates are more complicated and costly, and are not suitable for printing carton products that are often revised.
(4) The operation and control methods of the printing process, such as the face-to-face paper compounding and the box making, should be carefully explored, accumulated, and reasonably implemented, otherwise it is very easy to cause an increase in the reject rate.
3, direct offset printing corrugated box process
The direct offset printing process of corrugated cartons is now relatively mature abroad. It is the printing of corrugated board directly onto a special offset press. Suitable for processing thin corrugated boxes.
The process can not only guarantee the good moldability of the carton, but also can complete the exquisite glossy paper printing. However, the printing machine used is relatively expensive. At present, it is not yet in line with China's demand standards, and it is not suitable for the carton industry in the near future. Adopted, but in the next few years, this process may become the new development direction of high-grade carton printing in China.
4. Pre-printed and gravure preprinted corrugated box process
This year's development is relatively fast, both of these processes are first to use web printing paper, and then complete the production of corrugated cardboard in the automatic corrugated board production line. Carton printing quality and molding quality are relatively high, but the investment is relatively large and it is not suitable for small batch production.
In suffocating the industry in the country, the three kinds of conventional printing techniques should be used within the general public and become the mainstream method of corrugated paper box. The new type of printing box method, due to the hot spots of equipment, materials, processes, operations and other technology has not yet been fully grasped, the investment is relatively large, the promotion of the difficulty is still relatively large. However, in order to improve the quality of cartons, reduce the total cost of the cartons, obtain maximum profits, and increase the competitive advantage in the market, it is imperative to adopt a new type of box-making technology.
From the general development of the carton printing process, the plate-making and printing technology of the flexographic plate printing corrugated box process needs to be improved as a whole. The plastic gravure printing, the carton gravure printing and the web offset printing process need to be promoted and improved. Direct offset printing and preprinting Corrugated box production process should also arouse our concern.