In the case of corrugated printing, there is no special printing method, and embossing, gravure and offset printing are the main printing methods.
In the embossing process of the beer box, before the corrugated paper is processed in the corrugated shape, it is first sent to the flexo printing machine for printing, and then bonded to the corrugated core and another backing paper to form a corrugated packaging material. Corrugated paper is made of a resin material, whether it is a rotary printing or a single printing. Flexographic printing using water-based inks is a very effective printing method, regardless of the smoothness of the liner used to produce corrugated paper, which can be printed accurately and at high speed. In addition, the flexo ink has good opacity and can be printed in brilliant colors on the kraft base paper used for the production of cross-cut paper.
In the plate making process of the resin relief used in the past, the cleaning process using an organic solvent is indispensable, and then some media considering environmental compatibility, such as a plate which can be used only by washing, is used from the plate making process; A plate that can be used for development; a plate that uses a liquid photographic material for UV curing (recycling of unsensed liquid), etc., is a printing method that incorporates environmental compatibility. However, in Japan, the high-speed line technology of flexo printing has not made much progress, and the flexo printing products seen by the stores are mostly 80 network products. In Europe and the United States, especially in Europe, the printing method of corrugated paper is based on flexo printing, and the flexo printing products of 100~140 network cable can be seen. The reason for the high-fidelity line of flexo printing can be said to be strongly adopted by the environmental coordination process in Europe. Japan has high requirements for the reproduction accuracy of printing. The exquisite printing is realized by offset printing and gravure printing. It is a so-called grainless photo. Reproduce the result of the (175Lpi) consciousness that works strongly.
Although it is the same as the "gravure gravure" in the gravure printing method, the paper gravure printing machine is different from the soft packaging gravure printing machine, and it is necessary to transfer the ink by applying a large printing pressure. Therefore, the plate cylinder and the impression cylinder are large. Heavy, it is a printing method for large-volume products. Since gravure is a printing method different from flexo printing, the printing paper must have good smoothness. The gravure printing with a large amount of ink coating is thick, and compared with offset printing and flexo printing, it is a printing method which is highly evaluated in deep printing. In order to correspond to environmental measures that limit VOC emissions, it may be considered to correspond to water-based gravure in the future.
The so-called lithographic printing is offset printing. When it comes to corrugated offset printing, the past process is generally to first perform offset printing on a cardboard, etc., and then attach it to a single-faced corrugated paper. In 2000, due to the widespread use of G-type corrugated, very thin G-type corrugated paper can be printed directly on the offset press. This direct offset printing process can reduce the number of processes compared to the process of printing on cardboard and then bonding to a single-faced corrugated, thus theoretically having advantages in terms of delivery and cost, but the greater advantage is the G-shaped corrugated Offset printing can be performed directly, which can greatly reduce the amount of paper used. The reduction in energy consumption during production becomes a reduction in costs and a reduction in CO2 emissions; a reduction in transportation energy consumption is associated with a reduction in transportation costs and a reduction in CO2 emissions. For example, digital cameras and other products use air transportation occasions. If it is shipped to New York and the packaging is reduced by 10g, the air transportation phase can reduce CO2 emissions by 152.9g. The G-shaped ultra-thin micro corrugated packaging has high strength, thin thickness, small volume and beautiful printing. As a packaging that corresponds to the environment, it will be more noticeable in the future.
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