Environmental protection dawn of the hottest flexo

2022-08-26
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Flexographic printing: the dawn of environmental protection in the printing industry

in recent years, flexographic printing has made great progress in the global field with its unique advantages. It is unique not only in environmental protection and efficiency, but also in quality

today, all walks of life are calling for environmental protection products and green products. Traditional printing methods, such as gravure printing and offset printing, have shown some "inherent deficiencies" in packaging and printing, or the cost is high, or pollutes the environment, which makes our packaging and printing industry eager for the emergence of a new high-quality environmental protection printing method, which not only ensures cost reduction, efficiency improvement, but also environmental protection

multiple advantages of flexographic printing such as environmental protection:

thick ink layer and consistent ink color

non toxic water-based ink is widely used for printing. Flexographic ink is the only non-toxic ink approved by the American food and Drug Association in all printing methods at present. It has the advantages of controlling air pollution, being beneficial to safety and health, and reducing the risk of fire. In terms of quality, compared with oily ink, its residual solvent is less, so the high gloss part is better

a wide range of suitable printing media

flexographic printing machines can print paper, as well as aluminum foil, plastic film, non drying adhesive film, cellophane, etc. the types of suitable printing media are more than gravure printing

the comprehensive processing capacity of the equipment is strong

almost all narrow width unit type flexographic printing machines can process after printing on the same equipment, such as reverse printing under a certain pressure, temperature, frequency, stroke, oil-free lubrication, glazing, laminating, die cutting, transverse cutting, slitting, punching, dragon beating, fan folding, automatic waste discharge, etc. Therefore, it is not unreasonable for someone to call the flexographic printing machine a printing processing line

low production cost and high economic benefit

compared with gravure printing, a common printing method for flexible packaging, the plate making cycle is shorter and the plate making cost is 30% lower; The ink consumption is 30% less than that of gravure printing; Electricity consumption is saved by 40%; The printing speed is fast, and the maximum printing speed of the satellite wide flexo press can reach 250 meters per minute; The rejection rate is lower than that of gravure printing; Occupy less production site; Moreover, it has strong comprehensive processing ability and can be formed at one time, which saves the labor of the next process; Avoid the waste of turnover between processes; Therefore, the comprehensive production cost is low

flexo printing encounters a "bottleneck"

flexo printing uses the principle of embossing. Compared with gravure printing with thick oil and heavy color, it has less coloring ink, is thinner, and its chromaticity is not very high, which is less bright than gravure printing in brightness. Domestic consumers of flexible packaging have not been able to accept this new environmentally friendly printing technology for a long time because they have been in the mindset of gravure printing with strong coloring and high brightness. Moreover, the development of flexographic printing technology is also limited by its market itself. The environmental friendly ink required depends on imports for a long time, resulting in high costs. This is also the reason why the focus of flexographic printing is the stacking of 5 (1) 00 layers of graphene, which cannot be widely promoted

after the introduction of flexo printing technology, the internal structure and management of the enterprise should be changed and adjusted accordingly. No matter how good the printing plate quality is, if the printing process cannot keep up, it cannot fully reflect the original design intention and meet the user requirements. Common faults of flexo printing include poor inking, dry version, paste version, edge defects, improper pressure, constant deformation of graphics and text due to low dynamic limit, dimensional displacement, etc. To solve these problems, in addition to equipment and material factors, we must also pay attention to the matching of the embossing roller, the pressure between the embossing roller and the printing plate, the pressure between the printing plate and the embossing cylinder, and the relationship between the ink viscosity and the machine speed. Without a set of data and operating procedures, it is difficult to print good products. At present, flexographic printing industry should not only have its own printing experts, but also plate making experts and ink experts

at present, the eye tone original design of Chinese flexographic printing and the production of four-color overprint are still a weak link. We should learn from the experience of other printing methods related to process technology, combined with the characteristics of flexographic printing, and explore a set of theories, methods, quality control and detection means of making flexographic printing, so as to meet the printing needs of high-quality color printing

flexographic printing can start a prairie fire

in the United States, flexographic printing has been fully developed. Both the manufacturing technology of printing machine and the application technology of flexographic printing itself represent the highest level of flexographic printing. According to statistics, most of the commodity packaging seen in the domestic market of the United States is almost flexographic printing products. Flexographic printing has occupied 70% of the market share in the field of flexible packaging printing, 85% in the field of label printing and 98% in the field of corrugated boxes

follow the national conditions and create a new path

although flexographic printing in China has developed rapidly, it is still in the stage of popularization. Therefore, flexographic printing equipment is not the faster, the higher the accuracy and the more color decks, the better. Fierce market competition and the need to make up for the deficiencies of flexographic printing will urge manufacturers to introduce new technologies and materials

at the same time, we should develop more high-precision flexographic printing equipment with multiple functions, coexistence of several printing methods, flexibility and changeability, and suitable for the characteristics of a variety of products. For example: flexible glue wire combination, flexible concave wire combination, flexible wire combination equipment, so as to better determine the machine function and technical requirements according to the product quality needs, the minimum value is the valley value, the maximum limit is to shorten the production cycle, reduce the installation and commissioning time, and pay attention to the economic evaluation of various technical schemes. Therefore, using and manufacturing a multi-function flexographic press is one of the goals pursued by manufacturers and manufacturers recently

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