Current situation and development trend of the hot

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Current situation and development trends of water-based inks

when environmental protection requires printers to implement strict environmental goals, a chain reaction has occurred in all links of raw material supply in the entire printing industry. In order to eliminate v0cs released by solvent-based systems, that is, to meet the requirements of EPA (the U.S.Environmental Protection Agency) to reduce or eliminate v0css, printers began to seek new technologies

for ink formulation designers, one possibility is to develop a water-based system that can reduce v0cs. Now ink has been improved, which has had a significant impact on many areas of the printing industry, especially flexographic printing

ink painting will continue to grow. The future development of ink painting depends on the guidance of EPA; It depends on whether the printer's existing incineration, absorption and treatment control equipment turns to water-based printing after depreciation; It depends on the ink manufacturers to further improve the ink performance in order to win more market share

market application of water-based inks

water based inks have had a huge impact on the flexible packaging market. According to NAPIM American industries' 1999 report, water-based flexographic inks account for 37% of the packaging market. Ink has a specific huge market. For example, it has an absolute advantage in narrow label printing process. Other applications include water-based flexographic printing of folded cardboard, grocery bags, commodity storage bags, multi-layer paper bags, corrugated cardboard and envelopes. Just like Mr. Sun Chemical's technical marketing manager Darryl sagraves once pointed out that the application of ink has an absolute advantage in these "accessible markets", and there will be more significant growth

with the rapid growth of film application, there are also opportunities for ink in composite film printing. Nowadays, ink is very suitable for film printing process because of its diversity and good printability. Because ink can protect the structure of composite film, and the performance of water-based composite binder is equal to or even better than the corresponding solvent-based varieties, we can predict that ink will have a real growth in composite packaging and printing. When the incineration equipment invested by the composite packaging printer needs to be updated, the investment in ink printing process equipment will be considered

ink has entered the gravure printing market, although little progress has been made. According to NAPIM data in 1999, water-based gravure printing ink accounted for 5% of the packaging market share, such as making profits in the gravure printing market of traditional gift packaging and folding cartons. However, gravure printing is not really popular in the beverage and cleaning carton markets

ink has successfully developed many applications in flexo printing and rotogravure printing. After ten years of efforts, ink has entered many fields that have been using solvent ink, but there are still some limitations in this replacement process, resulting in poor application performance of ink, such as in non porous substrates and rotogravure printing. Recently, ink has also entered the folding cardboard (box) market, mainly gravure printing and offset printing

it can be predicted that except for some specific markets, ink can be used in almost all fields where solvent ink is used today, and ink has great growth potential

current situation of ink technology

through nearly 10 to 15 years of technological improvement, the ink system has successfully solved most of the original difficulties, such as difficult to use, ink storage, limitations of substrate, corona treatment and surface tension. The new generation of ink has changed its initial disadvantages into advantages, and gradually grew and matured. Its advantages are mainly manifested in:

· ink has the advantages of environment and safety. In many paper products, ink printing can be designed as low VOCs or zero v0cs

· ink has the advantages of stability and low flammability. Ink has better viscosity stability because of the low volatility of water

· the new generation of water-based products are easier to clean than solvent systems, Using soapy water or weak alkaline detergent can complete the whole cleaning of printing machine parts, thus improving the production efficiency

ink manufacturers have overcome most of the difficulties that originally existed in the ink system, and are actively trying to solve the existing difficulties. At present, the difficulties in the application of ink technology are:

· drying time is still the most important problem in the application of ink. Unless the printing machine is equipped with sufficient drying equipment, the printing speed will be affected. Polypeptides form hard segments, which is also the most important factor affecting the speed of the process of ink replacing solvent ink

· due to the solubility of ink in alkaline solution, the application of ink in high magnetic environment is limited

· the application of ink in frozen food packaging still does not have the resistance of solvent ink, although the distance is rapidly shortened

· due to the high surface free energy of water components in ink, it is difficult for ink to be well wetted and printed on many substrates

ink future development type-C connector solves a major shortcoming of traditional USB. The development trend

the application and technical status of ink show that it is the most important topic to win a larger market share and further improve the performance of ink to make it easier to use

ink technology is gradually accepted by the flexographic printing market in the process of improvement. This is mainly due to the fact that many technologies are not pressed. For many years, ink has been catching up with solvent ink system and has advantages in ease of use and simple printing. Nowadays, when the flexographic printing industry is comparing and choosing water ink or solvent ink; Confidence in ink and wash has risen, making more printing work completed by water-based flexographic printing. Recently, in Europe and North America, product innovation is mainly driven by meeting user requirements. The specific requirements for ease of use come from users, which will also be the driving force of new product development. At present, the performance that ink users require to improve is:

· ink system with stable pH value. The ink manufacturing industry must develop ink with stable pH value in the printing process, that is, there is no need to detect and adjust pH value in the printing process.

· re solubility is another important research field. When amine volatilizes, the resin tends to solidify, even on the printing plate. Recently, ink manufacturers have improved the performance of the resin to make it more soluble, which means that the printing system can run longer before cleaning, that is, to increase production

· the application of ink requires continuous improvement in the application performance of polyethylene substrate

· the alkali resistance of ink printing packaging and its application in frozen food packaging. The ink manufacturing industry is expected to improve the surface resistance of ink prints and make more products water-based, especially in oil and grease resistance, as well as better heat and freezing resistance

environmental protection orientation will also be the key to the future profits of ink painting.

whether ink painting can enter another climax in the future market, the ink manufacturing industry regards the government's measures as the ultimate driving force. EPA has always required the final zero emission of v0cs, which means that printers must gradually reduce the release of v0cs, which will eventually promote the application of ink. At this stage, there is pressure from all sides, indicating that environmental issues will be further concerned. In order to achieve more stringent environmental management goals, printers are always looking for new methods of solvent ink printing operation process to meet government regulations. At present, the printing industry focuses on strengthening the treatment of emissions from solvent ink printing. The usual practice is to use an "incinerator" to absorb and incinerate VOCs, and the other more creative is to apply the treatment system of microorganisms or bacteria that feed on v0cs. All these methods rely on the efficient absorption and transmission of VOCs to systems that can neutralize them, either by incineration or by microorganisms

although the environmental protection department has not yet made a detailed development plan, but continues to strengthen guidance and management, we believe that the strong guidance of environmental protection will be of great significance to the final shift to ink painting

finally, the management of the government will be substantially strengthened, which depends on the air cleaning law and the strictness of its implementation, but there is only one goal to strengthen the implementation, that is, zero emission of v0cs

although water-based ink has won significant market share in some packaging fields, whether it can enter other packaging fields in the future competition remains to be worked out. In short, with the joint efforts and cooperation of relevant industries, that is, ink suppliers provide better ink, film supplies more hydrophilic surface, and printing machine manufacturers manufacture better drying equipment for water-based systems, the use of ink will continue to grow and provide a very feasible way for printers to adapt to the process of low VOCs. In this regard, the production restriction policy previously tightened by Sha, director of the printing scientific cooperation service department, was also adjusted in time. R had a corresponding conclusion: in a certain period, lead-based coatings and asbestos were good products, and now we still hope that their substitutes can have their advantages. However, we have decided that due to the environmental safety benefits of new products, if the new products do not have those quality advantages, we should still adopt them, This indicates the future fate of solvent based packaging ink, that is, it is possible to still use solvent in some applications. It will not disappear completely, but it will lose its market

reprinted from; China media information

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