Is the safety of food packaging more insecure?

In the supermarket, colorful food packaging strongly appeals to people's desire to buy, and there is an irresistible temptation for children. However, these colorful food packaging will not be harmful to the human body during the printing process. Where does the substance come in and pollute the food? Although careful parents care about their children, they may not think about the safety of food packaging. With the development of human civilization, the environmental protection problem of packaging has increasingly become the focus of attention. The society needs a clean environment, manufacturers need pollution-free packaging, and customers need more hygienic foods.

Packaging for the environment and human body pollution, mainly packaging materials and packaging printing two major aspects. Direct contact with food packaging materials, such as paper, plastics, metals, etc. can not be any source of pollution, this is a prerequisite; but some materials are inevitable, we must rely on packaging and printing, to increase the protective layer on the substrate, so that food is not in direct contact Materials with residual sources of contamination, such as a layer of coating in metal cans, printing or composite layers in plastic films, provide good barriers.

However, this is not the safest packaging printing, because traditional printing inks are inevitably mixed with solvents such as benzene and harmful substances. Although most of them are volatilized during the printing process, there is always a small amount of residual substances. Continue to distribute during packaging and use. Of course, this will not exceed the standard of food hygiene, but people are always at a loss, hoping to absolutely avoid pollution and get a safer environment. The best solution to the problem that has been found is flexographic printing. This printing ink solvent is alcohol, even water, completely non-toxic and completely volatile.

Foreign countries have been groping from the 1950s and now have been able to completely solve various technical and quality issues in the printing process. They have a complete set of experience and have achieved great results. In Western Europe, the proportion of flexographic printing in packaging printing was 4% in the early 1950s, 10% in the early 1970s, and 18% in the early 1990s, now accounting for 28%. This is the fastest and most effective printing process for the entire printing process. In the United States and Canada, the proportion of flexographic printing in packaging and printing is as high as 70%, which shows its development potential and popularity. From a food hygiene point of view, flexographic printing is the most suitable packaging and printing process; it is also the natural choice for pharmaceutical packaging.

In some developed countries, regulations have even been established that must use flexographic printing to produce pharmaceutical packaging. Therefore, we must call on the whole society to care for the development of the cause of the benefit of mankind in flexographic printing. We hope that all food and drug manufacturers will actively promote and use flexographic prints. One of the greatest advantages of flexographic printing is the continuity of subsequent processing. General flexographic printing is web rotation printing, and the processes of die cutting, gluing, and bag making can be continuously completed online, especially for the production of automated packaging machines for food production companies. Of course, gravure printing also has such a function, but the flexographic version is relatively low cost, and it is easier to produce more varieties and small batches.

The introduction and development of flexographic printing in China began in the 1970s. Now we have been able to manufacture our own flexographic printing presses and their substrates, as well as various flexographic printing inks. In particular, the regular production of water-based inks and water-based polishes can be applied to other types of inks to cover the waterborne coating of the same color, obstructing the volatilization of the remaining toxic solvents, and direct contact with foods to ensure food safety and hygiene. In addition, we have accumulated a wealth of experience in the printing process and have been able to print printed products that are not inferior to traditional ones, and have reached international standards in the internationally famous brands such as “Coca Cola” and “Pepsi Cola” and have reached international standards. Close up horizontally.

In China, flexible packaging printing has made great progress in the past 10 years, but its development momentum is not fast and progress is not remarkable. From the point of view of the packaging and printing industry practitioners, we should boldly innovate in terms of machines, materials, and processes, actively explore and take the lead, and only take first-class products to be welcomed by manufacturers and customers. For the operators of the vast number of food companies, they also hope to emancipate the mind and use the new packaging. For example, flexographic prints do have some less than traditional prints. Can they adapt to the improved packaging design? Another example is that the flexographic printing colors are not bright enough, but they are particularly thick and they can completely avoid weaknesses and achieve better visual effects.