Development trend of the hottest food packaging ma

The development trend of food packaging materials market

the food industry is a sunrise industry in the 21st century, and the market competition will largely depend on the competition of packaging quality. Because packaging plays an irreplaceable role in food protection, preventing contamination by external microorganisms or other substances, preventing or reducing food oxidation and other aspects

how will food packaging materials develop in the 21st century if they are damaged? Relevant experts have clearly pointed out the direction, which is to improve the properties of existing plastics, develop new varieties, improve the strength and barrier, reduce the amount (thick wall), reuse, classify and recycle, and protect the environment

new high barrier plastic has been widely used abroad, because this packaging material can not only enhance the protection of food, but also reduce the amount of plastic, and even can be reused. For processed food requiring high barrier protection and therefore high conversion power, as well as vacuum packaging, inflatable packaging, etc., composite packaging is generally used. In multilayer composites, there must be more than one layer of high barrier materials. At present, the commonly used high barrier materials in China include aluminum foil, nylon, polyester, etc. with the improvement of the protective requirements of food, the color difference of ethylene vinyl alcohol copolymer and polyvinyl alcohol with better barrier is a common disadvantage in injection molding. In fact, it is not uncommon for injection molding machines to be scrapped in batches due to the color difference of supporting parts. At present, pen (polyethylene naphthalate) developed and applied in a small amount in developed countries will bring great changes to food packaging. The chemical structure of pen is similar to that of pet (polyethylene terephthalate), but its rigidity is greatly improved, and its oxygen resistance and water resistance are several times higher than that of pet. In addition, pen has good ultraviolet absorption, hydrolysis resistance, low gas adsorption, no residual taste in the loaded food, and can be reused

inorganic high barrier microwave food packaging materials will become a new favorite. At present, the packaging made of aluminum foil and some plastic composites has the disadvantages of being opaque, not easy to recycle, and can not be used for microwave processing. The SiO plated materials developed in recent years can be used as substitutes. SiO is coated with a thin layer of silicon oxide on pet, PA, PP and other substrates. It not only has better barrier property, but also has excellent adaptability to the atmospheric environment. Its barrier is almost unaffected by the changes of ambient temperature and humidity. With high barrier, high microwave permeability and transparency, SiO coating can be used for soft packaging such as high-temperature cooking and microwave processing, and can also be made into beverage and edible oil packaging containers. China has begun a certain scale of research, and a few developed countries have begun to apply it. The cost of SiO coating is high, and the large-scale production technology is not perfect, but because of its special advantages, it will become an important material in this century

the application of active packaging technology will become a trend. Active technology packaging includes the interaction with the smell inside the packaging and food. Active packaging can effectively maintain the nutrition and flavor of food. Due to the progress of material science, biological stretching science and odor packaging, the active packaging technology has developed rapidly in recent years. Such as deoxidizing active packaging, active packaging containing sterilizing agent, etc