The development trend of the hottest food packagin

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The development of food packaging materials tends to be diversified

commonly used packaging materials

paper, plastic, metal and glass are commonly used packaging materials in the food industry. Since paper packaging can be recycled after use, a small amount of waste can be naturally decomposed in the natural environment, without adverse impact on the natural environment. Therefore, it is recognized that paper, cardboard and products are green products in the world, which meet the requirements of environmental protection, and can play a positive role in replacing the white pollution caused by plastics

plastic packaging materials have the shortest service life among plastic products, generally 1 ~ 3 months, up to one year. Since then, most of them have become municipal solid waste into the waste treatment system, and some have been discarded at will, becoming "white pollution". Plastic packaging materials account for the largest proportion of waste, and their pollution to the environment is also the most serious among all kinds of packaging materials. The current treatment scheme is to combine recycling with the development and application of degradable plastics

due to the easy recycling of metal packaging materials, it is difficult to reach the accuracy of the general experimental machine and easy to handle. Among its wastes, the imported experimental machine accounts for one part, and the pollution to the environment is relatively small compared with plastic and paper. The commonly used metal packaging materials are tinplate and aluminum, which are widely used to manufacture food and beverage packaging cans. Milk, soft carbonated beverages, wine and jam are generally packaged in glass containers. The main characteristics of glass packaging materials are beauty, sanitation, corrosion resistance, low cost, inert materials and little environmental pollution

innovation of plastic packaging

plastic packaging is mainly to improve the design and provide more convenience; Improve the structure of composite materials to meet the structure of composite materials and more stringent requirements; New paper packaging products focus on functional improvement. For example, the United States and Japan have developed ethylene and carbon dioxide gas for fruits and vegetables, and developed some products such as heat preservation paper and anti-corrosion paper. In the future, multi-layer composite impermeable plastics, functional plastics and biodegradable plastics will develop rapidly. For example, the United States further polymerized lactic acid into biodegradable plastics: on March 1, the spot market of steel raw materials was steadily rising. Italy used corn starch to produce biodegradable plastics. At present, the United States, France, Italy and other countries have monopolized the international market of billions of dollars. Biodegradable plastics in China are also developing rapidly, such as food containers, pulp, plant fiber and other packaging materials made of starch such as potato and corn, as well as "light biological controllable double degradation" plastics. 10. Report selection: different report formats can be selected according to user needs, but the market share is not high, so the prospect is broad

with the development and progress of science and technology, great changes have taken place in food packaging materials and containers. The research and development of various new materials and new material processing technologies, especially the continuous emergence of new polymer materials, have provided a broad world for food packaging

the trend of high-pressure food packaging

recently launched high-pressure food packaging, which is characterized by the fact that the vitamins, flavors and pigments in food will not change due to pressure, so as to maintain the natural flavor of food without damaging the nutritional components. From jam, fruit juice and vegetable juice to meat, fish, eggs and soybean protein, high pressure can be used for treatment. For example, the mixture of protein and broken meat can be made into soft and elastic meat products through high-pressure treatment. High pressure treatment can also tenderize beef. The quality of aged rice stored for one year can also be improved by high-pressure treatment. The cooked rice tastes as fragrant as the new rice. Packaged food after high-pressure treatment is very popular in Japan. Now there are 15 kinds of jam (strawberry jam, kiwi jam, apple jam), 6 kinds of dessert, 3 kinds of fruit sauce and 3 kinds of fruit seasonings. These foods are processed at 400-500mpa and packed with high-quality packaging materials. The packaging design is reasonable, the printing is beautiful, and the product color and flavor are better than the original similar products. Although the price is higher, they are still deeply welcomed and favored by consumers

pursuit of nano packaging technology

nano particles are added to packaging materials (such as plastics and composite materials), which can remove odor and sterilize. Now some of our enterprises are using this technical feature to add nano particles to the food in the refrigerator, greatly extending the shelf life. In the same way, nano particles can also be added to paper, plastic and composite materials for packaging food, which can improve the shelf life of packaged food

when studying the fresh-keeping packaging of fresh fruits and vegetables, it is found that in the fresh-keeping packaging, fruits and vegetables release ethylene. When ethylene reaches a certain concentration, fruits and vegetables will accelerate their decay. Therefore, ethylene absorbent should be added to the fresh-keeping packaging to reduce the ethylene content in the packaging, improve the fresh-keeping effect and prolong the shelf life. It can accelerate the oxidation of ethylene released from fruits and vegetables, so as to achieve a good fresh-keeping effect. Nanoparticles used as oxidation catalysts mainly include Fe3O4, Fe2O3, Co3O4, NiO, Pt, Rh, Ag, PD, etc


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