Plastic packaging industry is a new industry. With the development of science and technology, especially the continuous emergence of new materials, the plastic packaging industry is developing rapidly. With each passing day, various types of plastic packaging seem to have come to everyone just overnight. Beside him, become an indispensable and important material for people's production and life. In particular, as Chinaâ€™s reform and opening up continues to deepen and peopleâ€™s living standards continue to improve, peopleâ€™s demands for milk and various types of foods continue to increase. Not only do they require no fundamental change in their shelf life, but they also require pure taste and aroma. . With the continuous development of China's dairy industry, a large number of well-known brands continue to emerge, replacing some of the local brands, so their sales radius continues to expand, and the corresponding barrier properties for packaging materials also put forward higher requirements.
Barrier packaging materials can effectively prevent gas penetration due to their molecular structure characteristics. Using it as a barrier layer in combination with other materials, the overall performance is good, especially the oxygen permeability is very low. Application to food packaging and the like can greatly extend the shelf life of the product storage. According to incomplete statistics, in developed countries, the use of high barrier materials can account for 47.6% of all its flexible packaging materials, and this proportion is still increasing at a rate of 5% per year; in developing countries, the use of high barrier materials It only accounts for 5% of all its flexible packaging materials. The gap between the two groups of data is so large. The reasons are as follows: First, most developing countries do not have the production technology and capability of high-barrier packaging materials. They rely almost entirely on import from developed countries and are very expensive. Second, the imported high-barrier packaging materials mentioned above, in addition to their high import prices, should be used to produce excellent high-barrier packaging products. They must also be matched with special production equipment. The price of such equipment is even higher. Extremely high; Third, the above two reasons lead to high costs for investing in the production of high barrier packaging products using imported high-barrier materials. Therefore, such plants are rare in most developing countries. In addition, due to the high cost of its products, the market price of the products is high, and end users tend to accept it very difficult. This has created a situation where high barrier packaging products are difficult to popularize in developing countries. On the one hand, more and more packages need to be packed with high barriers, and on the other hand, high barrier packaging products are difficult to popularize, and this contradiction needs to be solved. The successful development of the nano-inorganic modified polyvinyl alcohol coating solution is precisely in line with this trend. The nano-material modified polyvinyl alcohol coating solution leads its domestic and foreign similar products with its excellent technical indicators. Its barrier properties are leading in the world, and its cost performance is inferior to other high barrier materials at home and abroad. Its birth has found a way out for the majority of developing countries to resolve these contradictions. Its outstanding performance is highlighted by its excellent barrier properties and its barrier properties that are not affected by humidity, high transparency, low usage, high utilization of existing equipment, excellent price-performance ratio, and non-toxicity. , no pollution, degradation, is an ideal environment-friendly high barrier packaging material.
Source of information: pack.cn
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