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Green packaging of food packaging film has become an inevitable trend
With the continuous development of packaging technology, high-resistance plastic packaging materials that can guarantee quality, keep fresh, preserve flavor and extend shelf life in the food packaging industry, especially composite film (bag) are widely used in cooking food, tea, On meat, flavored snacks, milk and other packaging. In addition to the processing technology and sterilization methods of food itself, how to choose appropriate packaging materials has a very important impact on ensuring food quality and safety.
The food packaging film is used to wrap the surface of the food, mainly to isolate the decomposition of microbial bacteria and foreign pollutants, to prevent and prolong the deterioration of the food material. Food packaging film has stricter requirements on the safety and safety of packaging materials. It is necessary to have corresponding relevant standards and testing procedures. Although some measures have been taken at home and abroad, there are still many deficiencies. Recently, foreign countries have developed a plasma coating technology to deposit inorganic oxide coatings such as SiOx and AlOx on PET, BOPP and other substrates to obtain a high barrier film.
The coated silicon film has relative stability to temperature and is suitable for high temperature cooking and sterilization food packaging. Degradable films, edible films and water-soluble films are all green packaging products developed in recent years in the world. The use of natural macromolecular polymers such as lipids, proteins and sugars as packaging films has also been vigorously developed.
Since the food packaging film has excellent performance for protecting food safety, and its high transparency can effectively beautify the packaging, the position of the food packaging film in the packaging of the product is more and more important. In order to meet the current changing external environment and the needs of different consumers, many domestic and foreign companies have increased their research and development of food packaging films. Food packaging film is developing towards greening and standardization. Green packaging refers to the moderate packaging that is harmless to the ecological environment and human health throughout the life cycle of the product, can be recycled or easily degraded in nature, and conforms to sustainable development. As a part of packaging materials, green packaging has become an inevitable trend.