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Food packaging
Food packaging is an integral part of food products. One of the major projects in the food industry process. It protects the food, prevents the damage of biological, chemical and physical external factors during the circulation of the food from the factory to the consumer. It can also have the function of maintaining the stable quality of the food itself, which is convenient for food consumption. It is also the image that first expresses the appearance of food and attracts consumption, and has a value other than material cost. Therefore, food packaging processes are also an integral part of food manufacturing systems engineering. But the versatility of the food packaging process makes it a relatively independent self-system.
Food packaging can be divided into metal, glass, paper, plastic, composite materials, etc. according to packaging materials. It can be divided into cans, bottles, bags, bags, rolls, boxes, boxes, etc. according to the packaging type, which can be divided into cans according to the packaging method. , bottled, encapsulated, bagged, wrapped and poured, integrated, sealed, labeling, coding, etc.; can be divided into inner packaging, secondary packaging, tertiary packaging, outer packaging, etc. according to the product level.
Due to more attention to food safety and higher requirements, some countries have strengthened the regulation of food packaging. The implementation of nutritional standards and regulations, indirect additive regulations, etc. to promote degradable packaging, electronic scanning barcodes, etc., are promoting the new development of food packaging.
There are many ways to classify food packaging. According to the technical method, it is divided into moisture-proof packaging, waterproof packaging, mildew-proof packaging, fresh-keeping packaging, quick-freezing packaging, breathable packaging, microwave sterilization packaging, aseptic packaging, pneumatic packaging, vacuum packaging, deoxidizing packaging, blister packaging, and body packaging. Stretch packaging, retort pouch packaging, etc. The above various packages are made of different composite materials, and the packaging characteristics are corresponding to different food requirements, and can effectively protect food quality.