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Introduction to the classification and use of packaging plastic bags

by:XCBIO     2021-09-07
Packaging plastic bags refer to bags used to pack various items, making the goods easy to transport and store during production and circulation. It is widely used in daily life and industrial production. Packaging plastic bags are classified according to raw materials: high-pressure polyethylene plastic bags, low-pressure polyethylene plastic bags, polypropylene plastic bags, polyvinyl chloride plastic bags, etc. Packaging plastic bags can be divided into vest bags, straight-tube bags, three-dimensional bags, square bottom bags, sealed bags, plastic strip plastic bags, special-shaped bags, etc. according to their appearance.   Food packaging plastic bag is a kind of packaging design. In order to keep food fresh and store food, food packaging plastic bags are produced. Food packaging bags refer to film containers that directly contact food and are used to hold and protect food. It is often used for packaging cakes, candies, fried products, biscuits, milk powder, salt, tea, etc. Food packaging plastic bags can be divided into ordinary food packaging plastic bags, vacuum food packaging plastic bags, inflatable food packaging plastic bags, boiled food packaging plastic bags, steamed food packaging plastic bags, and functional food packaging plastic plastic bags according to their scope of application.  Vacuum packaging refers to removing the air in the packaging plastic bag and sealing it to isolate the food in the packaging plastic bag from the outside world. In the vacuum state, the growth of aerobic microorganisms is slowed down or inhibited, reducing protein degradation and oxidative rancidity of fats. In addition, after vacuum packaging, lactic acid bacteria multiply and the pH drops to 5.6-5.8, which further inhibits the growth of other bacteria and prolongs the shelf life of the product. Vacuum packaging usually needs to be combined with other commonly used preservation methods to obtain a good preservation effect, such as dehydration, adding spices, sterilization, and freezing.   The application of packaging plastic bags in daily life can bring us a lot of convenience. Generally speaking, people use plastic bags to store fruits and vegetables in winter to keep them fresh, but the storage time should not be too long. In winter, fruits or vegetables are usually stored in packaging bags. The important principle is to reduce the oxygen concentration and increase the carbon dioxide concentration, so that the fruits and vegetables are in a dormant state, and the storage period is prolonged. However, the storage time cannot be too long. Second, if you want a better storage environment for fruits or vegetables, you need to open the opening of the packaging plastic bag for two or three days to release carbon dioxide and heat, and then seal it. In this way, fruits and vegetables will be kept longer and will not deteriorate easily. The above explanation is the introduction of the classification and use of plastic packaging bags. I hope it will be helpful to you after reading it. If you want to know more about packaging plastic bags, please contact customer service online or call our company’s services. Hotline (upper right corner of the website) for consultation, we will be happy to provide you with quality service!
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