Function of plastic food packaging bags

　　1. Physical Action

　　Food in storage and food packaging bags need to avoid extrusion, impact, vibration, temperature difference and other phenomena.

　　2. Shell protection

　　Shell can keep food away from oxygen, steam, stains, etc. Leak proof is also a necessary factor in packaging design. Some packages include desiccants or deoxidants to extend the shelf life. Vacuum packaging or extraction of air from packaging bags is also a way to extend the shelf life of packaging products. Ensuring food is clean, fresh and safe during the shelf life is a major function of packaging bags.

　　3. Packaging

　　A good way to save volume is to put small objects of the same type in a single package, while powder or granular products need to be sealed properly.

　　4. Communicate information

　　The text information and labels on the package tell the user how to use, transport, recycle or dispose of it.

　　5. Marketing

　　Marketing often encourages prospective buyers to buy goods by using packaging, bag stickers, etc. Packaging design has been a pivotal and changing phenomenon for decades. Marketing communication and cover design are applied to highlight sales of some outsourced products.

　　6. Safety factors

　　Packaging plays an important role in reducing transport risks. The tips of packaging graphic information can also avoid the embarrassment of misclassification of goods. Food packaging can also reduce the likelihood of food being eaten directly; Some food packages are strong and have anti-forgery labels to protect businesses from losses. There are also laser marks on the packaging, especially the labels such as color, SMS certification, etc. In addition, retailers often have electronic surveillance labels on their food bags to prevent theft, waiting for consumers to get clearing exports to magnetize.

　　7. Convenience features

　　Packaging may be convenient to add, unload, stack, display, sell, open, reload, use and reuse.

　　8. Partial control

　　The use of packaging bags helps to control overall accuracy. For example, if salt is packed in a bag, you know the inventory and can easily calculate recent sales.

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Summary of knowledge on the use of plastic packaging bags