Potato chips are a popular snack, and the sealing method of potato chip bags is crucial to maintaining the freshness and taste of potato chips. Correct sealing can effectively prevent potato chips from getting damp and softening, and maintain their crisp taste. However, there are many types of potat

Have you ever carefully observed the packaging bag of coffee beans? The structure of the coffee packaging bag is very special. Have you noticed that there are several "small holes" in the back of the coffee bag?On the back of the coffee packaging bag, we often see a round raised air valve with a cir

Flexible packaging is the main force of the food packaging industry. Compared with traditional packaging, a single material does not need to be stripped of different plastics during recycling, which greatly reduces the complexity of the process and facilitates recycling. At the same time, necessary