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

Nuts are one of the most common snack foods. When it comes to the storage of nuts, shelf life, and freshness are issues of concern to both suppliers and consumers. Most nuts can be stored for several weeks at room temperature without changing their taste after opening, and raw nuts can be stored for