As a food that is extremely sensitive to humidity and oxygen, the moisture-proof and preservation performance of coffee food packaging is directly related to the quality and taste of the product. For practitioners in the food flexible packaging industry, it is crucial to understand and master the moisture-proof and preservation strategies for coffee food packaging.

1.Moisture prevention is the key.So how to keep the moisture prevention?Following is the solutions.

  Coffee has a strong hygroscopic property. Once it absorbs too much moisture, coffee beans or coffee powder are likely to clump and become moldy, affecting the taste and quality. Therefore, moisture prevention is the top priority in coffee food packaging.

  Selecting appropriate packaging materials is the foundation for moisture prevention. Currently, commonly used moisture-proof packaging materials on the market include aluminum foil composite films, aluminized films, etc. Aluminum foil has excellent barrier properties and can effectively prevent the intrusion of moisture. Aluminized films, while ensuring a certain degree of barrier performance, have a relatively lower cost. In addition, some papers with moisture-proof coatings are also beginning to be applied in coffee food packaging. This kind of packaging material is not only environmentally friendly but also can meet certain moisture-proof requirements.

   In addition to the selection of materials, the sealing performance of the packaging is also of vital importance. The use of heat sealing technology can ensure the tightness of the packaging and prevent external moisture from entering. During the heat sealing process, parameters such as temperature, pressure, and time should be strictly controlled to ensure a good heat sealing effect. At the same time, for some coffee products that need to be stored for a long time, nitrogen flushing packaging can be adopted. The air inside the packaging is pumped out and replaced with nitrogen to reduce the content of oxygen and moisture, thereby extending the shelf life of the product.