Aluminum foil has very good barrier properties. It blocks odor, blocks air, and has good moisture and moisture resistance properties. Because tea cannot contact with water and air, once it comes in contact with it, it will become damp and deteriorate. Therefore, tea generally chooses aluminum foil packaging.
Tea must be waterproof, moisture-proof and oxidation-resistant during storage
This is determined by the characteristics of the tea. Once the tea is wet or oxidized, it will directly become stale tea. Whether it is the aroma of the tea itself or the taste after soaking, it will be greatly reduced. The aluminum foil packaging material has very good sealing and oxidation resistance, and it is difficult to maintain the aroma of tea leaves, making it difficult for tea leaves to oxidize. At the same time, it has a good effect of preventing moisture, mildew, and anti-counterfeiting, and it has the purpose of extending the storage period of articles.
Tea must be protected from light during preservation
This is mainly because tea contains optically active substances, and photochemical reactions will occur when exposed to light for a long time, which will then fade and deteriorate. Therefore, tea must be stored away from light, especially green tea, so as to reduce its aging rate. The main advantage of aluminum foil packaging material is that it has good light shielding performance.