At present, there are many types of tea packaging bags in the market. Plastic bags and aluminum foil bags are the most used among many materials because of their good use characteristics. YLTpacking plastic bags share with you the common packaging bag materials: Generally, the materials suitable for tea packaging are: : 1. PE bags (plastic bags) Polyethylene bags, namely PE bags, are widely used packaging materials. Generally, there are two types of low-density PE bags and high-density PE bags. Low-density PE bags are more moisture-permeable and air-permeable. , and the high-density PE bag is smaller. The advantages of PE bags are that they are economical, cheap, and have good moisture resistance, but their disadvantages are poor light transmission and gas resistance, and cannot be used individually for tea packaging. It is best to use polyethylene bag packaging with a layer of outer packaging that can block light and low air permeability, such as synthetic paper cans, iron cans, etc.: PE bags have high air permeability, and it is difficult to solve the problem of oxygen in the packaging bag, which is not ideal the packaging material. 2. Aluminum foil laminated bag The aluminum foil laminated bag is beautiful and elegant, and its advantages are that it is not light-transmitting, moisture-proof and oxygen-resistant, but the price is more expensive than the PE bag, and there will be extrusion problems when used alone. The aluminum foil layered bag can be vacuumed or filled with nitrogen or deoxidizer. With the packaging carton or synthetic paper can, the tea storage can be completely protected from moisture, gas, light, and oxygen. Low temperature storage is the best solution for tea. Perfect preservation method. 3. Nitrogen filling or vacuum packaging Since the packaging bag will shrink in vacuum packaging, in order to avoid re-squeezing and collision and for the sake of beauty, it is advisable to add outer packaging protection. Nitrogen-filled packaging will expand the bag, and it should not be squeezed to prevent the bag from bursting. Both of them need to be packaged, and both have good preservation effects, but the investment is more expensive. 4. Metal tin cans The advantages of metal tin cans are extrusion resistance and good texture. In the early days, they were mainly used for outer packaging of tea with PE bags. However, due to their high price and easy corrosion, rust and deformation, they have been gradually eliminated. The paint smell and the tightness of the lid in the metal tin can are not suitable for use alone. It is best to use PE bags or aluminum foil laminated bags as inner packaging. 5. Glass jars, magnetic jars, wooden boxes, carton boxes Although glass jars have excellent gas and moisture resistance, they are light-transmitting, fragile, heavy and expensive. Magnetic jars or clay jars can be protected from light but are fragile and heavy like glass jars. If the wooden box is not handled properly, it is easy to cause the tea to absorb odor and absorb moisture and breath. The carton or paper bag is easy to absorb moisture and rupture. These materials are not ideal tea packaging materials. . 6. Synthetic paper cans Synthetic paper cans are the most widely used packaging materials at present. Its advantages are economical, light and beautiful, but the air permeability and moisture permeability are still high, and it is not suitable to be used alone. inner packaging. Although there are thousands of external packaging of tea, the most used plastic packaging products in the inner packaging of tea, because its sealing and moisture-proof effect are only the best. For different tea bags, we have the best solutions, if you want to know more about tea bags,