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What is the effect of the thickness of the aluminum coating on the performance of the aseptic filling aluminum composite double bag?

The effect of the thickness of the aluminum coating on the performance of the aseptic filling aluminum composite double bag is mainly reflected in the following aspects:
Barrier performance: The thickness of the aluminum coating directly affects the barrier performance of the aluminum composite double bag. According to reference articles 1 and 2, the barrier property of the aluminum film is mainly related to the performance of the vapor-deposited aluminum layer, including the thickness of the coating. A thicker aluminum coating can provide a stronger barrier effect, effectively isolating the external oxygen, water vapor and light, and ensuring the freshness and quality of the items inside the package. This is especially important for sensitive products such as aseptically filled food, medicine and cosmetics.
Moisture-proof performance: The thickness of the aluminum coating also affects the moisture-proof performance of the aluminum composite double bag. Due to the presence of the aluminum film, the composite double bag has good waterproof performance and can effectively block the penetration of moisture. A thicker aluminum coating usually provides better moisture-proof effect to prevent the product from deteriorating due to moisture penetration.
Processing performance: The thickness of the aluminum coating also affects the processing performance of the product. According to reference article 4, the thinner the film layer, the better the processability, and the closer the bond between the thick film and the substrate. However, a too thin aluminum layer may affect its barrier properties and protective effects. Therefore, when selecting the thickness of the aluminum layer, it is necessary to comprehensively consider the processability, barrier properties and protection requirements of the product.
Cost considerations: Although thicker aluminum layers can provide better performance, they will also increase production costs. The cost of aluminum foil is high, and the cost of the aluminum plating process will also increase with the increase of the coating thickness. Therefore, when selecting the thickness of the aluminum layer, cost factors must also be considered.

What is the long-term storage performance of aseptic filling aluminum composite double bags?

Material properties:
Aluminum composite bags usually have a multi-layer structure, including aluminum film and other material layers. This structure gives it excellent barrier properties, which can effectively isolate oxygen, ultraviolet rays, and prevent heat transfer.
Aluminum bags also have moisture-proof and anti-oxidation functions, which can effectively isolate external factors such as moisture and dust, and help maintain the stability and safety of the items in the bag.
Preservation effect:
Because aluminum can block external gases, moisture and other substances, aluminized bags usually have good sealing performance, which can greatly extend the shelf life of products and ensure the quality and taste of products.
Specific applications:
Aluminized composite bags are widely used in food, beverages, jams and other industries, which have high requirements for the preservation and long-term storage performance of packaging. The shelf life of multi-layer composite aluminized bags is generally 6 months, but the actual long-term storage performance may vary depending on the specific product and storage conditions.
Storage conditions:
Although aluminized composite bags themselves have excellent performance, they still need to be stored for a long time to avoid adverse factors such as high temperature, humidity, and direct sunlight to ensure the quality and safety of the items in the bag.