Product Uses:Food Industry: Widely used in various food packaging, such as meat, snacks, coffee, tea, etc. For example, vacuum - packed meat products in aluminum foil bags can have a relatively long shelf life at room temperature; coffee powder packaged in aluminum foil bags can maintain its fragrance and freshness.Pharmaceutical Industry: Used for the packaging of pharmaceuticals, medical devices, etc. Some drugs that need to be protected from light, such as certain vitamin tablets, eye drops, etc., aluminum foil bags can provide good storage conditions; disposable syringes and other medical devices can be kept sterile in aluminum foil bags.Electronic Industry: Used for packaging precision electronic products such as electronic components and chips to prevent damage from static electricity, moisture, and dust to the products and ensure the performance and reliability of the products.Cosmetics Industry: For some high - activity - ingredient skin care products, such as serums containing easily oxidized ingredients such as vitamin C and retinol, aluminum foil bags can protect their activity and extend the product's shelf life.
Material Composition
Aluminum foil: It is a key component of an aluminum foil bag and is usually made by rolling aluminum with a purity of over 99%. Aluminum foil has excellent barrier properties and can effectively block oxygen, water vapor, light, etc., thus protecting the quality of the products inside the bag. For example, for some oxygen - sensitive foods, aluminum foil can prevent them from oxidizing and spoiling.
Plastic film: It is often laminated with aluminum foil. Commonly used plastic films include polyethylene (PE), polypropylene (PP), etc. PE has good flexibility and low - temperature resistance, making it suitable for packaging items that need to be stored in a low - temperature environment. PP has relatively high heat resistance and strength. These plastic films in the composite structure can enhance the flexibility, toughness, and heat - sealing properties of the bag, facilitating the processing and use of the bag.
CharacteristicsGood barrier property：Oxygen - barrier property: It can greatly reduce the oxygen transmission rate. This is very important for fried foods like potato chips because oxygen can cause the oxidation and rancidity of oil, affecting the taste and shelf life of the food.Moisture - barrier property: It can effectively block the entry and exit of water vapor. For example, for the packaging of desiccants for some electronic products, if water vapor enters, it will affect the effect of the desiccant, while aluminum foil bags can maintain an internal dry environment.Light - blocking property: It has a very good blocking effect on light. For some light - sensitive items such as pharmaceuticals and photographic films, it can prevent chemical reactions caused by light and ensure the stable quality of the products.Good sealing property: After processing techniques such as heat - sealing, aluminum foil bags can form a tight seal to prevent the leakage of contents. At the same time, it can also maintain the vacuum or the state of being filled with protective gas inside the bag, extending the product's shelf life.
Excellent mechanical properties: It has certain strength and flexibility. It can withstand certain pressure, tension, and friction during packaging, transportation, and storage, and is not easily damaged. For example, in an automated packaging production line, aluminum foil bags can smoothly pass through various mechanical operation links.
