8021 aluminum foil is an aluminum alloy widely known for its excellent barrier properties and high performance in a variety of specialized applications. It is often used for packaging, especially where moisture, oxygen, and light protection is crucial, such as in food, pharmaceutical, and medical packaging.
Specifications
| Parameter | Description |
|---|---|
| Alloy | 8021 |
| Chemical Composition (%) | Al ≥ 99.0, Fe ≤ 0.6, Si ≤ 0.25, Cu ≤ 0.05, Mn ≤ 0.05, Zn ≤ 0.1, Ti ≤ 0.1, Others ≤ 0.05 |
| Temper | O (Soft), H14, H18 |
| Thickness Range | 6 – 100 μm (commonly 9 / 12 / 15 μm) |
| Width | Customizable |
| Surface Finish | Bright / Matte / Coated |
Description
Features
- Barrier Properties
One of the main advantages of 8021 aluminum foil is its excellent barrier properties against moisture, oxygen, and light. This makes it ideal for applications requiring long-term protection, such as in food packaging and pharmaceutical products.
- Corrosion Resistance
8021 alloy has good resistance to corrosion, making it ideal for applications that are exposed to harsh environmental conditions, including moisture and chemicals.
- Strength
While not as strong as higher-strength alloys like 5052, 8021 offers a good balance between strength and flexibility, making it suitable for lightweight yet durable applications.
- Formability
8021 aluminum foil is highly formable and can be easily shaped into various products, including flexible packaging, insulation, and industrial materials.
- Thermal and Electrical Conductivity
The alloy retains good thermal and electrical conductivity, which is useful for heat exchangers and electronic applications.
- Food-Safe
8021 aluminum foil is often used in food packaging, as it is non-toxic and provides a reliable protective barrier, ensuring food remains fresh and free from contaminants.
- Printable
The surface of 8021 aluminum foil can be printed on, making it suitable for customized packaging, branding, and labeling.
Conmon Applications
- Food Packaging
8021 aluminum foil is commonly used in food packaging, particularly in flexible packaging for items that require long-term preservation, such as snacks, dried foods, and convenience meals.
- Pharmaceutical Packaging
The foil is widely used in blister packaging for pharmaceuticals and supplements, protecting the contents from moisture and contamination.
- Medical Packaging
Often used in packaging medical products that require an airtight seal and protection from light and moisture.
- Industrial Uses
The foil is used in various industrial applications, such as insulation materials and heat exchangers, where its conductivity and durability are required.
