- sales@alummc.com
- Xin'an Industrial Assemble Region,Luoyang,Henan Province,China
8021 aluminum foil is a high-performance aluminum foil made from aluminum alloy 8021. It has excellent corrosion resistance, good ductility, and high tensile strength, making it widely used in pharmaceutical packaging, food packaging, industrial foils, and battery soft packs. The outstanding feature of 8021 aluminum foil is its excellent sealing and high barrier performance, effectively isolating oxygen, moisture, and light to extend the shelf life of the contents.
Casting and Rolling: Cast aluminum alloy into slabs, controlling thickness and surface quality.
Cold Rolling: Cold roll the cast slab to the required thickness, increasing strength and surface finish.
Annealing Treatment: Eliminate internal stress to enhance the ductility and flexibility of the aluminum foil.
Surface Treatment: Perform bright, matte, or composite treatment as required.
Slitting: Cut the annealed sheet into rolls of desired width and length.
Winding and Packaging: Wind into coils and package with moisture-proof and collision-proof materials.
8021 Aluminum Foil vs. 8011 Aluminum Foil: 8011 aluminum foil is another commonly used foil in the packaging industry, sharing similar characteristics with 8021 but at a slightly lower cost and lower purity.
8021 Aluminum Foil vs. 8079 Aluminum Foil: 8079 aluminum foil is another high-performance packaging alloy with excellent barrier properties but lower flexibility and higher cost compared to 8021.
| Alloy | 8021 |
| Temper | O, H18, H22, etc. |
| Thickness | 0.018mm - 0.2mm |
| Width | 100mm - 1600mm |
| Length | C |
| Surface Treatment | Bright, Matte, Single-Sided Bright, Double-Sided Bright |
| Core Diameter | 76mm, 152mm |
| Applications | Cold-formed pharmaceutical aluminum foil packaging, soft aluminum foil for batteries, flexible packaging |
| MOQ | 1-3 tons |
| Aloy | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Other:Each | Other:Total | Al |
| 8021 | 0.15 | 1.2-1.7 | 0.05 | - | - | - | - | - | 0.05 | 0.15 | Remainder |
Tensile Strength σb (MPa) | Elongation δ10 (%) | Cupping Test Value (mm) |
90 – 110 | 13-18 | 6.2 – 7.3 |
1. High Strength and Ductility: Capable of withstanding multiple stretching and complex forming processes while maintaining packaging integrity.
2. Outstanding Sealing Performance: Effectively prevents moisture and oxygen penetration, ensuring stability and sealing of the packaging material.
3. Corrosion and Oxidation Resistance: Performs excellently in humid environments, extending product lifespan.
4. Hygienic and Environmentally Friendly: Complies with food and pharmaceutical packaging standards, with no harmful substances released.
5. Excellent Heat Sealing Ability: When combined with plastic films or paper, it exhibits good heat sealing performance.
1. Pharmaceutical Packaging: Such as blister packaging and pharmaceutical aluminum-plastic composite films, offering excellent sealing and moisture resistance.
2. Food Packaging: Used for chocolate, candy, instant food, etc., keeping food fresh and moisture-proof.
3. Battery Soft Pack Materials: Lithium and polymer battery casings, providing good protection and sealing.
4. Industrial Foil: Used as insulation material and corrosion-resistant material in construction and industrial equipment.
5. Daily Chemical Packaging: Such as toothpaste tubes and cosmetic packaging, ensuring the product remains uncontaminated.
Cold-Formed Blister Foil: Used to package temperature- and humidity-sensitive drugs. A PVC layer is coated on the aluminum base, allowing various shapes to be formed using cold-forming technology.
PTP Blister Foil: (Press-Through Packaging) Typically used for solid dose drug packaging, made from aluminum base plates with a heat-sealable PVC layer. The foil is heat-sealed to the blister card, and when tablets are pushed through the foil, the backing material remains attached to the card.
Tropical Blister Foil: Designed for tropical climates where high humidity can affect drug quality and efficacy. This foil provides excellent moisture and humidity resistance, ensuring drug stability and potency.
Alu-Alu Foil: A multi-layer product consisting of an aluminum base plate and adhesive interlayers, commonly used for highly sensitive drug packaging such as vaccines and biologics.
