8021 aluminum foil

What is 8021 Aluminum Foil?

8021 aluminum foil is primarily composed of an alloy that includes aluminum, iron, and silicon. This alloy blend is incorporated to enhance the foil's strength and flexibility.

8021 aluminum foil is widely employed in various industries such as packaging, pharmaceuticals, and batteries due to its exceptional barrier properties, heat resistance, and flexibility.

8021 aluminum foil is utilized in various types of pharmaceutical packaging, including cold forming blister foil, PTP blister foil, tropical blister foil, and alu alu foil.

8021 Aluminum Foil Specifications for Different Applications:

Properties of 8021 Aluminum:

Chemical Composition: 8021 aluminum foil consists of 1.2% to 1.7% iron, a maximum of 0.15% silicon, a maximum of 0.05% copper, a maximum of 0.05% magnesium, and the remaining content is aluminum.

Mechanical Properties: 8021 aluminum foil showcases excellent mechanical properties including high tensile strength and elongation. The typical tensile strength of 8021 aluminum ranges between 90 and 130 MPa, and elongation falls within the range of 1% to 4%.

Physical Properties: 8021 aluminum exhibits favorable physical characteristics such as exceptional barrier properties, heat resistance, and flexibility. Its density is 2.73 g/cc, and it has a melting point between 638°C and 658°C.

Applications of 8021 Aluminum Foil:

8021 aluminum foil is widely utilized in various industries owing to its excellent barrier properties, heat resistance, and flexibility.

• Medical Cold Forming Alu Alu Foil
• Packaging Industry: Used for packaging food, pharmaceuticals, and other products that necessitate protection from moisture, oxygen, and contaminants. Commonly employed for blister packs, strip packs, and sachets. Also used to wrap chocolate, butter, and dairy products.
• Pharmaceutical Industry: Utilized for packaging tablets, capsules, and medicines requiring protection from moisture, light, and air. Also used for medical devices and diagnostic kits.
• Battery Industry: Used as a current collector in lithium-ion batteries, serving as a substrate for battery components.
• Other Industries: Applied in insulation, electronics, and aerospace.

Advantages of 8021 Aluminum Foil:

• Barrier Properties: Exhibits exceptional barrier properties, offering high-level protection against moisture, oxygen, and light.
• Flexibility: Highly flexible, easily bent, folded, and shaped without cracking or breaking, making it suitable for packaging products of various shapes and sizes.
• Heat Resistance: Possesses excellent heat resistance, capable of withstanding temperatures up to 300°C without melting or deforming.
• Compatibility: Compatible with a wide range of materials, including plastics, paper, and other metals, facilitating its use in combination with other packaging materials.

Limitations of 8021 Aluminum Foil:

• Corrosion Resistance: Limited resistance to corrosion, especially in acidic or alkaline environments, potentially compromising its barrier properties.
• Strength: Not as strong as some other aluminum alloys, such as 8011 or 8079, which may restrict its use in applications requiring high tensile strength or puncture resistance.

Benefits of Using 8021 Aluminum Foil:

1. Enhanced Molded Product Quality: Exceptional stretchability (a 70% increase compared to UACJ Foil 7μ) improves the quality of molded products, including gusset bags, standing pouches, and lamination tubes.

2. Improved Lamination Productivity: High tensile strength (a 40% increase compared to UACJ Foil 7μ) boosts productivity by preventing tearing during lamination.

3. Enhanced Product Appearance: A smoother and more uniform matte surface enhances product aesthetics, making the foil excellent for labels and external packaging.

4. Cost Reduction: Minimal pinholes (a 70% reduction compared to UACJ Foil 7μ) ensure better performance in applications such as pharmaceutical packaging, electronics packaging, retort packaging, and LL containers, reducing overall costs.

Comparison with Other Aluminum Foils:

• 8021 Foil vs. 8011 Aluminum Foil: While similar, 8011 aluminum foil is slightly less expensive and has lower purity compared to 8021 aluminum foil.
• 8021 Foil vs. 8079 Aluminum Foil: 8079 aluminum foil offers excellent barrier properties but is less flexible and more expensive than 8021 aluminum foil.

The Application of 8021 Aluminum Foil in Pharmaceutical Packaging:

• Cold Forming Blister Foil: Ideal for packaging medicines sensitive to temperature and moisture. It includes a PVC layer on top of the aluminum base and can be formed into various shapes using cold forming techniques.
• PTP Blister Foil: Commonly used for solid-dose medicine packaging. It comprises aluminum-based laminates with a heat-sealable PVC layer. The foil is heat-sealed to the blister card, and the blister backing material remains attached to the card when the tablet is pushed through the foil.
• Tropical Blister Foil: Designed for use in tropical climates where high humidity levels can impact the quality and efficacy of medication. It provides excellent resistance to moisture and humidity, ensuring medication stability.
• Alu Alu Foil: A multilayered product consisting of aluminum-based laminates with an adhesive interlayer. It is commonly used for packaging highly sensitive medicines such as vaccines or biologics.

FAQs:

• Is 8021 aluminum foil recyclable? Yes, 8021 aluminum foil is recyclable and can be reused to make new products.
• What is the thickness of 8021 foil? The thickness of 8021 aluminum foil typically ranges from 0.006mm to 0.2mm.
• Can 8021 aluminum foil be used for cooking? No, 8021 aluminum foil is not recommended for cooking or baking as it is not food-grade and may contain impurities.
• Can 8021 foil be printed on? Yes, 8021 aluminum foil can be printed on using various printing methods such as flexography, gravure, and offset printing.
• Is 8021 aluminum foil FDA approved? 8021 aluminum foil is not FDA approved, but it can be used in food packaging as long as it meets certain safety and quality standards.

8021 aluminum foil is a high-performance aluminum alloy widely utilized in various industries due to its excellent