In the modern food packaging industry, heat sealing technology has become a core method for ensuring product freshness and safety. Among various packaging materials, 8011 aluminum foil stands out as the preferred choice for yogurt lids and other lightweight packaging applications due to its excellent sealing performance, durability, and food safety compliance.

8011 aluminum alloy belongs to the Al-Fe-Si series, featuring outstanding deep-drawing capability and flexibility. The O temper represents a fully annealed condition, which makes the aluminum foil soft and highly ductile. This allows the foil to conform perfectly to different cup shapes, providing a solid foundation for achieving a tight and reliable heat seal.

8011 O aluminum foil is one of the most commonly used materials for yogurt lids. After lamination with suitable heat-seal coatings or films, its mechanical strength, sealing performance, and temperature resistance are significantly enhanced, fully meeting the requirements of laminated packaging structures.

Common Structures

• Aluminum Foil / PP Lacquer (Standard)

• Aluminum Foil / PS Lacquer (Standard)

• Aluminum Foil / Heat-Seal Layer

• PET / AL / Heat-Seal Lacquer (PE · EVA)

Heat Sealing Advantages of 8011 Aluminum Foil

1.High Sealing Strength:
Heat seal strength ≥ 30 N/15 mm, effectively preventing oxidation and bacterial contamination.

2.Uniform Heat Distribution:
Excellent thermal conductivity ensures even heat sealing, avoiding local burn-through or incomplete seals.

3.High Temperature Resistance:
Capable of withstanding heat sealing temperatures up to 200°C without additional reinforcement.

4.Tear Resistance:
High tensile strength ensures the sealed edges do not tear easily, improving packaging durability.

5.Cost Efficiency:
Compared with other premium alloys, 8011 aluminum foil offers a more competitive price
(approximately USD 0.5-0.8 per kg).

Product Specifications – Yogurt Lid Aluminum Foil

Performance Characteristics of 8011 Aluminum Foil for Yogurt Lids

1.Excellent Barrier Properties:
Moisture-proof, oxygen barrier, and light-blocking, effectively extending shelf life.

2.Superior Heat Sealability:
Bonds firmly with plastic cup rims, ensuring reliable sealing.

3.Strong Mechanical Performance:
Resistant to bursting and puncturing, ensuring transportation safety.

4.Outstanding Ductility:
Soft foil suitable for stamping into various yogurt lid diameters, ensuring a tight fit.

5.High Temperature Resistance:
Maintains shape and sealing performance at heat sealing temperatures of 120-150°C.

6.Easy Peelability:
Designed to balance sealing strength and consumer-friendly opening without damaging the cup rim.

7.Food Safety:
Meets food-grade standards, clean surface, non-toxic, odorless, and suitable for high-temperature sterilization.

8.Environmentally Friendly & Recyclable:
Aluminum is 100% recyclable, supporting sustainable packaging initiatives.

Comparison with Other Packaging Materials

As a professional manufacturer of aluminum bottle cap materials, MC Aluminum produces 8011 yogurt aluminum foil caps, which have few pinholes, excellent barrier and heat-sealing properties, are clean, have a smooth surface, meet food-grade standards, and are resistant to high temperatures, making them an ideal aluminum foil covering material.