In the dairy packaging industry, yogurt lids not only serve the basic functions of sealing and protection, but also directly affect product shelf life, food safety, and brand image. As a professional aluminum bottle cap material manufacturer, MC Aluminum has found through extensive practice that 8011 aluminum foil, with its stable material properties, excellent sealing performance, and outstanding printability, has become one of the most mature and reliable core materials for yogurt lid sealing structures.

Why Has 8011 Aluminum Foil Become the Mainstream Choice for Yogurt Lids?

8011 aluminum alloy belongs to the Al-Fe-Si series, specifically developed for packaging applications and widely recognized for food-grade use. Its chemical composition is stable and impurity levels are low, making it especially suitable for sealing materials that come into direct contact with food.

For yogurt lids, 8011 flexible aluminum foil demonstrates outstanding performance in the following aspects:

• Barrier properties: Effectively blocks oxygen, moisture, and odors, extending yogurt shelf life and preserving flavor.

• Non-toxic and safe: 8011 aluminum foil complies with strict certifications such as FDA and EU food contact regulations, making it safe for direct contact with dairy products.

• High temperature resistance: Capable of withstanding temperatures from –40 °C to 200 °C, suitable for frozen yogurt, hot-filled yogurt, and various storage conditions.

• High tensile strength: Even at ultra-thin gauges, it maintains excellent tensile and compressive strength, ensuring lids do not deform during transportation and storage.

8011 Aluminum Foil Technical Specifications

Lamination and Heat Sealing Performance Parameters

Core Functions of Printed 8011 Aluminum Foil in Yogurt Lids

1.Reliable heat sealing performance: The typical heat sealing temperature of 8011 aluminum foil ranges from 180 °C to 210 °C, offering excellent compatibility with standard heat sealing machines and enabling fast, efficient packaging.

2.Excellent sealing performance: When combined with heat sealing layers such as PE, PP, or composite films, 8011 aluminum foil forms a stable and uniform sealing interface during sealing, effectively preventing leakage and secondary contamination while extending shelf life.

3.Superior printability: With a smooth surface and good ductility, printed 8011 aluminum foil is suitable for gravure and flexographic printing, allowing clear branding and product information that enhances shelf appeal.

4.Good opening experience: By precisely controlling foil thickness and laminate structure, yogurt lid foil made from 8011 aluminum achieves easy peel performance without tearing or residue, improving consumer experience.

5.Recyclability: Aluminum is a highly recyclable material, making it an environmentally friendly option for manufacturers and consumers with access to proper recycling channels.

Typical Structures of Printed 8011 Aluminum Foil Yogurt Lids

In practical applications, printed 8011 aluminum foil is usually supplied in laminated structures. Common structures include:

• Printing layer / 8011 aluminum foil / heat sealing layer

• Printing layer / coating layer / 8011 aluminum foil / heat sealing layer

The heat sealing layer can be matched to different cup materials, such as:

• PP cups

• PS cups

• PET cups

Through structural optimization, stable performance can be ensured under different filling temperatures and sealing parameters.

The 8011 aluminum foil for aluminum bottle caps produced by MC Aluminum offers multiple advantages, including food-grade quality, thorough degreasing, fewer pinholes, and excellent flatness. It is widely used in yogurt lids, wine bottle caps, cosmetic bottle caps, beverage bottle caps, and other packaging applications.