Dos Oil Coated Aluminium Foil for Bottle Cap

Updated : Dec. 11, 2023
Table of Contents
  1. Learn about DOS oil coating
  2. DOS oil coating principle
  3. Benefits of DOS Oil-Coated Aluminum Foil for Bottle Caps
  4. Dos Oil Coated Aluminium Foil for Bottle Cap Specifications
  5. Dos Oil Coated Aluminium Foil For Bottle Cap Applications
  6. Conclusion

Bottle caps typically use oiled aluminum foil to seal and preserve the contents of the bottle. The choice of aluminum alloy for bottle caps depends on a variety of factors, including the specific requirements of the application. However, the most commonly used aluminum alloy for bottle caps is usually 8011.

Alloy 8011 is a wrought alloy commonly used in applications requiring a combination of excellent formability, high strength and good barrier properties. It has good corrosion resistance and is suitable for use in food and pharmaceutical packaging due to its non-toxic nature.

Dos Oil Coated Aluminium Foil for Bottle Cap

The oil coating on 8011 aluminum foil helps improve its performance in terms of corrosion resistance and ease of processing during manufacturing. It also acts as a lubricant during the molding process.

Learn about DOS oil coating

DOS is a clear, colorless, odorless liquid plasticizer recognized for its exceptional ability to increase the flexibility and durability of materials. Manufacturers quickly realized its potential in combination with aluminum foil, especially for bottle caps. The DOS oil coating adds a layer of protection against oxidation and ensures the longevity of the packaged product.

DOS oil coating principle

Understanding the chemical complexity of DOS oil coatings is critical to understanding their importance in the packaging industry.

DOS consists of dioctyl sebacate and forms a stable film on the surface of aluminum foil, providing an impermeable barrier against moisture, gases and contaminants. This protective layer extends the shelf life of the bottleā€™s contents and preserves their freshness.

Benefits of DOS Oil-Coated Aluminum Foil for Bottle Caps

a. Enhanced Durability and Flexibility

The DOS oil coating provides a flexible and durable barrier, preventing the aluminum foil from becoming brittle or losing its shape. This ensures that bottle caps remain intact, even under challenging conditions such as transportation and storage.

b. Corrosion Resistance

Aluminum is naturally resistant to corrosion, but the DOS oil coating takes this protection a step further. It shields the aluminum surface from environmental factors, making it an ideal choice for packaging materials that need to withstand varying climates and handling.

c. Improved Seal Integrity

The DOS-coated aluminum foil contributes to better seal integrity for bottle caps. This is essential for preserving the quality and safety of the packaged contents, preventing leaks, and maintaining a sterile environment for sensitive products.

d. Environmental Friendliness

DOS oil coating is not only highly effective but also environmentally friendly. The coating is biodegradable, making it a sustainable choice for companies striving to reduce their environmental impact.

Dos Oil Coated 8011 Aluminium Foil for Bottle Cap

Dos Oil Coated Aluminium Foil for Bottle Cap Specifications

Alloy 8011, 3105
Temper H14, H16
Thickness 0.19-0.24mm
Width 330-1000mm
Type sheet Surface treatment Aluminum surface is treated with phosphate chromate and dos.
Application wine bottle caps, cosmetic bottle caps, medical bottle caps, beverage bottle caps, anti-theft caps, etc.

Dos Oil Coated Aluminium Foil For Bottle Cap Applications

The DOS oil-coated aluminum foil has found applications across various industries, ranging from pharmaceuticals to food and beverages. Its versatility and adaptability make it a preferred choice for manufacturers seeking reliable and efficient packaging solutions.

a. Dos Oil Coated Aluminium Bottle Cap for Pharmaceuticals

The pharmaceutical industry requires strict packaging standards to ensure the integrity of drugs. DOS oiled aluminum foil meets these requirements by providing a safe, contamination-free environment for pharmaceutical products.

  • Alloy: 8011 is commonly used in pharmaceutical packaging due to its excellent formability, strength and corrosion resistance.
  • Temperature: H18 or H19 temper is often selected for pharmaceutical applications because it provides high hardness and good barrier properties.
  • Thickness: Thickness can vary based on the specific requirements of pharmaceutical packaging, but is typically in the range of 20 to 25 microns.

b. Dos Oil Coated Aluminium Bottle Cap for Food and Beverage

DOS coated aluminum foil is becoming increasingly popular in the food and beverage sector for its ability to preserve freshness and prevent contamination. It is particularly suitable for packaging items such as condiments, oils and beverages.

  • Alloy: 8011 is a suitable choice for food and beverage packaging due to its non-toxic nature and good barrier properties.
  • Temper: H14 or H24 temper is commonly used in food and beverage applications because it provides a balance between strength and formability.
  • Thickness: Thickness can vary depending on specific packaging requirements, but for closures in food and beverage applications, thickness is typically in the 15 to 30 micron range.

Dos Oil Coated Aluminium Bottle Cap for Food and Beverage

c. Dos Oil Coated Aluminium Bottle Cap for Cosmetic and Personal Care

The cosmetics and personal care industries benefit from the protective properties of DOS oiled aluminum foil for packaging sensitive products such as lotions, creams and perfumes.

  • Alloy: 8011 is also a suitable choice for packaging of cosmetics and personal care products.
  • Condition: Cosmetic and personal care applications are available in H16 or H26 condition to balance strength and formability.
  • Thickness: Similar to food and beverage applications, thickness may vary but is typically in the 15 to 30 micron range.

It is important to note that these are general recommendations only and the specific requirements of each application may influence the selection of alloy, condition and thickness. Additionally, local regulations and industry standards should be considered when selecting materials for packaging applications.

While DOS oiled aluminum foil offers many advantages, there are still challenges that need to be addressed, such as cost considerations and potential variations in coating thickness.


DOS oil-coated aluminum foil for bottle caps represents a remarkable evolution in packaging technology. Its unique combination of the inherent qualities of aluminum with the protective benefits of DOS oil coating makes it a game-changer across various industries.

As research and development continue to drive innovation in packaging materials, DOS-coated aluminum foil stands as a testament to the industry's commitment to delivering efficient, sustainable, and high-performance solutions.

Related Topics: bottle caps Aluminium bottle cap packaging Aluminum Aluminum Closure

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