Beverage container caps require excellent sealing performance to prevent leakage, sufficient strength to withstand pressure during transportation and storage, compliance with food safety standards to avoid contamination, and good processability along with cost-efficiency.

Applications of 3105 aluminum closure sheet in beverage caps have demonstrated its widespread use in packaging for alcoholic beverages, soft drinks, and other products—particularly in aluminum caps due to its excellent sealing properties and attractive appearance. The 3105 closure sheet features excellent deep-drawing performance, with material strength, elongation, and processability meeting the requirements of automated cap manufacturing processes. It resists wrinkling or cracking during forming. Additionally, the sheets are flat, free from roll marks and oil stains, which facilitates high-quality printing with clear, sharp patterns.

The 3105 H14 aluminum closure sheet offers high plasticity in the annealed condition, moderate plasticity in semi-cold work hardening, and low plasticity after cold hardening, which helps achieve effective sealing structures during processing. Its good weldability also supports secure attachment to bottle bodies.

Technical Features of 3105 Aluminum Closure Sheet

1.Excellent Rust Resistance: As an aluminum-manganese alloy, it maintains an attractive appearance and resists rust.

2.Good Electrical Conductivity: With the addition of 0.3% copper, conductivity reaches 41%, suitable for specialized applications.

3.Good Workability: Offers good ductility and formability, suitable for stamping, deep-drawing, and other forming processes.

4.Corrosion Resistance: Resists corrosion from air, water, and chemical agents, ideal for humid environments.

5.Lightweight: Reduces overall packaging weight, making transportation and handling easier.

6.Wide Application: Extensively used in cap manufacturing, including for alcoholic beverages, soft drinks, cosmetics, and pharmaceuticals.

Specifications for 3105 Aluminum Cap Stock

Mechanical Properties of 3105 Aluminum Alloy

Chemical Composition of 3105 Aluminum Alloy (%)

MC Aluminum, as a professional manufacturer of aluminum closure sheet coils for bottle caps, can perform phospho-chromate treatment and apply DOS coatings to 3105 aluminum roll-on pilfer-proof (ROPP) cap sheets, as well as print in a variety of colors. We offer complete solutions for a range of bottle cap requirements, including aluminum screw caps, ROPP caps, vial closure, Omnia caps, twist-off caps, EOE (easy-open ends), and cosmetic packaging.