ROPP (Roll-On Pilfer Proof) caps have become a preferred choice in premium sectors such as alcoholic beverages, healthcare products, soft drinks, and pharmaceutical packaging. As the core material for ROPP cap production, 3105 and 8011 aluminum sheets dominate the industry due to their excellent performance and workability.

What is ROPP Cap Aluminum Sheet?

ROPP cap aluminum sheet is specially designed for producing roll-on pilfer-proof caps. These caps are formed by mechanical rolling to tightly fit bottle necks, offering tamper-evident and anti-counterfeiting features. The aluminum material used must have excellent ductility, suitable strength, and a stable surface finish.

8011 aluminum closure sheet: With excellent deep drawing formability as its core advantage, it has a low ear-making rate and high flatness, and is suitable for the complex stretching process of long bottle caps. It is widely used in ROPP bottle caps for wine bottles and other beverages, and is suitable for the pearl cotton lining sealing structure to ensure leak-proof and spill-proof

3105 aluminum closure sheet: The magnesium content is slightly higher than that of 8011 aluminum alloy, and it has both strength and elongation, and is suitable for color printing bottle caps with high requirements for surface coating adhesion. Suitable for carbonated beverages, medical sealing caps, etc.

Aluminum Closure Sheet Specifications:

Alloy Grades: 8011, 3105

Temper: H14, H16, H18 (depending on required hardness)

Thickness Range: 0.15mm – 0.30mm

Width Range: 200mm – 1500mm (customizable)

Surface Finishes: Plain, coated, anodized, chromated

Coating Colors: Silver, gold, red, green, etc. (customizable)

Surface Quality: Free of edge cracks, burrs, and pitting; ready for high-quality printing and processing

Key Advantages of ROPP Cap Aluminum Sheets:

Excellent Formability: Suitable for high-speed multi-station stamping machines

Superior Surface Quality: Clean, scratch-free, and oil-free – ideal for printing and coating

Strong Sealing & Tamper Resistance: Provides a tight seal and anti-counterfeit protection

Corrosion Resistance: Compatible with various beverage and pharmaceutical packaging needs

Eco-Friendly & Recyclable: 100% recyclable aluminum; promotes low-carbon, green production

Operational Efficiency: Easy to install and remove during production; reduces labor costs and improves efficiency

Application Fields of 3105 / 8011 ROPP Cap Aluminum Sheets:

• Closures for liquor, wine, and spirits

• Health drink bottle caps

• Pharmaceutical closures (oral solutions, eye drops, etc.)

• Cosmetic and essential oil closures

• Food packaging lids and seals

MC Aluminum is a leading supplier of aluminum closure sheets and coils. We manufacture 8011 H14 closure sheets, 3105 H14/H16 aluminum cap coils, 1070 aluminum strip, 5182 aluminum alloy, and more. We offer complete closure solutions including aluminum screw caps, ROPP caps, vial seals, EOE ends, and cosmetic packaging components. Our products are exported worldwide and trusted by customers for their quality, fast delivery, and factory-direct pricing. Samples available upon request — you can order with confidence.