The screw aluminum caps produced by HAOMEI Aluminum are made from food-grade aluminum alloy, precisely crafted through multiple processes such as stamping, thread forming, liner processing, and surface coating/printing. Featuring a standardized thread design, these caps provide excellent opening and sealing performance, and are widely used in the packaging of beer, fruit wine, sparkling wine, and other carbonated beverages. With advantages such as lightweight structure, reliable sealing, and premium appearance, beer screw aluminum caps have become the mainstream closure solution for the beer industry.
Beer screw aluminum caps, also known as ROPP (Roll-On Pilfer-Proof) caps, are designed to form threads on the glass bottle neck while incorporating a pilfer-proof ring. This provides a convenient, safe, and re-sealable packaging solution, standing in sharp contrast to the traditional crown caps (commonly known as “beer caps”).
Product Specifications
| Name | Aluminum ROPP cap |
| Diameter Range | 26mm, 29mm, 30mm, 31.5mm (standard sizes) |
| Height Range | 15mm–60mm (optional) |
| Material | Aluminum 8011 |
| Colors | Gold, silver, black, green, or custom colors |
| Liner Options | EPE liner, PE liner, easy-tear membrane, anti-counterfeit liner |
| Type | Screw cap |
| Feature | Non-refillable design |
| Customization | Available |
| Samples | Provided upon request |
| MOQ | 80,000 pieces |
Key Features of Beer Screw Aluminum Caps
Easy Opening: Unlike crown caps that require a bottle opener, screw aluminum caps can be easily twisted off by hand, greatly improving consumer convenience—ideal for outdoor, home, and casual drinking occasions.
Re-sealable Function: Once opened, the cap can be re-tightened to preserve carbonation and freshness, making it especially practical for large bottles or consumers who prefer multiple servings.
Tamper-Evident Security: The pilfer-proof ring at the bottom breaks upon first opening, leaving a clear trace of tampering and ensuring product integrity.
Excellent Sealing: Equipped with food-grade liners, the caps tightly adhere to the bottle neck, ensuring reliable sealing to prevent leakage or spoilage of beer.
Aesthetic & Customizable Design: The aluminum surface allows for a variety of printing, embossing, and color finishes, supporting brand image enhancement and stronger visual appeal on shelves.
Applications of Tamper-Proof Aluminum Caps
Glass bottled beer (all varieties)
Fruit wines, hard sodas, sparkling wines
Low-alcohol carbonated beverages
Premium and custom-designed alcoholic beverages
Advantages Over Traditional Crown Caps
Compared with traditional bottle caps, beer screw aluminum caps not only offer superior sealing and tamper-proof performance, but also excel in design flexibility and recyclability. By ensuring safety and freshness while supporting eco-friendly packaging and branding needs, they have become the ideal closure choice for the modern beer industry.
