As the global wine industry increasingly pursues consistent quality, controlled aging, reduced product defects, and extended shelf life, traditional cork stoppers are facing unprecedented challenges. The 30x60mm aluminum screw cap, especially when paired with high-performance Saranex or Sarantin barrier liners, has rapidly become the preferred closure solution for modern wineries. This sealing system represents a major technological upgrade in wine freshness, protection, and packaging reliability.
Manufactured from high-strength aluminum alloy and integrated with Saranex or Sarantin liners, the 30x60mm aluminum cap achieves an ideal balance of sealing integrity, product protection, and tamper resistance. It prevents leakage, preserves aroma and flavor, enhances shelf stability, and elevates the overall packaging appearance and brand presentation.
Liner Options
Saranex Liner
SARANEX is one of the most commonly used liner options, with an oxygen permeability (OTR) of approximately 1-3 cc/m²/24 hours, allowing a small amount of oxygen to permeate the bottle. It is ideal for sealing wines designed for quick consumption.
Sarantin Liner
SARANTIN cellar linings utilize a combination of materials with extremely low permeability, achieving an oxygen translucency (OTR) of only 0.2-0.5 cc/m²/24 hours. This provides the highest level of oxygen barrier protection, thus preserving the quality of the wine. Therefore, SARANTIN is ideal for wines intended for long-term storage.
Traditional natural oak corks, due to their natural structure, exhibit highly variable OTR rates, leading to some wines from the same batch oxidizing too quickly while others undergo reduction reactions. Saranex/Sarantin provides a consistent and predictable micro-oxygen environment, ensuring the uniformity of wine aging.
Technical Features of the 30×60mm Aluminum Cap
1. High-Strength Aluminum Alloy
Made from premium aluminum alloys such as 3105 or 8011, the cap is lightweight yet strong. It withstands transportation shocks, mechanical pressure, and stacking loads without deformation.
2. Screw Design
Precision threads ensure a tight seal between the cap and the bottle neck, providing a reliable seal. The screw-on operation is convenient and prevents damage to the bottle neck or leakage.
3. Tamper-Evident Function
Optional tamper-evident rings separate upon opening, preventing resealing and ensuring product authenticity and safety.
4. Surface can be customized
Metallic color spraying, heat transfer printing, UV printing or hot stamping processes can be performed to personalize the product according to the brand image.
5. Wide Application Range
Compatible with standard 30mm glass bottles, PET bottles, and various wine and spirit packaging formats.
Product Specifications
| Product Name | 30x60mm Aluminum ROPP Cap |
| Diameter | 30 mm |
| Height | 60 mm |
| Material | 3105 / 8011 high-strength aluminum alloy |
| Liner Options | Saranex / Sarantin |
| Tamper-Evident Ring | Optional |
| Compatible Bottle Finish | 30 mm standard glass or PET bottle |
| Temperature Resistance | -20°C to 60°C |
| Surface Treatment | Coating, heat transfer, UV printing, hot stamping |
| Applications | Wine, beverages, whisky, spirits |
| MOQ | 80,000 pieces |
Why Choose 30x60mm Aluminum Caps with Saranex / Sarantin Liners
1. Safety and Reliability
The design is leak-proof and tamper-evident, ensuring safe transport, storage, and distribution.
2. Guaranteed Wine Quality
Chemically stable materials do not affect aroma or flavor.
Barrier liners protect wine from oxidation and preserve freshness.
3. Wide Environmental Adaptability
Resistant to temperature variations, humidity, and oxidation.
Suitable for global shipping and long-term storage.
4. Premium Aesthetic Customization
Multiple finishing options support brand differentiation and enhance shelf appeal.
5. Eco-Friendly and Compliant
Meets food-grade safety standards and contains no harmful substances.
Fully compliant with international packaging regulations and export standards.
