The wine screw cap with Saranex liner offers advantages such as low oxygen permeability, reliable sealing, ease of opening, broad adaptability, and cost-effectiveness, making it suitable for wines intended for short- to medium-term aging. It performs excellently in preserving freshness and preventing oxidation.
Manufactured from high-quality food-grade aluminum alloy (typically 8011), this cap is commonly produced in the 30x60mm size (custom sizes available). The integrated Saranex multi-layer co-extruded liner effectively prevents oxygen ingress and liquid leakage, while maintaining the wine’s aroma and flavor. It is widely applied in packaging for red wine, white wine, and sparkling wines.
Function of the Saranex Liner
Saranex is one of the most commonly used liner materials for wine screw caps. It consists of a layer of low-density expanded polyethylene (EPE) foam sandwiched between two layers of SX film (PE-PVDC-PE).
Key Advantages:
High Oxygen Barrier: Saranex significantly reduces oxygen transmission rates, thereby extending the shelf life of wine.
Stable Seal: Provides leak-proof sealing, suitable for global transportation and long-term storage.
Hygienic and Compliant: Conforms to FDA and EU food-contact regulations, odorless, and does not alter wine flavor.
Good Resealability: Can be reclosed after opening, suitable for multiple servings.
Product Information
| Size | 30x60mm (customizable, e.g., 30x44mm) |
| Material | Aluminum alloy (typically 8011-H16) |
| Liner Types | Saranex, EPE, PE, disc liners, tin foil liners, etc. |
| Surface Finishing | Anodizing, electrophoretic coating, printing, hot stamping, partial UV coating |
| Printing | Customizable with logos, brand colors, QR codes, anti-counterfeit features |
| Thread | Standard BVS thread, compatible with wine glass bottles |
| Opening Method | Hand-twist, with tamper-evident break ring |
| Seal Performance | ≤0.5ml/24h (inverted test at 0°) |
| Bottle Compatibility | BVS neck finish, STELVIN standard |
| Samples | Available |
| Packaging | Wooden boxes with wooden pallets |
| MOQ | 100,000 pieces |
Why Choose Us
20+ Years of Expertise in Aluminum Manufacturing
Over two decades of experience in aluminum caps and materials, serving clients in more than 100 countries and regions.Integrated Production for Reliable Delivery
End-to-end production from casting, rolling, printing, punching, lining, to packaging—ensuring consistency and fast lead times.Comprehensive Product Range
We offer a complete selection from standard to customized aluminum ROPP caps, wine caps, tamper-evident closures, and printed aluminum sheets.International Certifications for Quality Assurance
Our products meet ISO 9001, SGS, and other international standards applicable to food and pharmaceutical sectors.Strong Customization Capability
Full customization options for color, size, printing, liners, etc. Low minimum order quantities support brand differentiation and flexible purchasing.Factory Direct Supply with Competitive Pricing
As a direct manufacturer, we eliminate intermediaries and provide better pricing for equivalent or superior product quality.Professional Customer Support
Dedicated account managers provide end-to-end service, including sampling, design, logistics, and customs support.Trusted by Global Clients
Long-term partnerships with leading companies in wine, pharmaceuticals, and food sectors. Customer satisfaction rate exceeds 98%.
