30x60mm Aluminum Closures for Wine Bottles with Reinforced Seal
Our 30x60mm aluminum closures are designed specifically for still and lightly sparkling wines, combining premium shelf appeal with reliable, reinforced sealing performance. This format is now the industry standard for many wineries transitioning from natural cork to modern screw-cap systems.
Below is a detailed, yet quick-to-read overview of the product’s features, structure, and application advantages.
| Parameter | Description |
|---|---|
| Product type | 30x60mm aluminum wine bottle closure (screw cap) |
| Material | Aluminum alloy, suitable for deep drawing & threading |
| Typical application | Still wine, aromatic whites, rosé, light reds, RTD beverages |
| Seal system | Reinforced liner (Saranex / Tin-Saran / foam / PE options) |
| Bottle finish | 30H60 BVS (standard wine bottle screw-neck) |
| Printing & decoration | Offset printing, hot-foil stamping, embossing, debossing |
| Opening type | Roll-on pilfer-proof (ROPP) style screw cap |
| Compliance | Food-contact compliant per common EU / FDA frameworks |
Aluminum Alloy & Chemical Composition
We use a controlled aluminum alloy optimized for closure stock, balancing formability, thread-retention strength, and anti-corrosion behavior in contact with wine vapors and external humidity.
A typical alloy comparable to AA 8011 / 3105 is used:
| Element | Typical Range (wt.%) |
|---|---|
| Aluminum (Al) | Balance |
| Silicon (Si) | 0.40 – 0.80 |
| Iron (Fe) | 0.50 – 0.90 |
| Copper (Cu) | ≤ 0.10 |
| Manganese (Mn) | 0.20 – 0.60 |
| Magnesium (Mg) | ≤ 0.30 |
| Zinc (Zn) | ≤ 0.25 |
| Titanium (Ti) | ≤ 0.10 |
| Others (each) | ≤ 0.05 |
| Others (total) | ≤ 0.15 |
Note: Composition can be tailored within standard ranges to match specific forming or certification requirements.
Dimensional & Technical Specifications
The 30x60mm format is standardized to fit most BVS wine bottle necks, ensuring compatibility across major glass suppliers.
Main Dimensions
| Parameter | Typical Value | Notes |
|---|---|---|
| Internal diameter | 30 mm | Matches 30H60 neck finish |
| Height | 60 mm | Standard for 750 ml still wine bottles |
| Shell thickness | 0.20 – 0.23 mm | Optimized for roll-on threading & stability |
| Thread type | BVS screw thread | Formed during roll-on application |
| Top panel diameter | 30–31 mm | Slightly domed or flat, as required |
Mechanical & Surface Properties
| Property | Typical Range / Description |
|---|---|
| Tensile strength | 120 – 160 MPa (as supplied in closure stock) |
| Elongation (A50) | ≥ 8 % |
| Temper | H14 / H16 equivalent, optimized for forming |
| Internal lacquer thickness | 4 – 8 µm, food-grade epoxy / polyester |
| External coating thickness | 6 – 10 µm, colored lacquer or varnish |
| COF (inside) | Controlled for efficient capping |
| Corrosion resistance | Tested in SO₂ / humidity wine-cabinet tests |
Reinforced Seal System
The sealing liner is critical to wine preservation. Our 30x60mm closures can be supplied with different liner configurations depending on the oxygen transfer rate (OTR) and aroma-protection needs.
Typical Liner Options
| Liner Type | Structure | OTR Level | Recommended For |
|---|---|---|---|
| Standard PE foam | PE foam only | Higher OTR | Early-drinking wines, entry-level |
| Saranex-lined | Foam + Saranex barrier film | Medium OTR | Aromatic whites, rosés, fresh reds |
| Tin-Saran | Foam + tin layer + Saran barrier | Very low OTR | Premium whites, ageable wines |
| EPE multi-layer | Expanded PE with barrier layers | Customizable | Specific winemaker oxygen profiles |
Reinforcement Characteristics
| Feature | Benefit |
|---|---|
| Uniform liner compression | Consistent seal around entire bottle finish |
| Enhanced torque retention | Reduces risk of loosening during transport |
| Improved CO₂ resistance | Suitable for lightly sparkling / frizzante |
| Controlled oxygen ingress | Helps maintain color, aroma and SO₂ levels |
Closure Performance
The reinforced seal and alloy selection produce consistent, repeatable performance on modern bottling lines.
| Performance Parameter | Typical Value / Description |
|---|---|
| Application torque | 15 – 25 N·m (depending on bottle & liner) |
| Breakaway torque | 8 – 18 N·m after conditioning |
| Seal integrity | Leak-free at 0.5 – 1.0 bar internal pressure |
| Temperature resistance | −20 °C to +60 °C (normal distribution range) |
| Shelf-life expectation | 5+ years when correctly stored & applied |
| Pilfer resistance | Bridges / tamper band deform on first opening |
Actual figures may vary based on bottle glass quality, neck tolerance, and chosen liner.
Design, Branding, and Decoration
These 30x60mm aluminum closures provide a large printable surface, turning the capsule into a brand element.
| Design Option | Description |
|---|---|
| Body printing | Up to 6–8 colors offset or UV printing |
| Top embossing | Logo emboss or deboss on top disc |
| Hot-foil stamping | Metallic bands, logos, or text for premium look |
| Matte / gloss finish | Surface textures matching brand positioning |
| Specialty inks | Metallic, pearlescent, soft-touch, or tactile varnish |
| Side embossing | Grip ribs or decorative rings |
This flexibility allows wineries to harmonize closure design with labels, capsules, and brand identity while keeping a highly functional package.
Applications in the Wine Industry
The 30x60mm screw cap has been widely adopted across wine styles. Its reinforced seal helps maintain flavor stability from bottling line to consumer.
Typical Wine Applications
| Wine Type | Benefits of 30x60mm Reinforced Seal |
|---|---|
| Aromatic whites | Protects delicate esters and thiols, reducing oxidation |
| Rosé wines | Maintains color, freshness, and fruit-forward aromas |
| Light to medium reds | Predictable oxygen ingress for short to medium aging |
| Organic / low-SO₂ wines | Strong protection against premature oxidation |
| Entry-level table wines | Reliable, user-friendly closure, cost-effective |
| On-trade / by-the-glass | Easy resealing, convenient for restaurants and bars |
For gently sparkling or frizzante wines, the reinforced liner and proper bottling parameters help manage modest internal pressure while preserving effervescence.
Operational Advantages for Wineries
Using 30x60mm aluminum closures with reinforced seals can simplify bottling and improve product consistency.
| Operational Aspect | Advantage |
|---|---|
| Bottling line efficiency | High-speed capping with reduced rejections |
| Consistency | Uniform torque and seal compared with natural cork |
| Storage & logistics | Excellent stability, stackability, and shock resistance |
| Quality control | Measurable torque and seal parameters, easier monitoring |
| Consumer convenience | Simple twist-open, no corkscrew required |
This closure format also reduces the risks of cork taint (TCA) and random oxidation, which can otherwise affect a significant portion of traditionally corked wine.
Recommended Storage and Handling of Closures
To preserve coating, liner performance, and hygiene, closures should be stored under controlled conditions before use.
| Condition | Recommendation |
|---|---|
| Storage temperature | 15 – 25 °C |
| Relative humidity | 40 – 65 % |
| Sunlight exposure | Avoid direct UV and strong heat sources |
| Packaging | Keep in original bags/cartons until use |
| Pre-use handling | Minimize dust, oil, and mechanical damage |
Following these guidelines supports smooth operation, stable application torque, and consistent long-term sealing.
Why Choose 30x60mm Aluminum Closures with Reinforced Seal
These closures are a proven solution for wineries that need:
- Reliable, low-variance sealing performance
- Protection against oxidation and contamination
- Premium branding possibilities on cap body and top disc
- Consumer-friendly opening, with no risk of cork taint
By combining a carefully selected aluminum alloy, high-precision forming, and a reinforced liner system tuned to wine requirements, the 30x60mm closure has become a trusted standard for both everyday and premium wines.
