Screw On Aluminum Closures for Wine Bottles with Unique Finishing Touch
12/08 2025
Screw-on aluminum closures have evolved into a premium packaging solution for the wine industry. Designed for both functional performance and brand differentiation, these closures offer precise sealing, excellent product protection, and nearly limitless finishing possibilities.
Screw-on aluminum wine closures are engineered closures, typically made from aluminum alloy strip, designed to:
- Protect wine from oxidation, leakage, and contamination
- Ensure consistent opening torque and resealability
- Support advanced decoration and branding options
- Offer recyclability and material efficiency
These closures are suitable for still and lightly sparkling wines, performing consistently across various filling conditions and logistics environments.
2. Features & Benefits
2.1 Functional Features
| Feature | Description | Benefit to Customer |
|---|
| Precise thread profile (BVS/BVP) | CNC-defined, standardized threads to suit common wine neck finishes | Reliable sealing, consistent closure performance |
| Integrated liner system | PVDC-free, Saranex®, or tin/saran compatible liners | Controlled oxygen transmission, aroma retention |
| High dimensional stability | Tight tolerance on wall thickness, diameter, and height | Excellent line performance and crimp quality |
| Controlled opening torque | Defined knurling and liner compression parameters | Consumer-friendly opening, reduced risk of slippage |
| Internal lacquer coatings | Food-contact compliant epoxy/PU/solvent-free systems | Protection against wine corrosion & taint |
| External protective coatings | Scratch and scuff-resistant overvarnishes | Long-lasting shelf appearance |
| High recyclability | Made from 100% recyclable aluminum | Supports circular economy and sustainability targets |
| Compatibility with high-speed lines | Stable geometry and hardness for automated capping up to industry-standard speeds | Reduced downtime and wastage |
2.2 Aesthetic & Branding Features (Unique Finishing Touch)
| Finishing Option | Description | Branding Advantages |
|---|
| Gloss / Matt Lacquer | Full-body coating with customized gloss level | Visual differentiation on shelf |
| Metallic / Pearl Effects | Metallic pigments and pearlescent finishes | Premium, luxury appearance |
| Embossing & Debossing | Raised or recessed logos and patterns on shell | Tactile brand recognition & anti-counterfeiting signal |
| Top & Side Printing | Up to multi-color offset or digital printing | High-impact, wrap-around artwork |
| Hot Foil Stamping | Gold, silver, or custom foil effects on top and/or skirt | Enhanced perceived value and visibility |
| Engraved Tear-off Lines | Decorative knurl/tamper-evident ring designs | Visual cues of authenticity and tamper evidence |
| Special Texture Lacquers | Soft-touch, sand-blast, or rubberized effect coatings | Distinct, memorable consumer handling experience |
| Spot UV / Matt-Gloss Mix | Selective glossy/matt surface patterning | Depth and contrast in graphics |
3. Material & Chemical Composition
Aluminum closures for wine usually utilize alloys from the 3xxx or 8xxx series, optimized for forming, curl, and threadability, while ensuring corrosion resistance under wine-contact conditions.
Typical alloy options (example reference only; can be tailored):
3.1 Typical Alloy Composition – EN AW-8011A (Closures)
| Element | Symbol | Typical Range (wt.%) |
|---|
| Aluminum | Al | Balance (≈97–99) |
| Iron | Fe | 0.6 – 1.0 |
| Silicon | Si | 0.4 – 0.8 |
| Copper | Cu | ≤ 0.10 |
| Manganese | Mn | ≤ 0.20 |
| Magnesium | Mg | ≤ 0.05 |
| Zinc | Zn | ≤ 0.10 |
| Others (each) | — | ≤ 0.05 |
| Others (total) | — | ≤ 0.15 |
3.2 Alternative Alloy – EN AW-3105 (Decorative Performance)
| Element | Symbol | Typical Range (wt.%) |
|---|
| Aluminum | Al | Balance (≈95–97) |
| Manganese | Mn | 0.3 – 0.8 |
| Magnesium | Mg | 0.2 – 0.8 |
| Silicon | Si | ≤ 0.6 |
| Iron | Fe | ≤ 0.7 |
| Copper | Cu | ≤ 0.3 |
| Zinc | Zn | ≤ 0.4 |
| Others (each) | — | ≤ 0.05 |
| Others (total) | — | ≤ 0.15 |
Note: Actual alloy selection is tuned to end-use: forming severity, braking torque requirements, and compatibility with wine chemistry.
4. Mechanical & Technical Specifications
4.1 Mechanical Properties of Closure Sheet (Before Forming)
| Property | Unit | Typical Value Range | Test Standard |
|---|
| Tensile Strength (Rm) | MPa | 120 – 180 | EN ISO 6892-1 |
| 0.2% Yield Strength (Rp0.2) | MPa | 60 – 120 | EN ISO 6892-1 |
| Elongation A50 | % | 10 – 20 | EN ISO 6892-1 |
| Hardness (Brinell) | HBW | 30 – 55 | EN ISO 6506 |
| Coefficient of Thermal Expansion | 10⁻⁶/K | 22 – 24 | Typical for aluminum |
| Density | g/cm³ | 2.70 | — |
4.2 Dimensional Characteristics of Finished Closures (Typical)
| Parameter | Unit | Typical Range | Remarks |
|---|
| Nominal Diameter | mm | 25, 28, 30 | BVS-30x60 common for wine |
| Closure Height | mm | 30–65 | Standard: 25x60, 30x60, etc. |
| Shell Wall Thickness | mm | 0.18 – 0.23 | Depending on design & alloy |
| Top Panel Thickness | mm | 0.23 – 0.28 | For embossing & foil stamping |
| Thread Standard | — | BVS, BVP, custom | Compatible with ISO bottle necks |
| Weight per Closure | g | 2.5 – 4.0 | Varies with size & design |
5. Liner & Barrier Performance
Choosing the right liner is critical for wine stability and flavor preservation. Typical liner types and indicative performance:
5.1 Liner Types
| Liner Type | Material System | OTR (25 °C, dry)* | Typical Use Cases |
|---|
| Standard PE Foam | Expanded PE | Higher | Entry-level wines, rapid consumption |
| Saranex®-based | Multi-layer PVDC barrier | Medium – Low | Aromatic whites, rosés, early-drinking reds |
| Tin/Saran Composite | Tin foil + Saran layer | Very Low | Premium whites, age-worthy wines, red longevity |
| PVDC-free Barrier | Alternative polymer systems | Medium | Markets with PVDC restrictions |
*OTR = Oxygen Transmission Rate; exact values depend on closure/liner system and test conditions.
5.2 Typical Performance Figures
| Performance Parameter | Unit | Typical Value |
|---|
| Wine Scalping/Taint Risk (tin/saran) | — | Extremely low |
| Headspace Oxygen Ingress (12 months) | mg O₂ | < 1.0 (optimized system) |
| CO₂ Retention (lightly sparkling) | bar loss | < 0.5 bar / 12 months |
| Torque Retention (after aging) | % | ≥ 80% of initial value |
6. Surface Coating & Decoration Technology
6.1 Internal Coating
| Coating Type | Function | Suitability |
|---|
| Epoxy / Epoxy-Modified | Corrosion protection, non-scaling | Wide range of wines |
| BPA-NI Systems | Bisphenol A non-intent formulations | Markets with BPA restrictions |
| Solvent-Free / Water-based | Low VOC emissions | Sustainability-driven operations |
6.2 External Coating & Print
| Layer | Typical Thickness (µm) | Description |
|---|
| Basecoat | 6 – 10 | Color foundation; for brand identity |
| Overvarnish | 4 – 8 | Gloss or matt protection; increased scratch resistance |
| UV Spot Varnish | 3 – 6 (selective) | Local gloss / texture effects |
| Inks (Offset/UV) | — | High-definition multicolor graphics |
7. Process Compatibility & Line Performance
7.1 Bottling Line Compatibility
| Parameter | Typical Capability |
|---|
| Capping Speed | Up to 25,000 – 30,000 bph (line dependent) |
| Application Torque Range | 10 – 20 N·m (by closure size & bottle spec) |
| Torque Variation (at install) | ≤ ±10% (with correct settings) |
| Capper Head Compatibility | Standard screw-on head for BVS/BVP threads |
| Liner Compression Consistency | Engineered to give repeatable sealing force |
7.2 Storage & Transport
| Condition | Recommended Range | Comments |
|---|
| Storage Temperature | 5 – 35 °C | Avoid condensation on closures |
| Relative Humidity | 40 – 70 % | Minimize corrosion & lacquer whitening |
| Packaging | Shrink-wrapped trays, boxes | Protect from dust & mechanical damage |
8. Applications in the Wine Industry
8.1 Wine Types
| Wine Category | Closure Characteristics Recommended | Benefits |
|---|
| Aromatic Whites | Medium–low OTR barrier liner (e.g., Saranex®) | Preserves freshness, fruit, floral notes |
| Rosé | Medium–low OTR; decorative finishes with high color fidelity | Attractive shelf appeal, flavor retention |
| Early-drinking Reds | Medium OTR; strong branding on skirt | Balanced micro-oxygenation, consistent profile |
| Premium, Age-worthy Whites | Very low OTR liners (e.g., tin/saran) | Extended cellaring potential |
| Premium Reds | Custom OTR, strict torque control, high barrier liner | Greater stylistic control & reduction of cork taint |
| Lightly Sparkling | Specific design validated for up to ~2 bar | Safe, attractive closure with adequate gas retention |
8.2 Market Segments
| Segment | Typical Requirements | Role of Unique Finishing Touch |
|---|
| Supermarket / Retail | High-speed line performance, strong shelf impact | Bright colors, clear branding, durable lacquers |
| Premium & Boutique Wines | Limited runs, custom designs | Embossing, foil stamping, complex artwork |
| Export / Global Brands | Robustness, consistency, anti-counterfeiting elements | Specialized printing, security graphics, coding |
| HoReCa (On-Trade) | Easy and clean opening, resealability | Tactile effects, logo on top for visibility in bars |
9. Unique Finishing Touch – Design Possibilities
Below are some customizable attributes tailored for brand-specific designs:
| Attribute | Options | Example Use Case |
|---|
| Color Palette | Pantone, RAL, or customer-specific references | Matching winery corporate colors |
| Surface Gloss Level | High gloss, semi-matt, full matt | Differentiation by range / origin |
| Top Embossing | Logo, crest, initials | Premium ranges, heritage branding |
| Skirt Deboss Text | Winery name, year, region | Storytelling and anti-copy feature |
| Tear-off / Perforation Style | Straight, wave, step, or customized flute | Signature opening experience |
| Special Texture | Soft-touch, micro-knurled, brushed metal effect | Enhances tactile perception |
| Serial / QR Marking | Inline printing or laser coding | Traceability, consumer engagement |
10. Quality & Compliance
10.1 Regulatory Compliance
| Area | Applicable Reference |
|---|
| Food Contact Safety | EU Regulation (EC) No. 1935/2004, local FDA/GB etc. |
| Good Manufacturing Practice | GMP for food-contact materials |
| Heavy Metals / Migration | Compliant with relevant migration limits |
| VOC & Emissions | Optional low-VOC / solvent-free solutions |
10.2 Quality Control Parameters
| Inspection Item | Frequency (Typical) | Target / Criterion |
|---|
| Dimensions (Ø, height) | Per production batch | Within specified drawing tolerances |
| Coating Thickness | Per coil / shift | As per customer spec (± tolerance) |
| Adhesion / Cross-Hatch | Per batch | No flaking or blistering |
| Opening Torque Test | Random sample per pallet | Within customer’s defined range |
| Visual Defect Check | Online 100 %/ sampling | No dents, color deviation, or print defects |
| Liner Integrity | Batch sampling | No pinholes, even distribution |
11. Sustainability & Environmental Profile
| Aspect | Description |
|---|
| Material Recyclability | 100% recyclable aluminum |
| Scrap Recovery | Fully recyclable production scrap |
| Lightweight Design | Reduced material usage per closure vs. heavies |
| Coating Options | BPA-NI and low-VOC choices available |
| Logistics Optimization | Low weight reduces transport emissions |
Recycling aluminum closures supports closed-loop recycling where recovered metal can be re-melted indefinitely with limited quality loss.
| Category | Advantages |
|---|
| Product Protection | Reliable sealing, controlled OTR, corrosion-resistant surfaces |
| Brand Image | High-level customization in color, texture, and decoration |
| Consumer Use | Easy opening, resealable, consistent experience |
| Industrial | Suitable for high-speed lines, consistent torque & dimensions |
| Sustainability | Recyclable, light-weight, and compliant with environmental goals |
13. Typical Technical Data Sheet Snapshot
| Parameter | Unit | Typical Value* |
|---|
| Diameter × Height | mm | 30 × 60 (example) |
| Alloy (shell) | — | EN AW-8011A / 3105 |
| Wall Thickness (shell) | mm | 0.20 |
| Lid/Top Thickness | mm | 0.24 |
| Liner Type | — | Saranex® or equivalent |
| Internal Coating | — | Food-grade epoxy (BPA-NI optional) |
| External Finish | — | Gloss or matt lacquer, printed |
| Recommended Application Torque | N·m | 14 – 18 |
| Recommended Storage Temperature | °C | 5 – 30 |
| Recycling | — | 100% recyclable |
*Values can be tuned based on customer specification and local bottling conditions.
For customers seeking a closure that reliably protects wine quality while delivering a distinctive, premium on-shelf image, Screw On Aluminum Closures for Wine Bottles with Unique Finishing Touch provide a robust, versatile, and sustainable solution adaptable to a wide range of brand and performance requirements.
https://www.bottle-cap-lids.com/a/screw-on-aluminum-closures-for-wine-bottles-with-unique-finishing-touch.html
