30x60mm Aluminum Screw Caps for Wine with High Strength Aluminum Alloy
The 30x60mm Aluminum Screw Cap for Wine is a premium closure designed for wine producers, boutique wineries, and beverage packagers seeking a combination of high mechanical performance, reliable sealing, and attractive appearance. Manufactured from high-strength aluminum alloy and produced under strict quality controls, these screw caps provide excellent barrier properties, consistent torque performance, and superior resistance to corrosion and deformation. The 30x60mm size is a versatile standard suitable for a wide range of wine bottles including many larger or specialty formats.
highlights:
- Size: 30mm diameter × 60mm height
- Material: High-strength aluminum alloy (anodized or lacquered finish options)
- Liner options: Heat-seal, induction, EVOH, PE, or butyl-lined variants for tailored sealing
- Applications: Still wines, fortified wines, sparkling wines (suitable for some pressurized applications with appropriate liner), olive oil, vinegar, spirits, and specialty beverages
Materials & Construction
- Base material: High-strength aluminum alloy (commonly 5052 or custom alloyed grades depending on mechanical requirement and formability). Alloy selection prioritizes:
- Good cold-forming capability for deep draws and tall cap bodies
- Corrosion resistance in contact with wine vapors and cleaning chemicals
- High yield strength to resist denting and maintain thread form
- Surface treatment:
- Anodizing — increases surface hardness and corrosion resistance; accepts dyes for colored finishes
- Organic lacquer coating — improves compatibility with adhesives and decorative printing
- Decoration:
- Offset or screen printing
- Hot stamping (foil)
- Embossing or debossing logos
- Full-color digital printing (for short runs or high-detail artwork)
- Liner materials and sealing systems:
- Heat-seal with PE or EVOH — creates strong hermetic seal, good for still wines
- Induction seal (foil) — used for tamper-evidence and additional barrier
- Butyl rubber liner — excellent for aging wines where micro-oxygen transfer (MOT) control is required
- Metalized film or EVOH multilayer liners — provide enhanced oxygen barrier
Mechanical & Chemical Properties
Below is a typical set of parameters for 30x60mm screw caps made from high-strength 5xxx-series aluminum alloy. Values will vary with specific alloy, temper, and production process.
| Parameter | Typical Value |
|---|---|
| Outside diameter | 30.0 mm |
| Height | 60.0 mm |
| Wall thickness | 0.35–0.50 mm (depending on gauge) |
| Net weight (per cap) | 7.0–9.0 g |
| Material | Aluminum alloy (e.g., 5052 H32 or equivalent) |
| Tensile yield strength | 150–250 MPa (dependent on alloy/temper) |
| Ultimate tensile strength | 200–300 MPa |
| Elongation at break | 8–18% |
| Corrosion resistance | High (anodized or lacquered finish enhances) |
| Operating temperature range | -20°C to +80°C (short excursions higher) |
| Oxygen transmission | Depends on liner (butyl < EVOH < PE) |
| Torque range (recommended application) | 3–8 Nm (factory torque to fit and seal) |
| Color/finish options | Natural silver, dyed anodized, painted lacquer, printed |
Note: Exact mechanical properties and weight depend on alloy selection, temper, wall thickness, and decoration choices. Suppliers can provide mill certificates on request.
Features & Benefits
- High strength aluminum alloy construction:
- Improved resistance to denting and mechanical damage during handling and transportation
- Maintains consistent thread profile for reliable application torque and tamper-evidence
- Tall 60mm body:
- Provides an elegant appearance and extended printable surface area for branding
- Additional axial height allows for multiple liner layers or tamper bands
- Multiple liner/sealing options:
- Tailor oxygen ingress and sealing performance to the wine style — from tight barrier for long aging to controlled micro-oxygen transfer for maturation
- Excellent corrosion performance:
- Anodized or lacquered finishes prevent reaction with wine vapors and cleaning agents
- Ideal for acidic products like wine and vinegar
- Decoration flexibility:
- Full-color graphics, metallic foils, and embossing for premium presentation
- High-definition printing enables consistent brand reproduction
- Lightweight and sustainable:
- Aluminum is infinitely recyclable with lower transportation weight compared to heavier closures
- Supports sustainability claims when using recycled aluminum feedstock
- Consistent torque and application:
- Engineered threads ensure predictable application on automated capping lines
- Reduces line stoppages and waste from cross-threading or poor sealing
Applications
- Still wines (red, white, rosé)
- Fortified and dessert wines
- Sparkling wines (requires specific liner and pressure evaluation)
- Wine meant for extended bottle aging (paired with butyl or specialized liners)
- Small-batch or premium wine lines where branding and appearance matter
- Spirit, vinegar, and premium oil packaging where a tall decorative cap is desirable
- Promotional and event bottles with custom printing and short runs
Compatibility & Selection Guidance
- Bottle finish: Ensure the cap’s internal thread pattern matches your bottle’s external thread standard. Common standards include 30/60 and specific proprietary finishes. Provide bottle neck drawings to supplier for precise tooling.
- Liner selection:
- For long-term aging: choose butyl or specialized controlled-MOT liners
- For shelf-ready still wines with minimal aging: PE or EVOH heat-seal liners are common
- For tamper evidence and extra barrier: combine induction-sealable liners with heat-seal layers
- Torque control: Determine required application torque and lubrication. Test with your production line to set capper parameters; recommended starting torque 3–8 Nm depending on liner compression and bottle neck finish.
- Decoration: For scratch-prone handling, consider anodized base plus lacquer overprint or protective varnish.
- Regulatory & food safety: Liner compounds and lacquer inks should comply with relevant food-contact regulations (e.g., FDA 21 CFR, EU 10/2011). Request compliance documentation from your supplier.
Quality Control & Packaging
- Visual inspection for surface defects, color consistency, and print quality
- Dimensional verification (diameter, height, thread form) against tooling specs
- Torque and pull-off tests to validate sealing performance with target bottles
- Seal integrity testing (vacuum, leakage)
- Material traceability and mill certificates available upon request
- Typical packing: bulk in boxes (e.g., 5,000–10,000 pcs per carton) or palletized with protective inner packaging. Custom inner boxes or co-packing services available for small runs.
Ordering Information
When requesting a quote, please provide:
- Required quantity
- Cap size and specific bottle finish or drawing (thread pitch, diameter)
- Alloy preference (standard 5052 or alternative)
- Desired surface finish and decoration method
- Liner type and any induction sealing requirements
- Target application torque and any production-line specifics
- Regulatory requirements for food contact in target markets
MOQ, lead times, and tooling costs vary with decoration complexity and whether custom threading/tooling is required. Typical lead time for stock specifications: 2–6 weeks. Custom tooling: 6–12 weeks depending on complexity.
