30x60 Screw Cap Aluminum Closure

The 30x60 screw-cap aluminum closure is a type of bottle cap made from aluminum alloy. The "30x60" in its name refers to its specification—designed to fit bottle mouths with an approximate diameter of 30 mm and a height of about 60 mm. It achieves sealing through the internal thread structure of the cap engaging with the external thread of the bottle mouth, representing a mainstream sealing solution in modern packaging. The aluminum cap is usually made from 8011 aluminum alloy (such as 8011-H14 aluminum foil) and formed by stamping. Its surface can be treated with techniques such as perforation, embossing, and printing.

30 × 60 mm screw-cap aluminum closures are commonly used for wine and spirits bottles with compatible neck finishes. They are ideal for preserving aroma, flavor, and freshness, while minimizing oxygen transmission rate (OTR) and eliminating the risk of cork taint (TCA).

The 30×60 mm aluminum screw cap is a high-quality, sustainable, and consumer-friendly alternative to traditional cork stoppers. Known for its excellent aroma retention, reliable sealing performance, and versatility in brand presentation, it meets the modern packaging needs of the wine and spirits industry.

30x60 Screw Cap Aluminum Closure – Materials and Structure

Exterior: Made of lightweight and durable aluminum alloy, corrosion-resistant, and easy to decorate through coloring, embossing, or printing.
Liner: Typically uses Saranex/Saran tin or plastisol/rubber liners to ensure airtight sealing and prevent oxidation.
Sustainability: Many caps use up to 46% recycled aluminum sourced from low-carbon suppliers, reducing carbon emissions by up to 35% and being fully recyclable.

30x60 Screw Cap Aluminum Closure – Specifications

Dimensions: 30 mm in diameter and 60 mm in height — the standard size for many wine bottles with screw caps.
Compatibility: Designed to fit BVS bottle necks, ensuring a tight fit and reliable control of oxygen transmission rate (OTR).
Quality Control: Each cap undergoes sophisticated automated defect detection.

Feature	Spec / Option
Material	Aluminium alloy; tin or plastisol/rubber liner
Size	30 × 60 mm
Liner options	Saranex, Saran tin, plastisol, rubber
Branding/Color	Standard (silver, white, black, gold); custom colors too
Sustainability	Recycled content up to 46%, 35% CO₂ reduction, recyclable
Standards	Tight OTR control, ISO9001, automated QC
Compatibility	BVS neck finish (Roll-On Pilfer Proof)
Internal Coating	Food-grade protective lacquer to prevent metal-wine contact

30x60 Screw Cap Aluminum Closure Tolerances

Diameter: ±0.15–0.16 mm
Height: ±0.50 mm
Weight: 2.0–6.0 g (varies depending on liner/printing)

30x60 Screw Cap Aluminum Closure Liner Options (critical for oxygen control)

Liner Type	OTR Performance	Applications
ZINN-SARAN®	Ultra-low O₂ permeability	Premium wines, long aging
SARANEX®	Variable OTR	Versatile for most wines
EPE	Moderate barrier	Spirits, young wines
ALKOVin™ active	Oxygen-scavenging	Sensitive varietals

30x60 Screw Cap Aluminum Closure Advantages

Maintains the quality and freshness of all bottled wines.
Eliminates cork taint by avoiding contamination from cork materials.
Easy to open and reseal, providing convenience for consumers.
Environmentally friendly and recyclable, with a lower carbon footprint.
Highly customizable – available in various colors (silver, white, matte black, gold, rose, etc.) with options for embossing, printing, or branded markings.

30x60 Screw Cap Aluminum Closure Uses and Functions

Core Sealing Function

Generates axial pressure through threaded rotation, ensuring the liner tightly adheres to the bottle mouth, effectively blocking oxygen, moisture, and microbial intrusion. This significantly extends the shelf life of contents such as food, alcohol, and pharmaceuticals.

Anti-Counterfeiting and Tamper-Evident Design

Some aluminum caps feature breakable bridge points (tamper-evident ring) that leave visible traces when opened, preventing content tampering and ensuring product safety.

Convenient Opening and Reclosure

Can be manually opened without tools and re-tightened multiple times, suitable for products that require portioned use (such as edible oils and condiments).

30x60 Screw Cap Aluminum Closure Features

Tamper-Evident: Integrated tamper-evident (TE) ring and warranty strip break upon first opening.

Customization:

Printing: Up to 3 colors (offset/screen printing, hot stamping, UV).
Embossing/Debossing: Brand logos or embossed patterns.
Thread Compatibility: Pre-threaded or ROPP (Roll-On Pilfer-Proof) thread for on-site threading during bottling.

30x60 Screw Cap Aluminum Closure Applications

Widely used for still and sparkling wines, and also suitable for spirits, oils, and vinegars that require similar neck treatments.

Wines: Still wines, sparkling wines (semi-sparkling), and aged wines.
Spirits: Whiskey, vodka (alcohol content ≥40%)

Suitable for high-speed bottling lines – ROPP caps are rolled and securely tightened using capping machines.

Highly compatible with tamper-evident labeling (e.g., visible break rings or sealing strips).

Typical Application Scenarios

Field	Representative Products	Core Requirements
Alcoholic Beverages	Baijiu, Wine, Spirits	Long-term sealing and freshness preservation, anti-counterfeiting
Food	Olive oil, Condiments, Honey	Oxygen barrier, resealability, visual presentation
Premium Beverages	Functional drinks, Sparkling water	Airtightness, easy portability and opening
Pharmaceuticals/Cosmetics	Oral liquids, Essences	Contamination prevention, dosage control

Why 30x60 Screw Cap Aluminum Closures Are Widely Used

Material Performance Advantages

High barrier properties: The dense structure of aluminum blocks gas and light, preventing oxidation and spoilage of contents.
Lightweight and durable: Lighter and more impact-resistant than glass or iron caps, reducing breakage during transport.

Environmental and Economic Benefits

Recycling aluminum requires only 5% of the energy used in primary aluminum production, aligning with sustainability trends; high cost-effectiveness for mass production.

Market Adaptability

Alcohol Sector: In China, over 60% of Baijiu bottles use aluminum caps, and aluminum caps are rapidly gaining market share in wine (e.g., 95% in New Zealand).

Food & Chemicals: Widely used in packaging for olive oil, balsamic vinegar, premium drinking water, and condiments, with annual consumption reaching billions.

Design Flexibility

Supports complex pattern printing, embossing, and customized shapes, enhancing brand recognition and product value.

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