We Haomei Aluminum specializes in the research, development and production of high end aluminum packaging. With 10 years of experience in custom bottle caps, our specialty is 30x35mm aluminium ROPP caps. Utilizing a ROPP (Roll-On Pilfer-Proof) design, the bottle cap securely fits the bottle neck through a CNC rolling process. The anti-tamper ring breaks simultaneously when opened, ensuring both leak-proof and tamper-proof operation, meeting food and cosmetic industry safety standards.

Core Parameters of Aluminium ROPP Cap 30x35mm:

- Dimensions

Diameter: 30mm (fits standard glass bottle neck);

Height: 35mm (including anti-tamper ring and liner space);

Thickness: Typically 0.15-0.27mm (adjustable based on cap drawing depth).

- Materials and Performance

Aluminum Alloy: 8011 aluminum alloy is preferred (excellent formability, low earing rate, and suitable for deep drawing).

- Liner Material:

PE (Polyethylene): Provides basic sealing and low cost.

EPE (Reinforced Polyethylene): Leak-proof and spill-proof, suitable for liquid packaging.

Saranex/Sarantin: High barrier properties, suitable for alcoholic beverages.

- Anti-theft Design:

Connected dot or burst design; the anti-theft ring breaks and cannot be restored after opening.

- Printing Process:

Top: Offset printing, UV printing, hot foil stamping, screen printing.

Side: Four-color offset printing, screen printing, heat shrink label.

Screen printing (300dpi resolution, supports multi-color logos/production dates), hot stamping (with adhesion ≥5N, for a high-quality look).

- Color Customization:

Anodizing (basic colors such as silver, gold, and black) and electrostatic spraying (matching any Pantone color, with color fastness ≥4 and resistance to rubbing without fading) are supported. Pantone color matching is supported, with matte and glossy finishes available.

- Special Processes:

Laser engraving (0.1-0.3mm depth, permanent and clear markings, can be used for anti-counterfeiting patterns), QR code/barcode embedding (for anti-counterfeiting and traceability).

- Minimum Order Quantity (MOQ)

Regular Order: 50,000-100,000 pieces.

- Production Lead Time

Sample Confirmation: 7-10 days.

Mass Production: 25-30 days (including quality inspection and packaging).

Aluminium ROPP cap 30x35mm, with its excellent sealing and customizability, is widely suitable for the following applications:

- Alcoholic Beverages:

Liquor, white wine, wine, red wine and yellow wine;

A butyl rubber lining locks in odor and prevents evaporation, while an anti-tamper ring prevents tampering.

- Condiments:

Soy sauce, vinegar, and cooking wine;

Corrosion-resistant material resists acids and alkalis, while a sealed lining prevents leaks and contamination.

- Beverages:

Functional beverages and juice;

Lightweight for bottled transportation, with anti-slip lining for an enhanced experience.

- Daily Chemicals/Healthcare:

Essential oils and oral nutritional solutions;

High-end customization enhances product quality, while food-grade materials ensure safety.

Selection Recommendations

- Qualification Review

Prefer aluminium ROPP caps suppliers certified by ISO 9001 (Quality Management System), FDA (Food Contact Safety), and SGS (Environmental Testing).

Confirm whether the supplier has a dedicated ROPP cap production line (such as SACMI equipment, with a capacity of up to 2,500 pieces per minute).

- Service Capabilities

Design Support: Provide 3D modeling and cap structure optimization recommendations.

Quality Inspection Standards: Support sealing tests (800kPa holding pressure), opening torque tests, and temperature resistance tests (-20°C to 60°C).

How to Order Aluminium ROPP Cap 30x35mm?

- Requirement Confirmation:

Specify the ROPP cap size, material, lining, printing requirements, and quantity.

- Sample Testing:

Mail us samples or we provide samples for testing of sealing, opening, and printing quality.

- Contract Signing:

Specify delivery date, payment method (e.g., 30% deposit + 70% balance against bill of lading), and liability for breach of contract.

- Production Follow-up:

We regularly provide production progress reports and quality inspection photos.

- Shipping&Inspection:

Shipment and receipt by logistics (inspection of sealing, printing deviation, and anti-theft ring function).