What Is a 28mm ROPP Aluminum Cap?
The ROPP (Roll-On Pilfer Proof) cap is a threaded aluminum cap formed by a rolling process. Known for its strong sealing, tamper-evident functionality, and sleek appearance, it is widely used in glass bottle packaging across various industries. The 28mm ROPP cap is a globally recognized neck diameter standard, offering excellent compatibility—particularly in the wine, beverage, health supplement, pharmaceutical, and condiment markets.
Key Specifications
| Product Name | 28mm Glass Bottle ROPP Cap |
| Diameter | 28mm |
| Height | 15mm / 18mm / Customizable |
| Material | Aluminum 8011 H14/H16 |
| Type | Screw Cap (Non-refillable) |
| Liner | PE / TPE |
| Decoration | Offset printing, heat transfer, hot stamping, screen printing, labeling |
| Color Options | Green, Black, Custom Colors Available |
| Logo | Customizable |
| OEM/ODM | Accepted |
| Packaging | Carton and pallet / Custom packaging available |
| Origin | Zhengzhou, Henan, China |
| Payment Terms | T/T, L/C, etc. |
| Samples | Free |
| MOQ | 50,000 pieces |
Unique Advantages of the 28mm Aluminum ROPP Cap
1. Outstanding Sealing Performance
The rolled thread structure ensures a secure physical seal that effectively blocks air, moisture, and contaminants—preserving product freshness, ideal for wines, spirits, and beverages.
2. Reliable Tamper-Evident Design
Features a tamper-evident band that provides a clear visual indication if the product has been opened, enhancing consumer safety and reinforcing brand trust.
3. Lightweight & Eco-Friendly
Made from lightweight aluminum, it reduces shipping costs and carbon emissions. Fully recyclable, it aligns with global sustainability goals and strengthens your brand’s environmental responsibility.
4. Attractive and Customizable
The smooth aluminum surface is ideal for various decoration methods—enhancing shelf appeal and allowing creative branding opportunities.
5. User-Friendly Opening
Designed for easy twist-off. The breakable tamper band offers a satisfying “first-open” experience that consumers recognize as a sign of product freshness.
Application Scenarios
Wine & Spirits: Prevents leakage and counterfeiting while preserving taste.
Non-Alcoholic Beverages: Juices, soft drinks, mineral water—ensuring freshness and flavor retention.
Edible Oils & Condiments: Offers tight sealing to prevent oxidation and spoilage.
Pharmaceuticals & Supplements: Ensures product purity and consumer safety.
Extensive Customization Options to Support Brand Differentiation
Color Customization: Available in any Pantone color via spraying or anodizing
Print Options: Offset printing, screen printing, hot stamping (gold/silver), UV printing
Tamper-Proof Features: Laser-etched codes, embossed logos, tamper-proof pull rings
Thread Variants: Compatible with various bottle neck threads, shoulder angles, and capping machine parameters
How to Choose a Reliable 28mm ROPP Cap Supplier?
Choosing the right cap manufacturer is essential. Key criteria include:
Production Capacity & Quality Control
Ensure the supplier operates advanced production lines with robust QC systems to guarantee consistency and reliability.Customization Capability
Confirm the supplier offers tailored services including color matching, logo printing, and unique structural designs.Lead Time & After-Sales Service
Assess the supplier’s ability to meet deadlines and provide professional support when needed.Industry Experience
Opt for a manufacturer with a proven track record in cap production—experienced suppliers offer valuable insights and flexible solutions.
