HAOMEI Aluminum Ropp caps are suitable for a variety of containers in various markets. For example, glass bottles for mineral water, natural water, soft drinks, juice, and cooking oil, as well as aluminum bottles for soft drinks, beer, and wine.
ROPP caps are made by stamping aluminum into shape, then forming threads onto the neck of the bottle through a roll-on process. A tamper-evident band (pilfer-proof ring) is designed at the base of the cap, which breaks upon opening—ensuring one-time use and product integrity.
What Is a Short ROPP Aluminum Cap?
A Short ROPP Cap refers to a cap with a relatively short skirt (vertical portion), typically 15-24 mm in height, making it ideal for containers with limited neck height, such as portable liquor bottles or small pharmaceutical vials. This is in contrast to standard ROPP caps, which are usually 28-33 mm tall.
Common Short ROPP Cap Sizes
30×24 mm
33×18 mm
Liner Customization Options
Short ROPP caps can be fitted with various types of liners to meet sealing and product protection needs:
EPE Liners: Suitable for general beverages and food sealing
Saranex Liners: Enhanced sealing and oxygen barrier, ideal for high-end products
Product Specifications for Short ROPP Aluminum Caps
| Diameter | 18-31.5 mm (customizable) |
| Height | 15-24 mm (customizable) |
| Material | Aluminum 8011 H14 |
| Type | Screw Cap (Roll-On Pilfer-Proof) |
| Liners | EPE, PE, Saranex, Tin Foil, etc. |
| Color Options | Gold, silver, red, black, blue, green – supports Pantone color printing |
| Printing Methods | Offset, screen, flexo, hot stamping, spot UV |
| Tamper Evident | Breakable band or teeth compliant with EU packaging regulations |
| OEM / ODM | Accepted |
| Samples | Available upon request |
| Package | Cartons + Wooden Pallets |
| MOQ | 80,000 pieces |
Key Features of Short ROPP Aluminum Caps
1. Tamper-Evident Security
Designed with a break-away tamper-evident ring, the cap cannot be resealed after opening-ensuring protection against refilling or tampering, ideal for pharmaceuticals and high-integrity products.
2. Airtight Freshness
The aluminum cap combined with PVC-free liners creates an airtight seal, preventing oxygen or moisture ingress and extending the shelf life of sensitive contents such as mineral water or juice.
3. Easy to Open
Smooth aluminum edges and knurled cutting-ring designs ensure the cap can be easily opened without the need for tools-a convenient user experience.
4. Eco-Friendly and Recyclable
Made from 100% recyclable aluminum, these caps align with global sustainability goals and reduce the environmental impact of packaging.
Main Applications of Short ROPP Aluminum Caps
Alcohol: Small bottles of vodka, spirits, ready-to-drink cocktails, sample-sized wines
Pharmaceuticals: Spray bottles, eye drop bottles, reagent vials
Cosmetics: Essential oil bottles, serum bottles, small skincare packaging
Food: Mini bottles of olive oil, condiments, flavoring agents
Difference Between Short and Standard ROPP Caps
| Feature | Short ROPP Cap | Standard ROPP Cap |
| Height | 15-24 mm - compact and space-efficient | 28-33 mm - taller profile for standard bottles |
| Use Case | Ideal for portable or small-capacity bottles | Suited for larger standard containers |
| Functionality | Same - both include tamper-evident bands, airtight seal, and eco-friendly aluminum | |
While manufacturing short caps may require adjusted machine settings due to their smaller size, the overall production steps (drawing, knurling, quality inspection) are consistent with standard ROPP cap production.
