HAOMEI Aluminum produces ROPP aluminum caps that are sealed onto bottle mouths using specialized capping machines. The caps are roll-formed to tightly fit the bottle threads and neck. Compared to traditional plastic caps or crown caps, ROPP aluminum closures offer stronger sealing performance, improved anti-counterfeiting ability, lightweight and eco-friendly properties, as well as attractive printing and decorative options.
The 28 mm diameter * 15.5 mm height ROPP aluminum cap is one of the most commonly used closure sizes in the packaging of wines, beverages, pharmaceuticals, and certain personal care products. Its liner is made of thermoplastic elastomer (TPE), which further enhances sealing and safety.
Advantages of TPE Liner
Compared to common EPE or Saranex liners, TPE liners provide significant advantages:
Excellent sealing performance: TPE has great elasticity and resilience, ensuring consistent sealing force at the bottle mouth even after long storage.
Strong chemical resistance: Suitable for alcoholic beverages, pharmaceutical liquids, and functional drinks without being easily degraded or corroded.
Food-grade and eco-friendly: Complies with EU and FDA food-contact safety standards, odor-free, and free from harmful substance migration.
Smooth opening and closing: Provides moderate torque, avoiding issues of being too tight or too loose, ensuring a better consumer experience.
These properties make TPE-lined ROPP aluminum caps especially suitable for small-sized bottled products that require long-term storage and stable transport.
Product Specifications
| Diameter | 28 mm |
| Height | 15.5 mm |
| Material | Premium 8011 / 3105 aluminum alloy |
| Liner | TPE liner |
| Process | Hot-rolled aluminum sheet stamping + precision roll-threading |
| Type | Screw cap |
| Printing Options | Multi-color screen printing, hot stamping, matte/glossy coatings, custom logo designs |
| Bottle Compatibility | Glass bottles, PET bottles, pharmaceutical bottles |
| Samples | Available |
| MOQ | 80,000 pieces |
Application Fields
Premium Spirits: Miniature liquor bottles, sample bottles of whisky/brandy/vodka
Pharmaceuticals: Oral liquid bottles, nutrition liquid bottles
Functional Beverages: Energy drinks, herbal drinks
Cosmetics: Essence bottles, small skincare serum packaging
Why Choose Our ROPP Aluminum Caps?
Extensive Experience: Years of expertise in aluminum closure manufacturing across the wine, beverage, and pharmaceutical sectors.
High-Quality Materials: Food-grade aluminum combined with premium TPE/PE/EPE liners ensures safety and performance.
Flexible Design Options: OEM / ODM support with customizable printing, colors, and branding.
Reliable Production Capacity: Fully automated production lines with an annual output exceeding 500 million caps, ensuring fast delivery.
International Certification: Compliant with ISO, SGS, FDA, and other global standards, trusted worldwide.
