HAOMEI Aluminum is a leading manufacturer of aluminum bottle caps and printed metal sheets, offering a wide range of products. Our caps directly serve the wine and spirits industry, food and beverage producers, pharmaceutical companies, and other packaging material suppliers.
Aluminum ROPP (Roll-On Pilfer-Proof) caps are essential components used to protect and preserve products such as alcoholic beverages, medicines, and soft drinks. Cap sizes range from 20 mm to 53 mm in diameter, with a minimum daily production capacity of 200,000 caps—ensuring reliable delivery for your needs. We offer:
Material options: AA8011 and AA3105 aluminum alloys
Customizable liner materials (Polyethylene, PE liners, PVC liners, tin foil liners)
Food-grade internal coating
Advanced printing techniques including side printing, hot stamping (gold/silver), screen printing, embossing
Customized screw caps and threaded ROPP closures made to special requirements
Compatibility with glass and plastic bottles
Common Sizes of Aluminum ROPP Caps
| Size (mm) | Main Applications | Liner Type | Temperature Resistance |
| 15*12 | Perfume samples, essential oil bottles, pharmaceutical droppers | EPE liner, unlined | -20 ~ 60 °C |
18*12 | 10 ml small beverages, liquor samples | PE liner | ≤90 °C |
19.8*12.4 | 20 ml medicines (e.g. cough syrups) | PVC full-surface liner | ≤121 °C (high-temp sterilization) |
22*15 | Medicinal syrups, beverage samples | EPE, Saranex | -20 ~ 80 °C |
28*18 | Mini wine bottles, condiments | Screw-seal structure | Depends on liner type |
28*18 | Mineral water, juices, condiment bottles | EPE, Saranex, tin foil | Depends on liner type |
30*35 | Wine, olive oil, vinegar | PE or PVC full-surface liner | PE ≤90 °C, PVC ≤121 °C |
30*60 (industry standard) | Wine/spirits (whisky, vodka, etc.) | PE, tin foil, PVC options | PE ≤90 °C, PVC ≤121 °C |
31.5*24 | Wine, olive oil, edible oils | Saranex, tin foil, EPE | -20 ~ 90 °C |
32.2*10, 39.8*9.6 | Pharmaceuticals (oral liquids, medicine vials) | PVC ring liner or PE liner | PVC ≤121 °C |
40.5*11.2, 51.1*11 | Large-volume pharmaceuticals, chemical liquids | PVC ring liner | ≤121 °C |
60*30, 60*40 | Premium spirits, gift-packaged wines | EPE, tin foil, Saranex | -20 ~ 90 °C |
ROPP Aluminum Closure Selection Guidelines
(1) Match Container Type:
Glass bottles generally use standard ROPP caps with tamper-evident rings.
PET bottles require thread compatibility verification.
(2) Environmental Adaptability:
Acidic or alcoholic contents require liners with enhanced chemical resistance.
For high-temperature sterilization, recommended wall thickness ≥0.35 mm.
(3) Automated Production Compatibility:
For automated capping lines, ensure chosen ROPP caps are compatible with sealing equipment.
(4) Liner Material:
ROPP caps typically include different liner types such as PE pads, PVC liners, tin foil.
Liner temperature resistance and sealing performance vary; choose based on liquid properties and storage conditions.
Aluminum ROPP caps, with their diverse sizing and excellent performance, have become the preferred choice worldwide for packaging wines, beverages, medicines, and edible oils. From small essential oil bottles to premium wine and spirits gift packaging, the right aluminum ROPP cap design is essential for product protection and brand image.
