HAOMEI Aluminum supplies a wide range of sealing closures for liquor bottles, beverage bottles, wine bottles, and food containers. Among these, aluminum closures-especially screw caps and ROPP caps-are widely used for wine bottle sealing.
The HAOMEI tamper-evident aluminum cap, also known as an aluminum ROPP cap or aluminum screw cap, features a non-refillable design. Once opened, the tamper-evident ring remains on the bottle neck, clearly indicating that the bottle has been opened. These caps can be sealed using automatic or semi-automatic capping machines. Notably, the original closure is manufactured without thread lines; the threads are formed during sealing under the pressure of the capping machine and the bottle neck.
The 28mm aluminum ROPP cap can be equipped with liners such as PE, TEP, silicone gaskets, and others. Depending on the liner choice, these tamper-evident aluminum caps are widely used for wine and spirits packaging (whiskey, brandy, rum, vodka), non-carbonated beverages, health products, and craft packaging. They are compatible with both glass and aluminum bottles. In addition, the caps can be printed in multiple colors or embossed/debossed with custom logos.
28mm Custom Color Options
We offer a wide variety of color finishes to match your brand identity:
Classic Metallic Shades: Silver, gold, and other timeless metallic tones that highlight professionalism, premium quality, and purity-ideal for wine, spirits, and gourmet oils.
Vibrant Colors: Bold red, blue, green, and other saturated tones that catch consumer attention, emphasizing youthful energy and individuality-perfect for juices, non-carbonated soft drinks, and modern beverages.
Matte Finishes: Matte black, matte white, and other understated shades that convey minimalist elegance-suited for premium, modern product designs.
We also provide custom printing services, enabling you to add logos, slogans, or unique patterns on the top or side of the cap, strengthening your brand recognition.
Surface Finishing Techniques for 28mm Tamper-Evident Aluminum ROPP Caps
Offset/Pad Printing: Branding, batch codes, sidewall text.
Hot Stamping (Gold/Silver) & Spot UV: Highlighted logos, security marks, subtle patterns.
Embossing/Debossing/Top Embossed Medallion: Enhances tactile experience and elevates the “opening ritual.”
Core Advantages of Aluminum ROPP Caps
Superior Sealing: Ensures leak-proof performance, prevents oxidation and contamination, and is especially effective for volatile liquids.
Tamper-Evident Security: The unique ring design clearly shows if the bottle has been opened, protecting brand integrity.
User-Friendly: Easy to open with a simple twist, requiring no additional tools.
Premium Appearance: Metallic texture combined with fine printing elevates the product’s visual appeal.
Sustainability: Made from 100% recyclable aluminum, fully supporting eco-friendly and sustainable packaging.
28mm Aluminum ROPP Cap Price
Market Reference Prices:
Standard 28mm Aluminum ROPP Cap: approx. USD 0.03–0.06/pc
Premium Customized Version (multi-color printing + embossed logo): approx. USD 0.07–0.12/pc
Final pricing depends on order quantity, specifications, and customization requirements.
The cost of aluminum closures is influenced by aluminum ingot price, processing techniques, dimensions, surface treatments, and printing methods. Prices may also vary between manufacturers.
For accurate quotations, please contact our sales team directly. Our experts will provide one-on-one professional service and deliver a transparent and detailed quotation based on your needs.
FAQ
Q: Can 28mm caps be used on both glass and PET bottles?
A: Yes, but different neck finishes and tooling are required. For PET bottles, we recommend confirming wall thickness and support ring strength with the bottle supplier.
Q: Will there be color variations between batches?
A: We use custom baking finishes, standardized color samples, and spectrophotometers to control ΔE within acceptable ranges. For consistent results, we recommend ordering key volumes in a single batch.
Q: Which liner is recommended for spirits packaging?
A: For high-alcohol or flavored formulations, we suggest barrier liners or a functional plug + sealing liner combination to minimize evaporation and aroma loss.
Q: What if the cap feels too tight or too loose when first opened?
A: Adjust capping torque, rolling depth, and roller angle. If necessary, optimize liner hardness and cap wall thickness.
