The 30mm refers to the closure's inner neck size, which is a standard dimension suitable for a wide variety of bottles-particularly whiskey, vodka, and other spirits, as well as premium beverage packaging. The perforated tamper-evident band at the bottom ensures once opened, the cap cannot be restored, effectively preventing tampering or counterfeiting.
Four Key Advantages of the 30mm Aluminum ROPP Cap
1. Superior Sealing Performance
Made from high-purity aluminum with a precision liner, the aluminum ROPP cap forms a perfect 360-degree seal with the bottle neck after roll-on application. This airtight, moisture-proof, and light-blocking design preserves the product's flavor, freshness, and shelf life. Whether protecting volatile spirits or oxidation-sensitive edible oils, it provides the most reliable barrier.
2. Elegant Appearance & Unlimited Creativity
Aluminum's natural premium texture gives the closure a distinctive appeal. With advanced silk-screen printing, offset printing, hot stamping, or embossing techniques, we can showcase your logo, graphics, or custom design beautifully. From minimalist matte black to bold metallic silver or vibrant multicolor artwork, our caps help your product stand out on the shelf.
3. Excellent Tamper-Evidence & Security
The built-in tamper-evident ring is the core safety feature of ROPP caps. Once opened, the band cannot be restored, offering consumers a clear and trustworthy anti-counterfeit signal-crucial for brand protection and market integrity.
4. Eco-friendly & Sustainable
Aluminum is one of the world's most recyclable materials. Choosing aluminum ROPP closures not only ensures premium packaging quality but also enhances your brand's eco-friendly image. With growing consumer awareness of sustainability, this adds long-term brand value.
Product Information
| Diameter | 30 mm |
| Height | 35 mm, 44 mm, 60 mm (standard; customizable) |
| Type | Roll-on Pilfer-Proof (ROPP) screw cap |
| Material | Aluminum 8011 H14 |
| Bottle Compatibility | Glass bottles / PET bottles |
| Liner Options | PE wad, EPE liner, Saranex liner, composite liners |
| Color Options | Gold, silver, black, green, blue; customized colors & logo printing available |
| Printing Methods | Silk-screen, side printing, hot stamping, embossing, etc. |
| Samples | Available |
| Logo | Customizable |
| Packaging | Carton + pallet |
| MOQ | 80,000 pieces |
Application Fields
Alcohol & Spirits
Wine, whiskey, vodka, baijiu, and other premium liquors, combining elegance with tamper-resistance.Beverages
Mineral water, juices, and carbonated drinks, ensuring freshness.Edible Oils
Olive oil, flaxseed oil, and other premium oils, preventing oxidation.Pharmaceuticals
Syrup and oral solution bottles, guaranteeing secure sealing and product safety.
FAQ
Q1: Can a 30mm ROPP cap be reused?
A: No. ROPP caps are designed as single-use tamper-evident closures. Once opened, they cannot be fully restored.
Q2: What are the common heights for 30mm ROPP caps?
A: Standard heights include 35mm, 44mm, and 60mm, but customization is available for specific bottle types.
Q3: Which bottles are compatible with 30mm ROPP aluminum caps?
A: They fit glass bottles and PET bottles, widely used for wines, spirits, mineral water, olive oil, and pharmaceutical syrups.
Q4: What liner options are available?
A: EPE foam liners, Saranex liners, and composite liners are available, tailored to different products such as alcohol, beverages, or medicines.
Q5: Do you support custom colors and logo printing?
A: Yes. We offer multi-color printing, hot stamping, embossing, and anodizing to achieve your brand’s unique design.
Q6: Are 30mm ROPP caps compatible with automated bottling lines?
A: Absolutely. They are widely used on high-speed automated capping machines, ensuring stable and efficient sealing.
Q7: Do these caps meet food safety standards?
A: Yes. Our aluminum ROPP caps comply with FDA, EU, and other international food-contact safety standards, making them safe for use in food, beverage, and pharmaceutical packaging.
