AA 3105 and AA 8011 Aluminum ROPP closures
Aluminum ROPP closures (Roll-On Pilfer Proof caps) are commonly used in the beverage and food industries.
What are ROPP closures?
ROPP closures are aluminum caps that roll onto the neck of a bottle to create a tamper-evident seal. "ROPP" stands for Roll-On Pilfer Proof, referring to the method of application and tamper-evident function of the cap. They are designed to ensure that the bottle has not been opened before purchase.
- Alloy: Typically made from aluminum alloys such as AA 3105 or AA 8011.
- Thickness: Typically ranges from 0.20 mm to 0.40 mm, depending on the application and design requirements.
What is an aluminum closure?
An aluminum closure is a cap or lid made of aluminum used to seal containers, usually bottles. Aluminum closures are popular due to their lightweight, corrosion resistance, and ability to form various shapes. They often come with liners or sealing elements to ensure sealing and tamper-evident packaging.
Features of AA 3105 and AA 8011 Aluminum ROPP closures
- 1. Tamper-evident: ROPP closures use a unique design, including a series of rolling ribs or beads, to provide visible evidence if the closure has been tampered with.
- 2. Sealing mechanism: The closure is applied by rolling it onto the bottle neck, compressing the aluminum to form a tight seal. This mechanism helps prevent leakage and maintains product integrity.
Customization: Various finishes, colors, and embossing can be used to meet brand requirements.
Types: Threaded, non-threaded
Colors: Black, blue, gold, red, silver, white, yellow
Advantages of AA 3105 and AA 8011 Aluminum ROPP closures
Aluminum ROPP closures offer cost-effectiveness, sealing (and barrier) properties, compatibility with contents, ease of opening for consumers, and are often resealable, meeting product, packaging, and environmental regulations.
Durability: Aluminum ROPP closures are corrosion-resistant and can withstand various environmental conditions, suitable for both indoor and outdoor storage.
Leak-proof: The rolling mechanism ensures a tight seal, effectively preventing leaks and spills.
Tamper evidence: The design helps consumers identify if the product has been tampered with, ensuring product safety and integrity.
Applications of AA 3105 and AA 8011 Aluminum ROPP closures
Aluminum closures are used to seal glass bottles containing mineral and spring waters, non-alcoholic and alcoholic beverages, pharmaceuticals, technical contents, or juices.
Aluminum ROPP (Roll-On Pilfer Proof) closures are widely used in the beverage and pharmaceutical industries due to their excellent sealing performance and tamper-evident features.
- Beverage bottles (e.g., spirits, wines, and mineral waters)
- Food jars (e.g., sauces, dressings)
- Pharmaceutical and cosmetic products
Beverages: Commonly used to seal bottles of spirits, wines, and soft drinks.
Pharmaceuticals: Used for packaging pharmaceuticals and other health-related products to ensure tamper-evidence and safety.
Cosmetics: Used for packaging cosmetics requiring tamper-evident seals.
Manufacturing Process of AA 3105 and AA 8011 Aluminum ROPP closures
- Stamping: Aluminum sheets are stamped into disk shapes for the closure.
- Molding: The disks are then shaped into ROPP forms using specialized machines to create the rolling features.
- Painting: Typically, a layer of paint is applied to the closure to enhance corrosion resistance and provide a smooth surface for printing or labeling.
What size are ROPP closures?
ROPP closures come in various sizes, usually measured by the diameter of the closure. Common sizes include:
- 28 mm Aluminum ROPP closures
- 30 mm Aluminum ROPP closures
- 31.5 mm Aluminum ROPP closures
- 33 mm Aluminum ROPP closures
- 38 mm Aluminum ROPP closures
The size of the chosen closure depends on the bottle neck finish and the packaging requirements of the product.
Haomei Aluminum is China’s largest aluminum closure supplier, capable of providing a full range of solutions for various cap needs, including aluminum screw caps, ROPP caps, small vial seals, Omnia caps, twist-off caps, EOE ends, and cosmetic packaging.
