Aluminium ROPP Caps and PP Caps

In the packaging industry, the choice of bottle caps directly affects the sealing, safety and market competitiveness of products. Aluminium ropp caps (Roll-On Pilfer-Proof aluminum caps) and PP aluminum caps( aluminum pilfer proof caps)are two mainstream solutions, each with its unique characteristics and application scenarios, occupying an important position in different fields.

ROPP aluminum cap

Ropp aluminum cap has become the first choice for high-end packaging with its excellent anti-theft performance and sealing performance. It is made of 8011 or 3105 aluminum alloy, manufactured by deep drawing process, and the surface can be sprayed with coating to enhance corrosion resistance.

The core advantage of this cap is the tamper-proof function: when the cap is opened for the first time, the lock ring will break, clearly showing whether the product has been illegally opened, which is crucial for industries with extremely high safety requirements such as medicines and alcohol.

Market application scenarios:

Wine and food: Ropp aluminum caps are widely used in wine, spirits and olive oil bottles. Their sealing can prevent liquid volatilization and oxidation, while enhancing the high-end feel of the product.

Pharmaceutical field: Antibiotic bottles, vaccine bottles, etc. use Ropp aluminum caps to ensure that the drugs are not contaminated during transportation and storage. The internal EPE lining further enhances the leak-proof performance.

Daily chemicals and chemicals: cosmetics, pesticides and other products also rely on the sealing and chemical resistance of Ropp aluminum caps to prevent leakage or deterioration of contents.

Aluminum PP cap

Aluminium pp caps are also made of pure aluminum, but the structural design focuses more on convenience and re-sealing. The caps are divided into inner caps and outer caps. The inner caps are fixed to the bottle mouth by threads or buckles. The outer caps are equipped with an annular anti-theft piece or a pull ring. When the outer caps are opened for the first time, they are separated from the inner caps and the anti-theft piece is broken, indicating that the package has been opened.

Market application:

Beverage industry: Bottled water and functional beverages generally use PP aluminum anti-theft caps, and the pull-ring design takes into account both anti-theft and instant convenience.

Food packaging: Glass bottle packaging for honey, sauces, etc. uses PP aluminum anti-theft caps to prevent contamination and allow consumers to open and close multiple times to extend the shelf life.

Daily chemical products: Large refill bottles of shampoo and shower gel use push-pull aluminum caps, which are anti-theft and easy to pour out liquids to avoid waste.

Original source: https://www.alubottlecaps.com/a/aluminium-ropp-caps-and-pp-caps.html

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