Alutop is a definitive leader in the engineering and high-volume production of premium roll-on pilfer proof (ROPP) and specialized pilfer proof caps. Our closures represent the final line of defense for a product’s chemical and physical integrity. Designed to function as a sophisticated security system, Alutop caps provide an immediate, visible tamper-evident seal that guarantees consumer safety.

​By prioritizing mechanical precision and metallurgical excellence, we ensure that our closures integrate seamlessly with high-speed, automated bottling lines. Whether you are packaging life-saving pharmaceuticals or premium spirits, Alutop delivers a harmonious blend of uncompromising safety, industrial durability, and bespoke brand appeal.

High-Performance Pilfer Proof Closures

​The mechanical success of a roll on pilfer proof closure depends on its ability to form a perfect thread while maintaining a secure break-away bridge. Our caps are developed to exceed these technical expectations:

  • Advanced Tamper Evidence: Every cap is precision-scored to ensure the seal ring fractures cleanly upon the very first opening. This provides the end-user with undeniable proof of a product's virginity and safety.
  • Hermetic, Leak-Proof Sealing: We utilize high-grade alloys that, when rolled onto the bottle neck, create a gas-tight barrier. This prevents oxygen ingress and ensures zero liquid leakage, even during pressurized transit.
  • Bottling Line Synergy: Our closures are optimized for smooth, friction-free application on automatic ROPP capping machines, significantly reducing downtime caused by cap deformation.
  • Dimensional Versatility: From standard medicinal vials to extra-deep spirit bottles, we offer a massive range of diameters and heights to suit any global neck finish standard.

Why Choose Alutop for ROPP & Pilfer Proof Caps?

​As a premier provider of aluminium closures, Alutop bridges the gap between raw industrial capacity and artisanal branding.

  • Thread-Forming Consistency: Our manufacturing process ensures uniform metal thickness, allowing for consistent thread forming that won't "strip" or cross-thread during application.
  • Premium Tensile Strength: We utilize food-grade, high-tensile aluminium alloys. This provides the perfect balance of flexibility for the rolling process and structural strength for the seal.
  • Elite Anti-Counterfeiting: To protect your brand from duplication, we offer specialized printing, unique seal designs, and top-wall chamfering that are incredibly difficult for counterfeiters to replicate.
  • Specialized Liners: We don't believe in a "one size fits all" approach. We provide a variety of liners, including EPE, Saranex, and Tin-Saran, tailored to the specific acidity or alcohol content of your liquid.
  • Global Export Resilience: Our caps are trusted by international spirit houses and pharma giants because they withstand the vibration and pressure changes of long-haul shipping.

Technical Specifications & Product Basket

​We maintain an exhaustive range of sizes and decorative options to ensure your product stands out on the shelf while remaining secure.

Product Size Matrix

Product Size Matrix

Standard Caps

18mm, 20mm

22mm, 24mm

25mm, 26mm

28x15mm to 18mm

Semi-Deep Caps

28x22mm, 30x21mm

30x24mm, 31.5x18mm

31.5x24mm, 35x23mm

38mm, 46mm, 53mm

Extra Deep Caps

22x29mm, 25x29mm

25x33mm, 25x44mm

28x38mm, 28x44mm

29x35mm, 30x44mm

Special Sizes

30x50mm

30x55mm

28x60mm

  • Liner Options: EPE, Latex, Cork, Saranex, Tin Saran, Plastic plug, Non-refillable pourer, and Moulded.
  • Aesthetic Decoration: Multi-color Offset printing, Dry offset, Foiling, Top/Side Embossing, and Chamfering.

Sustainability: Every pilfer proof cap produced by Alutop is 100% recyclable, supporting your brand's green initiatives.