Aluminum-Plastic Closure GPI 28 Exclusive, Silver — Screw Closure

The Aluminum-Plastic Closure GPI 28 Exclusive, Silver is a premium screw closure designed for spirit bottles; it combines a solid anodised Aluminium Cap with an internal plastic liner for reliable seating and a refined shelf presence.

• GPI 28 Exclusive silver anodised aluminium cap
• Cross knurling for strong manual grip
• Designed for Spirit Bottles with GPI 28 finish
• Hand-attachable, fast application for small batches
• Compatible with shrink sleeves for first-open security

Premium Look and Practical Grip

The Aluminium Cap features an anodised silver finish that resists abrasion and preserves a high-end appearance over time. A defined Cross Knurling on the sidewall increases tactile grip, which improves handling during manual capping and elevates perceived product quality at the POS. This combination of weight, finish and texture is aimed at enhancing brand positioning in the premium and craft Spirits segment while remaining robust for repeated handling.

Compatibility and Intended Use

Built for GPI 28 (28‑400) neck finishes, the closure fits Bottles with a matching Continuous Thread profile; the cap’s outer diameter is approximately 35 mm with a height near 20 mm. The Aluminum-Plastic Closure GPI 28 Exclusive, Silver is specified as a Spirit closure and is not intended for Carbonated Beverages. Commercial Fillers will appreciate that VPE Staffels are tailored to small runs and larger orders, with pallet quantities available for scale operations.

Fast Manual Application and Process Notes

Assembly is optimized for hand application: no special tooling is required and cycle time is measured in seconds per Bottle for small series. For reproducible results on production lines, torque tools are optionally employed to ensure consistency; always verify process settings against the specific Bottle and liner combination. The closure does not incorporate an integrated first-open band; an external shrink sleeve can be applied for an effective first-open solution.

Material Properties and Compliance

The product combines a metallic outer cap with an internal thermoplastic insert; the anodised Aluminium provides form stability and visual durability while the liner interfaces with the Bottle Land to create the seal. Etivera provides food contact compliance documentation for the GPI 28 variants in the range; fillers are responsible for confirming suitability with their formulation and process parameters before use.

Recycling and Handling Considerations

Because the closure uses mixed materials (Aluminium + Plastic), local sorting rules vary; many regions require separate handling of metal components. The mixed-material construction delivers a premium result but may affect post-consumer sorting—brands should advise customers per regional guidance. For branded or limited-edition releases the Aluminum Cap pairs well with coordinated shrink sleeves and presentation packs.

Request a sample pack or technical sheet from Etivera to evaluate the closure on your Bottle finish and production line.

Core Features

Anodised Aluminium Outer Cap

The anodised silver outer shell provides enhanced scratch resistance and a consistent decorative surface that reads as premium on shelf. This metallic finish supports brand positioning for limited editions and gift sets while maintaining dimensional stability during handling and display.

Cross Knurling for Improved Grip

A prominent cross-knurl pattern increases manual torque transfer and makes hand-tightening more consistent. The improved grip reduces slippage during capping and sharpening the tactile opening experience for the end consumer, reinforcing perceived quality.

GPI 28 Compatibility and Fit

Engineered for the GPI 28 (28‑400) neck finish, the closure aligns with industry-standard Continuous Thread Bottles from major glass suppliers. It is suitable for round spirit Bottles like the Etivera OSLA, VIVA and BEGA familiy variants when the finish matches GPI 28‑400.

Hand Application and Pack Options

Supplied in small VPEs (10 per pack) and available in commercial Staffels for larger volumes, the closure is ideal for Craft Distilleries and co-packers who require low capital outlay. Hand-attachable design keeps Rüstkosten low while allowing an upgrade path to larger production runs.