US-based packaging company Closure Systems International (CSI) has unveiled the Omni mini XP 26mm closure.
The newly developed closure is designed for carbonated cold-fill and ambient-fill beverage applications.
The launch adds to the company’s range of sustainable packaging solutions for PET non-returnable bottles.
It weighs 1.8g and is more than 10% lighter than standard 1881 one-piece carbonated soft drinks' closures.
Paired with a 26/22 GME 30.40 bottle finish weighing 2.7g, the system achieves a more-than-25% reduction in bottle finish weight compared to older models, lowering material consumption and carbon emissions.
The Omni mini XP 26mm offers consistent performance across bottling lines, providing best-in-class CO₂ retention of up to 4.7 volumes,
It is in line with or surpassing international customer standards across diverse distribution and handling environments.
The one-piece high-density polyethylene closure, made entirely from recyclable polyethylene resin, is compatible with 26/22 GME 30.40 finishes and can be used on bottles ranging from 250ml to 3L.
It is available in various knurl patterns [patterns of ridges to improve grip] — 24, 24/120, 60 and 120 — offering design flexibility.
The product is supported by its global network of technical service experts to enable market adoption and ensure operational reliability.
CSI global director Clint Rush stated: “The Omni mini XP 26mm represents CSI’s commitment to advancing ultra-lightweight, sustainable closures without compromising performance.
“By reducing both closure and bottle finish weight while maintaining industry-leading CO₂ retention and line efficiency, this innovation supports our customers’ sustainability goals and enhances their operational competitiveness.”
In October 2025, CSI introduced the Asepti-Lok 47 38mm closure, designed for aseptically filled beverages.
The closure was intended for PET non-returnable bottles with the 1874 finish, featuring a lightweight, one-piece, linerless construction with advanced sealing technology.
