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Siân Yates

Siân Yates

15 October 2025

CSI launches Asepti-Lok 47 closure solution for aseptic beverage packaging

CSI launches Asepti-Lok 47 closure solution for aseptic beverage packaging

Closure Systems International (CSI) has introduced the Asepti-Lok 47 38mm closure, designed to enhance the safety and efficiency of aseptically filled beverage packaging.


Asepti-Lok 47 is specifically designed for PET non-returnable bottles with the 1874 finish, making it suitable for various beverages, including juices, nectars, sports drinks and liquid dairy products.


Its lightweight, one-piece, linerless construction incorporates advanced sealing technology to help ensure product integrity.


Key features include:


Sealing performance: The closure features a three-point seal design that includes outside, top, and inside seals, aimed at preventing leakage and maintaining product quality. It weighs just 2.9g, which may contribute to material efficiency in production.


Operational efficiency: CSI claims that the lube-free design can enhance bottling line efficiency and reduce maintenance needs. The closure is compatible with both wet and dry sterilisation methods, addressing the requirements for aseptic filling.


Consumer handling: The design includes a tamper-evident band that provides a level of security for consumers, ensuring the product has not been compromised. The closure is engineered for easy handling, with consistent opening torques reported to improve user experience.


“The Asepti-Lok 47 38mm closure demonstrates CSI’s commitment to delivering innovative closure solutions that meet the highest standards of aseptic beverage packaging,” Clint Rush, global director at CSI, commented. “This closure ensures superior product integrity while driving operational efficiency for our customers.”

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