INSPECTION 24 PETplanet Insider Vol. 24 No. 10/23 www.petpla.net Integrated leakage testing system Flexblow addresses the challenges of traditional leak testing methods by integrating the process directly into the stretch blow moulding machine. This approach is not only claimed to eliminate the need for extra space as the module neatly fits in the SBM machine frame, but also to enhance overall efficiency. Utilising pressure leak testing tools, the all-in-one solution identifies packaging defects that may elude visual inspections, says Flexblow. Containers of various shapes and neck sizes can be processed as well as ultra-lightweight containers which are handled by an internal grip and reduced top-load. Beyond its structural benefits, the development excels at identifying a spectrum of defects, from distorted neck geometry to cracks and plastic curling. The system’s In the realm of bottle manufacturing, the pursuit of impeccable quality remains a constant challenge. Defective preforms or damage to preforms caused dur ing transportation, handling, and packaging processes can result in leakage-causing container defects. Conventional solutions in the market often involve separate pressure testing equipment, typically positioned between the container manufacturing equipment and the downstream production line. This approach demands additional space, with equipment size varying based on inspection speed, necessitating careful consideration of plant premises. Flexblow offers a solution that integrates leakage testing in the blowing equipment. prowess extends to detecting holes within the bottle’s geometry, regardless of their location, through meticulous pressure monitoring. In addition, it assesses packaging resistance to compressive force, simulating pressure from above on the conveyor during leakage tests. The use of pressurised air evaluates the overall integrity of the bottle geometry. The principle of operation & functional components The two-carriage ruler brings the bottles to the required position, followed by bellows grippers descending to activate and secure the bottles from the inside. Subsequently, set pressure is applied through the bellows grippers’ hole, with any observed pressure drop signalling a defective bottle. The robust frame of the system serves as the backbone, securely holding valves and sensors responsible for pressurising and measuring air pressure. A pneumatic cylinder, connected through a fast connection, manoeuvres the bellows gripper holder into the precise bottle holding/ measuring position. The bottle bottom cooler dispenses cold air, intended to ensure optimal PET crystallisation and to provide stability during measurements. Augmenting the testing process, an air receiver system supplies air to the valves, elevating the system’s overall efficacy. www.fl exblow.com
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