MOULD MAKING 17 PETplanet Insider Vol. 26 mised cooling circuits to achieve more efficient heat removal. This precise thermal control ensures uniform and rapid cooling, substantially reducing internal stress variations and enhancing the bottle’s resistance to stress cracking - a crucial factor for maintaining the structural integrity of carbonated beverage containers. Nevertheless, innovations inherently come with new technical challenges. The intricate geometry associated with the threedimensional partition line makes some areas of the mould thinner than conventional designs. Moldintec proactively addresses this concern by employing carefully calculated curvature radii and using specialised protective fixtures specifically developed for mould storage and handling outside production machines. These measures protect the integrity and durability of the moulds, underscoring Moldintec’s dedication to overcoming challenges through continuous innovation and technical know-how. In addition to operational and mechanical advantages, KnetMold technology also improves the aesthetic quality of PET bottles. The innovative three-dimensional partition line creates smoother transitions and less visible seam lines, enhancing the finished product’s visual appeal and perceived value - an essential factor for brand positioning and consumer satisfaction. Ongoing R&D to simplify mould mechanics Latest developments also point to a potential simplification of the mechanical system. Moldintec is now considering eliminating the third movement - the vertical displacement of the base subassembly - since the mould can open even when the base remains stationary. The team is currently working on methods to separate the base insert and the bottle without losing alignment with the mould centre line. This could represent another step forward in reducing mechanical complexity, wear, and cycle time. KnetMold technology is claimed to offer benefits such as decreased energy consumption, enhanced mechanical durability, and consistently high-quality output. To further validate its approach, Moldintec has applied for patent protection (patent pending) for the KnetMold technology. The company continues rigorous industrial validation programs, inviting potential collaborators and interested parties to engage directly with Moldintec’s technical experts. www.moldintec.com
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