Complete Bottling Line

Krones Contifeed Preform Feeder


The Krones Contifeed preform feeder is designed for the precise and efficient feeding of PET preforms into the blow molding machine. It operates using a roller sorter system that gently handles preforms of various sizes, ensuring they are properly aligned before entering the blow molder. The Contifeed system offers quick and infinitely variable adjustments, allowing it to accommodate different preform types and sizes with minimal manual intervention. The system is available in three different lengths to match the output of the blow molding machine and includes options for automatic adjustment, making it highly flexible and adaptable to different production requirements. The design also includes features like automatic troubleshooting and easy access for maintenance, ensuring high operational efficiency​.

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Krones Preform Check Inspector


The Krones Preform Check Inspector is a sophisticated, inline inspection system designed to ensure the quality and integrity of PET preforms before they enter the blow molding process. Recognizing that the quality of the final bottle is heavily dependent on the condition of the preform, this system plays a critical role in maintaining high production standards and reducing waste in bottling operations.


The Preform Check Inspector utilizes advanced vision technology, incorporating high-resolution cameras and specialized lighting to conduct a comprehensive analysis of each preform. As preforms pass through the inspection station, they are subjected to multiple checks that assess various quality parameters. These include detecting surface defects such as scratches, dents, or contaminants, as well as identifying dimensional inaccuracies like ovality or variations in wall thickness.


One of the key features of the Preform Check Inspector is its ability to perform 360-degree inspections. This is achieved by rotating each preform in front of stationary cameras, allowing for a complete examination of the entire surface area. This comprehensive approach ensures that even minute defects, which could compromise the integrity of the final bottle, are reliably detected.


The system is also equipped with specialized software algorithms that analyze the captured images in real-time. These algorithms are calibrated to distinguish between acceptable variations and actual defects, minimizing false rejects and ensuring that only preforms that truly fail to meet quality standards are removed from the production line. This precision contributes to optimal material utilization and cost efficiency.


Integration with the overall production line is seamless, as the Preform Check Inspector can communicate with upstream and downstream equipment to synchronize operations. In the event of detecting a defective preform, the system can trigger reject mechanisms to remove the faulty item without interrupting the flow of production. Additionally, the system’s data logging capabilities allow for tracking defect rates and identifying patterns, which can be invaluable for quality control and process improvement initiatives.