High speed, high quality web product machines, with increased resolution requirements for Web Imaging Systems (WIS) to analyze smaller details of the product, set new standards for the performance of imaging system technology. Simultaneously, the latest improvements in imaging technology have given new opportunities to develop methods, which utilize the measurement data of the whole web area both for the product quality evaluation, and for the product manufacturing process monitoring and control.
Currently, in many cases the quality evaluation of the web product has been based on remote lab measurements or some online measurement results, which are based on only small portions of the web product area. Recently, ABB introduced new methods for analyzing very large numbers of interesting target regions of a product in real-time and covering the measurement of the whole product area. These new methods and derived measurements allow pulp and paper manufacturers to: (1) monitor the overall quality factors of a product online, (2) react immediately to improve the product manufacturing process, (3) evaluate the whole product quality, and (4) classify the manufactured product areas based on specific customer requirements. This means huge savings compared to cases where a partial measurement result is used for downgrading the product quality causing significant amounts of good quality product to be downgraded.
ABB presented a paper at TAPPI PaperCon 2016 describing ABB’s new real-time full web imaging methods and the interest was very positive with good discussion on how such technology can be applied to improve Pulp, Paper and Paperboard manufacturing process.