Doctoring affects machine runnability, paper and board quality, production costs, and production efficiency.
Runnability can be improved by optimizing doctoring parameters and blade materials. Cleaner rolls result in better end-product quality. The blades can be selected to meet customers shutdown schedule which will lead to fewer blade changes resulting in lower blade costs. The reduction of unplanned shutdowns and costly downtime periods can be avoided by reliable and trouble-free doctoring.
Valmet offers a unique selection of breakthrough doctoring technologies that improve mills’ doctoring processes, both technically and economically. Our customers witness up to EURO 1 million in annual savings, better runnability, efficient dewatering, longer blade lifetimes, and improved safety.
Our complete portfolio includes doctor blades, blade holders, and support accessories that ease and improve the handling, storing, and recycling of doctoring components, and enhance operator safety.
Our expertise ranges from material consultation to professional support and troubleshooting. Depending on process conditions versus blade behavior, we know which materials work best in any given requirement, application, or machine position.
And it isn't just the technology that stands out: We provide life cycle support for mills’ doctoring needs day and night, seven days a week. Our global network ensures that no customer’s mill is left alone with its doctoring process needs.
Valmet has a comprehensive portfolio of accessories to ease and improve blade handling, storing and maintenance. All the supporting accessories have been developed to secure operators’ safety and working ergonomics.
Corex’s (earlier Corenso) board mill in Pori, Finland is developing its production and equipment continuously. In 2019, one of the development projects was improving doctoring on the dryer section to meet the quality requirements of production.
After a previous PM6 rebuild project in 2012, IKPP Perawang Mill was looking for opportunities for further improvements in the machine runnability and performance. Cooperation with Valmet started and the desired improvements were found through a comprehensive review of the doctoring process.