Doctor blade optimization in paper mills: How Valmet Doctoring Solutions reduced costs by 18%

Overview

A large corrugated medium board mill in the U.S. South partnered with the Valmet Doctoring Solutions team to improve operational efficiency, reduce consumable costs, and optimize doctor blade performance.

Through a partnership in the Valmet DoctorCare program, the mill streamlined blade configurations, identified upgrade opportunities, and achieved an 18% reduction in doctor blade spend within one year—while improving overall reliability.

Customer challenge: Complex blade usage and rising costs

In corrugated medium production, doctor blades play a critical role in cleaning rolls and maintaining sheet quality. However, inconsistent blade selection and aging equipment can quickly lead to inefficiencies.

At this mill, key challenges included:

• Overly complex blade configurations across machines
• Lack of standardization, leading to inconsistent performance
• Rising consumable costs with limited visibility into usage
• Missed opportunities for equipment upgrades
• Inefficient maintenance practices impacting blade life

Without a structured approach, the mill struggled to optimize blade performance or control spending.

Solution: Implement the Valmet DoctorCare program

A comprehensive DoctorCare program was deployed to bring consistency, visibility, and continuous improvement to the mill’s doctoring systems.

Core elements of the approach

• Captive service model
  On-site expertise ensured consistent monitoring, proactive recommendations, and faster issue resolution.
• Blade standardization and consolidation
  The team reviewed all blade configurations and reduced unnecessary variation, simplifying inventory and improving consistency.
• Performance tracking and analysis
  Regular reviews of blade wear, performance, and usage patterns enabled data-driven optimization.
• Identification of upgrade opportunities
  Equipment requiring repair, replacement, or modernization was flagged for improvement.
• Continuous improvement mindset
  The program maintained ongoing engagement with mill teams to refine processes over time.

Results: Measurable savings and operational improvements

Within one year, the DoctorCare program delivered significant and measurable results:

Cost reduction

• 18% reduction in doctor blade spend
• Lower inventory complexity and waste
• Improved cost predictability

Operational efficiency

• Streamlined blade configurations across the mill
• Improved blade performance and consistency
• Reduced downtime related to blade issues

Asset optimization

• Identification of critical equipment upgrades
• Enhanced maintenance practices
• Improved long-term reliability of doctoring systems

Additional value: Enabling continuous improvement

Beyond immediate cost savings, the program created a foundation for ongoing optimization:

• Generated visibility into small capital projects
• Identified spare parts opportunities
• Strengthened collaboration between mill teams and technical specialists

This approach ensured the mill could continuously improve performance rather than relying on reactive maintenance.

Why doctor blade optimization matters

For paper mills producing corrugated medium in the 45–69 lb. grade range, doctoring performance has a direct impact on:

• Sheet quality
• Machine cleanliness
• Roll life and maintenance costs
• Overall operating efficiency

A structured program like DoctorCare helps mills move from reactive blade replacement to proactive performance optimization.

A scalable model for cost control and efficiency

This case demonstrates how a focused, service-driven approach to doctor blade management can drive meaningful results in a short timeframe.

For paper mills across North America, especially in regions with high production demands, DoctorCare programs provide a proven path to:

• Reduce consumable costs
• Improve operational consistency
• Identify hidden efficiency opportunities