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Paper manufacturers across Europe have announced price adjustments in recent months, reflecting continued cost pressure across the paper supply chain.
In October 2026, Sappi Europe announced an €89-per-tonne increase across its paperboard portfolio, effective for new orders and deliveries from November 1. Burgo Group and Koehler Paper have also reported price increases for selected paper grades.
For paper mills, printing companies, and paper converters, higher raw material costs make production efficiency increasingly important. When every tonne of paper costs more, avoidable waste during processing becomes more expensive.
One often-overlooked source of waste is poor cutting quality. Rough edges, dimensional deviations, and uneven sheets can lead to additional trimming, rework, and material loss.
In roll-to-sheet converting, cutting quality affects both the finished product and subsequent production processes.
Ideally, sheets should have clean, consistent edges, accurate dimensions, and good squareness. However, some production lines experience problems such as:
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Rough or uneven cutting edges
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Excessive paper fibers and burrs
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Inconsistent sheet dimensions
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Diagonal deviations and out-of-square sheets
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Uneven stacks requiring additional handling
These defects may appear minor on individual sheets, but repeated problems during continuous production can reduce usable output and create extra work for operators.
For factories supplying printing and packaging businesses, consistent sheet quality is essential for smooth downstream processing.
When the initial cutting process cannot meet the required dimensions or edge quality, additional trimming may be necessary.
This creates several production challenges.
Material waste: Extra trimming removes usable paper from the finished sheets, reducing the amount of product obtained from the original parent roll.
Additional processing time: Recutting, inspection, and material handling extend production time and may delay subsequent operations.
More manual work: Operators may need to separate defective sheets, inspect edges, adjust equipment, and handle materials again.
Downstream quality problems: Inconsistent dimensions and sheet squareness can affect paper feeding, positioning, and registration during printing, laminating, and die cutting.
The actual impact depends on the paper grade and finished product requirements. However, when secondary trimming becomes a recurring operation, it is worth examining the original cutting process.
Cutting quality is determined by the interaction of the knife structure, mechanical stability, and operating conditions.
Knife configuration
A conventional Single Rotary Paper Sheeter uses a rotating upper knife against a fixed lower knife. A Double-Rotary Paper Sheeter uses synchronized upper and lower rotary knives, creating a shearing action during cutting.
This difference in cutting principle is particularly relevant when processing heavier paper grades and paperboard.
Mechanical stability
Vibration, mechanical clearance, worn bearings, and insufficient structural rigidity can affect knife positioning. At higher speeds, these problems may result in inconsistent cutting performance.
Paper properties and operating conditions
Paper weight, thickness, coating, moisture, knife condition, cutting clearance, and production speed all influence the final result. Settings suitable for one paper grade may not work equally well for another.
Therefore, improving cutting quality requires more than simply replacing the knife. The complete cutting system must operate in a stable and coordinated manner.
For converters processing heavier paper, kraft paper, and paperboard, a CHM Double-Rotary Paper Sheeter is worth considering when cutting consistency and edge quality are important.
The machine uses synchronized upper and lower rotary knives. Both knives rotate in coordination during cutting, providing a controlled shearing action.
This configuration offers several advantages:
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Synchronized cutting: Coordinated knife movement helps maintain consistent cutting performance during continuous production.
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Suitable for demanding materials: The Double-Rotary structure is designed for applications involving heavier paper grades and paperboard, depending on the machine model and configuration.
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Stable production: Mechanical rigidity, transmission accuracy, and synchronized control all contribute to consistent cutting results.
By combining these elements, CHM Double-Rotary Paper Sheeters are designed to improve cutting consistency and help reduce the need for secondary trimming under suitable production conditions.
Actual performance should be evaluated through material testing and production trials.
Manufacturers cannot always control raw material prices, but they can examine how much paper is lost during production.
Poor cutting edges, dimensional deviations, and repeated secondary trimming can all reduce usable output and increase processing requirements.
With its synchronized upper and lower rotary knife structure, the CHM Double-Rotary Paper Sheeter offers a solution for manufacturers seeking more consistent cutting performance in demanding paper and paperboard applications.
Better cutting quality is not just about producing a cleaner edge. It is about reducing avoidable processing, making better use of raw materials, and protecting production efficiency.
Contact CHM Machinery to discuss your paper grades, cutting requirements, and suitable Double-Rotary Paper Sheeter solutions.
