Paper knives
Circular Upper Knives / Circular Lower Knives
In order to ensure a smooth operation of circular upper knives and lower knives, they are manufactured absolutely to the knives' truth of rotation and flatness. Specially developed abrasives allow to obtain very low surface finishes for blades of upper knives, which also helps to prevent the production of dust. Circular upper knives and circular lower knives are available in all common qualities, from tool steel through to carbide metal.
The special grinding processes are tailored to the material being cut and can be carried out in the following ways:
- Swing-frame grinding, suitable for standard knives and HSS knives
- Lapping, suitable for all hard metals
- Abrasive belt grinding (micro-finish), provides dust-free cutting and maximum service life
- Hollow grinding (microtome cutting), for cutting high-volume materials
Sheeter Knives
On cut-to-length and slitting lines which work with stationary and rotary knives state-of-the-art grinding techniques ensure the required plane parallelism and obtain a low surface roughness. This minimizes dusting and improves a smooth workflow. Sheeter knives made of tool steel, high-speed steel (HSS), tungsten carbide and PM steel can be manufactured up to lengths of 4,500 mm.
The special grinding processes are tailored to the material being cut and can be carried out in the following ways:
- Swing-frame grinding, suitable for standard knives and HSS knives
- Lapping, suitable for all hard metals
- Abrasive belt grinding (micro-finish), provides dust-free cutting and maximum service life
- Hollow grinding (microtome cutting), for cutting high-volume materials