Illustration printing

Checklist circular knife

Solution

 

1. Check stability of the knife holder

2. Check concentricity, max. 0,03 mm (axial concentricity should be max. 0,01 mm)

3. Check the cutting point – the anvil should lift the paper web max. 1,0 mm

4. Check cant angle, if necessary, service the knife holder

5. overlap max. 1,0 mm

6. Check overspeed – optimally the upper knife is 0,5 m/s faster than the paper web

7. Surface quality of the knife should be at least Ra 0,4 µm

8. Check lateral contact pressure, it should be kept to a minimum

9. Optimal cutting angle on the bottom knife is 1-3°

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