Symptom
◆ Hairs or strings.
Possible cause
Blade speed is too low.
The blade is too thick.
The blade is wrong for
the application.
Material is building up
on the blade and wiping
off on the cut site.
There are imperfections
on the blade.
A hole or slot in the blade
cut path is causing a
‘cheese grater’ effect.
The extrudate is too cold.
Solution
Increase the blade speed or
decrease the blade cut path
area (blade width).
Excessive blade thickness can
cause frictional heat. Use a
thinner blade.
Change angle of the blade
attack or the blade style to
decrease the cut path area.
Use blade lubrication (water,
etc.) or change lubricants. See
Appendix D. Consider a blade
wiping system.
The cutting edge should not
have grind marks, burrs or
other imperfections. Check the
blade and replace if necessary.
Change to a different blade
design. See Appendix B.
If the extrudate is too cold, it
can fracture during cutting.
Raise the extrudate's tempera-
ture.
PRODUCT QUALITY
PROBLEMS
C
ONTINUED
UGE048/1103 CSC Combination Puller/Cutter
TROUBLESHOOTING 6-11
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