User guide

6-10 l Troubleshooting
Product Quality Problems
Symptom
Annular rings present on
the extrudate.
Burrs at cut site.
Possible Cause
The belt puller is too close to the
cutter.
The bushings do not provide enough
support during cutting.
The bushing gap is too wide.
The blade speed is too low.
The blade is too thick.
Solution
If the extrudate is interrupted
(stopped during processing), annular
rings can develop, especially on a
thin-walled product. Slightly
increase the distance between the
puller and the cutter, and test the
product until the distance is correct.
Change bushing design to make
more supportive.
Check that bushing gap is 0.001-
0.003 in. larger than blade. Adjust if
necessary.
Increase blade speed or decrease the
cut path area.
Use a thinner blade or add heat to
extrudate.