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Winding and Reeling
Roll quality is critical to ensure problem free
operation. If the wound-in-tension is not correct the
roll can have crepe wrinkles or bursts which will cause breaks in the
pressroom. These problems can be resolved by measuring the tension,
nip load, and torque differential (TNT) of the winding process along
with the density profile. Since reeling on a paper machine is another
winding process, problems here are resolved in a similar manner. In
this case, special attention must be paid to the primary arm lowering
and the transfer of the reel to the secondary arms.
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Figure 1 Density profile
with primary arm loading increased by 40%
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Figure 2 The density profiles after the
bumpless transfer was installed. Note the repetitive downward density
spike at 1.75" jacket.
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Figure 3 The density profile after the
bumpless transfer was optimized
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Spectrum Technologies works closely with LSZ PaperTech
to supply consulting services in winding and reeling. For more
information contact LSZ PaperTech.
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