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Winding and Reeling
Roll quality is critical to ensure problem free operation in
the pressroom. 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 with 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 Inc. to
supply consulting services in winding and reeling.
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