Paper Technology Journal 19 - Voith

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Automation
On the basis of a uniform and constant
operating and engineering interface for
the machine controls, the process and
quality control system, Voith Paper
Automation supplied the entire automation
for the Maxau PM 6 production line.
The OnQ quality control technology is
matched to the production process in
such a way that short control loops and
thus fast response times on changes in
the quality parameters are possible. Besides
the OnQ quality measuring frames,
numerous CD and MD controls are used
in production. Thus an SC paper is produced
on PM 6 that is perfectly suited
to further processing in the rotogravure
printing process.
The automation concept is completed by
the OnView Information System with machine
and process status monitoring as
well as a sheet break analysis and sheet
inspection system. With this, all product,
process and machine data can be collected,
analyzed and prepared. In addition,
the VariTop winder has been completely
Technical specifications of PM 6
Wire width 8,100 mm
Untrimmed web width 7,300 mm
Drive speed 1,800 m/min
Design speed
Planned annual production
2,000 m/min
Phase 1
Planned annual production
260,000 t
Phase 2 280,000 t
Basis weight 45-56 g/m2 Quality SC-B (rotogravure)
Start of production September 2004
19/05
renewed with the latest control and visualization
technology meeting after the
rebuild the demands made on winders of
the new generation.
The result
On September 15, Voith Paper again proved
with the production of the first paper roll
on the new PM 6 their professionalism in
the processing of such complex projects.
The first printing tests turned out to be
positive and allow us to expect an optimal
conclusion to the project.
The production line of PM 6 includes the
following modules of the One Platform
Concept:
● ModuleJet headbox
● DuoFormer TQv
● DuoCentri-NipcoFlex press with 4th press
● TopDuoRun dryer section
● Janus calender
● Sirius reel
● VariTop winder (rebuild)
● Complete engineering for PM and
peripherals as well as almost complete
delivery
● Complete engineering and delivery of
the electrical control and power section
● Increasing the capacity of the DIP
stock production, including disc filter
rebuild work.
Stock preparation
As deinked recovered paper is also used
as the main furnish besides bleached
groundwood and chemical pulp, the
capacity of the existing recovered paper
preparation system also had to be
expanded because of the significant increase
in the paper machine capacity.
The production rates have been continually
raised over the past few years and all
three DIP systems have been operating
significantly beyond their original layout
specifications. The additional capacity
increase by about 20%, spread over two
DIP lines, therefore presented a great
challenge.
First, a detailed project study and balance
of the actual condition of the two selected
DIP lines 1 and 3 were carried out.
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