Paper Technology International 2024 - Journal - Page 37
PAPERTECHNOLOGYINTERNATIONAL
Figure 3: Display of Pixact software –
Installed System.
The measurement software
•
Displays a live, microscope-quality view of the process
suspension
•
Displays real-time measurement data and time trends
of the selected parameters
•
Communicates with the factory DCS to transfer
measurement data and other information.
•
Has camera monitoring (temperature)
After a short time and a test installation during the ongoing
process, the customer was convinced and purchased two stock
monitoring systems.
The questions asked before trying the test installations were
all answered positively:
•
Can the measurement reproduce the laboratory values
from stock preparation?
•
Does the measurement detect problems at the PM at
an early stage?
•
Can early detection with automated optimisation be
based on this?
A few months after the purchase and installation of the two
systems the customer told us that with the help of the real-time
monitoring in the stock preparation the mill achieved:
•
Waste/Broke reduction
•
Optimisation of bleaching chemicals
•
Optimisation of energy use
•
Raw material evaluation/supplier check
•
Claim reduction
Next possible steps are an optimisation of the stock
preparation and the paper machine.
Tasowheel: Increase production reliability and minimise
losses:
Modernisation of the slice lip CD control at Swiss Quality
Paper AG
Paper production began at the Balsthal production site
in Switzerland as early as 1883. The factory has belonged to the
Indian Soin family since 2009 and is part of the internationally
active Saber Group. Swiss Quality Paper AG focuses on the
production of special papers for raw paper for adhesive tapes,
cigarette 昀椀lter papers and hygiene products.
The PM3, built in 1987 with a headbox rebuilt in 1996,
has a width of 308 cm. It runs at a machine speed of 300 to 900
m/min. Production is 23,000 tons per year.
Grammages are between 20
and 100 g/m2 for the production of raw/
backing papers for adhesive tapes in
various colors and shades, 昀椀ne paper
for cigarette 昀椀lters and hygiene papers.
The adjustment gears for the aperture,
which were now 20 years old in 2017,
were increasingly failing, resulting
in undesirable production losses in
the 5-digit range. When looking for a
solution, Swiss Quality Paper turned
to Nicole Buschmeier / KPNB as the
responsible representative of Tasowheel in the area. The 昀椀rst
conversation between the C&I specialists from Swiss Quality Paper
and Tasowheel took place in July 2017 at the Zellcheming Expo in
Frankfurt.
After exchanging details and an overview of the possible and
most sensible scope of delivery, increasingly frequent production
downtimes made it clear that there was a rising need for action.
During an on-site discussion at the paper factory on October
3rd, 2017, the fastest possible installation date was determined:
Christmas 2017.
During the 2017/2018 Christmas shutdown, the entire slice
lip actuators at the PM were replaced and a new actuator control
server was installed. This new equipment was integrated into the
existing quality control system.
The commissioning, scheduled for January 9, 2018, was
successful and the goals – above all production safety – were
achieved. The collaboration with Tasowheel as the original
manufacturer of the actuators also offers Swiss Quality Paper
security in the procurement of spare parts and overhaul of the
drives. The production management expected that the investment
would pay for itself within 12 months.
Figure 4: Swiss Quality Paper Headbox PM3.
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