Paper Technology Journal - Voith

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chamber over the whole width of the machine
as well as the edge deckle adjustment
device inside the nozzle are no
longer required.
Good profiles
Pre-metering and levelling with the metering
element are thermally disengaged.
This guarantees stable operating conditions
and good profiles from the very beginning
and throughout operation.
Simple adjustment
Pre-metering and levelling with the
metering element are mechanically disengaged.
This avoids any complicated
adjustments during roll and metering
element change.
Field of application
Like using Speedsizer and Speedcoater
the whole range of film coating applications
can be covered. From low viscosity
starch solutions to pigment suspensions
and up to high viscosity coatings, all
state-of-the-art formulations can be metered
onto the rolls.
Starch
application
Pigmenting
Coating
Paper Machines
Max. penetration
Min. penetration
P&J
The Technology
Optimum web run
The paper industry needs optimum solutions
for its individual requirements.
Maximum coat weights or starch application
with minimum installation length are
“normal” requirements, to which is also
added the best runnability with greatest
flexibility.
The SpeedFlow permits all proven roll
allocation, but practice has shown that
two typical construction forms can cover
Coating weight
[g/m 2 ] per page
Fig. 1: SpeedFlow.
Fig. 2: Application principle.
Fig. 3: Field of film coating applications.
Fig. 4: Web run from top to bottom.
Solids
content [%]
33
Viscosity
Brookfield 100 [mPas]
0,15 - 4 5 - 18 10 - 60
Target: improved Strength characteristics
2 - 6 10 - 50 50 - 350
Target: improved Whiteness and Smothness
5 - 15 50 - 65 300 - 1600
Target: Best Coverage, Smoothness and Gloss
all applications with the greatest productivity.
Concept 1: For new paper machines or
rebuilds with sufficient space:
■ Inclined web run
■ Sheet run from top to bottom
■ Airturn, infrared
■ Air drying (when necessary).
Advantages:
■ Excellent sheet run
■ Short free draws
■ Best runnability.
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