Paper Technology International 2020 - Journal - Page 53
PAPERTECHNOLOGYINTERNATIONAL
Atronet.P –
highly durable and long-lasting It was clear from the very
beginning to our designers: conventionally woven press felts are
sub-optimal for the requirements of pulp applications. A better
way was required. Searched for, discovered. The climax of the
development work was the new Atronet.P design.
The multi-axial press felt concept impresses with outstanding
compaction resistance and maximum dimensional stability. These
qualities, of course, are typical of Heimbach’s multi-axial felts. The
base modules are set at different angles and effectively prevent the
structure from collapsing.
This in turn guarantees that the void volume is maintained
to a high degree which leads to excellent dewatering results over
long lifetimes. It is not without reason that New-Tech fabrics are the
product of choice for many customers in the packaging sector.
In addition, Atronet.P is equipped with a compression
layer within the felt. Thanks to this, huge volumes of water can
be processed in a controlled manner throughout felt lifetime. This
compression layer also helps improve fibre anchorage which in turn
improves wear resistance.
Atronet.P / Atronet.P.Connect
stands out compared to conventional solutions:
Multi-axial carrier modules
•
•
Highly effective maintenance of void volume
Dimensional stability retained under extremely
demanding conditions (high temperatures in the press
section)
Patented compression layer
•
•
•
Absorption of higher volumes of water
Controlled dewatering throughout felt lifetime
High wear resistance
Seam
•
ONE single, strong seam for easier felt installation
An extract from our references
Figure 2: Schematic of a modern pulp dewatering machine.
Comfortable with a single seam
Press felts on pulp machines are real heavyweights, and consequently have two seams. At least, that was the standard up to now.
Atronet.P. Connect fulfils the wishes of paper makers in this respect too: The felt is equipped with just one, extremely strong, seam. This
meets all safety requirements and also enables rapid felt installation.
Press felts for pulp dewatering
The traditional way
Double seam felt: two conventional woven, double-layer
base weaves with two seams
• High void volume
• High seam strength
• Heavy felt weight (cost)
• Difficult installation (two seams)
• Sensitive to compaction and shrinkage
• Risk of loss of batt
The modern way
Atronet.P.Connect: Multi-axial seam felt with compression
layer and SINGLE seam
•
High void volume
•
High seam strength
•
Moderate felt weight
•
Easy installation (only one seam)
•
Practically incompressible
•
Insensitive to shrinkage
•
First class wear resistance
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Packaging – quo vadis? Ramon Rohe, Omya International AG - Paper Technology International 2020 - Journal - Page 98
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