Pulp Paper & Logistics


HEIMBACH 21


document time after time the great successes of this technology.


Non-woven press felts Benefits and gains • Significantly faster start-up • Outstanding nip dewatering (best in class) • Higher dryness • Effective self-cleaning • Possible high savings: Vacuum energy, steam


Case Study 1 Fully saturated after just one hour On a 7.15-metre wide paper machine producing LWC papers the average start-up time with a competitor’s conventional felt in the second press pick up was almost 10 days. Introducing Atrocross.F Connect with the Turbo start-up component Fast Forward from Heimbach led to a dramatically-reduced start-up time. After only one hour, the felt was completely saturated and normal production speed was attained.


Multiaxial technology The market introduction of multiaxial felts began at the start of the new millennium.


Atromaxx – viewed through microscope


Since that time papermakers have increasingly been placing their trust in this future leading felt construction. Multiaxial technology is also, in fact, a development from Heimbach. The modular construction


results in a high universality. There are multiaxial felt types available to suit every paper grade. Compared to conventional press felts, multiaxial designs


are much less susceptible to compaction and contamination due to their diagonal structure. It is also possible to fine tune these felt types, using the appropriate combination of modules, to the specific requirements of the application. Multiaxial felts have proved


to be particularly successful producing packaging papers. On fast, modern machines, dry


contents of 54-57 per cent are now the norm. In many instances, the use of Atromaxx felts has been a factor in these peak values.


Multiaxial press felts Benefits and gains • Allows customised solutions • Various dewatering concepts possible (nip or Uhle box dewatering)


• Fast start-ups with higher dewatering and longer lifetimes • Excellent runnability


Case Study 2 Savings: €200,000... per year The multiaxial principle, by the way, works equally well in the production of graphic papers. This is clearly demonstrated by a case study involving a paper machine producing copy papers. Twenty per cent higher


Atromaxx – the multiaxial module concept


drainage values: this was the result achieved by a customer on the first application of an


January/February 2020 4


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