18 HEIMBACH


New opportunities in tissue production


Press felts that unite the benefits of non-woven and multi-axis technologies have been launched by Heimbach to provide tailor-made designs. PPL reports


managers were sure: it had the potential to usher in a new era in press felt technology. “We promised paper manufacturers that we would develop a press felt that creates completely new opportunities,” remembers Jochen Pirig, strategic product manager at Heimbach. This has been accomplished,


E


as Atrojet is the first felt offered worldwide that unites the advantages of Heimbach’s most significant press felt design groups: the non-woven design group Atrocross and the multi-


ven at the beginning of Atrojet’s development, Heimbach product


axial design group Atromaxx who both belong to the modern felt designs, so called advanced technology bases (ATB). Non-woven Atrocross and multi-axial Atromaxx press felts are offering comprehensive product ranges in their individual design group to meet the requirements of press felt application. Each design has its distinct


advantages: such as short break in time and high nip dewatering capacity of Atrocross or the great flexibility of base weave combinations of Atromaxx to meet individual and particular requirements which is important for customised well-engineered press felt application.


In addition to these two modern press-felt design groups the classically woven, respectively laminated base weave felt designs, belong to the Heimbach assortment too. Even though the existing


product spectrum is sophisticated, Heimbach keeps on improving its existing product lines and developing new products. Atrojet is one of the latest


developments which is an innovative press felt design combining the advantages of multi-axial and non-woven technology. With the multi-axial non-


woven technology, the product managers can meet the


particular requirements of press felt positions even better. The specific quality of Atrojet is the structure of the base inside, which is, facing the paper side, and consists of a unique non- woven layer. That layer of yarns is made of machine direction yarns only, which results in great strength, evenness and smoothness of the base facing the paper side. The machine direction (MD) yarn structure is arranged in diagonal direction which is the characteristic multi- axial angle improving collapse resistance by increasing crossing points of all yarns. Broad flexibility is given by


the fact that the non-woven paper side layer can consist of


Pulp Paper & Logistics


Figure 1: Increased number of crossing point of all yarns is the leading feature of multiaxial felt technology


September/October 2019


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