In 1997-1998 Testori supplied the first set of bags in D 585 SB for UNIT 4, 5 & 6 at Majuba Plant in South Africa; after 24000 service hours some samples were tested at Testori laboratory showing excellent conditions and very regular cage marks and no evidence of dust penetration inside the felt. In spite of the two-shifting operation all mechanical tests, air permability and Mullen burst measurements showed compliance with Eskom requirements. Nevertheless, following more stringent requirements Testori developed a more performing media; the innovative concept lies on exploiting the filtering properties of multilobal fibres and to process the needlefelt with a unique heat setting: DX 585 SB Superior is a PAN-PIC/PAN unshrinkable felt with multilobal P84® 1,7 dtex needled on the dust-side and the base felt made by Ricem® High Tenacity 2,2 dtex fiber. Due to the finishing our bags did not shrink during operation thus allowing Majuba a considerable saving in time and costs; moreover, the multilobal cross section increases the filtration surface thus permitting to retain finer particles and to maintain a lower pressure drop as requested.

Tessuto rivestito da una speciale membrana da impiegare in alternativa ai tradizionali tessuti destinati alla separazione di particelle particolarmente fini.
Il tessuto è sottoposto a schiumatura con polimeri reticolati e sostanze microporose che creano una membrana tridimensionale con le seguenti caratteristiche:

Altissima efficenza in fase di filtrazione
Ottimo distacco del cake
Porosità uniforme sull’intera superficie del tessuto
Limitato rischio di intasamento
Riduzione della permeabilità senza stress meccanico del tessuto

We have upgraded our range of antistatic needlefelts; an answer to the demands of OEMs and end users to the new law on explosion risks. The use of fine metallic fibres in the filter media has resulted in improved conductivity and antistatic property durability. Testori certifies to the Directive 94/9/EC – Atex.

New range of needlefelts designed for high efficiency values; made from microfibres, bonded with microporous membranes or with microporous coatings. The pore dimensions (measured with the Bubble Point test) are much smaller. In a microfelt, permeability and thickness diminish in favour of higher efficiency.
Microfibres available for Microfelt: polyester, PPS, P84®, Nomex®, PTFE and Tetratex membranes.
This high value fibre meets the demands of a top-end market range.

Our engineers will be pleased to discuss in further detail.