Contaminated roll surfaces, paper wads, heat and moisture – a real challenge for the polyester (PET) monofilaments of a fabric in the dryer section. SynStron is a new class of PET, developed by Voith for higher resistance to damage and abrasion under demanding running conditions.
A record life of 446 days has been achieved with SynStron monofilaments in a PrintTech Q2 fabric on the Third Top DuoRun of a 1,300 m/min coating base machine. This is a 30% improvement over the standard PET fabrics that are normally removed after 12 months at a planned shut. Seam strength was still high at 72% of its original value. Effective sheet control throughout the fabric life has been helped by the contaminant release additive of SynStron achieving 76% fabric permeability retention.
SynStron monofilaments have higher strength and abrasion resistance; fibrillation resistance to reduce the effects of degradation and a contaminant release additive. These advantages give a better potential to improve dryer fabric performance.
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