Forming fabric design definition and selection: the means to machine and fabric efficiency

The definition and selection of your forming fabric ic design could mean th e difference between success and failure in improving machine and fibre eff iciency. By defining the too drainage surface characteristics of your curre nt successful forming fabric, pu can evaluate the consequences of change. U sing the PAPTAC G18 data sheet as a base, this paper will demonstrate the u sefulness of an engineered approach in defining: Total top surface drainage area; Individual drainage hole (orifice) machine direction (MD) and cross-machine direction (CMD dimensions in I relation to fibre lengths; The importance of CMD yarn support to the fibre over machine direction thig h MD fibre orientation exiting the headbox); Beran Fibre Support Index.