Formerly, the fourdrinier wire was a bronze wire mesh. Plastic forming fabric substitutes became available in the 1960s, and although more expensive, have largely displaced bronze wires on modern PMs. Nevertheless, the word "wire" remains in use as a general term for both types.

Forming fabrics have since evolved from single layer design to:

-1.5 layer.

-Double layer and Two and half layer.

-SSB Triple layer. 

the term SSB is the industry classification for "Sheet Support Binder" fabrics and is described as "a multi-layer forming fabric, in which the binding yarns become a part of the structure linking top to bottom and helping to support the sheet". 

in each case, the desired properties are built into the individual layers. They thus aim to reconcile the conflicting demands of: drainage; retention; paper quality (eg: lack of visible wire marking); web support and release; drive energy; fabric stability; ease of cleaning and long life. The most influential fabric properties on paper structure and PM performance are: air permeability; fabric density; modulus; fiber support index; drainage index; caliper; and void volume. The longer life of fabrics means less downtime for wire changing and thus extra production.

the KRAFT SSB41208W Is a plain weave paper side over eight shaft wear side shute binding SSB triple layer design having a standard paper side with an open, coarse wear side that offers an excellent combination of sheet support, drainage capacity and wear potential. the wear side long float with 3:2 paper side to wear side cross direction (CD) yarn ratio allows the use of coarse and large wear side CD yarns for excellent wear potential and dimensional stability.

           · Seam Type: Joined Endless

           · Width: up to 10 M

           · Applications: Wrapping and Packaging Papers, Board Grades