2.5 layer forming fabrics are also known as double layer extra design. Extra support double layer forming fabrics are an extension of double layer fabric developments. Addition of extra strands on forming side enhance fiber support and fines retention. Improved paper surface is obtained without compromising stability and life potential.

Double and 2.5 Layer Forming Fabrics
2.5 Layer Forming Fabrics
Paper side of 2.5 Layer Forming Fabrics
Wear side fo 2.5 Layer Forming Fabrics

Commonly known as 2.5-layer forming fabric, extra support double layer forming fabrics are to further improve the characteristics of double-layer design. It's a standard double layer forming fabric with an additional weft yarn on the sheet side of the fabric. There is an improvement in sheet formation, smoothness, reduction of wire mark and better cleaning of the showers. Extra support double layer forming fabrics are commonly used in newsprint and fine papers production or in applications that use very short fibers.

2.5 layer forming fabrics can be woven in 8, 16 or 24 shed patterns. The weave design offers a uniform distribution of fibers and provides outstanding drainage capacity as a result of high top surface open area. The large diameter of weft yarns and long crimp on machine side provides excellent wear resistance and runability. The 2.5 layer forming fabric has the features of excellent fiber support, sheet formation and high drainage.

Specifications:

Type Warp mesh Weft count Warp diameter Weft diameter Air permeability FSI DI
2B6408 71.5-72.5 67.5-68.5 0.15 0.18 0.12/0.22 0.22 275 CFM 155 25.7
71.5-72.5 65.5-66.5 0.15 0.18 0.12/0.22 0.22 290 CFM 152 26.3
71.5-72.5 56.5-57.5 0.15 0.18 0.12/0.22 0.22 370 CFM 135 29.0
71.5-72.5 47.5-48.5 0.15 0.18 0.12/0.22 0.22 500 CFM 119 33.0
2B5616 62.5-63.5 60.5-61.5 0.17 0.20 0.13/0.30 0.30 285 CFM 139 23.9
62.5-63.5 59.5-60.5 0.17 0.20 0.13/0.35 0.35 250 CFM 137 20.6
62.5-63.5 53.5-54.5 0.17 0.20 0.13/0.35 0.35 320 CFM 126 23.7
62.5-63.5 47.5-48.5 0.17 0.20 0.13/0.35 0.35 380 CFM 115 25.1
2B4216 47.0-48.0 47.0-48.0 0.22 0.22 0.13/0.35 0.35 380 CFM 107 25.1
47.0-48.0 40.0-41.0 0.22 0.25 0.17/0.40 0.40 445 CFM 94 25.1
2B3616 40.5-41.5 38.5-39.5 0.26 0.30 0.20/0.50 0.50 350 CFM 89 18.8
40.5-41.5 36.5-37.5 0.26 0.30 0.20/0.50 0.50 400 CFM 85 20.4
40.5-41.5 34.5-35.5 0.26 0.30 0.20/0.50 0.50 445 CFM 82 21.4