Needle-punching filter felt is a laminar complex substance of
weaving cloth and nonwovens. In the middle material, there is one layer
of scrim to strengthen steel skeletons . The strength and
extension at break basically depend on the strength of raw material.
In recent years,, chemical fiber industrial thread with high strength has
been developed. If we use this material, the ability of filing would be up to
1600-2000N and extension rate would be reduced. This will greatly
improve the resistance to impact of the filter material. Meanwhile,
nonwoven needle punched filter material also can be used
widely in liquid filing field. For instance, we can use
needle-punched filter with strong scrim as substitute to make industrial bags to avoid
breaking for wind and pressure.