Spiral Filter Fabrics are made of abrasion resistant PET. They contain a strong spiral seam, which has the same tensile strength as the fabric. In comparison with the clipper seam on woven fabrics, the seam on Spiral Filter Fabrics has a longer service life and does not fail prematurely. It is no longer the weak point of the belt.
Dewatering properties of the Spiral Filter Fabrics are given by its air permeability, which can be adjusted by inserting a suitable type of filler yarns inside the spirals.
Spiral Filter Fabrics are especially suitable for dewatering of fibrous material (paper sludge, pulp) and sludges with a high content of inorganic particles (e.g. mining sludges), but they can also be used for dewatering of treated municipal sludge. If the sludge has a high content of organic particles or if it is sticky and muddy, there is a risk of spiral fabric blinding.

Benefits:

● Long service life

● Suitable especially for machines where belt deformation often occurs
● Abrasion resistant design
● No problems with the seam
● Smooth adhesive treated belt edges

● Suitable for fibrous sludges