The "Cloth Making"
Process begins with selecting the yarns, which have specific characteristics.
Fibers are produced from polypropylene, polyethylene, Nylon,
polyester and Rilsan. Other materials (Kynar, PET etc.) are used for
special applications. Combining fiber and yarn types to suit specific
conditions is our specialty!
Step
1 - FILTER CLOTH YARN DESIGNS
Multifilament
or continuous filament yarns are produced by the continuous extrusion
of synthetic resins. The filament bunches, which have a smooth surface
are twisted together to form the yarn using an S or Z turn. Increased
twisting will reduce blinding (particle retention within the yarn
structure) while also decreasing collection efficiency. Multifilament
yarns have high tensile strength and average particle collection efficiency.
Filter cake release is average.
Monofilament
yarns are single heavier extrusions. These extrusions are smooth,
have high tensile strength and in some cases are modified with fillers.
Monofilament yarn has excellent cake release properties and resistance
to blinding. Monofilament yarns have low particle collection efficiency.
Staple
(Spun) yarns are continuously extruded synthetic filaments chopped
into short lengths. These short fibers are combed and twisted using
a cotton or woolen manufacturing system (woolen yarn has a higher
bulk). These staple (or spun) fibers have low tensile strength and
a large surface area. Particle retention is excellent and cake release
poor.