Filter Cloth: Yarn Types
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.
Continue to Step 2 - Weave
Patterns 
Back to Filter Cloth Main
200 West Road
Portsmouth, NH 03801
(603) 433-1299
Micronics Filtration Ltd.
Sandbach Road Burslem, Stoke-on-Trent ST6 2DR
(01782) 284 385