PP, PET, PA and weave type
Filter press cloth is selected by process chemistry, abrasion, particle size, air permeability, cake release and washing method.
The cloth controls filtrate clarity and cake release
PP is the common choice for chemical resistance. PET serves strong abrasive slurries, while PA fits selected alkaline and elevated-temperature duties. Monofilament cleans and releases cake readily; multifilament retains finer particles. A CGR gasketed execution is available.
Four basic options
The baseline choice for acids, alkalis and aqueous sludges; check the temperature.
High strength and abrasion resistance for abrasive mineral slurries.
Strong in alkaline media; confirm chemical compatibility.
Monofilament cleans more easily; multifilament retains fine solids better but is harder to wash.
What the cloth is selected by
Test several cloths for a new slurry.
- pH and chemical compatibility
- Operating temperature
- Solvent and reagents
- Abrasion
- Particle size and shape
- Required filtrate clarity
- Cake release
- Washing method and frequency
What to send on water, slurry and sludge
- Flow, pH, temperature, density and solids
- Particle size, abrasion, compressibility and laboratory test
- Target cake moisture and filtrate quality
- Cycles, cloth washing, discharge and disposal
Making and finishing
- Made to drawing or measured plate
- Air permeability and weave selection
- Calendering, heat setting and edge finishing
- CGR gasketed execution
New slurry: test first
For a new slurry, run a laboratory test: filtration rate, pressure, cake formation time, cake moisture, filtrate quality and cake release are measured. Several cloth samples are often compared in a laboratory filter test.
On this topic
Chamber, membrane, automatic or tower — selecting the press type by slurry, cycle, cake moisture and discharge.
Open →Filter pressesPressure separation of slurries into dewatered cake and filtrate, from laboratory testing and cloth selection to an automated line and lifecycle service.
Open →TroubleshootingSymptom → cause → check → action: a matrix for high ΔP, dust leakage, short life, wet cake and unstable measurements.
Open →An engineer will answer your question
We review the specification, identify missing measurements and propose a process arrangement and supply scope.