Filter press cloth normally include 4 types, polyester(terylene/PET)polypropylene (PP), chinlon (polyamide/nylon) and vinylon. Especially the PET and PP materials are very popularly used. Plate frame filter press filter cloth is used for solid liquid separation, so it has higher requirements on resistance performance to both acid and alkali, and some time might on the temperature etc.
Polyester Filter Cloth can be divided into PET staple fabrics, PET long thread fabrics and PET monofilament. These products possess the properties of strong acid- resistance, fair alkali- resistance and operating temperature is 130 centigrade degrees. They can be widely used in pharmaceuticals, non-ferry melting, chemical industrial for the equipment of frame filter presses, centrifuge filters, vacuum filters etc. The filtering precision can reach less than 5microns.
Polypropylene filter cloth possesses the properties of acid-resistance.Alkali-resistance, small specific gravity, a melting point of 142-140centigrade degrees, and operating temperature maximum of 90 centigrade degrees. They are mainly used in precision chemicals, dye chemical, sugar, pharmaceutical, alumina industry for the equipment of frame filter presses, belt filters, blend belt filters, disc filters, drum filters ect. The filter precision can reach less than 1 micron.
Good Material
Acid and alkali resistance, not easy to corrode, high temperature resistance, low temperature resistance, good filterability.
Good Wear Esistance
Carefully selected materials, carefully made products, not easy to damage and have a long service life.
Wide Range of Uses
It is widely used in chemical, pharma-nautical, metallurgy, dyestuff, food brewing, ceramics and environmental protection industries.
Material
|
PET(Polyester)
|
PP
|
PA Monofilament
|
PVA
|
Common Filter Cloth
|
3297、621、120-7、747、758
|
750A、750B、108C、750AB
|
407、663、601
|
295-1、295-104、295-1
|
Acid Resistance
|
Strong
|
Good
|
Worse
|
No Acid Resistance
|
Alkali Resistance |
Weak Alkali Resistance
|
Strong
|
Good
|
Strong Alkali Resistance
|
Corrosion Resistance
|
Good
|
Bad
|
Bad
|
Good
|
Electrical Conductivity
|
Worst
|
Good
|
Better
|
Just So So
|
Breaking Elongation
|
30%-40%
|
≥ Polyester
|
18%-45%
|
15%-25%
|
Recoverability
|
Very Good
|
A Little Better Than Polyester
|
Worse
|
|
Wear Resisitance
|
Very Good
|
Good
|
Very Good
|
Better
|
Heat Resistance
|
120℃
|
90℃ A Little Shrink
|
130℃ A Little Shrink
|
100℃ Shrink
|
Softening Point(℃) |
230℃-240℃
|
140℃-150℃
|
180℃
|
200℃
|
Melting Point(℃) |
255℃-265℃
|
165℃-170℃
|
210℃-215℃
|
220℃
|
Chemical Name
|
Polyethylene Terephthalate
|
Polyethylene
|
Polyamide
|
Polyvinyl Alcohol
|
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