(1) High filtration efficiency and good air permeability, which can increase the loading ability of the equipment and reduce loss and energy consumption.
(2)High efficiency of cleaning and low density of gas. Gas density can be greatly lower than the country standard stipulation.
(3)After heating,singeing and coating treatment, the surface should be smooth, and difficult to stop up and out of shape. easily-dedusting and long using-life.
(4)Extensive use and good chemical stability. It can filter normal atmospheric temperature or high-temperature gas including corroding gas mixed with acid and alkali, water, oil.
Needle punched felt is widely used in metallurgy, chemical industry, building materials, generating electricity, pottery,machinery,mine,petroleum,dyestuffs,food,grain processing, etc. It is an ideal medium separate liquid from solid and ideal material to purify and filter gas.
2.Polyester Filter Cloth series,made of polyester fiber (PET), include PET staple fabrics,PET long thread fabrics,and PET monofilament fabrics.These products possess the properties of strong acid-resistance,fair alkali-resistance and operating temperature max. 130ºC.They can be widely used in pharmaceutical,non-ferrous meltals, chemical industries for the equipments of frame filter presses, centrifuge filters, vacuum filters etc.The filtering precision can reach less than 5 microns.
3.Polypropylene Filter Cloth series,made of polypropylene fiber (PP), include PP staple fabrics,PP long thread fabrics,and PP monofilament fabrics.These products possess the properties of acid-resistance,alkali-resistance,small specific gravity,melting point 142-146ºC,and operating temperature max.90ºC.They are mainly used in precision chemical,dyes,sugar,pharmacy,alumina industries for the equipments of frame filter presses,belt filers,blend belt filers,
discfiters,drum filers etc.The filtering precision can reach less than 1 micron.
4. Polyamide Filter Cloth series,made of polyamide fiber (PA), include PA long thread fabrics and PA monofilament fabrics.These products possess the properties of acid-resistance,alkali-resistance,high mightiness,melting point of 215-250ºC,and operating temperature 130ºC.They are also divided into two series of PA6 and PA66,and the later performance is better.They are mainly used in the industries of chemical,coal mining, building materials,melting for the equipments in the strong alkali operating conditions, such as filter presses,discfiters and centrifuge filers.The filtering precision can reach less than 5 microns.
5. The special filter materials, with good permeability and high dedusting efficiency,are widely used for dust collection and gas control etc. After the heat treatment, they become more smooth and more durable, which remove dust easier. The special filter materials mainly cover the one used in normal temperature, the one with strong heat-resisting ability and the one with compund ability and so on.