Polyester needle-punched nonwoven is excellent for filtration, abrasion resistance, energy absorption, and when oxygen in levels not exceeding 15% is present.
Polyester is optimum when alkaline and mineral acids are present. Singeing and glazing techniques enhance cake release in certain applications.
Excellent filtration efficiency
Low pressure drop
Good all-around chemical resistance
Fiber content PET
Continuous operating temperature 135°C (275°F) Maximum surge temperature 150°C (302°F) Acid resistance Fair
Alkali resistance Fair
End use application:
Chemical processing: dryers, bin vents, and nuisance dust collectors in the pigment, plastic, pharmaceutical, and catalyst industries
Mineral processing: finish mills, raw mills, bulk pneumatic conveying, and bin vent dust collectors
Metal processing: : process venting dust collectors in the lead, lead oxide, and iron and steel industries. Pulverized coal injection systems, fume and bulk handling systems in coke production, and sand reclamation systems in foundries Power generation and incineration: material handling for coal and limestone