Product Details

Product Description

Glass Fibre Needle Punched Felt is a high performance high temperature filter media designed for dust collection filter bags in harsh industrial environments. It is made of premium glass fibres processed by needle punching technology and reinforced with a woven glass fibre scrim backing, giving the fabric high tensile strength, dimensional stability and excellent filtration efficiency. The material withstands a continuous operating temperature of 260°C and instantaneous temperatures up to 280°C, making it one of the most cost-effective solutions for high temperature dust filtration.
Compared with ordinary woven glass fibre filter cloth, the needle punched felt structure forms a deep-loading porous filter layer, which provides higher dust collection efficiency and lower pressure drop. Various surface treatments such as calendering, PTFE coating, PTFE membrane lamination and acid washing are available to improve dust cake release, chemical resistance and service life.

Key Features

1. Excellent high temperature resistance: continuous working temperature up to 260°C, instantaneous temperature up to 280°C.
2. High filtration efficiency: deep-loading needle felt structure captures fine dust particles with efficiency over 99.5%, ideal dust filtration media for baghouse filter bags.
3. High tensile strength and dimensional stability: woven glass fibre scrim backing prevents stretching and deformation under high temperature and mechanical stress.
4. Good chemical resistance: stable against most acids, except hydrofluoric acid, and suitable for corrosive flue gas conditions.
5. Low pressure drop: porous felt structure ensures high air permeability and energy-saving operation of the dust collector.
6. Customizable surface treatments: calendered, PTFE coated, PTFE membrane laminated or acid washed to fit different working conditions.
7. Easy bag making and installation: good flexibility and sewing strength for various filter bag sizes and cage structures.
8. Long service life and cost saving: extended bag replacement cycles reduce maintenance cost of the dust collection system.

Main Applications

1. Cement plants: kiln, clinker cooler and raw mill dust collection systems.
2. Steel and metallurgy plants: blast furnace, converter, electric arc furnace and sintering machine dust removal.
3. Coal-fired power plants: boiler flue gas filtration in combination with pre-coating technology.
4. Asphalt mixing plants: high temperature asphalt fume and dust collection.
5. Chemical industry: high temperature drying, calcining and reaction vessel exhaust filtration.
6. Waste incineration plants: secondary dust collection of flue gas cleaning systems.
7. Non-ferrous metal smelting: copper, lead and zinc smelting off-gas filtration.
8. Carbon black, lime and gypsum production: high temperature powder collection and product recovery.

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