Chemical resistant expanded fiberglass filter fabric – for filtration

Expanded fiberglass filter fabric is a filter material made of glass fiber through a puffing process. The core process is to form tiny pores on the surface of the glass fiber through high-temperature puffing, while maintaining the high strength and chemical stability of the fiber itself, and finally forming a cloth with high air permeability, low resistance and high efficiency filtration performance.

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Expanded fiberglass filter fabric manufactured from continuous filament yarns woven into an open-mesh structure, then mechanically expanded to create a controlled pore network. The fabric is finished with a chemical-resistant treatment that withstands exposure to acids, alkalis, and organic solvents within defined concentration ranges. The expanded mesh provides high permeability and low pressure drop while retaining particulate matter down to 50 µm in nominal filtration rating. Typical applications include chemical process filtration, separator media in electrochemical cells, and pre-filter layers in corrosive environments. The fabric is supplied in roll form with custom mesh openings, width, and chemical finish options.

Chemical Resistance

Resists attack from hydrochloric acid, sulfuric acid, sodium hydroxide, and common organic solvents. Treatment is applied during fiber sizing, not as a surface coating.

pH 1–13

High Permeability

Open-mesh structure provides high flow rates with low pressure drop. Air permeability ranges from 300 to 800 L/m²·s at 200 Pa depending on mesh configuration.

Low ΔP

Controlled Pore Size

Nominal filtration ratings from 50 to 500 µm. Mesh opening and strand diameter are configured to match target particle retention and flow requirements.

50–500 µm

Thermal Stability

Continuous service temperature up to 260 °C. The fiberglass substrate does not deform or degrade under thermal cycling within the operating range.

260 °C

Specification

MaterialE-glass / C-glass filament

StructureWoven, mechanically expanded

Nominal filtration rating50 – 500 µm

Mesh opening0.1 – 1.2 mm

Areal weight120 – 320 g/m²

Air permeability300 – 800 L/m²·s @ 200 Pa

Continuous temperature260 °C

Chemical resistancepH 1 – 13 (defined media)

Roll width500 – 2000 mm

Roll length50 – 200 m (custom)

Application Areas

Chemical process filtration Electrochemical cell separators Corrosive gas pre-filters Acid mist eliminators Solvent recovery media Wastewater screening Catalyst support layers Battery separator substrates

Handling Notes

Cut with sharp shears or rotary cutter to avoid crushing the expanded mesh. Support the fabric on a rigid frame or perforated plate when used in pressure filtration. For chemical service, verify compatibility with the specific medium concentration and temperature before installation. Rinse with deionized water before first use in sensitive processes.

Frequently Asked Questions

Which chemicals is this fabric resistant to?

The chemical-resistant treatment provides protection against dilute and moderate concentrations of hydrochloric acid, sulfuric acid, sodium hydroxide, and common organic solvents. Resistance depends on concentration, temperature, and exposure duration. Compatibility data for specific media should be confirmed before use in critical processes.

How is the filtration rating determined?

Nominal filtration rating is based on the mesh opening and strand diameter of the expanded structure. The rating represents the approximate particle size retained at 85–90% efficiency under specified test conditions. Actual retention may vary with particle shape, flow rate, and fluid viscosity.

Can the fabric be cleaned and reused?

The fabric can be backwashed or rinsed depending on the retained material. For chemical service, neutralize and rinse with appropriate solvent or water. Inspect the mesh after cleaning for deformation or damage before reuse in critical filtration stages.

Is custom mesh configuration available?

Yes. Mesh opening, strand diameter, areal weight, and chemical finish can be customized. Roll width and length are configured to client requirements. Minimum order quantities apply based on specification.

Reference Data

Property	Typical Range	Test Method
Nominal filtration rating	50 – 500 µm	Bubble point / glass bead challenge
Mesh opening	0.1 – 1.2 mm	Optical measurement
Areal weight	120 – 320 g/m²	ASTM D3776
Air permeability	300 – 800 L/m²·s @ 200 Pa	ASTM D737
Tensile strength (warp)	≥ 350 N/50mm	ASTM D5035
Continuous service temp	260 °C	Internal
Chemical resistance	pH 1 – 13 (defined media)	Internal immersion test

Custom design, development, and manufacturing are available. Products conform to international standards and are supplied for B2B industrial filtration applications.