Three-quarter view of white microglass HEPA filter media roll

Filtres à air et filtration chimique

Média filtrant HEPA Microglass

A wet-laid borosilicate microglass sheet engineered for fine-fibre particle capture and stable mini-pleating in HEPA and ULPA filter packs.

Fine Borosilicate Fibres
Uniform Basis Weight
Mini-Pleat Compatible
High Particle Retention

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Introduction de produit

Microglass HEPA media is produced as a thin wet-laid sheet from controlled-diameter borosilicate fibres with a low level of binder. The random fibre network creates tortuous particle paths while retaining enough permeability for deep pleated packs. Uniform caliper and tensile strength support rotary or blade pleating, separator insertion and pack potting. The roll material is converted into complete filters where efficiency and resistance depend on grade, pleat geometry and finished-filter testing.

Key Features

Fine glass fibres create high capture efficiency at low media thickness.

Controlled basis weight keeps resistance consistent across the roll width.

Adequate machine-direction strength supports close mini-pleating.

Stable mineral fibres tolerate normal HEPA operating temperatures and humidity.

Préoccupations du client produit

Finished HEPA performance depends on media uniformity, pleat integrity and pack sealing rather than paper efficiency alone.

Basis-weight variation creates high-resistance bands across the roll.Controlled wet-laying distributes glass fibres evenly across the web.

Brittle paper cracks at tight pleat folds.Selected binder and caliper balance foldability with low airflow resistance.

Loose glass fibres shed during conversion.A bonded microglass network provides handling strength for pleating and pack assembly.

Media data is assumed to equal finished-filter leakage performance.The converted pack is potted, framed and individually verified as a complete filter element.

Les applications typiques

HEPA and ULPA filter manufactureCleanroom terminal filtersHigh-efficiency vacuum filtersLaboratory air purificationSensitive process exhaust filtration

Paramètres techniques

Representative physical ranges for borosilicate microglass HEPA media are shown below.

Matériaux de base	Wet-laid borosilicate microglass fibres with acrylic or equivalent binder
Panneau épaisseur	0.30–0.70 mm media caliper
Largeur effective	500–1600 mm usable roll width
Longueur maximale	Up to 50000 mm roll length depending on basis weight and core diameter
Acier face épaisseur	0.30–0.50 mm galvanized expanded-metal support facing when converted into a rigid filter pack
Densité Core	90–220 kg/m³ apparent sheet density
Conductivité thermique	0.035–0.060 W/(m·K) through the porous glass-fibre sheet
surface finie	Uniform white wet-laid fibre surface suitable for pleating and potting
Type joint	Continuous roll converted by pleating, separator insertion and edge potting into a filter pack
Customisation	Disponible en fonction de l'application prévue et de l'environnement d'exploitation.

Options disponibles

HEPA or ULPA media gradesDifferent resistance and basis weightsStandard or low-boron glass formulationCustom slit roll widths

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