Industrial Paper Series · Electric Paper
Filter Paper
Filtration media with high wet strength and controlled porosity — supplied in heat-seal and non-heat-seal constructions.
12g/m²
Filtration media with high wet strength and controlled porosity — supplied in heat-seal and non-heat-seal constructions.
A filter sheet has to stay intact wet. This grade is specified for wet tensile strength as well as dry, because the working figure is the one that applies once the medium is in contact with liquid. Porosity and air permeability are what set the filtration rate.
Typical light construction runs around 12.5 g/m² at roughly 40 µm thickness, with porosity near 247 µm and air permeability near 1 677 L/m²·s. Testing follows ISO methods — ISO 536 for grammage, ISO 1924-2 and ISO 3781 for dry and wet tensile, ISO 1974 for tear, ISO 9237 for air permeability and ISO 2470 for brightness.
Typical applications — Media filtration; tea and beverage infusion papers in heat-seal and non-heat-seal forms
| Property | Typical value | Method |
|---|---|---|
| Grammage | 12.5 g/m² typical for light construction | ISO 536 |
| Thickness | ≈ 40 µm | ISO 534 |
| Tensile strength, dry MD / CD | ≈ 14.8 / 3.7 N per 15 mm | ISO 1924-2 |
| Tensile strength, wet MD / CD | ≈ 4.0 / 1.1 N per 15 mm | ISO 3781 |
| Tear strength | ≈ 210 N | ISO 1974 |
| Porosity | ≈ 247 µm | |
| Air permeability | ≈ 1 677 L/m²·s | ISO 9237 |
| Brightness | ≈ 76 % | ISO 2470 |
| Moisture | ≈ 7 % |
Figures are typical values from mill technical data, not a guaranteed specification. We agree the binding specification with you before the mill runs.
Media filtration; tea and beverage infusion papers in heat-seal and non-heat-seal forms.
The weights we run are 12 g/m². Reel width is slit to your line; anything outside this list depends on the mill and the run, and is confirmed with the quotation.
Reels or sheets — slit to your line width.
Full technical data sheet and batch test report on request.
Send the basis weight, the reel width and the monthly volume. You get a quotation from someone who knows the mill, usually within one working day.
Tell us basis weight, reel width and monthly volume — you will get a quotation from someone who knows the mill, usually within one working day.