Table 1.
Characteristics of the produced filtering nonwovens: WP0 was based on polypropylene and WSB0 was based on PET-doped polypropylene.
| Variant | Conditioning | Parameter | Mean | Standard Deviation | Min. | Max. |
|---|---|---|---|---|---|---|
| WP0 | No | Paraffin oil mist penetration (%) | 15.15 | 2.01 | 11.00 | 19.80 |
| Airflow resistance (Pa) | 174.91 | 12.08 | 154.00 | 204.00 | ||
| Yes | Paraffin oil mist penetration (%) | 22.83 | 2.29 | 19.00 | 26.40 | |
| Airflow resistance (Pa) | 180.85 | 12.07 | 159.00 | 209.00 | ||
| WSB0 | No | Paraffin oil mist penetration (%) | 10.02 | 1.17 | 7.30 | 12.00 |
| Airflow resistance (Pa) | 129.52 | 7.17 | 115.00 | 145.00 | ||
| Yes | Paraffin oil mist penetration (%) | 11.38 | 1.60 | 8.30 | 14.00 | |
| Airflow resistance (Pa) | 129.95 | 7.19 | 15.50 | 145.50 |