The needle punched felt treated with film coating adds the characteristics of film coating material on the basis of the original filter material Generally, polytetrafluoroethylene microporous film is selected, which has excellent characteristics such as smooth surface, hydrophobicity, breathability, and good chemical stability It can almost intercept all the dust in the dusty airflow and ensure the maximum flux of the airflow without increasing the operating resistance, making it an ideal flue gas filtration material
Performance parameters of polyester long fiber filter cloth:
| Product Name |
Polyester peritoneal needle felt |
| Material |
Ordinary laminated film |
High strength base cloth film |
| Weight (g/m2) |
450 |
500 |
550 |
600 |
400 |
450 |
500 |
550 |
600 |
| Thickness (mm) |
1.6 |
1.8 |
2.0 |
2.2 |
1.4 |
1.55 |
1.75 |
1.95 |
2.15 |
| Air permeability (L/m2/S) |
60 |
48 |
40 |
30 |
58 |
55 |
45 |
37 |
32 |
| Fracture strength
（N/5×20cm） |
|
> 750 |
> 750 |
> 800 |
> 800 |
> 1000 |
> 1000 |
> 1100 |
> 1100 |
> 1150 |
| Latitude |
> 1150 |
> 1200 |
> 1300 |
> 1400 |
> 1250 |
> 1300 |
> 1400 |
> 1500 |
> 1500 |
| Elongation at break (%) |
|
< 35 |
< 35 |
< 35 |
< 35 |
< 25 |
< 25 |
< 25 |
< 25 |
< 25 |
| Latitude |
< 55 |
< 55 |
< 55 |
< 55 |
< 45 |
< 45 |
< 45 |
< 45 |
< 45 |
| Tensile strength at break (Mpa/min) |
2.20 |
2.25 |
2.35 |
2.45 |
2.30 |
2.40 |
2.45 |
2.50 |
2.60 |
| Operating temperature (℃) |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
≤130 |
| Instantaneous operating temperature (℃) |
150 |
150 |
150 |
150 |
150 |
150 |
150 |
150 |
150 |
| Acid resistance |
Good |
Good |
| Alkali resistance |
|
|
| Abrasion |
Excellent |
Excellent |
| Hydrolytic stability |
|
|
|
Post processing methods include singeing, calendering, heat setting, and laminating |
|
