PP is the short form for polypropylene, a solid material that is colorless, odorless, and harmless. It is a type of synthetic resin that can be melted and reshaped. PP is a lightweight plastic that is both clear and transparent. It possesses remarkable qualities such as resistance to chemicals, heat, and electricity, as well as high durability and easy processability. Additionally, it is highly resistant to wear and tear.
Polypropylene (PP) fabric made by needle punching is extensively utilized in the production of filter bags. PP needle felt is a particular type of needle felt that is frequently employed in industrial filtration. It is a non-woven material created by mechanically needling polypropylene fibers together. This fabric offers exceptional filtration capabilities and long-lasting durability. Its main purpose is to effectively separate and filter solid particles, liquids, and gases. The manufacturing process for this specific needle felt is similar to conventional needle felting, but it uses polypropylene fibers as the preferred material.
Layer: Polypropylene
Scrim: Polypropylene
Available weight: 400g/m2, 450g/m2, 500g/m2, 550g/m2
Treatment: Heat-set, singed and glazed, Water & Oil repellent, e-PTFE membrane laminated
Service temperature: 90℃ continue, 120℃ maximum
Regular width: 2m-2.2m
Application: chemical, food, pharmaceutical, mining, etc.
Characteristics of polypropylene filter needle felt
Chemical durability: It possesses robust chemical durability and can operate in diverse chemical surroundings without experiencing corrosion.
Resistance to wear: The polypropylene fiber exhibits considerable resistance to wear, ensuring that the filter needle felt maintains excellent performance over extended periods of use.
Minimal water absorption: It demonstrates exceptionally low water absorption, allowing for consistent filtration performance even in damp conditions.
Stability in size: It displays reduced sensitivity to fluctuations in temperature and humidity, thereby enabling the filter needle felt to retain stable dimensions and performance in various environments.
Convenience in cleaning: Due to its limited susceptibility to picking up contaminants, it is relatively effortless to clean.
Fiber Characteristic
| Fiber | Tensile Strength | Abrasion Resistance | Chemical Acids | Alkali Resistance | Supports Combustion | Continuous Temp(℃) | Surge Temp (℃) |
| Polypropylene | Excellent | Excellent | Excellent | Excellent | Yes | 93 | 93 |
| Nylon | Excellent | Excellent | Poor | Excellent | Yes | 93 | 93 |
| Homopolymer Acrylic | Good | Good | Very Good | Fair | Yes | 127 | 140 |
| Copolymer Acrylic | Average | Fair | Good | Fair | Yes | 110 | 120 |
| Polyester | Excellent | Excellent | Fair | Fair | Yes | 135 | 149 |
| Aramid | Very Good | Excel | Fair | Poor | NO | 191 | 218 |
| PTFE | Average | Fair | Excellent | Excellent | NO | 232 | 260 |
| Fiberglass | Excellent | Fair | Good | Fair | NO | 260 | 288 |
| PPS | Very Good | Excel | Excellent | Very Good | NO | 191 | 218 |
| P-84 | Very Good | Excel | Very Good | Fair | NO | 260 | 288 |
Specification
| Spec Item | Layer/Scrim | Weight（g/m2） | Air Permeability（cm3/cm2.s) | Thickness (mm) | Warp Tensile Strength (N/50mm) | Weft Tensile Strength (N/50mm) | Warp Elong（%） | Weft Elong（%） | Treatment | Continuous Temp (℃) |
| 001UA | 100% PET | 500±5% | 15±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | Heatset, singed &glazed | ≤130 |
| 001FA | 100% PET | 500±5% | 15±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | Water and oil repellent | ≤130 |
| 002UA | PET/anti static PET | 500±5% | 15±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | Heatset, singed &glazed | ≤130 |
| 003UA | PET+5% anti static fiber/PET | 500±5% | 15±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | Heatset, singed and glazed | ≤130 |
| 001UM | 100% PET | 500±5% | 4±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | with membrane | ≤130 |
| 100UA | 100% PP | 500±5% | 11±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | Singed &glazed | ≤80 |
| 200UA | 100% Acrylic | 500±5% | 15±25% | 1.8±0.2 | ≥700 | ≥1100 | ≤55 | ≤50 | Heatset, singed &glazed | ≤90 |
| 301KA | PPS | 500±5% | 10±25% | 1.8±0.2 | ≥800 | ≥1300 | ≤25 | ≤50 | PTFE finished | ≤160 |
| 301KM | PPS | 500±5% | 4±25% | 1.8±0.2 | ≥800 | ≥1300 | ≤25 | ≤50 | with membrane | ≤160 |
| 303KA | PPS/PTFE | 580±5% | 10±25% | 1.8±0.2 | ≥700 | ≥1100 | ≤20 | ≤30 | PTFE finished | ≤160 |
| 303KM | PPS/PTFE | 530±5% | 4±25% | 1.8±0.2 | ≥700 | ≥1100 | ≤20 | ≤30 | with membrane | ≤160 |
| 311KA | PPS+PTFE/ PTFE | 650±5% | 10±25% | 2±0.2 | ≥800 | ≥1200 | ≤25 | ≤50 | PTFE finished | ≤160 |
| 500HA | Nomex/Nomex | 550±5% | 21±25% | 2.1±0.2 | ≥800 | ≥1200 | ≤25 | ≤50 | Heatset singed & glazed | ≤200 |
| 500KA | Nomex/ Nomex | 550±5% | 18±25% | 2.1±0.2 | ≥800 | ≥1200 | ≤25 | ≤50 | PTFE finished | ≤200 |
| FMS 801B | Fiberglass composite / Fiberglass | 900±5% | 20±25% | 2.1±0.2 | ≥2500 | ≥2500 | ≤10 | ≤10 | PTFE finished | ≤240 |
| 600KM | PTFE/ PTFE | 780±5% | 4±25% | 1.6±0.2 | ≥700 | ≥700 | ≤10 | ≤10 | with membrane | ≤240 |
PP is the short form for polypropylene, a solid material that is colorless, odorless, and harmless. It is a type of synthetic resin that can be melted and reshaped. PP is a lightweight plastic that is both clear and transparent. It possesses remarkable qualities such as resistance to chemicals, heat, and electricity, as well as high durability and easy processability. Additionally, it is highly resistant to wear and tear.
Polypropylene (PP) fabric made by needle punching is extensively utilized in the production of filter bags. PP needle felt is a particular type of needle felt that is frequently employed in industrial filtration. It is a non-woven material created by mechanically needling polypropylene fibers together. This fabric offers exceptional filtration capabilities and long-lasting durability. Its main purpose is to effectively separate and filter solid particles, liquids, and gases. The manufacturing process for this specific needle felt is similar to conventional needle felting, but it uses polypropylene fibers as the preferred material.
Layer: Polypropylene
Scrim: Polypropylene
Available weight: 400g/m2, 450g/m2, 500g/m2, 550g/m2
Treatment: Heat-set, singed and glazed, Water & Oil repellent, e-PTFE membrane laminated
Service temperature: 90℃ continue, 120℃ maximum
Regular width: 2m-2.2m
Application: chemical, food, pharmaceutical, mining, etc.
Characteristics of polypropylene filter needle felt
Chemical durability: It possesses robust chemical durability and can operate in diverse chemical surroundings without experiencing corrosion.
Resistance to wear: The polypropylene fiber exhibits considerable resistance to wear, ensuring that the filter needle felt maintains excellent performance over extended periods of use.
Minimal water absorption: It demonstrates exceptionally low water absorption, allowing for consistent filtration performance even in damp conditions.
Stability in size: It displays reduced sensitivity to fluctuations in temperature and humidity, thereby enabling the filter needle felt to retain stable dimensions and performance in various environments.
Convenience in cleaning: Due to its limited susceptibility to picking up contaminants, it is relatively effortless to clean.
Fiber Characteristic
| Fiber | Tensile Strength | Abrasion Resistance | Chemical Acids | Alkali Resistance | Supports Combustion | Continuous Temp(℃) | Surge Temp (℃) |
| Polypropylene | Excellent | Excellent | Excellent | Excellent | Yes | 93 | 93 |
| Nylon | Excellent | Excellent | Poor | Excellent | Yes | 93 | 93 |
| Homopolymer Acrylic | Good | Good | Very Good | Fair | Yes | 127 | 140 |
| Copolymer Acrylic | Average | Fair | Good | Fair | Yes | 110 | 120 |
| Polyester | Excellent | Excellent | Fair | Fair | Yes | 135 | 149 |
| Aramid | Very Good | Excel | Fair | Poor | NO | 191 | 218 |
| PTFE | Average | Fair | Excellent | Excellent | NO | 232 | 260 |
| Fiberglass | Excellent | Fair | Good | Fair | NO | 260 | 288 |
| PPS | Very Good | Excel | Excellent | Very Good | NO | 191 | 218 |
| P-84 | Very Good | Excel | Very Good | Fair | NO | 260 | 288 |
Specification
| Spec Item | Layer/Scrim | Weight（g/m2） | Air Permeability（cm3/cm2.s) | Thickness (mm) | Warp Tensile Strength (N/50mm) | Weft Tensile Strength (N/50mm) | Warp Elong（%） | Weft Elong（%） | Treatment | Continuous Temp (℃) |
| 001UA | 100% PET | 500±5% | 15±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | Heatset, singed &glazed | ≤130 |
| 001FA | 100% PET | 500±5% | 15±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | Water and oil repellent | ≤130 |
| 002UA | PET/anti static PET | 500±5% | 15±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | Heatset, singed &glazed | ≤130 |
| 003UA | PET+5% anti static fiber/PET | 500±5% | 15±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | Heatset, singed and glazed | ≤130 |
| 001UM | 100% PET | 500±5% | 4±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | with membrane | ≤130 |
| 100UA | 100% PP | 500±5% | 11±25% | 1.8±0.2 | ≥1000 | ≥1200 | ≤30 | ≤55 | Singed &glazed | ≤80 |
| 200UA | 100% Acrylic | 500±5% | 15±25% | 1.8±0.2 | ≥700 | ≥1100 | ≤55 | ≤50 | Heatset, singed &glazed | ≤90 |
| 301KA | PPS | 500±5% | 10±25% | 1.8±0.2 | ≥800 | ≥1300 | ≤25 | ≤50 | PTFE finished | ≤160 |
| 301KM | PPS | 500±5% | 4±25% | 1.8±0.2 | ≥800 | ≥1300 | ≤25 | ≤50 | with membrane | ≤160 |
| 303KA | PPS/PTFE | 580±5% | 10±25% | 1.8±0.2 | ≥700 | ≥1100 | ≤20 | ≤30 | PTFE finished | ≤160 |
| 303KM | PPS/PTFE | 530±5% | 4±25% | 1.8±0.2 | ≥700 | ≥1100 | ≤20 | ≤30 | with membrane | ≤160 |
| 311KA | PPS+PTFE/ PTFE | 650±5% | 10±25% | 2±0.2 | ≥800 | ≥1200 | ≤25 | ≤50 | PTFE finished | ≤160 |
| 500HA | Nomex/Nomex | 550±5% | 21±25% | 2.1±0.2 | ≥800 | ≥1200 | ≤25 | ≤50 | Heatset singed & glazed | ≤200 |
| 500KA | Nomex/ Nomex | 550±5% | 18±25% | 2.1±0.2 | ≥800 | ≥1200 | ≤25 | ≤50 | PTFE finished | ≤200 |
| FMS 801B | Fiberglass composite / Fiberglass | 900±5% | 20±25% | 2.1±0.2 | ≥2500 | ≥2500 | ≤10 | ≤10 | PTFE finished | ≤240 |
| 600KM | PTFE/ PTFE | 780±5% | 4±25% | 1.6±0.2 | ≥700 | ≥700 | ≤10 | ≤10 | with membrane | ≤240 |
