Custom Polyester Needle Punched Nonwoven Felt Rolls Wholesale
Technical Data Sheet & Production Specifications: Polyester Needle Punched Felt Rolls
We are a direct manufacturer specializing in precision-engineered Polyester (PET) Needle Punched Nonwoven Felt Rolls. Our production line utilizes multi-stage carding, cross-lapping, and high-density mechanical needle-punching to ensure isotropic fiber distribution and superior mechanical properties. Below are the verified technical parameters, tolerances, and performance testing data for our industrial felt line.
I. Standard Technical Parameter Matrix
1. Unit Weight (Grammage) Capability:
- Range: 100 gsm to 1500 gsm
- Control Tolerance: Within +/- 5% (Tested per ISO 9073-1)
2. Thickness Control:
- Range: 1.0 mm to 15.0 mm
- Calendering Tolerance: Within +/- 0.2 mm for rolls under 5mm; Within +/- 0.5 mm for rolls above 5mm (Tested per ISO 9073-2 under 0.5 kPa pressure)
3. Roll Dimensions & Slitting Tolerances:
- Maximum Machinery Width: 3200 mm (126 inches)
- Standard Roll Length: 50 meters or 100 meters (Tolerance: +/- 0.5m)
- Custom Slitting Precision: Minimum width 100 mm with a slitting tolerance of +/- 1.0 mm
4. Thermal Properties:
- Continuous Operating Temperature: Up to 130 Degrees Celsius (266 Degrees Fahrenheit)
- Melting Point: Approximately 258 Degrees Celsius to 260 Degrees Celsius
- Linear Shrinkage: < 1.5% at 150 Degrees Celsius for 90 minutes
II. Mechanical & Structural Performance Data
The following values represent standard laboratory baseline testing for mid-density configurations (Reference Spec: 500 gsm, 3.0mm thickness):
- Tensile Strength (Machine Direction - MD): >= 650 N / 50mm (Tested per ASTM D5035)
- Tensile Strength (Cross Direction - CD): >= 850 N / 50mm (Tested per ASTM D5035)
- Elongation at Break (MD): <= 40%
- Elongation at Break (CD): <= 45%
- Air Permeability: 120 to 260 L/m2/s at 200 Pa pressure drop (Tested per ASTM D737)
- Filtration Efficiency: Up to 99.5% for PM10 particles (When configured as needle felt filter media)
III. Advanced Surface Finishing & Treatment Parameters
To meet precise engineering requirements, we offer the following offline and inline technical treatments:
1. Singeing (Gas-Singeing): One or both sides. Removes surface fuzz without damaging the core structure, optimizing dust-cake release in filtration and enhancing crispness for die-cutting.
2. Calendering (Thermal Glazing): Smooths and compresses the surface fiber layer to achieve an exact thickness gauge and increase abrasion resistance.
3. Hydrophobic & Oleophobic Treatment: Chemical bath fluorocarbon impregnation rendering the felt oil-repellent and water-resistant (Water Rating >= 4 grade).
4. Anti-Static Integration: Blending 2% to 5% conductive carbon or stainless steel fibers into the polyester matrix to maintain surface resistivity down to 10^6 - 10^9 ohms.
IV. Key Industrial Applications by Specification
- 100 gsm - 250 gsm (Thickness: 1.0mm - 2.0mm): Ideal for liquid filter sleeves, automotive wire harness wrapping, and light protective packaging interlayers.
- 300 gsm - 600 gsm (Thickness: 2.5mm - 4.5mm): Standard for air dust collectors, automotive trunk trim, sound-absorption acoustic panels, and high-density consumer bags/cases.
- 700 gsm - 1500 gsm (Thickness: 5.0mm - 15.0mm): Heavy-duty industrial polishing pads, machinery anti-vibration gaskets, steel coil tension liners, and structural protective padding.
V. Factory Quality Assurance Protocol
- Batch Consistency: Every manufacturing batch undergoes electronic online monitoring for gsm uniformity.
- Sample Retention: Standard 200g physical retain samples are archived for 24 months for complete batch traceability.
- Shipping Protection: All rolls are wrapped in an inner moisture-proof PE film and an outer heavy-duty woven polypropylene bag to withstand international maritime transit stresses.