Industrial PET Polyester Monofilament 0.08mm-2.0mm Custom Diameter High Strength Monofilament
PET (polyester) monofilament is one of the most widely consumed monofilament materials for industrial use, extensively applied in paper machine fabrics, printing screens, filter sieves, agricultural shade nets, industrial filtration and other fields.
I. Core Parameters of PET Monofilament Specifications
1. Filament Diameter
Filament diameter is the fundamental parameter, measured in mm (millimeters) or denier (D).
Common Diameter Specification Table
Diameter (mm) | Approximate Denier | Typical Applications |
0.08 | ~26D | Precision filter screens, decorative meshes |
0.10 | ~40D | Printing screens, filter sieves |
0.15 | ~90D | Paper machine fabrics, industrial filtration |
0.20 | ~160D | General filter sieves, agricultural shade nets |
0.30 | ~360D | Industrial sieves, safety nets |
0.40 | ~640D | Heavy-duty sieves, mesh belts |
0.50 | ~1000D | Load-bearing nets, conveyor belts |
0.70 | 1960D | Spiral mesh belts |
0.90 | 3240D | Spiral mesh belts |
PET monofilament covers diameters ranging from 0.08 mm to 2.0 mm; non-standard sizes can be customized upon request.
2. Tensile Strength at Break
The tensile strength of PET monofilament generally ranges from 400 MPa to 700 MPa.
Application-based strength selection guidelines:
• General filter sieves: 400–500 MPa is sufficient
• Industrial filtration: ≥500 MPa recommended
• High-strength mesh belts: ≥600 MPa recommended
Higher tensile strength delivers superior pull resistance yet raises material costs accordingly.
3. Elongation at Break
Elongation at break of PET monofilament typically falls between 15% and 35%.
Elongation Range | Properties | Suitable Applications |
15%–20% | Stiff, strong supporting rigidity | Filter sieves, mesh belts |
20%–30% | Balanced strength & toughness | Paper machine fabrics, filter screens |
30%–35% | Soft texture | Woven meshes, decorative nets |
4. Thermal Shrinkage Rate
Thermal shrinkage is a critical index governing dimensional stability. Shrinkage data tested in boiling water for 30 minutes.
Grade | Boiling Water Shrinkage (30 min) | Applicable Scenarios |
Standard Grade | 8%–12% | Applications with loose dimensional tolerance |
Low Shrinkage Grade | 3%–6% | Paper machine fabrics, precision sieves |
Ultra-Low Shrinkage Grade | ≤3% | High-precision filtration, industrial mesh belts |
Shenglan supplies low-shrinkage PET monofilament with shrinkage controlled within ≤5%.
5. Melting Point & Temperature Resistance
PET monofilament has a melting point of approx. 255°C, with continuous service temperature between 120°C and 150°C.
Temperature grade recommendations:
• Ambient temperature environments: Standard PET monofilament
• Working conditions above 100°C: Modified heat-resistant PET monofilament recommended
• Working conditions above 150°C: Aramid monofilament suggested as alternative
6. Diameter Tolerance
Diameter tolerance reflects filament uniformity.
Grade | Tolerance Range |
Standard Grade | ±0.01 mm |
Precision Grade | ±0.005 mm |
Ultra-Precision Grade | ±0.003 mm |
Ultra-precision grade is designed for precision filter screens. Shenglan can customize tolerance as requested.
II. PET Monofilament Selection Guide by Application
Application Scenario | Recommended Diameter | Recommended Tensile Strength | Shrinkage Requirement |
Paper Forming Fabrics | 0.15–0.25 mm | ≥500 MPa | ≤5% |
Printing Screens | 0.10–0.18 mm | ≥450 MPa | ≤6% |
Industrial Sieves | 0.20–0.50 mm | ≥500 MPa | ≤8% |
Agricultural Shade Nets | 0.25–0.40 mm | ≥400 MPa | No special requirements |
Wastewater Filter Screens | 0.15–0.30 mm | ≥500 MPa | ≤6% |
Conveyor & Spiral Mesh Belts | 0.40–1.0 mm | ≥600 MPa | ≤5% |
III. Color & Post-Treatment Specifications of PET Monofilament
Color Options
1. Transparent Natural: Standard stock, lowest cost
2. Optical Bright White: For decorative nets and food-contact applications
3. Black Anti-UV: Outdoor service, carbon black added for anti-aging performance
4. Custom Colored: Color matched via masterbatch (higher minimum order quantity required)
Post-Treatment Options
• Oil finishing: Boost surface smoothness and reduce friction
• Anti-static treatment: For electronic industry applications
• Anti-UV stabilization: Long-term outdoor exposure use