(1) Core material: EP100, EP150, EP200, EP250, EP300, EP350, EP400, EP450, EP500
(2) Belt width: 100mm-3000mm
(3) Fabric layers: 1-10 layers
(4) Covering rubber: Working surface: 0-10mm, Non-working surface: 0-6mm
Physical properties of the covering layer of polyester conveyor belt:
|
Cover Layer Performance Grade |
Tensile Strength MPa, ≥ |
Elongation at Break %, ≥ |
Abrasion Rate mm³, ≤ |
Change Rate of Tensile Strength and Elongation after 70°C × 168h Heat Aging |
| High Tear Resistance Type | 24 | 450 | 120 | – 25 ~+25 |
| High Wear Resistance Type | 18 | 400 | 100 | – 25 ~+25 |
| General type | 15 | 350 | 200 | – 25 ~+25 |
Layer adhesion strength: (Maximum peak of all samples shall not exceed 20 N/mm)
| Project | Between fabric layers | Cover layer and between fabric layers | |
| Cover layer thickness 0.8~1.5mm | Cover layer thickness >1.5 mm | ||
| Average of all samples N / mm ≥ | 4.5 | 3.2 | 3.5 |
| Minimum peak value of all samples N / mm ≥ | 3.9 | 2.4 | 2.9 |
Physical properties of the covering layer of general flame-retardant type conform to GB10822-89 standard:
| Cover layer tensile strength Mpa not less than | 10 |
| Cover layer break elongation % not less than | 350 |
Note: General flame-retardant belts with covering layer thickness less than 2.0mm have no requirements for covering layer physical properties
Interlayer adhesion strength:
| Indicator Item | Interlayer Between Fabric | Cover Layer and Interlayer | |
|
Cover Layer Thickness ≤ 1.5 mm |
Cover Layer >1.5 mm |
||
| Average Value of Longitudinal Samples Not Less Than | 5 | 3.5N/mm | 3.9 N/mm |
| Minimum Peak Value of Longitudinal Samples Not Less Than | 3.9 | 2.4 N/mm | 2.9 N/mm |