Quality inspection experimental process
2025-09-09 09:58
Fabric Tensile Strength and Tear Strength Testing
- Tensile Strength: Cut longitudinal and transverse samples from the bag body fabric (length 200mm × width 50mm , clamping distance 100mm ), stretch at a speed of 500mm/min and record the load at break ( N ), calculate tensile strength ( MPa = Load / cross-sectional area);
Longitudinal (warp direction): aligned with the length direction of the bulk bag (main load-bearing direction, corresponding to the warp yarn direction of the woven fabric);
Transverse (weft direction): aligned with the width direction of the bulk bag (corresponding to the weft yarn direction of the woven fabric).
Sample size: length 200mm × width 50mm (effective clamping section 100mm , clamping area at each end 50mm )
Quantity: cut 5 parallel samples each for longitudinal and transverse directions
② Tear Strength:
Testing procedure:
Speed 500mm/min , after starting, the sample tears along the pre-cut notch, recording the force value during tearing ( F , unit N );
If the tear path deviates from the pre-cut notch (e.g., skewing to one side > 10mm ), the result is invalid and resampling is required.
By strictly controlling sample preparation, environmental conditions, and testing operations, the results can accurately reflect the true performance of the fabric, providing key data support for the overall quality of the bulk bag.
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