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Cut resistant tests are many and varied, and uniformity of test sample and cutting edge is critical in all tests. In-house cut-resistance comparisons have used a Sintech tensile testing machine modified as shown in Figure 23 to accept a fixture holding a knitted hose leg.
Tension is adjusted in hose leg samples to allow a specified deflection at a given load. Inspection of the round blade to assure a clean cutting edge is critical. Table 17 compares the cut resistance of various fibers.
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Table 17: Sintech Cut Resistance
| Material |
Denier |
Relative Load |
(KAI) |
| Vectran® HT |
1500 |
3.4 |
| Vectran® NT |
1500 |
2.2 |
| Aramid |
1500 |
1.1 |
| HMPE |
1500 |
1.0 |
Kuraray method tests, utilizing fixed blades, yield similar results with knitted spun yarn samples (Figure 24). Table 18 compares these results.
Table 18: Cut Resistance Of Spun Yarn
(Knit Samples From 20s/2s)
| Material |
Relative Load |
(KRC) |
| Vectran® HT |
100 |
| Standard Aramid |
73 |
| Polyester |
4 |