Different testing methods for the tear strength of non-woven fabrics

There are several different testing methods for the tear strength of non-woven fabrics. Before manufacture non-woven face masks, manufacturers have to test the non-woven fabrics.

1. Trapezoid method Trapezoid method tear strength refers to that the specimens in the two holders are trapezoidal. Because the width of the specimens are torn successively under the condition of increasing external load, the pointer of the powerful machine points to a larger Value. Constant velocity traction (CRT) powerful testing machine for powerful machine. Cut 10 pieces of test samples in vertical and horizontal directions. And cut a 10mm long cut in the middle of the short side of the trapezoid. The test results are expressed as the arithmetic average of 10 test readings in the vertical and horizontal directions.

2. Falling weight method The falling weight method tear strength refers to the force required to tear the sample by the falling weight method. This method is suitable for testing products under 120g/m2. This method is to clamp the sample between the moving pin and the fixed pincers of the falling hammer tearing strength tester. If the moving pincers fall quickly, the sample between the two pincers is torn. The larger value is the tearing strength. The sampling volume is 10 pieces in both vertical and horizontal directions, and the results are expressed as the arithmetic average of 10 test readings in both vertical and horizontal directions. High-strength

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