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What Factors to Pay Attention to when Determining the Tearing Strength?

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What Factors to Pay Attention to when Determining the Tearing Strength?

  • Categories:Industry news
  • Author:
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  • Time of issue:2017-12-29

What Factors to Pay Attention to when Determining the Tearing Strength?

1.The sample should be cut according to the size in the following chart.

Project Trapezoid Method Single Tongue Method Hammer Drop Method
Sample Length(mm) ≥200 (approximately 150) ≥200 75 (approximately 63)
Sample Width(mm) 50(After repairing the edge yarn) 75 100
Cut Length(mm) 10 80 20
Tear Length(mm) 10 75 13
Holding Distance(mm) 100 75 <2
Stretching Rate(mm) 200 200(Hair Length 50) Hammer Drop

2. The test direction refers to the direction in which the yarn is torn, ie, the direction perpendicular to the incision, such as the warp yarns of the warp sample in the single tongue tear in the width direction, and the trapezoid method in the opposite direction.

3.The cut should be cut along the warp or weft direction, otherwise the tear may deviate from the cut during tearing.

4.When the specimen is clamped, the yarn at the incision can not be stressed.

5. Measurement observed in the observation of the tear of the specimen, such as the slit deviate from the incision extension line should be examined further. It should be removed and added to the results.

6.Drop the weight of the bezel in order to determine the pressure, full, not with the fan hem friction.

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