GB/T 3903.14-2021 specifies the test method for the needle tear strength of various shoe outside materials, applicable to the performance determination of natural or synthetic outsoles. The standard clarifies requirements for sample preparation, environmental conditioning, test operation, and result calculation. Its core involves using a tensile testing machine conforming to ISO 7500-1 Class B accuracy, equipped with instruments such as a standard steel needle with a diameter of 1 mm and a thickness gauge with an accuracy of 0.01 mm. After piercing the sample with the steel needle, it is stretched at a speed of 100 mm/min, and the maximum tearing force is recorded. The strength value is calculated based on the sample thickness to evaluate the outsole's resistance to tearing by sharp objects, thereby providing a basis for shoe quality control.
| Status | Active | ||
|---|---|---|---|
| CCS | Y78 | ICS | 61.060 |
| Release Date | 2021-10-11 00:00:00 | Implementation Date | 2022-05-01 00:00:00 |
