Detection background
The non-restorable elongation rate of the blanket refers to the ratio of the difference between the length of the sample measured after being stretched and recovered three times and laid flat for 30 minutes and the original marked length of the sample to the original marked length of the sample. The smaller the non-recoverable elongation of the blanket, the better the recovery of the fabric.
Zhongke Testing Environmental Reliability Experiment Center has the ability to test the reliability performance of various textile raw materials and products, and provides professional non-repeatable elongation test services for blankets.
Detection Range
woven blankets, such as pure wool rubber-backed washed carpets, special-shaped imitation handmade electric needle blankets, wool carpets, tufted chemical fiber carpets, patchwork carpets, patchwork carpets, tapestries, elevator blankets, etc.
TEST PRINCIPLE
The sample is stretched to the specified load at a constant speed, and then returned to the starting point at the same speed. This is repeated three times. After the stretched sample is placed under no load conditions for a certain period of time, its length is measured and compared with the original length to obtain the degree of non-restorable elongation.
Testing standard
FZ/T 60008-2019 Non-recoverable elongation test method for blankets
FZ/T 60007-2019 (4.8) Blanket test method
GB/T 6529 Textiles Standard atmosphere for humidity conditioning and testing
GB/T 8170 Numerical rounding rules and representation and determination of extreme values
GB/T 16825.1 Inspection of static uniaxial testing machines Part 1: Inspection and calibration of force measuring systems of tensile and/or compression testing machines
