Wholesale Men's recycled spandex boxer pants in china tell you that Spandex Elasticity Test: (1) Wholesale Men's recycled spandex boxer pants in china tell you that take four spandex samples, remove the surface layer, then take three paragraphs of 10cm in length, and use the color pen marks the distance.

(2) Wholesale Men's recycled spandex boxer pants in china tell you that join the head and tail of the sample, put it on a single yarn strength machine for testing, and stretch it at a speed of 50cm/min. (3) First stretch the sample by 100%, 150%, 200%, 250%, and 300% three times, and then calculate the tensile stress (cn) and elastic recovery rate for the fourth time. Elastic recovery %=(10cm-test length)/10 X 100%.
Wholesale Men's recycled spandex boxer pants in china tell you that the boiling water shrinkage of spandex (%)=(10cm-test length)/10×100%, the conclusion: the boiling water shrinkage exceeds 10-15%, indicating that the spandex has poor stability.
Wholesale Men's recycled spandex boxer pants in china tell you that different products have different elastic requirements for spandex, some products require low elongation, high elongation or high elongation, low elongation or low elongation, low elongation or high elongation for spandex Long and high elasticity, so different types of fabrics should choose different suitable spandex. The standard rate is compared with other brands at 300% to ensure that the quality of spandex used by enterprises is consistent.

Through the above introduction and analysis of Wholesale Men's recycled spandex boxer pants in china introduces Spandex of Elasticity Test, hope it helps you.