杜邦（Elaspan）氨纶是美国杜邦公司生产的一种人造弹性纤维,可广泛应用于包纱、袜类、纬编、经编、包芯纱等所有使用弹性纤维的领域.化学名称为链段聚氨荃甲酸酯.它是由柔性链段和刚性链段组成的嵌段分子链,正是这样的分子结构,赋予纤维伸长和回复的能力.Elaspan承受拉力时可延伸4-7倍,在拉力释放时,会完全回复成原来的长度,Elaspan优异的延伸性和回复性,让服装因此更合身、舒适、飘逸,增加织物的价值
Pls advise what's mean of Elaspan是什么意思
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