It features that as for the expansion Characteristic nonwoven fabrics which relate to this invention, being the expansion Characteristic nonwoven fabrics which contain the fiber which at least consists of two olefin polymers, the aforementioned olefin polymer, is conspecific, is the olefin polymer where flow being induced crystallization induction period differs mutually at the same time in identical temperature and identical shearing strain speed. The compound nonwoven fabrics which relate to this invention have featured that the formation which consists of these kind of expansion Characteristic nonwoven fabrics is contained 1 formation at least.本発明に係る伸長性不織布は、少なくとも2つのオレフィン系ポリマーからなる繊維を含有する伸長性不織布であって、前記オレフィン系ポリマーが、同種であり、かつ同一温度および同一せん断歪み速度において流動誘起結晶化誘導期が互いに異なるオレフィン系ポリマーであることを特徴としている。本発明に係る複合不織布は、このような伸長性不織布からなる層を少なくとも1層含有することを特徴としている。
