Patent ID: 7700504

Claim:
An elastic nonwoven fabric consisting of one layer wherein a long elastomeric fiber and a long nonelastomeric fiber are uniformly mixed together by spinning with a spunbonding method, wherein the elastic nonwoven fabric has not been stretched after being manufactured, a ratio of said long elastomeric fiber and said long nonelastomeric fiber ranges from 50/50 to 95/5 on a weight basis, said long elastomeric fiber has an average diameter (Bd) of 5 to 40 μm, said long nonelastomeric fiber has an average diameter (Ad) of 1 to 20 μm, an elongation recovery rate of the elastic nonwoven fabric after 50% elongation is 70% or higher, a separation resistance of two sheets of the same is equal or less than the strength at 50% elongation, and a ratio of Bd to Ad is no less than one (Bd/Ad≧1).