PROBLEM TO BE SOLVED: To provide a gather member that is easily attached and detached, has a good feeling of fitting for a long time and is hard to slip down, and can provide absorbent articles, medical articles, etc.SOLUTION: A gather member contains elastic fibers. The elastic fibers contained in the gather member satisfy the following (a)-(d): (a) the stress (cN/dT) in the 300% extension of the third time of repetition in the 300% extension recovery repeating test is 0.050 or more and 0.150 or less (b) the 200% stress retention (%) of the third time of the repetition in the 300% extension recovery repeating test is 65 or more and 95 or less (c) the residual strain (%) after the third time of the repetition in the 300% extension recovery repeating test is 42 or less and (d) the stress relaxation time (second) is 70 or more and 95 or less.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】着脱しやすく、長時間フィット感が良好でずれ落ち難い、吸収性物品、医療用品等を提供することができる、ギャザー部材を提供する。【解決手段】弾性繊維を含むギャザー部材であって、ギャザー部材に含まれる前記弾性繊維が以下の(a)~(d):(a)300%伸張回復繰り返し試験における繰り返し3回目の300%伸長時の応力(cN/dT)が0.050以上0.150以下であり、(b)300%伸張回復繰り返し試験における繰り返し3回目の200%応力保持率(%)が65以上95以下であり、(c)300%伸張回復繰り返し試験における繰り返し3回目後の残留歪み(%)が42以下であり、(d)応力緩和時間(秒)が70以上95以下であることを満たす、ギャザー部材。【選択図】図1
