PROBLEM TO BE SOLVED: To provide a cushioning packing material for a medical formulation container and a sterility processing method of the medical formulation container, excellent in humidity heat durability, have preferable air permeability and an impact adsorption property, and can perform steam sterilization processing while packing the medical formulation container.SOLUTION: A fiber structure body which has air permeability equal to or more than 1 cm3/cm2 sec, and has a shape dimension change ratio of the packing material equal to or less than 10% when performing humidity heating processing at 121°C, at humidity of 100%RH and for 20 minutes, is used for acquiring the cushioning packing material for a medical formulation container.COPYRIGHT: (C)2016,JPO&INPIT【課題】湿熱耐久性に優れ、かつ良好な通気性、衝撃吸収性を有し、医薬品製剤用容器を梱包したまま、蒸気滅菌処理を施すことができる、医薬品製剤用容器の緩衝梱包材および医薬品製剤用容器の滅菌処理方法を提供する。【解決手段】通気度1cm3/cm2・sec以上であり、かつ、温度121℃、湿度100%RH、20分間の湿熱処理を施した際に、梱包材の形体寸法変化率が10%以下である繊維構造体を用いて医薬品製剤用容器の緩衝梱包材を得る。【選択図】図1
