An object of the present invention inserted the accommodation of the internal without fabric is displaced in the opening , and easily performs the extraction of the accommodation of the external , sterilization of the receiving object is to provide a possible sterilization bags . A together with the housing thereof inside the sterile bag 1 is housed , housed product is a sterile bag 1 that sterilization is performed in a state of housing , the first film part 2 substantially rectangular , first and the first one side of the direction along the first side of the film portion 2 of the first film part 2 overlaps the second film portion 3 , first on the other side of the first direction of the first film a non-woven fabric 4 which overlaps with one of the film unit 2, a first film portion 2 and the second opening 7 is opened in part of the side edges of the film unit 3 , and provided on the opposite side edge of the opening 7 and are to be provided with a gore portion 5A with a line on the inside , a second side edge of the film portion 3 and the side edges of the nonwoven fabric 4 and is detachably sealed wing portion , a second gusset section 5A length along the direction is different from the length along a second direction substantially perpendicular to the first direction of the blade part . [ Selection Figure Figure 3【課題】開口部において生地がずれることなく内部への収容物の挿入、及び外部への収容物の取り出しを簡単に行うとともに、収容物の滅菌が可能な滅菌袋を提供する。【解決手段】滅菌袋1内部に収容物が収納されるとともに、収容物を収納した状態で滅菌処理が行われる滅菌袋1であって、略長方形状の第1のフィルム部2と、第1のフィルム部2の第1の辺に沿った第1の方向の一方側で第1のフィルム部2と重なる第2のフィルム部3と、第1のフィルムの第1の方向の他方側で第1のフィルム部2と重なる不織布4と、第1のフィルム部2及び第2のフィルム部3の側縁の一部で開放される開口部7と、開口部7の反対側の側縁に設けられて内側に折れ線を有するマチ部5Aと、第2のフィルム部3の側縁部と不織布4の側縁部とが剥離可能にシールされた羽根部と、を備え、マチ部5Aの第2の方向に沿った長さは、羽根部の第1の方向と略直交する第2の方向に沿った長さと異なっている。【選択図】図3
