PROBLEM TO BE SOLVED: To provide an electron beam sterilization method which can radiate electron beam on a whole external surface of an irradiated article uniformly by using a small low-energy electronic accelerator with a narrow window of source container, can keep reliability and safety of sterilization effect high by equalizing sterilization levels of each site, and can reduce cost of the electronic accelerator and reduce front-end cost and maintenance cost of the device by lengthening application limits (life).SOLUTION: An electron beam irradiation domain consisting of three electronic accelerators is used. An entire surface of an irradiated article can pass the electron beam irradiation domain uniformly by combining holding change of a holding part, move to one direction and an opposite direction, and 90° horizontal turn of the irradiated article.SELECTED DRAWING: Figure 10COPYRIGHT: (C)2016,JPO&INPIT【課題】照射窓の狭い小型低エネルギー電子加速器を利用して被照射物の外表面全体に均一に電子線を照射することが可能で、各部位の滅菌レベルを同程度にして滅菌効果の信頼性と安全性を高く維持できると共に、電子加速器のコストと使用限界(寿命)を長くして装置の初期費用とメンテナンス費用を低く抑えることができる電子線滅菌方法を提供する。【解決手段】3台の電子加速器からなる電子線照射領域を利用する。被照射物の挟持部の持ち替えと、一方向及び逆方向への移動と、水平方向への90°回転とを組み合わせることにより、被照射物の全表面が電子線照射領域を均一に通過することができる。【選択図】図10
