ELECTRON BEAM STERILIZATION METHOD AND ELECTRON BEAM STERILIZER

摘要

PROBLEM TO BE SOLVED: To provide an electron beam sterilization method and an electron beam sterilizer of low ozone generation levels. SOLUTION: This electron beam sterilization method and an electron beam sterilizer therefor have the following advantages: since an electron beam irradiation zone comes to a negative pressure condition by evacuating a gas therefrom by a relevant means 5, the oxygen concentration of the zone becomes lower, resulting in reduced ozone generation levels; both the inlet side 1a and the outlet side 1b of the zone are fed with a clean air or inert gas from a relevant feed means 6, resulting in positive pressure, therefore preventing bacteria from intrusion from the outside into a clean tunnel 1 or keeping the clean tunnel 1 from recontamination.