Method and device for sterilizing packaging materials by using high voltage pulses

摘要

To provide a method for sterilizing a packaging material and a sterilizer used therefor, which do not cause unevenness in the sterilization effect, and uses high voltage pulses permitting to improve the sterilization effect. The purpose can be achieved by using such a discharge side electrode (5) as is provided with unevenness having continuous projections (5a) on the discharge side surface, in the method in which the sterilizer is provided with a power source (6) for generating high voltage, a discharge side electrode (5) to which the high voltage generated by the power source is applied, and a ground side electrode (2) arranged so as to be opposed to the discharge side of the discharge side electrode, and sterilizes a packaging material to be sterilized by placing it between both electrodes under normal temperature and normal pressure, and applying the high voltage pulses thereto in a gas atmosphere. <IMAGE>