| 摘要 |
PROBLEM TO BE SOLVED: To uniformly sterilize a bottle cap by few electron beam radiation units by stabilizing an attitude of a falling bottle cap.SOLUTION: When bottle caps C are sterilized by sequentially falling the bottle caps along a vertical sterilization passage 15e in such an attitude that a cap axis passing through a center of an opening surface Ci becomes generally horizontal, and applying electron beams thereto: in the sterilization passage 15e, a closed surface Co of a bottle cap C is sucked via a suction port 25 along a vertical direction by sucking an atmosphere gas and electron beams are applied to an opening surface Ci of the bottle cap C; and, in the sterilization passage, the opening surface of the bottle cap is sucked via a suction port along a vertical direction by sucking the atmospheric gas and electron beams are applied the closed surface of the bottle cap. |
