GAS REPLACEMENT APPARATUS

A gas replacement apparatus capable of stably supplying replacement gas to a bag is provided. The apparatus includes a side holding unit holding a side of the bag; a mouth holding unit holding the mouth of the bag; a gas nozzle having an ejection port spraying replacement gas; and a sealing unit sealing the mouth. A side holding drive unit and a mouth holding drive unit move the side holding unitand the mouth holding unit from a first processing position to a second processing position while maintaining a state where the side holding unit holds the side portion and the mouth holding unit holds the mouth portion. A gas nozzle drive unit moves the gas nozzle from the first processing position to the second processing position while maintaining a state where the ejection port is arranged inside the bag. 本发明提供一种能够稳定地向袋内供给置换气体的气体置换装置。气体置换装置具有：侧部保持部，其保持袋的侧部；口保持部，其保持袋的口部；气体喷嘴，其具有喷出置换气体的喷出口；以及密封部，其密封口部。侧部保持驱动部和口保持驱动部一边维持侧部保持部保持着袋的侧部且口保持部保持着袋的口部的状态，一边使侧部保持部和口保持部从第1处理位置朝向第2处理位置移动。气体喷嘴驱动部一边维持将喷出口配置于袋的内侧的状态，一边使气体喷嘴从第1处理位