A method and device for producing a liquid food packed in a container are provided in which gas replacement for filling the head space of the container with an inert gas is efficient and the gas replacement is excellent with respect to profitability, safety, and simplicity. A liquid food packed in a container is produced through a step in which immediately before the opening (16a) of a container bottle filled with a liquid food is capped with a capping machine (14), nitrogen gas is blown by means of a nitrogen gas replacement device (100) toward the opening (16a) from two or three directions making an angle of -5 to 90º with the horizontal plane including the opening (16a) and the gas present in the head space of the container is thereby replaced with the nitrogen gas.本發明提供一種容器充填液狀食品的製造方法及其製造裝置,其將容器的頭部空間以非活性氣體置換時之氣體置換效率佳,並且氣體置換之經濟性、安全性和簡便性優異。一種容器充填液狀食品的製造方法,其係經由以下步驟來製造容器充填液狀食品:在藉由閉栓機14來將充填有液狀食品之寶特瓶容器的開口16a閉栓之前,朝向該開口16a,相對於該開口16a的水平面,以-5°~90°的角度,藉由氮氣置換裝置100,從二方向或三方向噴吹氮氣,將存在於該容器的頭部空間內之氣體置換為氮氣。13...第2搬送機14...閉栓機15...第3搬送機16a...開口100...氮氣置換裝置
