| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the hoisting of a bubbles of a filler liquid by hot air, and prevent the bubbles from adhering to a nozzle by making respective side walls where a plurality of jetting holes are dispersed in an area corresponding with the sealed part of respective side walls which continue in order with ridge lines, face diagonally upward. SOLUTION: When a container 11 is carried in and stopped at the place of a heater, a nozzle 51 for heating of container internal surfaces, is inserted in the container 11, and is made to confront with four top wall panels 22, 24, etc. By hot air being jetted from jetting holes 68 of the nozzle 51 for heating, the internal surfaces of sealed parts of the top wall panels 22, 24, etc., are heated. The hot air being jetted from the jetting holes 68 of the nozzle 51 is made to face diagonally upward because the side walls 62, 64, etc., of the nozzle 51 face diagonally upward. The hot air being jetted diagonally upward, advances straight, and collides with the internal surfaces of respective sealed parts from the diagonally lower side, and then, flows upward along the internal surfaces of the sealed parts, and is discharged from the container 11. Therefore, there is no fear that the hot air flows into the container 11, and bubbles on a liquid surface are not hoisted also. |
