| 摘要 |
PROBLEM TO BE SOLVED: To obtain a sealing that is stable in strength by a method wherein degasification is made for the inside of a packaging bag, the distance between sealing irons is made optimum, corresponding to the thickness of the packaging bag, the fluctuation of pressing force on sealing is absorbed for making the sealing best and the sealed part is cooled quickly. SOLUTION: In this packaging bag sealing apparatus, an eccentric cam 26 is arranged at the rear side of sealing irons 20 so that the sealing irons 20 are pressed against both sides of a packaging bag by turning of the eccentric cam 26, a pressing fluctuation absorbing device 27 is interposed between the eccentric cam 26 and a support plate 19 supporting the sealing irons 20 for absorbing the fluctuation of pressing force arising from the variation of the thickness of the packaging bag, and a degassing shoe 14 for discharging residual gas in the packaging bag before the start of the sealing for the packaging bag is provided while a cooling shoe equipped with a pressing fluctuation absorbing device is arranged at the rear stage of a sealing device 10. |
