| 摘要 |
To provide an ultrasonic sealing apparatus with an excellent sealability capable of supplying sufficient output energy delivered by an ultrasonic wave-generating device to a thermoplastic resin of a packing material, even pressing a tubular packing material on an appropriate timing at transverse sealing, so that softening/melting of the thermoplastic resin is sufficient enough for an excellent sealing. In an apparatus wherein a packing material consisting of a laminated body comprising a thermoplastic resin layer is made into a tubular form and the tubular packing material is transverse-ultrasonic sealed with a fluid, a stopper 20 regulating the distance between a horn 12 with an elongated and flat sealing face and an action face of an opposing jaw 18 having a pressing portion for pressing a packing material in co-operation with the sealing face of the said horn, for example, to be smaller than that of when pressing the packing material under the non-molten condition by 0.1-0.8mm and to be larger than that of when pressing under the molten condition, is disposed. <IMAGE> |
