| 摘要 |
A vertical-type filling and packaging machine for filling and packaging a filling material in a tubular film of resin has a pair of squeezing rollers (7) rotatably disposed one on each side of the tubular film (20) filled with a filling material. The squeezing rollers (7) press against the tubular film to clamp and feed the tubular film downwardly and create an unfilled region in the tubular film. A heat sealing mechanism (10) which is disposed downwardly of the squeezing rollers for heat-sealing and severing the unfilled region has a heater bar (11) for heat-sealing the unfilled region and a cooling bar (12) for cooling the portion which has been heat-sealed by the heater bar. The heater bar and the cooling bar are successively pressable against a portion of the unfilled region while the tubular film is being held at rest. A cutting device, which may be an independent cutting blade (13) or a triangular protrusion on the heater bar, severs the heat-sealed portion, thereby producing a sacked product. A plurality of film support members (18) are disposed downwardly of the heat-sealing mechanism for gripping and holding a lower end of the unfilled region from the time the unfilled region is heat-sealed until the unfilled region is severed by the heat sealing mechanism. <IMAGE> |
