| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging method using a bag capable of sealing an opening mouth end portion of a thin plastic-made bag filled with articles without creases. SOLUTION: A bag 4 filled with sliced bread 1 is conveyed in a horizontal condition that the bag 4 is laid down on a blade conveyor 6. A mouth portion of the bag 4 is led between upper and lower two conveyor belts 20 and 21 which are vertically arranged so as to travel in the conveying direction of the bag. While a suction force acting on upper and lower sides of the mouth portion is applied from vacuum chambers 23 and 24 through the conveyor belts 20 and 21, air is blown from a sirocco fan 13 toward a mouth of the bag 4 so that the mouth portion of the bag 4 is opened. Two mouth spreader bars 30 having an interval between their distal ends narrowed are inserted into the bag 4 so opened. Then, the two mouth spreader bars 30 have the interval widened to thereby spread the mouth portion flat. The mouth portion of the bag 4 spread flat is pinched and sealed by a sealer 50 without generation of creases. COPYRIGHT: (C)2007,JPO&INPIT
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