| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat-sealing apparatus for a packaging bag capable of surely opening an opening part of the laminated packaging bag with a simple structure and with a relatively small suction force. <P>SOLUTION: The heat-sealing apparatus is equipped with an opening part opening mechanism 6 for opening the opening part 3a of the packaging bag 3 storing a lens 2 and a heat-sealer 7 for heat-sealing the opening part 3a of the bag 3. The mouth 3a is opened by the mechanism 6 to store the lens 2 in the bag 3. The opening part opening mechanism 6 includes a pair of suction means 32A and 33A respectively sucking and holding open ends of a front film and a rear film of the packaging bag 3, and an air cylinder 34 for bringing the means 32A and 33A closer to/farther away from each other. The pair of suction means 32A and 33A are provided to be shifted by a distance d in the vertical direction, while the means 33A is inclined by an angle α in the perpendicular direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
