WATER-INJECTING DEVICE

PURPOSE:To prevent color change from occurring to seal members of a bag by preventing waterdrops from dripping onto the seal members during and after injection of water. CONSTITUTION:A water-injecting nozzle 30 is moved downward into a bag during injection of water by operation of an ascending/descending mechanism 40, and water is supplied from a water tank 10 into the bag through the water-injecting nozzle 30. Filling substances are added into the bag and residual water in the water-injecting nozzle 30 is blown away by compressed air after finishing of the injection, and the water-injecting nozzle 30 is lifted up to a retreat position by the ascending/descending mechanism 40. As water is not sprayed over seal members provided in extension to a place near the upper opening of the bag during the injection, or waterdrops are not sprayed from the water-injecting nozzle 30 over the seal member provided in extension to the place near the upper opening of the bag after the injection, color change be prevented from occurring to the seal members. As a water-retaining part, warped approximately in U shape, is provided to the lower end of the water-injecting nozzle for retaining the residual water in the water-injecting nozzle, the residual water that is not blown away by compressed air after the injection can be prevented from dropping from the water-injecting nozzle.