| 摘要 |
An apparatus for sealing the bottom of a bag includes a frame through which a bag to be folded is longitudinally advanced. The apparatus includes a pair of cooperating grippers carried by a reciprocably movable gripper carrier. The grippers are operated to opposite edges of the bag, and laterally tension the bag. The apparatus includes a vertically reciprocable fold plate which then is moved downwardly to engage and downwardly fold a leading end portion of the bag. Adhesive is applied thereto, and the bag advanced, by movement of the gripper carrier, for advancement of the folded bag to at least one pair of intermittently-driven nip rollers. The grippers are released, and the nip rollers thereafter operated to compress and complete sealing of the bag bottom.
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