Patent ID: 8776484
Filing Date: 2014-07-15
Classification: B65B

Abstract:
1. A form-fill-seal machine adapted to manufacture a bag having a gusset section, the form-fill-seal machine comprising: a conveying part configured and arranged to convey a tubular packaging material; a plurality of splitters extending along a conveyance direction of the tubular packaging material to contact with the tubular packaging material from an interior side, the splitters being non-movably fixed in position relative to the conveying part; a lateral seal mechanism having a pair of seal jaws that rotate following an annular trajectory, the pair of seal jaws of the lateral seal mechanism being configured to seal the tubular packaging material in a lateral direction; an inward-folding member having a pressing part including a plurality of contacting portions that are three-dimensionally arranged to generally correspond to a shape of the gusset section, the inward-folding member being configured and arranged to move for each bag produced from a first position spaced apart from an external side of the tubular packaging material to a second position in which the inward-folding member presses the contacting portions of the pressing part against the external side of the tubular packaging material against an outer surface of a gusset formation area of the tubular packaging material located between the splitters to form the gusset section before the lateral seal mechanism seals the tubular packaging material in the lateral direction; a first actuator configured and arranged to move the inward-folding member in a first motion in which the pressing part presses against and separates from the gusset formation area of the tubular packaging material while the inward-folding member performs a rotating motion; and a second actuator configured and arranged to move the inward-folding member in a second motion, in which the pressing part presses against and separates from the gusset formation area diagonally downwards relative to a horizontal direction, independently of the first motion while the first actuator moves the inward-folding member in the first motion.