Abstract: In a device for the formation of the longitudinal seam of a tubular foil, a flexible foil is placed around a formatting tube by means of a formatting shoulder. The device has a transporting device for moving of the foil and the formed tubular foil. The invention provides two opposingly rotating sealing bands which are pressed against one another clamping the two longitudinal edges o the foil for welding of the longitudinal seam of the tubular foil. One of the sealing bands can be heated by means of a heating device. Both sealing bands can be heated and the device designed as a tubular bagging machine. The invention has the advantage that the deflection of the longitudinal seam from its true path is avoided.

Abstract: A cross-sealing device for a tubular-bag packaging machine operable with stripping rods moved along the plastic foil tube to be sealed, which stripping rods assure that the sealing surfaces are free of packaging material prior to the sealing task. A drive is provided for the stripping rods which is mechanically robust and makes it possible to adapt the stripping paths on the plastic foil tube to the special requirements. Belt drives are provided for this purpose which are driven independently of the cross-sealing jaws and are controlled by a position controller controlling the position of the stripping rods.

Abstract: A tubular-bag packaging machine having at least one pair of cross-sealing jaws (25) which are supported on a holding device (15) movable vertically back and forth by means of a connecting rod (14) as well as horizontally through a four-bar mechanism comprising a crank disk (9) coupled with the connecting rod (14), and comprising side-fold-forming means (23, 24) which are supported on a guide element (18) movable transversely with respect to the direction of movement of a foil tube (41).

Abstract: The invention relates to a stripper mechanism for a tubular bag packaging machine, in which a foil strip (1) is formed into a tube (3) by means of a longitudinal sealing jaw (2) and is formed into bags by means of cross-sealing jaws (4). A stripper mechanism (5) is arranged in the area of the cross-sealing jaws (4), which stripper mechanism (5) includes two stripper rods (6) supported on the end areas of support arms (7). In order to provide a drive for the stripper mechanism (5), which drive is independent of the drive of the cross-sealing jaws (4), the stripper rods (6) are connected to a common closing mechanism (8), and that furthermore the stripper rods are connected to a moving mechanism (9) for effecting a relative movement along the foil tube (3).

Abstract: An apparatus for the manufacture, filling and closing of bags made of a heat-sealable sheet. Known apparatus use cross-sealing stations in which, caused by the movement of the cross-welding jaws, on the one hand, an adjustment of the welding path is not possible and, on the other hand, the production speed cannot be increased. In order to avoid these disadvantages, the invention provides that the cross-welding jaw is supported on a support which is connected to two parallel guide-bar arrangements, which are pivotal about two parallel axles arranged perpendicularly with respect to the centerline of the tube to define a four-bar mechanism.

Abstract: A feed station having a plate-retaining device which consists of a stationary guide arranged in front of or preceding the bridging belt for folding or swinging the side edge flaps of the folded box during an abutting thereof to a position wherein the plane thereof is parallel with respect to the direction of transport or movement. An additional guide plate oriented in a processing position subsequent to the stationary guide is provided, which guide plate is moved to hold the side edge flap of the folded box, which side edge flap is a trailing flap, open until the respective rear or trailing guide plate for the goods is oriented in front of the corresponding side edge flap.

Abstract: The invention relates to a device for closing a package (1) provided with at least one flap (2), comprising a path of movement for the package (1) and comprising a rotatable closing element (3) arranged next to the path of movement. In order to prevent the package from being deformed during closing of the flap (2) and in order to be able to carry out the closing operation quickly and safely, it is provided that the closing element is designed in the form of a cylindrical pipe, at least at one area of its outer surface being cut at an angle in order to define a guide edge (4).

Abstract: In order to avoid in a tubular bagging machine the disadvantages resulting from the state of the art through a cam-plate control of cross-welding jaws, it is suggested according to the invention, that the control of the movement of the cross-welding jaws occurs in dependency on the contact pressure, the temperature and the needed sealing time, with the drive being able to occur mechanically by means of a toggle-lever drive mechanism.

Abstract: A device for the cross-welding and/or cross-cutting of sealable foil material having inserted therein at regular intervals a particularly bulky fill material. Swingably mounted sealing jaws are forcedly guided in closed cam guideways which are an inverted mirror image of one another and located on opposite sides of a plane of symmetry (E) such that they each clamp foil material therebetween at a location whereat no fill material is located and along the plane of symmetry. The sealing jaws then swing out and away from the foil material and travel to the next area which does not contain fill material. Forcedly guided compressing members are arranged to travel in front of the sealing jaws, which compressing members compress the foil material at least over the sealing area determined by the sealing-jaw width. The compressing members are cylindrical, for example in the form of circular rods, rollers, cage bars and the like, preferably spring loaded and are relatively movable with respect to the sealing jaws.

Abstract: A driving method and system for controlling the operating characteristics of a tubular-bag machine, in which a tubular bag is closed off at the bottom end so as to be fillable with packing material through a fill pipe. An intermittently moved thin foil tube is for this purpose guided vertically between transversely arranged, heated sealing jaws, the opening and closing of which being camcontrolled. The foil movement is adjusted to the opening and closing movement. The drive for effecting the foil movement and the drive for effecting the sealing, separating and welding device are driven by separate motors controlled independently from one another, and are adjusted to one another such that each angular-speed stage can be adjusted independently from the preceding or following stage to the demands of the work cycle at any time during the work cycle. The magnitude of the angular speed can be adjusted as well.

Abstract: A packaging machine for manufacturing filling and closing of bags. A foil tube (4) is pulled off continuously by means of unwinding belts (13) on a packaging machine contracted as a tubular bag-forming machine. Cross sealing seams are created by means of continuously moving cross sealing jaws. The cross sealing jaws are maintained in a horizontal position during their entire movement by being guided in guide grooves. The guide curves have straight curve pieces in the area of a sealing zone, which curve pieces extend parallel with respect to the unwinding direction of the foil tube (4). The packaging machine permits a high operating speed, since the cross sealing occurs simultaneously with the unwinding movement and the cross sealing jaws, are guided exactly in an optimum position with respect to the foil tube. (4). The machine can be operated such that the unwinding speed for the thin sheet material is only a little slower than the speed of the goods to be packaged at the end of the fill pipe.

Abstract: A tube sack has a fill chamber and a flag at one end thereof, the flag having a sealing seam at the outer end thereof and a labyrinth seam which is adjacent the fill chamber and which is arranged to provide small passages through which air can flow from the fill chamber to a ventilation chamber located between the sealing and labyrinth seams. A vent opening is provided in the form of a perforation through a wall of the flag or an interruption in the seal seam, and is sealed by a bridging seam which surrounds it or by a seal piece which is glued over it. In a method and apparatus for making the sack, a tube is formed and sealed at one end, is then filled, and the flag, sealing seam and labyrinth seam are then made in the other end along with, where appropriate, a perforation for the vent opening.

Abstract: A conveyor apparatus includes first and second elongate conveyor belts which are parallel and adjacent, which have support surfaces which are approximately flush, and which each have a plurality of compartment walls secured on and projecting outwardly from the support surface. Each compartment wall has a portion which extends laterally over the support surface of the other conveyor belt and each compartment wall is associated with a respective one of the compartment walls on the other conveyor belt. The conveyor belts are normally driven synchronously, but can be moved relative to each other in order to change the spacing between respective pairs of the compartment walls. Each conveyor belt preferably includes at least one elongate chain having a plurality of support elements supported thereon, each of the compartment walls being supported on a respective one of the support elements.

Abstract: A packaging machine includes a magazine which has a plurality of vertical compartments open at the top and bottom and which is supported for steplike movement between first and second positions in a direction forming an acute angle to a horizontal reference. A pair of adjacent box supports are located below and are parallel to the path of movement of the magazine, and are vertically movable between positions closely adjacent and spaced from the bottom of the magazine. A feed mechanism supplies individual packages to a fixed location above the path of movement of the magazine, the packages dropping into respective magazine compartments as the magazine moves. The feed mechanism can include a shaping mechanism at such fixed location to uniformly shape the individual packages. An inclined guideway supplies boxes to one of the box supports.

Abstract: A flexible tube bagging machine having a feed device for a foil, a shaping member over which the foil is drawn and formed into a tube and a foil transfer device arranged downstream of the shaping member. The shaping member has a sleeve portion and a collar for engaging the foil. The collar is secured to the sleeve portion and guides the foil inside of the sleeve portion. The collar has a collar neck portion and two collar chest portions connected to the collar neck portion and face outwardly from a front side of the machine. The collar chest portions converge in a conveying direction of the foil and effect a guiding of the lateral edges of the foil toward one another. The collar chest portions are of different length and the longer collar chest portion extends through a central plane extending through the longitudinal axis of the sleeve portion to a position adjacent an opposed edge of the cutout and being perpendicular to the front side of the machine.

Abstract: A method and apparatus for packing of bulk materials. The bulk material is measured in portions and dispensed into a fill pipe. Suction probes are provided for evacuating the entrapped gas from the bulk material while in the fill pipe. The fill pipe is then lowered against a stop to suddenly jar the fill pipe to effect a release of the gas-free bulk material into a tubelike container. Thereafter, the top of the tubelike container is sealed closed and lowered into a bag and delivered to a station whereat the bag is sewn closed.