Abstract: A thermoplastic tape is wrapped around a package and is tightened by the disclosed strapping or banding apparatus. The ends of the plastic tape can be welded together by a combined strapping and sealing apparatus or even with a separate sealing apparatus. The strapping apparatus includes a positioning system which ensures that a slotted wheel intended for tightening the plastic tape, once the operating cycle is complete, always assumes an optimum position for the re-insertion of the plastic tape. The use of the strapping apparatus is thereby substantially facilitated, since the operator normally does not have any hands free to adjust the slotted wheel that would otherwise be necessary for tape insertion.

Abstract: A tensioning and sealing apparatus, for tensioning and sealing a strap made of a plastic passed around a packaged item, is disclosed. The apparatus includes a clamping device for securing a lower starting section of a plastic strap. The apparatus of the invention further includes a tensioning device for both tensioning the strap and for acting upon an upper section thereof. Upstream from the tensioning device, a friction welding device is provided which preferably includes two welding dies, which are movable relative to one another, for joining mutually overlapping regions of the strap. A cutting member is further provided, preferably arranged between the friction welding device and the tensioning device, for cutting through the upper section of the strap after the strap has been welded.

Abstract: A thermoplastic tape is wrapped around a package and is tightened by the disclosed strapping or banding apparatus. The ends of the plastic tape can be welded together by a combined strapping and sealing apparatus or even with a separate sealing apparatus. The strapping apparatus includes a positioning system which ensures that a slotted wheel intended for tightening the plastic tape, once the operating cycle is complete, always assumes an optimum position for the re-insertion of the plastic tape. The use of the strapping apparatus is thereby substantially facilitated, since the operator normally does not have any hands free to adjust the slotted wheel that would otherwise be necessary for tape insertion.

Abstract: A band or strap of thermoplastic material which has been placed around a package or article being wrapped is put under tension by means of a tensioning device. The connection apparatus for connecting overlapping ends of the thermoplastic band material is placed within the area of the band or strap under tension and is used to connect these overlapping ends together. The connection apparatus welds the overlapping ends of the strap together using friction by rubbing the lowermost end in a transverse direction with repsect to the longitudinal axis of the band or strap against the uppermost strap end by means of a vibrating or oscillating welding jaw. The welding jaw is driven by an internal battery-powered DC-motor. The connection apparatus is especially well suited for use with a separate tensioning device and can be used in lieu of previously used seal clamps or pliers, independent from a connection with an electric power network or a source of compressed air.

Abstract: A band or strap of synthetic material, for instance thermoplastic material, placed as a ligature around a package or article to be wrapped is tensioned and its ends connected together, for instance by friction welding, by means of a tensioning and connecting apparatus for connecting overlapping strap ends of synthetic or thermoplastic material. The tensioning and connecting apparatus comprises a clamping member or shoe for restraining or holding the innermost end of the band or strap, a connecting or friction welding device and a tensioning device in the form of a slotted wheel located subsequent to the connecting or friction welding device as viewed in the direction from which tension is applied. The connecting or welding procedure involves a transverse motion such as vibration or oscillation of the innermost, free end of the strap or band relative to the longitudinal axis of the strap.

Abstract: A tape guidance duct (16) disposed in the manner of an arch bridging the object (20) to be strapped is provided to guide strapping tape (13) when it is being advanced and which releases the tape when it is tensioned around the object (20). The tape guidance duct (16) is assembled in modular manner from a plurality of monolithically formed, sequentially arranged, detachably linked segments (22, 23) which connect with each other by arms extended to fit into corresponding recesses so that, upon such forced engagement, neighboring segments butt together securely at planar end faces and have no lateral play. In this manner the shape and the path of the tape guidance duct (16) is adapted to particular circumstances e.g., different heights or widths of objects being strapped, in simple manner.

Abstract: A continuously driven endless belt trains about deflection rolls within a frame which surrounds a tunnel for the reception of the package which is to be strapped or tied with a ligature in the form of a plastic strap or band. Connectable with the revolting belt is a carriage which guides the plastic strap or band withdrawn from a supply roll along a prescribed path of travel about the tunnel. After each revolving motion of the plastic strapping band the carriage is again uncoupled from the endless belt at the region of a strap wrapping and connection unit, in order to transfer the starting portion of the strapping band which has been guided around the package to a strap or band closure device and, following the tensioning and cutting of such band, to engage a new starting band portion to accomplish the next strapping of the band about a new package.

Abstract: The wound body or package comprises a band or tape or the like which is wound thereon in the form of parallel windings or layers. At the central region of the wound package there is arranged a continuous or through-passing axial opening which is bounded by an inner winding layer of the wound band or tape. This inner winding layer together with the neighboring winding layers form a support body for the wound package. In this way there can be precluded the need to use any extraneous support body formed of a separate material.

Abstract: A method of, and apparatus for, interconnecting the overlapping band sections of a packaging or strapping band wrapped around an article, by means of a closure seal having closure flaps extending in the lengthwise direction of the seal and located at oppositely situated sides of a floor or base portion of the seal. The closure flaps protrude from the seal. These closure flaps of the closure seal which bears at its base portion upon a counter holder, are placed over one another and pressed against the base portion by means of a rolling or roller element which is moved in the lengthwise direction of the closure seal from one end thereof and over such closure seal. The band sections bearing upon the base portion are fixedly clamped between the closed closure flaps and the base portion. The rolling or roller element is seated upon a rotatable shaft moved translatory in lengthwise direction of the closure seal by means of a rack-and-pinion drive.

Abstract: An apparatus for use with a strapping machine for displacing and tensioning a strapping band about an article or the like, wherein band rolls, about which there is wrapped the strapping band, are operatively coupled with a reversible drive motor, and between the drive motor and at least one of the band rolls there is provided a speed reduction stage which is switched-on, due to the response of an overload coupling, during the rotational sense corresponding to tensioning of the strapping band. According to the invention, three successive band rolls are provided which are coupled with one another for carrying out the same peripheral rotation by means of a form-locking transmission or drive.

Abstract: A tensioning- and friction welding apparatus for strapping a band formed of thermoplastic material about an article or object, comprising a welding-clamping jaw driven for to-and-fro movement relative to a counter-clamping jaw by means of an inclined drive lever or the like. The jaws engage with the ends of the bands clamped therebetween and which are also engaged by a reverse movement-blocking device, tension such band ends and after reaching a predestined band tension weld the band ends to one another. The counter-clamping jaw is locked in a work position and can be released therefrom and displaced in the tensioning direction.

Abstract: A band clamping device for a machine wrapping or strapping a band, strip or the like about piece goods, such as boxes, containers, packages, crates and so forth, especially a plastic band or strip, comprising a stationary clamping jaw and a movable clamping jaw guided for movement towards and away from the stationary clamping jaw. The movable clamping jaw is articulated at an end hinge of a first element of a toggle lever, a second element of which can be pivoted by means of a drive about a further end hinge. Both clamping jaws possess essentially flat clamping surfaces intended to engage at the band and to hold such against the action of a tension or traction force. The connection line between the hinge points of the toggle lever together with the clamping surface of the clamping jaws enclose an acute angle open in the direction of the tension or traction force and the guide of the movable clamping jaw is elastically resilient in such direction.

Abstract: The invention relates to an improved apparatus for tensioning and fusing together strips of plastics material, having a pair of clamping members mounted on a support base and between which members overlapping strip portions are inserted tensioned, and fused together by frictional heat generated upon movement of one clamping member relataive to the other; the improvement resides in that the clamping members comprise clamping jaws of which at least one is adaptd to be reciprocable at a frequency corresponding to the speed of a drive shaft and that the drive is effected via a gearing which presses said driven reciprocable clamping jaw against the strip abutting it during its movement in the tensioning direction.