Strapex Ag

Franklin F Niedrig

Volker Kuhnert

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.

Strapping apparatus for a packaging strap

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.

Apparatus for connecting overlapping ends of thermoplastic band material

Friction welding tool for thermoplastic straps or similar article

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.

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Berikon, Switzerland

Franklin F Niedrig