Abstract: An apparatus for strapping an article by means of a flat tape includes least one tape guide frame having a flat tape guide passage, and a tape drive for feeding the tape into the tape guide passage, wherein arranged at the tape guide frame is an opening device which opens a narrow side of the tape guide passage, and a method of strapping an article with such an apparatus. The opening device may include at least one cover element which is movably secured to the tape guide frame and which is movable from a closed position in which it covers the narrow side of the tape guide passage into an open position in which it opens the narrow side of the tape guide passage. In that way a fresh tape loop can be introduced into the tape guide passage before the welding operation is concluded.

Abstract: An apparatus for strapping an article by means of a flat tape includes least one tape guide frame having a flat tape guide passage, and a tape drive for feeding the tape into the tape guide passage, wherein arranged at the tape guide frame is an opening device which opens a narrow side of the tape guide passage, and a method of strapping an article with such an apparatus. The opening device may include at least one cover element which is movably secured to the tape guide frame and which is movable from a closed position in which it covers the narrow side of the tape guide passage into an open position in which it opens the narrow side of the tape guide passage. In that way a fresh tape loop can be introduced into the tape guide passage before the welding operation is concluded.

Abstract: In an ultrasonic welding apparatus comprising an ultrasonic sonotrode and a backing plate, flat workpieces to be welded are pressed between the sonotrode and the backing plate. Projections are provided on a portion of the surface of the sonotrode and on a portion of the surface of the backing plate, each projection-bearing surface portion being adjoined by a smooth portion. The flat workpieces are for example ends of a strapping tape formed in a loop around a package in a strapping machine and the aim is to produce a weld of increased strength.

Abstract: In an ultrasonic welding apparatus comprising an ultrasonic sonotrode and a backing plate, flat workpieces to be welded are pressed between the sonotrode and the backing plate. Projections are provided on a portion of the surface of the sonotrode and on a portion of the surface of the backing plate, each projection-bearing surface portion being adjoined by a smooth portion. The flat workpieces are for example ends of a strapping tape formed in a loop around a package in a strapping machine and the aim is to produce a weld of increased strength.