Multiflo instruments supplies plastic welding and fabrication machines based on vibration technology, manufactured by pas systems, usa. Vibration plastic welding is used to join large plastic parts through frictional heat and pressure generated in a linear or orbital motion [vibration]. The surface of one part is vibrated against the other, which is generally fixed in a stationary position. Vibration welding lends itself to large or irregularly shaped parts and difficult to weld resins that do not work well with other methods. Vibration plastic welding produces high pressure hermetic and very strong structural seals, and it is more forgiving [tolerance variations, wall thickness considerations] than most other methods. Automatic frequency control and weight compensation, weld by distance or time, multiple program memory storage and touch screen interface, automatic vibration amplitude control during welding, multistage weld sequencing, printer option for weld history are some of its features.