MUNSCH is the inventor of the hand-held plastic welding extruder When our company founder Erich Munsch invented the first hand-held welding extruder for plastics in 1972 and brought it out on the market a year later, no one knew if his innovative device would be a success. But soon, it was clear the new tool was getting a great reception and sales figures went up. We now sell our extrusion welders, hot-wedge welders and accessories successfully all around the world.