Extruders ES 2,2 / ES 4 Extruders are delivered in two designs to satisfy a wide range of customers' needs. The bigger model ES-4 is designed for welding of foils under difficult conditions and intensive use. It is equipped with a powerful motor unit which ensures a long life time. The smaller model ES-2,2 is fitted with a powerful pre-heating unit and is designed especially for welding of plastic plates in places with difficult access.