Combined folding machine ZYH660A can be operated 4 times parallel fold and 3 times vertical fold. The 4 times parallel folding mode includes the concertina fold and the letter fold. Perforating, creasing and slitting can be handled during folding process as required. The electric system are applied PLC and convertor speed governor. It has detection functions of double paper and jam.Main technical parameter: Max. Sheet size: 660x1040mm Min. Sheet size: 150x200mm Sheet weight range: 40-180g/m2 Max. Folding knife speed: 150stroke/min Max. Folding roller speed: 150m/min Power: 4.79kW Machine weight: 1850kgs Overall dimensions: 3800x1500x1630mm