... 20 multi-channel process,Photoelectric PLC automatic control system procedures completed.B1: Cylinder forming process flow chartMill ... Automatic paper web guide - Automatic paper unwind, - Auxiliary web draw system - ,Perforation - Cross stepgluing - ,Longitude seam gluing - Tube forming ... PE/PP film available35~50 million bags/yearServo system control or PLC control available, integrated with ...