... , foil. BTM- 1300 PLC controlled High-speed Automatic Slitting Machine Uses: The machine applies to cellophane, PET, OPP, CPP, PE ... that ‘s pressure in center by pneumatic ; With automatic tension compensation system, so that rewinding tension is steady ... pressure unit : The machine is equipped with two sets of pneumatic pressure automatic lifting sticks, tension automatic control by computer. 5, ...